CN212665596U - Rotation precision detection device of precision machine tool spindle - Google Patents
Rotation precision detection device of precision machine tool spindle Download PDFInfo
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- CN212665596U CN212665596U CN202021333269.9U CN202021333269U CN212665596U CN 212665596 U CN212665596 U CN 212665596U CN 202021333269 U CN202021333269 U CN 202021333269U CN 212665596 U CN212665596 U CN 212665596U
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Abstract
The utility model discloses a gyration precision measurement of precision machine tool main shaft device, including main shaft and LMS data acquisition appearance, the fixed switching dish that has cup jointed of one end lateral wall that the main shaft is located the conical surface, one side that the main shaft was kept away from to the switching dish is connected with the steel ball through the ball seat, one side of ball seat is provided with the sensor support, install the sensor on the sensor support, LMS data acquisition appearance and sensor electric connection. The utility model discloses in, this gyration precision detection device has solved the problem that traditional contact detection device can't be at radial runout and gyration precision detection under the high-speed operating mode of main shaft, provides structural design data for improving main shaft dynamic precision, and what the measuring method of high-speed main shaft gyration precision adopted is based on the dual measuring head measuring method of reversal method, and the data of positive and negative can more guarantee to extract the accuracy of data, more can reflect the radial runout and the gyration precision of main shaft under the high-speed operating mode.
Description
Technical Field
The utility model relates to a mechanical engineering technical field, more specifically say, in particular to gyration precision measurement of precision machine tool main shaft device.
Background
With the development of machine tools towards high speed and high precision, the development of precision machine tool spindles, which are one of the key parts of machine tools, is relatively rapid. The rotation precision of the main shaft of the precision machine tool is one of important factors influencing the processing precision of the high-speed precision machine tool. In the manufacturing and application process of the precision machine tool spindle, the measurement of the rotation precision is an indispensable link, and is a necessary condition for ensuring the rotation precision of a precision machine tool spindle system.
At present, national standards (inspection methods of geometric accuracy and working accuracy of a machine tool under no load or finish machining conditions) of machine tool inspection rules are established in China, wherein the inspection methods of the rotation accuracy of a main shaft of the machine tool mainly comprise the following steps:
the measurement of the precision of the machine tool spindle adopts a static measurement evaluation method, which is a method for measuring the rotation precision of the spindle under the low-speed rotation environment and is also called a direct measurement method. The method comprises the steps of inserting a precise core rod into a taper hole of a main shaft of a machine tool, rotating the main shaft at a low speed and a constant speed under the condition of no load, placing dial indicators on the surface and the end face of the core rod for measurement, measuring the maximum reading and the minimum reading, and calculating the difference between the maximum reading and the minimum reading, namely the rotation precision of the main shaft, namely the radial runout, the axial runout and the end face runout of the main shaft.
Although the method is simple, the method can introduce the eccentric error of the taper hole and the misalignment error of the mandrel and the spindle axis, and can not reflect the rotation precision of the spindle in the working state and can not be used for high-speed and high-precision rotation precision measurement. Therefore, the measurement of the rotation accuracy of the spindle of the precision machine tool becomes a problem to be solved.
Therefore, we propose a rotation precision detection device of a precision machine tool spindle to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem existing in the prior art and providing a rotation precision detection device of a precision machine tool main shaft.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a gyration precision measurement of precision machine tool main shaft, includes main shaft and LMS data acquisition appearance, the fixed switching dish that has cup jointed of one end lateral wall that the main shaft is located the conical surface, the one side that the main shaft was kept away from to the switching dish is connected with the steel ball through the ball seat, one side of ball seat is provided with the sensor support, install the sensor on the sensor support, LMS data acquisition appearance and sensor electric connection.
Preferably, the adapter plate is sleeved on the outer side wall of the main shaft, a compression nut is sleeved on one end of the main shaft close to the adapter plate in a threaded manner, and the compression nut is used for fixing the adapter plate on the outer side wall of the main shaft.
Preferably, the ball seat is fixed on the outer side wall of the adapter plate through a connecting bolt.
Preferably, the sensors are non-contact eddy current sensors, and the distance between the two sensors and the steel ball is the same.
Preferably, two of the sensors are symmetrically arranged.
The embodiment of the utility model provides a technical scheme can include following beneficial effect:
the utility model discloses in, this gyration precision detection device has solved the problem that traditional contact detection device can't be at radial runout and gyration precision detection under the high-speed operating mode of main shaft, provides structural design data for improving main shaft dynamic precision, and what the measuring method of high-speed main shaft gyration precision adopted is based on the dual measuring head measuring method of reversal method, and the data of positive and negative can more guarantee to extract the accuracy of data, more can reflect the radial runout and the gyration precision of main shaft under the high-speed operating mode.
Drawings
Fig. 1 is a schematic cross-sectional structural view of a rotation precision detecting device for a spindle of a precision machine tool according to the present invention;
fig. 2 is a schematic structural view of a transfer plate in the rotation precision detecting device of the precision machine tool spindle according to the present invention;
fig. 3 is the schematic structural diagram of the ball seat in the rotation precision detecting device of the precision machine tool spindle according to the present invention.
