CN215394816U - Clamping device - Google Patents

Abstract

The present invention relates to a clamping device, comprising: a fixing seat, which comprises a sliding groove and at least one fastening part, wherein each fastening part comprises an accommodating groove, a screw hole and a through hole; a clamping block, which is provided with a sliding block arranged in the sliding groove in a sliding way, and the sliding block is provided with a side surface; the positioning assembly comprises a screw locking piece, a pressing piece and at least one elastic piece, the screw locking piece is arranged in the screw hole in a threaded mode, the pressing piece is movably arranged in the accommodating groove and comprises an expanding section and a narrow section, the expanding section and the narrow section are arranged along a first direction, the narrow section penetrates through the through hole and extends into the sliding groove, the screw locking piece is adjusted to move towards the first direction to press against the pressing piece to drive the narrow section to move relative to the through hole and press against the side face, and at least one elastic piece is elastically pressed between the pressing piece and an inner wall of the accommodating groove.

Description

Clamping device

Technical Field

The present invention relates to a clamping device.

Background

A general clamping apparatus is used to clamp and position a workpiece to perform a machining operation on the workpiece. A clamping apparatus of the prior art includes two fixed seats, and clamping plates are respectively mounted on the two fixed seats, so that a workpiece can be clamped between the two clamping plates.

In the prior art, the screw is used to lock one of the clamping plates on the two fixing seats from the opposite side of the two clamping plates, but the space between the two fixing seats is small, so that when the clamping plate is disassembled, the movable space of the screwdriver tool is limited and is not easy to disassemble.

Therefore, there is a need for a novel and improved clamping device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a clamping device, which can rapidly fix and release a clamping block on a fixing base.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the present invention provides a jig device, including: a fixing seat, which comprises a sliding groove and at least one fastening part, wherein each fastening part comprises an accommodating groove, a screw hole and a through hole, and the fixing seat is provided with a first end face; a clamping block, which is provided with a sliding block arranged in the sliding groove in a sliding way, wherein the sliding block is provided with a side surface, and the clamping block is provided with a second end surface facing the first end surface; at least one positioning assembly, each positioning assembly comprising a screw locking piece, a pressing piece and at least one elastic piece, wherein the screw locking piece is screwed in the screw hole, the pressing piece is movably arranged in the accommodating groove, the pressing piece comprises an expanding section and a narrow section, the expanding section and the narrow section are arranged along a first direction, the narrow section passes through the through hole and extends into the sliding groove, the screw locking piece is adjusted to move towards the first direction to press against the pressing piece to drive the narrow section to move relative to the through hole and press against the side face, and at least one elastic piece is elastically pressed between the pressing piece and an inner wall of the accommodating groove; the sliding groove is opened towards an opening direction, the opening direction is transverse to the first direction, and the first end face and the second end face are mutually abutted along the opening direction.

The at least one elastic piece is sleeved on the narrow diameter section and is propped between the diameter expanding section and one inner wall of the accommodating groove.

The narrow-diameter section is in a column shape, a first axial line is defined by the narrow-diameter section, the screw locking piece is a screw rod, a second axial line is defined by the screw rod, and the first axial line and the second axial line are not coaxially arranged.

The diameter expanding section further comprises a base part protruding in the direction transverse to the first axial line, a through hole is formed in the base part, the screw locking piece penetrates through the through hole and is screwed in the screw hole, the number of the at least one elastic piece is two, one elastic piece is sleeved on the narrow-diameter section and elastically abuts against the diameter expanding section, the other elastic piece is elastically abutted between the base part and the accommodating groove and sleeved on the screw locking piece, and the base part, the diameter expanding section and the narrow-diameter section are integrally formed.

The diameter expanding section further comprises a base part protruding in the direction transverse to the first axial line, a through hole is formed in the base part, the screw locking piece penetrates through the through hole and is screwed in the screw hole, the at least one elastic piece is elastically abutted between the base part and the accommodating groove, the at least one elastic piece is sleeved on the screw locking piece, and the base part, the diameter expanding section and the narrow diameter section are integrally formed; the through hole is opened towards an axial direction, and the extension dimension of the base towards the axial direction is greater than 1/3 times the length dimension of the fixed seat towards the axial direction.

