CN219562717U - Precision hydraulic combined vice - Google Patents

Abstract

The utility model discloses a precise hydraulic combined vice, which comprises a base, a pull-down jaw assembly, a fixed jaw assembly and a hydraulic cylinder, wherein the base is provided with a fixed jaw; the pull-down clamp assembly is arranged on the base and comprises a translation block and a pull-down block; the fixed jaw assembly is arranged on the base and matched with the translation block to clamp and lock the workpiece; the hydraulic cylinder is arranged on the base and drives the pull-down block to move up and down; the pull-down jaw assembly also comprises a datum plate which can be transversely guided and movably arranged on the base, and the translation block can be laterally guided and movably arranged on the datum plate back and forth. Through addding the datum plate, the datum plate can transversely guide movably to set up on the base to but cooperation this translation piece side direction guide back and forth movably sets up on the datum plate, can make between translation piece and the datum plate and the cooperation precision between drop-down piece and the translation piece be within 0.02mm, thereby effectively improve the holistic centre gripping precision of hydraulic pressure combination vice, bring convenience for production operation.

Description

Precision hydraulic combined vice

Technical Field

The utility model relates to the technical field of vices, in particular to a precise hydraulic combined vice.

Background

The vice is a tool for clamping a workpiece by relatively moving two jaws by using a screw or other mechanism. The vice is generally composed of a base, a vice body, a fixed jaw, a movable jaw and a transmission mechanism for moving the movable jaw. Different types of bench vices and machine vices are available according to the application occasions. The bench vice is arranged on the bench work workbench for the bench worker to clamp the workpiece so as to process sawing, filing and the like. The jaw of the bench vice is generally higher and is arched, and the body of the bench vice can be rotated and fastened on the base at will. The vice is an accessory of machine tool, also called flat tongs, and is generally installed on the working table of milling machine, drilling machine, shaper and surface grinder. Compared with bench vices, the machine vice has wide and low jaw, large clamping force and high precision requirement. The machine vice has various types, and can be classified into a common type and a precise type according to precision. The precision type machine tool is used for finishing machine tools such as surface grinding machines, boring machines and the like. The machine vice structure can be divided into a rotary type with a base, a fixed type without a base, a tiltable type and the like.

At present, a hydraulic combined vice is arranged on the market and can well clamp a workpiece, and the main structure of the hydraulic combined vice comprises a base, a pull-down jaw assembly, a fixed jaw assembly and a hydraulic cylinder; the pull-down clamp assembly is arranged on the base and comprises a translation block and a pull-down block; the fixed jaw assembly is arranged on the base and matched with the translation block to clamp and lock the workpiece; the hydraulic cylinder is arranged on the base and drives the pull-down block to move up and down.

However, in the prior art, the translation block is directly installed on the base, and the matching precision of the translation block and the base is lower, so that the overall clamping precision of the hydraulic combined vice is reduced. Thus, there is a need for improvements to current hydraulic combination vises.

Disclosure of Invention

In view of the above, the present utility model aims at overcoming the drawbacks of the prior art, and its primary objective is to provide a precision hydraulic combined vice, which can effectively solve the problem of lower overall clamping precision of the existing hydraulic combined vice.

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

a precision hydraulic combined vice comprises a base, a pull-down jaw assembly, a fixed jaw assembly and a hydraulic cylinder; the pull-down clamp assembly is arranged on the base and comprises a translation block and a pull-down block; the fixed jaw assembly is arranged on the base and matched with the translation block to clamp and lock the workpiece; the hydraulic cylinder is arranged on the base and drives the pull-down block to move up and down; the pull-down jaw assembly also comprises a reference plate, the reference plate can be transversely guided and movably arranged on the base, the translation block can be laterally guided and movably arranged on the reference plate back and forth, and the pull-down block can be vertically movably arranged on the reference plate and can promote the translation block to move outwards laterally.

As a preferable scheme, the surface of the base is concavely provided with a guide groove, the bottom of the reference plate is fixedly provided with a guide dust-proof plate, and the guide dust-proof plate is embedded in the guide groove and moves along the transverse guide of the guide groove, so that the pull-down jaw assembly can move back and forth linearly relative to the base.

