CN212286738U - Clamp capable of positioning multiple workpieces at one time - Google Patents

Abstract

The utility model discloses a can once fix a position anchor clamps of a plurality of work pieces, it includes: a base having a workpiece bearing surface; the positioning mechanism comprises a fixed positioning strip, a movable positioning strip and a driving mechanism for driving the movable positioning strip to act, the fixed positioning strip and the movable positioning strip are respectively positioned at the left side and the right side of the workpiece bearing surface, the fixed positioning strip is fixedly arranged on the base, and the driving mechanism is arranged on the base and is used for driving the movable positioning strip to be close to the fixed positioning strip; and the clamping mechanism is arranged on the base and used for clamping and fixing the workpiece on the workpiece bearing surface. The clamp can position a plurality of workpieces at one time, and the efficiency of part machining is improved.

Description

Clamp capable of positioning multiple workpieces at one time

Technical Field

The utility model relates to a processing equipment's accessory, especially can once fix a position the anchor clamps of a plurality of work pieces.

Background

The existing guide rail part is provided with a guide rail groove with two open ends, and the groove wall of the guide rail groove needs to be subjected to finish machining. In the existing machining process, when the guide rail part is fixed, the guide rail part is mainly fixed on a machining table of machining equipment through the matching of a pressing plate and a threaded fastener, and the efficiency of part machining is influenced when one part is machined and needs to be positioned, assembled and disassembled once.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a can once fix a position the anchor clamps of a plurality of work pieces, can once fix a position a plurality of work pieces, improve machining efficiency.

According to the utility model discloses can once fix a position anchor clamps of a plurality of work pieces, it includes: a base having a workpiece bearing surface; the positioning mechanism comprises a fixed positioning strip, a movable positioning strip and a driving mechanism for driving the movable positioning strip to act, the fixed positioning strip and the movable positioning strip are respectively positioned on the left side and the right side of the workpiece bearing surface, the fixed positioning strip is fixedly arranged on the base, and the driving mechanism is arranged on the base and is used for driving the movable positioning strip to be close to the fixed positioning strip; and the clamping mechanism is arranged on the base and is used for clamping and fixing the workpiece on the workpiece bearing surface.

According to the utility model discloses can once fix a position anchor clamps of a plurality of work pieces, have following beneficial effect at least: when the clamp is used, the base is fixed on a processing table top of processing equipment. When the guide rail parts are machined, the guide rail parts are arranged on the workpiece bearing surface and are arranged in a row, the guide rail grooves of the guide rail parts are arranged in a straight line, the same side of the guide rail parts is close to the fixed positioning strip, the movable positioning strip is driven by the driving mechanism to be close to the fixed positioning strip, the fixed positioning strip and the movable positioning strip are clamped into the guide rail parts in a row, so that the guide rail parts in the row are positioned, the positioned guide rail parts are fixed by the clamping mechanism, and then finish machining of the guide rail grooves can be started. The clamp can position a plurality of workpieces at one time, and the efficiency of part machining is improved.

According to some embodiments of the invention, the drive mechanism comprises a drive rack, an adjustment lever and a drive handle; the driving frame is movably connected to the base and can move left and right relative to the base, the driving frame is located on one side, away from the fixed positioning strip, of the movable positioning strip, the adjusting rod is arranged in the left-right direction, the left end of the adjusting rod is connected to the base, threads are arranged on the adjusting rod, the driving handle is connected to the adjusting rod in a threaded mode, a sleeving connection portion is arranged on the driving frame, and the sleeving connection portion is sleeved on the adjusting rod and located between the base and the driving handle. The driving mechanism with the structure has simple structure and is easy to implement.

According to some embodiments of the utility model, cup joint the portion with be provided with between the base with cup joint the portion top to actuating handle's reset spring. When the driving handle is loosened, the driving frame can be automatically moved away through the return spring, so that a worker can conveniently detach the workpiece.