The diameter expanding section further comprises a base part protruding in the direction transverse to the first axial line, a through hole is formed in the base part, the screw locking piece penetrates through the through hole and is screwed in the screw hole, the at least one elastic piece is elastically abutted between the base part and the accommodating groove, the at least one elastic piece is sleeved on the screw locking piece, the base part, the diameter expanding section and the narrow diameter section are integrally formed, and the outer peripheral surfaces of the narrow diameter section and the diameter expanding section are flush with each other when viewed in the extending direction of the first axial line.

The pressing piece further comprises a base portion, a through hole is formed in the base portion, the screw locking piece penetrates through the through hole and is arranged in the screw hole in a threaded mode, a supporting surface which extends in the radial direction and corresponds to the diameter expanding section is further arranged on the base portion outside the through hole, the number of the at least one elastic piece is two, one elastic piece is sleeved on the narrow-diameter section and elastically supports against the diameter expanding section, and the other elastic piece elastically supports against the space between the base portion and the accommodating groove.

The first direction passes through the screw locking piece, the pressing piece and the through hole, and the first direction extends vertically.

The sliding groove comprises an inclined side wall and a straight side wall, the inclined side wall and the straight side wall are respectively connected to two opposite sides of a bottom surface of the sliding groove, the straight side wall is perpendicular to the bottom surface, the sliding block is a dovetail block, the side surface faces the straight side wall, the side surface is an inclined surface, the narrow-diameter section is provided with an inclined abutting surface, the inclined abutting surface is abutted against the inclined surface, and the inclined abutting surface is an inclined tooth surface.

The accommodating groove is opened towards the first direction; the sliding groove comprises a bottom surface facing the opening direction, and a gap is formed between the narrow-diameter section and the bottom surface; the sliding groove comprises an inclined side wall and a straight side wall, the inclined side wall and the straight side wall are respectively connected to two opposite sides of the bottom surface, the straight side wall is perpendicular to the bottom surface, the sliding block is a dovetail block, the side surface corresponds to the straight side wall, and a corner of the dovetail block is not contacted with the intersection of the straight side wall and the bottom surface; the side surface is an inclined surface, the narrow diameter section is provided with an inclined abutting surface which is forced to abut against the inclined surface, a gap is formed between the sliding block and the bottom surface, and the size of the inclined abutting surface in the opening direction is smaller than that of the inclined surface; the number of the at least one fastening part is plural, and the number of the at least one positioning component is plural; the accommodating groove comprises a deep groove and a shallow groove, the deep groove and the shallow groove are arranged towards the opening direction, the through hole is arranged on the shallow groove, the screw hole is arranged on the deep groove, the diameter expanding section and the narrow diameter section are accommodated in the shallow groove, and the narrow diameter section extends out of the base part towards the direction with the side surface; the inclined butting surface extends towards the direction of the bottom surface and exceeds the inclined surface; the through hole is a stepped hole and comprises a large-diameter hole, a small-diameter hole and a shoulder part, the screw locking piece is a countersunk head screw which comprises a head section and a body section, the head section is arranged in the large-diameter hole and does not protrude out of the large-diameter hole, the head section is abutted against the shoulder part, the body section penetrates through the small-diameter hole, and the head section is abutted against the wall of the large-diameter hole in the radial direction; the sliding block is provided with a concave part which is concave towards the first direction; each fastening part is additionally provided with a partition wall which is arranged between each narrow-diameter section and the clamping block.

The utility model has the beneficial effects that: the clamping device of the utility model provides rapid disassembly and assembly of the clamping block and better positioning property through the at least one positioning component.

Drawings

Fig. 1 is a perspective view of a first preferred embodiment of the present invention.

Fig. 2 is an exploded view of a first preferred embodiment of the present invention.

Fig. 3 is another exploded view of the first preferred embodiment of the present invention.

Fig. 4 is a cross-sectional view taken along line a-a of fig. 1.

FIG. 5 is a state diagram of the first preferred embodiment of the present invention.

Fig. 6 is a cross-sectional view taken along line B-B of fig. 1.

FIG. 7 is another usage status diagram of the first preferred embodiment of the present invention.

Fig. 8 is an exploded view of a second preferred embodiment of the present invention.

FIG. 9 is a cross-sectional view of a second preferred embodiment of the present invention.

