A clamp

Abstract

The present invention relates to a clamp, comprising: a base, on which a first locking hole is provided; a push piece, arranged on the base; a pushing assembly, arranged on a first surface; a clamp assembly, arranged on the first surface, and comprising a first clamp and a second clamp arranged on both sides of the first locking hole along a first direction; a cover plate, on which a second locking hole is provided and covered on the first surface; the second locking hole and the first locking hole are aligned; the clamp has an initial position and a working position; in the initial position, the push piece, the pushing assembly and the clamp assembly are configured such that, under the action of an external force, the push piece is used to drive the pushing assembly to move along the second direction, and then the pushing assembly drives the first clamp and the second clamp to move toward each other along the first direction, so that the clamp is in the working position, and the second direction is perpendicular to the first direction; in the working position, the push piece is also configured to lock the position of the clamp assembly. The present invention has the advantage of being easy to use.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a clamp. Background Art

[0002] Medical surgical instruments are of many types and complex to process. When processing in a machining center, various types of tooling are often required to improve the efficiency and accuracy of workpiece processing. In traditional operations, most tooling is directly installed on the workbench of the machine tool through tools such as T-blocks, screws, pressure plates, and nuts, which has the disadvantages of long operation time and inaccurate tooling positioning.

[0003] Based on this, some clamps for installing tooling on machine tools have appeared in the prior art. Figure 1 A clamp in the prior art is shown, which includes a base 10, a wedge block assembly and a hexagon socket bolt 20, wherein the base 10 is provided with four rivet holes 30 distributed in a matrix shape, and the rivet holes 30 are used to install rivets, and the wedge block assembly includes a first wedge block 41, a second wedge block 42, a third wedge block 43, a fourth wedge block 44, a fifth wedge block 45, a sixth wedge block 46 and a seventh wedge block 47, wherein the first wedge block 41 and the second wedge block 42 are coaxially arranged between two rivets to form a first wedge block group; the third wedge block 43 and the fourth wedge block 44 are coaxially arranged between the other two rivets to form a second wedge block group; the fifth wedge block 45 and the sixth wedge block 46 are coaxially arranged to form a third wedge block group; the first wedge block group, the second wedge block group and the third wedge block group are arranged in an "I" shape. The seventh wedge block 47 is perpendicular to the third wedge block group, one end of the seventh wedge block 47 is in contact with the fifth wedge block 45 and the sixth wedge block 46 at the same time, and the other end is in contact with the hexagon socket bolt 50. In the clamp, by tightening the hexagon socket bolt 50, the seventh wedge block 47 is driven to move, thereby driving the fifth wedge block 45 and the sixth wedge block 46 to move, the fifth wedge block 45 drives the first wedge block 41 and the second wedge block 42 to move toward the pull pin, and the sixth wedge block 46 drives the third wedge block 43 and the fourth wedge block 44 to move toward the pull pin until all the pull pins are pressed tightly.

[0004] During the actual use of the fixture, the torque of the hexagon socket bolt needs to be measured by a torque wrench. If the torque is too small, the wedge block cannot fix the rivet. If the torque is too large, disassembly is time-consuming and laborious, which is not conducive to the quick change of tooling. Summary of the invention

[0005] The object of the present invention is to provide a clamp which has a simple structure and can conveniently and quickly lock an object to be clamped on the clamp.

[0006] To achieve the above object, the present invention provides a clamp, comprising:

[0007] The base comprises a first surface, wherein a first locking hole is provided on the first surface;

[0008] A push member, part of which is movably disposed on the base;

[0009] A pushing component is movably disposed on the first surface and is connected to or abuts against the pushing member;

[0010] a clamping plate assembly, movably disposed on the first surface, and comprising a first clamping plate and a second clamping plate arranged on both sides of the first locking hole along a first direction; and,

[0011] A cover plate, used for covering the first surface, and a second locking hole is provided on the cover plate;

[0012] Wherein, the second locking hole and the first locking hole are arranged in alignment and are used to install the object to be clamped;

[0013] The clamp has an initial position and a working position;

[0014] In the initial position, the push member, the pushing assembly and the clamping plate assembly are configured such that the push member is used to drive the pushing assembly to move along the second direction, and then the pushing assembly drives the first clamping plate and the second clamping plate to move toward each other along the first direction until the object to be clamped is clamped, so that the clamp is in the working position, and the second direction is perpendicular to the first direction;

[0015] In the working position, the push member is further configured to lock the position of the clamping plate assembly.

[0016] Optionally, the splint assembly further includes a splint resetting elastic member;

[0017] In the working position, the splint reset elastic member is configured to store elastic potential energy; when the push member releases the lock on the splint assembly, the splint reset elastic member drives the first splint and the second splint to move backwards along the first direction under the action of the elastic potential energy.

[0018] Optionally, the splint reset elastic member includes a first reset elastic member and a second reset elastic member, the first reset elastic member is arranged between the first splint and the base, and the second reset elastic member is arranged between the second splint and the base; in the working position, the first reset elastic member and the second reset elastic member are compressed.

[0019] Optionally, a protrusion is provided on the first surface, the first clamping plate and the second clamping plate are respectively located on both sides of the protrusion, and the first reset elastic member is detachably arranged between the first clamping plate and the protrusion; and / or the second reset elastic member is detachably arranged between the second clamping plate and the protrusion.

