CN215036639U - Flexible tool clamp - Google Patents

Abstract

The utility model discloses a flexible tool clamp, which comprises a base, a first locating block and a second locating block which are positioned at the front and the back of the base and are opposite, a clamping block which is clamped on the base in a sliding way and is positioned between the first locating block and the second locating block, and a driving block which is movably inserted between the second locating block and the clamping block, wherein the bottom end of at least one of the first locating block and the second locating block is detachably clamped with the top end of the base through a first tooth-shaped structure, the driving block is provided with a first butt inclined plane which is butted with the second locating block and a second butt inclined plane which is butted with the clamping block, the clamping block is also telescopically connected with the second locating block through an elastic piece which is arranged in a dodging groove of the driving block in a penetrating way, the driving block can do reciprocating motion up and down relative to the base, so that the clamping block does linear motion close to or far away from the first locating block, so as to clamp or unclamp the workpiece between the first positioning block and the clamping block. The clamp has the advantages of simple structure, strong universality, stable clamping and high efficiency.

Description

Flexible tool clamp

Technical Field

The utility model relates to a frock clamp especially relates to a flexible frock clamp for clamping work piece.

Background

In the field of machining, a workpiece is often required to be clamped and fixed by means of a tool clamp so as to facilitate subsequent machining operation, wherein the vice type tool clamp can be generally matched with a machine tool, and clamping operation on the workpiece is realized by being fixed on a working machine table of the machine tool. With the continuous progress of science and technology, in order to meet the requirements of increasing machining precision and operating efficiency, the upgrading of machining equipment is more frequent, and the existing vice type tool clamp has the problems of narrow application range, low universality and long workpiece positioning time, so that the existing vice type tool clamp cannot be suitable for quickly clamping workpieces with different sizes and shapes on one hand, cannot be effectively matched with the assembly requirements of quickly updated machining equipment on the other hand, and has low efficiency. If a tool clamp with multiple dimensions is additionally arranged, the production cost is increased.

Therefore, a flexible tooling fixture with simple structure, strong versatility, stable clamping and high efficiency is needed to overcome the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, commonality are strong, the stable and flexible frock clamp of efficient of centre gripping.

In order to achieve the above object, the utility model discloses a flexible tooling fixture, which comprises a base, a first positioning block and a second positioning block which are arranged at the front and the back of the base at opposite sides at intervals, a clamping block which is slidably clamped on the base and is positioned between the first positioning block and the second positioning block, and a driving block which is movably inserted between the second positioning block and the clamping block, wherein the bottom end of at least one of the first positioning block and the second positioning block is detachably clamped with the top end of the base through a first tooth-shaped structure and a second tooth-shaped structure, the driving block is provided with a first abutting inclined plane which is abutted against the second positioning block and a second abutting inclined plane which is abutted against the clamping block, the clamping block is also connected with the second positioning block in a telescopic way through an elastic piece which is penetrated in the driving block and is avoided in a groove, the driving block can reciprocate up and down relative to the base, so that the clamping block can do linear motion close to or far away from the first positioning block, and a workpiece between the first positioning block and the clamping block can be clamped or loosened.

Preferably, the base is provided with an embedding groove arranged along the longitudinal direction of the base, the embedding groove is formed by sinking the top end surface of the base towards the bottom end surface of the base, the first positioning block and the second positioning block are further in threaded connection with the embedding groove through fasteners, and the clamping block is slidably clamped in the embedding groove.

Preferably, the utility model discloses a flexible frock clamp still includes the operating parts of arranging along vertical direction, the one end threaded connection of operating parts in the embedding groove, the other end of operating parts rotationally wears to arrange in the drive block.

Preferably, the utility model discloses a flexible frock clamp still include with the shape assorted embedded block in embedded groove, embedded block slidable ground is embedded in the embedded groove, the operating parts with the respective threaded connection of fastener is in corresponding in the screw hole of embedded block.

Preferably, the section of the embedding groove is in a cross shape, and the section of the embedding block is in a convex shape.

Preferably, the edge of the base is further provided with a graduation line corresponding to the pitch of each tooth in the second tooth-shaped structure.

