CN211104505U

CN211104505U - Woodworking clamp

Info

Publication number: CN211104505U
Application number: CN201921817654.8U
Authority: CN
Inventors: 李跃明
Original assignee: Hangzhou Lianhe Tool Manufacturing Co ltd; Hangzhou Great Star Tools Co Ltd
Current assignee: Hangzhou Lianhe Tool Manufacturing Co ltd; Hangzhou Great Star Tools Co Ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-07-28
Anticipated expiration: 2029-10-28

Abstract

The application discloses a woodworking fixture, which comprises a section bar clamp body, a first clamp head and a second clamp head, wherein the first clamp head and the second clamp head are respectively positioned at two ends of the section bar clamp body along a long shaft of the section bar clamp body; the woodworking fixture also comprises at least one movable chuck, and the at least one movable chuck is connected to the upper surface of the profile clamp body in a sliding manner; a locking block is arranged between the movable chuck and the upper surface of the section bar clamp body, and the lower surface of the locking block is in sliding connection with the upper surface of the section bar clamp body; the movable chuck comprises a force application device and a cam shaft, the cam shaft is provided with at least one cam, the force application device is connected with the cam shaft, the force application device can drive the cam shaft to rotate along the central shaft of the cam shaft to enable the cam of the cam shaft to be compressed and positioned on the locking block, the movable chuck is compressed and positioned on the upper surface of the section bar clamp body through the locking block, and the central shaft of the cam shaft is perpendicular to the long shaft of the section bar clamp body. The woodworking fixture can solve the problem of clamping deflection angle.

Description

Woodworking clamp

Technical Field

The application relates to the technical field of clamps, especially, relate to a carpenter's anchor clamps.

Background

The common device that presss from both sides tightly that carries out on the workstation of carpenter's anchor clamps through anchor clamps location work piece, and the processing of being convenient for be applicable to the work piece of different length, generally adopt not unidimensional anchor clamps.

In the prior art, there is a clamp capable of adjusting a clamping length, for example, as shown in patent CN208744613, the clamp includes a clamp body, a fixed chuck fixed on the clamp body, and a movable chuck assembly movably connected to the clamp body and capable of moving along the clamp body, the clamp body is formed by splicing at least two segments of sub-clamp bodies, and the sub-clamp bodies spliced with each other are connected by a clamp body connecting device. The clamp body is formed by splicing at least two sections of sub-clamp bodies, the overall length of the clamp body can be prolonged after the sub-clamp bodies are spliced with each other, and after the sub-clamp bodies are spliced, the position of a fixed clamp head on the clamp body can be changed, namely when a movable clamp head assembly is not moved, the distance between the fixed clamp head and the movable clamp head assembly is increased, so that the maximum clamping distance between the fixed clamp head and the movable clamp head assembly is enlarged.

The movable chuck assembly comprises a chuck fixing frame assembled on the sub-chuck body, a cam type rotating clamping part arranged on the chuck fixing frame, a handle for controlling the rotating clamping part and a movable chuck connected on the chuck fixing frame. The cam type rotating and clamping component comprises a clamping pad and a pin shaft matched with the clamping pad, the clamping pad is positioned in the middle of the chuck fixing frame, a guide hole is formed in the clamping pad, a guide post is arranged on the chuck fixing frame and inserted into the guide hole, and the clamping pad can move relative to the chuck fixing frame under the guidance of the guide post and the guide hole. The bottom of the clamping pad is provided with a groove, the groove is matched with the bulge of the clamping body, the thickness of the upper part and the lower part of the clamping pad is the largest due to the existence of the groove, and the clamping pad is contacted with the bottom of the guide part.

After a workpiece is placed on the upper surface of the clamp body, the movable chuck assembly is moved to clamp the workpiece and is fixed on the clamp body by rotating a handle of the movable chuck assembly.

Therefore, those skilled in the art are dedicated to develop a carpentry clamp to avoid the problem of clamping deflection caused by deviation of the clamping surface from the linear direction of the guide rail after clamping.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present application is to have the technical problem that the clamping surface deviates from the linear direction of the guide rail after clamping.

One aspect of the application provides a woodworking fixture, which comprises a fixture body, a first chuck and a second chuck, wherein the first chuck and the second chuck are respectively located at two ends of the fixture body along a long axis of the fixture body;

the woodworking fixture further comprises at least one movable chuck, and the at least one movable chuck is connected to the upper surface of the clamp body in a sliding mode;

a locking block is arranged between the movable chuck and the upper surface of the clamp body, and the lower surface of the locking block is in sliding connection with the upper surface of the clamp body;

the movable chuck comprises a force application device and a cam shaft, the cam shaft is provided with at least one cam, the force application device is connected with the cam shaft, the force application device can drive the cam shaft to rotate along the central shaft of the cam shaft so that the cam of the cam shaft is pressed on the locking block, the movable chuck is pressed and positioned on the upper surface of the clamp body through the locking block, and the central shaft of the cam shaft is perpendicular to the long shaft of the clamp body.

Optionally, at least one of the first and second jaws is movably connected with the jaw body.

Optionally, the carpenter's clamp further comprises at least one connecting member, the clamp body is provided with a plurality of connecting holes distributed along a long axis of the clamp body, and when the first clamping head and/or the second clamping head move to a predetermined position, the connecting member fixes the first clamping head and/or the second clamping head at the predetermined position through the connecting holes.

Optionally, the connector is a screw or bolt.

Optionally, at least one of the first chuck and the second chuck is a fixed chuck, and is fixedly connected to the chuck body.

Optionally, the clamp body is provided with a groove-shaped rail along a long axis thereof, a sliding groove matched with the groove-shaped rail is formed in the lower surface of the movable chuck, and the movable chuck can slide back and forth on the upper surface of the clamp body through the groove-shaped rail and the sliding groove.

Optionally, the movable chuck further comprises a clamping block fixing frame, a first movable clamping block and a second movable clamping block;

the clamping block fixing frame is provided with slotted holes along two ends of a long shaft of the clamping body respectively, the first movable clamping block and the second movable clamping block are inserted into the slotted holes at two ends of the clamping block fixing frame respectively, and the end side faces of the first movable clamping block and the second movable clamping block, which are inserted into the slotted holes of the clamping block fixing frame, are clamping block push faces.

