Calibrating device for main shaft of numerical control machine tool

Abstract

The utility model provides a numerical control machine tool spindle calibration device, which belongs to the technical field of numerical control machine tools, and comprises a bottom plate, a placement driving assembly, a limit fixing assembly and an adjustment test assembly, one side of the bottom plate is fixedly connected with a vertical plate, the bottom plate is fixedly connected with a motor, the output end of the motor is fixedly connected with a driving belt pulley, and the output end of the driving belt pulley is fixedly connected with a vertical plate. A transmission belt is arranged on the driving belt wheel, a driven belt wheel is arranged at the end, away from the driving belt wheel, of the transmission belt, and a loop bar is fixedly connected to the driven belt wheel. According to the utility model, the four groups of support plates can be driven to synchronously expand or contract by rotating the long screw rod, rapid self-adaptive fixation of spindles with different diameters is realized, multi-point uniform support is carried out from the interior of the spindle, and radial run-out deviation of the spindle during rotation can be rapidly detected in cooperation with a symmetrical arc-shaped plate detection structure driven by the bidirectional threaded rod. And the calibration precision is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a CNC machine tool spindle calibration device. Background Technology

[0002] In the production of machine tool parts, fixtures are needed to fix them in place. To improve the machining accuracy of machine tool parts, a leveling device needs to be installed on the fixture to calibrate its horizontal position. Currently, the main method for leveling fixtures is to place a level on the fixture and then manually adjust the leveling screws at the bottom to achieve the desired level. However, the existing leveling method is relatively inefficient, and the level cannot be fixed to the fixture, making it easy for the level to fall and be damaged during adjustment.

[0003] To address the aforementioned issues, a search revealed an existing patent (application number: CN202322500107.X) for a horizontal calibration device used in machine tool parts production. The patent describes a device that "includes a fixed frame and a clamping plate. A placement plate is welded to the front outer wall of the clamping plate, and a level is fixed to the top of the placement plate via an elastic clamping mechanism. The fixed frame is equipped with a horizontal calibration mechanism, and the clamping plate is equipped with a machine tool parts clamping mechanism."

[0004] In actual operation, although machine tool parts of different sizes can be placed and fixed, and the level can be fixed to ensure stability during calibration, the machine tool spindle is generally cylindrical. When measuring the radial runout and axial runout of the spindle, the spindle needs to be rotated, which cannot be done by the above-mentioned equipment. Therefore, a CNC machine tool spindle calibration device is proposed. Utility Model Content

[0005] In view of this, the present invention provides a CNC machine tool spindle calibration device to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial option.

[0006] The technical solution of this utility model is implemented as follows: it includes a base plate, a drive assembly, a limiting and fixing assembly, and an adjustment and testing assembly. A vertical plate is fixedly connected to one side of the base plate, and a motor is fixedly connected to the base plate. A drive pulley is fixedly connected to the output end of the motor, and a transmission belt is provided on the drive pulley. A driven pulley is provided at the end of the transmission belt away from the drive pulley, and a sleeve rod is fixedly connected to the driven pulley. The adjustment and testing assembly includes a groove arranged on the base plate, and a bidirectional threaded rod is rotatably connected through the groove. Connecting plates are threaded to both ends of the bidirectional threaded rod. A square plate is fixedly connected to the top of the connecting plate, and a sliding rod is slidably connected through the square plate. An arc-shaped plate is fixedly connected to one end of the sliding rod. Two sets of arc-shaped plates are provided and symmetrically arranged on both sides of the sleeve rod. A spring is sleeved on the sliding rod.

[0007] More preferably, the limiting and fixing assembly includes a long screw rod rotatably connected inside the sleeve rod, a threaded sleeve threadedly connected to the long screw rod, a ring rotatably connected to the threaded sleeve, a first connecting rod hinged to the ring, a support plate hinged to the end of the first connecting rod away from the ring, and a second connecting rod hinged to the end of the support plate away from the first connecting rod.

[0008] More preferably, the base plate is provided with mounting holes, and the mounting holes are provided in four groups and are evenly distributed.

[0009] More preferably, the driving pulley and the driven pulley are rotatably connected to the vertical plate, the vertical plate is perpendicular to the bottom plate, and the sleeve rod and the vertical plate are respectively located on both sides of the driven pulley.

[0010] More preferably, the threaded sleeve is slidably connected inside the sleeve rod, the first connecting rod and the second connecting rod pass through the sleeve rod, the first connecting rod and the second connecting rod are respectively provided in four sets, the end of the second connecting rod away from the support plate is rotatably connected to the sleeve rod, the long screw passes through the ring, and the outer surface of the support plate is arc-shaped.