As a preferred scheme, the concave first T shape spout that falls that is equipped with in top surface of base, this first T shape spout transversely extends, and the top surface of base is formed with two first racks, and these two first racks all transversely extend and are located the both sides of first T shape spout respectively, and this pull-down pincers mouth assembly and fixed jaw assembly all with first T shape spout and two first racks cooperation installation, simple structure, equipment is convenient, the installation is firm.

As a preferred scheme, be provided with spacing assembly in the base, this pneumatic cylinder passes through spacing assembly drive drop-down piece and reciprocates, this spacing assembly is including spacing seat, this spacing seat is by the pneumatic cylinder drive about activity, be formed with the second and fall T shape spout on the spacing seat, the both ends of this second fall T shape spout all are provided with spacing glass bead, first through-hole has been seted up on this drop-down piece, second through-hole has been seted up on this direction dust guard, equal altitude screw is fixed with an inverted T shape nut from top to bottom through first through-hole and second through-hole connection, this inverted T shape nut card is in the second falls T shape spout and is located between two spacing glass beads, and a structure is simple, stability is good.

As a preferable scheme, the top card of first through-hole is equipped with the dish spring, and this dish spring supports and carries out spacing fixed in the equal high screw of top equal high screw, simple structure, and the installation is firm.

As a preferable scheme, the fixed jaw assemblies are at least two, the pull-down jaw assembly is positioned between the two fixed jaw assemblies, the bottom of each fixed jaw assembly is provided with a second rack, and the second racks are meshed with the first racks to be positioned so as to clamp two workpieces simultaneously.

As a preferable scheme, the guide groove is formed in the reference plate, the guide block is fixed at the bottom of the translation block and clamped in the guide groove to move back and forth along the lateral direction of the guide groove, and the guide groove is simple in structure, stable and reliable in movement and higher in accuracy.

As a preferable scheme, the guide groove penetrates through the upper surface and the lower surface of the translation block, the guide block is arranged in the guide groove from bottom to top, the upper surface and the lower surface of the guide block penetrate through to form a third through hole, the bottom surface of the translation block is provided with a fixing hole, and a fixing bolt penetrates through the third through hole from bottom to top to be fixedly connected with the fixing hole, so that the structure is simple, and the assembly and maintenance are convenient.

As a preferable scheme, the inner side of the translation block is concavely provided with a dovetail groove, the dovetail groove extends outwards and upwards in an inclined way, and correspondingly, the outer side face of the pull-down block is convexly provided with a dovetail block, and the dovetail block is clamped in the dovetail groove so as to stably promote the translation block to move laterally.

As a preferable scheme, the top of the translation block is provided with a first appearance clamping component, and the top of the fixed jaw assembly is provided with a second appearance clamping component so as to clamp a workpiece.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, and in particular, the technical scheme can be as follows:

through addding the datum plate, the datum plate can transversely guide movably to set up on the base to but cooperation this translation piece side direction guide back and forth movably sets up on the datum plate, can make between translation piece and the datum plate and the cooperation precision between drop-down piece and the translation piece be within 0.02mm, thereby effectively improve the holistic centre gripping precision of hydraulic pressure combination vice, bring convenience for production operation.

In order to more clearly illustrate the structural features and efficacy of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic perspective view of a preferred embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a preferred embodiment of the present utility model;

FIG. 3 is an assembled perspective view of the pull down jaw assembly in accordance with the preferred embodiment of the present utility model;

FIG. 4 is an exploded view of the pull down jaw assembly of the preferred embodiment of the present utility model;

FIG. 5 is a schematic cross-sectional view of a pull-down jaw assembly in accordance with a preferred embodiment of the present utility model.

