CN214162104U

CN214162104U - Self-centering clamp

Info

Publication number: CN214162104U
Application number: CN202022691684.8U
Authority: CN
Inventors: 李叔翰; 张飞; 陈鸿键; 王安祥
Original assignee: Nanjing Donghua Driving Shaft Co ltd
Current assignee: Nanjing Donghua Driving Shaft Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-09-10
Anticipated expiration: 2030-11-19

Abstract

The utility model discloses a from centering anchor clamps, including casing and cylinder, the slide opening has been seted up to one side of casing, and swing joint has the screw rod in the slide opening, and the one end fixedly connected with lock pin of screw rod, one side of screw rod are equipped with the worm wheel, the mounting hole has been seted up respectively to the both sides of casing, and swing joint has the lead screw in the mounting hole, fixedly connected with worm between two lead screws, and worm wheel mesh mutually, and one side swing joint of lead screw has the slider, two spouts have been seted up respectively to the both sides of casing, spout and slider sliding connection, one side fixedly connected with connecting block of slider, one side fixedly connected with slipmat of connecting block, the one end fixedly connected with support frame of air cylinder piston rod, one side fixedly connected with mount of support frame, one side outer wall of mount and one side outer wall fixed connection of casing. The utility model discloses can carry out effectual fixed to the work piece, prevent the smooth silk of work piece, improve the product quality of work piece processing.

Description

Self-centering clamp

Technical Field

The utility model relates to a work piece processing technology field especially relates to a from centering anchor clamps.

Background

In the process equipment, in order to enable the surface machined by the working procedure to meet the technical requirements of the size, the geometric shape, the relative position and the like specified by a drawing, a workpiece needs to be positioned and clamped before machining so as to enable the workpiece to always keep a correct machining position in the machining process, and the machining technical requirements specified by the working procedure are guaranteed.

Through the retrieval, grant publication number is CN 207982817U's patent, discloses a from centering anchor clamps, anchor clamps include base, first fixing base, first movable block, second fixing base, along base length direction set gradually first fixing base, first movable block, second fixing base on the base. The above patents suffer from the following disadvantages: the workpiece can not be effectively fixed, so that the workpiece is easy to slide, the quality of the processed product of the workpiece is influenced, and the requirements of people can not be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a self-centering clamp.

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

the utility model provides a from centering anchor clamps, includes casing and cylinder, the slide opening has been seted up to one side of casing, and swing joint has the screw rod in the slide opening, and the one end fixedly connected with lock pin of screw rod, one side of screw rod are equipped with the worm wheel, the mounting hole has been seted up respectively to the both sides of casing, and swing joint has the lead screw in the mounting hole, fixedly connected with worm between two lead screws, and the worm meshes with the worm wheel mutually, and one side swing joint of lead screw has the slider, two spouts have been seted up respectively to the both sides of casing, spout and slider sliding connection, one side fixedly connected with connecting block of slider, one side fixedly connected with.

Furthermore, one end of the cylinder piston rod is fixedly connected with a support frame, one side of the support frame is fixedly connected with a fixing frame, and the outer wall of one side of the fixing frame is fixedly connected with the outer wall of one side of the shell.

Furthermore, one side of the screw rod is provided with a limiting block, the limiting block is positioned on one side of the fixing frame, and one end of the screw rod is provided with a first spring.

Furthermore, the bottom inner wall of the shell is fixedly connected with a limiting frame, and the worm wheel is located in the limiting frame.

Furthermore, plug holes are respectively formed in the top and the bottom of the shell, guide rods are movably connected in the plug holes, and a second spring is arranged on one side of each guide rod.

Furthermore, one side of the guide rod is provided with a stop block, and one end of the guide rod is fixed with a clamping block.

The utility model has the advantages that:

1. the utility model discloses a cylinder drives the support frame and removes to one side to drive the mount and remove to one side, and then with near of anchor clamps propelling movement to the work piece that needs the turning, make things convenient for going on of later stage turning work.

2. The utility model discloses a work piece cover is on the lock pin, inwards promotes the work piece again to make the screw rod remove, and then make the worm wheel rotate, make the slider slide on the lead screw under worm wheel and worm engaged with effect, thereby drive two connecting blocks and gather together to the centre, carry out effectual fixing to the work piece, prevent the smooth silk of work piece, improve the product quality of work piece processing.

3. The utility model discloses a make the dog remove under the elastic action of second spring to drive two fixture blocks and extrude to the centre, and then consolidate the fixed of work piece, improve the efficiency of work piece turning.

Drawings

Fig. 1 is a schematic view of a partial cross-sectional structure of a self-centering fixture according to the present invention;

fig. 2 is a schematic perspective view of a self-centering fixture according to the present invention;

fig. 3 is a side view schematic diagram of the self-centering fixture provided by the utility model.

