Vibration detection device for spindle of numerical control machine tool
By installing axial and radial displacement sensors on the spindle of CNC machine tools, the problem that traditional detection devices have difficulty distinguishing between axial and radial vibrations is solved, and more accurate vibration detection and maintenance are achieved.
Patent Information
- Application Number
- CN202422394737.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Traditional spindle vibration detection devices directly install vibration sensors on the spindle or spindle box, resulting in inaccurate detection results and difficulty in distinguishing between axial and radial vibrations.
Axial displacement sensors and radial displacement sensors are used to detect the axial and radial vibrations of the spindle respectively, and accurate vibration detection is achieved through the rolling connection of the measuring wheel and the guide wheel.
It can accurately distinguish between the axial and radial vibrations of the spindle, provide more precise vibration detection results, and support targeted maintenance.
Smart Images
Figure CN223313625U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of numerical control machine tools, in particular to a vibration detection device for a main shaft of a numerical control machine tool. Background Art
[0002] In the field of CNC machine tools, the most important component of the machine tool is the spindle unit. Therefore, it is extremely important to effectively detect the operating status of the spindle.
[0003] Traditional spindle vibration detection devices directly install vibration sensors on the spindle or spindle box to detect vibration during spindle operation. This detection method is not very accurate and it is difficult to determine whether the spindle is vibrating axially or radially.
[0004] Therefore, how to provide a CNC machine tool spindle vibration detection device to solve the problems existing in the prior art is of great significance to its application. Utility Model Content
[0005] In view of this, the purpose of this application is to provide a CNC machine tool spindle vibration detection device to solve the problem that the traditional spindle vibration detection device directly installs the vibration sensor on the spindle or spindle box to perform vibration detection when the spindle is running. The detection results of this detection method are not very accurate, and it is difficult to determine whether the spindle has axial vibration or radial vibration problem.
[0006] To achieve the above objectives, the present invention provides the following technical solutions:
[0007] A CNC machine tool spindle vibration detection device comprises a spindle seat and a spindle, wherein the spindle is rotatably connected to the spindle seat via a bearing;
[0008] The main shaft is fixedly connected to a measuring wheel, a vertical fixing bracket is installed on one side of the top end of the shaft seat, an axial displacement sensor is installed on the vertical fixing bracket, an axial connecting block is installed on the detection end of the axial displacement sensor, an axial measuring guide wheel is installed on the end of the axial connecting block, and the axial measuring guide wheel is rollingly connected to one side of the measuring wheel;
[0009] A transverse fixing frame is installed at the top of the vertical fixing frame, a radial displacement sensor is installed at the end of the transverse fixing frame, a radial connecting block is installed at the detection end of the radial displacement sensor, and a radial measuring guide wheel is installed at the bottom end of the radial connecting block. The radial measuring guide wheel is rollingly connected to the outer ring of the measuring wheel.
[0010] Preferably, the axial connection block and the vertical fixing frame are elastically connected via an axial spring, and the radial connection block and the transverse fixing frame are elastically connected via a radial spring.
[0011] Preferably, a tool chuck and a transmission pulley are respectively installed at both ends of the main shaft, and the vertical fixing frame and the shaft seat are detachably connected by fixing screws.
[0012] Preferably, the measuring wheel and the main shaft are detachably connected, a flange matched with the measuring wheel is provided in the middle of the main shaft, and the flange and the measuring wheel are fixedly connected by bolts.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] The utility model is capable of distinguishing the axial vibration and radial vibration of the main shaft by arranging the axial displacement sensor and the radial displacement sensor, so as to better carry out targeted maintenance on the main shaft.
[0015] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiment of the present application in conjunction with the accompanying drawings.
[0016] Based on the detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without inventive work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.
[0018] Figure 1 It is a structural diagram of the utility model;
[0019] Figure 2 for Figure 1 Enlarged view of point A.
[0020] In the figure: 1. Shaft seat; 2. Bearing; 3. Spindle; 4. Tool chuck; 5. Drive pulley; 6. Measuring wheel; 7. Axial measuring guide wheel; 8. Axial connecting block; 9. Axial spring; 10. Axial displacement sensor; 11. Vertical fixing bracket; 12. Radial measuring guide wheel; 13. Radial displacement sensor; 14. Horizontal fixing bracket; 15. Radial connecting block; 16. Radial spring. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. In the following description, specific details such as specific configurations and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures has been omitted in the embodiments.
[0022] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.
[0023] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and subsequent associated objects are in an "or" relationship.
[0024] It should also be noted that, in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprises," or any other variations thereof are intended to cover non-exclusive inclusion.
