Positioning device for lathe machining

Abstract

The utility model relates to the technical field of lathe equipment, in particular to a positioning device for lathe machining, which comprises a taper sleeve, the taper sleeve is mounted in a spindle taper hole of a machine tool shell, axial force is applied by an adjusting screw mounted in the taper sleeve to realize axial positioning of a workpiece, the problem of axial movement in turning and cutting-off processes is solved, and machining precision is improved. The machining precision is improved, the length of a workpiece is prolonged, the taper of the outer conical surface of the taper sleeve is consistent with that of a spindle taper hole of a machine tool shell, and interference fit is adopted to absorb axial force; the adjusting screw comprises a threaded section and a smooth section, a positioning end face is mounted at the end of the adjusting screw, and a circular positioning hole is formed in one end of the taper sleeve. According to the positioning device for lathe machining, the taper sleeve is installed in the main shaft taper hole of the lathe shell, axial force is applied through the adjusting screw rod, and stable axial positioning of a workpiece in the machining process is achieved. By means of the design, the problem that a workpiece is prone to axial movement in turning, cutting-off and other operations of a traditional positioning device is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of lathe equipment technology, and more specifically, to a positioning device for lathe machining. Background Technology

[0002] In lathe machining, the positioning accuracy of the workpiece directly affects the quality of the machined parts and the machining efficiency. Traditional lathe positioning devices typically use simple clamping mechanisms or locating pins to fix and position the workpiece. However, these traditional methods often have shortcomings when dealing with long workpieces or scenarios requiring high-precision machining.

[0003] Specifically, traditional positioning devices may not be effective in preventing axial movement of the workpiece during machining, especially during operations such as turning and cutting. This movement can lead to a decrease in the surface quality of the machined part, difficulty in ensuring dimensional accuracy, and may even cause safety accidents such as the workpiece flying out. In addition, adjusting the length or positioning position of the workpiece using traditional positioning devices is relatively cumbersome and time-consuming, reducing machining efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning device for lathe machining, so as to solve the problem that the traditional positioning device mentioned in the background art may not be able to effectively prevent the axial movement of the workpiece during the machining process, especially when performing turning, cutting and other operations. This movement will lead to a decrease in the surface quality of the machined part, difficulty in ensuring dimensional accuracy, and may even cause safety accidents such as the workpiece flying out.

[0005] To achieve the above objectives, this utility model provides a positioning device for lathe machining, including a tapered sleeve. The tapered sleeve is installed inside the spindle tapered hole of the machine tool housing. Axial force is applied by an adjusting screw installed inside the tapered sleeve to achieve axial positioning of the workpiece, solving the problem of axial movement during turning and cutting, improving machining accuracy and extending the workpiece length. The outer tapered surface of the tapered sleeve has the same taper as the spindle tapered hole of the machine tool housing, and an interference fit is used to absorb axial force. The adjusting screw includes a threaded section and a smooth section. A positioning end face is installed at the end of the adjusting screw. A circular positioning hole is provided at one end of the tapered sleeve for positioning the adjusting screw.

[0006] Preferably, a nylon retaining sleeve is provided at the step of the tapered sleeve, the inner hole of the nylon retaining sleeve is threaded, and the outer side is provided with a step that is interference fit with the tapered sleeve.

[0007] Preferably, the adjusting screw is threaded into the inner hole of the nylon retaining sleeve, and a hexagonal nut is threaded onto the threaded section of the adjusting screw. By adjusting the distance between the positioning end face of the adjusting screw and the end of the nylon retaining sleeve, the length of the workpiece can be extended; after adjustment, it is locked and fixed by the hexagonal nut.

[0008] Preferably, the machine tool housing is equipped with a chuck and a self-centering jaw at the end near the workpiece.

[0009] Preferably, the end of the machine tool housing away from the spindle tapered hole is provided with a spindle straight hole.

[0010] Preferably, the positioning hole is adapted to the size of the smooth section of the adjusting screw.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] In this lathe machining positioning device, a tapered sleeve is installed inside the spindle tapered hole of the machine tool housing, and an axial force is applied using an adjusting screw to achieve stable axial positioning of the workpiece during machining. This design effectively solves the problem of axial movement of the workpiece during turning, cutting, and other operations using traditional positioning devices, significantly improving the surface quality and dimensional accuracy of the machined parts.

[0013] The outer tapered surface of the tapered sleeve and the spindle tapered hole of the machine tool housing are interference-fitted, which can absorb axial force and further enhance positioning stability. At the same time, the design of the adjusting screw makes the application of axial force more precise and controllable, thereby improving the overall machining accuracy.

