CN218946984U

CN218946984U - CNC positioning fixture

Info

Publication number: CN218946984U
Application number: CN202223452300.2U
Authority: CN
Inventors: 陈浩昌; 杨军; 杨雪玲; 吴友章; 李启红
Original assignee: Dongguan Maoxin Machinery Equipment Co ltd
Current assignee: Dongguan Maoxin Machinery Equipment Co ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-05-02
Anticipated expiration: 2032-12-23

Abstract

The utility model discloses a CNC positioning fixture, which comprises a positioning fixture body, wherein a long rod is fixedly embedded at the bottom of the positioning fixture body, a travel groove is formed in one side of the top of the long rod, a first motor and a second motor are fixedly connected to the inside of the long rod, a two-way screw rod is fixedly connected to the driving end of the second motor, the two-way screw rod vertically penetrates through the inside of the long rod, extends into the travel groove and is in rotary connection with the long rod, and two movable cylinders are symmetrically connected with the outer surface of the two-way screw rod in a threaded manner. According to the utility model, through the long rod, the bidirectional screw rod, the movable barrel, the first motor, the second motor, the lifting assembly, the shell, the third motor and the abutting block, the machining ends of some shorter workpieces can be automatically replaced, so that both ends of the workpieces can be machined, the workpieces are not required to be disassembled and clamped again, and meanwhile, the tool setting operation is not required to be carried out again, so that the machining efficiency is improved.

Description

CNC positioning fixture

Technical Field

The utility model relates to the technical field of CNC positioning fixtures, in particular to a CNC positioning fixture.

Background

The jig is a device for fixing a machining object in a machine manufacturing process so as to occupy a correct position for performing a construction or a detection. In the mechanical processing process of the product, CNC positioning fixtures are used for a plurality of machines in the manufacturing of mechanical equipment in order to ensure the processing precision of the product;

the existing CNC positioning fixture is used for positioning and clamping workpieces, no matter how long the workpieces can be machined, one end of each workpiece can be machined, the workpiece needs to be disassembled for clamping again if the other end of each workpiece needs to be machined, and the workpiece needs to be re-aligned, so that machining efficiency is reduced.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a CNC positioning clamp.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a CNC positioning fixture, includes the positioning fixture body, positioning fixture body bottom fixedly scarf joint has the stock, travel groove has been seted up to top one side of stock, the inside fixedly connected with first motor and the second motor of stock, the drive end fixedly connected with two-way lead screw of second motor, and the inside that two-way lead screw runs through the stock perpendicularly extends to travel groove and rotates between with the stock to be connected, two the surface symmetry threaded connection of two-way lead screw has two movable cylinders, two the lifting unit is all installed to the movable cylinder, two install drive assembly jointly between lifting unit and the drive shaft of first motor, two the equal fixedly connected with casing of active end of lifting unit, two the inside equal fixedly connected with third motor of casing, two the drive shaft of third motor runs through the casing and fixedly connected with butt piece.

Further, two lifting assembly all includes the mount pad, and fixed connection between mount pad and the movable cylinder, the mount pad runs through and rotates to be connected with one-way lead screw, the surface threaded connection of one-way lead screw has the movable rod, and sliding connection and fixed connection between adjacent casing between movable rod and the movable cylinder, and the movable cylinder has spacing effect to the movable rod, guarantees that the movable rod is stable under the drive of one-way lead screw and removes.

Further, the transmission assembly comprises a spline shaft, the spline shaft is rotationally connected in the travel groove and fixedly connected with the driving shaft of the first motor, the spline shaft vertically penetrates through the outer surface of the movable cylinder, and the spline shaft is not in contact with the movable cylinder, so that normal rotation of the spline shaft is guaranteed.

Further, the two movable barrels are both rotatably connected with the shaft sleeve, the shaft sleeve is slidably sleeved on the outer surface of the spline shaft, the first bevel gears are fixedly connected to the outer surfaces of the two shaft sleeves, and the spline shaft drives the shaft sleeve to rotate, so that the first bevel gears can be driven to rotate.

