CN211539524U

CN211539524U - Workpiece clamping device

Info

Publication number: CN211539524U
Application number: CN201922239264.3U
Authority: CN
Inventors: 左立志; 郭兴春
Original assignee: Botou Shengrui Foundry Industry Technology Research Co ltd; Botou Yaqi Casting Co ltd
Current assignee: Botou Shengrui Foundry Industry Technology Research Co ltd; Botou Yaqi Casting Co ltd
Priority date: 2019-12-14
Filing date: 2019-12-14
Publication date: 2020-09-22
Anticipated expiration: 2029-12-14

Abstract

The utility model discloses a workpiece clamping device, which comprises a four-jaw chuck and a lower pull disc, wherein the lower pull disc is embedded in the middle of the ring shape of the four-jaw chuck, the top end of the four-jaw chuck is embedded with a chuck clamping jaw main seat at the positions which are uniformly and equally divided around, the inner side of the chuck clamping jaw main seat is embedded into the peripheral chutes of the lower pull disc through a slide block to be movably connected with the top end of the four-jaw chuck, a floating clamping jaw is embedded in the U-shaped groove at the top end of the chuck clamping jaw main seat, the top end of the floating clamping jaw is vertically connected with a floating link mandrel at the position which is coincided with the U-shaped groove in a penetrating way, the inner side surface of the floating clamping jaw is embedded with a workpiece clamping point at the position which is symmetrical, a workpiece supporting seat is arranged between the chuck clamping jaw main seats at the top end face of the four-jaw chuck, the adjustment is convenient, and the turning machine is particularly used for turning parts such as a rotary long shaft disc, a motor bracket and the like.

Description

Workpiece clamping device

Technical Field

The utility model belongs to the technical field of the work piece processing is relevant, concretely relates to work piece clamping device.

Background

Most of workpiece machining means that some parts are machined into different shapes according to needs by tools such as mechanical equipment, and in the machining process, in order to avoid the workpieces from shaking and the like and facilitate machining operation, the workpieces need to be fixed by using a clamping device of the workpieces.

The prior art of the workpiece clamping device has the following problems: the floating clamping is adopted, the clamping jaw body is designed to float in the axial direction of a workpiece, the cutting force is not uniform in axial control, the potential safety hazards of workpiece vibration and flying materials are caused, and if the downward pressure is manually increased, the feeding and discharging time is long, and the pressure control is unstable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a work piece clamping device to the adoption centre gripping that provides in solving above-mentioned background art floats, exists unsteadily because of the clamping jaw body design in the work piece axial, and cutting force is inhomogeneous on axial control, causes the potential safety hazard of work piece vibrations and flying materials, if adopt manual increase downforce, goes up unloading time long, and the unstable problem of pressure control.

In order to achieve the above object, the utility model provides a following technical scheme:

a workpiece clamping device comprises a four-jaw chuck and a lower pull disc, wherein the lower pull disc is embedded in the middle of the ring of the four-jaw chuck, the top end of the four-jaw chuck is uniformly embedded in equal parts at the periphery, a chuck clamping jaw main seat is embedded in a peripheral chute of the lower pull disc through a sliding block, the inner side of the chuck clamping jaw main seat is movably connected to the top end of the four-jaw chuck in a manner of embedding a floating clamping jaw in a U-shaped groove, the top end of the floating clamping jaw is vertically connected with a floating link mandrel in a coincident position in the U-shaped groove in a penetrating manner, the inner side surface of the floating clamping jaw is embedded with workpiece clamping points in symmetrical positions, a workpiece supporting seat is arranged between the chuck clamping jaw main seats at the end face of the top end of the four-jaw chuck, and the workpiece supporting seat is fixedly connected to the inner side edge of the ring of the four, the inside of pulldown dish is run through the embedding and is had the chuck pull rod lieing in vertical centre of a circle department, the top of chuck pull rod is provided with work piece pull-down structure in the top that lies in the pulldown dish, the outside of work piece pull-down structure is provided with the work piece in the encirclement all around that lies in chuck clamping jaw owner seat, the top that the work piece is fixed in the four-jaw chuck via the spacing of work piece pull-down structure.