[0020] Optionally, the pushing assembly includes a first pushing member, and the first pushing member can be driven by the push member to move along the second direction; the first pushing member includes a first pushing rod extending along the first direction, the first pushing rod has a first end and a second end opposite to each other, a first pressing block is provided on the first end, and a second pressing block is provided on the second end;

[0021] The first pressing block is used to contact the first clamping plate and drive the first clamping plate to move toward the second clamping plate, and the second pressing block is used to contact the second clamping plate and drive the second clamping plate to move toward the first clamping plate.

[0022] Optionally, the pushing assembly also includes a second pushing member, which is arranged at intervals with the first pushing member in the second direction, and is connected to the first pushing member, and can move toward the first pushing member under the drive of the first pushing member, so that the second pushing member and the first pushing member can simultaneously drive the first clamping plate and the second clamping plate to move toward each other.

[0023] Optionally, the second pushing member comprises a second pushing rod extending along the first direction, the second pushing rod having a third end and a fourth end opposite to each other, a third pressing block being disposed on the third end, and a fourth pressing block being disposed on the fourth end;

[0024] The third pressing block is used to contact the first clamping plate and drive the first clamping plate to move toward the second clamping plate along the first direction; the fourth pressing block is used to contact the second clamping plate and drive the second clamping plate to move toward the first clamping plate.

[0025] Optionally, the pushing assembly further comprises a positioning elastic member, and the positioning elastic member is arranged between the base and the first pushing member;

[0026] In the initial position, the positioning elastic member is configured to store elastic potential energy, and the positioning elastic member is used to abut against the first pushing member under the action of the elastic potential energy.

[0027] Optionally, the pushing assembly further includes a positioning elastic member, wherein the positioning elastic member is disposed between the first pushing member and the second pushing member.

[0028] In the initial position, the positioning elastic member is compressed to store elastic potential energy, and the positioning elastic member abuts against the first pushing member and the second pushing member under the action of the elastic potential energy.

[0029] Optionally, the pushing assembly further includes a connecting plate, which is rotatably disposed on the first surface and has a fifth end and a sixth end opposite to each other, the first pushing member is rotatably connected to the fifth end, and the second pushing member is rotatably connected to the sixth end.

[0030] Optionally, the first clamping plate includes a first side surface and a second side surface, the first side surface faces the object to be clamped and is parallel to the second direction, the second side surface is inclined from an end close to the push member to a direction away from the object to be clamped, the first side surface is used to contact the object to be clamped to clamp the object to be clamped, and the second side surface is used to contact the first pressing block;

[0031] The second clamping plate includes a fourth side surface and a fifth side surface, the fourth side surface faces the object to be clamped and is parallel to the second direction, the fifth side surface is inclined from an end close to the push member toward a direction away from the object to be clamped, the fourth side surface is used to contact the object to be clamped to clamp the object, and the fifth side surface is used to contact the first pressure block.

[0032] Optionally, the first clamping plate is in a triangular structure and has a first side surface, a second side surface and a third side surface connected in sequence; wherein the first side surface faces the object to be clamped and is parallel to the second direction, the second side surface and the third side surface are respectively inclined from both ends of the first side surface in a direction away from the object to be clamped, the first side surface is used to contact with the object to be clamped to clamp the object to be clamped, the second side surface is used to contact with the first pressing block, and the third side surface is used to contact with the third pressing block;

[0033] The second clamping plate has a triangular structure and has a fourth side surface, a fifth side surface and a sixth side surface connected in sequence; wherein the fourth side surface faces the object to be clamped and is parallel to the second direction, the fifth side surface and the sixth side surface are respectively inclined from both ends of the fourth side surface in a direction away from the object to be clamped, the fourth side surface is used to contact the object to be clamped to clamp the object to be clamped, the fifth side surface is used to contact the second pressure block, and the sixth side surface is used to contact the fourth pressure block.

[0034] Optionally, the surface of the first pressing block facing the first clamping plate matches the second side surface, and the surface of the second pressing block facing the second clamping plate matches the fifth side surface; the surface of the third pressing block facing the first clamping plate matches the third side surface, and the surface of the fourth pressing block facing the second clamping plate matches the sixth side surface.

[0035] Optionally, the push member includes a fixed seat and a connecting rod mechanism, the fixed seat is arranged on the base and has an inner cavity extending along the second direction; the connecting rod mechanism includes a pushing rod, a second connecting rod and an operating part, wherein the pushing rod is movably arranged in the inner cavity and connected to the pushing assembly, the operating part is rotatably arranged on the fixed seat, one end of the second connecting rod is hinged to the pushing rod, and the other end is hinged to the operating part.

[0036] Optionally, the base further includes a second surface, the second surface is arranged opposite to the first surface, an anti-adsorption groove is arranged on the second surface, and the anti-adsorption groove extends from an edge of the second surface to a middle part of the second surface.

