Three-dimensional probe gear measurement center synchronous rotation error monitoring system and monitoring method

Abstract

A three-dimensional probe gear measurement top synchronous rotation error monitoring system. The top of the original product does not have an encoder synchronous rotation accuracy monitoring system. When the three-dimensional probe is measuring, calibrating and testing, the three-dimensional probe measurement top rotation is not synchronized due to the loosening of the driver, the sliding of the top and other phenomena, which affects the accuracy of the measurement. The composition of the present invention includes: a sleeve (2), an upper top (1) is installed on the left side of the sleeve, a retaining frame (3) is installed between the upper top and the sleeve, the tail of the upper top is connected to the inner rod by bolts, a bearing (5) is installed on the left side of the inner rod and the end face of the spring sleeve (6), a spring (7) is installed between the inner rod and the spring sleeve, the right end of the inner rod has a groove, a permanent magnet (9) is installed in the groove, the right end of the sleeve is connected to the end cover by a thread, a magnetic induction chip (8) is installed on the outside of the end cover, and a photoelectric Hall switch (10) is installed in the hole below the sleeve. The present invention is used for a three-dimensional probe gear measurement top synchronous rotation error monitoring system.

Description

Technical Field

[0001] The invention relates to the technical field of measuring tools and cutting tools, and in particular to a system and method for monitoring the synchronous rotation error of a three-dimensional probe gear measuring top. Background Art

[0002] The upper center parts of the original similar products do not have an encoder synchronous rotation accuracy monitoring system. The result of this measurement is: when the three-dimensional probe gear measurement center is calibrated and tested, the upper and lower centers of the three-dimensional probe gear measurement center are not rotated synchronously due to loose drivers, center sliding and other phenomena, resulting in rotation synchronization errors, which seriously affect the accuracy of the measurement. The synchronous rotation error of the upper and lower centers of the three-dimensional probe gear measurement center will directly lead to instrument detection errors or the accuracy of the measurement results, affecting the accuracy of the instrument; after the monitoring function is added to this application, the synchronous rotation accuracy of the upper and lower centers is monitored and displayed in real time, and after judgment by the measurement software system, an error alarm is provided to the operator; the display and diagnosis of the synchronous rotation error of the upper and lower centers can help the operator quickly judge the measurement alarm caused by the synchronization error and improve the efficiency of the instrument operation. Summary of the invention

[0003] The purpose of the present invention is to provide a three-dimensional probe gear measurement center synchronous rotation error monitoring system and monitoring method. The structure can monitor and display the synchronous rotation accuracy of the upper and lower centers in real time, and can effectively avoid the situation in which the upper and lower centers are not synchronized during the debugging and testing of the three-dimensional probe gear measurement center, which affects the accuracy of the data during the instrument debugging and testing process.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A three-dimensional probe gear measurement center synchronous rotation error monitoring system comprises: a sleeve, an upper center is installed on the left side of the sleeve, a retaining frame is installed between the upper center and the sleeve, the tail of the upper center is connected to the inner rod through a bolt, bearings are installed on the left side of the inner rod and the end face of the spring sleeve, a spring is installed between the inner rod and the spring sleeve, the right end of the inner rod has a groove, a permanent magnet is installed in the groove, the right end of the sleeve is connected to the end cover through a thread, a magnetic induction chip is installed on the outside of the end cover, and a photoelectric Hall switch is installed in the hole below the sleeve.

[0006] The three-dimensional probe gear measurement top synchronous rotation error monitoring system, the positioning pin is installed in the middle position above the sleeve, the end cover is installed in the sleeve outside, the retaining frame is made of polytetrafluoroethylene, the permanent magnet size is Φ8×3, and the magnetic induction chip adopts the magnetic induction chip AS5041.