According to some embodiments of the present invention, the clamping mechanism comprises clamping components disposed in pairs, the clamping components comprise a pressing bar, a pressing bar seat and a locking handle, the pressing bar seat is connected to the base and respectively located at the left and right sides of the workpiece carrying surface in pairs, the pressing bar seat is respectively disposed at the corresponding pressing bar seat in pairs, the pressing bar is transversely disposed and respectively located at the left and right upper sides of the workpiece carrying surface in pairs, one end opposite to the pressing bar seat is configured as a pressing end and the other end is configured as a control end, the pressing bar can rotate around a predetermined fulcrum relative to the pressing bar seat so that the pressing end of the pressing bar can be close to or away from the workpiece carrying surface, the pressing bar can transversely move relative to the pressing bar seat so that the pressing ends of the pressing bar in pairs can be close to or away from each other, the locking handle is connected to the pressing bar seat or the pressing, the locking handle is used for driving the control end of the pressing strip to be pressed or loosened upwards so that the pressing end presses or loosens the workpiece. Adopt above-mentioned structure to press from both sides tight work piece, press from both sides tightly firmly, simple structure easy to carry out.

According to some embodiments of the utility model, be provided with the ejector pin on the locking handle, the layering be provided with the screw hole on the control end, ejector pin threaded connection in the screw hole, the lower extreme of ejector pin with the layering seat is relative. The locking handle tightly pushes up the control end of the loosening pressing strip through a thread matching mode, the action is reliable and stable, and the loosening is not easy after the locking handle is tightly pushed up.

According to the utility model discloses a some embodiments, be provided with on the layering along the bar hole of self length direction extension, predetermined fulcrum configuration set up in the horizontal axle of layering seat, horizontal axle pierces bar hole and sliding fit with it. The structure realizes the rotation and the transverse movement of the pressing strip, and the structure is simple and easy to implement.

According to some embodiments of the utility model, clamping component sets up many pairs and arranges into two rows along the fore-and-aft direction, and one row clamping component's layering seat is connected in the connecting seat, connecting seat detachably connect in the base. Through dismantling the connecting seat, can wholly change one row on the clamping component to change the clamping component of other adaptation processing part, the commonality is good.

According to the utility model discloses a some embodiments, still be provided with burring positioning mechanism on the base, burring positioning mechanism includes pedestal, two location strip and the tight mechanism in top, the pedestal set up in the base, two the location strip fixed set up in the up end of pedestal, two the location strip sets up perpendicularly mutually, the tight mechanism in top set up in the pedestal and be used for pushing up the part tightly in one the location strip. After the guide rail groove is machined, the guide rail part can be placed on the deburring positioning mechanism to further remove machining burrs, and the functions of the clamp are enriched.

According to the utility model discloses a some embodiments, the tight mechanism in top includes top tight screw and cushion, top tight screw threaded connection in the pedestal, top tight screw's free end orientation one the locating strip, the cushion set up in one side of top tight screw's free end. The jacking mechanism with the structure has the advantages of simple structure, replacement of the cushion block according to requirements and convenience in use.

According to some embodiments of the utility model, positioning mechanism still includes distolateral location strip, distolateral location strip fixed set up in the base, distolateral location strip with the perpendicular setting mutually of fixed position strip. When the guide rail parts are arranged on the workpiece bearing surface, the positions of the guide rail parts in the front-back direction can be positioned through the end side positioning strips, and the arrangement of the workpieces is facilitated.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is an exploded view of an embodiment of the present invention;

FIG. 3 is a block diagram of an embodiment of a base and positioning mechanism;

FIG. 4 is an exploded view of the structure shown in FIG. 3;

FIG. 5 is a partial view of the base;

fig. 6 is a top view of an embodiment of the present invention;

fig. 7 is a cross-sectional view of an embodiment of the invention;

FIG. 8 is a partial block diagram of FIG. 7;

FIG. 9 is a structural view of the clamping mechanism;

fig. 10 is a perspective view of the deburring positioning mechanism.