The attached drawings are used for identifying and describing:

10. base 11, first inverted T-shaped chute

12. First rack 13, handle

14. Concave cavity 15 and sideslip groove

16. Mounting groove 17, guide groove

20. Pull-down jaw assembly 21 and reference plate

211. Side press block 212, side press plate

22. Translation block 23, pull-down block

24. Guide dust guard 25, guide block

26. Fixing bolt 27 and first-appearance clamping assembly

28. Equal-height screw 29 and inverted T-shaped nut

201. Guide groove 202, third through hole

203. Fixed hole 204, dovetail groove

205. Dovetail block 206, first through hole

207. Second through hole 208, disc spring

30. Fixed jaw assembly 31, second rack

32. Second external clamping assembly 40 and hydraulic cylinder

50. Spacing assembly 51 and spacing seat

511. A second inverted T-shaped chute 52 and a limiting glass bead.

Detailed Description

Referring to fig. 1 to 5, a preferred embodiment of the present utility model is shown, which comprises a base 10, a pull-down jaw assembly 20, a fixed jaw assembly 30, and a hydraulic cylinder 40.

The top surface of the base 10 is concavely provided with a first inverted T-shaped chute 11, the first inverted T-shaped chute 11 extends transversely, and two first racks 12 are formed on the top surface of the base 10, and the two first racks 12 extend transversely and are respectively located at two sides of the first inverted T-shaped chute 11. In this embodiment, handles 13 are provided at both ends of the base 10 to facilitate the handling of the vise; and, a concave cavity 14 is formed at the bottom of the base 10, and the concave cavity 14 is communicated with the first inverted T-shaped chute 11; in addition, both side surfaces of the base 10 are provided with side sliding grooves 15 and mounting grooves 16, and the mounting grooves 16 are used for being matched with an external machine tool for mounting. In addition, the surface of the base 10 is concavely provided with a guide groove 17.

The pull-down jaw assembly 20 is arranged on the base 10, and the pull-down jaw assembly 20 comprises a reference plate 21, a translation block 22 and a pull-down block 23; the reference plate 21 is movably arranged on the base 10 in a transverse guiding manner, the translation block 22 is movably arranged on the reference plate 21 in a lateral guiding manner, and the pull-down block 23 is movably arranged on the reference plate 21 up and down and drives the translation block 22 to move outwards in a lateral direction. In this embodiment, the pull down jaw assembly 20 is mounted in cooperation with the first inverted T-shaped chute 11 and the two first racks 12. The bottom of the reference plate 21 is fixed with a guiding dust-proof plate 24, the guiding dust-proof plate 24 is embedded in the guiding groove 17 and moves along the guiding groove 17 in a transverse guiding way, so that the pull-down jaw assembly 20 can move linearly back and forth relative to the base 10, and the guiding dust-proof plate 24 is fixed at the bottom of the reference plate 21 through screws (not shown); the pull-down jaw assembly 20 is a two-way pull-down jaw assembly 20, which is provided with two translation blocks 22 arranged left and right, and the pull-down blocks 23 promote the two translation blocks 22 to move outwards laterally so as to clamp workpieces on the left side and the right side simultaneously; and, the guide slot 201 is formed on the reference plate 21, the guide block 25 is fixed at the bottom of the translation block 22, the guide block 25 is clamped in the guide slot 201 and moves back and forth along the lateral direction of the guide slot 201, so as to effectively improve the moving precision of the translation block 22, the guide slot 201 penetrates through the upper and lower surfaces of the translation block 22, the guide block 25 is installed in the guide slot 201 from bottom to top, the upper and lower surfaces of the guide block 25 penetrate through to form a third through hole 202, the bottom surface of the translation block 22 is provided with a fixing hole 203, and a fixing bolt 26 penetrates through the third through hole 202 from bottom to top to be fixedly connected with the fixing hole 203, so that the structure is simple, and the assembly and maintenance are convenient. And, the inner side of the translation block 22 is concavely provided with a dovetail groove 204, the dovetail groove 204 extends outwards and upwards in an inclined manner, and correspondingly, the outer side surface of the pull-down block 23 is convexly provided with a dovetail block 205, and the dovetail block 205 is clamped in the dovetail groove 204 so as to smoothly promote the translation block 22 to move laterally. In addition, a first profile clamping assembly 27 is provided on top of the translational block 22 to clamp the workpiece. In addition, both ends of the reference plate 21 are connected with side pressing blocks 211, the translation blocks 22 are respectively arranged on the side pressing blocks 211 in a laterally movable manner, side pressing plates 212 are hinged on the side pressing blocks 211, and the side pressing plates 212 are clamped in the side sliding grooves 15. And, the datum plate 21, the translation block 22, the pull-down block 23 and the guide block 25 are precisely matched and processed by a grinding machine, so that the matching precision among all parts is ensured to be within 0.02 mm.