[0014] By adjusting the threaded engagement between the adjusting screw and the nylon retaining sleeve, and by tightening the hexagonal nut, the distance between the positioning end face of the adjusting screw and the end of the nylon retaining sleeve can be easily adjusted, thereby extending the workpiece length or adjusting its positioning position. This design greatly simplifies the operation process and improves processing efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the conical sleeve in this utility model;

[0017] Figure 3 This is a schematic diagram of the nylon fixing sleeve in this utility model;

[0018] Figure 4 This is a schematic diagram of the adjusting screw in this utility model;

[0019] The meanings of the labels in the diagram are as follows:

[0020] 1. Tapered sleeve; 11. Positioning hole; 2. Nylon retaining sleeve; 3. Adjusting screw; 31. Threaded section; 32. Smooth section; 33. Positioning end face; 4. Hexagonal nut; 5. Machine tool housing; 51. Spindle taper hole; 52. Spindle straight hole; 6. Chuck; 7. Self-centering jaws; 8. Workpiece. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides a positioning device for lathe machining, such as... Figures 1-4 As shown, the machine tool housing 5 includes a tapered sleeve 1, which is installed inside the spindle tapered hole 51 of the machine tool housing 5. An axial force is applied by an adjusting screw 3 installed inside the tapered sleeve 1 to achieve axial positioning of the workpiece 8, solving the problem of axial movement during turning and cutting, improving machining accuracy, and extending the length of the workpiece 8. The outer tapered surface of the tapered sleeve 1 matches the taper of the spindle tapered hole 51 of the machine tool housing 5, and an interference fit is used to absorb axial force. The adjusting screw 3 includes a threaded section 31 and a smooth section 32. A positioning end face 33 is installed at the end of the adjusting screw 3. A circular positioning hole 11 is provided at one end of the tapered sleeve 1 for positioning the adjusting screw 3. Through the structural design of the tapered sleeve 1 installed inside the spindle tapered hole 51 of the machine tool housing 5, and by utilizing the adjusting screw 3 (including the threaded section 31 and the smooth section 32) installed inside the tapered sleeve 1 to apply axial force, stable axial positioning of the workpiece 8 is achieved. This design effectively solves the problem of axial movement of the workpiece 8 during turning and cutting, significantly improving machining accuracy. Meanwhile, the outer tapered surface of the tapered sleeve 1 matches the taper of the spindle tapered hole 51 of the machine tool housing 5, and an interference fit is used, which can effectively absorb axial force and enhance positioning stability. In addition, the positioning end face 33 installed at the end of the adjusting screw 3 matches the circular positioning hole 11 at one end of the tapered sleeve 1, which further ensures the accuracy and reliability of positioning, and also facilitates the extension of the length of the workpiece 8 or the change of its positioning position by adjusting the adjusting screw 3, thus meeting the needs of high-precision lathe machining.

[0023] In this embodiment, a nylon retaining sleeve 2 is provided at the step of the tapered sleeve 1. The inner hole of the nylon retaining sleeve 2 is threaded, and the outer side is provided with a step that interferes with the tapered sleeve 1. The design of the nylon retaining sleeve 2 to interfere with the tapered sleeve 1 enhances the fixing stability of the tapered sleeve 1 within the spindle tapered hole 51 of the machine tool housing 5. The threaded inner hole of the nylon retaining sleeve 2 provides a basis for the installation and adjustment of the adjusting screw 3.

[0024] Specifically, the adjusting screw 3 is threaded into the inner hole of the nylon retaining sleeve 2. A hexagonal nut 4 is threaded onto the threaded section 31 of the adjusting screw 3. By adjusting the distance between the positioning end face 33 of the adjusting screw 3 and the end of the nylon retaining sleeve 2, the length of the workpiece 8 can be extended. After adjustment, the hexagonal nut 4 is used to lock and fix the screw. The threaded fit design between the adjusting screw 3 and the nylon retaining sleeve 2 allows the adjusting screw 3 to move easily along the axial direction. By adjusting the distance between the positioning end face 33 and the end of the nylon retaining sleeve 2, the length of the workpiece 8 can be extended or its positioning position adjusted. The locking and fixing of the hexagonal nut 4 ensures the stability after adjustment and prevents the adjusting screw 3 from loosening during processing.

[0025] Furthermore, a chuck 6 and a self-centering jaw 7 are installed on the end of the machine tool housing 5 near the workpiece 8. The installation of the chuck 6 and the self-centering jaw 7 provides additional clamping and positioning support for the workpiece 8, enhances the stability of the workpiece 8 during the machining process, and prevents the workpiece 8 from shaking or shifting.

[0026] Furthermore, a spindle straight hole 52 is provided at the end of the machine tool housing 5 away from the spindle tapered hole 51. The design of the spindle straight hole 52 provides space for the installation or connection of other components or accessories of the machine tool, increasing the functionality and expandability of the machine tool.

[0027] Furthermore, the positioning hole 11 is adapted to the size of the smooth section 32 of the adjusting screw 3. The adaptation of the positioning hole 11 to the size of the smooth section 32 of the adjusting screw 3 ensures the accurate positioning and stable installation of the adjusting screw 3 within the tapered sleeve 1, thereby improving the overall accuracy and stability of the positioning device.