Preferably, the base is further provided with at least one discharge port and at least one mounting hole, the discharge port is a through hole which is formed in the left side wall or/and the right side wall of the base and communicated with the embedding groove, and the mounting hole is a through hole which penetrates through the bottom wall of the embedding groove and the bottom end face of the base.

Preferably, the top end surface of the base is further provided with a positioning groove, and the bottom of the first positioning block or the second positioning block is convexly provided with a positioning protrusion matched with the positioning groove in shape.

Preferably, the clamping block comprises a clamping part and a positioning part, the bottom end of the clamping part is abutted to the second tooth-shaped structure, and the positioning part is inserted into the embedding groove and is provided with an arc-shaped clamping table which can be clamped with the inner wall of the embedding groove in a sliding manner.

Preferably, the tooth heights of the teeth in the second tooth-shaped structure are the same, the tooth tops of the teeth are all flat surfaces, and the clamping block slides on a bearing plane formed by the tooth tops of the second tooth-shaped structure.

Compared with the prior art, in the flexible tool clamp of the utility model, because the first locating block and the second locating block are respectively arranged at the front and the back opposite sides of the base, and the bottom end of at least one of the first locating block and the second locating block is detachably clamped with the top end of the base through the first tooth-shaped structure and the second tooth-shaped structure, one of the two locating blocks can be used as a locating reference, so that a workpiece to be clamped is quickly and accurately located and arranged in an aligned mode, the clamping efficiency is improved, and the relative distance between the other locating block and the locating block used as the locating reference can be adjusted to be matched with workpieces with different sizes, so that the adaptability of the clamp is improved; of course, the placing positions of the two positioning blocks on the base can be adjusted at the same time, and then the corresponding clamping operation is carried out by taking one of the positioning blocks as a positioning reference; in addition, the driving block can move up and down between the second positioning block and the clamping block, abutting surfaces of the driving block, the second positioning block and the clamping block are inclined surfaces, and the clamping block and the second positioning block are connected in a telescopic mode through the elastic piece penetrating in the avoidance groove of the driving block, so that the driving block can be abutted against the clamping block or can be released from abutting against the clamping block due to moving up and down, the clamping block can make linear motion close to or far away from the first positioning block on the base, and a workpiece between the first positioning block and the clamping block can be clamped or loosened. The utility model discloses a flexible frock clamp simple structure commonality is strong, the centre gripping is stable and high-efficient.

Drawings

Fig. 1 is the utility model discloses a flexible frock clamp's spatial structure sketch map.

Fig. 2 is the schematic plan structure view of the flexible work fixture of the present invention.

Fig. 3 is an exploded view of a portion of the assembly of the flexible work fixture of the present invention.

Fig. 4 is a schematic perspective view of the base according to the present invention.

Fig. 5 is a schematic perspective view of the embedding block of the present invention.

Fig. 6 is a sectional view taken along a-a direction in fig. 2.

Fig. 7 is a sectional view taken along the direction B-B in fig. 2.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

Please refer to fig. 1 to 3, the utility model discloses a flexible frock clamp 100 for the centre gripping of work piece is fixed, it includes base 10, be spaced apart and arrange in the front and back double-phase contralateral first locating piece 20 and second locating piece 30 of base 10, joint in base 10 and lie in the clamp block 40 between first locating piece 20 and the second locating piece 30 slidable, movably peg graft in second locating piece 30 and press from both sides the drive block 50 between the clamp block 40, the work piece centre gripping is fixed in by pressing from both sides in the centre gripping space that clamp block 40 and first locating piece 20 limited, the slidable of clamp block 40 sets up, not only can press from both sides tightly or loosen the work piece that lies in this centre gripping space, and make the size of this centre gripping space adjustable, thereby the adaptation carries out the clamping to the work piece of different specification sizes.

The bottom end of at least one of the first positioning block 20 and the second positioning block 30 is matched with the top end of the base 10 through the concave-convex matching of the first tooth-shaped structure 101 and the second tooth-shaped structure 102, so that the detachable clamping is realized, and the alignment is convenient and efficient. The driving block 50 has a first abutting inclined surface 51 abutting against the second positioning block 30 and a second abutting inclined surface 52 abutting against the clamp block 40, and accordingly, both the abutting surface of the second positioning block 30 abutting against the first abutting inclined surface 51 and the abutting surface of the clamp block 40 abutting against the second abutting inclined surface 52 are inclined surfaces. In addition, the clamping block 40 is also telescopically connected with the second positioning block 30 through an elastic member 60 which is inserted in the escape groove 53 of the driving block 50.

