Axis positioning device for machine tool machined part

Abstract

The utility model belongs to the technical field of machining, and particularly relates to an axis positioning device for a machine tool machining part, which comprises a base, a vertical plate arranged on the base, a lifting slider slidably arranged on the vertical plate, an extending end transversely arranged on the lifting slider, and a positioning pin arranged at the bottom of the extending end. A pneumatic chuck coaxial with the positioning pin is fixedly arranged on the base, a disc-shaped movable tool is clamped on the pneumatic chuck, and a clamping part and a pressing part which are used for fixing a workpiece are arranged on the movable tool; a manual switch is arranged on the base and connected with the pneumatic chuck and the air source. The axis positioning device effectively solves the problems that axis positioning is difficult and clamping efficiency is low in the non-axis part machining process, through combination of the pneumatic chuck and the adjustable lifting sliding block, rapid and accurate positioning of workpieces is achieved, the machining precision and the machine tool utilization rate are improved, the production cost is reduced, and the machining efficiency is improved. And the method has remarkable market application value and economic benefit.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of machining, especially relate to a shaft positioning device for machine tool workpiece. BACKGROUND

[0002] In modern manufacturing industry, numerical control machine tool (lathe) as the core equipment of precision machining, is widely used in the efficient, high-precision cutting of shaft parts. This kind of equipment realizes the accurate control of the shape, size and surface quality of parts by accurately controlling the relative movement of the tool and workpiece. However, in the face of non-shaft parts, especially those complex shape, inconvenient direct clamping workpiece, such as tractor engine connecting rod, the traditional clamping mode faces significant challenges.

[0003] Because this kind of workpiece often lacks obvious axial symmetry characteristics, the confirmation of the shaft center position becomes particularly difficult. Traditional shaft positioning methods, such as using centering jig or tailstock and other auxiliary devices, although can solve the shaft positioning problem to a certain extent, but for irregular shape, size variable non-shaft parts, these methods often appear to be inadequate. This not only increases the difficulty and complexity of clamping, but also may lead to inaccurate positioning, and then affect the machining precision and efficiency.

[0004] In addition, due to the difficulty of workpiece clamping, the preparation time before processing is significantly prolonged, which reduces the utilization rate of machine tool and production efficiency. Especially in batch production and customized processing, this inefficient clamping method has become a key factor restricting the capacity improvement.

[0005] Therefore, there is a certain market demand to design a shaft positioning device for machine tool workpiece. SUMMARY

[0006] In view of the above technical problems, the utility model provides a shaft positioning device for machine tool workpiece to solve the above problems.

[0007] The utility model discloses a shaft positioning device for machine tool workpiece, including the base, be provided with the vertical board on the base, the vertical board is provided with the lifting sliding block of sliding, the lifting sliding block is provided with the extension end transversely, the bottom of the extension end is provided with a positioning pin, the base is fixedly provided with the pneumatic chuck of the coaxial with the positioning pin, the pneumatic chuck is clamped with the disc -shaped mobile tool, be provided with the clamping part and the compression part for fixing workpiece on the mobile tool, the base is provided with the manual switch, the manual switch is connected pneumatic chuck and gas source.

[0008] Further, the top of the extension end is provided with a vertical counterbore hole, the bottom of the extension end is provided with a pin hole suitable for a positioning pin, a through hole is arranged between the pin hole and the counterbore hole, and a connecting bolt is arranged in the counterbore hole and passes through the through hole and screws the positioning pin.

[0009] Further, the vertical plate is provided with a fixing column above the lifting slider, and a reset tension spring is arranged between the fixing column and the lifting slider.

[0010] Further, the bottom of the moving tool is provided with a weight-reducing groove.

[0011] Further, the vertical plate is provided with two slide rails suitable for the lifting slider.

[0012] Preferably, the manual switch is a pneumatic button valve.

