US20040157529A1 - Apparatus for maintaining constant force between a finishing tool and a workpiece - Google Patents
Apparatus for maintaining constant force between a finishing tool and a workpiece Download PDFInfo
- Publication number
- US20040157529A1 US20040157529A1 US10/360,683 US36068303A US2004157529A1 US 20040157529 A1 US20040157529 A1 US 20040157529A1 US 36068303 A US36068303 A US 36068303A US 2004157529 A1 US2004157529 A1 US 2004157529A1
- Authority
- US
- United States
- Prior art keywords
- finishing tool
- workpiece
- base
- constant force
- actuator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/16—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
- B24B9/16—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of diamonds; of jewels or the like; Diamond grinders' dops; Dop holders or tongs
Definitions
- the present invention pertains to the finishing of manufactured goods, and more particularly to an apparatus for maintaining a constant force between a finishing tool and a workpiece.
- finishing operation such as buffing, grinding or polishing.
- a finishing operation such as buffing, grinding or polishing.
- Prior devices for maintaining a constant force between a finishing tool and a workpiece have typically involved complex mechanical structures, often incorporating electronic controls and feedback. Aside from an increased likelihood of malfunctioning, the complexity of these prior devices generally results in an increased cost, often to the point that use of the devices is prohibitive for economic reasons.
- an automated finishing system might utilize a programmable computer-controlled robotic arm to engage a workpiece against a stationary finishing tool with a constant force.
- Such a configuration generally requires some type of force feedback to an appropriately programmed controller, as well as complicated programming code necessary to manipulate the robotic arm to engage the workpiece with a constant force.
- the time, effort, and equipment necessary to achieve the desired result of constant force finishing with this type of system is likely to increase the cost to an extent that use of such a device is prohibited in many applications.
- the present invention provides an apparatus for maintaining constant force engagement between a finishing tool and a workpiece.
- the apparatus facilitates efficient finishing of a workpiece by assuring that an adequate, but not excessive force is maintained against the workpiece by the finishing tool, regardless of variation of positioning of the workpiece relative to the tool, surface irregularities of the workpiece, or wear of the finishing tool.
- the apparatus includes a motor supported on a rotatable base and coupled to a tool holder for supporting a finishing tool at a point offset from the rotational axis of the base.
- the rotatable base is coupled to an actuator configured to rotate the base and thereby cause the finishing tool to engage a workpiece.
- the actuator can be controlled to maintain a constant and known force between the finishing tool and the workpiece.
- the actuator is a pneumatic or hydraulic cylinder that is coupled to the base by a cable.
- the cylinder is coupled to a source of pressurized air or fluid that may be controlled to cause a piston of the cylinder to apply a constant and known force to the cable, whereby the finishing tool is caused to engage the workpiece with a constant force.
- the actuator is coupled to the rotatable base by a gear train.
- the gear train comprises a rack and pinion, and the actuator is a pneumatic or hydraulic cylinder coupled to the rack.
- the pinion is coupled to the rotatable base whereby movement of the cylinder piston causes the base to rotate such that the finishing tool engages the workpiece with a constant force.
- the gear train comprises a bull and pinion.
- the actuator comprises a rotary pneumatic or hydraulic device and is coupled to the pinion gear.
- the bull gear is coupled to the rotatable base, whereby actuation of the rotary device causes the base to rotate such that the finishing tool engages the workpiece with a constant force.
- the actuator comprises a weight coupled to the rotatable base by a cable routed over a pulley.
- the weight may be selected to cause the base to rotate and engage the finishing tool against the workpiece with a constant force proportional to the weight.
- FIG. 1 is a perspective view of an exemplary apparatus for maintaining constant force engagement between a finishing tool and a workpiece according to the present invention
- FIG. 2 is a perspective view of another exemplary embodiment of an apparatus according to present invention.
- FIGS. 3 A- 3 B are perspective views of additional exemplary embodiments of an apparatus according to present invention.
- FIG. 4 is a perspective view of yet another exemplary embodiment of an apparatus according to the present invention.
- the apparatus 10 a for maintaining a constant force engagement between a finishing tool and a workpiece.
