A positioning structure for machining sleeve outer diameter on a lathe

Abstract

This utility model discloses a positioning structure for machining the outer diameter of a sleeve on a lathe, including a lathe bed and a positioning assembly. A motor housing is mounted on the top of the lathe bed, and a sleeve is disposed on the top of the lathe bed. The positioning assembly is located on the top of the lathe bed and is used to clamp and fix the sleeve. The positioning assembly includes a spindle, a positioning structure, and a drive structure. The spindle is rotatably connected to the motor housing and is located inside the sleeve. The positioning structure is located outside the spindle and is used to clamp and position the sleeve. The drive structure is located on the spindle. This utility model utilizes the cooperation of the spindle, drive structure, positioning structure, and mounting bolts. A tensioning plate clamps the inner wall of the sleeve, a support block supports the spindle, and the sleeve can be installed or removed. This facilitates integration with the lathe spindle. By clamping the sleeve from within, it achieves clamping and fixing of the sleeve, facilitating direct machining of the outer diameter of the sleeve.

Description

Technical Field

[0001] This utility model relates to the field of sleeve external cylindrical lathe machining, and in particular to a positioning structure for sleeve external cylindrical lathe machining. Background Technology

[0002] A sleeve is usually a hollow cylindrical part. Sleeves are usually made of metal or plastic. Sleeves have a variety of uses. When processing sleeves, the outer circle of the sleeve is usually machined and then processed using a lathe.

[0003] When machining sleeves on a lathe, it is usually necessary to fix the sleeve. Existing technology typically uses a limiting collar to limit and lock the outer circle of the sleeve before machining the outer circle. However, this method has the limitation that the sleeve cannot be machined at the position of the limiting collar. After machining in other positions, the limiting position of the outer circle needs to be changed before machining the obscured part. This makes the operation cumbersome and cannot be combined with the machine tool spindle, which has certain limitations. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning structure for machining sleeve outer diameter on a lathe, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a positioning structure for machining the outer diameter of a sleeve on a lathe, comprising:

[0006] The bed frame has a motor housing mounted on its top and a sleeve provided on its top.

[0007] A positioning assembly, located at the top of the bed, is used to clamp and fix the sleeve. The positioning assembly includes:

[0008] The main shaft is rotatably connected to the motor housing and is located inside the sleeve;

[0009] A positioning structure is located outside the main shaft and is used to clamp and position the sleeve.

[0010] A drive structure is located on the main shaft and is used to drive the positioning structure to move.

[0011] Preferably, the positioning component further includes:

[0012] Mounting bolts, the ends of which are threadedly connected to the side of the bed;

[0013] A support block is located on the side of the bed. The side of the support block has an arc-shaped groove that matches the spindle. The mounting bolts are threadedly inserted into the side of the support block.

[0014] Preferably, the positioning structure includes:

[0015] A fixing sleeve is fixedly fitted onto the outside of the main shaft;

[0016] The first link is located outside the fixed sleeve;

[0017] The first seat is fixedly connected to the outside of the fixed sleeve, and the first connecting rod is rotatably connected to the first seat;

[0018] A tensioning plate is located outside the main shaft and is attached to the inner wall of the sleeve. The first connecting rod is rotatably connected to the tensioning plate.

[0019] Preferably, the positioning structure further includes:

[0020] A sliding sleeve, wherein the sliding sleeve is slidably disposed outside the main shaft;

[0021] The second seat is fixedly connected to the outside of the sliding sleeve;

[0022] The second link is rotatably connected to the second seat and rotatably connected to the tension plate.

[0023] Preferably, the driving structure includes:

[0024] A hydraulic cylinder is embedded at the end of the main shaft, and a drive column is connected to the output end of the hydraulic cylinder.

[0025] A sliding groove is formed at the end of the main shaft, and the drive column is slidably inserted into the inner cavity of the sliding groove;

[0026] A drive plate is fixedly connected to the side of the drive column, and the side of the drive plate is fixedly connected to the inner wall of the sliding sleeve.

[0027] Preferably, the drive structure further includes a through groove, which is formed on the outside of the main shaft, and the drive plate is slidably inserted into the inner cavity of the through groove.

[0028] The technical effects and advantages of this utility model are as follows:

[0029] This invention utilizes the cooperation of a main shaft, a drive structure, a positioning structure, a support block, and mounting bolts. Both the drive and positioning structures are located on the main shaft. The drive structure moves the sliding sleeve, which in turn moves the second seat, causing the second connecting rod to rotate and lift the tension plate. The tension plate presses against the inner wall of the sleeve. The support block supports the main shaft and allows for the installation and removal of the sleeve. This facilitates integration with the lathe spindle. By pressing against the inside of the sleeve, it achieves clamping and fixing, enabling direct machining of the sleeve's outer diameter. This design is convenient and adaptable to sleeves of different sizes, offering broad applicability. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0031] Figure 2 This is a schematic diagram of the tensioning plate structure of this utility model.

