Drilling clamp

Abstract

The utility model provides a drilling clamp which enables parts to have strong positioning capacity and accurate machining precision before machining. Comprising a pressing plate, an upper positioning ring, an air cylinder, an angular positioning pin, a lower positioning ring and a base. The upper part of the cylinder is connected with the pressing plate; the angular positioning pin penetrates through a transverse inner hole of the base below the pressing plate, and the angular positioning pin at the front end enters any positioning groove of the part. The designed drilling clamp device enables the pressing plate to press the three petals of the part through the air cylinder, and the clamping stability of the part is improved to a great extent. Meanwhile, accurate machining and positioning are achieved through the upper positioning ring, the lower positioning ring and the angular positioning pin. And clamping and loosening of parts can be achieved through air pressure, operation is easy and convenient, and the working efficiency is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of manufacturing technology of metal shaft parts, and relates to a fixture for drilling holes in parts. Background Technology

[0002] Drilling holes in parts reduces weight and effectively improves their functionality, thereby enhancing the overall performance of the assembled product. Therefore, drilling is one of the important and critical processes in the manufacturing of this part.

[0003] When drilling, the part needs to be fixed on the lathe using locating blocks. There are two main methods of drilling: manual drilling and CNC machine tool drilling. Manual drilling has a longer processing cycle, lower accuracy, and is more likely to damage the part. CNC machine tools offer high accuracy, high quality, are less prone to damaging parts, and have higher stability. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a drilling fixture, which is a new type of fixture with high stability for CNC machine tools, so that the parts have strong positioning ability and precise machining accuracy before processing.

[0005] The technical solution of this utility model is:

[0006] A drilling fixture, characterized in that it comprises a pressure plate, an upper positioning ring, a cylinder, an angular positioning pin, a lower positioning ring, and a base; the lower part of the base is a disc with a central hole, and the upper part of the disc is a tube with an opening on the front side; the bottom and top of the tube each have a U-shaped groove, the U-shaped groove being U-shaped with the opening facing forward; the lower positioning ring is placed in the U-shaped groove at the bottom of the tube on the disc of the base; the upper positioning ring is placed in the U-shaped groove at the top of the tube of the base; there are three pressure plates, with adjacent pressure plates spaced 120° apart, the outer end of the pressure plate is connected to the cylinder, and the middle part is connected to the upper part of the base, forming a lever structure; the upper part of the cylinder is connected to the pressure plate, and the lower part of the cylinder is mounted on the base; the angular positioning pin passes through the transverse inner hole of the base below the pressure plate, and the front end of the angular positioning pin enters any positioning groove of the part.

[0007] Furthermore, it also includes a handle; connected to the end of the angular locating pin.

[0008] Furthermore, the upper and lower positioning rings are U-shaped with openings facing forward.

[0009] Furthermore, the pressure plate is 80mm long and 23mm high. The three pressure plates simultaneously contact the upper part of the part to fix it in place.

[0010] Furthermore, the cylinder moves up and down, causing the inner side of the pressure plate to move up and down, pressing and loosening the parts.

[0011] Furthermore, the total height of the base is 403mm.

[0012] Furthermore, the diameter of the opening at the front end of the base is 104.8 mm.

[0013] Furthermore, pull the angular locating pin to perform angular positioning of the part.

[0014] Furthermore, the pressure plate 2 is connected to the cylinder 3 via a nut.

[0015] Furthermore, the upper positioning ring and the lower positioning ring fix the upper and lower parts of part 1 respectively.

[0016] Technical effects of this utility model:

[0017] The designed drilling fixture device uses a cylinder to press the three parts of the workpiece together with a pressure plate, greatly improving the stability of the clamping. Simultaneously, accurate machining positioning is achieved through upper and lower locating rings and angular locating pins. The clamping and loosening of the workpiece can be achieved using pneumatic pressure, making operation simple and convenient and significantly improving work efficiency.

[0018] 1. The main body is designed with upper and lower positioning rings and angular positioning pins, which realizes accurate positioning of parts and improves the machining accuracy of drilling.

[0019] 2. The main body is designed with three pressure plates, which respectively clamp the three parts of the part, improving clamping stability.

[0020] 3. The tightening and loosening of parts are achieved by the inward and outward sliding of the cylinder. Attached Figure Description

[0021] Figure 1 Part diagram;

[0022] Figure 2 A cross-sectional view of the clamp of this utility model;

[0023] Figure 3 A schematic diagram of the fixture of this utility model;

[0024] Figure 4 Exploded view of the structure of this utility model. Detailed Implementation

[0025] like Figure 3 As shown, the drilling fixture of this utility model includes a pressure plate 2, an upper positioning ring 3, a cylinder 4, an angular positioning pin 5, a lower positioning ring 6, a handle 8, and a base 7.