- the apparatus 10 a includes a motor 12 supported on a rotatable base 14 .
- base 14 comprises a support surface 16 mounted upon a vertical column 18 that is rotatably coupled to a footplate 20 , whereby support surface 16 may be rotated about an axis 17 extending axially along vertical column 18 .
- the apparatus further includes a finishing tool 22 , such as a buffing, grinding, or polishing wheel, operatively coupled to the motor 12 by a tool holder 24 , such as a collet or chuck.
- actuator 26 a rotates the base 14 to bring the finishing tool 22 into contact with a workpiece 28 to thereby perform finishing operations on the workpiece 28 .
- finishing tool 22 has been depicted in the exemplary embodiments herein as a disk or wheel coupled for rotational movement to motor 12 by tool holder 24 , it will be understood by those of ordinary skill in the art that finishing tool 22 , tool holder 24 , and motor 12 may have various other configurations for finishing a workpiece, as known in the art.
- the finishing tool may comprise a belt coupled to the motor for vibratory, orbital, or oscillatory motion.
- finishing tool 22 may alternatively be configured for rotation about an axis parallel to axis 17 , or even oblique to axis 17 , provided finishing tool 22 is offset from axis 17 .
- Actuator 26 a comprises a pneumatic cylinder 33 having a piston 34 coupled to base 14 by a cable 36 , whereby movement of the piston 34 causes support plate 16 to rotate relative to footplate 20 .
- the pneumatic cylinder 33 is coupled to a source of pressurized air (not shown) by hoses 40 , 42 .
- a pressure regulator 38 is provided intermediate the cylinder 33 and the source of pressurized air and has a control knob 44 to permit adjustment of the tension applied to cable 36 by piston 34 , whereby finishing tool 22 may be caused to contact workpiece 28 with a known force.
- the tension applied through the cable 36 by pneumatic cylinder 33 is maintained substantially constant such that the force between the finishing tool 22 and the workpiece 28 remains constant regardless of variation in positioning of the workpiece by robot arm 30 , wear of the finishing tool 28 , or variation in the surface of the workpiece 28 .
- FIGS. 2 - 4 illustrate other embodiments of the present invention utilizing various mechanisms for actuating rotatable base 14 to move finishing tool 22 into contact with workpiece 28 , in a manner similar to that described above for FIG. 1.
- the motor 12 , support surface 16 , finishing tool 22 , and tool holder 24 are the same as described above for FIG. 1 and these components shown in phantom for illustrative purposes.
- actuator 26 a again comprises a pneumatic cylinder 33 , however piston 34 is coupled to rotatable base 14 by a rack and pinion gear train.
- rack 50 is coupled to the piston 34 and engages pinion gear 52 coupled to base 14 , whereby linear movement of piston 34 under control of pressure regulator 38 causes support surface 16 to rotate. Rotation of support surface 16 in turn moves finishing tool 22 into contact with a workpiece 28 .
- pressure regulator 38 may be adjusted by manipulation of knob 44 to control the movement of piston 34 such that finishing tool 22 is maintained in engagement against workpiece 28 with a known and constant force, as described above.
- actuator 26 b comprises a weight 54 and a pulley 56 coupled to rotatable base 14 by cable 36 .
- Weight 54 maintains constant tension in cable 36 to cause base 14 to rotate, thereby bringing finishing tool 22 into contact with workpiece 28 in a manner similar to that described above for FIG. 1. It will be recognized that weight 54 can be varied to apply any desired force to cable 36 such that a known and constant force can be maintained between finishing tool 22 and workpiece 28 .
- FIG. 3B illustrates another exemplary apparatus 10 d of the present invention, similar to that shown in FIG. 3A, but wherein actuator 26 c comprises a constant force spring that is coupled to rotatable base 14 by cable 36 . Accordingly, the constant force spring may be selected to provide a desired tension in cable 36 such that finishing tool 22 is maintained in constant force contact with workpiece 28 .
- actuator 26 d comprises a rotary pneumatic device 60 coupled to rotatable base 14 by a bull and pinion gear train.