Optionally, the clamp body is provided with a groove-shaped rail along a long axis thereof, and the lower surfaces of the first movable clamping block and the second movable clamping block are provided with sliding grooves matched with the groove-shaped rail.

Optionally, the middle of the cam shaft is provided with a first cam, and two sides of the cam shaft are provided with a second cam, and the first cam is higher than the second cam;

the surface of the first cam is in contact with the upper surface of the locking block, and the surface of the second cam is in contact with the clamping block pushing surfaces of the first movable clamping block and the second movable clamping block respectively.

Optionally, the movable chuck further includes a first clamping block cushion block and a second clamping block cushion block, and the first clamping block cushion block and the second clamping block cushion block are respectively connected to the outermost ends of the first movable clamping block and the second movable clamping block along the long axis of the clamp body.

Optionally, the clamp body is provided with a groove-shaped rail along a long axis thereof, and the lower surfaces of the first clamping block cushion block and the second clamping block cushion block are provided with sliding grooves matched with the groove-shaped rail.

Optionally, the surfaces of the first movable clamping block and the second movable clamping block are provided with limiting ribs for respectively limiting the first movable clamping block and the second movable clamping block from being completely inserted into the slot holes of the clamping block fixing frame.

Optionally, the force applying device comprises a handle and a shaft, the shaft is fixed with the cam shaft through a central shaft of the cam shaft, and the shaft is then fixed with the handle.

Optionally, the movable chuck is provided with a limiting convex rib, and the force application device is provided with a limiting groove matched with the limiting convex rib, so that the force application device rotates to a preset position.

Optionally, the handle is connected to the shaft by a pin, screw or bolt.

Optionally, the lower surface of the locking block is fixedly connected with a locking gasket, and the lower surface of the locking gasket is slidably connected with the upper surface of the clamp body.

Optionally, the clip body comprises two detachable sub-clip bodies and a connecting piece for connecting the two sub-clip bodies, and the two sub-clip bodies can be mutually inserted and overlapped or overlapped by one part.

Alternatively, the camshaft may be a non-circular hub having at least one cam.

Optionally, the top end of the cam has a locating surface that mates with a surface of the locking block.

Optionally, the positioning surface is a wavy or arc positioning surface.

Optionally, the at least one movable jaw comprises a first movable jaw and a second movable jaw that are separate;

the first movable chuck comprises a first cam shaft, a first handle and a third movable clamping block, the first cam shaft and the third movable clamping block are fixedly inserted along the long axis of the clamp body, and the first handle is connected with the first cam shaft;

the second movable chuck comprises a second cam shaft, a second handle and a fourth movable clamping block, the second cam shaft and the fourth movable clamping block are fixedly inserted along the long axis of the clamp body, and the second handle is connected with the second cam shaft;

the force application device comprises the first handle arranged on the first movable chuck and the second handle arranged on the second movable chuck;

a first locking block is arranged below the first cam shaft, and the lower surface of the first locking block is in sliding contact with the upper surface of the clamp body;

and a second locking block is arranged below the second cam shaft, and the lower surface of the second locking block is in sliding contact with the upper surface of the clamp body.

Optionally, the lower surfaces of the first locking block and the second locking block are respectively fixedly connected with a locking gasket, and the lower surfaces of the two locking gaskets are in sliding contact with the surface of the clamp body.

Optionally, a third clamping block cushion block is clamped at the outer side end of the third movable clamping block along the long axis of the clamping body, a fourth clamping block cushion block is clamped at the outer side end of the fourth movable clamping block along the long axis of the clamping body, and limiting convex ribs are fixedly connected to the surfaces of the third movable clamping block and the fourth movable clamping block respectively.

Optionally, the clamp body has sliding groove tracks on two sides of the long axis thereof, the lower surfaces of the first cam shaft and the third movable clamping block have sliding grooves matched with the sliding groove tracks of the clamp body, and the lower surfaces of the second cam shaft and the fourth movable clamping block have sliding grooves matched with the sliding groove tracks of the clamp body.

Optionally, the first movable chuck further comprises a first pin; the second movable chuck also comprises a second pin shaft;

the first handle is fixedly connected with the first pin shaft, and the surface of the first pin shaft is sleeved with the surface of a protruding shaft at one end of the first cam shaft;

the second handle is fixedly connected with the second pin shaft, and the surface of the second pin shaft is sleeved with the surface of a protruding shaft at one end of the second cam shaft.

Optionally, the first camshaft and the second camshaft have the same structure, a first cam is arranged in the middle of the first camshaft and the second camshaft, second cams are arranged on two sides of the first camshaft and the second camshaft, and the first cam is higher than the second cams;

the surface of a first cam of the first cam shaft is in contact with the upper surface of the first locking block, and the surface of a second cam of the first cam shaft is in contact with the clamping block pushing surface of the third movable clamping block;

the surface of the first cam of the second cam shaft is in contact with the upper surface of the second locking block, and the surface of the second cam shaft is in contact with the clamping block pushing surface of the fourth movable clamping block.

Has the advantages that:

when the movable chuck is fixed on the upper surface of the clamp body, the stress direction applied to the force application device is always parallel to the track, namely the stress is applied forwards and backwards relative to the long axis of the clamp body, so that the problem that a workpiece deviates from the linear direction of the guide rail is solved, the problem of clamping deflection angle can be avoided, and the movable chuck is more stably fixed on the upper surface of the clamp body.

Moreover, a workpiece can be clamped between the first chuck and the first movable clamping block, another workpiece can be clamped between the second chuck and the second movable clamping block, and workpiece clamping on two sides can be realized.

The movable chuck is pressed on the surface of the chuck body through the force application device, so that the movable chuck is positioned more stably.

Furthermore, after the workpiece is placed, the operator only needs to push the force application device to clamp the workpiece, so that the operation is simple and convenient.

The conception, specific structure and technical effects of the present application will be further described in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present application.