[0013] Further, the clamping part is a jacking bolt, and the moving tool is symmetrically provided with a fixing seat, and the two fixing seats are symmetrically provided with jacking bolts.

[0014] Further, the pressing part comprises a locking bolt and a pressing block, and the locking bolt screws the moving tool after passing through the pressing block.

[0015] Compared with the prior art, the shaft center positioning device effectively solves the problems of difficult shaft center positioning and low clamping efficiency in the machining of non-shaft parts, realizes rapid and accurate positioning of the workpiece through the combination of the pneumatic chuck and the adjustable lifting slider, improves the machining precision and the utilization rate of the machine tool, reduces the production cost, and has remarkable market application value and economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of the utility model;

[0017] Figure 2 It is a left view of the utility model;

[0018] Figure 3 It is a partial sectional view of the utility model;

[0019] Figure 4 It is a plan view of the moving tool after fixing the workpiece;

[0020] Figure 5 It is a sectional view of the moving tool.

[0021] In the figure: 1, base; 2, vertical plate; 3, lifting slider; 4, extension end; 5, positioning pin; 6, pneumatic chuck; 7, mobile tool; 8, manual switch; 9, countersunk hole; 10, pin hole; 11, connecting bolt; 12, reset tension spring; 13, weight reduction groove; 14, slide rail; 15, jacking bolt; 16, fixed seat; 17, locking bolt; 18, pressing block; 19, workpiece. DETAILED DESCRIPTION

[0022] In order to better understand the present application, the embodiments of the present application will be explained in detail below with reference to the drawings. Figures 1 to 5

[0023] It should be noted that the "front, rear, left, right, top and bottom" directions described in the text are based on the "front, rear, left, right, top and bottom" directions in the drawings. Figure 1

[0024] The axial positioning device for machine tool machining parts of the present application comprises a base 1, a vertical plate 2 is arranged on the base 1, and slide rails 14 are arranged on the vertical plate 2. These slide rails 14 not only ensure the smooth sliding of the lifting slider 3, but also improve the stability and durability of the device. The lifting slider 3 moves up and down on the vertical plate 2 through the slide rails 14. This design allows flexible adjustment according to the height of the workpiece 19.

[0025] The extension end 4 of the lifting slider 3 is designed with a countersunk hole 9 and a pin hole 10. These hole positions are designed for the installation of a positioning pin 5. The positioning pin 5 passes through the through hole and is screwed into the countersunk hole 9 through the connecting bolt 11, ensuring that the positioning pin 5 can be firmly fixed at the bottom of the extension end 4. The main function of the positioning pin 5 is to serve as the axial positioning point of the workpiece 19, ensuring the accuracy and stability of the workpiece 19 during processing.

[0026] On the base 1, a pneumatic chuck 6 is fixedly arranged coaxially with the positioning pin 5. The pneumatic chuck 6 is connected to the air source through the manual switch 8 (preferably a pneumatic button valve), which can achieve clamping and releasing of the disc-shaped mobile tool 7. The mobile tool 7 is designed to be very flexible, and it is provided with a clamping part and a pressing part for fixing the workpiece 19. The clamping part is a jacking bolt 15, and through the jacking bolt 15 on the two symmetrically arranged fixed seats 16, the workpiece 19 can be firmly fixed on the mobile tool 7. The pressing part includes a locking bolt 17 and a pressing block 18, and the locking bolt 17 passes through the pressing block 18 and is screwed to the mobile tool 7, which can further ensure that the workpiece 19 will not shake or displace during processing.

[0027] ​​In order to increase the flexibility and convenience of the device, a fixed column and a reset tension spring 12 are arranged on the vertical plate 2. The fixed column is located above the lifting slider 3, and the reset tension spring 12 is connected between the fixed column and the lifting slider 3. Such design can automatically reset through the elastic force of the reset tension spring 12 after the lifting slider 3 is lowered, thereby improving the operation efficiency of the device.

