CN220312569U - Machining fixture suitable for machining two-angle plane products - Google Patents

Abstract

The machining fixture is characterized in that a group of lower guide rails are arranged on the upper surface of a bottom plate, a group of upper guide rails are arranged below a rotating fixing plate, a rotating connection mechanism is arranged at the right end of the bottom plate, a plurality of limiting blocks and a plurality of clamping blocks are further arranged on the side surface of the rotating fixing plate, and a plurality of cushion blocks are arranged on the rotating fixing plate.

Description

Machining fixture suitable for machining two-angle plane products

Technical Field

The utility model belongs to the technical field of machining, and particularly relates to a machining fixture suitable for machining two-angle plane products.

Background

Certain products with larger plane areas often have two different space angles, and aiming at the processing of the products, five-axis processing centers and one set of clamps are adopted for processing in the past, or four-axis processing centers and two sets of combined clamps are adopted for processing, so that the processing of the plane products with two space angles can be completed and the precision of the plane products with two space angles can be ensured. The product cannot be accurately machined by adopting the four-axis machining center and one set of clamp, the machining cost is higher by adopting the five-axis machining center equipment, and if the product is machined by adopting the four-axis machining center and two sets of combined clamps, the working procedure is complex, the productivity is lower, and the mass production is restricted.

The utility model discloses a machining fixture with the application number of CN200920236916.1, which comprises a bottom plate, a fixed middle bridge plate fixedly connected with the bottom plate, a fine tuning middle bridge plate arranged in parallel with the fixed middle bridge plate, and an angle fine tuning device for connecting the fixed middle bridge plate and the fine tuning middle bridge plate. The middle bridge plate can be finely adjusted to rotate by a certain angle through the angle adjustment fine adjustment device, so that the special-shaped long shaft product can be processed on normal bodies with different space angles in the four-axis processing center, and the rotation angle of the special-shaped long shaft product can be accurately adjusted through the angle fine adjustment device, so that the processing precision is ensured. The utility model provides a technical teaching that a legal body with different space angles can be processed in a four-axis processing center, however, by reading the specification and the drawing of the specification, the structure of the utility model is complex, and especially, a first clamping seat and a second clamping seat for clamping a special-shaped long-axis product are arranged on a fine-tuning middle bridge plate, the first clamping seat comprises an inner expansion cylinder, an inner expansion pin connected with a piston rod of the inner expansion cylinder, an inner expansion sleeve sleeved on the inner expansion pin and used for expanding the first end of the special-shaped long-axis product, and the second clamping seat is provided with a taper pin used for extending into the second end of the special-shaped long-axis product, and the taper pin is provided with a driving oil cylinder for driving the taper pin to axially move.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art, and provides a machining fixture which has a simple structure and can accurately machine two different space angle plane products by adopting a four-axis machining center and a set of fixtures, and is suitable for machining the two angle plane products.

The technical scheme adopted by the utility model comprises a bottom plate and a rotary fixing plate, wherein a group of lower guide rails are arranged on the bottom plate, a group of upper guide rails are arranged on the lower surface of the rotary fixing plate, which corresponds to the group of lower guide rails on the bottom plate, a stepped mounting hole is processed at the right end of the bottom plate, an upper bearing is arranged at the upper end of a boss of the stepped mounting hole, a lower bearing is arranged at the lower end of the boss of the stepped mounting hole, a bearing pad is arranged between the upper bearing and the lower bearing, and a fixing piece is arranged at the lower end of the lower bearing; the right end of the rotary fixing plate is provided with a second screw mounting hole corresponding to the position of the stepped mounting hole, a rotary pin mounting groove is formed in the lower surface of the rotary fixing plate, a rotary pin is mounted in the rotary pin mounting groove, the rotary pin is fixedly connected with the rotary fixing plate through a second screw, the rotary pin is a stepped rotary pin, the small diameter of the rotary pin is inserted into an upper bearing, a bearing pad and a lower bearing, a first screw connecting hole is correspondingly formed in the fixing plate and the rotary pin, a first screw is mounted in the first screw connecting hole, and the fixing plate is fixedly connected with the rotary pin through the first screw.