Drawings

FIG. 1 is a schematic view of a carpentry clamp according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram illustrating a disassembled structure of the movable clamp head shown in FIG. 1 of a carpentry clamp according to an embodiment of the present disclosure;

fig. 3 is a schematic perspective view of the clamping block fixing frame of the carpentry clamp shown in fig. 2;

FIG. 4 is a schematic structural view of the carpentry clamp of FIG. 2 showing a first movable block and a first block;

FIG. 5 is a schematic structural view of the carpenter's clamp of FIG. 2 showing another direction of the first movable clamping block and the first clamping block pad;

FIG. 6 is a schematic cross-sectional view of the cam shaft of the woodworking fixture shown in FIG. 2;

FIG. 7 is a schematic perspective view of a camshaft in the carpentry clamp of FIG. 2;

FIG. 8 is a sectional view taken along line A-A of FIG. 1 of a carpentry clamp according to an embodiment of the present disclosure;

FIG. 9 is a sectional view taken along line B-B of a carpentry clamp according to the embodiment of the present application;

FIG. 10 is a schematic view of a carpentry clamp according to the present embodiment taken along the direction C-C in FIG. 1;

FIG. 11 is a partial view of the movable clamp head of FIG. 1 of a woodworking fixture as disclosed in an embodiment of the disclosure;

FIG. 12 is a schematic structural view of a carpentry clamp according to another embodiment of the present application;

FIG. 13 is a schematic view of the carpenter's jig shown in FIG. 12;

FIG. 14 is a schematic view of the carpenter's clamp of FIG. 12 in an unapplied state;

FIG. 15 is a schematic view of another double-sided camshaft for a woodworking fixture as provided in another embodiment of the present application;

FIG. 16 is a schematic structural view of a carpentry clamp according to another embodiment of the present application;

FIG. 17 is a schematic structural view of a carpentry clamp according to another embodiment of the present application;

FIG. 18 is a schematic view of another double-sided camshaft for a woodworking fixture as provided in another embodiment of the present application;

fig. 19 is a schematic exploded view of the carpentry clamp shown in fig. 16.

Detailed Description

The technical contents of the preferred embodiments of the present application will be more clearly and easily understood by referring to the drawings attached to the specification. The present application may be embodied in many different forms of embodiments and the scope of the present application is not limited to only the embodiments set forth herein.

In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the size and thickness of each component are not limited in the present application. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.

As shown in fig. 1, which is a schematic structural diagram of a carpentry clamp according to an embodiment of the present disclosure, the carpentry clamp includes a profile clamp body 1, a first chuck 2, a second chuck 2 'and a movable chuck 3, wherein the profile clamp body 1 is provided with a groove-shaped rail 5 along a long axis thereof, for example, the profile clamp body 1 is provided with groove-shaped rails 5 along two sides of the long axis thereof, the first chuck 2 and the second chuck 2' are respectively located at two ends of the profile clamp body 1 and serve as stoppers at two ends of the groove-shaped rail 5, and the movable chuck 3 can slide back and forth along the groove-shaped rail 5 and can be movably fixed with the groove-shaped rail 5.

In another embodiment of this application, for can be used for centre gripping jumbo size work piece can reduce the length that carpenter's anchor clamps occupy when not using again, section bar clamp 1 can include two branch clamps that can split and connect the connecting piece 4 of these two branch clamps, two branch clamps can peg graft each other and overlap or coincide partly, when carpenter's anchor clamps need handle section bar length longer, can with at least one of them of two branch clamps is followed behind the tensile corresponding work piece size that is applicable to of section bar clamp 1 major axis direction, two branch clamps rethreads the connecting piece is fixed, connecting piece 4 can be rivet, screw or bolt to can satisfy the demand of different length section bars.

In another embodiment of the present application, at least one of said first 2 and second 2' jaws is movably fixed to said profiled clamp body 1, for example by means of screws or bolts.

In another embodiment of the present application, at least one of said first and second jaws 2, 2' is a fixed jaw, for example fixed to said profile clamp body 1 by means of bolts, screws or welding.

In another embodiment of the present application, when a workpiece is placed on the profile clamp body 1, the movable clamp 3 can be pushed to slide along the grooved rail 5 and clamp the workpiece between one of the first clamp 2 and the second clamp 2' and the movable clamp 3, and then the movable clamp 3 is fixed to the profile clamp body 1, and after the fixation, an operator can process the workpiece.

In another embodiment of the present application, two movable chucks 3 are provided, and respectively form a structure for clamping a workpiece with the first chuck 2 and the second chuck 2', and the two movable chucks 3 have the same structure, and for convenience of description, the following embodiment will be exemplified by taking one movable chuck 3 as an example.

Therefore, because the carpenter's clamp of this embodiment has set up movable chuck 3 with channel type track 5, consequently, this carpenter's clamp can the centre gripping work piece of different size dimensions, can be simultaneously at two work pieces of both ends centre gripping, easy operation is convenient.

In another embodiment of the present application, the structure of the movable clamp 3 of the carpentry clamp may be as shown in fig. 2, which is a schematic view of a disassembled structure of the movable clamp of the carpentry clamp shown in fig. 1.

The movable chuck 3 comprises a clamping block fixing frame 31, a first movable clamping block 32, a second movable clamping block 32 ', a first clamping block cushion block 33, a second clamping block cushion block 33', a force application device 34, a cam shaft 35 and a locking block 36, wherein the force application device 34 comprises a handle 340, a shaft 341 and a fixing part 342.

The section bar clamp body 1 is in a long strip shape, the long strip direction of the section bar clamp body 1 is the long axis of the section bar clamp body 1, the section bar clamp body 1 is provided with the groove-shaped rails 5 protruding upwards along the two sides of the long axis of the section bar clamp body 1, namely, the long axis of the section bar clamp body 1 is parallel to the groove-shaped rails 5, and the long axis of the section bar clamp body 1 can also be called as the edge of the groove-shaped rails 5.

In another embodiment of the present application, the movable chuck 3 has a limiting rib, and the force applying device 34 has a limiting groove matched with the limiting rib, so that the force applying device 34 rotates to a preset position.