- rotary pneumatic device 60 is connected to a source of pressurized air (not shown) by hoses 62 , 64 coupled through a pressure regulator 66 with control knob 67 .
- a pinion gear 68 fixed to the output shaft of the rotary pneumatic device 60 engages a bull gear 70 coupled to rotatable base 14 such that rotation of pinion gear 68 by the rotary pneumatic device 60 , actuated by the pressurized air, causes rotatable base 14 to move finishing tool 22 into contact with workpiece 28 .
- pressure regulator 66 may be adjusted such that rotary pneumatic device 60 applies a known torque to rotatable base 14 through pinion gear 68 and bull gear 70 so that finishing tool 22 engages workpiece 28 with a known constant force.
- actuators 26 a and 26 d have been described as pneumatic devices, it will be understood that the actuators may alternatively be hydraulic devices operating under the action of fluid pressure. In such embodiments, pressure regulators 38 would be adapted to regulate fluid pressure, as known in the art.
Abstract
An apparatus for maintaining constant force engagement between a finishing tool and a workpiece. The apparatus includes a motor supported on a rotatable base. A tool holder coupled to the motor supports a finishing tool at as point offset from a rotational axis of the base. The apparatus further includes an actuator configured to rotate the base, whereby the finishing tool is caused to engage the workpiece with a constant and known force.
Description
- The present invention pertains to the finishing of manufactured goods, and more particularly to an apparatus for maintaining a constant force between a finishing tool and a workpiece.
- In the manufacture or restoration of various products, it is often desirable to perform a finishing operation, such as buffing, grinding or polishing. For example, in the manufacture or restoration of fine jewelry, it is often desired to buff precious metal components to achieve a fine finish for aesthetic appearance. During such finishing operations, it is generally important not to apply excessive pressure of the finishing tool against the workpiece, which would otherwise cause unwanted excessive removal of material from the workpiece. Optimally, it is desired to maintain contact between the workpiece and the finishing tool at a known and constant force.
- Prior devices for maintaining a constant force between a finishing tool and a workpiece have typically involved complex mechanical structures, often incorporating electronic controls and feedback. Aside from an increased likelihood of malfunctioning, the complexity of these prior devices generally results in an increased cost, often to the point that use of the devices is prohibitive for economic reasons. By way of example, an automated finishing system might utilize a programmable computer-controlled robotic arm to engage a workpiece against a stationary finishing tool with a constant force. Such a configuration generally requires some type of force feedback to an appropriately programmed controller, as well as complicated programming code necessary to manipulate the robotic arm to engage the workpiece with a constant force. The time, effort, and equipment necessary to achieve the desired result of constant force finishing with this type of system is likely to increase the cost to an extent that use of such a device is prohibited in many applications.
- There is thus a need for a simple apparatus for maintaining a constant force between a finishing tool and a workpiece which overcomes drawbacks of the prior art, such as those described above.
- The present invention provides an apparatus for maintaining constant force engagement between a finishing tool and a workpiece. Advantageously, the apparatus facilitates efficient finishing of a workpiece by assuring that an adequate, but not excessive force is maintained against the workpiece by the finishing tool, regardless of variation of positioning of the workpiece relative to the tool, surface irregularities of the workpiece, or wear of the finishing tool. In an exemplary embodiment, the apparatus includes a motor supported on a rotatable base and coupled to a tool holder for supporting a finishing tool at a point offset from the rotational axis of the base. The rotatable base is coupled to an actuator configured to rotate the base and thereby cause the finishing tool to engage a workpiece. Advantageously, the actuator can be controlled to maintain a constant and known force between the finishing tool and the workpiece.
- In one aspect of the invention, the actuator is a pneumatic or hydraulic cylinder that is coupled to the base by a cable. The cylinder is coupled to a source of pressurized air or fluid that may be controlled to cause a piston of the cylinder to apply a constant and known force to the cable, whereby the finishing tool is caused to engage the workpiece with a constant force.
- In another aspect of the invention, the actuator is coupled to the rotatable base by a gear train. In one exemplary embodiment, the gear train comprises a rack and pinion, and the actuator is a pneumatic or hydraulic cylinder coupled to the rack. According to this embodiment, the pinion is coupled to the rotatable base whereby movement of the cylinder piston causes the base to rotate such that the finishing tool engages the workpiece with a constant force.