Fig. 10 is an exploded view of a third preferred embodiment of the present invention.

FIG. 11 is a cross-sectional view of a third preferred embodiment of the present invention.

Fig. 12 is an exploded view of a fourth preferred embodiment of the present invention.

FIG. 13 is a cross-sectional view of a fourth preferred embodiment of the present invention.

Reference numerals: 1: a clamp device; 10. 10': a fixed seat; 11: a sliding groove; 12: a bottom surface; 13: a gap; 14: a sloped sidewall; 15: a straight side wall; 16: a gap; 17: a first end face; 20: a clamping block; 21: a slider; 22: a side surface; 23: a corner; 24: a recessed portion; 25: a second end face; 30: a positioning assembly; 31. 31': a screw lock member; 311: a head section; 312: a body section; 313: a polygonal hole; 32. 32', 32 a: a compression member; 321: a diameter expanding section; 322: a narrow diameter section; 323. 323': an inclined butting surface; 33. 37: an elastic member; 34. 34', 34 a: a base; 35: perforating; 351: a large-diameter hole; 352: a small-diameter hole; 353: a shoulder portion; 354: a hole wall; 36: pressing the dough; 40: a fastening section; 41: a containing groove; 411: an inner wall; 412: deep grooves; 413: shallow-groove; 42: a screw hole; 43: through holes are formed; 44: a partition wall; l1: a first direction; l2: an open direction; a1: a first axis; a2: second axis a 3: axial direction; 2: a base; h1: an extension dimension; h2: the length dimension.

Detailed Description

The following description is given by way of example only, and is not intended to limit the scope of the utility model.

Referring to fig. 1 to 7, which illustrate a first preferred embodiment of the present invention, the present invention provides a clamping apparatus 1, which includes a fixing base 10, a clamping block 20 and at least one positioning assembly 30. The clamping device 1 is provided on a base 2.

The fixing base 10 includes a sliding slot 11 and at least one fastening portion 40, each fastening portion 40 includes an accommodation slot 41, a screw hole 42 and a through hole 43, the fixing base 10 has a first end surface 17; the clamping block 20 is provided with a sliding block 21 slidably arranged in the sliding groove 11, the sliding block 21 is provided with a side surface 22, the clamping block 20 is for example a soft claw, the clamping block 20 is provided with a second end surface 25 facing the first end surface 17; each positioning assembly 30 includes a screw locking member 31, a pressing member 32 and at least one elastic member, the screw locking member 31 is screwed in the screw hole 42, the pressing member 32 is movably disposed in the accommodating groove 41, the pressing member 32 includes an expanding section 321 and a narrow section 322, the expanding section 321 and the narrow section 322 are disposed along a first direction L1, the narrow section 322 passes through the through hole 43 and extends into the sliding groove 11, wherein the screw locking member 31 is adjusted to move towards the first direction L1 to press against the pressing member 32 to drive the narrow section 322 to move relative to the through hole 43 and press against the side surface 22, and at least one elastic member is elastically pressed between the pressing member 32 and an inner wall 411 of the accommodating groove 41, thereby providing a quick assembly and disassembly of the clamping block 20 and a good positioning performance. Moreover, the narrow section 322 has a large downward pressure on the sliding block 21, and the narrow section 322 can extend into the receiving groove 41 to a deep depth, so that the narrow section 322 can be kept pressed to press the sliding block 21, and the positioning effect is good. Preferably, the sliding groove 11 is opened in an opening direction L2, the opening direction L2 is transverse to the first direction L1, and the first end surface 17 and the second end surface 25 abut against each other along the opening direction L2, so as to improve the bonding strength and the bonding stability between the fixing base 10 and the clamping block 20.

In the present embodiment, the number of the at least one fastening portion 40 is plural, and the number of the at least one positioning element 30 is plural, so as to enhance the positioning effect.

Preferably, the number of the at least one elastic member is two, and the two elastic members include an elastic member 33 and an elastic member 37.

Preferably, the elastic element 33 is sleeved on the narrow diameter section 322 and abuts against the expanding section 321, in this embodiment, the elastic element 33 is a torsion spring, so that the elastic element 33 can be stably compressed and reset without easily shaking or deflecting, and the pressing element 32 can be stably pushed and displaced.

