CN209533151U - Clamping device - Google Patents

Abstract

The utility model relates to a kind of clamping device (10), the higher material of its pressure-containing parts (58) intensity compared with the constituent material of the clamp body (14) constituted with aluminum or aluminum alloy is constituted, it is set in a manner of being contacted with insertion part (206a, 206b) clamp body (14), insertion part (206a, 206b) acts on the load based on clamping force in the clamping of workpiece (W).In the clamping of workpiece (W), from insertion part (206a, 206b) to the first compression face (S1) used load of pressure-containing parts (58) and from pressure-containing parts (58) to the second compression face (S2) used load of clamp body (14), the area of the second compression face (S2) is greater than the area of the first compression face (S1).

Description

Clamping device

Technical field

The clamping device of workpiece is clamped the utility model relates to a kind of clamp arm by rotation.

Background technique

This clamping device has the clamp body (shell) for the driving portion for being provided with driving clamp arm.Clamp body is sometimes with light It is constituted with aluminium (for example, referring to No. 5845897 specifications of U.S. Patent No.) for the purpose of quantization.

However, clamping device is for example and the insert fixation member in the support holes for being formed in clamp body relative to fixation Component is fixed.In this case, when by clamp arm by Workpiece clamping, (support holes are formed to clamp body from fixation member Wall surface) used load.

When being constituted clamp body as above-mentioned conventional art with aluminium, lightweight can be realized, but then, material is strong Degree becomes lower.Therefore, it is possible to due to the load for bearing to act on clamp body from fixation member area and cause to result from The stress of clamp body is greater than allowable stress and clamp body is made to deform.

Utility model content

The utility model considers such project and completes that its purpose is to provide one kind can be realized lightweight simultaneously And it is able to suppress the clamping device of the deformation of clamp body.

One mode of the utility model is the clamping device that workpiece is clamped by the clamp arm of rotation, is had: fixture Body, the clamp body are made of aluminum or aluminum alloy；Driving portion, the driving portion are set to the clamp body, for making the clamp arm Rotation；And pressure-containing parts, the pressure-containing parts are made of the higher material of the constituent material intensity than the clamp body, with insert The mode for entering component contact is set to the clamp body, which acts in the clamping of the workpiece based on clamping force Load, in the clamping of the workpiece, from the insertion part to the first compression face used load of the pressure-containing parts, and From the pressure-containing parts to the second compression face used load of the clamp body, the area of second compression face is greater than described the The area of one compression face.

According to the utility model, clamp body is constituted with aluminum or aluminum alloy, therefore can be realized the lightweight of clamping device.Separately Outside, can be born with the second compression face of clamp body in the clamping of workpiece from insertion part be applied to the first of pressure-containing parts by The load of pressure surface.It reduces thereby, it is possible to keep the compression area of clamp body bigger and generates stress, therefore be able to suppress clamp body Deformation.

Detailed description of the invention

According to the explanation that collaboration attached drawing carries out following preferred embodiment examples, above-mentioned objects, features and advantages become It obtains definitely.

Fig. 1 is the perspective view of clamping device involved in an embodiment of the utility model.

Fig. 2 is the longitudinal section view of the clamping device of Fig. 1.

Fig. 3 is the longitudinal section view of the clamp body (cover member) of Fig. 1.

Fig. 4 A is along the sectional elevation of the IVA-IVA line of Fig. 3, and Fig. 4 B is the perspective view of the pressure-containing parts of Fig. 3.

Fig. 5 is the installation instructions figure that clamp body is installed to fixation member.

Fig. 6 is the explanatory diagram that the load of pressure-containing parts of Fig. 3 is resulted from the clamping of workpiece.

Fig. 7 is the longitudinal section view for being provided with the clamp body (cover member) of pressure-containing parts involved in first variation.

Fig. 8 A is along the sectional elevation of the VIIIA-VIIIA line of Fig. 7, and Fig. 8 B is the perspective view of the pressure-containing parts of Fig. 7.

Fig. 9 is the explanatory diagram that the load of pressure-containing parts of Fig. 7 is resulted from the clamping of workpiece.

