Electronic expansion center and processing machine tool
By designing the electronic expansion top on the top of a large machining lathe, using elastic blocks and sensors to detect the radial movement amount, the slipping problem caused by poor coordination with the workpiece is solved, and precise control of clamping force is achieved, avoiding machining errors and workpiece damage.
Patent Information
- Application Number
- CN202422201185.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-09
AI Technical Summary
During the processing process, large-scale machining lathes often cause slippage due to poor coordination between the top and the workpiece, resulting in machining errors or workpiece damage.
An electronic expansion top is designed, using a conical top and an elastic block to detect the radial movement of the elastic block through a sensor to achieve precise control of the clamping force between the top and the workpiece.
It effectively avoids slippage, reasonably controls the clamping force of the workpiece, reduces processing errors and prevents workpiece damage.
Smart Images
Figure CN223028495U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of machine tools, in particular to an electronic expansion center and a machining machine tool. Background Art
[0002] For large machining lathes, workpieces are often positioned by means of centers. At present, there are still many problems of slipping after the current centers are well matched with the workpieces, resulting in machining errors during the machining process, or excessive clamping force, causing damage or deformation to the workpieces.
[0003] Although increasing the roughness of the center can reduce the probability of slipping, and ensuring the tightening force through controllable hydraulic pressure, the above methods will vary for workpieces of different specifications.
[0004] In view of the above problems, the utility model designs and manufactures an electronic expansion center and a machining machine tool to overcome the above defects. Content of the Utility Model
[0005] For the problems existing in the prior art, an electronic expansion center and a machining machine tool provided by the utility model not only ensure the clamping force between the center and the pipe fitting to be clamped, but also improve the anti-slip effect.
[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: an electronic expansion center includes a conical center. A central channel is provided in the center of the conical center. A radial groove penetrates through the side wall of the conical center. An elastic block is arranged in the radial groove, and the elastic block has a tendency to move away from the central channel along the radial groove.
[0007] An inner concave inclined surface is arranged on one side of the elastic block close to the large end of the conical center or on one side close to the small end of the conical center. A sensor is arranged in the central channel, and the sensor can judge the radial movement amount of the elastic block by contacting with the inner concave inclined surface.
[0008] Preferably, a limiting boss is arranged on the outer surface of the elastic block in the radial direction.
[0009] Preferably, a conical hole matching the conical center is arranged at the end of the workpiece to be machined. A limiting groove is arranged along the generatrix direction of the conical hole on the conical hole, and the width of the limiting groove is the same as the width of the limiting boss.
[0010] Preferably, a spring fixing block is arranged in the central channel, the spring fixing block is fixed in the conical center, and a plurality of compression springs are arranged between the spring fixing block and the elastic block.
[0011] Preferably, spring fixing holes are arranged on both the spring fixing block and the elastic block, and both ends of the compression spring are respectively positioned in the spring fixing holes of the spring fixing block and the elastic block.
[0012] Preferably, the radial groove penetrates through the other side wall of the conical tip in the reverse direction, and the spring fixing block is fixed in the radial groove of the other side wall.
[0013] Preferably, a through guiding long groove is provided on the elastic block, a guiding column is provided in the guiding long groove, the guiding column is fixed on the conical tip, and the cooperation between the guiding column and the guiding long groove can limit the radial movement amount of the elastic block.
[0014] Preferably, two radial grooves are provided along the generatrix direction of the conical tip, and elastic blocks are provided in both of the two radial grooves;
[0015] The elastic block near the large head end of the conical tip is provided with a concave inclined surface and a sensor on the side close to the large head end of the conical tip; the elastic block near the small head end of the conical tip is provided with a concave inclined surface and a sensor on the side close to the small head end of the conical tip.
[0016] A processing machine tool includes the above-mentioned electronic expansion tip.
[0017] Preferably, it further includes a driving spindle, and the electronic expansion tip is installed at the end of the driving spindle.