In another embodiment of the present application, the channel rail 5 is in the shape of a T or an inverted L, for example, the profile clamp 1 is integrally formed with the channel rail 5.

The first movable clamping block 32 and the second movable clamping block 32' are respectively connected to two ends of the clamping block fixing frame 31 along the long axis of the section bar clamp body 1; the first clamping block cushion block 33 and the second clamping block cushion block 33 'are respectively connected to the outermost ends of the first movable clamping block 32 and the second movable clamping block 32' along the long axis of the section bar clamp body 1; the first movable clamping block 32, the second movable clamping block 32 ', the first clamping block cushion block 33 and the second clamping block cushion block 33' are connected and then placed on the groove-shaped rail 5 of the section bar clamp body 1 together, and can slide back and forth along the groove-shaped rail 5 together.

The upper surface of lock piece 36 is for pressing from both sides tight push surface 361, lock piece 36 is arranged in the lower surface of clamp piece mount 31 and can with the upper surface contact of section bar clamp 1, camshaft 35 set up in clamp piece mount 31 and arrange in on lock piece 36, just the central axis of camshaft 35 perpendicular to cell type track 5, force application device 34 connects camshaft 35 and can center on the rotatory drive of the central axis of camshaft 35 rotates, works as camshaft 35 is rotatory to make its cam part press in the upper surface of lock piece 36, makes lock piece 36 compress tightly the upper surface of section bar clamp 1, makes movable chuck 3 be fixed in the upper surface of section bar clamp 1.

As can be seen from the above description, when the movable chuck 3 is fixed on the upper surface of the profile clamp body 1, the force applied to the force applying device 34 is always parallel to the groove-shaped rail 5, so that there is no problem that the workpiece may deviate from the linear direction of the guide rail, the problem of clamping deflection can be avoided, and the movable chuck 3 is more firmly fixed on the upper surface of the profile clamp body 1.

The structure of the clamping block fixing frame 31 may be as shown in fig. 3, which is a schematic structural view of the clamping block fixing frame of the carpentry clamp shown in fig. 2, wherein sliding grooves 311 matched with the groove-shaped rails 5 are arranged on the lower surface of the clamping block fixing frame 31 along two sides of the long axis of the profile clamp body 1, for example, sliding plates 310 are arranged on the lower surface of the clamping block fixing frame 31 along two ends of the long axis of the profile clamp body 1, and the sliding plates 310 respectively form the sliding grooves 311 upwards along two sides of the long axis of the profile clamp body 1. The two slotted holes 312 are formed in the clamping block fixing frame 31 along the two ends of the long axis of the section bar clamp body 1, and the fixing holes 313 are respectively formed in the clamping block fixing frame 31 along the two side faces of the long axis of the section bar clamp body 1, namely, the connecting line of the two fixing holes 313 is perpendicular to the long axis of the section bar clamp body 1.

The first movable clamping block 32 and the second movable clamping block 32 'have the same structure, the first clamping block cushion block 33 and the second clamping block cushion block 33' have the same structure, the combination manner of the first movable clamping block 32 and the first clamping block cushion block 33 is the same as the combination manner of the second movable clamping block 32 'and the second clamping block cushion block 33', and for brevity of description, the structures of the first movable clamping block 32 and the first clamping block cushion block 33 and the combination manner thereof are taken as examples for description.

Referring to fig. 4 and 5, which are schematic structural views of the carpentry clamp shown in fig. 2, the first movable clamping block and the first clamping block pad are in two different directions, one end of the first movable clamping block 32 is engaged with the first clamping block pad 33 by a snap, and the other end of the first movable clamping block 32 is engaged with the clamping block fixing frame 31, for example, the other end of the first movable clamping block 32 is inserted into the slot 312 at one end of the clamping block fixing frame 31 and is fixedly engaged with the slot 312, for example, by pressing.

The end side surface of the first movable clamping block 32 connected with the clamping block fixing frame 31 is a clamping block pushing surface 322, and a limiting convex rib 323 is arranged at the joint of the first movable clamping block 32 and the first clamping block cushion block 33.

The lower surface of the first movable clamping block 32 is provided with sliding grooves 321 along two sides of the long axis of the profile clamp body 1, the sliding grooves 321 are matched with the groove-shaped rails 5, the structure and the forming mode of the sliding grooves 321 are the same as those of the sliding grooves 311 on the lower surface of the clamping block fixing frame 31, and details are not repeated here.

The force applying means 34 includes a handle 340, a shaft 341 and a fixing member 342, wherein the fixing member 342 is a pin, a screw or a bolt, the handle 340 may have an n-shape, an inverted L shape or a straight shape, and the bottom of the handle 340 has a shaft hole matching with the shaft 341. for example, the shaft 341 passes through the central shaft of the cam shaft 35 to be fixed to the cam shaft 35 and then to be fixed to the handle 340. for example, the shaft 341 is a non-circular shaft, for example, the shaft 341 and the shaft hole have a quadrangular cross section, for example, a square shape.

The cam shaft 35 may be a non-circular axle having at least one cam, such as one, two or three cams, the top end of which has a locating surface that mates with a surface of the lock block 36, e.g., the locating surface and the surface of the lock block 36 are in mating wavy shapes. In the present embodiment, the camshaft 35 is described by taking two cams as an example, that is, the camshaft 35 is a dual camshaft, the structure of the camshaft 35 may be as shown in fig. 6 and 7, the camshaft 35 is a dual camshaft 35, the middle of the camshaft 35 is a first cam 35A, two sides of the camshaft 35 are second cams 35B, the first cam 35A is higher than the second cams 35B, the top end of the first cam 35A has a positioning surface 35A1, and the positioning surface 35A1 may also be an arc-shaped positioning surface.

The combination structure of the movable clamp 3 and the profile clamp body 1 can be as shown in fig. 8-10, and as described below mainly in connection with fig. 2.