The side face of the rotary fixing plate is also provided with a plurality of limiting blocks and a plurality of clamping blocks, and a plurality of cushion blocks are arranged on the rotary fixing plate.

The left end and the right end of the bottom plate are also provided with a plurality of connecting holes for connecting with the machine.

Compared with the prior art, the utility model has the beneficial effects that:

(1) According to the utility model, through the rotary connecting mechanism, the product processing of two space plane angles is completed on the four-axis processing center through one set of clamp, the investment of five-axis processing center equipment is saved, and the investment cost is greatly reduced.

(2) The fixture provided by the utility model can be manually rotated through a group of upper guide rails arranged below the rotary fixing plate, a group of lower guide rails arranged above the bottom plate and the rotary connecting mechanism, and has the advantages of simple structure, low failure rate, larger rotatable angle range and wider application range, and can be suitable for processing two-angle plane products with a plurality of different included angles by adjusting the rotation angles according to different products, so that the processing cost is saved.

(3) The structure of the limiting block, the clamping block, the cushion block and the like for fixing the workpiece can jointly finish the fine adjustment of the positions of the two-angle plane products, and the positions of the two-angle plane products can be accurately adjusted, so that the processing precision of the two-angle plane products is ensured.

Drawings

Figure 1 is an exploded view of the structure of the present utility model,

figure 2 is a schematic view of the structure of the rotary joint mechanism of the present utility model,

figure 3 is a schematic view of the structure of the machined first plane of the present utility model,

figure 4 is a top view of figure 3,

figure 5 is a schematic view of the structure of the machined second plane of the present utility model,

fig. 6 is a top view of fig. 5.

In the figure:

1. 1-1 parts of a bottom plate, 1-2 parts of a stepped mounting hole, 1-2 parts of a connecting hole,

2. a lower guide rail is arranged on the lower guide rail,

3. the upper guide rail is provided with a plurality of guide rails,

4. a fixed plate is rotated, 4-1, a second screw mounting hole,

5. a fixing piece, a first screw,

7. the rotation pin, 8. The second screw,

9. an upper bearing, 10. Bearing pads,

11. a lower bearing, 12, a limiting block,

13. the clamping block, 14. The cushion block,

15. a machine table connecting seat, 16. A workpiece,

16-1, a first plane, 16-2, a second plane,

17. a machine.

Description of the embodiments

The present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the technical scheme adopted by the utility model comprises a bottom plate 1 and a rotary fixing plate 4, wherein a group of lower guide rails 2 are arranged on the bottom plate 1, a group of upper guide rails 3 are arranged below the rotary fixing plate 4 and corresponding to a group of lower guide rails 2 on the bottom plate 1, a stepped mounting hole 1-1 is processed at the right end of the bottom plate 1, an upper bearing 9 is arranged at the upper end of the bulge of the stepped mounting hole 1-1, a lower bearing 11 is arranged at the lower end of the bulge of the stepped mounting hole 1-1, a bearing pad 10 is arranged between the upper bearing 9 and the lower bearing 11, and a fixing piece 5 is arranged at the lower end of the lower bearing 11; a second screw mounting hole 4-1 is formed at the right end of the rotary fixing plate 4 corresponding to the position of the stepped mounting hole 1-1, a rotary pin mounting groove is formed below the rotary fixing plate 4 and a rotary pin 7 is mounted in the rotary pin mounting groove, the rotary pin 7 is fixedly connected with the rotary fixing plate 4 through a second screw 8, the rotary pin 7 is a stepped rotary pin, the small diameter of the rotary pin 7 is inserted into an upper bearing 9, a bearing pad 10 and a lower bearing 11, a first screw connecting hole is correspondingly formed on the fixing plate 5 and the rotary pin 7 and is provided with a first screw 6 therein, the fixing plate 5 and the rotary pin 7 are fixedly connected through the first screw 6, further, a group of lower guide rails 2 mounted on the upper surface of the base plate 1 comprises 3 arc-shaped plane guide rails and 1 rectangular plane guide rails which take the center of the stepped mounting hole 1-1 as the center, a group of upper guide rails 3 mounted below the rotary fixing plate 4 comprises 2 arc-shaped plane guide rails, 1 rectangular plane guide rails and 1 rectangular plane guide rails which take the center of the stepped mounting hole 1-1 as the center, and a group of lower guide rails can be manually contacted with the lower guide rails in the stepped mounting hole 1 through the rotary pin mounting hole 7 in a sliding manner in the set of the upper bearing 11 and the lower guide rails which are rotatably contacted with the lower guide rails 2 according to the set rotation angle of the stepped mounting plate 4; the side of the rotary fixing plate 4 is also provided with a plurality of limiting blocks 12 and a plurality of clamping blocks 13, a plurality of cushion blocks 14 are arranged on the rotary fixing plate 4, and a plurality of connecting holes 1-2 for connecting with a machine are also arranged at the left end and the right end of the bottom plate 1.

