CN105345545A

CN105345545A - Clamp

Info

Publication number: CN105345545A
Application number: CN201510642594.0A
Authority: CN
Inventors: 甘万辉; 杨建树
Original assignee: Guangdong Evenwin Precision Technology Co Ltd
Current assignee: Guangdong Evenwin Precision Technology Co Ltd
Priority date: 2015-09-29
Filing date: 2015-09-29
Publication date: 2016-02-24
Anticipated expiration: 2035-09-29
Also published as: CN105345545B

Abstract

The invention relates to a clamp. The clamp is characterized in that the clamp comprises a base, a connecting part and a sub-clamp arranged on the base. The sub-clamp is provided with positioning holes and an installation position used for installing a part to be machined. Positioning columns matched with the positioning holes are arranged on the base and penetrate through the positioning holes. The sub-clamp can move along the positioning columns. The connecting part comprises sleeve bodies and a plurality of balls arranged on the sleeve bodies. Each sleeve body is of an annular body structure. A plurality of containing positions are formed in the side wall of each sleeve body. The positioning columns are sleeved with the sleeve bodies, and the sleeve bodies penetrate through the positioning holes and are at least partially contained in the positioning holes. The balls are contained in the containing positions corresponding to the balls respectively, protrude out of the side walls of the sleeve bodies and are located between the inner walls of the positioning holes and the positioning columns. The balls abut against the inner walls of the positioning holes and/or abut against the positioning columns. According to the clamp, the installation precision of the clamp is improved, and machining can be more accurate.

Description

Fixture

Technical field

The present invention relates to mechanical manufacturing field, particularly relate to a kind of fixture.

Background technology

Fixture refers to be used for fixing processing object in machine-building process, to make processing object have correct position, and then the device making fixing processing object accept construction or detect.

Current fixture is adding man-hour, is usually located fixture by alignment pin, because alignment pin and fixture are sliding friction, its frictional force is comparatively large, and therefore when designing fixture, the fit clearance between alignment pin and fixture is larger, like this in Precision Machining, make the positioning precision of fixture poor.

Summary of the invention

Based on this, be necessary to provide the fixture that a kind of positioning precision is better, the life-span is longer.

A kind of fixture, is characterized in that, comprising: base, connecting portion, and be arranged at the sub-folder tool on described base,

Described sub-folder tool is offered locating hole and the installation position for installing workpiece to be added;

Described base is provided with the locating dowel of mating with described locating hole, and described locating dowel wears described locating hole, and described sub-folder tool is removable along described locating dowel;

Described connecting portion comprises body and is arranged at the some balls on described body, described body is ring structure, sidewall offers some accommodating positions, described body is sheathed on outside described locating dowel, and wear described locating hole, described body is placed in described locating hole at least partly, described some balls are placed in described accommodating position respectively, and the sidewall of described body is protruded from described accommodating position, and between the inwall and described locating dowel of described locating hole, described some balls and described locating hole inwall abut against, and/or abut against with described locating dowel.

Above-mentioned fixture, because connecting portion has ball, can reduce the frictional force of sub-folder tool when mounted and between locating dowel, and then extends the service life of fixture.In addition, owing to being made by installation portion sub-folder tool and locating dowel be slidably connected, the fit clearance between installing hole and locating dowel can be made less, and then improve the installation accuracy of sub-folder tool, order processing is more accurate.

Accompanying drawing explanation

Fig. 1 is the structural representation of the fixture of a preferred embodiment of the present invention;

Fig. 2 is the explosive view of fixture shown in Fig. 1;

Fig. 3 is the side view of fixture shown in Fig. 1;

Fig. 4 is the structural representation of the different conditions of fixture shown in Fig. 1;

Fig. 5 is the side view of fixture shown in Fig. 4;

Fig. 6 is the structural representation of the fixture of another embodiment of the present invention;

Fig. 7 is the explosive view of the fixture of another embodiment of the present invention;

Fig. 8 is the side view of fixture shown in Fig. 7;

Fig. 9 is the sectional view of fixture shown in Fig. 7;

Figure 10 is the partial enlarged drawing at the A of fixture shown in Fig. 9 place.

Detailed description of the invention

For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.Better embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make to disclosure of the present invention understand more thorough comprehensively.