The first movable clamping block 32 and the second movable clamping block 32' are respectively connected to two ends of the clamping block fixing frame 31 along the long axis of the section bar clamp body 1, for example, are inserted into two slot holes 312 along two ends of the long axis of the section bar clamp body 1; the first clamping block cushion block 33 and the second clamping block cushion block 33 'are respectively clamped at the outermost ends of the first movable clamping block 32 and the second movable clamping block 32' along the long axis of the section bar clamp body 1.

The lower surface of the clamping block fixing frame 31 is provided with a concave accommodating groove, and the accommodating groove can accommodate the cam shaft 35. Below the cam shaft 35 is the locking piece 36, the locking piece 36 being placed on the upper surface of the profile clamp body 1.

The central axis of the cam shaft 35 is perpendicular to the long axis of the profile clamp body 1, that is, perpendicular to the groove-shaped track 5, the handle 340 of the force application device 34 is disposed on one side or both sides along the central axis of the cam shaft 35, the handle 340 of the force application device 34 firstly passes through the shaft hole at the bottom of the handle 340 along the central axis of the cam shaft 35, then passes through the fixing holes 313 on both sides of the clamp block fixing frame 31 along the long axis of the profile clamp body 1, and then fixes the force application device 34 on the clamp block fixing frame 31 through the fixing piece 342 of the force application device 34.

The first movable clamping block 32 and the second movable clamping block 32 'are inserted into the end side surface of the slot of the clamping block fixing frame 31 is a clamping block pushing surface, the surface of the first cam 35A can be respectively contacted with the clamping block pushing surfaces of the first movable clamping block 32 and the second movable clamping block 32', the surface of the second cam 35B is contacted with the upper surface of the locking block 36, the two ends of the rotating shaft 341 are fixedly connected with the force application device 34 through the fixing part 342, the surface of the force application device 34 is fixed and provided with a limiting groove 344, and the two limiting grooves 344 are symmetrically distributed by taking the axis of the force application device 34 as the center.

The first cam 35A is respectively contacted with the clamping block pushing surfaces of the first movable clamping block 32 and the second movable clamping block 32 ', so that the first movable clamping block 32 or the second movable clamping block 32' is pushed to move.

The second cam 35B is arranged on two sides of the cam shaft 35, and in the rotating process of the cam shaft 35, the second cam 35B contacts with the locking block 36 to further compress the locking block 36, so that the first movable clamping block 32 and the second movable clamping block 32' are positioned.

In another embodiment of the present application, as shown in fig. 11, a locking washer 37 is further disposed at the bottom of the locking block 36, which effectively increases the friction between the locking block 36 and the upper surface of the profile clamp body 1.

For example, the lower surface of the clamping block fixing frame 31 is slidably connected with the locking block 36, the upper surface of the locking block 36 extends into the clamping block fixing frame 3, both sides of the locking block 36 are slidably connected with the groove-shaped rail 5 of the section clamp body 1, the lower surface of the locking block 36 is fixedly connected with the locking gasket 37, the lower surface of the locking gasket 37 is slidably connected with the upper surface of the section clamp body 1, both ends of the clamping block fixing frame 31 are slidably connected with the first movable clamping block 32 and the second movable clamping block 32 ', for example, the first movable clamping block 32 or the second movable clamping block 32 ' are symmetrically distributed by taking the axis of the clamping block fixing frame 31 as the center, the surfaces of the first movable clamping block 32 and the second movable clamping block 32 ' and the surface of the clamping block fixing frame 31 are provided with sliding grooves, and the sliding grooves are adapted to the groove-shaped rail 5 on the surface of the section clamp body 1, the surfaces of the first movable clamping block 32 and the second movable clamping block 32 ' are respectively clamped with the first clamping block cushion block 33 and the second clamping block cushion block 33 ', the surfaces of the first movable clamping block 32 and the second movable clamping block 32 ' are fixedly connected with a limiting convex rib 323, the limiting convex rib 323 can block the surface of the clamping block fixing frame 31 and the handle 340, namely, the limiting convex rib 323 is matched with the limiting groove 344 to limit the handle 340.

The camshaft 35 is driven to rotate by the rotating shaft 341, and the rotating shaft 341 is connected with the force application device 34, that is, the rotation of the camshaft 35 is realized by pulling the force application device 34, so as to push the first movable clamping block 32 or the second movable clamping block 32 ', and realize the clamping of the workpiece between the first chuck 2 and the first movable clamping block 32, or the clamping of the workpiece between the second chuck 2 ' and the second movable clamping block 32 '.

In another embodiment of the present application, the first cam 35A of the cam shaft 35 has a positioning surface 35A1, which when rotated to the proper position, the positioning surface 35A1 is positioned to cooperate with the clamping push surface 361 of the locking piece 36, for example, the positioning surface 35A1 and the clamping push surface 361 are mutually engaged arc-shaped positioning surfaces.

In another embodiment of the present application, as shown in fig. 2, the side edges of the first movable clamping block 32 and the second movable clamping block 32' are respectively provided with a limiting convex rib 323, the limiting convex rib 323 is matched with the limiting groove 344 of the force applying device 34, when the force applying device 34 is pulled to a certain position, the limiting groove 344 is matched with the limiting convex rib 323, so that the force applying device 34 is positioned, the over-rotation condition is not likely to occur, the force applying device 34 is convenient to maintain a certain height from the upper surface of the profile clamp body 1, and the force applying device 34 is convenient to hold by hand.

Moreover, a workpiece can be clamped between the first chuck 2 and the first movable clamping block 32, another workpiece can be clamped between the second chuck 2 'and the second movable clamping block 32', and workpiece clamping can be realized on two sides.

The movable chuck is pressed on the surface of the section clamp body 1 through a force application device 34, so that the movable chuck 3 is positioned more stably.

Furthermore, after the operator puts the workpiece in place, the operator only needs to push the handle 340 of the force application device 34 to clamp the workpiece, so the operation is simple and convenient.

In another embodiment of the present application, at least one of the first chuck 2 and the second chuck 2' may be a movable chuck, for example, as shown in fig. 12 to 14, the first chuck 2 is exemplified as a movable chuck.