The sliding block 21 is provided with a concave portion 24 concaved toward the first direction L1, so that a gap is formed between the concave portion 24 and the sliding groove 11 to reduce the contact area between the sliding block 21 and the sliding groove 11 for smooth displacement.

The narrow section 322 is in a column shape, the narrow section 322 defines a first axis a1, the screw 31 is a screw defining a second axis a2, and the first axis a1 and the second axis a2 are not coaxially arranged, so as to increase the urging force of the narrow section 322 acting on the sliding block 21. The screw member 31 is provided with a polygonal hole 313 for a tool to assemble, so that the screw member 31 can be stably assembled and disassembled.

The pressing member 32 further includes a base portion 34, the base portion 34 is provided with a through hole 35, the screw locking member 31 is inserted through the through hole 35 and is screwed in the screw hole 42, the base portion 34 is further provided with a pressing surface 36 radially extending corresponding to the expanding section 321 outside the through hole 35, the elastic member 37 is elastically pressed between the base portion 34 and the accommodating groove 41, the elastic member 37 is sleeved on the screw locking member 31 to provide an elastic restoring force to push the screw locking member 31, wherein the screw locking member 31 drives the pressing surface 36 of the base portion 34 to press against the expanding section 321 to drive the narrow section 322 to move and press against the side surface 22, so that the base portion 34 drives the expanding section 321 and the narrow section 322 to move. The through hole 35 is a step hole, the through hole 35 includes a large diameter hole 351, a small diameter hole 352 and a shoulder 353, the screw locking member 31 is a countersunk head screw, the countersunk head screw includes a head section 311 and a body section 312, the head section 311 is disposed in the large diameter hole 351 and does not protrude from the large diameter hole 351, the head section 311 abuts against the shoulder 353, the body section 312 penetrates through the small diameter hole 352, and the head section 311 radially abuts against a hole wall 354 of the large diameter hole 351, so that the screw locking member 31 can be stably moved and stably drives the base 34 to move.

The accommodating groove 41 is open towards the first direction L1; the sliding groove 11 is opened in an opening direction L2, the opening direction L2 is transverse to the first direction L1, the sliding groove 11 includes a bottom surface 12, the bottom surface 12 faces the opening direction L2, and a gap 13 is formed between the narrow section 322 and the bottom surface 12, so that the narrow section 322 can move smoothly without interference of the bottom surface 12.

In detail, the sliding slot 11 includes a slant sidewall 14 and a straight sidewall 15, the slant sidewall 14 and the straight sidewall 15 are respectively connected to two opposite sides of the bottom surface 12, the straight sidewall 15 is perpendicular to the bottom surface 12, the sliding block 21 is a dovetail block, the side surface 22 corresponds to the straight sidewall 15, a corner 23 of the dovetail block does not contact the intersection of the straight sidewall 15 and the bottom surface 12, so that the sliding block 21 can be rapidly removed from the sliding slot 11 toward the opening direction L2; specifically, the slide block 21 can evade the straight sidewall 15 and the portion that is inclined to escape can be entirely escaped, and can be engaged with the slide groove 11. Preferably, the side surface 22 is an inclined surface, the narrow section 322 is provided with an inclined surface 323, the inclined surface 323 is forced to abut against the inclined surface, a gap 16 is formed between the sliding block 21 and the bottom surface 12, and the size of the inclined surface 323 in the opening direction L2 is smaller than that of the inclined surface. The inclined surface 323 extends toward the bottom surface 12 and exceeds the inclined surface, so that when the inclined surface 33 is forced toward the inclined surface, the sliding block 21 can be moved toward the bottom surface 12 to tightly couple the clamping block 20 and the fixing base 10.

The receiving groove 41 includes a deep groove 412 and a shallow groove 413, the deep groove 412 and the shallow groove 413 are disposed toward the opening direction L2, the through hole 43 is disposed on the shallow groove 413, the screw hole 42 is disposed on the deep groove 412, the expanding section 321 and the narrow section 322 are received in the shallow groove 413, the narrow section 322 extends beyond the base 34 toward the side surface 22, so as to provide a better tightening force to the sliding block 21.