It should be noted that, when element is called as " being arranged at " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement just for illustrative purposes, do not represent it is unique embodiment.

Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe concrete embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.

It is respectively structural representation and the explosive view thereof of the fixture 10 of a preferred embodiment of the present invention as shown in Figures 1 and 2.

Fixture 10 comprises: base 100 and the sub-folder tool 200, the fixed part 300 that are arranged on base 100.Wherein, the limited block 130 that base 100 comprises base body 110, is arranged at the base plate 120 on base body 110 and is arranged on base plate 120, sub-folder tool 200 is arranged on limited block 130, and fixed part 300 is arranged on base body 110.

Sub-folder tool 200 comprises body 210 and briquetting 220.Wherein, body 210 has first surface 211 and the second surface 212 of opposing setting, first surface 211 offers the through hole 213 matched with described limited block 130, and for installing workpiece (not shown) to be added and running through the installation position 214 of second surface 212.Briquetting 220 is arranged on body 210, and briquetting 220 has the first locating surface 221, wherein, the first locating surface 221 abuts against with first surface 211, and concordant, first locating surface 221 covers through hole 213 at least partly, and forms accommodating cavity with through hole 213, for accommodating limited block 130.

See also Fig. 3 to Fig. 5, it is respectively the side view of fixture 10 shown in Fig. 1, the structural representation of the different conditions of fixture 10 shown in Fig. 1, and side view.

Limited block 130 is the second locating surface 131 away from the surface of base plate 120, and the second locating surface 131 is concordant with the first surface 211 of body 210.Concrete, when first surface 211 is towards base plate 120, the second locating surface 131 of limited block 130 abuts the first surface 211 of body 210, to make first surface 211 concordant with the second locating surface 131; When second surface 212 is towards base plate 120, limited block 130 is placed in accommodating cavity, second locating surface 131 passes through described accommodating cavity and abuts against with the first locating surface 221 of described briquetting 220, to make the first surface 211 of body 210 concordant with the second locating surface 131.

Fixed part 300 supports sub-folder tool 200, fits tightly with first surface 211 or the first locating surface 221 to make the second locating surface 131.In the present embodiment, fixed part 300 is multiple, and multiple fixed part 300 along the distribution of base 100 periphery, and abuts against with the periphery of sub-folder tool 200.Concrete, fixed part 300 comprises cylinder, and is arranged at the pressing plate 310 on cylinder, and pressing plate 310 and sub-folder tool 200 support.When first surface 211 is towards base plate 120, pressing plate 310 and body 210 abut against; When second surface 212 is towards base plate 120, surface opposing with the first locating surface 221 on the pressing plate of fixed part 300 310 and briquetting 220 abuts against.

In other embodiments, fixed part 300 also can be arranged on the base plate 120 of base 100.It should be noted that, according to actual conditions, also can omit fixed part 300.

First tool setting when using above-mentioned fixture 10, makes the second locating surface 131 be datum level, is positioned on fixture 10 by workpiece to be added.When processing workpiece to be added is when the first machined surface of first surface 211, by sheathed for sub-folder tool 200 limited block 130, and makes the second locating surface 131 abut with the first locating surface 221, thus make first surface 211 concordant with datum level second locating surface 131.Afterwards, by the fastening sub-folder tool 200 of fixed part 300, the second locating surface 131 and the first locating surface 221 is made to fit tightly.Finally, the first machined surface is processed.After first machined surface processing, when processing and the second machined surface that the first machined surface is opposing, turn over rotor clamper 200, make the first surface 211 of sub-folder tool 200 towards base plate 120, and make the second locating surface 131 abut against with first surface 211, thus make the second locating surface 131 concordant with the first surface 211 of the sub-folder tool 200 after upset, clamp sub-folder tool 200 afterwards, and process the second machined surface.It should be noted that, also can first process the second machined surface, aft-loaded airfoil first machined surface.

Above-mentioned fixture 10 process workpiece to be added positive and negative two surperficial time, namely when the first machined surface and the second machined surface, processing datum is the first surface 211 that sub-folder tool 200 fits with the second locating surface 131, decreases tool setting number of times on the one hand, improves working (machining) efficiency; Reduce the cumulative errors because tool setting brings to different datum level on the other hand, and then improve machining accuracy.In addition, process workpiece to be added positive and negative two surperficial time, without the need to by workpiece to be added from sub-folder tool 200 take out, directly turn over rotor clamper 200 just can, further increase working (machining) efficiency.