[0037] Compared with the prior art, the clamp of the present invention has the following advantages:

[0038] First, the aforementioned clamp includes a base, a push piece, a pushing assembly, a clamping plate assembly and a cover plate, the base includes a first surface, and a first locking hole is provided on the first surface; the push piece can be movably arranged on the base; the pushing assembly can be movably arranged on the first surface; the clamping plate assembly can be movably arranged on the first surface, and includes a first clamping plate and a second clamping plate arranged on both sides of the first locking hole along a first direction; the cover plate is covered on the first surface and fixedly connected to the base, and a second locking hole aligned with the first locking hole is provided on the cover plate. The first locking hole and the second locking hole are used to install the object to be clamped; the clamp has an initial position and a working position, and in the initial position, the push piece, the pushing assembly and the clamping plate assembly are configured such that, under the action of an external force, the push piece is used to drive the pushing assembly to move in the second direction, and then the pushing assembly drives the first clamping plate and the second clamping plate to move toward each other in the first direction until the clamping plate assembly clamps the object to be clamped so that the clamp is in the working position, and the second direction is perpendicular to the first direction; in the working position, the push piece is also configured to lock the position of the clamping plate assembly. The push piece drives the pushing assembly to move, and then drives the clamping plate assembly to move to clamp the object to be clamped, so that the positioning and locking of the tooling are completed in one step, which has the advantage of simple and convenient operation.

[0039] Second, by providing the clamp plate reset elastic member and the positioning elastic member, the clamp plate assembly and the push assembly can be quickly restored to the initial position, and the clamp can be kept in the initial position, thereby realizing the installation and quick replacement of the tooling.

[0040] Third, the clamping plate reset elastic member includes a first reset elastic member and a second reset elastic member, and the first reset elastic member and / or the second reset elastic member are detachably arranged between the clamping plate assembly and the base. Suitable elastic elastic members can be selected for different objects to be clamped to ensure that the objects to be clamped can be effectively fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of a clamp in the prior art;

[0042] Figure 2 is a schematic diagram of the overall structure of a clamp provided according to an embodiment of the present invention;

[0043] Figure 3 is a schematic structural diagram of a clamp provided according to an embodiment of the present invention, in which the cover plate is not shown and the clamp is in an initial position;

[0044] Figure 4 is a schematic structural diagram of a clamp provided according to an embodiment of the present invention, in which the cover plate is not shown and the clamp is in a working position;

[0045] Figure 5 is a schematic structural diagram of a first clamp in a clamp provided by an embodiment of the present invention;

[0046] Figure 6 is a schematic diagram of the connection relationship between the first pushing member and the second pushing member in the clamp provided according to one embodiment of the present invention;

[0047] Figure 7 is an exploded view of a connection mechanism in a clamp provided according to an embodiment of the present invention;

[0048] Figure 8 is a schematic diagram of a first surface of a base of a clamp provided according to an embodiment of the present invention;

[0049] Fig. 9 It is a schematic diagram of a second surface of a base of a fixture provided according to an embodiment of the present invention.

[0050] [Description of reference numerals is as follows]:

[0051] 10,100-base;

[0052] 20-hexagon socket bolt;

[0053] 30-Rivet hole;

[0054] 41- first wedge-shaped block, 42- second wedge-shaped block, 43- third wedge-shaped block, 44- fourth wedge-shaped block, 45- fifth wedge-shaped block, 46- sixth wedge-shaped block, 47- seventh wedge-shaped block;

[0055] 110-first locking hole; 120-first positioning hole;

[0056] 130 - protrusion;

[0057] 131 - second positioning groove; 132 - fourth positioning groove;

[0058] 140 - second positioning hole;

[0059] 150-anti-adsorption tank;

[0060] 200- push piece;

[0061] 210-fixed seat;

[0062] 220-second connecting rod mechanism;

[0063] 221-push rod, 222-second connecting rod, 223-operating part;

[0064] 300-Pushing assembly;

[0065] 310-first pushing member;

[0066] 311-first bottom plate, 312-first push rod, 313-first pressing block, 314-second pressing block, 315-card slot;

[0067] 320-second pushing member;

[0068] 321 - second bottom plate, 322 - second push rod, 323 - third pressing block, 324 - fourth pressing block;

[0069] 330-connection mechanism;

[0070] 331-connecting plate, 332-connecting shaft, 333-bearing, 334-first cam bearing follower, 335-second cam bearing follower, 336-gasket;

[0071] 340-positioning elastic member;

[0072] 350 - first connecting rod;

[0073] 400-Splint assembly;

[0074] 410- first splint;

[0075] 411 - first side surface, 412 - second side surface, 413 - third side surface, 414 - first positioning groove;

[0076] 420 - second splint;

[0077] 421- fourth side, 422- fifth side, 423- sixth side;

[0078] 500-cover plate;

[0079] 510-second locking hole;

[0080] 600-reset elastic member;

[0081] 610 - first resetting elastic member, 620 - second resetting elastic member. DETAILED DESCRIPTION

[0082] In order to make the purpose, advantages and features of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0083] As used in this specification, the singular forms "a", "an", and "the" include plural objects, and the plural form "plurality" includes more than two objects, unless the content clearly indicates otherwise. As used in this specification, the term "or" is generally used in a sense that includes "and / or", unless the content clearly indicates otherwise, and the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The same or similar figure marks in the drawings represent the same or similar parts.