The fixed jaw assembly 30 is disposed on the base 10 and cooperates with the translation block 22 to clamp and lock the workpiece. The fixed jaw assembly 30 is mounted in cooperation with the first inverted T-shaped chute 11 and the two first racks 12. In this embodiment, there are at least two fixed jaw assemblies 30, the pull-down jaw assembly 20 is located between the two fixed jaw assemblies 30, a second rack 31 is disposed at the bottom of each fixed jaw assembly 30, and the second rack 31 is engaged with the first rack 12 to be positioned, so that the fixed jaw assemblies 30 are positioned on the base 10 to clamp the workpiece. And a second external clamping assembly 32 is provided on top of the fixed jaw assembly 30 to better clamp the workpiece.

The hydraulic cylinder 40 is disposed on the base 10 and drives the pull-down block 23 to move up and down. In this embodiment, the hydraulic cylinder 40 is located in the cavity 14; and, a limiting assembly 50 is disposed in the base 10, the hydraulic cylinder 40 drives the pull-down block 23 to move up and down through the limiting assembly 50, specifically, the limiting assembly 50 includes a limiting seat 51, the limiting seat 51 is driven by the hydraulic cylinder 40 to move up and down, a second inverted-T-shaped chute 511 is formed on the limiting seat 51, two ends of the second inverted-T-shaped chute 511 are provided with limiting beads 52, a first through hole 206 is disposed on the pull-down block 23, a second through hole 207 is disposed on the guiding dust-proof plate 24, a high screw 28 passes through the first through hole 206 and the second through hole 207 from top to bottom to be connected and fixed with an inverted-T-shaped nut 29, and the inverted-T-shaped nut 29 is clamped in the second inverted-T-shaped chute 511 and is located between the two limiting beads 52. And, a disc spring 208 is clamped at the top of the first through hole 206, and the disc spring 208 abuts against the top of the equal-height screw 28 to limit and fix the equal-height screw 28. In addition, the hydraulic cylinder 40 is a double-rod hydraulic cylinder, and the specific structure and working principle thereof are all the prior art, and the specific structure and working principle of the hydraulic cylinder 40 will not be described in detail herein.

The working principle of the embodiment is described in detail as follows:

during operation, firstly, the distance between two adjacent fixed jaw assemblies 30 is adjusted according to the size of a workpiece, the two fixed jaw assemblies 30 are positioned on a base 10 and cannot move transversely, then, a pull-down jaw assembly 20 positioned between the two fixed jaw assemblies 30 is translated, the pull-down jaw assembly 20 is positioned at a proper position, then, the two workpieces are respectively clamped on two sides of the pull-down jaw assembly 20 and respectively abutted with the two fixed jaw assemblies 30, then, a hydraulic cylinder 40 is connected with an external hydraulic station, the hydraulic cylinder 40 is controlled to work by the external hydraulic station, firstly, the hydraulic cylinder 40 drives a pull-down block 23 to move downwards through a limiting assembly 50, the pull-down block 23 drives the two translation blocks 22 to move outwards laterally respectively to clamp the corresponding workpieces, and after the workpieces are clamped, external equipment can process the workpieces; when the machining operation is completed, the hydraulic cylinder 40 drives the pull-down block 23 to move upwards through the limiting assembly 50, the pull-down block 23 is not pressed against the two translation blocks 22 any more, and the two translation blocks 22 can move inwards, so that the workpiece is loosened, and the machined workpiece can be taken down at the moment.