[0026] The lower part of the base 7 is a disc with a central hole, and the upper part of the disc is a tube with an opening on the front side. The bottom and top of the tube have U-shaped grooves, which are U-shaped with the opening facing forward.

[0027] The upper positioning ring 3 and the lower positioning ring 6 are U-shaped with their openings facing forward; the lower positioning ring 6 is placed in the U-shaped groove at the bottom of the tube body on the disc of the base; the upper positioning ring 3 is placed in the U-shaped groove at the top of the tube body of the base 7.

[0028] There are three pressure plates 2, with a 120° interval between adjacent pressure plates, a length of 80mm, and a total height of 23mm. All three pressure plates simultaneously contact the upper part of the part to fix it in place. The outer end of pressure plate 2 is connected to cylinder 4, and the middle part is connected to the upper part of the base, forming a lever structure.

[0029] The angular positioning pin 5 is installed in the transverse inner hole of the base below the pressure plate 2. During operation, the angular positioning pin is moved into any positioning groove of the part (located at the junction of the three lobes on the upper part of the part, a total of 3) by rotating the part, which mainly plays the role of angular positioning.

[0030] The upper part of cylinder 4 is connected to pressure plate 2. By changing the air pressure, pressure plate 2 can be moved up and down to press and loosen the parts. The lower part of cylinder 4 is mounted on a base.

[0031] The base, with a total height of 403mm, is shaped similar to a "U".

[0032] Part 1 is clamped through an opening with a diameter of 104.8 mm. A handle is designed on the left side of the angular locating pin 5. By pulling the handle, the angular locating pin is pulled to perform angular positioning.

[0033] 3D assembly exploded view as follows Figure 4 As shown, during assembly, the pressure plate 2 is connected to the cylinder 4 via a nut; the angular locating pin 5 engages with the handle, which passes through the base. (The upper locating ring 3 and the lower locating ring 6 are respectively installed in the grooves at the bottom and top of the tube body. The upper locating ring 3 and the lower locating ring 6 fix the upper and lower parts of part 1 respectively, ensuring that the part is tightly attached to them, thus achieving a positioning function.)

[0034] The operation process of this utility model fixture is as follows:

[0035] (1) Fix the base to the machine tool with bolts;

[0036] (2) Place part 1 upright into the fixture;

[0037] (3) The parts are accurately positioned by the upper positioning ring, the lower positioning ring and the angular positioning pin;

[0038] (4) The pressure plate presses the three parts of the part with air pressure through the cylinder to achieve the pressing state;

[0039] (5) The drill bit is used to drill from top to bottom.

Claims

1. A drill jig characterized by, It comprises a pressing plate (2), an upper locating ring (3), a cylinder (4), an angular locating pin (5), a lower locating ring (6), and a base (7). The base (7) is a disc with a central hole, and the upper part of the disc is a tube body, which has an opening on the front side; the bottom and top of the tube body are provided with U-shaped grooves, which are U-shaped with the opening facing forward; The lower locating ring (6) is placed in the U-shaped groove on the bottom of the tube body on the disc of the base; the upper locating ring (3) is placed in the U-shaped groove on the top of the tube body of the base (7); There are three pressing plates in total, and the interval between adjacent pressing plates is 120°; the outer end of the pressing plate (2) is connected with the cylinder (4), and the middle part is connected with the upper part of the base, forming a lever structure; The upper part of the cylinder (4) is connected with the pressing plate (2), and the lower part of the cylinder (4) is installed on the base; The angular locating pin (5) passes through the horizontal inner hole of the base below the pressing plate (2), and the front end of the angular locating pin enters the locating groove of the part.

2. A drill jig according to claim 1, wherein It also includes a handle (8) connected to the end of the angular locating pin (5).

3. A drill jig according to claim 1, wherein The upper locating ring (3) and the lower locating ring (6) are U-shaped with the opening facing forward.

4. The drill jig defined in claim 1 wherein, The length of the pressing plate is 80mm, and the total height is 23mm; the three pressing plates simultaneously contact the upper part of the part to fix the part.

5. The drill jig defined in claim 1 wherein, The cylinder (4) moves up and down, driving the inside of the pressing plate to move up and down, and pressing the part tightly and loosening it.

6. The drill jig defined in claim 1 wherein, The total height of the base is 403mm.

7. The drill jig defined in claim 1 wherein, The diameter of the opening at the front end of the base is 104.8mm.

8. The drill jig defined in claim 1 wherein, Pull the angular locating pin to perform angular positioning work on the part.

9. The drill jig defined in claim 1 wherein, The pressing plate (2) and the cylinder (4) are connected through a nut.

10. The drill jig defined in claim 1 wherein, The upper locating ring and the lower locating ring fix the upper and lower parts of the part, respectively.

Images