[0018] The beneficial effects of this utility model are as follows:
[0019] 1. This utility model utilizes the cooperation between the elastic block on the side wall of the conical tip and the tapered hole at the end of the workpiece to be machined. The concave inclined surface on the elastic block abuts against the sensor to obtain the radial movement amount of the elastic block, thereby obtaining the clamping force between the conical tip and the workpiece to be machined, which is more conducive to reasonably controlling the clamping force on the workpiece to be machined and avoiding slipping and damage to the workpiece to be machined.
[0020] 2. This utility model can directly avoid the occurrence of slipping by providing a limiting groove on the tapered hole of the workpiece to be machined and cooperating with the limiting boss on the elastic block. Description of the Drawings
[0021] Figure 1 It is a schematic structural diagram of an electronic expansion tip;
[0022] Figure 2 It is a cross-sectional view of an electronic expansion tip;
[0023] Figure 3 It is a schematic diagram of the cooperation between an electronic expansion tip and the tapered hole of a workpiece to be machined.
[0024] In the figure: 1 - conical tip, 2 - elastic block, 3 - limiting boss, 4 - central channel, 5 - spring fixing block, 6 - compression spring, 7 - sensor, 8 - guiding column, 9 - guiding long groove, 10 - concave inclined surface, 11 - workpiece to be machined, 12 - limiting groove. Detailed implementation mode
[0025] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the accompanying drawings.
[0026] As Figures 1 to 3 shown, an electronic expansion center point includes a conical center point 1. A central channel 4 is provided in the center of the conical center point 1. A radial groove penetrates through the side wall of the conical center point 1. The radial groove is a long groove arranged along the generatrix direction of the conical center point 1. An elastic block 2 is arranged in the radial groove, and the elastic block 2 has a tendency to move away from the central channel 4 along the radial groove.
[0027] An inner concave inclined surface 10 is provided on one side of the elastic block 2 close to the large head end of the conical center point 1 or on one side close to the small head end of the conical center point 1. A sensor 7 is arranged in the central channel 4, and the sensor 7 can judge the radial movement amount of the elastic block 2 by contacting with the inner concave inclined surface 10.
[0028] The present utility model utilizes the cooperation between the elastic block 2 on the side wall of the conical center point 1 and the tapered hole at the end of the workpiece 11 to be processed. The inner concave inclined surface 10 on the elastic block 2 contacts with the sensor 7 to obtain the radial movement amount of the elastic block 2, so as to obtain the clamping force between the conical center point 1 and the workpiece 11 to be processed, which is more helpful for reasonably controlling the clamping force on the workpiece 11 to be processed and avoiding slipping and damaging the workpiece 11 to be processed.
[0029] A limiting boss 3 is preferably arranged on the radially outer surface of the elastic block 2. A tapered hole matching the conical center point 1 is provided at the end of the workpiece 11 to be processed. A limiting groove 12 is arranged along the generatrix direction of the tapered hole on the tapered hole. The width of the limiting groove 12 is the same as the width of the limiting boss 3. By arranging the limiting groove 12 on the tapered hole of the workpiece 11 to be processed to cooperate with the limiting boss 3 on the elastic block 2, the occurrence of slipping can be directly avoided. Of course, the elastic block 2 and the limiting groove 12 can also be directly used for cooperation, and the principle is the same.
[0030] A spring fixing block 5 is arranged in the central channel 4 of the present utility model. The spring fixing block 5 is fixed in the conical center point 1. A plurality of compression springs 6 are arranged between the spring fixing block 5 and the elastic block 2. Spring fixing holes are preferably arranged on both the spring fixing block 5 and the elastic block 2. Both ends of the compression spring 6 are respectively positioned in the spring fixing holes of the spring fixing block 5 and the elastic block 2. Specifically, the radial groove penetrates through the other side wall of the conical center point 1 in the reverse direction, and the spring fixing block 5 is fixed in the radial groove on the other side wall.