[0084] In the description of the embodiments of the present invention, it should be understood that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0085] See also Figure 2 , Figure 3 and Figure 4, an embodiment of the present invention provides a clamp, which includes a base 100, a push member 200, a pushing assembly 300, a clamping plate assembly 400 and a cover plate 500. The base 100 includes a first surface, and a first locking hole 110 is provided on the first surface. The first locking hole 110 is used to insert an object to be clamped, so it can be a blind hole or a through hole, but in order to prevent cutting fluid and the like from leaking into the interior of the clamp, a blind hole is preferably used. In principle, the object to be clamped can be any rod-shaped object, typically a rivet. The shape of the first locking hole 110 is determined by the cross-sectional shape of the object to be clamped, and is preferably circular. The following is an example of the case where the object to be clamped is a rivet and the first locking hole 110 is circular.

[0086] The push member 200 is arranged on the base 100, and a part of the push member 200 can move on the base 100. The pushing assembly 300 can be movably arranged on the first surface, and connected or abutted with the push member 200. The clamping plate assembly 400 can be movably arranged on the first surface, and includes a first clamping plate 410 and a second clamping plate 420, the first clamping plate 410 and the second clamping plate 420 are arranged at intervals in the first direction, and are respectively located on both sides of the first locking hole 110. The cover plate 500 is covered on the first surface, and can be fixedly connected to the base 100, and the cover plate 500 is provided with a second locking hole 510. The second locking hole 510 is a through hole, which is convenient for the rivet to wait for the clamp to pass through.

[0087] The second locking hole 510 and the first locking hole 110 are aligned and used to install a rivet (not shown in the figure). The clamp has an initial position and a working position. In the initial position, the push member 200, the pushing assembly 300 and the clamp assembly 400 are configured so that the push member 200 is used to drive the pushing assembly 300 to move along the second direction, and then the pushing assembly 300 drives the first clamp 410 and the second clamp 420 to move toward each other until the rivet is clamped so that the clamp is in the working position. In the working position, the push member 200 is also configured to lock the position of the clamp assembly 400. It can be understood that the "initial position" is relative to the working position. In the initial position, the clamp assembly 400 does not clamp the rivet. The first direction is perpendicular to the second direction. For ease of description, the first direction is used as the second direction. Figure 4 Taking the shown direction as an example, the direction extending up and down is defined as the first direction, and the direction extending left and right is defined as the second direction.

[0088] In this embodiment, the number of the first locking holes 110 is four, and the four first locking holes 110 are distributed in a matrix on the first surface. Correspondingly, the number of the second locking holes 510 is also four, and the second locking holes 510 are arranged one-to-one with the first locking holes 110 to form four rivet installation holes, and the rivets are installed in these four rivet installation holes, so that the rivets are arranged on the clamp in a matrix, and the first clamping plate 410 and the second clamping plate 420 are arranged on both sides of the rivets. In other embodiments, the first locking holes 110 and the second locking holes 510 can also form a matrix of 2×3, 3×3, 2×4, etc., or an array composed of the above matrix and any locking holes within the matrix range, as long as the locking holes closest to the first clamping plate 410 and the second clamping plate 420 can form a matrix greater than or equal to 2×2. The number of the first locking holes 110 and the number of the second locking holes 510 can be greater than the number of the rivets to be clamped, as long as the positions of the locking holes can be aligned with the rivets to be clamped.

[0089] The first clamping plate 410 and the second clamping plate 420 move toward each other, that is, the first clamping plate 410 and the second clamping plate 420 move toward the pull nail respectively (i.e. Figure 4 The first clamping plate 410 moves downward and the second clamping plate 420 moves upward) until the first clamping plate 410 and the second clamping plate 420 press against the rivet and fix the rivet on the fixture, so that the fixture is in the working position. Since there is a circle of grooves extending in the circumferential direction between the spherical head and the cylindrical rod of the rivet, it is preferred that one side of the first clamping plate 410 and the second clamping plate 420 facing the rivet (such as the first side 411 and the fourth side 421 described later) has a curved surface matching the groove, so that the clamping state is more stable. In other embodiments, if the object to be clamped is cylindrical, it is preferred that the side has a curved surface matching the cylindrical surface; if the object to be clamped is a regular quadrangular prism, it is preferred that the side is a plane. That is, the side preferably has a shape matching the side of the object to be clamped. When the clamp provided in this embodiment is used, effective fixation of the rivet can be achieved without measuring the force applied by the push member 200 to the clamp assembly 400, which has the advantages of simple and convenient operation.

[0090] The following is combined with Figure 2 To Attachment Fig. 9 The structure and matching relationship of each component in the clamp are described in detail. It should be understood that the structure and assembly relationship of each component in the following embodiment is only one implementation of the present invention, which is not the only choice, and thus should not limit the present invention.

[0091] like Figure 3 and Figure 4As shown, the pushing assembly 300 includes at least one first pushing member 310, and the first pushing member 310 is in contact with the resisting member 200 or the first pushing member 310 is fixedly connected to the resisting member 200 by welding, threaded connection, etc., as long as the first pushing member 310 can receive the force from the resisting member 200 and can move along the second direction under this force.