The first clamping head 2 and the second clamping head 2 'are located at two ends of the profile clamp body 1 along the long axis, for example, symmetrically distributed, the first clamping head 2 is a variable clamping head, the first clamping head 2 can be movably positioned on the profile clamp body 1, the positioning can be fixing by a connecting piece 21 or other button type fixing, and the second clamping head 2' is fixedly connected with the profile clamp body 1 through a screw or welding.

For example, corresponding to the first clamping head 2, a plurality of connecting holes 11 distributed along the long axis of the profile clamping body 1 are arranged on the profile clamping body 1, and when the first clamping head 2 moves to a preset position, the connecting piece 21 fixes the first clamping head 2 at the connecting hole 11 corresponding to the position, that is, the first clamping head 2 is fixed at the preset position of the profile clamping body 1.

In another embodiment of the present application, the connecting member 21 may be a screw or a bolt.

The other configurations of the woodworking fixture shown in fig. 12-14 are substantially the same as those of the woodworking fixture described in fig. 1-8, and will not be described again.

In another embodiment of the present application, the first cam 35A of the camshaft 35 may further have two positioning surfaces, for example, as shown in fig. 15, the first cam 35A has a first positioning surface 351 and a second positioning surface 352, the first positioning surface 351 and the second positioning surface 352 may be wave-shaped or arc-shaped positioning surfaces, and the structure and function of the first positioning surface 351 and the second positioning surface 352 are the same as those of the positioning surface 35A1 of the first cam 35A described in fig. 1 to 8, and thus, the description thereof is omitted.

Correspondingly, the upper surface of the locking piece 36 also has a clamping push surface 361 matching with the positioning surfaces of the first positioning surface 351 and the second positioning surface 352, and the clamping push surface 361 is a wave-shaped or arc-shaped surface.

In another embodiment of the application, the groove track 5 is combined with any sliding groove by a snap-in combination and can slide along the groove track 5, for example, the groove track 5 has barbs facing the upper surface of the profile clamp body 1 or flanges parallel to the upper surface of the profile clamp body 1, the sliding groove has a concave groove, and the barbs and flanges of the groove track 5 can be snapped into the concave groove of the sliding groove.

When a workpiece is placed on the upper surface of the profile clamp body 1, the first movable clamping block 32 is moved to clamp the workpiece with the first chuck 2 at the end of the profile clamp body 1, the handle 340 is pushed to rotate along the central axis of the cam shaft 35 along the long axis direction of the profile clamp body 1, the handle 340 drives the cam shaft 35 to rotate through the shaft 341 of the cam shaft 35, the second cam 35B of the cam shaft 35 first presses the first movable clamping block 32 to press the workpiece between the first chuck 2 and the first movable clamping block 32, and then presses the locking block 36 on the upper surface of the profile clamp body 1 through the first cam 35A, so that the movable chuck 3 is fixed on the upper surface of the profile clamp body 1.

In another embodiment of the present application, as shown in fig. 16-17, which is a schematic structural view of a carpenter's clamp according to another embodiment of the present application, the carpenter's clamp includes a profile clamp body 40 and two separate movable jaws located on an upper surface of the profile clamp body 40, wherein the two separate movable jaws include a first movable jaw 41 and a second movable jaw 42.

The first movable chuck 41 and the second movable chuck 42 have the same equivalent structure, for example, the first movable chuck 41 includes a first cam shaft 13C, a first handle 1401, a third movable chuck 411 and a third chuck block 412, and the second movable chuck 42 includes a second cam shaft 13D, a second handle 1402, a fourth movable chuck 413 and a fourth chuck block 414. The first handle 1401 of the first movable chuck 41 and the second handle 1402 of the second movable chuck 42 constitute the force applying device.

The profile clamp body 40 has runner rails 45 along both sides of its long axis.

The first cam shaft 13C and the third movable clamping block 411 are inserted and fixed along the long axis of the profile clamp body 40, and the third clamping block spacer 412 and one end of the third movable clamping block 411 along the long axis of the profile clamp body 40 are clamped and combined. The lower surfaces of the first cam shaft 13C and the third movable clamping block 411 are provided with sliding grooves which are matched with the sliding groove tracks 45 of the section clamping body 40, and the specific structure of the sliding grooves is the same as that of the sliding grooves described in the embodiment of fig. 1 to 8, and is not described again here.

The second cam shaft 13D and the fourth movable clamping block 413 are inserted and fixed along the long axis of the profile clamp body 40, and the fourth clamping block pad 414 is engaged and combined with the fourth movable clamping block 413 along the outer side end of the long axis of the profile clamp body 40. The lower surfaces of the second cam shaft 13D and the fourth movable clamping block 413 are provided with sliding grooves matched with the sliding groove tracks 45 of the section clamping body 40, and the specific structure of the sliding grooves is the same as that of the sliding grooves described in the foregoing embodiments of fig. 1 to 8, and is not described again here.

As shown in fig. 18, the first camshaft 13C and the second camshaft 13D have equivalent identical structures, and their structures may be identical to those of the camshaft 35 described in the foregoing embodiment.

As shown in fig. 19, in combination with fig. 16 and 17, the first handle 1401 may be n-shaped or inverted L-shaped or straight, and the first handle 1401 is connected to one side or two sides of the central axis of the first cam shaft 13C, wherein the central axis of the first cam shaft 13C is perpendicular to the long axis of the profile clamp body 40.

For example, as shown in fig. 19, the coupling of the first camshaft 13C to the profile clamp body 40 is identical to the coupling of the camshaft 35 to the profile clamp body 1 described in the previous embodiments of fig. 1 to 8.

For example, a first locking block 153 is disposed below the first camshaft 13C, a lower surface of the first locking block 153 is in sliding contact with an upper surface of the profile clamp body 40, a surface of the first camshaft 13C is in contact with an upper surface of the first locking block 153, and during rotation of the first camshaft 13C, a cam of the first camshaft 13C is in contact with the first locking block 153 to press the first locking block 153, so as to position the first movable clamp 41.

In another embodiment of the present application, as shown in fig. 19, a lock washer 154 is further provided at the bottom of the first lock block 153, which effectively increases the friction between the first lock block 153 and the upper surface of the profile clamp body 40.