Figure 10 is the longitudinal section view for being provided with the clamp body (cover member) of pressure-containing parts involved in the second variation.

Figure 11 A is along the sectional elevation of the XIA-XIA line of Figure 10, and Figure 11 B is the perspective view of the pressure-containing parts of Figure 10.

Figure 12 is the explanatory diagram that the load of pressure-containing parts of Figure 10 is resulted from the clamping of workpiece.

Specific embodiment

Hereinafter, enumerating preferred embodiment while referring to attached drawing to clamping device involved in the utility model It is illustrated.

As shown in fig. 6, clamping device 10 involved in an embodiment of the utility model be, for example, automobile etc. from Clamping in dynamic assembly line for being clamped when being welded to each other the plates (workpiece W) such as multiple steel plates of compression molding fills It sets.

As shown in Figures 1 and 2, clamping device 10 has for rotating the clamp arm 200 for clamping workpiece W (referring to Fig. 6) Driving portion 12 and be set to the clamp body 14 of driving portion 12.

In Fig. 2, driving portion 12 has driving portion main body 16, connector 18, link mechanism 20, support rod 22 and rotation axis 24.Driving portion main body 16 is configured to fluid pressure cylinder.But driving portion main body 16 is also configured to electric actuator.

Driving portion main body 16 includes cylinder barrel 26, end block 28, bowl cover 30, piston 32 and piston rod 34.Cylinder barrel 26 is formed as flat Flat tubular.

It is formed with first port 36 and second port 38 in cylinder barrel 26, the first port 36 and second port 38 are for carrying out Supply and discharge for the compression fluid for moving back and forth piston 32.End block 28 is by the one end (direction arrow A1 of cylinder barrel 26 On) closure of openings.Bowl cover 30 is by the closure of openings of the another side (on the direction arrow A2) of cylinder barrel 26.

Piston 32 is matched in cylinder barrel 26 to be set as to be displaced along its axis direction.The one end and piston 32 of piston rod 34 connect Knot.Piston rod 34 is extended out via the rod aperture 40 of bowl cover 30 to the side opposite with end block 28.In the another of piston rod 34 End is linked with connector 18.

The reciprocating motion of piston 32 is transformed to the rotational action (rotary motion) of rotation axis 24 by link mechanism 20.Connecting rod machine Structure 20 includes the carrier bar 42 extended in circular arc.The one end of carrier bar 42 is rotatably set to the bearing being arranged in connector 18 Axis 44.The other end of carrier bar 42 is rotatably set to the support shaft 46 being arranged in support rod 22.Rotation axis 24 and bearing Bar 22 links.Clamp arm 200 is installed in rotation axis 24.

Clamp body 14 accommodates the one of a part of piston rod 34, connector 18, link mechanism 20, support rod 22 and rotation axis 24 Part, and link with the end on the direction arrow A2 of cylinder barrel 26.

As shown in Figure 1, clamp body 14 has the first cover member 48a and the second cover member 48b in construction is split around.The One cover member 48a and the second cover member 48b are symmetrically constituted, interconnected by multiple screwed parts 50.Hereinafter, In the case where not distinguishing especially the first cover member 48a and the second cover member 48b, it is simply referred as " cover member 48 ".

Cover member 48 is the cast member (die casting) of the aluminum or aluminum alloy of the material as lightweight.Cover member 48 is along work The axis direction of plug 32 extends (referring to Fig. 2).

As shown in Figures 1 and 3, the through hole 52 configured for rotation axis 24 is formed in cover member 48.Form through hole 52 Wall surface rotation axis 24 is supported.The outer surface of cover member 48 be formed with the first mounting hole 54a, the second mounting hole 54b, First support holes 56a and the second support holes 56b.

In Fig. 3, the first mounting hole 54a is the screw thread with the end screwed togather with the first secure component 204a (installation bolt) Hole, the first secure component 204a are used to for cover member 48 to be fixed to fixation member 202 (referring to Fig. 5).First mounting hole 54a In the one end (direction arrow A1) on the length direction of cover member 48.