[0092] The first pushing member 310 includes a first bottom plate 311, the first bottom plate 311 is connected to the push member 200, and a first pushing rod 312 extending along a first direction is provided on the first bottom plate 311, the first pushing rod 312 has a first end and a second end opposite to each other, a first pressing block 313 is provided on the first end, and a second pressing block 314 is provided on the second end. The first pressing block 313 contacts the first clamping plate 410 and is used to drive the first clamping plate 410 to move toward the second clamping plate 420, and the second pressing block 314 contacts the second clamping plate 420 and is used to drive the second clamping plate 420 to move toward the first clamping plate 410. In this embodiment, the first pushing rod 312 can be fixedly disposed on the first bottom plate 311, or as Figure 6 As shown, a slot 315 is formed on the first bottom plate 311 , and the first pushing rod 312 is locked in the slot 315 .

[0093] Further, the pushing member 300 may further include a second pushing member 320, and the second pushing member 320 is arranged in the second direction at intervals from the first pushing member 310. The second pushing member 320 is connected to the first pushing member 310, and can move toward the first pushing member 310 under the drive of the first pushing member 310, so that the second pushing member 320 and the first pushing member 310 simultaneously drive the first clamping plate 410 and the second clamping plate 420 to move toward each other.

[0094] Optionally, the structure of the second pushing member 320 may be similar to that of the first pushing member 310. Figure 3 and Figure 4The second pushing member 320 includes a second bottom plate 321, which is connected to the first bottom plate 311. A second pushing rod 322 extending along the first direction is provided on the second bottom plate 321. The second pushing rod 322 is fixed on the second bottom plate 321, or the second pushing rod 322 is movably provided on the second bottom plate 321. The second pushing rod 322 has a third end and a fourth end opposite to each other. A third pressing block 323 is provided on the third end, and a fourth pressing block 324 is provided on the fourth end. The third pressing block 323 contacts the first clamping plate 410 and is used to drive the first clamping plate 410 to move toward the second clamping plate 420. The fourth pressing block 324 contacts the second clamping plate 420 and is used to drive the second clamping plate 420 to move toward the first clamping plate 410.

[0095] The second bottom plate 321 is connected to the first bottom plate 311 through a connecting mechanism 330. Figure 6 , Figure 7 , and combined with Figure 3 , Figure 4 The connecting mechanism 330 includes a connecting plate 331, a connecting shaft 332, a bearing 333, a first cam bearing follower 334 and a second cam bearing follower 335. A first positioning hole 120 is provided at the center of the first surface of the base 100. The connecting plate 331 is arranged on the connecting shaft 332 through a bearing 333, and a gasket 336 is also arranged on the bearing 333. The connecting shaft 332 is rotatably arranged at the first positioning hole 120. The connecting plate has a fifth end and a sixth end opposite to each other. The fifth end is provided with the first cam bearing follower 334, which is connected to the first bottom plate 311 through a nut. The sixth end is provided with the second cam bearing follower 335, which is connected to the second bottom plate 321 through a nut. In this way, the first bottom plate 311, the second bottom plate 321 and the connecting plate 331 together constitute a first connecting rod mechanism. When the clamp is in the initial position, the connecting plate 331 can be arranged along the first direction. When the first pushing member 310 moves toward the right, the first pushing member 310 pushes the connecting plate 331 to rotate clockwise, thereby pulling the second pushing member 320 to move to the left.

[0096] To cooperate with the first push piece 310 and the second push piece 320, the first clamping plate 410 can be designed as a triangular structure, such as an isosceles triangle structure. It is understood that the "triangular structure" here can be a triangular structure in a geometric sense, or a structure similar to a triangle. Please refer to 5 and combine Figure 4The first clamping plate 410 includes a first side surface 411, a second side surface 412 and a third side surface 413 connected in sequence, wherein the first side surface 411 serves as the base of the isosceles triangle, and the second side surface 412 and the third side surface 413 serve as the waist of the isosceles triangle. The first side surface 411 is disposed toward the rivet and extends along the second direction, i.e., parallel to the distribution direction of the rivet, and is used to press against the rivet to fix the rivet on the clamp. The second side surface 412 is used to contact the first pressing block 313, and the third side surface 413 is used to contact the third pressing block 323. The second side surface 412 and the third side surface 413 are inclined from both ends of the first side surface 411 in a direction away from the rivet. In this way, when the first pressing block 313 is driven by the push member 200 to approach, due to the inclination angle of the second side surface 412, the first clamping plate 410 is pushed toward the direction of the second clamping plate 420. Similarly, the second clamping plate 420 can also be designed as an isosceles triangle structure, and has a fourth side surface 421, a fifth side surface 422 and a sixth side surface 423 connected in sequence, wherein the fourth side surface 421 can be used as the base of the isosceles triangle, and the fifth side surface 422 and the sixth side surface 423 can be used as the waist of the isosceles triangle. The fourth side surface 421 is arranged toward the rivet and is used to press against the rivet to fix the rivet on the clamp, the fifth side surface 422 contacts the second pressing block 314, and the sixth side surface 423 contacts the fourth pressing block 324. In this way, the first clamping plate 410 and the second clamping plate 420 can be subjected to balanced forces to ensure smooth movement.