[0011] More preferably, the connecting plate is slidably connected to the groove, each set of square plates is provided with three sets of sliding rods, one end of the spring is fixedly connected to the arc plate, and the other end of the spring is fixedly connected to the square plate.

[0012] The present invention has the following advantages due to the adoption of the above technical solution:

[0013] I. This utility model can drive four sets of support plates to expand or contract synchronously by rotating a long screw, so as to achieve rapid adaptive fixation of spindles with different diameters. It provides multi-point uniform support from inside the spindle. Combined with the symmetrical arc plate detection structure driven by the bidirectional threaded rod, it can quickly detect the radial runout deviation when the spindle rotates, and significantly improve the calibration accuracy.

[0014] II. This utility model uses a motor-driven pulley to rotate the main shaft. With the help of a spring-buffered sliding rod and an arc-shaped plate detection module, the runout can be dynamically detected under the actual operating conditions of the main shaft. The test results are intuitive and reliable. The main shaft is fixed to the operating table with bolts through the mounting holes on the base plate, making installation simple and quick.

[0015] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a partial exploded view of the structure of this utility model;

[0019] Figure 3 for Figure 1 Enlarged view of point A in the image;

[0020] Figure 4 for Figure 2 Enlarged view of point B in the image.

[0021] Reference numerals: 1. Base plate; 101. Motor; 102. Drive pulley; 103. Transmission belt; 104. Driven pulley; 105. Sleeve rod; 106. Vertical plate; 201. Long screw rod; 202. Threaded sleeve; 203. Ring; 204. First connecting rod; 205. Support plate; 206. Second connecting rod; 301. Groove; 302. Bidirectional threaded rod; 303. Connecting plate; 304. Square plate; 305. Sliding rod; 306. Arc plate; 307. Spring; 4. Mounting hole. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0023] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0024] Example:

[0025] like Figure 1-4 As shown, this utility model embodiment provides a CNC machine tool spindle calibration device, including a base plate 1, a drive placement assembly, a limit fixing assembly, and an adjustment and testing assembly. A vertical plate 106 is fixedly connected to one side of the base plate 1. A motor 101 is fixedly connected to the base plate 1. A drive pulley 102 is fixedly connected to the output end of the motor 101. A transmission belt 103 is provided on the drive pulley 102. A driven pulley 104 is provided at the end of the transmission belt 103 away from the drive pulley 102. A sleeve rod 10 is fixedly connected to the driven pulley 104. 5. The adjustment test assembly includes a groove 301 arranged on the base plate 1. A bidirectional threaded rod 302 is rotatably connected through the groove 301. Both ends of the bidirectional threaded rod 302 are threadedly connected to connecting plates 303. A square plate 304 is fixedly connected to the top of the connecting plate 303. A sliding rod 305 is slidably connected through the square plate 304. An arc-shaped plate 306 is fixedly connected to one end of the sliding rod 305. Two sets of arc-shaped plates 306 are provided and symmetrically arranged on both sides of the sleeve rod 105. A spring 307 is sleeved on the sliding rod 305.

[0026] In a preferred embodiment, the limiting and fixing assembly includes a long screw 201 rotatably connected to the sleeve 105, a threaded sleeve 202 threadedly connected to the long screw 201, a ring 203 rotatably connected to the threaded sleeve 202, a first connecting rod 204 hinged to the ring 203, a support plate 205 hinged to the end of the first connecting rod 204 away from the ring 203, and a second connecting rod 206 hinged to the end of the support plate 205 away from the first connecting rod 204. The base plate 1 is provided with mounting holes 4, which are provided in four sets and evenly distributed. By rotating the long screw 201, the four sets of support plates 205 can be driven to expand or contract synchronously, realizing rapid adaptive fixing of spindles of different diameters and providing multi-point uniform support from inside the spindle.

[0027] In a preferred embodiment, the driving pulley 102 and the driven pulley 104 are rotatably connected to the vertical plate 106, which is perpendicular to the base plate 1. The sleeve rod 105 and the vertical plate 106 are located on opposite sides of the driven pulley 104. The threaded sleeve 202 is slidably connected inside the sleeve rod 105. The first connecting rod 204 and the second connecting rod 206 pass through the sleeve rod 105. The first connecting rod 204 and the second connecting rod 206 are provided in four sets. The end of the second connecting rod 206 away from the support plate 205 is rotatably connected to the sleeve rod 105. The long screw 201 passes through the ring 203. The support plate 205... The outer surface is arc-shaped, and the connecting plate 303 is slidably connected in the groove 301. Each set of square plates 304 is provided with three sets of sliding rods 305. One end of the spring 307 is fixedly connected to the arc-shaped plate 306, and the other end of the spring 307 is fixedly connected to the square plate 304. The motor 101 drives the pulley to rotate the spindle. With the sliding rod 305 buffered by the spring 307 and the detection module of the arc plate 306, the runout can be dynamically detected under the actual operation of the spindle. The test results are intuitive and reliable. It is fixed to the operating table with bolts through the mounting holes 4 on the base plate 1, and the installation is simple and quick.