It should be noted that, in the present embodiment, when processing the tow sides of workpiece to be added, sub-folder tool 200 is all arranged with base plate 120 relative spacing, discharges processing scrap to facilitate.In other embodiments, when processing one of them surface, sub-folder tool 200 also can abut with base plate 120.

Please again consult Fig. 3 and Fig. 5.

In the present embodiment, base 100 comprises two base plates 120, be respectively base plate 120A, base plate 120B, two base plates 120 are all arranged on body 110, such as, fixture 10 comprises two bases 100, and the body 110 of one of them base 100 is provided with base plate 120A, and the body 110 of another base 100 is provided with base plate 120B.For another example, the body 110 of base 100 is furnished with two base plate 120As corresponding with it and base plate 120B, according to actual needs, is arranged on body 110 by base plate 120A or 120B of needs.Or, body 110 is provided with simultaneously two base plates 120A, 120B, and two base plates 120A, 120B are set up in parallel.

Limited block 130 is multiple, and the second locating surface 131 of multiple limited block 130 is all in the same plane.Concrete, two base plates 120A, 120B are equipped with limited block 130, second locating surface 131 of the limited block 130 on base plate 120A is all in the same plane, second locating surface 131 of the limited block 130 on base plate 120B is all in the same plane, and limited block 130 quantity on base plate 120A, base plate 120B is identical, distributes different.

When processing the first machined surface, sub-folder tool 200 is positioned on base plate 120B, and the second surface 212 of body 210 is towards base plate 120B, and the limited block 130 be positioned on base plate 120B wears through hole 213.When processing the second machined surface, taken out by sub-folder tool 200 from base plate 120B before, and be positioned on another base plate 120A, now, the first surface 211 of body 210 towards this base plate 120A, and abuts against with the limited block 130 be positioned on this base plate 120A.

The limited block 130 of different distributions on two base plates 120, during one of them surface of order processing workpiece to be added, through hole 213 can sheathed limited block 130, when processing another surface, through hole 213 can stagger with limited block 130, and makes limited block 130 abut the surface offering through hole 213.Like this, fixture 10 only need change limited block 130 on base plate 120 position just can, save design cost.

In order to make processing more accurate, body 210 is also provided with locating hole 215, and base plate 120 is provided with the locating dowel 140 of mating with locating hole 215, and locating dowel 140 wears locating hole 215, to locate body 210.

In the present embodiment, body 210 is rectangle, and through hole 213 is positioned at the relative end regions of body 210 two, and installation position 214 is positioned at the central region of body 210.And each end regions has two through holes 213 and a locating hole 215, and locating hole 215 is between two through holes 213.Also can be understood as, two ends that body 210 is relative all have a locating hole 215.Locating hole 215 also can be other quantity, and such as, each end of rectangular body 210 all has at least one locating hole 215.

See also Fig. 6, it is the structural representation of the fixture 20 of another embodiment of the present invention.

With above-described embodiment unlike, in the present embodiment, body 210 offers two groups of locating holes 215, and when first surface 211 is towards base plate 120, locating dowel 140 correspondence wears wherein one group of locating hole 215; When second surface 212 is towards base plate 120, locating dowel 140 correspondence wears and makes one group of locating hole 215.Also can be understood as, when being switched to first surface 211 from second surface 212, namely after turning over rotor clamper 200, gyrator fixture 200 simultaneously, after the limited block 130 wearing through hole 213 before order rotates and through hole 213 stagger, and abut against with first surface 211, locating dowel 140 wears with in one group of different before locating hole 215.

Concrete, when body 210 is rectangle, each side area of body 210 is equipped with a locating hole 215, the locating hole 215 often organized on relative side area is one group, when first surface 211 is towards base plate 120, and wherein one group of sheathed locating dowel 140 of locating hole 215, another group locating hole 215 is vacant, when second surface 212 is towards base plate 120, one group of before vacant locating hole 215 overlaps desired location, and one group of locating hole 215 of sheathed locating dowel 140 is vacant before.

Like this, just two-sided processing can be realized on of base 100 base plate 120.

See also Fig. 7 and Fig. 8, it is structural representation and the side view thereof of the fixture 30 of another embodiment of the present invention.