Preferably, the workpiece pull-down structure comprises a pull-down mechanism main seat, a pressing and holding mechanism positioning seat, a telescopic block positioning sliding groove, a sliding telescopic pull-down block, a disc spring, a mechanism locking block and a pressing screw cap, wherein the pull-down mechanism main seat is arranged at the port of the top end of the four-jaw chuck, a chuck pull rod is embedded at the bottom end of the pull-down mechanism main seat at the position of a circle center, the pressing and holding mechanism positioning seat is embedded in the pull-down mechanism main seat at the bottom side, the sliding telescopic pull-down blocks are arranged at the penetrating ports of the two ends of the pull-down mechanism main seat at the left side and the right side of the pressing and holding mechanism positioning seat, the telescopic pull-down block positioning sliding groove is arranged above the sliding telescopic pull-down block, the sliding telescopic pull-down block is engaged and connected with the left and the right groove ports of the telescopic block positioning sliding groove, the disc spring is arranged above the telescopic block positioning, the top of disc spring is provided with the locking piece of mechanism, the locking piece of mechanism covers in the top of disc spring, the top port department of main seat of drop-down mechanism is provided with compresses tightly the spiral shell lid, compress tightly the spiral shell lid and twist in the top port department of main seat of drop-down mechanism soon.

Preferably, the chuck pull rod can reciprocate for the four-jaw chuck under the effect of power, chuck clamping jaw main tributary seat can expand and gather together for the four-jaw chuck under the direction of pulldown dish when the chuck pull rod reciprocates for the four-jaw chuck.

Preferably, chuck clamping jaw main base of four-jaw chuck top end face swing joint is inwards gathering together the setting when the chuck pull rod moves down, chuck clamping jaw main base of four-jaw chuck top end face swing joint is the setting of outdiffusion when the chuck pull rod moves up.

Preferably, the floating connecting mandrel does not firmly interlock the floating clamping jaw in a U-shaped groove formed in the top end of the chuck clamping jaw main seat, and the floating clamping jaw can swing slightly relative to the chuck clamping jaw main seat through the movable insertion of the floating connecting mandrel.

Preferably, when the chuck pull rod moves downwards, the sliding telescopic pull-down block is arranged to expand outwards and press downwards at the through holes at the two ends of the main seat of the downward-pulling mechanism, and when the chuck pull rod moves upwards, the sliding telescopic pull-down block is arranged to contract inwards and move upwards at the two end holes of the main seat of the downward-pulling mechanism.

Preferably, the disc spring is formed by combining a plurality of groups of spring pieces, and the disc spring is inserted above the telescopic block positioning sliding groove from a cylindrical inserted rod at the top end of the telescopic block positioning sliding groove.

Preferably, the end face of the outer end of the workpiece clamping point is a rough face, the workpiece clamping point is symmetrically arranged relative to the floating clamping jaw, and the end face of the outer end of the floating clamping jaw is uniformly attached to the cylindrical outer surface of the workpiece.

Compared with the prior art, the utility model provides a work piece clamping device possesses following beneficial effect:

the automatic telescopic lower pressing and holding mechanism is additionally arranged on the basis of multipoint floating clamping, the positioning is stable, the pressure is adjustable, the quality hidden danger and the potential safety hazard caused by uneven cutting force and discontinuous turning are improved, the investment cost is reduced, the defects are overcome, the application range is wide, the adjustment is convenient, and the turning processing of parts such as a rotary long shaft disc and a motor support is particularly carried out.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic structural diagram of a workpiece and a whole fixture in a workpiece clamping device according to the present invention;

fig. 2 is a schematic view of an overall structure of a clamp in a workpiece clamping device according to the present invention;

fig. 3 is a schematic structural view of a workpiece pull-down mechanism in a workpiece clamping device according to the present invention;

fig. 4 is a schematic cross-sectional view of a workpiece pull-down mechanism in the workpiece clamping device according to the present invention;

fig. 5 is a schematic view of a split structure of a workpiece pull-down mechanism in the workpiece clamping device according to the present invention;