In other words, the first mounting hole 54a is located at the substantial middle position on the length direction of clamping device 10.First installation Hole 54a is located on the direction arrow A1 of through hole 52.That is, the first mounting hole 54a is located at the width direction center than cover member 48 By the position in a side side (direction arrow B1).

Second mounting hole 54b is the threaded hole with the end screwed togather with the second secure component 204b (installation bolt), this Two secure component 204b are used to for cover member 48 to be fixed to fixation member 202 (referring to Fig. 5).Second mounting hole 54b is located at than the One mounting hole 54a leans on the position in the direction arrow B2.Second mounting hole 54b is located at than the width direction center of cover member 48 by another The position of square side (direction arrow B2).

First support holes 56a be for the first insertion part 206a (parallel pin) insertion pin hole with the end (recess portion), first Insertion part 206a acts on the load based on clamping force in the clamping of workpiece W (referring to Fig. 4 A and Fig. 5).First support holes 56a Between the first mounting hole 54a and through hole 52.First support holes 56a is located on the direction arrow B1 of the second mounting hole 54b. That is, the first support holes 56a is located at the position for leaning on a side side than the width direction center of cover member 48.

Second support holes 56b be for the second insertion part 206b (parallel pin) insertion pin hole with the end (recess portion), second Insertion part 206b acts on the load based on clamping force in the clamping of workpiece W.Second support holes 56b is located at the first mounting hole On the direction arrow B2 of 54a.That is, the second support holes 56b is located at than the substantial middle and cover portion on the length direction of cover member 48 The position of another party side is leaned in the width direction center of part 48.

That is, the first support holes 56a is located at the position for leaning on 52 side of through hole than the second support holes 56b.In other words, the first bearing Hole 56a is located adjacent to the side of contact portion 200a compared with the second support holes 56b, and contact portion 200a is to pass through clamp arm 200 by the part contacted with workpiece W in clamp arm 200 under clamped condition that workpiece W is clamped (referring to Fig. 6).

As shown in Fig. 3 and Fig. 4 A, in cover member 48, with for supporting fixture body 14 the first insertion part 206a and The mode of second insertion part 206b contact is provided with pressure-containing parts 58.Pressure-containing parts 58 includes to be configured at by insert-molding The first compression plate 58a and the second compression plate 58b in the wall portion of cover member 48.

First compression plate 58a is configured at position corresponding with the first support holes 56a.First compression plate 58a is by than cover member The higher material of constituent material intensity (the high material of allowable stress) of 48 (clamp bodies 14) is constituted.Specifically, first is pressurized Plate 58a is made of ferroalloy (for example, steel).But the constituent material of the first compression plate 58a is not limited to ferroalloy, is also possible to Titanium alloy, copper alloy etc..That is, the first compression plate 58a strength of materials compared with cover member 48 is high.

In Fig. 3~Fig. 4 B, the first compression plate 58a along cover member 48 the rectangular extension of width direction.First Compression plate 58a is formed with the first insertion hole 60a for the first insertion part 206a insert.The bearing of first insertion hole 60a and first Hole 56a connection (referring to Fig. 4 A).First insertion part 206a is contacted with the wall surface for forming the first insertion hole 60a.

As shown in Figure 3 and Figure 6, the wall surface for forming the first insertion hole 60a is provided with the first face 62, first face 62 is logical It crosses when clamp arm 200 clamps workpiece W and bears load F2 from the first insertion part 206a (when the clamping of workpiece W).In cover member The opposite position in the side on the direction arrow A1 with the first compression plate 58a in 48 is provided with the second face 64, second face 64 Load F2 is born from the first compression plate 58a in the clamping of workpiece W.The area in the second face 64 is greater than the area in the first face 62.

As shown in Fig. 3 and Fig. 4 A, the second compression plate 58b is higher by the constituent material intensity than cover member 48 (clamp body 14) Material (the high material of allowable stress) constitute.As the constituent material of the second compression plate 58b, it can enumerate and be pressurized with first The identical material of the constituent material of plate 58a.That is, the second compression plate 58b strength of materials compared with cover member 48 is high.