Then through operation drive block 50, when making it reciprocating motion from top to bottom relative to base 10, because second locating piece 30 fixed joint is on base 10, under the effect of the thrust of first butt inclined plane 51 with second butt inclined plane 52, press from both sides tight piece 40 and do the linear motion that is close to or keeps away from first locating piece 20 thereupon, thereby press from both sides tightly or unclamp the work piece that is located between first locating piece 20 and the tight piece 40 of clamp, at this in-process, press from both sides tight piece 40 and not only can realize flexible removal through elastic component 60, thereby protect the work piece, and still automatic re-setting under the effect of elastic force, it is more convenient to use. The driving block 50 may move linearly up and down with respect to the base 10, or may move diagonally, and the clamp block 40 always moves linearly along the top end surface of the base 10.

Referring to fig. 1 to 4, specifically, the base 10 is a bar-shaped whole, and the second tooth-shaped structures 102 disposed at the top end of the base 10 are arranged along the longitudinal direction of the base 10, so as to form a wide positioning range on the base 10, so that the first positioning block 20 or/and the second positioning block 30 can be fast, conveniently and accurately clamped on the base 10 by the concave-convex matching of the first tooth-shaped structure 101 and the second tooth-shaped structure 102. Preferably, the heights of the teeth in the second tooth structure 102 are the same, and the tops 1021 of the teeth are flat, so that the clamping block 40 slides on the bearing plane formed by the tops 1021 of the second tooth structure 102, and the movement is smoother and smoother. Correspondingly, the tooth top 1011 of each tooth in the first tooth profile 101 is also a plane. Further, the edge of the base 10 is provided with a graduation mark 1022 corresponding to the pitch of each tooth in the second tooth-shaped structure 102, so that the alignment is more efficiently realized by the number marked on the graduation mark 1022. For convenience of use, the left and right opposite sides of the second tooth-shaped structure 102 may be provided with a graduation line 1022, and directions of numbers marked on the graduation lines 1022 on the two sides may be opposite, so that observation and identification from different directions of the base 10 are facilitated, and use is more convenient.

Referring to fig. 1, specifically, the base 10 is further provided with an embedding groove 11 disposed along a longitudinal direction thereof, the embedding groove 11 is formed by a top end surface of the base 10 being recessed toward a bottom end surface of the base 10, the second tooth structures 102 are respectively disposed at top ends of left and right side walls of the base 10, and the first positioning block 20 or/and the second positioning block 30 are/is oppositely clamped on the second tooth structures 102 at two sides through the first tooth structure 101, and then are in threaded connection with the embedding groove 11 through the fastening member 103, so as to be firmly and conveniently fixed on the base 10. The clamping block 40 is slidably engaged in the embedding groove 11, so as to slide on the bearing surface formed by the tooth tops 1021 of the second tooth structure 102, and not to be separated from the bearing surface during the moving process. The embedding groove 11 is convenient for assembling the first positioning block 20, the second positioning block 30, the clamping block 40 and the base 10, and can reduce the volume and weight of the whole jig and effectively reduce the cost. Preferably, the embedding slot 11 is further disposed to penetrate through the front and rear sidewalls of the base 10, so that the clamping block 40 is slidably embedded in the embedding slot 11 from the opening of the front or rear sidewall of the base 10. The fastening member 103 is embodied as a screw or a bolt, and is easy to assemble and disassemble.