The design focus of the utility model is that: through addding the datum plate, the datum plate can transversely guide movably to set up on the base to but cooperation this translation piece side direction guide back and forth movably sets up on the datum plate, can make between translation piece and the datum plate and the cooperation precision between drop-down piece and the translation piece be within 0.02mm, thereby effectively improve the holistic centre gripping precision of hydraulic pressure combination vice, bring convenience for production operation.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model are still within the scope of the technical solutions of the present utility model.

Claims (10)

1. A precision hydraulic combined vice comprises a base, a pull-down jaw assembly, a fixed jaw assembly and a hydraulic cylinder; the pull-down clamp assembly is arranged on the base and comprises a translation block and a pull-down block; the fixed jaw assembly is arranged on the base and matched with the translation block to clamp and lock the workpiece; the hydraulic cylinder is arranged on the base and drives the pull-down block to move up and down; the method is characterized in that: the pull-down jaw assembly also comprises a reference plate, the reference plate can be transversely guided and movably arranged on the base, the translation block can be laterally guided and movably arranged on the reference plate back and forth, and the pull-down block can be vertically movably arranged on the reference plate and can promote the translation block to move outwards laterally.

2. The precision hydraulic combination vise of claim 1, wherein: the surface of the base is concavely provided with a guide groove, the bottom of the reference plate is fixedly provided with a guide dust-proof plate, and the guide dust-proof plate is embedded in the guide groove and moves along the transverse guide of the guide groove.

3. The precision hydraulic combination vise according to claim 2, wherein: the top surface of base is concave to be equipped with first reverse T shape spout, and this first reverse T shape spout transversely extends, and the top surface of base is formed with two first racks, and these two first racks all transversely extend and are located the both sides of first reverse T shape spout respectively, and this pull-down pincers mouth assembly and fixed jaw assembly all with first reverse T shape spout and two first racks cooperation installation.

4. The precision hydraulic combination vise of claim 3, wherein: be provided with spacing assembly in the base, this pneumatic cylinder passes through spacing assembly and drives the pull-down piece and reciprocate, and this spacing assembly is including spacing seat, and this spacing seat is by the pneumatic cylinder drive activity from top to bottom, is formed with the second and falls T shape spout on the spacing seat, and the both ends of this second fall T shape spout all are provided with spacing glass bead, have seted up first through-hole on this pull-down piece, have seted up the second through-hole on this direction dust guard, and equal altitude screw is fixed with an fall T shape nut from top to bottom through first through-hole and second through-hole connection, and this falls T shape nut card is in the second falls T shape spout and is located between two spacing glass beads.

5. The precision hydraulic combination vise of claim 4, wherein: the top of the first through hole is clamped with a disc spring, and the disc spring abuts against the top of the equal-height screw to limit and fix the equal-height screw.

6. The precision hydraulic combination vise of claim 3, wherein: the fixed jaw assembly is at least two, the pull-down jaw assembly is positioned between the two fixed jaw assemblies, the bottom of each fixed jaw assembly is provided with a second rack, and the second racks are meshed with the first racks for positioning.

7. The precision hydraulic combination vise of claim 1, wherein: the guide groove is formed in the reference plate, the guide block is fixed to the bottom of the translation block, and the guide block is clamped in the guide groove and moves back and forth along the lateral direction of the guide groove.

8. The precision hydraulic combination vise of claim 7, wherein: the guide groove penetrates through the upper surface and the lower surface of the translation block, the guide block is arranged in the guide groove from bottom to top, a third through hole is formed in the upper surface and the lower surface of the guide block in a penetrating mode, a fixing hole is formed in the bottom surface of the translation block, and a fixing bolt penetrates through the third through hole from bottom to top and is fixedly connected with the fixing hole.

9. The precision hydraulic combination vise of claim 1, wherein: and a dovetail groove is concavely formed in the inner side of the translation block, the dovetail groove extends outwards and upwards in an inclined mode, and correspondingly, a dovetail block is convexly arranged on the outer side face of the pull-down block and is clamped in the dovetail groove.

10. The precision hydraulic combination vise of claim 1, wherein: the top of translation piece is provided with first appearance clamping subassembly, and the top of this fixed jaw assembly is provided with second appearance clamping subassembly.