The size and shape of second compression plate 58b is identical as the size of the first compression plate 58a and shape.But second by The size and shape of pressing plate 58b can also be different from the size of the first compression plate 58a and shape.

In Fig. 3~Fig. 4 B, the second insertion hole for the second insertion part 206b insert is formed in the second compression plate 58b 60b.Second insertion hole 60b is connected to (referring to Fig. 4 A) with the second support holes 56b.The second insert of second insertion part 206b and formation The wall surface of hole 60b contacts.

As shown in Figure 3 and Figure 6, the wall surface for forming the second insertion hole 60b is provided with third face 66, the third face 66 is in work Load F3 is born from the second insertion part 206b when the clamping of part W.The arrow A2 with the second compression plate 58b in cover member 48 The opposite position in side on direction is provided with fourth face 68, and the fourth face 68 is in the clamping of workpiece W from the second compression plate 58b Bear load F3.The area of fourth face 68 is greater than the area in third face 66.

The first face 62 of first compression plate 58a and the third face 66 of the second compression plate 58b form the first compression face S1, cover portion Second face 64 of part 48 and fourth face 68 form the second compression face S2.The area of second compression face S2 is (by the second face 64 and the 4th Face 68 is added obtained area) it is greater than the area (face for being added in the first face 62 with third face 66 of the first compression face S1 Product).

The the first insertion hole 60a and the second insertion hole 60b of pressure-containing parts 58 with the direction of reaction force F1 (the arrow side A2 To) and the vertical direction (direction arrow B1 and the direction arrow B2) of axis direction of rotation axis 24 on staggered positions be arranged, instead Directed force F 1 acts on clamp arm 200 in the clamping of workpiece W.

Then, the effect of the clamping device 10 constituted as described above is illustrated.

Using clamping device 10, as shown in figure 5, clamp arm 200 is installed on clamping device 10 by user Rotation axis 24.In addition, the first cover member 48a of clamping device 10 is for example installed on the fixed part master of fixation member 202 by user Body (fixed pallet).

Specifically, user is formed through the first insertion part 206a in the first hole 208a of fixed part main body and first The first support holes 56a (the first insertion hole 60a of the first compression plate 58a) of cover member 48a.In addition, user makes the second insertion section Part 206b is formed through the second support holes 56b (the second compression in the second hole 208b and the first cover member 48a of fixed part main body The second insertion hole 60b of plate 58b).The first cover member 48a is accurately positioned relative to fixed part main body as a result,.

In addition, user makes the first secure component 204a being formed through in the state of the third hole 208c of fixed part main body It is screwed togather with the first mounting hole 54a of the first cover member 48a.In addition, user is being formed through the second secure component 204b in solid Determine to screw togather with the second mounting hole 54b of the first cover member 48a in the state of the 4th hole 208d of portion's main body.As a result, by the first cover Component 48a is strongly fixed relative to fixed part main body.

Next, workpiece W is placed in the workpiece mounting portion 210 (referring to Fig. 6) being arranged in fixed part main body by user.Its Afterwards, as shown in Fig. 2, supplying compression fluid to first port 36 in the state of making second port 38 be in atmosphere opening.

Then, piston 32 is displaced in cylinder barrel 26 to 30 side of bowl cover (direction arrow A2).Also, act on the drive of piston 32 Power is transmitted to rotation axis 24 via piston rod 34, connector 18, link mechanism 20 and support rod 22, therefore rotation axis 24 is to figure 6 direction arrow R rotates.The contact portion 200a of clamp arm 200 presses workpiece W to workpiece mounting portion 210 as a result, therefore work Part W is clamped.

At this point, as shown in fig. 6, having the reaction force F1 in the direction arrow A2 to the contact portion 200a effect of clamp arm 200.It changes Yan Zhi has reaction force F1 for the effect of clamp body 14 for supporting the rotation axis 24 for being equipped with clamp arm 200.Then, First insertion part 206a is jacked up to the direction arrow A2 and to be branch with the first insertion part 206a by the first cover member 48a Point is rotated.