With reference to fig. 1 and 3, the clamping block 40 includes a clamping portion 41 and a positioning portion 42, a bottom end of the clamping portion 41 abuts against the second tooth-shaped structure 102, and the positioning portion 42 is inserted into the embedding slot 11 and has an arc-shaped clamping table 421 slidably clamped with an inner wall of the embedding slot 11. The arc-shaped clamping table 421 not only enables the clamping block 40 to be slidably clamped in the embedding groove 11, but also can effectively reduce friction, so that the clamping block 40 can slide more smoothly. In order to facilitate the installation of the elastic member 60, the clamping block 40 is further provided with a receiving groove 43, and a positioning column 44 for fixing the elastic member 60 is disposed in the receiving groove 43. Correspondingly, the second positioning block 30 is also provided with an accommodating groove 31 and a positioning post 32 for mounting the elastic element 60. Specifically, the number of the elastic members 60 is two, and the two elastic members 60 are symmetrically arranged between the second positioning block 30 and the clamping block 40, so that the movement of the clamping block 40 is more stable. Accordingly, the number of the avoidance grooves 53 on the driving block 50 corresponds to two, and the avoidance grooves 53 are formed by recessing the bottom end surface of the driving block 50 toward the top end surface of the driving block 50, and are arranged along the longitudinal direction of the driving block 50 so as to penetrate through the first abutting inclined surface 51 and the second abutting inclined surface 52. The up and down movement of the driving block 50 does not affect the expansion and contraction movement of the elastic member 60 inserted in the escape groove 53 in the front and rear directions. Specifically, the elastic member 60 is a telescopic spring.

With reference to fig. 1 and 4, specifically, the base 10 is further provided with at least one discharge port 12, the discharge port 12 is a through hole which is formed in the left side wall or/and the right side wall of the base 10 and is communicated with the embedding slot 11, and is used for guiding out iron chips, waste materials, dust and the like falling into the embedding slot 11 during the processing of the workpiece from the embedding slot 11, so as to ensure the smoothness of movement of the clamping block 40 and the firmness of clamping. Preferably, the discharge hole 12 is obliquely arranged on the left side wall or/and the right side wall, so that the discharge is smoother and better in discharge effect. In addition, the base 10 is further provided with at least one mounting hole 13, and the mounting hole 13 is a through hole penetrating through the bottom wall 111 of the embedding slot 11 and the bottom end surface of the base 10, and is used for being matched with a fastener 104 (see fig. 7) to fix the base 10 on a working machine table of a machine tool. The fastener 104 may be specifically selected from a cylindrical pin.

Specifically, the top end surface of the base 10 is further provided with a positioning groove 14, and the bottom of the first positioning block 20 or the second positioning block 30 is convexly provided with a positioning protrusion 21 matched with the positioning groove 14 in shape, so that one of the first positioning block 20 and the second positioning block 30 can be quickly and accurately fixed on the base 10 by the clamping fit of the positioning protrusion 21 and the positioning groove 14, and the other one of the first positioning block 20 and the second positioning block 30 can be efficiently positioned by using the positioning block as a positioning reference. It should be noted that the bottom end of the first positioning block 20 or the second positioning block 30 having the positioning protrusion 21 can be simplified into a plane, and the first tooth-shaped structure 101 does not need to be processed at the bottom end, but directly abuts against the bearing plane formed by the tooth tops 1021 of the teeth in the second tooth-shaped structure 102, so that after the positioning protrusion 21 is clamped and positioned with the positioning groove 14, the fastening member 103 is screwed with the embedding groove 11, thereby simplifying the structure and optimizing the manufacturing process.

Referring to fig. 1, 3, 6 and 7, the flexible tooling fixture 100 of the present invention further includes an operating member 70 disposed along the vertical direction, one end of the operating member 70 is screwed into the embedding slot 11, and the other end of the operating member 70 is rotatably inserted into the countersunk hole 54 of the driving block 50. The operating member 70 is engaged with the thread of the embedding slot 11 to drive the driving block 50 to move linearly up and down relative to the base 10, so as to drive the clamping block 40 to slide back and forth on the base 10, thereby completing the corresponding clamping operation. Specifically, the operating element 70 is a screw, and a threaded hole for screwing the operating element 70 is directly formed in the bottom wall 111 of the embedding groove 11. Of course, the operation member 70 may also be provided as a linear actuator connected to the outer end of the driving block 50, so that the driving block 50 may also be driven to move up and down relative to the base 10.