in the figure: 1. a chuck pull rod; 2. a four-jaw chuck; 3. a chuck jaw main seat; 4. a floating clamping jaw; 5. a floating link mandrel; 6. a workpiece supporting seat; 7. a workpiece pull-down structure; 8. a workpiece clamping point; 9. a workpiece; 10. pulling down the disc; 71. a pull-down mechanism main seat; 72. a positioning seat of the pressing mechanism; 73. the telescopic block positions the sliding groove; 74. sliding the telescopic pull-down block; 75. a disc spring; 76. a mechanism locking block; 77. and (5) pressing a screw cap.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a workpiece clamping device, comprising:

the utility model provides a work piece clamping device, including four-jaw chuck 2 and lower drawing disk 10, four-jaw chuck 2's annular middle part embedding has lower drawing disk 10, four-jaw chuck 2's top is being located around even equidistribution embedding have chuck clamping jaw main tributary seat 3, the inboard of chuck clamping jaw main tributary seat 3 comes swing joint in four-jaw chuck 2's top through slider embedding to the spout all around of lower drawing disk 10, the top of chuck clamping jaw main tributary seat 3 is being located U type inslot embedding and is having floating clamping jaw 4, the top of floating clamping jaw 4 is being located the vertical through connection of the coincidence position department in U type groove and is being had unsteady interlinkage dabber 5, unsteady interlinkage dabber 5 is not with the interlock that the clamping jaw 4 that floats in the U type inslot that 3 top departments set up of chuck clamping jaw main tributary seat, unsteady clamping jaw 4 accessible is floated to be linked the activity.

The utility model provides a workpiece clamping device, the inboard surface that includes floating clamping jaw 4 has work piece centre gripping point 8 in lieing in the embedding of symmetric position department, work piece centre gripping point 8's outer end terminal surface sets up for the mat surface, work piece centre gripping point 8 sets up for the symmetry for floating clamping jaw 4, the even cylindricality surface department of laminating work piece 9 of outer end terminal surface of floating clamping jaw 4, be provided with work piece supporting seat 6 at the top terminal surface that lies in four-jaw chuck 2 between chuck clamping jaw owner seat 3, work piece supporting seat 6 connects in the inboard edge of annular of four-jaw chuck 2 through the bracing piece is fixed.

A workpiece clamping device comprises a chuck pull rod 1, a chuck pull rod 1 is embedded in the interior of a pull-down disc 10 in a penetrating mode at the position located in the vertical circle center, the chuck pull rod 1 can move up and down relative to a four-jaw chuck 2 under the action of force, when the chuck pull rod 1 moves up and down relative to the four-jaw chuck 2, a chuck clamping jaw main seat 3 movably connected with the end face of the top end of the four-jaw chuck 2 can be expanded and gathered relative to the four-jaw chuck 2 under the guide of the pull-down disc 10, when the chuck pull rod 1 moves down, the chuck clamping jaw main seat 3 movably connected with the end face of the top end of the four-jaw chuck 2 is arranged in an inward gathering mode, when the chuck pull rod 1 moves up, a workpiece pull-down structure 7 is arranged at the top end of the pull-down disc 10, a workpiece 9 is arranged on the outer side of the workpiece pull-down structure 7 and, the workpiece 9 is fixed above the four-jaw chuck 2 via a limit of the workpiece pull-down mechanism 7.