[0097] Furthermore, the surface of the first pressing block 313 facing the second side surface 412 matches the second side surface 412, so as to increase the contact area between the first pressing block 313 and the second side surface 412 and improve the efficiency of force transmission. Similarly, the surface of the second pressing block 314 facing the fifth side surface 422 matches the fifth side surface 422, the surface of the third pressing block 323 facing the third side surface 413 matches the third side surface 413, and the surface of the fourth pressing block 324 facing the sixth side surface 423 matches the sixth side surface 423.

[0098] In some embodiments, only one first pushing member 310 may be provided without the second pushing member 320, so that the first clamping plate 410 may only include the first side surface 411 facing the rivet and parallel to the second direction, and the second side surface 412 matched with the first pressing block 313, without including the third side surface 413. The second clamping plate 420 may be provided in the same manner.

[0099] Please continue to refer to Figure 3 and Figure 4The clamp further includes a clamp plate reset elastic member 600. In the working position, the clamp plate reset elastic member 600 is configured to store elastic potential energy. When the push member 200 releases the locking of the clamp plate assembly 400 under the action of an external force, the clamp plate reset elastic member 600 drives the first clamp plate 410 and the second clamp plate 420 to move in opposite directions (i.e., Figure 4 The first clamping plate 410 moves upward and the second clamping plate 420 moves downward) to move away from the pull nail and release the fixation of the pull nail, so that the clamp is in the initial position. By setting the clamping plate reset elastic member 600, the clamping plate assembly 300 and the pushing assembly 300 can be quickly reset, thereby realizing the quick replacement of the tooling.

[0100] Specifically, the resetting elastic member 600 includes a first resetting elastic member 610 and a second resetting elastic member 620, wherein the first resetting elastic member 610 is disposed between the first clamping plate 410 and the base 100, and the second resetting elastic member 620 is disposed between the second clamping plate 420 and the base 100. For more details, please refer to Figure 3 , and combined with Figure 5 and Figure 8 The first surface of the base 100 is provided with a protrusion 130 (specifically located in the middle of the first surface and surrounding the first positioning hole 120), and the first clamping plate 410 and the second clamping plate 420 are respectively located on both sides of the protrusion 130. The first resetting elastic member 610 is disposed between the first clamping plate 410 and the protrusion 130, and the second resetting elastic member 620 is disposed between the second clamping plate 420 and the protrusion 130. When the clamp is in the working position, the first resetting elastic member 610 and the second resetting elastic member 620 are both compressed to store elastic potential energy.

[0101] Furthermore, if Figure 5 As shown, the first clamping plate 410 is provided with a first positioning groove 414. Figure 8As shown, the protrusion 130 is provided with a second positioning groove 131 that matches the first positioning groove 414, and the first resetting elastic member 610 is preferably a spring, and the two ends of the spring are respectively placed in the first positioning groove 414 and the second positioning groove 131. The second clamping plate 420 is provided with a third positioning groove (not marked in the figure), and the protrusion 130 is provided with a fourth positioning groove 132 that matches the third positioning groove, and the second resetting elastic member 620 is also preferably a spring, and the two ends of the spring are respectively placed in the third positioning groove and the fourth positioning groove 132. The advantage of such a setting is that the first resetting elastic member 610 and the second resetting elastic member 620 can be easily disassembled and replaced according to actual needs, thereby improving the applicability of the clamp.

[0102] During the movement of the first clamping plate 410 and the second clamping plate 420 under the elastic force of the clamping plate reset elastic member 600, the first clamping plate 410 and the second clamping plate 420 also push the first push member 310 to the right and the second push member 320 to the left respectively, so that the clamp returns to the initial position, thereby enabling quick replacement of the tooling. However, usually, after the clamp returns to the initial position, the push assembly 300 is not fixed and may be disturbed by external forces and move, causing the clamp to deviate from the initial position and not conducive to quick replacement of the tooling. Figure 2 and Figure 3 As shown, to address this problem, the pushing assembly 300 also includes a positioning elastic member 340. In the initial position, the positioning elastic member 340 is configured to store elastic potential energy. The positioning elastic member 340 fixes the position of the first pushing member 310 under the action of the elastic potential energy.

[0103] Specifically, in this embodiment, the positioning elastic member 340 can be disposed between the first push member 310 and the second push member 320. In the initial position, the positioning elastic member 340 is compressed and stores elastic potential energy (of course, the positioning elastic member 340 is also compressed in the working position), and the positioning elastic member 340 is pressed against the first push member 310 and the second push member 320 under the action of the elastic potential energy, so that the first push member 310 and the second push member 320 remain stationary at the same time to maintain the clamp in the initial position. In order to avoid the positioning elastic member 340 from being kinked in the working position, a first connecting rod 350 extending along the second direction is further disposed between the first push member 310 and the second push member 320. The positioning elastic member 340 is a spring, and the positioning elastic member 340 is sleeved on the first connecting rod 350. In addition, in the working position, when the push member 200 releases the lock on the clamp assembly 400, the positioning elastic member 340 is also used to push the first pushing member 310 and the second pushing member 320 to move backwards, so that the clamp quickly returns to the initial position.