Each fastening portion 40 is further provided with a partition wall 44, and the partition wall 44 is disposed between each narrow section 322 and the clamping block 20, so that the clamping block 20 and the narrow section 322 will not interfere with each other and wear.

Referring to fig. 8 to 9, a second preferred embodiment of the present invention is shown, which is different from the first preferred embodiment in that the expanding section 321 of the pressing member 32 'further includes a base portion 34' protruding in a direction transverse to the first axis a1, the base portion 34 ', the expanding section 321 and the narrow section 322 are integrally formed, the base portion 34' is provided with the through hole 35, and the screw member 31 is threaded through the through hole 35 and is threaded into the screw hole 42, so as to simplify the process flow and reduce the manufacturing cost; and the screw 31 may directly apply force to the narrow diameter section 322.

Referring to fig. 10 to 11, a third preferred embodiment of the present invention is shown, which is different from the first preferred embodiment in that the screw locking piece 31 'is a screw cap having an external thread, the first direction L1 passes through the screw locking piece 31', the pressing piece 32 and the through hole 43, and the first direction L1 is vertically extended, thereby reducing the overall size. In the present embodiment, the screw locking member 31' directly presses against the expanding section 321, and further, the present embodiment only has the elastic member 33 sleeved on the narrow section 322 and has no base portion.

Please refer to fig. 12 and 13, which show a fourth preferred embodiment of the present invention, which is different from the second preferred embodiment in that it only has the elastic member 37 without the elastic member 33 (as shown in fig. 9) of the second preferred embodiment; the pressing member 32a includes the base 34a, the through hole 35 is open in an axial direction A3, and an extension H1 of the base 34a in the axial direction A3 is more than 1/3 times a length H2 of the fixing seat 10 'in the axial direction A3, so that the pressing member 32a is not easily subjected to an external force to swing and rock relative to the fixing seat 10' to provide stable positioning. Furthermore, the narrow diameter section 322 is non-cylindrical, and the outer peripheral surfaces of the narrow diameter section 322 and the diameter-expanding section 321 are flush with each other as viewed from the extending direction of the first axis a1, so that the clamping block 20 is pressed with high strength, and has high positioning strength. Preferably, the inclined surface 323' is an inclined tooth surface to enhance the contact area and enhance the positioning effect.

The clamping device 1 of the present invention provides the clamping block 20 with quick assembly and disassembly and better positioning performance through the at least one positioning assembly 30.

Claims (10)

1. A clamp device, comprising:

a fixing seat, including a sliding groove and at least one fastening portion, each fastening portion including a containing groove, a screw hole and a through hole, the fixing seat having a first end face;

a clamping block, which is provided with a sliding block arranged in the sliding groove in a sliding way, wherein the sliding block is provided with a side surface, and the clamping block is provided with a second end surface facing the first end surface;

at least one positioning assembly, each positioning assembly comprises a screw locking piece, a pressing piece and at least one elastic piece, the screw locking piece is screwed in the screw hole, the pressing piece is movably arranged in the accommodating groove, the pressing piece comprises an expanding section and a narrow section, the expanding section and the narrow section are arranged along a first direction, the narrow section penetrates through the through hole and extends into the sliding groove, the screw locking piece is adjusted to move towards the first direction and press against the pressing piece to drive the narrow section to move relative to the through hole and press against the side face, and at least one elastic piece is elastically pressed between the pressing piece and an inner wall of the accommodating groove;

the sliding groove is opened towards an opening direction, the opening direction is transverse to the first direction, and the first end face and the second end face are mutually abutted along the opening direction.

2. The clamping device as claimed in claim 1, wherein said at least one resilient member is sleeved on said narrow diameter section and is biased against said enlarged diameter section and an inner wall of said receiving groove.

3. The fixture apparatus of claim 1, wherein the narrow diameter section is cylindrical, the narrow diameter section defining a first axis, the threaded locking member being a threaded rod defining a second axis, the first axis and the second axis being non-coaxially disposed.

4. The clamping apparatus as claimed in claim 3, wherein the expanding section further includes a base portion protruding transversely to the first axial line, the base portion has a through hole, the screw member is inserted through the through hole and screwed into the screw hole, the plurality of the at least one elastic member is two, one of the elastic members is sleeved on the narrow diameter section and elastically abuts against the expanding section, the other elastic member is elastically abutted between the base portion and the receiving groove and sleeved on the screw member, and the base portion, the expanding section and the narrow diameter section are integrally formed.