In the figure: 1. a fixed mount; 2. a support frame; 3. a cylinder; 4. a housing; 5. a slider; 6. connecting blocks; 7. a screw rod; 8. a worm; 9. a screw; 10. a worm gear; 11. a limiting block; 12. a first spring; 13. inserting a core; 14. a guide bar; 15. a stopper; 16. a clamping block; 17. a second spring; 18. a limiting frame; 19. a non-slip mat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a self-centering clamp comprises a shell 4 and a cylinder 3, wherein one side of the shell 4 is provided with a slide hole, the slide hole is internally connected with a screw 9 in a sliding manner, one end of the screw 9 is fixedly provided with an insert 13 through a bolt, a workpiece is sleeved on the insert 13, and the position of the insert 13 is fixed, so that the later fixing does not change the positioning reference, and then the workpiece is pushed inwards, so that the screw 9 moves towards one side, one side of the screw 9 is connected with a worm wheel 10 through a thread, so that the worm wheel 10 rotates, two sides of the shell 4 are respectively provided with a mounting hole, the mounting holes are internally and rotatably connected with lead screws 7, a worm 8 is fixed between the two lead screws 7 through bolts, the worm 8 is meshed with the worm wheel 10, one side of the lead screw 7 is slidably connected with a slide block 5, the slide block 5 slides on the lead screws 7 under the meshing action of the worm wheel 10 and the worm 8, two sides of the shell 4 are respectively provided with two chutes, the spout and slider 5 sliding connection, one side of slider 5 is passed through the bolt fastening and is had connecting block 6 to drive two connecting blocks 6 and draw close to the centre, and then fix the work piece, one side bonding of connecting block 6 has slipmat 19.

One end of a piston rod of the air cylinder 3 is fixed with a support frame 2 through a bolt, the support frame 2 moves to one side under the driving of the air cylinder 3, one side of the support frame 2 is fixed with a fixing frame 1 through a bolt, thereby driving the fixing frame 1 to move to one side together, one side outer wall of the fixing frame 1 is fixedly connected with one side outer wall of the shell 4, further, a clamp is pushed to the position near a workpiece needing turning, one side of the screw rod 9 is sleeved with a limit block 11, the limit block 11 limits the moving length of the screw rod 9, the limit block 11 is positioned at one side of the fixing frame 1, one end of the screw rod 9 is sleeved with a first spring 12, the bottom inner wall of the shell 4 is fixed with a limit frame 18 through a bolt, the limit frame 18 limits the worm wheel 10, the worm wheel 10 is positioned in the limit frame 18, inserting holes are respectively formed in the top and the bottom of the shell 4, a guide rod 14 is slidably connected in the inserting holes, one side of the guide rod 14 is sleeved with a second spring 17, make second spring 17 shrink under the extrusion of work piece, one side of guide bar 14 is cup jointed dog 15, and the one end of guide bar 14 is fixed with fixture block 16 through the bolt, makes two fixture blocks 16 extrude to the centre under the repulsion effect of second spring 17, consolidates the fixing of work piece.

The working principle is as follows: during the use, at first, the cylinder 3 is started, the support frame 2 moves to one side under the driving of the cylinder 3, thereby the fixing frame 1 is driven to move to one side together, and then the clamp is pushed to the position near a workpiece needing turning, then the workpiece is sleeved on the insertion core 13, and then the workpiece is pushed inwards, so that the screw rod 9 moves to one side, and further the worm wheel 10 rotates, the sliding block 5 slides on the screw rod 7 under the meshing effect of the worm wheel 10 and the worm 8, so that the two connecting blocks 6 are driven to be drawn close to the middle, and further the workpiece is fixed, the surface of the workpiece can be prevented from being scratched when the workpiece is fixed by adding the anti-slip mat 19, meanwhile, the second spring 17 is contracted under the extrusion of the workpiece, the two clamping blocks 16 are extruded to the middle under the repulsion effect of the second spring 17, and the fixation of the workpiece is reinforced.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

Claims

1. A self-centering clamp comprises a shell (4) and a cylinder (3), and is characterized in that, one side of the shell (4) is provided with a slide hole, a screw rod (9) is movably connected in the slide hole, one end of the screw rod (9) is fixedly connected with an inserting core (13), one side of the screw rod (9) is provided with a worm wheel (10), two sides of the shell (4) are respectively provided with a mounting hole, a screw rod (7) is movably connected in the mounting hole, a worm (8) is fixedly connected between the two screw rods (7), the worm (8) is meshed with a worm wheel (10), one side of each screw rod (7) is movably connected with a slide block (5), two sliding grooves are respectively arranged on two sides of the shell (4), the sliding grooves are connected with the sliding block (5) in a sliding way, one side of the sliding block (5) is fixedly connected with a connecting block (6), and one side of the connecting block (6) is fixedly connected with an anti-slip pad (19).

2. The self-centering clamp according to claim 1, wherein one end of the piston rod of the cylinder (3) is fixedly connected with a support frame (2), one side of the support frame (2) is fixedly connected with a fixed frame (1), and the outer wall of one side of the fixed frame (1) is fixedly connected with the outer wall of one side of the shell (4).

3. The self-centering clamp according to claim 1, wherein a limit block (11) is arranged on one side of the screw (9), the limit block (11) is arranged on one side of the fixing frame (1), and a first spring (12) is arranged at one end of the screw (9).

4. The self-centering clamp according to claim 1, wherein a limiting frame (18) is fixedly connected to the inner wall of the bottom of the shell (4), and the worm wheel (10) is located in the limiting frame (18).

5. The self-centering clamp according to claim 1, wherein the top and the bottom of the shell (4) are respectively provided with an insertion hole, a guide rod (14) is movably connected in the insertion hole, and one side of the guide rod (14) is provided with a second spring (17).

6. The self-centering clamp according to claim 5, wherein a stop (15) is provided on one side of the guide rod (14), and a latch (16) is fixed to one end of the guide rod (14).