- In another aspect of the invention, the gear train comprises a bull and pinion. The actuator comprises a rotary pneumatic or hydraulic device and is coupled to the pinion gear. The bull gear is coupled to the rotatable base, whereby actuation of the rotary device causes the base to rotate such that the finishing tool engages the workpiece with a constant force.
- In yet another aspect of the invention, the actuator comprises a weight coupled to the rotatable base by a cable routed over a pulley. The weight may be selected to cause the base to rotate and engage the finishing tool against the workpiece with a constant force proportional to the weight.
- The features and objectives of the present invention will become more readily apparent from the following Detailed Description taken in conjunction with the accompanying drawings.
- The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with a general description of the invention given above, and the detailed description given below, serve to explain the invention.
- FIG. 1 is a perspective view of an exemplary apparatus for maintaining constant force engagement between a finishing tool and a workpiece according to the present invention;
- FIG. 2 is a perspective view of another exemplary embodiment of an apparatus according to present invention;
- FIGS.3A-3B are perspective views of additional exemplary embodiments of an apparatus according to present invention; and
- FIG. 4 is a perspective view of yet another exemplary embodiment of an apparatus according to the present invention.
- Referring to FIG. 1, there is shown an
exemplary apparatus 10 a for maintaining a constant force engagement between a finishing tool and a workpiece. Theapparatus 10 a includes amotor 12 supported on arotatable base 14. In the exemplary embodiment shown,base 14 comprises asupport surface 16 mounted upon avertical column 18 that is rotatably coupled to afootplate 20, wherebysupport surface 16 may be rotated about an axis 17 extending axially alongvertical column 18. The apparatus further includes afinishing tool 22, such as a buffing, grinding, or polishing wheel, operatively coupled to themotor 12 by atool holder 24, such as a collet or chuck. As thefinishing tool 22 is driven bymotor 12,actuator 26 a rotates thebase 14 to bring thefinishing tool 22 into contact with aworkpiece 28 to thereby perform finishing operations on theworkpiece 28. - While the
finishing tool 22 has been depicted in the exemplary embodiments herein as a disk or wheel coupled for rotational movement tomotor 12 bytool holder 24, it will be understood by those of ordinary skill in the art that finishingtool 22,tool holder 24, andmotor 12 may have various other configurations for finishing a workpiece, as known in the art. As a non-limiting example, the finishing tool may comprise a belt coupled to the motor for vibratory, orbital, or oscillatory motion. It will also be recognized that, while the various embodiments shown and described herein depictfinishing tool 22 coupled for rotation about an axis having a substantially perpendicular orientation with respect to rotational axis 17,finishing tool 22, along withtool holder 24 andmotor 12, may alternatively be configured for rotation about an axis parallel to axis 17, or even oblique to axis 17, providedfinishing tool 22 is offset from axis 17. - In the exemplary embodiment shown in FIG. 1,
workpiece 28 is supported by arobotic arm 30 and gripped by anend effector 32, but it will be recognized by those skilled in the art thatworkpiece 28 may alternatively be manually supported, or supported by other known devices for engagement withfinishing tool 22.Actuator 26 a comprises apneumatic cylinder 33 having apiston 34 coupled tobase 14 by acable 36, whereby movement of thepiston 34 causessupport plate 16 to rotate relative tofootplate 20. Thepneumatic cylinder 33 is coupled to a source of pressurized air (not shown) byhoses pressure regulator 38 is provided intermediate thecylinder 33 and the source of pressurized air and has acontrol knob 44 to permit adjustment of the tension applied tocable 36 bypiston 34, wherebyfinishing tool 22 may be caused to contactworkpiece 28 with a known force. Advantageously, the tension applied through thecable 36 bypneumatic cylinder 33 is maintained substantially constant such that the force between thefinishing tool 22 and theworkpiece 28 remains constant regardless of variation in positioning of the workpiece byrobot arm 30, wear of thefinishing tool 28, or variation in the surface of theworkpiece 28. - FIGS.2-4 illustrate other embodiments of the present invention utilizing various mechanisms for actuating