[0028] In addition, in order to reduce the weight of the mobile tool 7, a weight reduction groove 13 is arranged at the bottom of the mobile tool 7.

[0029] The use mode and principle of the utility model are as follows:

[0030] Firstly, the mobile tool 7 is placed on the pneumatic chuck 6, and the pneumatic chuck 6 is controlled to clamp the mobile tool 7 through the manual switch 8. Then, the workpiece 19 is placed on the mobile tool 7, and the lifting slider 3 is manually pressed to slide downwards, the positioning pin 5 is inserted into the positioning hole or the casting hole of the workpiece 19, and it is confirmed that the workpiece 19 can be aligned with the shaft center of the mobile tool 7. Next, the workpiece 19 is locked on the mobile tool 7 through the clamping part and the pressing part. Then, the lifting slider 3 is released, and the lifting slider 3 is reset through the reset tension spring 12. Finally, the mobile tool 7 is released through the manual switch 8, the mobile tool 7 with the fixed workpiece 19 is installed on the machine tool chuck, and the subsequent cutting processing is carried out. After the processing is completed, the workpiece 19 is taken off from the chuck of the machine tool together with the mobile tool 7, and the new workpiece 19 to be processed is replaced for continuous processing. By using two or more mobile tools 7, the preparation work of the next workpiece 19 to be processed can be carried out during the machine tool processing, the new workpiece 19 to be processed is installed on the mobile tool 7 in advance, and the mobile tools 7 are used alternately, so that the overall processing efficiency of the machine tool is improved.

[0031] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified and limited, it should be explained that the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, or indirect connection through an intermediate medium, and the specific meaning of the above terms can be understood by those skilled in the art according to the specific circumstances.

[0032] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A spindle positioning device for machined parts, characterized in that: The device includes a base (1), on which a vertical plate (2) is provided, and a lifting slider (3) is slidably provided on the vertical plate (2). A protruding end (4) is provided horizontally on the lifting slider (3), and a positioning pin (5) is provided at the bottom of the protruding end (4). A pneumatic chuck (6) coaxial with the positioning pin (5) is fixedly provided on the base (1). A disc-shaped movable fixture (7) is clamped on the pneumatic chuck (6). The movable fixture (7) is provided with a clamping part and a pressing part for fixing the workpiece (19). A manual switch (8) is provided on the base (1). The manual switch (8) is connected to the pneumatic chuck (6) and an air source.

2. The axis positioning device for machined parts as described in claim 1, characterized in that: The top of the protruding end (4) is provided with a vertical countersunk hole (9), and the bottom of the protruding end (4) is provided with a pin hole (10) adapted to the positioning pin (5). A through hole is provided between the pin hole (10) and the countersunk hole (9). A connecting bolt (11) is provided in the countersunk hole (9) that passes through the through hole and is screwed to the positioning pin (5).

3. The axis positioning device for machined parts as described in claim 1, characterized in that: A fixed column is provided on the upright plate (2) above the lifting slider (3), and a reset spring (12) is provided between the fixed column and the lifting slider (3).

4. The axis positioning device for machined parts as described in claim 1, characterized in that: The bottom of the movable tooling (7) is provided with a weight reduction groove (13).

5. The axis positioning device for machined parts as described in claim 1, characterized in that: The upright plate (2) is provided with two slide rails (14) that are adapted to the lifting slider (3).

6. The axis positioning device for machined parts as described in claim 1, characterized in that: The manual switch (8) is a pneumatic toggle valve.

7. The axis positioning device for machined parts as described in claim 1, characterized in that: The clamping part is a tightening bolt (15), and the movable tool (7) is symmetrically provided with fixed seats (16), and the two fixed seats (16) are symmetrically provided with tightening bolts (15).

8. The axis positioning device for machined parts as described in claim 1, characterized in that: The clamping part includes a locking bolt (17) and a pressure block (18), and the locking bolt (17) passes through the pressure block (18) and is then screwed onto a movable fixture (7).

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