CN204148897U - A kind of numerically controlled lathe hydraulically operated fixture - Google Patents

Abstract

The utility model relates to a numerically controlled lathe hydraulic fixture, which comprises a body, a positioning block, a lever, a connecting plate and a pull rod. The main points are: the main body is composed of a positioning platform and a supporting cylinder. There are three sliding supports evenly distributed on the positioning platform, sliding pins are arranged on the sliding bearings, and three through grooves are evenly distributed on the supporting cylinder; the lever is composed of a disc and a support cylinder. Three connecting rods evenly distributed on the circumference are connected with hook-shaped pressure plates; the lever and the pull rod are connected by connecting bolts; the disc of the lever and the connecting rod are respectively slidingly connected with the supporting cylinder and the through groove, and the body is fastened on the connection plate. The fixture of the utility model has the advantages of simple structure, easy manufacture and low cost. A spherical bushing is built in the connecting hole of the lever, and the lever can rotate up and down and circumferentially around the spherical bushing. The uniformity and reliability of the tightening force are good, the loading and unloading of parts is convenient, the loading and unloading time of parts is reduced, the processing efficiency and quality of parts are improved, and the economy is good.

Description

A CNC lathe hydraulic fixture

technical field

The utility model relates to a fixture, in particular to a numerical control lathe hydraulic fixture used for special-shaped shell parts.

Background technique

In the machining industry, it is common to see the need for several cars to process special-shaped shells. The irregular points are mainly (1) the pressing surface is a rough rough surface; (2) the three pressing points are not evenly distributed. The jig for the number of vehicles rotates at high speed, so the design requirements for the jig are high, such as the jig should be light and reliable, and the dynamic balance should be good. The traditional car counting fixture adopts manual mechanical fixture, which is inconvenient for clamping. Due to the inconsistency of the operator's pressing force during each processing, the dimensional accuracy of the parts fluctuates widely, resulting in poor consistency in the size of the parts, and the labor intensity of loading and unloading is high. The time is long and the processing efficiency is low.

Contents of the invention

The purpose of this utility model is to overcome the shortcomings of the above-mentioned technologies, and provide a hydraulic clamp for CNC lathes with simple structure, low manufacturing cost, convenient use, consistent pressing force and good dynamic balance, which is used for special-shaped shell parts.

The hydraulic fixture of the numerically controlled lathe of the present invention includes a body, a positioning block, a lever, a connecting plate, and a pull rod, and is characterized in that: the body is composed of a positioning platform and a supporting cylinder, and three sliding supports are evenly distributed on the positioning platform Sliding pins are arranged on the sliding support, and three through grooves are uniformly distributed on the supporting cylinder; the lever is composed of a disc and three connecting rods uniformly distributed on the circumference, and the center of the disc is provided with a connecting hole; A hook-shaped pressing plate is connected to the connecting rod; the hook-shaped pressing plate is composed of a hook-shaped rod body and a pressure head, and the hook-shaped rod body is provided with a special-shaped long hole; the lever and the pull rod are connected by connecting bolts; the body is placed on the connecting plate, The disc of the lever is placed in the supporting cylinder of the body, and the three connecting rods are placed in the corresponding three through grooves. The disc of the lever and the connecting rod are respectively slidably connected with the supporting cylinder and the through groove, and the body is fixed with screws. Tightly on the connecting plate, the hook-shaped pressing plate is connected with the connecting rod in rotation by the rotating pin, and is slidably connected with the body through the sliding pin.

In order to better achieve the above purpose:

The positioning block is provided with circular positioning pins and diamond-shaped positioning pins to improve the positioning accuracy of parts.

A spherical bush is built in the connecting hole of the lever, and the lever can rotate up and down and circumferentially around the spherical bush to adjust the height and circumferential position of the pressure head.

The utility model hydraulic fixture for numerical control lathe has simple structure, easy manufacture and low cost. A spherical bushing is built in the connection hole of the lever, and the lever can rotate up and down and circumferentially around the spherical bushing, which is convenient for adjusting the height and circumferential direction of the hook-shaped pressing plate. Position, when used for parts with special-shaped shells, the pressing force uniformity and reliability of the pressing parts are good, the parts are easy to load and unload, the loading and unloading time of the parts is reduced, the processing efficiency and the processing quality of the parts are improved, and the economy is economical. good.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the hook-shaped pressing plate.

In the figure: 1. Diamond-shaped positioning pin, 2. Round positioning pin, 3. Positioning block, 4. Hook-shaped pressing plate, 5. Body, 6. Sliding pin, 7. Lever, 8. Rotating pin, 9. Connecting plate, 10, tie rod, 11, spherical bushing, 12, parts, 13, connecting bolt, 14, pressure head, 15, hook-shaped rod body, 16, special-shaped long hole, 17, pin hole.