[0104] In the embodiment with only the first push member 310 but no second push member 320, the positioning elastic member 340 is disposed between the base and the first push member. In the initial position, the positioning elastic member is compressed and stores elastic potential energy, and the positioning elastic member is used to abut the first push member under the action of the elastic potential energy.

[0105] Alternatively, if Figure 3 and Figure 4 As shown, in this embodiment, the push member 200 may include a fixed seat 210 and a second connecting rod mechanism 220, wherein the fixed seat 210 is fixedly arranged on the base 100, for example, arranged on the right side wall of the base 100, and the fixed seat 210 has an inner cavity extending through along the second direction. The second connecting rod mechanism 220 includes a push rod 221, a second connecting rod 222 and an operating part 223, wherein the push rod 221 is movably arranged in the inner cavity and connected to the first pushing member 310 (specifically connected to the first bottom plate 311), and the operating part 223 is rotatably arranged on the fixed seat 210, one end of the second connecting rod 222 is hinged to the push rod 221, and the other end is hinged to the operating part 223. Moreover, when the clamp is in the working position, the operating part 223 is in a dead point position, and at the dead point position, the operating part 223 can only move under the action of an external force. It can be understood that the “external force” refers to the force coming from a mechanism (such as a person) or element other than the clamp.

[0106] Figure 3, the fixture is in the initial position, Figure 4 The clamp is in the working position. The following describes the process of switching the clamp from the initial position to the working position, and the process of switching the clamp from the working position to the initial position.

[0107] The process of switching the fixture from the initial position to the working position is as follows:

[0108] Pull the operating part 223 to rotate the operating part 223 ( Figure 2 In the embodiment of the present invention, the operating portion 223 rotates clockwise), and drives the push rod 221 to move leftward via the second connecting rod 222, thereby driving the first pushing member 310 to move leftward. The first pushing member 310 drives the connecting plate 331 to rotate clockwise, thereby pulling the second pushing member 320 to move leftward. At the same time, the first pressing block 313 and the third pressing block 323 push the first clamping plate 410 to move downward, and the second pressing block 314 and the fourth pressing block 324 push the second clamping plate 420 to move upward until the first clamping plate 410 and the second clamping plate 420 are pressed against the pull nail. In this process, the first reset elastic member 610, the second reset elastic member 620 and the positioning elastic member 340 are all compressed.

[0109] The process of switching the fixture from the working position to the initial position is as follows:

[0110] A force is applied to the operating portion 223 so that the operating portion 223 can move. Afterwards, the first reset elastic member 610 releases elastic potential energy to push the first clamping plate 410 to move upward, and the second reset elastic member 620 releases elastic potential energy to push the second clamping plate 420 to move downward. The first clamping plate 410, the second clamping plate 420 and the positioning elastic member 340 jointly push the first pushing member 310 to move rightward and the second pushing member 320 to move leftward until the clamp returns to the initial position. In the initial position, the positioning elastic member 340 also presses against the first pushing member 310 and the second pushing member 320 to keep the first pushing member 310 and the second pushing member 320 stationary.

[0111] Also, please refer to Fig. 9The base 100 also has a second surface, and the second surface is arranged opposite to the first surface. A second positioning hole 140 is also provided on the second surface, and the second positioning hole 140 is used to position the base 100 on the workbench of the machine tool. Furthermore, an anti-adsorption groove 150 is also provided on the second surface, and the anti-adsorption groove 150 extends from any edge of the second surface to the middle of the second surface. The purpose of setting the anti-adsorption groove 150 is to prevent the fixture from being adsorbed on the workbench of the machine tool due to cutting fluid. In this embodiment, two anti-adsorption grooves 150 are provided on the second surface, and the two anti-adsorption grooves 150 extend along the first direction and the second direction respectively to form a "cross" shape.

[0112] Although the present invention is disclosed as above, it is not limited thereto. Those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A clamp, characterized in that: include: The base comprises a first surface, wherein a first locking hole is provided on the first surface; A push member, part of which is movably disposed on the base; A clamping plate assembly is movably disposed on the first surface and comprises a first clamping plate and a second clamping plate arranged on both sides of the first locking hole along a first direction; The pushing assembly includes a first pushing piece, a second pushing piece and a connecting plate; the first pushing piece includes a first pushing rod extending along the first direction, the first pushing rod has a first end and a second end opposite to each other, a first pressing block is provided on the first end, and a second pressing block is provided on the second end; wherein the first pressing block is used to contact the first clamping plate and drive the first clamping plate to move toward the second clamping plate, and the second pressing block is used to contact the second clamping plate and drive the second clamping plate to move toward the first clamping plate; the second pushing piece includes a second pushing rod extending along the first direction, the second pushing rod has a third end and a fourth end opposite to each other, a third pressing block is provided on the third end, and A fourth pressure block is provided on the fourth end; wherein the third pressure block is used to contact the first clamping plate and drive the first clamping plate to move along the first direction toward the second clamping plate; the fourth pressure block is used to contact the second clamping plate and drive the second clamping plate to move toward the first clamping plate; the connecting plate is rotatably arranged on the first surface and has a fifth end and a sixth end opposite to each other; the first pushing member and the second pushing member are both movably arranged on the first surface and spaced apart along the second direction, the first pushing member is rotatably connected to the fifth end, and the second pushing member is rotatably connected to the sixth end; the first pushing member is connected or abutted against the abutting member; and, A cover plate, used for covering the first surface, and a second locking hole is provided on the cover plate; Wherein, the second locking hole and the first locking hole are arranged in alignment and are used to install the object to be clamped; The clamp has an initial position and a working position; In the initial position, the push member, the pushing assembly and the clamping plate assembly are configured such that the push member is used to drive the first pushing member and the second pushing member to move toward each other in the second direction, so that the second pushing member and the first pushing member simultaneously drive the first clamping plate and the second clamping plate to move toward each other until the object to be clamped is clamped, so that the clamp is in the working position, and the second direction is perpendicular to the first direction; In the working position, the push member is further configured to lock the position of the clamping plate assembly.