rotatable base 14 to movefinishing tool 22 into contact withworkpiece 28, in a manner similar to that described above for FIG. 1. In these embodiments, themotor 12,support surface 16,finishing tool 22, andtool holder 24 are the same as described above for FIG. 1 and these components shown in phantom for illustrative purposes. - Referring now to FIG. 2, there is shown another
exemplary apparatus 10 b for maintaining constant force contact between a finishing tool and a workpiece. In this embodiment,actuator 26 a again comprises apneumatic cylinder 33, howeverpiston 34 is coupled torotatable base 14 by a rack and pinion gear train. Specifically,rack 50 is coupled to thepiston 34 and engagespinion gear 52 coupled tobase 14, whereby linear movement ofpiston 34 under control ofpressure regulator 38 causessupport surface 16 to rotate. Rotation ofsupport surface 16 in turn movesfinishing tool 22 into contact with aworkpiece 28. Accordingly,pressure regulator 38 may be adjusted by manipulation ofknob 44 to control the movement ofpiston 34 such thatfinishing tool 22 is maintained in engagement againstworkpiece 28 with a known and constant force, as described above. - Referring now to FIG. 3A, there is shown another
exemplary apparatus 10 c of the present invention. In this embodiment, actuator 26 b comprises aweight 54 and apulley 56 coupled torotatable base 14 bycable 36.Weight 54 maintains constant tension incable 36 to causebase 14 to rotate, thereby bringingfinishing tool 22 into contact withworkpiece 28 in a manner similar to that described above for FIG. 1. It will be recognized thatweight 54 can be varied to apply any desired force tocable 36 such that a known and constant force can be maintained betweenfinishing tool 22 andworkpiece 28. - FIG. 3B illustrates another
exemplary apparatus 10 d of the present invention, similar to that shown in FIG. 3A, but whereinactuator 26 c comprises a constant force spring that is coupled torotatable base 14 bycable 36. Accordingly, the constant force spring may be selected to provide a desired tension incable 36 such that finishingtool 22 is maintained in constant force contact withworkpiece 28. - Referring to FIG. 4, there is shown yet another
exemplary apparatus 10 e of the present invention. In this embodiment, actuator 26 d comprises a rotarypneumatic device 60 coupled torotatable base 14 by a bull and pinion gear train. As shown in FIG. 4, rotarypneumatic device 60 is connected to a source of pressurized air (not shown) byhoses pressure regulator 66 with control knob 67. Apinion gear 68 fixed to the output shaft of the rotarypneumatic device 60 engages abull gear 70 coupled torotatable base 14 such that rotation ofpinion gear 68 by the rotarypneumatic device 60, actuated by the pressurized air, causesrotatable base 14 to move finishingtool 22 into contact withworkpiece 28. Accordingly,pressure regulator 66 may be adjusted such that rotarypneumatic device 60 applies a known torque torotatable base 14 throughpinion gear 68 andbull gear 70 so that finishingtool 22 engagesworkpiece 28 with a known constant force. - While
actuators 26 a and 26 d have been described as pneumatic devices, it will be understood that the actuators may alternatively be hydraulic devices operating under the action of fluid pressure. In such embodiments,pressure regulators 38 would be adapted to regulate fluid pressure, as known in the art. - While the present invention has been illustrated by the description of the various embodiments thereof, and while the embodiments have been described in considerable detail, it is not intended to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications will readily appear to those skilled in the art. The invention in its broader aspects is therefore not limited to the specific details, representative apparatus and methods and illustrative examples shown and described. Accordingly, departures may be made from such details without departing from the scope or spirit of the general inventive concept.
Claims (11)
1. An apparatus for maintaining constant force engagement between a finishing tool and a workpiece, the apparatus comprising:
a base mounted for rotation about an axis of rotation;
a motor supported on said base;
a tool holder operatively coupled to said motor and configured to receive the finishing tool and to support the finishing tool at a point offset from the rotational axis of said base, whereby the finishing tool is driven by said motor; and
an actuator coupled to said base and configured to rotate said base to engage the finishing tool against the workpiece at a constant force.