[0025] See also Figure 1-2 , the present invention provides a technical solution for a spindle vibration detection device for a CNC machine tool: comprising a shaft seat 1 and a spindle 3, the spindle 3 being rotatably connected to the shaft seat 1 through a bearing 2;
[0026] The main shaft 3 is fixedly connected to the measuring wheel 6. A vertical fixing frame 11 is installed on one side of the top of the shaft seat 1. The vertical fixing frame 11 is installed with an axial displacement sensor 10. The detection end of the axial displacement sensor 10 is installed with an axial connecting block 8. The end of the axial connecting block 8 is installed with an axial measuring guide wheel 7. The axial measuring guide wheel 7 is rollingly connected to one side of the measuring wheel 6.
[0027] A transverse fixing frame 14 is installed at the top of the vertical fixing frame 11, a radial displacement sensor 13 is installed at the end of the transverse fixing frame 14, a radial connecting block 15 is installed at the detection end of the radial displacement sensor 13, and a radial measuring guide wheel 12 is installed at the bottom end of the radial connecting block 15. The radial measuring guide wheel 12 is rollingly connected to the outer ring of the measuring wheel 6.
[0028] The axial connection block 8 and the vertical fixing frame 11 are elastically connected via an axial spring 9 , and the radial connection block 15 and the transverse fixing frame 14 are elastically connected via a radial spring 16 .
[0029] A tool chuck 4 and a drive pulley 5 are respectively mounted on both ends of the spindle 3 , and a vertical fixing frame 11 is detachably connected to the shaft seat 1 via fixing screws.
[0030] The measuring wheel 6 and the main shaft 3 are detachably connected. A flange that matches the measuring wheel 6 is provided in the middle of the main shaft 3. The flange and the measuring wheel 6 are fixedly connected by bolts.
[0031] During specific use, the measuring wheel 6 is first installed on the flange in the middle of the main shaft 3 by bolts, and then the vertical fixing frame 11 is installed on the shaft seat 1. At the same time, the radial measuring guide wheel 12 is rollingly connected to the outer ring of the measuring wheel 6, and the axial measuring guide wheel 7 is rollingly connected to one side of the measuring wheel 6. At this time, the main shaft 3 rotates, and the main shaft 3 drives the measuring wheel 6 to rotate. When the main shaft 3 vibrates axially, the axial measuring wheel 7 moves axially, so that the axial vibration amplitude and frequency are detected by the axial displacement sensor 10. When the main shaft 3 vibrates radially, the radial measuring guide wheel 12 moves radially, so that the radial vibration amplitude and frequency are detected by the radial displacement sensor 13.
[0032] The above description is merely a preferred embodiment of the present invention and does not limit the scope of protection of the present invention. Those skilled in the art will appreciate that the present invention is susceptible to various modifications and variations. Any variation, modification, replacement, integration, or parameter change to these embodiments, which falls within the spirit and principles of the present invention and achieves the same functionality through conventional substitutions, without departing from the principles and spirit of the present invention, falls within the scope of protection of the present invention.
Claims
1. A CNC machine tool spindle vibration detection device, characterized in that: It comprises a shaft seat (1) and a main shaft (3), wherein the main shaft (3) is rotatably connected to the shaft seat (1) via a bearing (2); The main shaft (3) is fixedly connected to a measuring wheel (6); a vertical fixing frame (11) is installed on one side of the top end of the shaft seat (1); an axial displacement sensor (10) is installed on the vertical fixing frame (11); an axial connecting block (8) is installed at the detection end of the axial displacement sensor (10); an axial measuring guide wheel (7) is installed at the end of the axial connecting block (8); and the axial measuring guide wheel (7) is rollingly connected to one side of the measuring wheel (6); A transverse fixing frame (14) is installed at the top end of the vertical fixing frame (11), a radial displacement sensor (13) is installed at the end end of the transverse fixing frame (14), a radial connecting block (15) is installed at the detection end of the radial displacement sensor (13), a radial measuring guide wheel (12) is installed at the bottom end of the radial connecting block (15), and the radial measuring guide wheel (12) is rollingly connected to the outer ring of the measuring wheel (6).
2. The CNC machine tool spindle vibration detection device according to claim 1, wherein: The axial connection block (8) and the vertical fixing frame (11) are elastically connected via an axial spring (9), and the radial connection block (15) and the transverse fixing frame (14) are elastically connected via a radial spring (16).
3. The CNC machine tool spindle vibration detection device according to claim 2, wherein: A tool chuck (4) and a drive pulley (5) are respectively installed at both ends of the main shaft (3), and the vertical fixing frame (11) and the shaft seat (1) are detachably connected via fixing screws.
4. The CNC machine tool spindle vibration detection device according to claim 3, wherein: The measuring wheel (6) and the main shaft (3) are detachably connected. A flange plate adapted to the measuring wheel (6) is provided in the middle of the main shaft (3). The flange plate and the measuring wheel (6) are fixedly connected by bolts.