A workpiece clamping device comprises a workpiece pull-down structure 7, wherein the workpiece pull-down structure comprises a pull-down mechanism main seat 71, a pressing mechanism positioning seat 72, a telescopic block positioning sliding groove 73, a sliding telescopic pull-down block 74, a disc spring 75, a mechanism locking block 76 and a pressing screw cap 77, the pull-down mechanism main seat 71 is arranged at the top end port of a four-jaw chuck 2, a chuck pull rod 1 is embedded at the bottom end of the pull-down mechanism main seat 71 at the position of a circle center, the pressing mechanism positioning seat 72 is embedded in the pull-down mechanism main seat 71 at the position of the bottom side, the sliding telescopic pull-down blocks 74 are arranged at the penetrating ports at the two ends of the pull-down mechanism main seat 71 at the left and right sides of the pressing mechanism positioning seat 72, the telescopic pull-down block positioning sliding groove 73 is arranged above the sliding telescopic pull-down block 74, the sliding telescopic pull-down block 74 is meshed and connected with the left and right groove ports of the telescopic block positioning sliding groove 73, when the chuck pull rod 1 moves, when the chuck pull rod 1 moves upwards, the sliding telescopic pull-down block 74 is arranged to retract inwards and move upwards towards the two end ports of the pull-down mechanism main seat 71, a disc spring 75 is arranged above the telescopic block positioning sliding groove 73, the disc spring 75 is formed by combining a plurality of groups of spring pieces, the disc spring 75 is inserted above the telescopic block positioning sliding groove 73 from a top cylindrical insertion rod of the telescopic block positioning sliding groove 73, a mechanism locking block 76 is arranged above the disc spring 75, the mechanism locking block 76 covers the disc spring 75, a pressing screw cover 77 is arranged at the end port of the top end of the pull-down mechanism main seat 71, and the pressing screw cover 77 is screwed at the end port of the top end of the pull-down mechanism main seat 71.

The utility model discloses a theory of operation and use flow: when a workpiece 9 is blanked, upward acting force is applied to a chuck pull rod 1, the chuck clamping jaw main seat 3 is driven to be outwards expanded through a pull-down disc 10 embedded in a four-jaw chuck 2, at the moment, the chuck pull rod 1 acts on a pull-down mechanism main seat 71 to drive a telescopic block positioning sliding groove 73 to move upwards, and simultaneously, a sliding telescopic pull-down block 74 is driven to contract inwards to enable a disc spring 75 to compress, a pressing mechanism positioning seat 72 to move upwards integrally, the disc spring 75 is stopped after being compressed to set pressure, the functions of inward contraction and upward movement of the sliding telescopic pull-down block 74 are realized, the workpiece 9 is loosened, at the moment, a blanking task can be completed, after the workpiece 9 is fed, downward acting force is applied to the chuck pull rod 1, the chuck clamping jaw main seat 3 is driven to be inwards gathered through the pull-down disc 10 embedded in the four-jaw chuck 2, at the moment, the jacking force of the chuck pull rod 1 is reduced, the telescopic block positioning sliding groove 73 and the pressing mechanism positioning seat 72 are pushed to move downwards, so that the outward expansion and downward pressing actions of the sliding telescopic pull-down block 74 are realized, the sliding telescopic pull-down block is compacted with the workpiece 9, the workpiece 9 is kept to have the function of automatically pressing the upper part and the lower part tightly, and the stable machining can be realized.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A workpiece holding device comprising a four-jaw chuck (2) and a pull-down plate (10), characterized in that: the embedded type four-jaw chuck is characterized in that a pull-down disc (10) is embedded in the middle of an annular part of the four-jaw chuck (2), the top end of the four-jaw chuck (2) is located at the periphery and is movably embedded in a uniform equal division position, a chuck clamping jaw main seat (3) is movably connected to the top end of the four-jaw chuck (2) in a peripheral chute of the pull-down disc (10) through a slider, a floating clamping jaw (4) is embedded in a U-shaped groove at the top end of the chuck clamping jaw main seat (3), a floating link mandrel (5) is vertically connected to the top end of the floating clamping jaw (4) at a coincident position of the U-shaped groove in a penetrating manner, a workpiece clamping point (8) is embedded in a symmetrical position at the inner side surface of the floating clamping jaw (4), and a workpiece supporting seat (6) is arranged between the chuck clamping jaw main seats (3) at the top end face of the, the workpiece supporting seat (6) is fixedly connected to the inner side edge of an annular ring of the four-jaw chuck (2) through a supporting rod, a chuck pull rod (1) penetrates through and is embedded in the position, located in the vertical circle center, of the inner portion of the pull-down disc (10), a workpiece pull-down structure (7) is arranged on the top of the pull-down disc (10) at the top of the chuck pull-down disc (1), a workpiece (9) is arranged in the surrounding mode, located on the periphery of the chuck clamping jaw main seat (3), of the outer side of the workpiece pull-down structure (7), and the workpiece (9) is fixed to the top of the four-jaw chuck (2) through the limiting position of the.