Fixture 30 comprises: base 100, connecting portion 400, and is all arranged at fixed part 300, the sub-folder tool 200 on base 100.Wherein, sub-folder tool 200 is offered locating hole 215 and installation position 214.Base 100 is provided with the locating dowel 140 of mating with locating hole 215, and locating dowel 140 wears locating hole 215, and sub-folder tool 200 is removable along locating dowel 140.Connecting portion 400 comprises body 410 and is arranged at the some balls 420 on body 410.Concrete, body 410 is ring structure, and sidewall offers some accommodating positions, body 410 is sheathed on outside locating dowel 140, and wears locating hole 215, and body 410 is placed in locating hole 215 at least partly, also can be understood as, body 410 is between locating hole 215 and locating dowel 140.Some balls 420 are placed in accommodating position respectively, and protrude the sidewall of body 410 from accommodating position, and between the inwall and locating dowel 140 of locating hole 215, some balls 420 abut against with locating hole 215 inwall, and/or abut against with locating dowel 140.Also can be understood as, some balls 420 expose body 410 by accommodating position, with the outer surface making ball 420 protrude body 410 sidewall, and abut against with the inwall of locating hole 215, and/or with the inner surface making ball 420 protrude body 410 sidewall, and abut against with locating dowel 140.In the present embodiment, accommodating position is uniformly distributed on the sidewall of described body 410, and to make ball 420 be uniformly distributed on the sidewall of body 410, and some balls 420 interval is arranged.Sub-folder tool 200 is fixed on described base 100 by fixed part 300.

In other embodiments, accommodating position also can start intensive gradually from side.

When using above-mentioned fixture 30, first workpiece to be added is installed on installation position 214, afterwards, sub-folder tool 200 is arranged on base 100.When sub-folder tool 200 is arranged on base 100, sub-folder tool 200 is located by locating dowel 140, concrete, make the sheathed locating dowel 140 of the locating hole 215 of sub-folder tool 200, because connecting portion 400 is between locating hole 215 and locating dowel 140, during sub-folder tool 200 sheathed locating dowel 140, roll between locating hole 215 and locating dowel 140 by connecting portion 400 ball 420, be installed on swimmingly on base 100 to make sub-folder tool 200.

Above-mentioned fixture 30, because connecting portion 400 has ball 420, can reduce the frictional force of sub-folder tool 200 when mounted and between locating dowel 140, and then extends the service life of fixture 30.In addition, owing to being made by installation portion sub-folder tool 200 and locating dowel 140 be slidably connected, the fit clearance between installing hole and locating dowel 140 can be made less, and then improve the installation accuracy of sub-folder tool 200, order processing is more accurate.

See also Fig. 9 and Figure 10, it is respectively the partial enlarged drawing at the sectional view of fixture 30 shown in Fig. 7 and the A place of Fig. 9.

Sub-folder tool 200 comprises body 210 and is arranged at the guide pin bushing 230 on body 210, and wherein, installation position 214 is positioned on body 210, and body 210 offers installing hole; Guide pin bushing 230 wears installing hole, and locating hole 215 is positioned on guide pin bushing 230, and locating hole 215 is coaxial with installing hole.The precision of guide pin bushing 230 is greater than the precision of body 210, and then further increases the positioning precision of sub-folder tool 200.

In the present embodiment, the end of guide pin bushing 230 side is outward extended with shackle member 231, shackle member 231 clamping body 210.Concrete installing hole is that ladder is poroid, and the region that shoulder hole two parts intersect has cascaded surface, and shackle member 231 clamping cascaded surface, is stably arranged on body 210 to make guide pin bushing 230.

In the present embodiment, body 410 relative positioning post 140 and body 210 all removable, also can be understood as, body 410 and locating dowel 140 and the separable setting of body 210, and when wearing locating hole 215, body 410 can move along locating dowel 140.Some balls 420 protrude inner surface and the outer surface of body 410 simultaneously, and abut against with the inwall of locating dowel 140 and locating hole 215 respectively.Such as, connecting portion 400 is maintainance set structure.

The movable connecting portion 400 arranged, when sub-folder tool 200 is installed in order, sub-folder tool 200 is not easily stuck with the locating dowel 140 on base 100, make its installation more smooth, and modulability is better.