Referring to fig. 4 to 7, specifically, in the preferred embodiment of the present application, an embedding block 80 matching with the shape of the embedding slot 11 may be further added, the embedding block 80 is slidably embedded in the embedding slot 11, and the operating element 70 is screwed into the threaded hole 81 of the embedding block 80, so that it is not necessary to provide a plurality of threaded holes for the operating element 70 to connect on the bottom wall 111 of the embedding slot 11, and only one embedding block 80 slides in the embedding slot 11, and the clamping operation of workpieces with different specifications and sizes can be adapted, thereby further optimizing the structure and improving the adaptability of the clamp. Further, the first positioning block 20 and the second positioning block 30 are conveniently and stably fixed on the base 10 by the threaded connection of the correspondingly arranged fasteners 103 and the embedding blocks 80, and the quick alignment adjustment and assembly are realized by the sliding of the embedding blocks 80 in the embedding grooves 11.

Specifically, the cross-sectional shape of the embedding slot 11 is cross-shaped, the cross-sectional shape of the embedding block 80 is convex, and the embedding blocks 80 are arranged in one-to-one correspondence with the first positioning block 20, the second positioning block 30 and the driving block 50. The embedding block 80 can slide into the embedding groove 11 from the opening of the front and rear side walls of the base 10, and can be slidably clamped in the embedding groove 11 through the clamping portion 82 at the lower side end, and the connecting portion 83 at the upper side end of the embedding block 80 is located at the notch at the top side of the embedding groove 11, so as to facilitate the corresponding connection of the first positioning block 20, the second positioning block 30 and the driving block 50. The bottom end face of the embedding block 80 and the bottom wall of the embedding groove 11 are arranged with a certain gap, so that the assembling and disassembling operation of the embedding block 80 in the embedding groove 11 is more convenient.

The working principle of the flexible tooling fixture 100 of the present invention is described below with reference to fig. 1 to 7:

during assembly, in the preferred embodiment of the present application, the first positioning block 20 is used as a positioning reference, first, the second positioning block 30 and the clamping block 40 are connected into a whole through the elastic member 60, and then the three embedding blocks 80 are sequentially pushed into the embedding slots 11 of the base 10; then, the first positioning block 20 is positioned at the opposite front side end of the base 10 through the clamping alignment of the positioning protrusion 21 at the bottom end thereof and the positioning groove 14, and then the first positioning block 20 is fastened on the corresponding embedding block 80 through the fastener 103; then, the second positioning block 30 and the clamping block 40 which are connected into a whole slide towards the direction of the first positioning block 20 at the opposite rear side end of the base 10 by taking the first positioning block 20 as a placement reference, so that the clamping block 40 slides into the embedding groove 11, and according to the specification and size of an actual workpiece, the second positioning block 30 is clamped on the second tooth-shaped structure 102 of the base 10 through the first tooth-shaped structure 101 at the bottom end of the second positioning block, and the second positioning block 30 is fastened on the corresponding embedding block 80 through the fastener 103; finally, the driving element 50 is inserted between the second positioning block 30 and the clamping block 40 from top to bottom, and the operating element 70 penetrating the driving element 50 is connected to the corresponding embedding block 80 in a threaded manner;

when the clamping device is used, the operating piece 70 is rotated clockwise to drive the driving block 50 to move downwards so as to push against the clamping block 40, and the clamping block 40 moves linearly along the direction close to the first positioning block 20 to clamp a workpiece; the operating member 70 is rotated counterclockwise, the driving block 50 moves upward, and the clamping block 40 is linearly moved in a direction away from the first positioning block 20 by the restoring force of the elastic member 60, thereby releasing the workpiece.