Further, two the surface of first bevel gear all meshing is connected with the second bevel gear, and fixed connection between second bevel gear and the adjacent unidirectional screw, and first bevel gear can drive unidirectional screw through the second bevel gear and rotate.

Further, two the movable cylinders are both in sliding connection with the travel groove, and the movable cylinders have a limiting effect and can stably move in the travel groove.

Further, the inner surface of the positioning fixture body is fixedly connected with a travel switch, the travel is controlled, and the workpiece is prevented from being inserted into the positioning fixture body for too long.

The utility model has the beneficial effects that:

when the CNC positioning clamp is used, the machining ends of some shorter workpieces can be automatically replaced through the long rod, the two-way screw rod, the movable barrel, the first motor, the second motor, the lifting assembly, the shell, the third motor and the abutting block, so that the two ends of the workpieces can be machined without disassembling the workpieces to clamp again, tool setting operation is not needed again, and machining efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a partial top view of the present utility model;

FIG. 3 is a cross-sectional view of the housing of the present utility model;

fig. 4 is a cross-sectional view of a movable cartridge of the present utility model.

Legend description:

1. positioning a clamp body; 2. an abutment block; 3. a housing; 4. a long rod; 5. a movable rod; 6. a movable cylinder; 7. a travel switch; 8. a spline shaft; 9. a first motor; 10. a travel groove; 11. a two-way screw rod; 12. a second motor; 13. a third motor; 14. a shaft sleeve; 15. a first bevel gear; 16. a mounting base; 17. a unidirectional screw rod; 18. and a second bevel gear.

Detailed Description

Fig. 1 to 4 show, relate to a CNC positioning fixture, including positioning fixture body 1, positioning fixture body 1 bottom fixedly scarf joint has stock 4, travel groove 10 has been seted up to top one side of stock 4, the inside fixedly connected with first motor 9 of stock 4 and second motor 12, the drive end fixedly connected with two-way lead screw 11 of second motor 12, and two-way lead screw 11 runs through the inside of stock 4 perpendicularly and extends to travel groove 10's inside and rotate between with stock 4 and be connected, two movable barrels 6 of surface symmetry threaded connection of two-way lead screw 11, lifting unit is all installed to two movable barrels 6, install drive assembly jointly between the drive shaft of two lifting unit and first motor 9, the equal fixedly connected with casing 3 of movable end of two lifting unit, the inside equal fixedly connected with third motor 13 of two casings 3, the drive shaft of two third motors 13 runs through casing 3 and fixedly connected with butt piece 2.

As shown in fig. 1, a travel switch 7 is fixedly connected to the inner surface of the positioning jig body 1.

As shown in fig. 1, 2 and 4, the two lifting assemblies comprise mounting seats 16, the mounting seats 16 are fixedly connected with the movable cylinders 6, the mounting seats 16 penetrate through and rotate to be connected with unidirectional screw rods 17, the outer surfaces of the unidirectional screw rods 17 are in threaded connection with movable rods 5, and the movable rods 5 are in sliding connection with the movable cylinders 6 and are fixedly connected with the adjacent shells 3.

As shown in fig. 2, both movable cylinders 6 are slidably connected to the stroke groove 10.

As shown in fig. 2 and 3, the transmission assembly comprises a spline shaft 8, and the spline shaft 8 is rotatably connected inside a travel groove 10 and fixedly connected with a driving shaft of a first motor 9, and the spline shaft 8 vertically penetrates through the outer surface of the movable barrel 6.

The inside of two movable cylinders 6 all rotates and is connected with axle sleeve 14, and axle sleeve 14 slip cap establishes the surface at spline shaft 8, and the surface of two axle sleeves 14 all fixedly connected with first bevel gear 15.