Reference numerals: the guide rail component 1, the guide rail groove 11, the base 100, the workpiece bearing surface 110, the mounting seat 120, the slide hole 121, the limiting groove 122, the positioning mechanism 200, the fixed positioning bar 210, the movable positioning bar 220, the driving mechanism 230, the driving frame 231, the sleeving part 2311, the adjusting bar 232, the driving handle 233, the return spring 234, the end side positioning bar 240, the clamping mechanism 300, the clamping assembly 310, the pressing bar 311, the threaded hole 3111, the strip-shaped hole 3112, the pressing bar seat 312, the transverse shaft 3121, the locking handle 313, the push rod 3131, the connecting seat 320, the deburring positioning mechanism 400, the seat body 410, the positioning bar 420, the jacking mechanism 430, the jacking screw 431 and the cushion block 432.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 2, a jig capable of positioning a plurality of workpieces at a time includes: a base 100 having a workpiece-carrying surface 110; the positioning mechanism 200 comprises a fixed positioning bar 210, a movable positioning bar 220 and a driving mechanism 230 for driving the movable positioning bar 220 to move, the fixed positioning bar 210 and the movable positioning bar 220 are respectively positioned at the left side and the right side of the workpiece bearing surface 110, the fixed positioning bar 210 is fixedly arranged on the base 100, and the driving mechanism 230 is arranged on the base 100 and used for driving the movable positioning bar 220 to be close to the fixed positioning bar 210; the clamping mechanism 300 is disposed on the base 100 and is used for clamping and fixing the workpiece on the workpiece carrying surface 110. When the jig is used, the base 100 is fixed to a processing table of a processing apparatus. When the guide rail part 1 is machined, the guide rail parts 1 are placed on the workpiece bearing surface 110 and arranged in a row, the guide rail grooves 11 of the guide rail parts 1 are arranged in a straight line, the same side of the guide rail part 1 is close to the fixed positioning bar 210, the movable positioning bar 220 is driven by the driving mechanism 230 to be close to the fixed positioning bar 210, the fixed positioning bar 210 and the movable positioning bar 220 are clamped into the guide rail parts 1 in a row, so that the guide rail parts 1 in the row are positioned, the positioned guide rail parts 1 are fixed by the clamping mechanism 300, and then finish machining of the guide rail grooves 11 can be started. The clamp can position a plurality of workpieces at one time, and the efficiency of part machining is improved.

Referring to fig. 3, 4 and 8, the driving mechanism 230 includes a driving frame 231, an adjusting lever 232 and a driving handle 233; the driving frame 231 is movably connected to the base 100 and can move left and right relative to the base 100, the driving frame 231 is located on one side of the movable positioning strip 220 away from the fixed positioning strip 210, the adjusting rod 232 is arranged along the left-right direction, the left end of the adjusting rod 232 is connected to the base 100, threads are arranged on the adjusting rod 232, the driving handle 233 is connected to the adjusting rod 232 in a threaded mode, a sleeving connection portion 2311 is arranged on the driving frame 231, the sleeving connection portion 2311 is sleeved on the adjusting rod 232, and the sleeving connection portion 2311 is located between the base 100. When the driving handle 233 is rotated, the position of the driving handle 233 on the adjusting rod 232 is changed, so that the driving handle 233 can push the driving rack 231 toward the fixed positioning bar 210, the driving rack 231 can push the movable positioning bar 220 toward the fixed positioning bar 210, and finally the movable positioning bar 220 and the fixed positioning bar 210 clamp the component. When the driving handle 233 is rotated reversely, the movable positioning bar 220 will release the clamping of the parts. In some embodiments, the drive mechanism 230 may also be other structures, such as a screw mechanism. There are many mechanisms in the art for driving movement of a member, not illustrated here.

In this embodiment, the movable positioning bar 220 and the driving frame 231 are separately arranged, so that the movable positioning bar 220 can be replaced at any time to adapt to different processing occasions, and in other embodiments, the movable positioning bar 220 can also be connected with the driving frame 231 or movably connected with the base 100. In the present embodiment, the fixing positioning bar 210 is detachably disposed on the base 100, so that it can be replaced.

Referring to fig. 5, in the present embodiment, the base 100 is provided with the mounting seat 120, the mounting seat 120 has the sliding hole 121 extending in the left-right direction, the sleeve 2311 is slidably connected to the sliding hole 121, and the adjustment rod 232 is coaxially provided to the sliding hole 121. In some embodiments, the driving frame 231 may be movably connected to the base 100 by other structures, such as a sliding slot and a sliding block. There are numerous structures in the art for accomplishing the movable connection of one member relative to another member, not to mention here.

