CN216066458U

CN216066458U - Multi-point position fixed workpiece clamp

Info

Publication number: CN216066458U
Application number: CN202122162862.2U
Authority: CN
Inventors: 侯向明; 李巍巍; 高文乐; 张瑜; 宋续浩
Original assignee: Shenyang Shiping Machinery Co ltd
Current assignee: Shenyang Shiping Machinery Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-03-18
Anticipated expiration: 2031-09-08

Abstract

The utility model discloses a multi-point fixed workpiece fixture, which belongs to the technical field of fixtures and comprises an operating platform and supporting legs, wherein the operating platform is provided with a first fixed part and a second fixed part, the first fixed part comprises a back plate, a screw rod, a screw block, a supporting rod and clamping plates, the second fixed part comprises a base, a sliding table, a short shaft, a cam, a worm wheel, a worm, an L-shaped ejector rod, a spring, a pressing rod and a pressing block, the two clamping plates can be driven to move oppositely by the two screw blocks and the two supporting rods when the screw rod rotates, the front end and the rear end of a workpiece can be clamped and fixed when the two clamping plates move oppositely, the sliding table can be driven to move rightwards by the worm wheel, the short shaft and the cam when the worm rotates, one end of the L-shaped rod on the sliding table presses against the left side wall of the workpiece to drive the workpiece to move rightwards, so that the right side wall of the workpiece is attached to the back plate, the worm rotates continuously, and the L-shaped ejector rod is subjected to the reaction force of the workpiece, the L-shaped ejector rod rotates clockwise, the spring extends, and the pressing block is pressed at the upper end of the workpiece.

Description

Multi-point position fixed workpiece clamp

Technical Field

The utility model belongs to the technical field of clamps, and particularly relates to a multi-point fixed workpiece clamp.

Background

The fixture is a process device used for fastening a workpiece during machining so as to keep a machine tool, a cutter and the workpiece at correct and relative positions, namely, the tool fixture is an indispensable part for machining, and under the drive that the machine tool technology develops towards high speed, high efficiency, precision, composite, intelligent and environment-friendly directions, the fixture technology develops towards high precision, high efficiency, general module and combination and economic directions.

When the existing clamp clamps a workpiece, only one point position or two point positions of the workpiece can be clamped, the clamping effect is poor, and the workpiece is easy to shake when a worker operates the workpiece.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the clamping effect is poor because the conventional clamp only can clamp one point position or two point positions of a workpiece when the workpiece is clamped by the conventional clamp in the prior art, the utility model provides the multi-point-position fixed workpiece clamp which can clamp and fix the multiple point positions of the workpiece under the mutual matching of a first fixing part and a second fixing part, so that the clamping effect is improved. The specific technical scheme is as follows:

a multi-point fixed workpiece fixture comprises an operation platform and supporting legs arranged at the bottom of the operation platform, wherein a first fixed part and a second fixed part are arranged on the operation platform, the first fixed part comprises a back plate fixedly connected to the operation platform, a screw rod is rotationally connected to the operation platform in a rotating manner, two sections of external threads with opposite directions are symmetrically arranged on the surface of the screw rod, a screw block is symmetrically and threadedly connected to the surface of the screw rod, a supporting rod is fixedly connected to the upper end of the screw block, a strip-shaped through groove is formed in the upper end of the operation platform, the supporting rod penetrates through the strip-shaped through groove and is connected with a clamping plate, the second fixed part comprises a base fixed on the operation platform, a first groove and a second groove communicated with the first groove are formed in the operation platform, a sliding table is slidably connected to the first groove, a short shaft is rotationally connected to the second groove, a cam is fixedly sleeved on the surface of the short shaft, and a worm wheel is fixedly connected to the front wall of the short shaft penetrating through the base, the operating platform is rotatably connected with a worm, the worm is meshed with a worm wheel, a notch is formed in the side wall of the sliding table, an L-shaped ejector rod is rotatably connected in the notch, a spring is arranged between the L-shaped ejector rod and the inner surface of the notch, a pressing rod is fixedly connected to the surface of the L-shaped ejector rod, and a pressing block is connected to the lower end face of the pressing rod.