As shown in fig. 3 and 4, in use, the utility model is fixedly connected with the connecting seat 15 of the machine table 17 through the connecting holes 1-2 at the left and right ends of the bottom plate 1, and then the workpiece 16 is arranged on the upper surface of the rotary fixing plate 4 through the front side, the rear side and the bottom surface of the plurality of limiting blocks 12, the clamping blocks 13 and the cushion blocks 14 respectively, when the first plane 16-1 of the workpiece 16 is processed, the rotary fixing plate 4 is at the first processing position shown in fig. 4, so that the first plane 16-1 of the workpiece 16 is horizontally arranged, and at the moment, the machining of the first plane 16-1 can be performed;

as shown in fig. 5 and 6, after the first plane 16-1 is machined, the rotation fixing plate 4 is manually rotated horizontally by a certain angle to the second machining position shown in fig. 6, and simultaneously the second plane 16-2 of the workpiece 16 is placed horizontally by the rotation of the machine table 17, so that the machining of the second plane 16-2 can be performed.

Claims (3)

1. The machining fixture suitable for machining the two-angle planar product comprises a bottom plate (1) and a rotary fixing plate (4), and is characterized in that a group of lower guide rails (2) are arranged on the bottom plate (1), a group of upper guide rails (3) are arranged on a group of lower guide rails (2) which are arranged on the lower surface of the rotary fixing plate (4) and correspond to the bottom plate (1), a stepped mounting hole (1-1) is formed in the right end of the bottom plate (1), an upper bearing (9) is arranged at the upper end of the protrusion of the stepped mounting hole (1-1), a lower bearing (11) is arranged at the lower end of the protrusion of the stepped mounting hole (1-1), a bearing pad (10) is arranged between the upper bearing (9) and the lower bearing (11), and a fixing piece (5) is arranged at the lower end of the lower bearing (11); the right end of the rotary fixing plate (4) is provided with a second screw mounting hole (4-1) corresponding to the stepped mounting hole (1-1), a rotary pin mounting groove is formed below the rotary fixing plate (4) and is provided with a rotary pin (7) therein, the rotary pin (7) is fixedly connected with the rotary fixing plate (4) through a second screw (8), the rotary pin (7) is a stepped rotary pin, the small diameter of the rotary pin (7) is inserted into an upper bearing (9), a bearing pad (10) and a lower bearing (11), and the fixing piece (5) and the rotary pin (7) are provided with first screw connecting holes corresponding to the first screw connecting holes and are provided with first screws (6) therein, and the fixing piece (5) and the rotary pin (7) are fixedly connected through the first screws (6).

2. Machining fixture suitable for machining two angle plane products according to claim 1, characterized in that the side of the rotating fixing plate (4) is also provided with a number of limiting blocks (12) and a number of clamping blocks (13), and the rotating fixing plate (4) is provided with a number of cushion blocks (14).

3. Machining fixture suitable for machining two angle planar products according to claim 1 or 2, characterized in that the left and right ends of the plate (1) are also provided with a number of connecting holes (1-2) for connection with the machine.