[0032] Figure 3 This is a schematic diagram of the sliding sleeve structure of this utility model.

[0033] Figure 4 This is a front cross-sectional view of the present invention.

[0034] In the diagram: 1. Bed; 2. Motor housing; 3. Positioning assembly; 31. Spindle; 32. Hydraulic cylinder; 33. Fixing sleeve; 34. First connecting rod; 35. First seat; 36. Sliding sleeve; 37. Second seat; 38. Second connecting rod; 39. Tensioning plate; 310. Drive plate; 311. Through slot; 312. Mounting bolt; 313. Support block; 4. Sleeve. Detailed Implementation

[0035] 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.

[0036] This utility model provides, for example Figure 1-4The diagram illustrates a positioning structure for machining sleeves on an external cylindrical lathe, comprising a bed 1 and a positioning assembly 3. The bed 1 facilitates support for a motor housing 2. The motor housing 2 is mounted on the top of the bed 1, and a motor is mounted on the side of the motor housing 2. The internal transmission structure of the motor housing 2 is connected to the spindle 31. The transmission structure can be a combination of gears, which is existing technology and will not be described in detail here. A sleeve 4 is provided on the top of the bed 1. The positioning assembly 3 is located on the top of the bed 1 and is used to clamp and fix the sleeve 4. The positioning assembly 3 includes a spindle 31, a positioning structure, and a drive structure. The spindle 31 facilitates the fitting of the sleeve 4 onto the lathe. Externally, the sleeve 4 is machined to the outer diameter. An intermediate block can be installed on the outside of the positioning structure. The high concentricity of the clamping can be achieved through continuous self-correction of the true circular lathe. The positioning structure is a four-bar linkage structure, which can clamp and fix the inner wall of the sleeve 4 in four directions to increase the stability of the fixation. The drive structure is conducive to driving the positioning structure. The main spindle 31 is rotatably connected to the motor housing 2. The main spindle 31 is located inside the sleeve 4. The positioning structure is located outside the main spindle 31. The positioning structure is used to clamp and position the sleeve 4. The drive structure is located on the main spindle 31. The drive structure is used to drive the positioning structure to move.

[0037] Furthermore, the positioning assembly 3 also includes a mounting bolt 312 and a support block 313. The mounting bolt 312 facilitates the installation and removal of the support block 313, which in turn facilitates the horizontal removal of the sleeve 4 for installation and removal. The support block 313 facilitates the support of the spindle 31. The end of the mounting bolt 312 is threadedly connected to the side of the bed 1. The support block 313 is located on the side of the bed 1. The side of the support block 313 is provided with an arc-shaped groove that matches the spindle 31. The mounting bolt 312 is threadedly connected to the side of the support block 313.

[0038] Specifically, the positioning structure includes a fixed sleeve 33, a first connecting rod 34, a first seat 35, and a tensioning plate 39. The fixed sleeve 33 supports the first seat 35. The first connecting rod 34 and the first seat 35 are arranged in a circular array, and there are multiple of them. The first connecting rod 34 lifts the tensioning plate 39 to support it. The first seat 35 allows the first connecting rod 34 to rotate on it. The tensioning plate 39 abuts and limits the inner wall of the sleeve 4 to clamp and fix the sleeve 4, allowing direct access to the outside of the sleeve 4. During machining operations, the machining position of the sleeve 4 can be changed by rotating the spindle 31. The tension plate 39 is pushed by the second connecting rod 38, which in turn pushes the first connecting rod 34 to rotate. The fixed sleeve 33 is fixedly sleeved on the outside of the spindle 31. The first connecting rod 34 is located outside the fixed sleeve 33. The first seat 35 is fixedly connected to the outside of the fixed sleeve 33. The first connecting rod 34 is rotatably connected to the first seat 35. The tension plate 39 is located outside the spindle 31 and fits against the inner wall of the sleeve 4. The first connecting rod 34 is rotatably connected to the tension plate 39.

[0039] More specifically, the positioning structure also includes a sliding sleeve 36, a second seat 37, and a second connecting rod 38. The sliding sleeve 36 is beneficial for supporting the second seat 37 and the second connecting rod 38, and at the same time, it is beneficial for pushing the second connecting rod 38 to rotate, so as to push the tension plate 39 to lift up, which is convenient for clamping and fixing sleeves 4 of different sizes. The second connecting rod 38 and the second seat 37 are arranged in a ring array, and there are multiple of them. The sliding sleeve 36 is slidably sleeved on the outside of the main shaft 31. The second seat 37 is fixedly connected to the outside of the sliding sleeve 36. The second connecting rod 38 is rotatably connected to the second seat 37 and rotatably connected to the tension plate 39.