Detailed ways

The hydraulic fixture for a numerically controlled lathe of the present invention comprises a body 5, a positioning block 3, a lever 7, a connection plate 9, and a pull rod 10. The body 5 is composed of a positioning platform and a supporting cylinder. There are three sliding bearings evenly distributed on the positioning platform. The sliding bearings are provided with sliding pins 6, and three through grooves are evenly distributed on the supporting cylinder. The positioning block 3 placed on the body 5 is provided with a diamond-shaped positioning pin 1 and a circular positioning pin 2 . The lever 7 is made of three connecting rods uniformly distributed on the disc and the circumference, the center of the disc is provided with a connecting hole, and a spherical bushing 11 is built in the connecting hole. The connecting rod is connected with a hook-shaped pressing plate 4, and the connecting rod and the hook-shaped pressing plate 4 are rotatably connected by a rotating pin 8. The hook-shaped pressing plate 4 is composed of a hook-shaped rod body 15 and a pressure head 14, and the hook-shaped rod body 15 is provided with a special-shaped long hole 16. Connecting bolt 13 is screwed in the internally threaded hole of pull rod 10 through spherical bushing 11, will be connected by lever 7 and pull rod 10, and lever 7 can rotate up and down around spherical bushing 11 and circumferentially. The body 5 is placed on the connection plate 9, the disc of the lever 7 is placed in the support cylinder of the body 5, the three connecting rods are placed in the corresponding three through grooves, the disc of the lever 7 and the connecting rod are respectively connected to the support cylinder. The cylinder and the through groove are slidingly connected, and the body 5 is fastened on the connection plate 9 with screws. The hook-shaped pressing plate 4 is rotationally connected with the connecting rod by a rotating pin 8 , and is slidably connected with the body 5 by a sliding pin 6 .

The numerical control lathe hydraulic fixture of the present utility model is used like this:

The hydraulic fixture of the numerically controlled lathe of the present invention is placed on the connection end face of the rotary oil cylinder on the machine tool, and the pull rod 10 is connected with the rotary oil cylinder by threads. Lift the three hook-shaped pressing plates 4, place the positioning block 3 on the positioning platform of the body 5, place the part 12 on the positioning block 3, and position it by the circular positioning pin 2 and the diamond-shaped positioning pin 1, and turn the lever up and down and circumferentially 7. Adjust the position of the indenter 14 so that the indenter 14 fits well with the part 12 to ensure the reliability of the fixture. Start the machine tool, rotate the oil cylinder to work, pull the lever 7 through the pull rod 10 to drive the hook-shaped pressing plate 4 to move downward, and press the part 12. After being clamped, the part 12 can be processed by numerical control.

By adopting the fixture, the parts 12 are conveniently assembled and disassembled, and the positioning is reliable, and the processing quality and processing efficiency of the parts 12 are improved.

Claims (3)

1. A CNC lathe hydraulic fixture, including a body (5), a positioning block (3), a lever (7), a connection plate (9), and a pull rod (10), characterized in that: the body (5) is positioned by The platform and the supporting cylinder are composed of three sliding bearings evenly distributed on the positioning platform, sliding pins (6) are arranged on the sliding bearings, and three through grooves are evenly distributed on the supporting cylinder; the lever (7) is formed by a circle The disc and three connecting rods uniformly distributed on the circumference consist of a connecting hole in the center of the disc; a hook-shaped pressing plate (4) is connected to the connecting rod; the hook-shaped pressing plate (4) consists of a hook-shaped rod body (15) and the pressure head (14), the hook-shaped rod body (15) is provided with a special-shaped long hole (16); the lever (7) and the pull rod (10) are connected by the connecting bolt (13); the body 5 is placed on the connecting plate (9), the disc of the lever (10) is placed in the support cylinder of the body 5, and the three connecting rods are placed in the corresponding three through grooves, and the disc and the connecting rod of the lever (10) are respectively connected with the support cylinder Slidingly connected with the through groove, and fasten the body 5 on the connection plate 9 with screws, the hook-shaped pressure plate (4) is connected with the connecting rod by the rotating pin (8), and is slidably connected with the body 5 through the sliding pin (6). 2. The CNC lathe hydraulic clamp according to claim 1, characterized in that: the positioning block 3 is provided with a circular positioning pin (2) and a diamond-shaped positioning pin (1). 3. The CNC lathe hydraulic clamp according to claim 1, characterized in that: a spherical bushing (11) is built into the connection hole of the lever (7), and the lever (7) can be wound around the spherical bushing (11) Rotate up and down and circumferentially to adjust the height and circumferential position of the pressure head (14).