2. The clamp according to claim 1, characterized in that: The splint assembly also includes a splint resetting elastic member; In the working position, the splint reset elastic member is configured to store elastic potential energy; when the push member releases the lock on the splint assembly, the splint reset elastic member drives the first splint and the second splint to move backwards along the first direction under the action of the elastic potential energy.

3. The clamp according to claim 2, characterized in that: The splint reset elastic member includes a first reset elastic member and a second reset elastic member, the first reset elastic member is arranged between the first splint and the base, and the second reset elastic member is arranged between the second splint and the base; in the working position, the first reset elastic member and the second reset elastic member are compressed.

4. The clamp according to claim 3, characterized in that: A protrusion is provided on the first surface, the first clamping plate and the second clamping plate are respectively located on both sides of the protrusion, and the first reset elastic member is detachably arranged between the first clamping plate and the protrusion; and / or the second reset elastic member is detachably arranged between the second clamping plate and the protrusion.

5. The clamp according to claim 1, characterized in that: The pushing assembly further comprises a positioning elastic member, wherein the positioning elastic member is arranged between the base and the first pushing member; In the initial position, the positioning elastic member is configured to store elastic potential energy, and the positioning elastic member is used to abut against the first pushing member under the action of the elastic potential energy.

6. The clamp according to claim 1, characterized in that: The pushing assembly further includes a positioning elastic member, wherein the positioning elastic member is disposed between the first pushing member and the second pushing member. In the initial position, the positioning elastic member is compressed to store elastic potential energy, and the positioning elastic member abuts against the first pushing member and the second pushing member under the action of the elastic potential energy.

7. The clamp according to claim 1, characterized in that: The first clamping plate includes a first side surface and a second side surface, the first side surface faces the object to be clamped and is parallel to the second direction, the second side surface is inclined from an end close to the push member to a direction away from the object to be clamped, the first side surface is used to contact the object to be clamped to clamp the object to be clamped, and the second side surface is used to contact the first pressing block; The second clamping plate includes a fourth side surface and a fifth side surface, the fourth side surface faces the object to be clamped and is parallel to the second direction, the fifth side surface is inclined from an end close to the push member toward a direction away from the object to be clamped, the fourth side surface is used to contact the object to be clamped to clamp the object, and the fifth side surface is used to contact the first pressure block.

8. The clamp according to claim 1, characterized in that: The first clamping plate is in a triangular structure and has a first side surface, a second side surface and a third side surface connected in sequence; wherein the first side surface faces the object to be clamped and is parallel to the second direction, the second side surface and the third side surface are respectively inclined from both ends of the first side surface in a direction away from the object to be clamped, the first side surface is used to contact with the object to be clamped to clamp the object to be clamped, the second side surface is used to contact with the first pushing piece, and the third side surface is used to contact with the second pushing piece; The second clamping plate has a triangular structure and has a fourth side surface, a fifth side surface and a sixth side surface connected in sequence; wherein the fourth side surface faces the object to be clamped and is parallel to the second direction, the fifth side surface and the sixth side surface are respectively inclined from both ends of the fourth side surface in a direction away from the object to be clamped, the fourth side surface is used to contact the object to be clamped to clamp the object to be clamped, the fifth side surface is used to contact the first pushing piece, and the sixth side surface is used to contact the second pushing piece.

9. The clamp according to claim 8, characterized in that The surface of the first pressing block facing the first clamping plate matches the second side surface, and the surface of the second pressing block facing the second clamping plate matches the fifth side surface; the surface of the third pressing block facing the first clamping plate matches the third side surface, and the surface of the fourth pressing block facing the second clamping plate matches the sixth side surface.

10. The clamp according to claim 1, characterized in that The push member includes a fixed seat and a connecting rod mechanism, wherein the fixed seat is arranged on the base and has an inner cavity extending along the second direction; the connecting rod mechanism includes a pushing rod, a second connecting rod and an operating part, wherein the pushing rod can be movably arranged in the inner cavity and connected to the pushing assembly, and the operating part can be rotatably arranged on the fixed seat, one end of the second connecting rod is hinged to the pushing rod, and the other end is hinged to the operating part.

11. The clamp according to claim 1, characterized in that: The base further includes a second surface, which is arranged opposite to the first surface. An anti-adsorption groove is arranged on the second surface, and the anti-adsorption groove extends from an edge of the second surface to a middle portion of the second surface.

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