Therefore, from the first insertion part 206a to the load in 62 direction action arrow A1 of the first face of the first compression plate 58a F2, and from the first compression plate 58a to the load F2 in 64 direction action arrow A1 of the second face of the first cover member 48a.At this point, by Area in the second face 64 is greater than the area in the first face 62, therefore the pressure for acting on the second face 64 is smaller.

In addition, from the second insertion part 206b to the load in 66 direction action arrow A2 of third face of the second compression plate 58b F3, and from the second compression plate 58b to the load F3 in 68 direction action arrow A2 of fourth face of the first cover member 48a.At this point, by It is greater than the area in third face 66 in the area of fourth face 68, therefore the pressure for acting on fourth face 68 is smaller.In addition, reaction force F1 is equal with load F2 with the resultant force of load F3.

Even that is, in the case where making the cast member of 14 aluminum or aluminum alloy of clamp body for the purpose of lightweight, also not The first cover member 48a can be made to generate the stress of allowable stress or more and deform in the clamping of workpiece W.

The utility model can be realized effect below.

It can be realized clamping device 10 due to being constituted clamp body 14 with aluminum or aluminum alloy according to the utility model Lightweight.In addition, can with the second compression face S2 of clamp body 14 bear in the clamping of workpiece W from insertion part (first insert Enter component 206a and the second insertion part 206b) act on pressure-containing parts 58 the first compression face S1 load (load F2 and load Lotus F3).It reduces thereby, it is possible to keep the compression area of clamp body 14 bigger and generates stress, therefore be able to suppress clamp body 14 Deformation.

Pressure-containing parts 58 is configured in the wall portion of clamp body 14 by insert-molding.According to this structure, Neng Gourong It changes places pressure-containing parts 58 is fixed relative to clamp body 14.

It is formed in pressure-containing parts 58 and is inserted for insertion part (the first insertion part 206a and the second insertion part 206b) Insertion hole (the first insertion hole 60a and the second insertion hole 60b), clamp body 14 be formed with insertion hole (the first insertion hole 60a And the second insertion hole 60b) connection and in the (bearing of the first support holes 56a and second of the support holes of the outer surface of clamp body 14 opening Hole 56b).According to this structure, it can be set in the wall surface for forming insertion hole (the first insertion hole 60a and the second insertion hole 60b) Set the first compression face S1.

Insertion hole (the first insertion hole 60a and the second insertion hole 60b) along the rotation axis 24 of clamp arm 200 axis direction Extend.It according to this structure, can be effective using insertion part (the first insertion part 206a and the second insertion part 206b) Bear the reaction force F1 that clamp arm 200 is acted in the clamping of workpiece W in ground.

In pressure-containing parts 58, insertion hole (the first insertion hole 60a and the second insertion hole 60b) is in the side with reaction force F1 Multiple, clamping of the reaction force in workpiece W is set to staggered positions on the direction vertical with the axis direction of rotation axis 24 When act on clamp arm 200.According to this structure, the insertion part (insertion of the first insertion part 206a and second can be passed through Component 206b) and balance supporting fixture body 14 well.

Pressure-containing parts 58 is made of ferroalloy.According to this structure, the deformation of pressure-containing parts 58 can be effectively inhibited.

Pressure-containing parts 58 has multiple compression plates (the first compression plate 58a and the second compression plate 58b), in multiple compression plates (the first compression plate 58a and the second compression plate 58b) is respectively formed with insertion hole (the first insertion hole 60a and the second insertion hole 60b). According to this structure, folder can efficiently be increased by multiple compression plates (the first compression plate 58a and the second compression plate 58b) Specific 14 compression area.

(first variation)

Can also replace pressure-containing parts 58, clamping device 10 have involved in Fig. 7~first variation shown in Fig. 9 by Splenium part 70.As shown in Fig. 7 and Fig. 8 A, pressure-containing parts 70 includes to be configured in the wall portion of cover member 48 by insert-molding One compression plate 70a.

(allowable stress is high by the higher material of constituent material intensity than cover member 48 (clamp body 14) by compression plate 70a Material) it constitutes.The constituent material of compression plate 70a can enumerate the composition material with the first compression plate 58a and the second compression plate 58b Expect identical material.