In the figure: 1. a main shaft; 2. a switching disk; 3. a ball seat; 4. a connecting bolt; 5. a compression nut; 6. a sensor holder; 7. a sensor; 8. and (5) steel balls.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a rotation precision detection device of a precision machine tool spindle comprises a spindle 1 and an LMS data acquisition instrument, wherein an outer side wall of one end, located on a conical surface, of the spindle 1 is fixedly sleeved with a switching disc 2, one side, far away from the spindle 1, of the switching disc 2 is connected with a steel ball 8 through a ball seat 3, one side of the ball seat 3 is provided with a sensor support 6, a sensor 7 is mounted on the sensor support 6, and the LMS data acquisition instrument is electrically connected with the sensor 7.
The ball seat 3 is used for fixing the steel ball 8 conveniently, and the steel ball 8 is bonded on the ball seat 3. Wherein, when installing, it needs to guarantee that there is not installation error between adapter 2 and ball seat 3.
The LMS data acquisition instrument, not shown in the figure, is used for analyzing the data acquired by the sensor 7. The LMS data acquisition instrument is adopted for data acquisition, and online rotation precision measurement can be carried out, so that the spindle 1 can obtain higher detection precision under a high-speed working condition.
The selection of the number of sampling points requires that the sampling frequency f is more than or equal to 2fs and the signal frequency to be identified according to the Nyquist sampling theorem.
The sensor support 6 is a sleeve type support, and the sensor support 6 is sleeved on the outer side wall of the steel ball 8, so that the calibration of the sensor 7 is facilitated.
The roundness error of the steel ball 8 must meet the requirement of detection precision grade.
Further, the outer side wall of the main shaft 1 is sleeved with the switching disc 2, a compression nut 5 is sleeved on one end of the main shaft 1 close to the switching disc 2 in a threaded mode, and the compression nut 5 is used for fixing the switching disc 2 on the outer side wall of the main shaft 1.
Further, the ball seat 3 is fixed on the outer side wall of the adapter plate 2 through a connecting bolt 4.
Further, the two sensors 7 are symmetrically arranged, and the distances between the two sensors 7 and the steel ball 8 are the same.
Further, the sensor 7 is a non-contact eddy current sensor.
In the utility model, when the main shaft 1 rotates, the sensor 7 collects signals, the collected signals comprise the rotation error of the main shaft 1 and the roundness error of the steel ball 8, and the sensor 7 returns to the initial position after collecting n times of data; at this time, the spindle 1 is reversed, the sensor 7 starts to collect signals, and returns to the initial position after n-turn data are collected. And at the moment, the LMS data acquisition instrument stores the acquired signals in the LMS.test.lab, so that error separation can be carried out, and the radial run-out error and the rotation precision of the spindle 1 can be obtained.
The utility model adopts the non-contact eddy current sensor to complete the non-contact displacement signal acquisition; the non-contact eddy current sensor and the test point are in a non-contact state, the response requirement of the speed characteristic of the detected target is met, and the additional influence caused by contact friction in a motion state is avoided, so that the measured data is real and accurate, and the detection task which can hardly be finished by the traditional instrument measurement technology is solved.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides a gyration precision measurement of precision machine tool main shaft device, its characterized in that, includes main shaft (1) and LMS data acquisition appearance, main shaft (1) is located the fixed cover of one end lateral wall of conical surface and has connect switching dish (2), one side that main shaft (1) was kept away from in switching dish (2) is connected with steel ball (8) through ball seat (3), one side of ball seat (3) is provided with sensor support (6), install sensor (7) on sensor support (6), LMS data acquisition appearance and sensor (7) electric connection.
2. The rotation precision detection device of the main shaft of the precision machine tool according to claim 1, characterized in that the adapter plate (2) is sleeved on the outer side wall of the main shaft (1), a compression nut (5) is sleeved on one end of the main shaft (1) close to the adapter plate (2) in a threaded manner, and the compression nut (5) is used for fixing the adapter plate (2) on the outer side wall of the main shaft (1).
3. The rotation accuracy detection device of the precision machine tool spindle according to claim 1, characterized in that the ball seat (3) is fixed on the outer side wall of the adapter plate (2) through a connecting bolt (4).
4. The apparatus for detecting the revolving accuracy of a spindle of a precision machine tool according to claim 1, wherein the sensors (7) are non-contact eddy current sensors, and the distances between the two sensors (7) and the steel ball (8) are the same.
5. The apparatus for detecting the rotational accuracy of a spindle of a precision machine tool according to claim 1, wherein the two sensors (7) are symmetrically disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021333269.9U CN212665596U (en) | 2020-07-08 | 2020-07-08 | Rotation precision detection device of precision machine tool spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021333269.9U CN212665596U (en) | 2020-07-08 | 2020-07-08 | Rotation precision detection device of precision machine tool spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212665596U true CN212665596U (en) | 2021-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021333269.9U Expired - Fee Related CN212665596U (en) | 2020-07-08 | 2020-07-08 | Rotation precision detection device of precision machine tool spindle |
Country Status (1)
| Country | Link |
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| CN (1) | CN212665596U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250976A (en) * | 2021-05-24 | 2021-08-13 | 合肥工业大学 | Device and method for detecting and controlling radial runout of main shaft of canned motor pump and canned motor pump |
-
2020
- 2020-07-08 CN CN202021333269.9U patent/CN212665596U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250976A (en) * | 2021-05-24 | 2021-08-13 | 合肥工业大学 | Device and method for detecting and controlling radial runout of main shaft of canned motor pump and canned motor pump |
| CN113250976B (en) * | 2021-05-24 | 2022-08-30 | 合肥工业大学 | Device and method for detecting and controlling radial runout of main shaft of canned motor pump and canned motor pump |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210309 Termination date: 20210708 |
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| CF01 | Termination of patent right due to non-payment of annual fee |