Concrete, locating dowel 140 comprises and wears part 141, is arranged at the block 142 worn on part 141, and the sheathed elastic component 143 wearing part 141.Wherein, wearing part 141 is positioned on base 100, block 142 is positioned at and wears part 141 one end away from base 100, body 410 is sheathed wears part 141, and between elastic component 143 and block 142, and one end of body 410 and elastic component 143 support, the other end supports with block 142, to be limited the position of body 410 by block 142 and elastic component 143, and body 410 is removable along the elasticity direction of elastic component 143, and namely the elasticity direction of elastic component 143 is identical with the bearing of trend wearing part 141.

Further, in the present embodiment, block 142 comprises supporting piece 142A and is arranged at the connector 142B on supporting piece 142A.Wherein, connector 142B is arranged at and wears on part 141, and supporting piece 142A and body 410 offset, and to limit the position of body 410, and connector 142B is removable along wearing part 141, with the distance regulating supporting piece 142A and wear between part 141.Such as, connector 142B has helicitic texture, its with wear part 141 and be spirally connected, by rotary connector 142B, adjustment supporting piece 142A and the distance worn between part 141, and then the position of restriction body 410.

In addition, it is pointed out that according to actual conditions, body 410 also can be fixedly connected with locating dowel 140 or sub-folder tool 200.Such as, body 410 fixed cover is located in locating dowel 140, and ball 420 protrudes the outer surface of body 410, and abuts against with the inwall of locating hole 215.For another example, body 410 is fixedly installed in locating hole 215, and ball 420 protrudes the inner surface of body 410, and abuts against with locating dowel 140.

Please again consult Fig. 7.

Sub-folder tool 200 also comprises the multiple guide parts 240 be arranged on body 210, and multiple guide part 240 is arranged on the sidewall of body 210, and distributes along the periphery of body 210, installs sub-folder tool 200 for guiding.In the present embodiment, guide part 240 is strip, lays respectively at the top corner regions of body 210, and abuts against with the sidewall of base 100, moves along the bearing of trend of base 100 sidewall to make body 210.

Guide part 240 assists sub-folder tool 200 to install, and makes it install more fast, stablize, enhances productivity.

Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this description is recorded.

The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims

1. a fixture, is characterized in that, comprising: base, connecting portion, and is arranged at the sub-folder tool on described base,

2. detent mechanism according to claim 1, it is characterized in that, described sub-folder tool comprises body and is arranged at the guide pin bushing on described body, described body offers installing hole, described guide pin bushing wears described installing hole, described locating hole is positioned on described guide pin bushing, and described locating hole is coaxial with described installing hole.

3. detent mechanism according to claim 2, is characterized in that, the end of described guide pin bushing side is outward extended with shackle member, body described in described shackle member clamping.

4. detent mechanism according to claim 1, it is characterized in that, the relatively described locating dowel of described body and described body all removable, described some balls protrude inner surface and the outer surface of described body side simultaneously, and abut against with the inwall of described locating dowel and described locating hole respectively.

5. detent mechanism according to claim 4, is characterized in that, described locating dowel comprise wear part, be arranged at described in wear block on part, and sheathed described in wear the elastic component of part,

The described part that wears is positioned on described base, wear part one end away from described base described in described block is positioned at, described in described body is sheathed, wear part, between described elastic component and described block, and one end of described body and described elastic component support, the other end and described block support.

6. detent mechanism according to claim 5, it is characterized in that, described block comprises supporting piece and is arranged at the connector on described supporting piece, wear described in described connector is arranged on part, described supporting piece and described body offset, and it is removable to wear part described in described connector edge, to regulate described supporting piece and the described distance worn between part.

7. detent mechanism according to claim 6, is characterized in that, described connector has helicitic texture, and is spirally connected with the described part that wears.

8. detent mechanism according to claim 1, is characterized in that, described body fixed cover is located in described locating dowel, and described ball protrudes the outer surface of described body, and abuts against with the inwall of described locating hole.

9. detent mechanism according to claim 1, is characterized in that, described body is fixedly installed in described locating hole, and described ball protrudes the inner surface of described body, and abuts against with described locating dowel.

10. detent mechanism according to claim 1, is characterized in that, described accommodating position is uniformly distributed on the sidewall of described body.