Compression plate 70a is formed as quadrangle.The shape of compression plate 70a be located at the first mounting hole 54a, the second mounting hole 54b, The outside of first support holes 56a and the second support holes 56b (referring to Fig. 7).

In Fig. 7~Fig. 8 B, the first installation intercommunicating pore being connected to the first mounting hole 54a is formed in compression plate 70a The first insertion hole 74a that 72a, second be connected to the second mounting hole 54b install intercommunicating pore 72b, are connected to the first support holes 56a And the second insertion hole 74b being connected to the second support holes 56b.

As shown in Fig. 7 and Fig. 9, the wall surface for forming the first insertion hole 74a is provided with the first face 76, first face 76 is in work Load F2 is born from the first insertion part 206a when the clamping of part W.The wall surface for forming the second insertion hole 74b is provided with the second face 78, which bears load F3 from the second insertion part 206b in the clamping of workpiece W.

The position opposite with the side of compression plate 70a being located on the direction arrow A1 in cover member 48 is provided with third Load F2 is born from compression plate 70a in the clamping of workpiece W in face 80, the third face 80.In cover member 48 with compression plate 70a The opposite position in side being located on the direction arrow A2 be provided with fourth face 82, the fourth face 82 in the clamping of workpiece W from Compression plate 70a bears load F3.

The first face 76 of compression plate 70a and the second face 78 form the first compression face S3, the third face 80 of cover member 48 and the 82 form the second compression face S4 on four sides.Second compression face S4 (area for being added in third face 80 with fourth face 82) is greater than the The area (area for being added in the first face 76 with the second face 78) of one compression face S3.

The the first insertion hole 74a and the second insertion hole 74b of pressure-containing parts 70 with the direction of reaction force F1 (the arrow side A2 To) and the vertical direction (direction arrow B1 and the direction arrow B2) of axis direction of rotation axis 24 on staggered positions be arranged, instead Directed force F 1 is that the power of clamp arm 200 is acted in the clamping of workpiece W.

Pressure-containing parts 70 involved in first variation has a compression plate 70a, is formed in a compression plate 70a more A insertion hole (being formed with the first insertion hole 74a and the second insertion hole 74b).According to this structure, can be realized with it is above-mentioned The identical effect of pressure-containing parts 58.In addition, can be realized the reduction of the number of components of clamping device 10.

(the second variation)

Pressure-containing parts 58 can also be replaced, clamping device 10 has involved in the second variation shown in Figure 10~Figure 12 Pressure-containing parts 90.As shown in Figure 10 and Figure 11 A, pressure-containing parts 90 includes the wall portion that cover member 48 is configured at by insert-molding Interior the first endless member 90a and the second endless member 90b.

First endless member 90a is configured at position corresponding with the first support holes 56a.First endless member 90a is by than cover The higher material of constituent material intensity (the high material of allowable stress) of component 48 (clamp body 14) is constituted.First endless member The constituent material of 90a can enumerate material identical with the constituent material of the first compression plate 58a and the second compression plate 58b.

In Figure 10~Figure 11 B, the first endless member 90a is formed as circular.First endless member 90a has as the The inner hole of one insertion hole 92a.First insertion part 206a is contacted with the wall surface for forming the first insertion hole 92a.

As shown in Figure 10 and Figure 12, the wall surface for forming the first insertion hole 92a is provided with the first face 94, which exists Load F2 is born from the first insertion part 206a when the clamping of workpiece W.It is outer with the first endless member 90a in cover member 48 The opposite part in the position positioned at arrow A1 direction side in circumferential surface is provided with the second face 96, folder of second face 96 in workpiece W Load F2 is born from the first endless member 90a when tight.The area in the second face 96 is greater than the area in the first face 94.

Second endless member 90b (is allowed to answer by the higher material of constituent material intensity than cover member 48 (clamp body 14) The high material of power) it constitutes.As the constituent material of the second endless member 90b, the structure with the first endless member 90a can be enumerated At the identical material of material.