Preferably, the bottom of spiral shell piece is connected with the draw runner, and the spout has been seted up to operation platform's inside bottom, and draw runner sliding connection is in the spout.

Preferably, the rubber pad is fixedly connected to the surface of one side of the two clamping plates opposite to each other, and the surface of the rubber pad is provided with an anti-skid part.

Preferably, the non-slip part is a colloidal particle fixedly attached to the surface of the rubber mat.

Preferably, the antiskid part is a sawtooth-shaped adhesive tape fixedly connected to the surface of the rubber mat

Preferably, the pressure rod and the pressure block are integrally formed in a stamping mode

Preferably, the screw penetrates through the front wall of the operating platform and is fixedly connected with a hand wheel.

Preferably, the front end of the worm is fixedly connected with a rocker.

Preferably, one end of the spring is hung on the surface of the L-shaped ejector rod, and the other end of the spring is hung on the inner surface of the notch.

The utility model provides a multiple spot position fixed work piece anchor clamps, compares with prior art, and its beneficial effect is:

1. when the screw rod in the first fixing part rotates, the two clamping plates can be driven to move in opposite directions through the two screw blocks and the two supporting rods, the two clamping plates can clamp and fix the front end and the rear end of a workpiece when moving in opposite directions, the worm in the second fixing part can drive the sliding table to move rightwards through the worm wheel, the short shaft and the cam when rotating, one end of the L-shaped rod on the sliding table presses against the left side wall of the workpiece to drive the workpiece to move rightwards, so that the right side wall of the workpiece is attached to the back plate, the worm continues to rotate, the L-shaped ejector rod receives the reaction force of the workpiece at the moment, the L-shaped ejector rod rotates clockwise, the spring extends, the pressing rod on the L-shaped ejector rod drives the pressing block to press the upper end face of the workpiece, and under the mutual matching of the L-shaped ejector rod and the pressing block, the left end, the right end and the upper end of the workpiece can be pressed, and in sum, under the mutual matching of the first fixing part and the second fixing part, the fixing device can fix a plurality of surfaces of the workpiece, such as the front surface, the back surface, the left surface, the right surface, the upper surface and the lower surface, and improve the fixing effect of the workpiece.

2. According to the utility model, the worm drives the worm wheel to rotate, so that the L-shaped ejector rod and the pressing block are driven to tightly press the left end, the right end and the upper end of the workpiece, and the worm wheel have self-locking performance, so that the worm wheel can be prevented from reversing, and the workpiece fixing effect is improved.

3. According to the clamping plate, the rubber pad is arranged on the surface of the clamping plate, the anti-skidding part is arranged on the surface of the rubber pad, the friction force of the clamping plate when the clamping plate clamps the front end and the rear end of a workpiece is improved under the action of the rubber pad and the protection part, and the clamping effect is further improved.

Drawings

FIG. 1 is a schematic structural view of a multi-point workpiece fixture according to the present invention;

FIG. 2 is a schematic view of the internal structure of a multi-point workpiece fixture according to the present invention;

FIG. 3 is a schematic sectional view taken along the line A-A in FIG. 1;

FIG. 4 is an enlarged view of the structure at B in FIG. 2;

FIG. 5 is a schematic top view of a base of a multi-point workpiece fixture according to the present invention.