2. A workpiece holding apparatus as claimed in claim 1, characterised in that: the workpiece pull-down structure (7) comprises a pull-down mechanism main seat (71), a pressing mechanism positioning seat (72), a telescopic block positioning sliding groove (73), a sliding telescopic pull-down block (74), a disc spring (75), a mechanism locking block (76) and a pressing screw cap (77), the pull-down mechanism main seat (71) is arranged at the port of the top end of the four-jaw chuck (2), a chuck pull rod (1) is embedded at the position of the circle center at the bottom end of the pull-down mechanism main seat (71), a pressing mechanism positioning seat (72) is embedded at the position of the bottom side in the pull-down mechanism main seat (71), the sliding telescopic pull-down blocks (74) are arranged at the penetrating ports of the two ends of the pull-down mechanism main seat (71) at the left side and the right side of the pressing mechanism positioning seat (72), and the telescopic block positioning sliding groove (73) is arranged above the sliding telescopic pull-down block (74), sliding telescopic pull-down block (74) meshing is connected in the groove department of controlling of flexible piece location sliding tray (73), the top of flexible piece location sliding tray (73) is provided with disc spring (75), disc spring (75) are pegged graft in the top of flexible piece location sliding tray (73), the top of disc spring (75) is provided with mechanism latch segment (76), mechanism latch segment (76) cover in the top of disc spring (75), the top port department of pull-down mechanism main seat (71) is provided with compresses tightly spiral shell lid (77), compress tightly spiral shell lid (77) and twist soon in the top port department of pull-down mechanism main seat (71).

3. A workpiece holding apparatus as claimed in claim 1, characterised in that: chuck pull rod (1) can reciprocate for four-jaw chuck (2) under the effect of power, chuck clamping jaw main tributary seat (3) can expand and gather together for four-jaw chuck (2) under the direction of pull-down dish (10) when chuck pull rod (1) reciprocates for four-jaw chuck (2).

4. A workpiece holding apparatus as claimed in claim 1, characterised in that: chuck clamping jaw main base (3) of four-jaw chuck (2) top end face swing joint is the setting of gathering together inwards when chuck pull rod (1) downstream, chuck clamping jaw main base (3) of four-jaw chuck (2) top end face swing joint is the setting of diffusing outward when chuck pull rod (1) upstream.

5. A workpiece holding apparatus as claimed in claim 1, characterised in that: the floating connection mandrel (5) does not firmly interlock the floating clamping jaw (4) in a U-shaped groove formed in the top end of the chuck clamping jaw main seat (3), and the floating clamping jaw (4) can be movably inserted into the floating connection mandrel (5) to shake in a small range relative to the chuck clamping jaw main seat (3).

6. A workpiece holding apparatus as claimed in claim 2, characterised in that: when the chuck pull rod (1) moves downwards, the sliding telescopic pull-down block (74) is arranged at the penetrating ports at the two ends of the main mechanism seat (71) and is expanded outwards and pressed downwards, and when the chuck pull rod (1) moves upwards, the sliding telescopic pull-down block (74) is arranged at the ports at the two ends of the main mechanism seat (71) and is arranged in a retracted mode and in an upward moving mode.

7. A workpiece holding apparatus as claimed in claim 2, characterised in that: the disc spring (75) is formed by combining a plurality of groups of spring pieces, and the disc spring (75) is inserted above the telescopic block positioning sliding groove (73) from a cylindrical inserted rod at the top end of the telescopic block positioning sliding groove (73).

8. A workpiece holding apparatus as claimed in claim 1, characterised in that: the outer end face of the workpiece clamping point (8) is arranged to be a rough face, the workpiece clamping point (8) is symmetrically arranged relative to the floating clamping jaw (4), and the outer end face of the floating clamping jaw (4) is uniformly attached to the outer cylindrical surface of the workpiece (9).