5. The clamping apparatus as claimed in claim 3, wherein the expanding section further comprises a base portion protruding in a direction transverse to the first axis, the base portion has a through hole, the locking member is inserted through the through hole and is screwed into the screw hole, the at least one elastic member is elastically pressed between the base portion and the receiving groove, the at least one elastic member is sleeved on the locking member, and the base portion, the expanding section and the narrow section are integrally formed; the through hole is opened towards an axial direction, and the extension dimension of the base towards the axial direction is greater than 1/3 times the length dimension of the fixed seat towards the axial direction.

6. The clamping apparatus as claimed in claim 3, wherein the expanding section further includes a base portion protruding in a direction transverse to the first axis, the base portion has a through hole, the screw member is inserted through the through hole and screwed into the screw hole, the at least one elastic member is elastically pressed between the base portion and the receiving groove, the at least one elastic member is sleeved on the screw member, the base portion, the expanding section and the narrow diameter section are integrally formed, and outer peripheral surfaces of the narrow diameter section and the expanding section are flush with each other when viewed in an extending direction of the first axis.

7. The clamping apparatus as claimed in claim 3, wherein the pressing member further comprises a base portion, the base portion has a through hole, the locking member is threaded through the through hole and is disposed in the threaded hole, the base portion further has a radially extending abutting surface corresponding to the diameter expanding section outside the through hole, the number of the at least one elastic member is two, one of the elastic members is sleeved on the narrow diameter section and is abutted against the diameter expanding section, and the other elastic member is abutted between the base portion and the accommodating groove.

8. The fixture apparatus of claim 2, wherein the first direction passes through the locking member, the pressing member and the through hole, and the first direction extends vertically.

9. The fixture apparatus of claim 1, wherein the sliding slot includes a sloped side wall and a straight side wall, the sloped side wall and the straight side wall are respectively connected to two opposite sides of a bottom surface of the sliding slot, the straight side wall is perpendicular to the bottom surface, the sliding block is a dovetail block, the side surface faces the straight side wall, the side surface is an inclined surface, the narrow diameter section is provided with an inclined surface, the inclined surface is pressed against the inclined surface, and the inclined surface is an inclined tooth surface.

10. The fixture apparatus of claim 4, wherein the receiving slot is open in the first direction; the sliding groove comprises a bottom surface facing the opening direction, and a gap is formed between the narrow-diameter section and the bottom surface; the sliding groove comprises an inclined side wall and a straight side wall, the inclined side wall and the straight side wall are respectively connected to two opposite sides of the bottom surface, the straight side wall is perpendicular to the bottom surface, the sliding block is a dovetail block, the side surface corresponds to the straight side wall, and a corner of the dovetail block is not contacted with the intersection of the straight side wall and the bottom surface; the side surface is an inclined surface, the narrow diameter section is provided with an inclined abutting surface which is forced to abut against the inclined surface, a gap is formed between the sliding block and the bottom surface, and the size of the inclined abutting surface in the opening direction is smaller than that of the inclined surface; the number of the at least one fastening part is plural, and the number of the at least one positioning component is plural; the accommodating groove comprises a deep groove and a shallow groove, the deep groove and the shallow groove are arranged towards the opening direction, the through hole is arranged on the shallow groove, the screw hole is arranged on the deep groove, the diameter expanding section and the narrow diameter section are accommodated in the shallow groove, and the narrow diameter section extends out of the base part towards the direction with the side surface; the inclined butting surface extends towards the direction of the bottom surface and exceeds the inclined surface; the through hole is a stepped hole and comprises a large-diameter hole, a small-diameter hole and a shoulder part, the screw locking piece is a countersunk head screw which comprises a head section and a body section, the head section is arranged in the large-diameter hole and does not protrude out of the large-diameter hole, the head section is abutted against the shoulder part, the body section penetrates through the small-diameter hole, and the head section is abutted against the wall of the large-diameter hole in the radial direction; the sliding block is provided with a concave part which is concave towards the first direction; each fastening part is additionally provided with a partition wall which is arranged between each narrow-diameter section and the clamping block.

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