For example, the first locking block 153 is slidably connected to the surface of the first cam shaft 13C, the upper surface of the first locking block 153 extends into the first cam shaft 13C, both sides of the first locking block 153 are slidably connected to the profile clamp body 40, the lower surface of the first locking block 153 is fixedly connected to the locking washer 154, and the lower surface of the locking washer 154 is in sliding contact with the surface of the profile clamp body 40.

The lower surfaces of the first cam shaft 13C and the third movable clamping block 411 are respectively provided with a sliding groove 1301 matched with the sliding groove track 45 of the profile clamping body 40, the sliding grooves 1301 are matched with the groove track 45 on the surface of the profile clamping body 40, the first cam shaft 13C is connected with the third movable clamping block 411 in a clamping mode, the surface of the third movable clamping block 411 is fixedly connected with a limiting convex rib, and the limiting convex rib can block the surface of the first cam shaft 13C and the first handle 1401, namely, the first handle 1401 is limited.

The first handle 1401 is fixedly connected to the first pin 1201, for example, the first handle 1401 is fixedly connected to the first pin 1201 through a bolt. The surface of the first pin 1201 is convex, and the surface of the first pin 1201 is sleeved with the surface of a protruding shaft at one end of the first cam shaft 13C.

In another embodiment of the present application, the bottom of the first handle 1401 has a shaft hole to be fitted with the shaft of the first cam shaft 13C. The shaft of the first camshaft 13C is a non-circular shaft, for example, both the shaft of the first camshaft 13C and the shaft hole have a quadrangular cross section, for example, a square cross section. The shaft of the first cam shaft 13C may pass through the bottom shaft hole of the first handle 1401, and the first handle 1401 and the shaft of the first cam shaft 13C may be fixed by a fixing member, which may be a screw or a bolt. In another embodiment of the present application, a spacer may be sleeved on the shaft of the first cam shaft 13C, and then the first handle 1401 and the shaft of the first cam shaft 13C may be fixed by the fixing member.

When a workpiece is placed on the upper surface of the profile clamp body 40, the first movable clamp 41 is moved to clamp the workpiece and a clamp at the end of the profile clamp body 40, the first handle 1401 is pushed along the long axis direction of the profile clamp body 40 to rotate along the central axis of the first cam shaft 13C, the first cam shaft 13C is driven by the first handle 1401 through the first pin 1201 or the shaft of the first cam shaft 13C to rotate, the cam of the first cam shaft 13C first presses the third movable clamp 411 to press the workpiece between the clamp at the end of the profile clamp body 40 and the third movable clamp 411, and then presses the first locking block 153 on the upper surface of the profile clamp body 40, so that the first movable clamp 41 is fixed on the upper surface of the profile clamp body 40.

As shown in fig. 19, with reference to fig. 16 and 17, the second handle 1402 may be n-shaped, or inverted L-shaped, or straight, and the second handle 1402 is connected to one side or both sides of the central axis of the second cam shaft 13D, wherein the central axis of the second cam shaft 13D is perpendicular to the long axis of the profiled clamp body 40.

For example, as shown in fig. 19, the coupling of the second camshaft 13D to the profile clamp body 40 is identical to the coupling of the camshaft 35 to the profile clamp body 1 described in the previous embodiments of fig. 1 to 8.

The first camshaft 13C and the second camshaft 13D have the same structure, a first cam is arranged in the middle of the first camshaft 13C and the second camshaft 13D, second cams are arranged on two sides of the first camshaft 13C and the second camshaft 13D, and the first cam is higher than the second cams; a surface of a first cam of the first cam shaft 13C is in contact with an upper surface of the first locking block 153, and a surface of a second cam of the first cam shaft 13C is in contact with a block pushing surface of the third movable block 411; the surface of the first cam of the second cam shaft 13D contacts the upper surface of the second locking block, and the surface of the second cam shaft 13D contacts the block pushing surface of the fourth movable block 413.

For example, the surface of the second cam shaft 13D contacts the upper surface of the second locking block 153 ', and during the rotation of the second cam shaft 13D, the cam of the second cam shaft 13D contacts the second locking block 153 ' to press the second locking block 153 ', so as to position the first movable clamp 41.

In another embodiment of the present application, a lock washer is further disposed at the bottom of the second locking block 153 ', which effectively increases the friction between the second locking block 153' and the upper surface of the profile clamp body 40.

For example, the surface of the second cam shaft 13D is slidably connected to the second locking block 153 ', the upper surface of the second locking block 153' extends into the second cam shaft 13D, both sides of the second locking block 153 'are slidably connected to the profile clamp body 40, the lower surface of the second locking block 153' is fixedly connected to the locking washer, and the surface of the locking washer is slidably connected to the surface of the profile clamp body 40.

The second camshaft 13D with the lower surface of fourth activity clamp splice 413 all have with the spout track 45 matched with spout 1301 of section bar clamp body 40, spout 1301 with the groove track 45 looks adaptation on section bar clamp body 40 surface, second camshaft 13D joint fourth activity clamp splice 413, the fixed surface of fourth activity clamp splice 413 is connected with spacing protruding muscle, spacing protruding muscle both can block second camshaft 13D's surface, can block again second handle 1402, it is right promptly second handle 1402 carries on spacingly.

In another embodiment of the present application, the groove-shaped track 45 is combined with the sliding groove 1301 by a snap-in combination and can slide along the groove-shaped track 45, for example, the groove-shaped track 45 has a barb facing the upper surface of the profile clamp body 40 or a flange parallel to the upper surface of the profile clamp body 40, the sliding groove 1301 has a concave groove, and the barb and the flange of the groove-shaped track 45 can be snapped into the concave groove of the sliding groove 1301.

The second handle 1402 is fixedly connected to the second pin 1202, for example, the second handle 1402 is fixedly connected to the second pin 1202 by a bolt. The surface of the second pin 1202 is convex, and the surface of the second pin 1202 is sleeved with the surface of a protruding shaft at one end of the second cam shaft 13D.