In this embodiment, in order to make the driving frame 231 move smoothly, the mounting seat 120 is provided with a limiting groove 122, the sleeving part 2311 is matched with the limiting groove 122, and the limiting groove 122 limits the rotation of the sleeving part 2311.

Referring to fig. 8, in the present embodiment, a return spring 234 for urging the socket 2311 toward the driving handle 233 is provided between the socket 2311 and the base 100. When the driving handle 233 is rotated to loosen the driving rack 231, the driving rack 231 can be automatically reset by the reset spring 234, thereby facilitating the worker to take off the rail part 1.

Referring to fig. 6 to 7, in the present embodiment, the clamping mechanism 300 includes clamping assemblies 310 arranged in pairs, the clamping assemblies 310 include compression beads 311, the pair of pressure bar seats 312 are connected to the base 100 and located on the left side and the right side of the workpiece bearing surface 110 respectively, the pair of pressure bars 311 are arranged on the corresponding pressure bar seats 312 respectively, the pair of pressure bars 311 are transversely arranged and located on the left upper side and the right upper side of the workpiece bearing surface 110 respectively, one ends, opposite to the pair of pressure bars 311, are configured as compression ends, the other ends are configured as control ends, the pressure bars 311 can rotate around a preset fulcrum relative to the pressure bar seats 312 so that the compression ends of the pressure bars 311 can be close to or far away from the workpiece bearing surface 110, the pressure bars 311 can transversely move relative to the pressure bar seats 312 so that the compression ends of the pair of pressure bars 311 can be close to or far away from each other, the locking handle 313 is connected to the pressure bars 311 or the pressure bar seats 312, and the locking handle 313 is used for driving the control ends. After the guide rail part 1 is arranged on the workpiece bearing surface 110 and positioned, the pressing ends of the paired pressing strips 311 are close to each other and are lapped on the guide rail part 1, specifically, are lapped on the table surfaces at two sides of the guide rail groove 11, the locking handle 313 is rotated, so that the control end of the pressing strip 311 is pressed upwards, the pressing strip 311 can rotate around a preset fulcrum, so that the pressing strip 311 forms a lever, when the control end is pressed upwards, the pressing ends press the guide rail part 1, and the guide rail part 1 is pressed and fixed on the workpiece bearing surface 110. In some embodiments, the clamping mechanism 300 may be other structures, such as some rotary clamping mechanisms 300 or other tooling fixtures. There are many mechanisms in the art that accomplish the clamping of a part, not illustrated here.

Referring to fig. 7 and 9, a push rod 3131 is disposed on the locking handle 313, a threaded hole 3111 is disposed on the control end of the pressing bar 311, the push rod 3131 is screwed into the threaded hole 3111, and the lower end of the push rod 3131 is opposite to the pressing bar seat 312. When the locking handle 313 is rotated, the lower end of the push rod 3131 is pushed against the pressing bar seat 312, and the control end of the pressing bar 311 is pushed upwards due to the mutual action of the forces, so that the pressing end of the pressing bar 311 can press the guide rail part 1 downwards. In some embodiments, the locking handle 313 can also push the control end of the pressing bar 311 upwards through a cam structure or a link structure, so as to realize the effect that the pressing bar 311 presses the guide rail part 1, and the locking handle 313 can be connected to the pressing bar 311 and also connected to the pressing bar seat 312 due to the mutual action of force.

Referring to fig. 9, in the present embodiment, the pressing bar 311 is provided with a strip-shaped hole 3112 extending along the length direction thereof, the predetermined fulcrum is configured as a transverse shaft 3121 provided on the pressing bar base 312, and the transverse shaft 3121 penetrates through the strip-shaped hole 3112 and is slidably engaged therewith. The pressing strip 311 can move laterally through the sliding fit of the lateral shaft 3121 and the strip hole 3112, and the rotation of the pressing strip 311 will form a lever with the lateral shaft 3121 as a predetermined fulcrum. In some embodiments, the pressing bar 311 may be movably connected to the pressing bar seat 312 through other structures, and the pressing bar 311 may be configured to rotate and move laterally around a predetermined pivot, for example, the pressing bar 311 is pivotally connected to a slider, which is a predetermined pivot, and the slider is slidably connected to the pressing bar seat 312 in a laterally movable manner. There are many structures in the art that allow one member to rotate and move relative to another member, and these are not illustrated here.