[0031] A through guiding long groove 9 is preferably arranged on the elastic block 2. A guiding column 8 is arranged in the guiding long groove 9. The guiding column 8 is fixed on the conical center point 1, and the cooperation between the guiding column 8 and the guiding long groove 9 can limit the radial movement amount of the elastic block 2.
[0032] In the present utility model, preferably two radial grooves are provided along the generatrix direction of the conical tip 1. Elastic blocks 2 are provided in both of the two radial grooves. The elastic block 2 near the large head end of the conical tip 1 is provided with a concave inclined surface 10 and a sensor 7 on the side near the large head end of the conical tip 1; the elastic block 2 near the small head end of the conical tip 1 is provided with a concave inclined surface 10 and a sensor 7 on the side near the small head end of the conical tip 1. Such a setting can make the two elastic blocks 2 adjacent as much as possible while not affecting the contact between the sensor 7 and the two elastic blocks 2 respectively.
[0033] The present utility model also provides a processing machine tool, which includes a driving spindle and the above-mentioned electronic expansion tip, and the electronic expansion tip is installed at the end of the driving spindle.
[0034] It should be understood that the use of these embodiments is only for illustrating the present utility model and is not intended to limit the protection scope of the present utility model. In addition, it should also be understood that after reading the technical content of the present utility model, those skilled in the art can make various changes, modifications and / or variations to the present utility model, and all these equivalent forms also fall within the protection scope defined by the appended claims of this application.
Claims
1. An electronic expansion tip, characterized in that: It comprises a conical top, wherein a central channel is provided at the center of the conical top, a radial groove is passed through the side wall of the conical top, an elastic block is provided in the radial groove, and the elastic block tends to be away from the central channel along the radial groove; The elastic block is provided with a concave inclined surface on one side close to the large end of the conical top or on one side close to the small end of the conical top. A sensor is provided in the central channel. The sensor can determine the radial movement of the elastic block by contacting the concave inclined surface.
2. The electronic expansion tip according to claim 1, characterized in that: A limiting boss is provided on the radial outer surface of the elastic block.
3. An electronic expansion tip according to claim 2, characterized in that: A tapered hole matching the tapered top is provided at the end of the workpiece to be processed, and a limiting groove is provided on the tapered hole along the generatrix direction of the tapered hole, and the width of the limiting groove is consistent with the width of the limiting boss.
4. The electronic expansion tip according to claim 1, characterized in that: A spring fixing block is arranged in the central channel, the spring fixing block is fixed in the conical top, and a plurality of compression springs are arranged between the spring fixing block and the elastic block.
5. The electronic expansion tip according to claim 4, characterized in that: The spring fixing block and the elastic block are both provided with spring fixing holes, and the two ends of the compression spring are respectively positioned in the spring fixing holes of the spring fixing block and the elastic block.
6. The electronic expansion tip according to claim 4, characterized in that: The radial groove passes through the side wall on the other side of the conical top in the opposite direction, and the spring fixing block is fixed in the radial groove on the side wall on the other side.
7. The electronic expansion tip according to claim 1, characterized in that: The elastic block is provided with a penetrating guide slot, in which a guide column is provided. The guide column is fixed on the conical top. The guide column and the guide slot cooperate to limit the radial movement of the elastic block.
8. The electronic expansion tip according to claim 1, characterized in that: Two radial grooves are provided along the generatrix direction of the cone top, and elastic blocks are provided in the two radial grooves; The elastic block near the large end of the conical top is provided with a concave slope and a sensor on the side close to the large end of the conical top; the elastic block near the small end of the conical top is provided with a concave slope and a sensor on the side close to the small end of the conical top.
9. A processing machine tool, characterized in that: Comprising the electronic expansion tip as described in any one of claims 1 to 8.
10. A processing machine tool according to claim 9, characterized in that: The invention also comprises a driving spindle, wherein the electronic expansion tip is installed at the end of the driving spindle.