In the figure: 1-operation platform, 2-support legs, 3-back plate, 4-screw rod, 5-screw block, 6-support rod, 7-strip through groove, 8-clamping plate, 9-base, 10-first groove, 11-second groove, 12-sliding table, 13-short shaft, 14-cam, 15-worm wheel, 16-worm, 17-notch, 18-L ejector rod, 19-spring, 20-compression rod, 21-compression block, 22-rubber pad, 23-hand wheel and 24-rocker.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1-5, the present embodiment provides a technical solution: a multi-point fixed workpiece fixture comprises an operating platform 1 and supporting legs 2 arranged at the bottom of the operating platform 1, wherein a first fixing part and a second fixing part are arranged on the operating platform 1, the first fixing part comprises a back plate 3 fixedly connected to the operating platform 1, the back plate 3 and the operating platform 1 are of an integrally formed structure, the strength of the back plate 3 is improved, a screw rod 4 is rotatably connected to the operating platform 1, a middle block is arranged at the middle part of the screw rod 4, two sections of external threads in opposite directions are symmetrically arranged on the surface of the screw rod 4 and positioned on two sides of the middle block, screw blocks 5 are symmetrically and threadedly connected to the surface of the screw rod 4, a sliding strip is welded at the bottom of each screw block 5, a sliding groove is formed in the inner bottom end of the operating platform 1, the sliding strip is slidably connected to the sliding groove, supporting rods 6 are welded at the upper ends of the two screw blocks 5, a strip-shaped through groove 7 is formed in the upper end of the operating platform 1, and a clamping plate 8 is welded at the upper ends of the two supporting rods 6, the second fixing part comprises a base 9 welded on the operating platform 1, a first groove 10 and a second groove 11 communicated with the first groove 10 are formed in the operating platform 1, a sliding table 12 is connected in the first groove 10 in a sliding mode, a short shaft 13 is connected in the second groove 11 in a rotating mode, a cam 14 is fixedly sleeved on the surface of the short shaft 13, a worm wheel 15 is fixedly connected on the front wall of the base 9, the short shaft 13 penetrates through the short wall, a worm 16 is connected on the operating platform 1 in a rotating mode, the worm 16 is meshed with the worm wheel 15, self-locking performance is achieved between the worm 16 and the worm wheel 15, therefore, the worm wheel 15 can be prevented from reversing, a notch 17 is formed in the side wall of the sliding table 12, an L-shaped ejector rod 18 is connected in the rotating mode in the notch 17, the position of the L-shaped ejector rod 18 is located at the center position of the connecting line of the two clamping plates 8, a spring 19 is arranged between the inner surface of the L-shaped ejector rod 18 and the notch 17, and a compression rod 20 is fixedly connected on the surface of the L-shaped ejector rod 18, a pressing block 21 is welded on the lower end face of the pressing rod 20, the lower end of the pressing rod 20 is located on the upper portion of the upper end face of the workpiece to be fixed under the condition that the spring 19 is free from external force, and one end, close to the fixed workpiece, of the L-shaped ejector rod 18 is located on the lower portion of the upper end face of the workpiece to be fixed.

When the device is used, a workpiece to be fixed is placed between the back plate 3 and the base 9, then the screw rod 4 is rotated, two screw blocks 5 on the surface of the screw rod 4 move oppositely, the two screw blocks 5 drive two clamping plates 8 to move oppositely through two supporting rods 6, the two clamping plates 8 are contacted with the front side wall and the rear side wall of the workpiece to be fixed to drive the workpiece to move so as to center the workpiece, at the moment, the screw rod 4 can be rotated reversely after the workpiece is centered, a small amount of clearance is left between the clamping plates 8 and the front side wall and the rear side wall of the workpiece to be fixed, then the worm 16 is rotated, the worm 16 drives the cam 13 to rotate clockwise through the worm wheel 15, the cam 13 is contacted with the left side wall of the sliding table 12 to drive the sliding table 12 to move rightwards when rotating clockwise, the sliding table 12 drives the L-shaped ejector rod 18 and the pressing rod 20 to move rightwards, one end, close to the workpiece to be fixed, of the L-shaped ejector rod 18 is contacted with the left side wall of the workpiece to be fixed, the workpiece is driven to move rightwards, the right side wall of the workpiece is in contact with the left side wall of the back plate 3, the L-shaped ejector rod 18 is subjected to the reaction force of the workpiece, the L-shaped ejector rod 18 rotates clockwise, the spring 19 elastically deforms and extends, the pressing rod 20 on the L-shaped ejector rod 18 drives the pressing block 21 at the bottom of the L-shaped ejector rod to press the upper end face of the workpiece, the screw rod 4 rotates again, the two clamping plates 8 are tightly attached to the front end face and the rear end face of the workpiece, the front end and the rear end of the workpiece are fixed under the mutual matching of the two clamping plates 8, the left end and the right end and the upper end of the workpiece can be pressed under the mutual matching of the L-shaped ejector rod 18, the back plate 3 and the pressing block 21, and in sum, the front, the rear, the left and the right sides and the upper and the lower sides of the workpiece can be fixed under the mutual matching of the first fixing part and the second fixing part, and the fixing effect of the workpiece is improved.