2. The apparatus of claim 1 , wherein said actuator comprises a linear hydraulic cylinder.
3. The apparatus of claim 1 , wherein said actuator comprises a linear pneumatic cylinder.
4. The apparatus of claim 1 , wherein said actuator comprises a rotary pneumatic device.
5. The apparatus of claim 1 , wherein said actuator comprises a rotary hydraulic device.
6. The apparatus of claim 1 , wherein said actuator comprises a spring configured to apply a constant force to said base.
7. The apparatus of claim 1 , wherein said actuator comprises a weight coupled to said base.
8. The apparatus of claim 1 , wherein said actuator is operatively coupled to said base by a gear train.
9. The apparatus of claim 8 , wherein said gear train comprises a rack gear and a pinion gear.
10. The apparatus of claim 8 , wherein said gear train comprises a bull gear and a pinion gear.
11. The apparatus of claim 1 , wherein actuator is operatively coupled to said base by a cable.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/360,683 US20040157529A1 (en) | 2003-02-07 | 2003-02-07 | Apparatus for maintaining constant force between a finishing tool and a workpiece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US10/360,683 US20040157529A1 (en) | 2003-02-07 | 2003-02-07 | Apparatus for maintaining constant force between a finishing tool and a workpiece |
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US20040157529A1 true US20040157529A1 (en) | 2004-08-12 |
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US10/360,683 Abandoned US20040157529A1 (en) | 2003-02-07 | 2003-02-07 | Apparatus for maintaining constant force between a finishing tool and a workpiece |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130040536A1 (en) * | 2011-08-08 | 2013-02-14 | Apple Inc. | Force-controlled surface finishing through the use of a passive magnetic constant-force device |
CN103586763A (en) * | 2013-11-05 | 2014-02-19 | 巫溪县发瑞木制品专业合作社 | Wooden comb polisher |
CN105437017A (en) * | 2015-11-18 | 2016-03-30 | 无锡科诺达电子有限公司 | Periphery grinding device for sapphire |
JP2016172297A (en) * | 2015-03-17 | 2016-09-29 | 川崎重工業株式会社 | Plate material grinding device |
US20220152779A1 (en) * | 2020-11-18 | 2022-05-19 | Yu-Sheng Hsu | Servo driven compliant mechanism |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5241792A (en) * | 1991-02-08 | 1993-09-07 | Yamaha Hatsudoki Kabushiki Kaisha | Method and apparatus for surface finishing |
US6609962B1 (en) * | 1999-05-17 | 2003-08-26 | Ebara Corporation | Dressing apparatus and polishing apparatus |
-
2003
- 2003-02-07 US US10/360,683 patent/US20040157529A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5241792A (en) * | 1991-02-08 | 1993-09-07 | Yamaha Hatsudoki Kabushiki Kaisha | Method and apparatus for surface finishing |
US6609962B1 (en) * | 1999-05-17 | 2003-08-26 | Ebara Corporation | Dressing apparatus and polishing apparatus |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130040536A1 (en) * | 2011-08-08 | 2013-02-14 | Apple Inc. | Force-controlled surface finishing through the use of a passive magnetic constant-force device |
US8550876B2 (en) * | 2011-08-08 | 2013-10-08 | Apple Inc. | Force-controlled surface finishing through the use of a passive magnetic constant-force device |
CN103586763A (en) * | 2013-11-05 | 2014-02-19 | 巫溪县发瑞木制品专业合作社 | Wooden comb polisher |
JP2016172297A (en) * | 2015-03-17 | 2016-09-29 | 川崎重工業株式会社 | Plate material grinding device |
CN105437017A (en) * | 2015-11-18 | 2016-03-30 | 无锡科诺达电子有限公司 | Periphery grinding device for sapphire |
US20220152779A1 (en) * | 2020-11-18 | 2022-05-19 | Yu-Sheng Hsu | Servo driven compliant mechanism |
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Owner name: ANTENEN RESEARCH CO., OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ANTENEN, STEVEN B.;REEL/FRAME:013765/0956 Effective date: 20030204 |
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