Numerical control machine tool spindle load detection device

Abstract

The utility model discloses a numerical control machine tool main shaft load detection device, which comprises a main shaft seat and a main shaft, the main shaft is rotatably connected with the main shaft seat through a main shaft bearing, the main shaft seat is rotatably connected with an elastic body through a bearing, the side surface of the main shaft seat is provided with a fixing groove, and the elastic body is installed inside the fixing groove. Stress pieces are installed on the two sides of the elastic body, and the back faces of the stress pieces are attached to the inner wall of the fixing groove. According to the utility model, the elastic body is installed on the main shaft through the bearing, when the main shaft is loaded, the main shaft rotates to present inclination with a certain amplitude, the main shaft drives the elastic body to deform through the bearing, and the deformation degree of the elastic body is detected through the stress sheet. The inclination angle of the main shaft can be amplified through the elastic body, so that the detection precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled machine tools, in particular to a spindle load detection device for numerically controlled machine tools. 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] [Chinese Invention] CN202411002804.5 Monitoring and protection method for self-learning and self-retraction of machine tool drilling tools. The bearing load detection unit is directly installed on the spindle, resulting in low detection accuracy.

[0004] Therefore, how to provide a CNC machine tool spindle load 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 spindle load detection device for a CNC machine tool to solve the problem that the existing bearing load detection unit is directly installed on the spindle, resulting in low detection accuracy.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A spindle load detection device for a CNC machine tool includes a spindle seat and a spindle. The spindle is rotatably connected to the spindle seat through a spindle bearing. The spindle seat is rotatably connected to an elastomer through a bearing. A fixing groove is installed on the side of the spindle seat. The elastomer is installed inside the fixing groove. Stress plates are installed on both sides of the elastomer. The back of the stress plate is in contact with the inner wall of the fixing groove.

[0008] Preferably, a tool mounting seat and a pulley are respectively installed at both ends of the main shaft.

[0009] Preferably, the outer diameter of the elastic body is smaller than the inner diameter of the fixing groove.

[0010] Preferably, the stress plate is in the shape of a ring.

[0011] Preferably, a protrusion is provided inside the fixing groove, and a groove is provided on the outer edge of the elastic body, and the groove is engaged with the protrusion.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model installs an elastomer on the main shaft through a bearing. When the main shaft is loaded, the main shaft will show a certain degree of inclination when rotating. The main shaft drives the elastomer to deform through the bearing, and the deformation degree of the elastomer is detected by a stress sheet. Compared with the existing sensor directly installed on the main shaft, the utility model can amplify the inclination angle of the main shaft through the elastomer, thereby improving the detection accuracy.

[0014] 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.

[0015] 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

[0016] 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.

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is an end cross-sectional view of the present invention.

[0019] In the figure: 1. Spindle seat; 2. Spindle bearing; 3. Spindle; 4. Tool mounting seat; 5. Pulley; 6. Bearing; 7. Stress plate; 8. Fixing groove; 9. Elastomer. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] See also Figure 1-2 The present invention provides a technical solution for a spindle load detection device for a CNC machine tool: it includes a spindle seat 1 and a spindle 3, the spindle 3 is rotatably connected to the spindle seat 1 through a spindle bearing 2, the spindle seat 1 is rotatably connected to an elastic body 9 through a bearing 6, a fixing groove 8 is installed on the side of the spindle seat 1, the elastic body 9 is installed inside the fixing groove 8, and stress sheets 7 are installed on both sides of the elastic body 9, and the back of the stress sheet 7 is in contact with the inner wall of the fixing groove 8.

[0025] A tool mounting seat 4 and a pulley 5 are respectively mounted on both ends of the main shaft 3 .

[0026] The outer diameter of the elastomer 9 is smaller than the inner diameter of the fixing groove 8. The stress sheet 7 is annular in shape. A protrusion is provided inside the fixing groove 8. The outer edge of the elastomer 9 is provided with a groove. The groove and the protrusion are engaged with each other, thereby preventing the main shaft 1 from driving the elastomer 9 to rotate, and limiting the elastomer 9 through the fixing groove 8.

[0027] During specific use, the utility model installs an elastomer on the main shaft through a bearing. When the main shaft is loaded, the main shaft will show a certain degree of inclination when rotating. The main shaft drives the elastomer to deform through the bearing, and the degree of deformation of the elastomer is detected by a stress sheet. Compared with the existing sensor directly installed on the main shaft, the utility model can amplify the main shaft inclination angle through the elastomer, thereby improving the detection accuracy.

[0028] 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 load detection device, characterized in that: The invention comprises a spindle seat (1) and a spindle (3), wherein the spindle (3) is rotatably connected to the spindle seat (1) via a spindle bearing (2), and the spindle seat (1) is rotatably connected to an elastic body (9) via a bearing (6). A fixing groove (8) is installed on the side of the spindle seat (1), and the elastic body (9) is installed inside the fixing groove (8). Stress sheets (7) are installed on both sides of the elastic body (9), and the back surface of the stress sheet (7) is in contact with the inner wall of the fixing groove (8).

2. The spindle load detection device for a CNC machine tool according to claim 1, wherein: A tool mounting seat (4) and a pulley (5) are respectively installed at both ends of the main shaft (3).

3. The spindle load detection device for a CNC machine tool according to claim 2, wherein: The outer diameter of the elastic body (9) is smaller than the inner diameter of the fixing groove (8).

4. The spindle load detection device for a CNC machine tool according to claim 3, wherein: The stress piece (7) is in the shape of a ring.

5. The spindle load detection device for a CNC machine tool according to claim 3, wherein: A protrusion is provided inside the fixing groove (8), and a groove is provided on the outer edge of the elastic body (9), and the groove is engaged with the protrusion.

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