Referring to fig. 6 and 9, in the present embodiment, the clamping members 310 are provided in a plurality of pairs and arranged in two rows in the front-rear direction, the bead seats 312 of the clamping members 310 in one row are coupled to the coupling seats 320, and the coupling seats 320 are detachably coupled to the base 100. The number of pairs of clamp assemblies 310 can be set according to the number of rail parts 1 on the workpiece bearing surface 110. In the present embodiment, the number of pairs of the clamping assemblies 310 is the same as the number of the rail parts 1, thereby achieving that one rail part 1 is clamped by one pair of the clamping assemblies 310. Of course, in some embodiments, the number of pairs of the clamping assemblies 310 is not limited, and for example, a pair of the clamping assemblies 310 may be provided to clamp two or more rail parts 1, as long as a predetermined number of rail parts 1 are covered by the bead 311 having an appropriate width. Through dismantling connecting seat 320, can wholly change the clamping component 310 on one row to change the clamping component 310 of the adaptation processing part in addition, the commonality of anchor clamps is good. The specific detachable structure can be a threaded fastener connection, a clamping connection or a plug connection and the like.

Referring to fig. 6 and 10, in the present embodiment, a deburring positioning mechanism 400 is further disposed on the base 100, the deburring positioning mechanism 400 includes a base body 410, two positioning strips 420 and a tightening mechanism 430, the base body 410 is disposed on the base 100, the two positioning strips 420 are fixedly disposed on an upper end surface of the base body 410, the two positioning strips 420 are vertically disposed, and the tightening mechanism 430 is disposed on the base body 410 and is configured to tighten a part against one positioning strip 420. After the guide rail groove 11 is finished, the guide rail part 1 may be placed in the deburring positioning mechanism 400, the guide rail part 1 is positioned and fixed by the two positioning bars 420 and the tightening mechanism 430, and then the deburring work is performed.

In this embodiment, the tightening mechanism includes a tightening screw 431 and a pad 432, the tightening screw 431 is screwed to the seat 410, a free end of the tightening screw 431 faces a positioning bar 420, and the pad 432 is disposed on a side of the free end of the tightening screw 431. The guide rail part 1 is placed on the seat body 410, the two positioning strips 420 are used for positioning, the jacking screw 431 is rotated, and the jacking screw 431 jacks the guide rail part 1 on the positioning strips 420 through the cushion block 432. Of course, in some embodiments, the tightening mechanism may be other structures, such as tightening the component directly with the tightening screw 431, or tightening the component with other suitable structures.

Referring to fig. 3, in the present embodiment, the positioning mechanism 200 further includes an end positioning bar 240, the end positioning bar 240 is fixedly disposed on the base 100, and the end positioning bar 240 is disposed perpendicular to the fixed positioning bar 210. When the guide rail parts 1 are arranged on the workpiece mounting surface 110, the front-rear direction positions of the guide rail parts 1 can be positioned by the end positioning bars 240, which is advantageous for aligning the workpieces. Of course, the jig of the present embodiment is mainly for finish machining the rail groove 11, and therefore, it is only necessary to mainly position the rail member 1 in the left-right direction, and the end-side positioning bar 240 is an optional component.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. Can once fix a position anchor clamps of a plurality of work pieces, its characterized in that includes:

a base (100) having a workpiece-carrying surface (110);

the positioning mechanism (200) comprises a fixed positioning strip (210), a movable positioning strip (220) and a driving mechanism (230) for driving the movable positioning strip (220) to act, the fixed positioning strip (210) and the movable positioning strip (220) are respectively positioned at the left side and the right side of the workpiece bearing surface (110), the fixed positioning strip (210) is fixedly arranged on the base (100), and the driving mechanism (230) is arranged on the base (100) and used for driving the movable positioning strip (220) to be close to the fixed positioning strip (210);

the clamping mechanism (300) is arranged on the base (100) and is used for clamping and fixing the workpiece on the workpiece bearing surface (110).