[0028] In operation, the worker uses bolts to fix the device to the operating table through the four sets of mounting holes 4 on the base plate 1. When calibrating the spindle, the spindle sleeve is placed on the sleeve rod 105, and then the long screw 201 is manually rotated, which drives the threaded sleeve 202 to push the ring 203 towards the vertical plate 106. At this time, the ring 203 will push the first connecting rod 204 to rotate, and the second connecting rod 206 will rotate on the sleeve rod 105, thereby simultaneously pushing the four sets of support plates 205 to move outward, supporting and fixing the spindle from the inside. Then, the double-threaded rod 302 is manually rotated, which drives the two sets of connecting plates 303 to slide towards the center in the groove 301 until the two sets of arc plates 306... The plates are almost flush with the sides of the main shaft, but a certain gap is required between the arc plate 306 and the main shaft. At this time, the motor 101 is started. The motor 101 drives the drive pulley 102 to rotate on the vertical plate 106, and drives the driven pulley 104 to rotate on the vertical plate 106 through the transmission belt 103. This causes the sleeve rod 105 to drive the main shaft fixed on the sleeve rod 105 to rotate. By observing whether the main shaft pushes the arc plates 306 on both sides to move through the rotation of the main shaft, if the arc plates 306 remain stationary, the calibration is qualified. If, while the main shaft is rotating, it pushes the arc plates 306 on both sides to slide the sliding rod 305 and compress the spring 307, the calibration is unqualified and needs to be replaced.

[0029] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A CNC machine tool spindle calibration device, characterized in that: The system includes a base plate (1), a drive assembly, a limiting and fixing assembly, and an adjustment and testing assembly. A vertical plate (106) is fixedly connected to one side of the base plate (1). A motor (101) is fixedly connected to the base plate (1). A drive pulley (102) is fixedly connected to the output end of the motor (101). A transmission belt (103) is provided on the drive pulley (102). A driven pulley (104) is provided at the end of the transmission belt (103) away from the drive pulley (102). A sleeve rod (105) is fixedly connected to the driven pulley (104). The adjustment and testing assembly includes components arranged on the base plate. (1) A groove (301) is provided on the sleeve rod (105), and a bidirectional threaded rod (302) is rotatably connected through the groove (301). Both ends of the bidirectional threaded rod (302) are respectively threaded to a connecting plate (303). A square plate (304) is fixedly connected to the top of the connecting plate (303). A sliding rod (305) is slidably connected through the square plate (304). An arc plate (306) is fixedly connected to one end of the sliding rod (305). Two sets of arc plates (306) are provided and are symmetrically arranged on both sides of the sleeve rod (105). A spring (307) is sleeved on the sliding rod (305).

2. The CNC machine tool spindle calibration device according to claim 1, characterized in that: The limiting and fixing assembly includes a long screw (201) rotatably connected to the sleeve (105), a threaded sleeve (202) threadedly connected to the long screw (201), a ring (203) rotatably connected to the threaded sleeve (202), a first connecting rod (204) hinged to the ring (203), a support plate (205) hinged to the end of the first connecting rod (204) away from the ring (203), and a second connecting rod (206) hinged to the end of the support plate (205) away from the first connecting rod (204).

3. The CNC machine tool spindle calibration device according to claim 2, characterized in that: The base plate (1) is provided with mounting holes (4), and the mounting holes (4) are provided in four sets and are evenly distributed.

4. The CNC machine tool spindle calibration device according to claim 3, characterized in that: The driving pulley (102) and the driven pulley (104) are rotatably connected to the vertical plate (106), the vertical plate (106) is perpendicular to the bottom plate (1), and the sleeve rod (105) and the vertical plate (106) are located on both sides of the driven pulley (104).

5. The CNC machine tool spindle calibration device according to claim 4, characterized in that: The threaded sleeve (202) is slidably connected inside the sleeve rod (105). The first connecting rod (204) and the second connecting rod (206) pass through the sleeve rod (105). The first connecting rod (204) and the second connecting rod (206) are provided in four sets respectively. The end of the second connecting rod (206) away from the support plate (205) is rotatably connected to the sleeve rod (105). The long screw (201) passes through the ring (203). The outer surface of the support plate (205) is arc-shaped.

6. The CNC machine tool spindle calibration device according to claim 5, characterized in that: The connecting plate (303) is slidably connected in the groove (301). Each set of square plates (304) is provided with three sets of sliding rods (305). One end of the spring (307) is fixedly connected to the arc plate (306), and the other end of the spring (307) is fixedly connected to the square plate (304).

Images