[0007] A three-dimensional probe gear measurement top synchronous rotation error monitoring system and monitoring method, the method includes the following contents:

[0008] First, before the instrument detection work begins, align the positioning hole of the lower end of the workpiece to be measured and place it on the lower center equipped with the spindle encoder. The electronic control system of the three-dimensional gear measurement center controls the center column servo motor to drive the center support arm to move downward to shorten the distance between the upper and lower centers, so that the upper center in the upper and lower center synchronous rotation error diagnosis system of the three-dimensional probe gear measurement center is aligned with the positioning hole of the workpiece to be measured. During the downward movement of the upper center, the spring is compressed under the action of pressure until the upper end position of the upper center triggers the photoelectric Hall switch to stop the movement of the center support arm. At this time, the workpiece to be measured is pressed under the reaction force of the spring, and the gap between the radially magnetized Φ8×3 permanent magnet and the magnetic induction chip AS5041 reaches between 1mm-1.5mm, reaching the induction range of the magnetic induction chip AS5041. At this time, if the workpiece to be measured is rotated, the radially magnetized Φ8×3 permanent magnet can rotate synchronously, and the gear measurement center measurement system can collect the angular position value of the workpiece to be measured through the magnetic induction chip AS5041.

[0009] Then, after the instrument measurement action starts, the lower center rotary spindle, driven by the torque motor, drives the measured workpiece to rotate synchronously through the driver to complete the measurement action. At the same time, the permanent magnet inside the upper center structure rotates synchronously, and the magnetic sensing chip AS5041 feeds back the collected upper center rotation angle value to the computer in real time;

[0010] During the entire measurement process, the computer acquisition system collects and compares the angle value fed back by the upper center with the angle encoder value inside the lower center rotary shaft in real time. In theory, the rotation angle data recorded at each moment should remain consistent. When the computer acquisition system detects that the comparison result exceeds the specified tolerance range, the computer program will issue a warning to the operator, automatically stop the measurement action, and prompt the operator to diagnose the cause of the error before continuing the measurement.

[0011] Beneficial effects:

[0012] 1. The present invention is a three-dimensional probe gear measurement center synchronous rotation error monitoring system, the structure of which can effectively avoid the situation in which the upper and lower centers are not synchronized in rotation accuracy during the debugging and testing of the three-dimensional probe gear measurement center, thus affecting the accuracy of data during the instrument debugging and testing process. At the same time, the synchronous rotation error monitoring system can improve the working efficiency of the three-dimensional probe gear measurement center.

[0013] The present invention can enable a computer connected to the instrument to collect and display data during the debugging and testing process of the three-dimensional probe gear measuring center through the upper and lower center synchronous rotation error diagnosis system of the three-dimensional probe gear measuring center. If the data is not within a reasonable tolerance range, the computer connected to the instrument can make a diagnosis for the operator and issue a warning.

[0014] The present invention can improve the accuracy of measurement data of a three-dimensional probe gear measurement center, reduce the time for debugging and testing the three-dimensional probe gear measurement center, effectively improve work efficiency, and reduce testing costs.

[0015] The material of the upper center, bearing and spring sleeve of the present invention is bearing steel, specifically GCr15. The selection of the above material can ensure good processability, high and uniform hardness, and good wear resistance in the measurement work of the three-dimensional gear measurement center. At the same time, the higher elastic limit of the material can maintain stable rotation accuracy during work and increase the service life of the monitoring system.

[0016] The retainer of the present invention is made of polytetrafluoroethylene, which has the advantages of being light in overall weight, having excellent corrosion resistance, and maintaining excellent mechanical properties in a wide temperature range. At the same time, the friction coefficient of the material is moderate, which fully meets the design requirements of the three-dimensional probe gear measurement top synchronous rotation error monitoring system.

[0017] In order to improve the accuracy of the synchronous rotation precision value of the upper and lower centers of the three-dimensional probe gear measurement center during the debugging and detection process, the present invention provides a three-dimensional probe gear measurement center upper and lower centers synchronous rotation error diagnosis system with high accuracy and high detection efficiency. Before the workpiece to be measured is clamped, the spring in the three-dimensional probe gear measurement center upper and lower centers synchronous rotation error diagnosis system (hereinafter referred to as the synchronous rotation error diagnosis system) is in a relaxed state. At this time, the radially magnetized Φ8×3 permanent magnet and the magnetic sensing chip AS5041 are in a separated state. After the workpiece to be measured is clamped on the upper and lower centers of the three-dimensional probe gear measurement center, the spring is in a compressed state. Due to the spring force In this case, the radially magnetized Φ8×3 permanent magnet and the magnetic sensing chip AS5047 are close to the sensing position. This is the pre-working state of the synchronous rotation error diagnosis system. When the three-dimensional probe gear measurement center is working, the computer connected to the three-dimensional probe gear measurement center collects data through the synchronous rotation error diagnosis system in the upper top component and the high-precision angle encoder in the lower top component. The computer displays the test data on the computer screen through the supporting software. The supporting software compares the test data to determine whether the test data is within a reasonable tolerance range. If the data is not within a reasonable tolerance range, the supporting software will diagnose the cause of the problem and issue a warning to the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1It is a structural schematic diagram of the present invention.