2. The fixture capable of positioning a plurality of workpieces at once of claim 1, wherein: the driving mechanism (230) comprises a driving frame (231), an adjusting rod (232) and a driving handle (233); the driving frame (231) is movably connected to the base (100) and can move left and right relative to the base (100), the driving frame (231) is located on one side, away from the fixed positioning strip (210), of the movable positioning strip (220), the adjusting rod (232) is arranged along the left-right direction, the left end of the adjusting rod is connected to the base (100), threads are arranged on the adjusting rod (232), the driving handle (233) is connected to the adjusting rod (232) in a threaded mode, a sleeving connection portion (2311) is arranged on the driving frame (231), and the sleeving connection portion (2311) is sleeved on the adjusting rod (232) and located between the base (100) and the driving handle (233).

3. The fixture capable of positioning a plurality of workpieces at once of claim 2, wherein: a return spring (234) which pushes the sleeving part (2311) to the driving handle (233) is arranged between the sleeving part (2311) and the base (100).

4. The fixture capable of positioning a plurality of workpieces at once of claim 1, wherein: clamping mechanism (300) is including clamping component (310) that sets up in pairs, clamping component (310) is including layering (311), layering seat (312) and locking handle (313), and is in pairs layering seat (312) connect in base (100) and be located respectively the left and right sides of work piece bearing surface (110), in pairs layering (311) set up respectively in corresponding layering seat (312), in pairs layering (311) transversely set up and are located respectively the upper left side and the upper right side of work piece bearing surface (110), in pairs one end that layering (311) is relative is configured as and is compressed tightly the end and the other end is configured as the control end, layering (311) can be relative around predetermined fulcrum layering seat (312) rotate so that the end that compresses tightly of layering (311) can be close to or keep away from work piece bearing surface (110), layering (311) can be relative layering seat (312) transverse movement so that it is in pairs to compress tightly the end of layering (311) can be close to each other Or the locking handle (313) is connected to the pressing strip (311) or the pressing strip seat (312), and the locking handle (313) is used for driving the control end of the pressing strip (311) to be pushed up or loosened so as to enable the pressing end to press or loosen the workpiece.

5. The fixture capable of positioning a plurality of workpieces at once of claim 4, wherein: the locking handle (313) is provided with a push rod (3131), the control end of the pressing strip (311) is provided with a threaded hole (3111), the push rod (3131) is in threaded connection with the threaded hole (3111), and the lower end of the push rod (3131) is opposite to the pressing strip seat (312).

6. The fixture capable of positioning a plurality of workpieces at once of claim 4, wherein: the pressing strip (311) is provided with a strip-shaped hole (3112) extending along the length direction of the pressing strip, the preset fulcrum is configured to be arranged on a transverse shaft (3121) of the pressing strip seat (312), and the transverse shaft (3121) penetrates through the strip-shaped hole (3112) and is in sliding fit with the strip-shaped hole.

7. The fixture capable of positioning a plurality of workpieces at once of claim 5, wherein: the clamping assemblies (310) are provided with a plurality of pairs and are arranged in two rows along the front-back direction, the batten seats (312) of the clamping assemblies (310) in one row are connected to the connecting seats (320), and the connecting seats (320) are detachably connected to the base (100).

8. The fixture capable of positioning a plurality of workpieces at once of claim 1, wherein: still be provided with burring positioning mechanism (400) on base (100), burring positioning mechanism (400) includes pedestal (410), two location strip (420) and top tight mechanism (430), pedestal (410) set up in base (100), two location strip (420) fixed set up in the up end of pedestal (410), two location strip (420) set up perpendicularly mutually, top tight mechanism (430) set up in pedestal (410) and be used for with the part top tight in one location strip (420).

9. The fixture capable of positioning a plurality of workpieces at once of claim 8, wherein: the jacking mechanism comprises a jacking screw (431) and a cushion block (432), the jacking screw (431) is in threaded connection with the base body (410), the free end of the jacking screw (431) faces towards one of the positioning strips (420), and the cushion block (432) is arranged on one side of the free end of the jacking screw (431).

10. The fixture capable of positioning a plurality of workpieces at once of claim 1, wherein: the positioning mechanism (200) further comprises an end side positioning strip (240), the end side positioning strip (240) is fixedly arranged on the base (100), and the end side positioning strip (240) and the fixed positioning strip (210) are perpendicularly arranged.

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