Compared with the prior art, the utility model discloses an in the flexible frock clamp 100, first locating piece 20 and second locating piece 30 divide and locate the double-phase offside around base 10, and the bottom of at least one of first locating piece 20 and second locating piece 30 and the top of base 10 are through first profile of tooth structure 101 and the detachably joint of second profile of tooth structure 102, thereby both accessible first locating piece 20 and second locating piece 30 one is as the location benchmark, so that treat the quick and accurate location of counterpoint of the work piece of clamping and settle, thereby the centre gripping efficiency that improves, and also can be through adjusting the relative distance between another one in first locating piece 20 and second locating piece 30 and one as the location benchmark, in order to match with the work piece of different size specifications, thereby improve the adaptability of this anchor clamps 100; of course, the placing positions of the first positioning block 20 and the second positioning block 30 on the base 10 may be adjusted at the same time, and then the first positioning block 20 or the second positioning block 30 is used as a positioning reference, so as to further improve the adaptability of the fixture; on the other hand, since the driving block 50 can move up and down between the second positioning block 30 and the clamping block 40, and abutting surfaces of the driving block 50, the second positioning block 30 and the clamping block 40 are inclined surfaces, and the clamping block 40 and the second positioning block 30 are connected telescopically by the elastic member 60 penetrating in the escape groove 51 of the driving block 50, so that the driving block 50 can push the clamping block 40 or release the pushing of the clamping block 40 by moving up and down, so that the clamping block 40 makes a linear motion approaching or departing from the first positioning block 20 on the base 10, and makes a flexible motion, thereby clamping or releasing a workpiece between the first positioning block 20 and the clamping block 40. The utility model discloses a flexible frock clamp 100 simple structure, commonality are strong, the centre gripping is stable and high-efficient.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims (10)

1. A flexible tool clamp is characterized by comprising a base, a first positioning block and a second positioning block which are arranged on the front side and the rear side of the base at intervals, a clamping block which is clamped on the base in a sliding manner and is positioned between the first positioning block and the second positioning block, and a driving block which is movably inserted between the second positioning block and the clamping block, wherein the bottom end of at least one of the first positioning block and the second positioning block is detachably clamped with the top end of the base through a first tooth-shaped structure and a second tooth-shaped structure, the driving block is provided with a first abutting inclined surface which is abutted against the second positioning block and a second abutting inclined surface which is abutted against the clamping block, the clamping block is also telescopically connected with the second positioning block through an elastic piece which is arranged in an avoiding groove of the driving block in a penetrating manner, and the driving block can reciprocate up and down relative to the base, so that the clamping block moves linearly close to or far away from the first positioning block to clamp or unclamp the workpiece between the first positioning block and the clamping block.

2. The flexible tooling fixture of claim 1, wherein the base is provided with an embedding groove arranged along a longitudinal direction of the base, the embedding groove is formed by recessing a top end surface of the base towards a bottom end surface of the base, the first positioning block and the second positioning block are further in threaded connection with the embedding groove through fasteners, and the clamping block is slidably clamped in the embedding groove.

3. The flexible tooling fixture of claim 2 further comprising an operating member disposed in a vertical direction, wherein one end of the operating member is threaded into the embedding slot and the other end of the operating member is rotatably disposed through the drive block.

4. The flexible tooling fixture of claim 3 further comprising an insert block matching the shape of the insert slot, the insert block being slidably inserted into the insert slot, the operating member and the fastener each being threadably engaged in a corresponding threaded bore of the insert block.

5. The flexible tooling fixture of claim 4 wherein the cross-sectional shape of the insert slot is cross-shaped and the cross-sectional shape of the insert block is convex.

6. The flexible tooling fixture of claim 2 wherein the edge of the base is further provided with graduations corresponding to the pitch of each tooth of the second tooth form.

7. The flexible tooling fixture of claim 2, wherein the base is further provided with at least one discharge port and at least one mounting hole, the discharge port is a through hole which is arranged on the left side wall or/and the right side wall of the base and is communicated with the embedding groove, and the mounting hole is a through hole which penetrates through the bottom wall of the embedding groove and the bottom end face of the base.

8. The flexible tooling fixture of claim 2, wherein a positioning groove is further formed in the top end face of the base, and a positioning protrusion matched with the positioning groove in shape is convexly formed at the bottom of the first positioning block or the second positioning block.

9. The flexible tooling fixture of claim 2, wherein the clamping block comprises a clamping portion and a positioning portion, the bottom end of the clamping portion abuts against the second toothed structure, and the positioning portion is inserted into the embedding groove and has an arc-shaped clamping table slidably clamped with the inner wall of the embedding groove.

10. The flexible tooling fixture of claim 1 or 9 wherein the teeth of the second tooth form have the same height and the tips of the teeth are flat, the clamping block sliding on a bearing flat formed by the tips of the teeth of the second tooth form.

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