[0019] Among them: 1. Upper center, 2. Bushing, 3. Cage, 4. Positioning pin, 5. Bearing, 6. Spring sleeve, 7. Spring, 8. Magnetic chip, 9. Permanent magnet, 10. Photoelectric Hall switch. DETAILED DESCRIPTION

[0020] Embodiment 1:

[0021] A three-dimensional probe gear measurement center synchronous rotation error monitoring system, which comprises: a sleeve 2, characterized in that: an upper center 1 is installed on the left side of the sleeve, a retaining frame 3 is installed between the upper center and the sleeve, the tail of the upper center is connected to the inner rod by a bolt, a bearing 5 is installed on the left side of the inner rod and the end face of the spring sleeve 6, a spring 7 is installed between the inner rod and the spring sleeve, the right end of the inner rod has a groove, a permanent magnet 9 is installed in the groove, the right end of the sleeve is connected to the end cover by a thread, a magnetic induction chip 8 is installed on the outside of the end cover, and a photoelectric Hall switch 10 is installed in the hole below the sleeve.

[0022] Embodiment 2:

[0023] According to the three-dimensional probe gear measurement top synchronous rotation error monitoring system described in Example 1, a positioning pin 4 is installed in the middle position above the sleeve, the end cover is installed outside the sleeve, the retaining frame is made of polytetrafluoroethylene, the permanent magnet has a size of Φ8×3, and the magnetic induction chip uses the magnetic induction chip AS5041.

[0024] Embodiment 3:

[0025] A monitoring method for a three-dimensional probe gear measurement top synchronous rotation error monitoring system, the method comprising the following steps:

[0026] First, before the instrument detection work begins, align the positioning hole of the lower end of the workpiece to be measured and place it on the lower center equipped with the spindle encoder. The electronic control system of the three-dimensional gear measurement center controls the center column servo motor to drive the center support arm to move downward to shorten the distance between the upper and lower centers, so that the upper center in the upper and lower center synchronous rotation error diagnosis system of the three-dimensional probe gear measurement center is aligned with the positioning hole of the workpiece to be measured. During the downward movement of the upper center, the spring is compressed under the action of pressure until the upper end position of the upper center triggers the photoelectric Hall switch to stop the movement of the center support arm. At this time, the workpiece to be measured is pressed under the reaction force of the spring, and the gap between the radially magnetized Φ8×3 permanent magnet and the magnetic induction chip AS5041 reaches between 1mm-1.5mm, reaching the induction range of the magnetic induction chip AS5041. At this time, if the workpiece to be measured is rotated, the radially magnetized Φ8×3 permanent magnet can rotate synchronously, and the gear measurement center measurement system can collect the angular position value of the workpiece to be measured through the magnetic induction chip AS5041.

[0027] Then, after the instrument measurement action starts, the lower center rotary spindle, driven by the torque motor, drives the measured workpiece to rotate synchronously through the driver to complete the measurement action. At the same time, the permanent magnet inside the upper center structure rotates synchronously, and the magnetic sensing chip AS5041 feeds back the collected upper center rotation angle value to the computer in real time;

[0028] During the entire measurement process, the computer acquisition system collects and compares the angle value fed back by the upper center with the angle encoder value inside the lower center rotary shaft in real time. In theory, the rotation angle data recorded at each moment should remain consistent. When the computer acquisition system detects that the comparison result exceeds the specified tolerance range, the computer program will issue a warning to the operator, automatically stop the measurement action, and prompt the operator to diagnose the cause of the error before continuing the measurement.