Example 2:

This example differs from example 1 in that: fixedly connected with cushion 22 on the relative one side surface of two splint 8, cushion 22 surface is equipped with anti-skidding portion, and anti-skidding portion is fixed connection at cushion 22 colloidal particle on the surface, has improved the frictional force when splint 8 presss from both sides tightly to both ends around the work piece under the effect of cushion 22 and protection part, has further improved and has pressed from both sides tight effect.

Specifically, the screw 4 in this embodiment further fixedly connects with a hand wheel 23 through the front wall of the operation platform 1, the front end of the worm 16 is fixedly connected with a rocker 24, and the screw 4 and the worm 16 can be rotated conveniently by arranging the hand wheel 23 and the rocker 24.

Example 3:

The present embodiment is different from embodiments 1 and 2 in that: one end of the spring 19 in the embodiment is hung on the surface of the L-shaped ejector rod 18, and the other end is hung on the inner surface of the notch 17, so that the spring 19 is convenient to replace.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a multiple spot position fixed workpiece anchor clamps, includes operation platform (1) and sets up supporting leg (2) of operation platform bottom, its characterized in that: the operation platform is characterized in that a first fixing part and a second fixing part are arranged on the operation platform (1), the first fixing part comprises a back plate (3) fixedly connected to the operation platform (1), a screw rod (4) is rotationally connected to the operation platform (1), two sections of external threads opposite in direction are symmetrically arranged on the surface of the screw rod (4), a screw block (5) is symmetrically in threaded connection with the surface of the screw rod (4), a supporting rod (6) is fixedly connected to the upper end of the screw block (5), a strip-shaped through groove (7) is formed in the upper end of the operation platform (1), the supporting rod (6) penetrates through the strip-shaped through groove (7) and is connected with a clamping plate (8), the second fixing part comprises a base (9) fixed on the operation platform (1), a first groove (10) and a second groove (11) communicated with the first groove (10) are formed in the operation platform (1), first recess (10) sliding connection has slip table (12), second recess (11) internal rotation is connected with minor axis (13), minor axis (13) fixed surface cover is equipped with cam (14), minor axis (13) run through the antetheca fixedly connected with worm wheel (15) of base (9), it is connected with worm (16) to rotate on operation platform (1), worm (16) with worm wheel (15) interlock, be equipped with breach (17) on the lateral wall of slip table (12), breach (17) internal rotation is connected with L type ejector pin (18), L type ejector pin (18) with be equipped with spring (19) between the internal surface of breach (17), L type ejector pin (18) fixed surface is connected with depression bar (20), the lower terminal surface of depression bar (20) is connected with briquetting (21).

2. The multi-point position fixed workpiece holder of claim 1, wherein: the bottom of spiral shell piece (5) is connected with the draw runner, the spout has been seted up to the inside bottom of operation platform (1), draw runner sliding connection be in the spout.

3. A multi-point position fixed work holder as claimed in claim 2, wherein: the rubber mats (22) are fixedly connected to the surfaces of the opposite sides of the two clamping plates (8), and anti-skidding portions are arranged on the surfaces of the rubber mats (22).

4. A multi-point position fixed work holder as claimed in claim 3, wherein: the antiskid part is colloidal particles fixedly connected on the surface of the rubber cushion (22).

5. A multi-point position fixed work holder as claimed in claim 3, wherein: the antiskid part is a sawtooth-shaped adhesive tape fixedly connected to the surface of the rubber mat (22).

6. A multi-point position fixing work holder as claimed in claim 4 or 5, wherein: the pressure lever (20) and the pressing block (21) are integrally formed in a stamping mode.

7. The multi-point position fixed workpiece holder of claim 6, wherein: the screw rod (4) penetrates through the front wall of the operating platform (1) and is fixedly connected with a hand wheel (23).

8. The multi-point position fixed workpiece holder of claim 7, wherein: the front end of the worm (16) is fixedly connected with a rocker (24).

9. The multi-point position fixed workpiece holder of claim 8, wherein: one end of the spring (19) is hung on the surface of the L-shaped ejector rod (18), and the other end of the spring is hung on the inner surface of the notch (17).