[0040] Specifically, the drive structure includes a hydraulic cylinder 32, a sliding groove, a drive plate 310, and a through groove 311. The rotation of the main shaft 31 can be set according to the rotation range of the hydraulic cylinder 32's pipeline, so that the rotation of the main shaft 31 will not affect the pipeline of the hydraulic cylinder 32. The hydraulic cylinder 32 facilitates the back-and-forth movement of the drive column to drive the drive plate 310 back and forth. The drive plate 310 facilitates the back-and-forth movement of the sliding sleeve 36, which in turn facilitates the lifting or retraction of the tension plate 39 to clamp and fix the sleeve 4. The hydraulic cylinder 32 is embedded in the end of the main shaft 31, and the output end of the hydraulic cylinder 32 is connected to the drive column. The sliding groove is opened at the end of the main shaft 31, and the drive column is slidably inserted into the inner cavity of the sliding groove. The drive plate 310 is fixedly connected to the side of the drive column, and the side of the drive plate 310 is fixedly connected to the inner wall of the sliding sleeve 36. The through groove 311 is opened on the outside of the main shaft 31, and the drive plate 310 is slidably inserted into the inner cavity of the through groove 311.

[0041] When it is necessary to clamp and fix the sleeve 4, remove the mounting bolt 312, then remove the support block 313, and place the sleeve 4 on the outside of the main shaft 31. Then, install the support block 313 in the designated position using the mounting bolt 312. At this time, the sleeve 4 is in the appropriate position. Then, start the hydraulic cylinder 32 to push the drive column to slide horizontally inside the sliding groove, thereby causing the drive plate 310 to push the sliding sleeve 36 to move. The sliding sleeve 36 pushes the second connecting rod 38 to rotate, causing the tension plate 39 to lift up. At the same time, the tension plate 39 drives the first connecting rod 34 to rotate. The tension plate 39 abuts and positions the inner wall of the sleeve 4. With the cooperation of the motor and the motor box 2, the main shaft 31 can be rotated to drive the sleeve 4 to rotate for processing.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning structure for machining the outer diameter of a sleeve on a lathe, characterized in that, include: A bed frame (1), a motor box (2) is installed on the top of the bed frame (1), and a sleeve (4) is provided on the top of the bed frame (1); A positioning component (3) is located at the top of the bed (1) and is used to clamp and fix the sleeve (4). The positioning component (3) includes: Main shaft (31), which is rotatably connected to motor housing (2), and is located inside sleeve (4); A positioning structure is located outside the main shaft (31) and is used to clamp and position the sleeve (4). A drive structure is located on the main shaft (31) and is used to drive the positioning structure to move.

2. The positioning structure for machining the outer diameter of a sleeve on a lathe according to claim 1, characterized in that, The positioning component (3) also includes: Mounting bolt (312), the end of which is threadedly connected to the side of the bed (1); Support block (313) is located on the side of the bed (1). The side of the support block (313) is provided with an arc-shaped groove that is compatible with the spindle (31). The mounting bolt (312) is threadedly connected to the side of the support block (313).

3. The positioning structure for machining the outer diameter of a sleeve on a lathe according to claim 1, characterized in that, The positioning structure includes: A fixing sleeve (33) is fixedly sleeved on the outside of the main shaft (31); The first link (34) is located outside the fixed sleeve (33); The first seat (35) is fixedly connected to the outside of the fixed sleeve (33), and the first connecting rod (34) is rotatably connected to the first seat (35); Tensioner plate (39) is located outside the main shaft (31) and is attached to the inner wall of the sleeve (4). The first connecting rod (34) is rotatably connected to the tensioner plate (39).

4. The positioning structure for machining the outer diameter of a sleeve on a lathe according to claim 3, characterized in that, The positioning structure also includes: A sliding sleeve (36) is slidably disposed outside the main shaft (31); The second seat (37) is fixedly connected to the outside of the sliding sleeve (36); The second link (38) is rotatably connected to the second seat (37) and rotatably connected to the tension plate (39).

5. The positioning structure for machining the outer diameter of a sleeve on a lathe according to claim 4, characterized in that, The driving structure includes: The hydraulic cylinder (32) is embedded in the end of the main shaft (31), and the output end of the hydraulic cylinder (32) is connected to a drive column. A sliding groove is provided at the end of the main shaft (31), and the drive column is slidably inserted into the inner cavity of the sliding groove. A drive plate (310) is fixedly connected to the side of the drive column, and the side of the drive plate (310) is fixedly connected to the inner wall of the sliding sleeve (36).

6. The positioning structure for machining the outer diameter of a sleeve on a lathe according to claim 5, characterized in that, The drive structure also includes a through groove (311), which is located outside the main shaft (31), and the drive plate (310) is slidably inserted into the inner cavity of the through groove (311).

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