The outer surfaces of the two first bevel gears 15 are respectively connected with a second bevel gear 18 in a meshed manner, and the second bevel gears 18 are fixedly connected with the adjacent unidirectional screw rods 17.

When the CNC positioning fixture is used, the second motor 12 drives the bidirectional screw rod 11 to rotate, thereby driving the movable rod 5 to move through the movable barrel 6, driving the abutting block 2 to be close to a workpiece through the shell 3 until the workpiece is clamped, then the positioning fixture body 1 contacts the clamping of the workpiece, then the first motor 9 drives the spline shaft 8 to rotate, the spline shaft 8 drives the shaft sleeve 14 to rotate, thereby driving the second bevel gear 18 to rotate through the first bevel gear 15, the second bevel gear 18 drives the unidirectional screw rod 17 to rotate, the unidirectional screw rod 17 drives the movable rod 5 to extend, thereby driving the workpiece to be far away from the positioning fixture body 1 through the shell 3 and the abutting block 2 until reaching the extending limit of the movable rod 5, then the two third motors 13 synchronously drive the abutting block 2 to rotate, then all parts drive the workpiece to be close to the positioning fixture body 1 from the container until contacting with the travel switch 7, then the positioning fixture body 1 clamps the workpiece, and then all parts reset.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. CNC positioning fixture, including positioning fixture body (1), its characterized in that: the positioning fixture comprises a positioning fixture body (1), wherein a long rod (4) is fixedly embedded in the bottom of the positioning fixture body, a travel groove (10) is formed in one side of the top of the long rod (4), a first motor (9) and a second motor (12) are fixedly connected to the inside of the long rod (4), a two-way screw rod (11) is fixedly connected to the driving end of the second motor (12), the two-way screw rod (11) vertically penetrates through the long rod (4) and extends to the inside of the travel groove (10) and is in rotary connection with the long rod (4), two movable cylinders (6) are symmetrically connected to the outer surface of the two-way screw rod (11) through threads, a lifting assembly is mounted between the two movable cylinders (6) and a driving shaft of the first motor (9), a shell (3) is fixedly connected to the movable end of the lifting assembly, a third motor (13) is fixedly connected to the inside of the shell (3), and the driving shaft of the two third motor (13) penetrates through the shell (3) and is fixedly connected with a butt block (2).

2. A CNC positioning fixture according to claim 1, wherein: the two lifting assemblies comprise mounting seats (16), the mounting seats (16) are fixedly connected with the movable barrels (6), the mounting seats (16) penetrate through and are rotationally connected with unidirectional screw rods (17), the outer surfaces of the unidirectional screw rods (17) are in threaded connection with movable rods (5), and the movable rods (5) are in sliding connection with the movable barrels (6) and are fixedly connected with adjacent shells (3).

3. A CNC positioning fixture according to claim 2, wherein: the transmission assembly comprises a spline shaft (8), the spline shaft (8) is rotationally connected inside the travel groove (10) and fixedly connected with a driving shaft of the first motor (9), and the spline shaft (8) vertically penetrates through the outer surface of the movable barrel (6).

4. A CNC positioning fixture according to claim 3, wherein: the inside of two movable cylinders (6) is all rotated and is connected with axle sleeve (14), and axle sleeve (14) slip cap is established in the surface of integral key shaft (8), and the surface of two axle sleeve (14) is all fixedly connected with first bevel gear (15).

5. The CNC positioning fixture of claim 4, wherein: the outer surfaces of the two first bevel gears (15) are respectively connected with a second bevel gear (18) in a meshed mode, and the second bevel gears (18) are fixedly connected with adjacent unidirectional screw rods (17).

6. A CNC positioning fixture according to claim 1, wherein: the two movable cylinders (6) are both in sliding connection with the travel groove (10).

7. A CNC positioning fixture according to claim 1, wherein: the inner surface of the positioning clamp body (1) is fixedly connected with a travel switch (7).