In Figure 10~Figure 11 B, the second endless member 90b is formed as circular.Second endless member 90b has as the The inner hole of two insertion hole 92b.Second insertion part 206b is contacted with the wall surface for forming the second insertion hole 92b.

As shown in Figure 10 and Figure 12, the wall surface for forming the second insertion hole 92b is provided with third face 98, which exists Load F3 is born from the second insertion part 206b when the clamping of workpiece W.It is outer with the second endless member 90b in cover member 48 The opposite part in position being located on the direction arrow A2 in circumferential surface is provided with fourth face 100, and the fourth face 100 is workpiece W's Load F3 is born from the second endless member 90b when clamping.The area of fourth face 100 is greater than the area in third face 98.

The first face 94 of first endless member 90a and the third face 98 of the second endless member 90b form the first compression face S5, Second face 96 of cover member 48 and fourth face 100 form the second compression face S6.The area of second compression face S6 is (by 96 He of the second face Fourth face 100 is added obtained area) the first face 94 (is added by the area greater than the first compression face S5 with third face 98 Area).

The the first insertion hole 92a and the second insertion hole 92b of pressure-containing parts 90 with the direction of reaction force F1 (the arrow side A2 To) and the vertical direction (direction arrow B1 and the direction arrow B2) of axis direction of rotation axis 24 on staggered positions be arranged, should Reaction force F1 is the power that clamp arm 200 is acted in the clamping of workpiece W.

Pressure-containing parts 90 involved in second variation has multiple endless members (the first endless member 90a and the second ring Shape component 90b), multiple endless members (the first endless member 90a and the second endless member 90b) are respectively provided with as insertion hole The inner hole of (the first insertion hole 92a and the second insertion hole 92b).According to this structure, it can be realized and above-mentioned pressure-containing parts 58 identical effects.

It is clear that clamping device involved in the utility model is not limited to above-mentioned embodiment, this reality is not being departed from In the range of novel purport, various structures can be used.

Claims (9)

1. a kind of clamping device clamps workpiece by the clamp arm of rotation, which is characterized in that the clamping device has:

Clamp body, the clamp body are made of aluminum or aluminum alloy；

Driving portion, the driving portion are set to the clamp body, for rotating the clamp arm；And

Pressure-containing parts, the pressure-containing parts are made of the higher material of the constituent material intensity than the clamp body, with insertion section The mode of part contact is set to the clamp body, which acts on the load based on clamping force in the clamping of the workpiece Lotus,

In the clamping of the workpiece, from the insertion part to the first compression face used load of the pressure-containing parts, and From the pressure-containing parts to the second compression face used load of the clamp body,

The area of second compression face is greater than the area of first compression face.

2. clamping device according to claim 1, which is characterized in that

The pressure-containing parts is configured in the wall portion of the clamp body by insert-molding.

3. clamping device according to claim 2, which is characterized in that

It is formed with the insertion hole for insertion part insert in the pressure-containing parts,

It is formed with and is connected to the insertion hole and in the support holes of the outer surface of clamp body opening in the clamp body.

4. clamping device according to claim 3, which is characterized in that

The insertion hole extends along the axis direction of the rotation axis of the clamp arm.

5. clamping device according to claim 4, which is characterized in that

In the pressure-containing parts, the insertion hole is vertical with the axis direction in the direction of reaction force and the rotation axis Staggered positions it is arranged multiple on direction, which is the power that the clamp arm is acted in the clamping of the workpiece.

6. clamping device according to claim 1, which is characterized in that

The pressure-containing parts is made of ferroalloy.

7. the clamping device according to any one of claim 3~5, which is characterized in that

The pressure-containing parts has multiple compression plates,

The insertion hole is respectively formed in multiple described compression plates.

8. the clamping device according to any one of claim 3~5, which is characterized in that

The pressure-containing parts has a compression plate,

Multiple insertion holes are formed in a compression plate.

9. the clamping device according to any one of claim 3~5, which is characterized in that

The pressure-containing parts has multiple endless members,

The multiple endless member is respectively provided with the inner hole as the insertion hole.