In another embodiment of the present application, the bottom of the second handle 1402 has a shaft hole that mates with the shaft of the second cam shaft 13D. The shaft of the second camshaft 13D is a non-circular shaft, for example, both the shaft and the shaft hole of the second camshaft 13D are quadrangular in cross section, for example, square. The shaft of the second cam shaft 13D may pass through the bottom shaft hole of the second handle 1402, and the second handle 1402 and the shaft of the second cam shaft 13D may be fixed by a fixing member, which may be a screw or a bolt. In another embodiment of the present application, a spacer may be sleeved on the shaft of the second cam shaft 13D, and then the second handle 1402 and the shaft of the second cam shaft 13D may be fixed by the fixing member.

When a workpiece is placed on the upper surface of the profile clamp body 40, the first movable chuck 41 is moved to clamp the workpiece and the chuck at the end of the profile clamp body 40 to the workpiece, the second handle 1402 is pushed to rotate along the central axis of the second cam shaft 13D along the long axis direction of the profile clamp body 40, the second cam shaft 13D is driven to rotate by the second pin 1202 or the shaft of the second cam shaft 13D, the cam of the second cam shaft 13D first presses the fourth movable chuck 413 to press the workpiece between the chuck at the end of the profile clamp body 40 and the fourth movable chuck 413, and then presses the second locking block 153' on the upper surface of the profile clamp body 40, so that the first movable chuck 41 is fixed on the upper surface of the profile clamp body 40.

The foregoing detailed description of the preferred embodiments of the present application. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the concepts of the present application should be within the scope of protection defined by the claims.

Claims

1. A woodworking fixture comprises a fixture body, a first chuck and a second chuck, wherein the first chuck and the second chuck are respectively positioned at two ends of the fixture body along the long axis of the fixture body;

it is characterized in that the preparation method is characterized in that,

the woodworking fixture further comprises at least one movable chuck, and the at least one movable chuck is connected to the clamp body in a sliding mode;

a locking block is arranged between the movable chuck and the clamp body and is in sliding connection with the clamp body;

the movable chuck comprises a force application device and a cam shaft, the cam shaft is provided with at least one cam, the force application device is connected with the cam shaft, the force application device can drive the cam shaft to rotate along the central shaft of the cam shaft so as to enable the cam of the cam shaft to be tightly pressed on the locking block, the movable chuck is tightly pressed and positioned on the clamp body through the locking block, and the central shaft of the cam shaft is perpendicular to the long shaft of the clamp body.

2. The woodworking fixture of claim 1, wherein at least one of the first jaw and the second jaw is movably coupled to the clamp body.

3. The woodworking fixture of claim 2, wherein the woodworking fixture further comprises at least one connector, the clamp body is provided with a plurality of connecting holes distributed along a long axis of the clamp body, and when the first clamp and/or the second clamp move to a predetermined position, the connector fixes the first clamp and/or the second clamp at the predetermined position through the connecting holes.

4. The woodworking fixture of claim 1, wherein the clamp body is provided with a slotted track along a long axis of the clamp body, the movable clamp head is provided with a sliding slot matched with the slotted track, and the movable clamp head can slide back and forth on the clamp body through the slotted track and the sliding slot.

5. The woodworking fixture of claim 1, wherein the movable clamp further comprises a clamp block holder, a first movable clamp block, and a second movable clamp block;

the clamping block fixing frame is provided with slotted holes along two ends of a long shaft of the clamping body respectively, and the first movable clamping block and the second movable clamping block are inserted into the slotted holes at two ends of the clamping block fixing frame respectively.

6. The woodworking fixture of claim 5, wherein the clamp body is provided with a grooved rail along a long axis of the clamp body, and the first movable clamping block and the second movable clamping block are provided with sliding grooves matched with the grooved rail.

7. The woodworking fixture of claim 5, wherein the cam shaft has a first cam in the middle and a second cam on either side, the first cam being higher than the second cam;

the first cam is in contact with the locking block, and the second cam is in contact with the first movable clamping block and the second movable clamping block respectively.

8. The woodworking fixture of claim 7, wherein the clamp body is provided with a grooved rail along a long axis of the clamp body, and the first clamp block pad and the second clamp block pad are provided with sliding grooves which are matched with the grooved rail.

9. The woodworking fixture of claim 5, wherein the first movable clamping block and the second movable clamping block are provided with limiting ribs for respectively limiting the first movable clamping block and the second movable clamping block from being completely inserted into the slot holes of the clamping block fixing frame.

10. The woodworking fixture of claim 1, wherein the movable clamp has a stop rib, and the force applying device has a stop groove that engages the stop rib, such that the force applying device rotates to a predetermined position.

11. The woodworking fixture of claim 1, wherein the locking block is fixedly connected to a locking washer, and the locking washer is slidably connected to the clamp body.

12. The woodworking fixture of claim 1, wherein the clamp body comprises two separable sub-clamp bodies and a connector connecting the two sub-clamp bodies, and the two sub-clamp bodies can be inserted into each other and overlapped or overlapped by a part.

13. The woodworking fixture of claim 1, wherein the at least one movable jaw comprises first and second spaced movable jaws;

a first locking block is arranged below the first cam shaft and is in sliding contact with the clamp body;

and a second locking block is arranged below the second camshaft and is in sliding contact with the clamp body.

14. The woodworking fixture of claim 13, wherein the first and second locking blocks are each fixedly connected to a locking washer, and wherein the two locking washers are in sliding contact with the clamp body.

15. The woodworking fixture of claim 13, wherein a third clamp block is engaged with the third movable clamp block along an outer side end of the long axis of the clamp body, a fourth clamp block is engaged with the fourth movable clamp block along an outer side end of the long axis of the clamp body, and limiting ribs are fixedly connected to surfaces of the third movable clamp block and the fourth movable clamp block respectively.

16. The woodworking fixture of claim 13, wherein the clamp body has runner rails on both sides of its long axis, the first cam shaft and the third movable clamp block each have runners that mate with the runner rails of the clamp body, and the second cam shaft and the fourth movable clamp block each have runners that mate with the runner rails of the clamp body.