[0029] The three-dimensional probe gear measurement center synchronous rotation error monitoring system described above performs upper and lower center synchronous error diagnosis through the internal encoder of the center of the three-dimensional probe gear measurement center and the synchronous rotation error diagnosis system; adds a synchronous rotation error diagnosis system, and through the synchronous rotation error diagnosis system, the upper and lower centers of the three-dimensional probe gear measurement center maintain uniform rotation accuracy during the debugging and testing process. During the testing process, the situation in which the upper and lower centers of the three-dimensional probe gear measurement center rotate out of sync is avoided, thereby avoiding the three-dimensional probe gear measurement center detection data being outside a reasonable tolerance range; cooperates with the electrical control system of the three-dimensional probe gear measurement center and works in coordination, and this application is only applicable to the three-dimensional probe gear measurement center.

[0030] The encoder rotation accuracy monitoring system of the present application plays the role of monitoring rotation errors, which can effectively avoid instrument calibration and detection errors caused by the asynchronous rotation accuracy of the upper and lower centers of the three-dimensional probe gear measurement center during the calibration and detection process, and provide error alarms to the operator in time, thereby improving the reliability of the detection structure of the three-dimensional probe gear measurement center and facilitating the diagnosis of instrument alarm errors.

Claims

1. A three-dimensional probe gear measurement top synchronous rotation error monitoring system, which comprises: The shaft sleeve is characterized in that: an upper top is installed on the left side of the shaft sleeve, a retaining frame is installed between the upper top and the shaft sleeve, the tail of the upper top is connected to the inner rod through a bolt, a bearing is installed on the left side of the inner rod and the end surface of the spring sleeve, a spring is installed between the inner rod and the spring sleeve, the right end of the inner rod has a groove, a permanent magnet is installed in the groove, the right end of the shaft sleeve is connected to the end cover through a thread, a magnetic induction chip is installed on the outer side of the end cover, and a photoelectric Hall switch is installed in the hole below the shaft sleeve; The monitoring method of the system includes the following steps: First, before the instrument detection work begins, align the positioning hole of the lower end of the workpiece to be measured and place it on the lower center equipped with the spindle encoder. The electronic control system of the three-dimensional gear measurement center controls the center column servo motor to drive the center support arm to move downward to shorten the distance between the upper and lower centers, so that the upper center in the upper and lower center synchronous rotation error diagnosis system of the three-dimensional probe gear measurement center is aligned with the positioning hole of the workpiece to be measured. During the downward movement of the upper center, the spring is compressed under the action of pressure until the upper end position of the upper center triggers the photoelectric Hall switch to stop the movement of the center support arm. At this time, the workpiece to be measured is pressed under the reaction force of the spring, and the gap between the radially magnetized Φ8×3 permanent magnet and the magnetic induction chip AS5041 reaches between 1mm-1.5mm, reaching the induction range of the magnetic induction chip AS5041. At this time, if the workpiece to be measured is rotated, the radially magnetized Φ8×3 permanent magnet can rotate synchronously, and the gear measurement center measurement system can collect the angular position value of the workpiece to be measured through the magnetic induction chip AS5041. Then, after the instrument measurement action starts, the lower center rotary spindle, driven by the torque motor, drives the measured workpiece to rotate synchronously through the driver to complete the measurement action. At the same time, the permanent magnet inside the upper center structure rotates synchronously, and the magnetic sensing chip AS5041 feeds back the collected upper center rotation angle value to the computer in real time; During the entire measurement process, the computer acquisition system collects and compares the angle value fed back by the upper center with the angle encoder value inside the lower center rotary shaft in real time. In theory, the rotation angle data recorded at each moment should remain consistent. When the computer acquisition system detects that the comparison result exceeds the specified tolerance range, the computer program will issue a warning to the operator, automatically stop the measurement action, and prompt the operator to diagnose the cause of the error before continuing the measurement.

2. The three-dimensional probe gear measurement center synchronous rotation error monitoring system according to claim 1 is characterized by: A positioning pin is installed in the middle position above the shaft sleeve, the end cover is installed outside the sleeve, the retaining frame is made of polytetrafluoroethylene, the permanent magnet has a size of Φ8×3, and the magnetic induction chip adopts the magnetic induction chip AS5041.

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