[0028] In use, the positioning device for lathe machining of this utility model first installs the tapered sleeve 1 inside the spindle tapered hole 51 of the machine tool housing 5. Its outer tapered surface matches the taper of the spindle tapered hole 51, and an interference fit is used. This design allows the tapered sleeve 1 to be firmly fixed inside the spindle tapered hole 51, while effectively absorbing the axial force generated during machining, thus enhancing the stability of positioning.

[0029] The adjusting screw 3 is installed inside the tapered sleeve 1 and includes a threaded section 31 and a smooth section 32. A positioning end face 33 is installed at the end of the adjusting screw 3, which mates with a circular positioning hole 11 at one end of the tapered sleeve 1. By rotating the adjusting screw 3, an axial force can be applied, enabling the workpiece 8 to achieve stable axial positioning. This design effectively solves the problem of axial movement of the workpiece 8 during turning and cutting processes, significantly improving machining accuracy.

[0030] A nylon retaining sleeve 2 is provided at the step of the tapered sleeve 1. The inner hole of the nylon retaining sleeve 2 is threaded and the outer hole is interference-fitted with the tapered sleeve 1. The design of the nylon retaining sleeve 2 enhances the stability of the tapered sleeve 1 in the spindle taper hole 51 of the machine tool housing 5, and at the same time provides a basis for the installation and adjustment of the adjusting screw 3.

[0031] The adjusting screw 3 is threaded into the inner hole of the nylon retaining sleeve 2, and a hexagonal nut 4 is threaded onto the threaded section 31 of the adjusting screw 3. By rotating the adjusting screw 3, the distance between its positioning end face 33 and the end of the nylon retaining sleeve 2 can be adjusted, thereby extending the length of the workpiece 8 or adjusting its positioning position. After adjustment, the adjusting screw 3 is locked in place by tightening the hexagonal nut 4 to prevent it from loosening during processing.

[0032] A chuck 6 and a self-centering jaw 7 are mounted on the end of the machine tool housing 5 near the workpiece 8. The chuck 6 and the self-centering jaw 7 provide additional clamping and positioning support for the workpiece 8, enhancing the stability of the workpiece 8 during machining and preventing the workpiece 8 from shaking or shifting.

[0033] The machine tool housing 5 has a spindle straight hole 52 at the end away from the spindle tapered hole 51. The spindle straight hole 52 provides space for the installation or connection of other parts or accessories of the machine tool, increasing the functionality and expandability of the machine tool.

[0034] The positioning hole 11 is sized to match the smooth section 32 of the adjusting screw 3, ensuring accurate positioning and stable installation of the adjusting screw 3 within the tapered sleeve 1. This design improves the overall accuracy and stability of the positioning device.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A positioning device for lathe machining, comprising a tapered sleeve (1), characterized in that: The tapered sleeve (1) is installed in the spindle tapered hole (51) of the machine tool housing (5). The axial force is applied by the adjusting screw (3) installed inside the tapered sleeve (1) to achieve axial positioning of the workpiece (8), solve the problem of axial movement during turning and cutting, improve machining accuracy and extend the length of the workpiece (8). The outer tapered surface of the tapered sleeve (1) is consistent with the taper of the spindle tapered hole (51) of the machine tool housing (5) and an interference fit is used to absorb the axial force. The adjusting screw (3) includes a threaded section (31) and a smooth section (32). The end of the adjusting screw (3) is equipped with a positioning end face (33). One end of the tapered sleeve (1) is provided with a circular positioning hole (11) for positioning the adjusting screw (3).

2. The positioning device for lathe machining according to claim 1, characterized in that: A nylon retaining sleeve (2) is provided at the step of the tapered sleeve (1). The inner hole of the nylon retaining sleeve (2) is threaded, and the outer side is provided with a step that is interference fit with the tapered sleeve (1).

3. The positioning device for lathe machining according to claim 2, characterized in that: The adjusting screw (3) is threaded into the inner hole of the nylon retaining sleeve (2). A hexagonal nut (4) is threaded onto the threaded section (31) of the adjusting screw (3). By adjusting the distance between the positioning end face (33) of the adjusting screw (3) and the end of the nylon retaining sleeve (2), the length of the workpiece (8) can be extended. After adjustment, the hexagonal nut (4) is used to lock and fix the workpiece.

4. The positioning device for lathe machining according to claim 1, characterized in that: The machine tool housing (5) is equipped with a chuck (6) and a self-centering jaw (7) at the end near the workpiece (8).

5. The positioning device for lathe machining according to claim 1, characterized in that: The machine tool housing (5) has a spindle straight hole (52) at one end away from the spindle tapered hole (51).

6. The positioning device for lathe machining according to claim 1, characterized in that: The positioning hole (11) is adapted to the size of the smooth section (32) of the adjusting screw (3).

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