Ram five-shaft-head spigot and direct drive motor spigot assembly coaxiality detection method

Abstract

The invention belongs to the field of mechanical precision detection, and relates to a ram five-shaft head spigot and direct drive motor spigot assembly coaxiality detection method. According to the technical scheme, the method comprises the following steps that (1) a ram is fixed to a ram fixing tool, a direct drive motor is installed in the ram, and a direct drive motor spigot in the ram is used for positioning; 2) fixedly connecting the detection rod with a motor shaft of the direct drive motor by using a coupler; 3) installing a wheel meter tool on the motor shaft, and detecting the coaxiality of the swing head installation hole and the motor shaft and the run-out precision of the swing head installation end face through the wheel meter tool; (4) a magnetic gauge stand is attracted to a five-axis head spigot of the ram, a dial indicator is installed on the magnetic gauge stand, and a measuring head of the dial indicator is made to be perpendicular to the outer circle surface of the detection rod; and 5) slowly rotating the detection rod, and detecting the coaxiality of a plurality of positions of the detection rod through the dial indicator. According to the invention, the coaxiality of the spigot can be rapidly and accurately detected in the equipment assembling process, the detection efficiency and precision are improved, and the dependence on the technical level of detection personnel is reduced.

Description

Technical Field

[0001] This invention belongs to the field of mechanical precision testing, specifically relating to a method for testing the coaxiality of the assembly of the five-axis head stop of the slide block and the stop of the direct drive motor. Background Technology

[0002] In machining equipment, the precise assembly of the ram five-axis head and the direct drive motor is crucial for the equipment's operational accuracy and stability. Insufficient coaxiality between the ram five-axis head stop and the direct drive motor stop can cause additional vibration and noise during motor operation, reducing the motor's lifespan and affecting the machining accuracy of the equipment, leading to quality problems in the processed products.

[0003] Current testing methods have many shortcomings. When using conventional measuring tools, the complex structure of the slide ram five-axis head and direct drive motor, coupled with limited operating space, makes it difficult for the measuring tools to accurately contact the measuring part, resulting in low measurement accuracy. Some testing methods require disassembly of the equipment for measurement, which not only consumes a lot of time and manpower but may also introduce new assembly errors during reassembly. Existing testing methods require a high level of technical skill from the testing personnel, and the measurement results from different personnel may vary significantly. There is a lack of an efficient, accurate, and easy-to-operate testing method. Summary of the Invention

[0004] This invention provides a method for detecting the coaxiality of the five-axis head stop and the direct drive motor stop during the assembly of a slide block. This method can quickly and accurately detect the coaxiality of the stops during equipment assembly, improving detection efficiency and accuracy, and reducing reliance on the technical skills of the testing personnel.

[0005] The technical solution of the present invention is as follows:

[0006] A method for detecting the coaxiality of the assembly of the five-axis head stop of the slide block and the stop of the direct drive motor includes the following steps:

[0007] 1) Fix the slide block to the slide block fixture, install the direct drive motor into the slide block, and use the direct drive motor stop in the slide block for positioning;

[0008] 2) Use a coupling to fix the test bar to the motor shaft of the direct drive motor;

[0009] 3) Install a wheel gauge on the motor shaft and use the wheel gauge to check the coaxiality between the oscillating head mounting hole and the motor shaft, as well as the runout accuracy of the oscillating head mounting end face; the coaxiality and end face runout accuracy should both be no greater than 0.01.

[0010] 4) Attach the magnetic base to the stop of the five-axis head of the slide block, and install the dial indicator on the magnetic base, so that the probe of the dial indicator is perpendicular to the outer circle surface of the test bar.

[0011] 5) Slowly rotate the test bar and use a dial indicator to check the coaxiality of the test bar at multiple positions.

[0012] Furthermore, in the method for detecting the coaxiality of the five-axis head stop and the direct drive motor stop, the accuracy of the dial indicator is 0.001mm.

[0013] Furthermore, in the method for detecting the coaxiality of the slide ram five-axis head stop and the direct drive motor stop, step 5) is as follows: Observe the swing of the dial indicator pointer, record the maximum and minimum readings of the dial indicator within one revolution of the test bar, and half of the difference between the two is the coaxiality deviation between the slide ram five-axis head stop and the test bar; repeat the measurement 3-5 times for each measurement position, and then take the average value as the measurement result for that position; move the dial indicator along the axial direction of the test bar and perform measurements at multiple positions, taking the maximum value of the measurement results at each position as the coaxiality error between the slide ram five-axis head stop and the direct drive motor stop.

[0014] The beneficial effects of the present invention are as follows: the detection method of the present invention can quickly and accurately detect the coaxiality of the stop during the equipment assembly process, improve detection efficiency and accuracy, and reduce dependence on the technical level of the detection personnel. Attached Figure Description

[0015] Figure 1 This diagram illustrates how a coupling securely connects a test bar to the motor shaft of a direct-drive motor. Detailed Implementation

[0016] like Figure 1 As shown, a method for detecting the coaxiality of the assembly of the five-axis head stop of the slide block and the direct drive motor stop includes the following steps:

[0017] 1) Fix the slide block 1 on the slide block fixture, install the direct drive motor 2 into the slide block 1, and use the direct drive motor stop in the slide block 1 for positioning;

[0018] 2) Use coupling 3 to fix the probe 4 to the motor shaft of the direct drive motor;

[0019] 3) Install a wheel gauge on the motor shaft and use the wheel gauge to check the coaxiality between the oscillating head mounting hole and the motor shaft, as well as the runout accuracy of the oscillating head mounting end face; the coaxiality and end face runout accuracy should both be no greater than 0.01.

[0020] 4) Attach the magnetic base to the stop 5 of the five-axis head of the slide block, install the dial indicator on the magnetic base, and make the probe of the dial indicator perpendicular to the outer circle surface of the test bar 4. The accuracy of the dial indicator is 0.001mm.

[0021] 5) Slowly rotate the detection rod 4, and detect the coaxiality of the detection rod 4 at multiple positions by using the dial gauge; observe the swing of the dial gauge pointer, record the maximum reading and the minimum reading of the dial gauge within one rotation of the detection rod 4, and the half of the difference between the maximum reading and the minimum reading is the coaxiality deviation of the slide five-axis head stop 5 and the detection rod 4, for example, the maximum reading is 0.03 mm, and the minimum reading is 0.01 mm, then the coaxiality deviation is (0.03-0.01) / 2=0.01 mm; repeat the measurement 3-5 times for each measurement position, and then take the average value as the measurement result of the position; through multi-point measurement, the coaxiality of the stop can be more comprehensively reflected, and the accuracy of the measurement can be improved; move the dial gauge along the axial direction of the detection rod 4, and measure at multiple positions, and take the maximum value of the measurement results of the positions as the coaxiality error of the slide five-axis head stop 5 and the direct drive motor stop.

[0022] Record the measured coaxiality error data in detail, and draw an error distribution chart. Through the analysis of the data, it is judged whether the assembly of the slide five-axis head stop 5 and the direct drive motor stop meets the design requirements. If the error exceeds the allowable range, analyze the causes of the error, such as the stop machining precision problem, improper operation in the assembly process, etc., and take corresponding adjustment measures, such as repairing the stop, re-adjusting the assembly position, etc.

[0023] During the measurement process, attention should be paid to the influence of environmental factors such as temperature and vibration, and the measurement should be carried out in a constant temperature and stable environment to reduce the interference of environmental factors on the measurement results.

[0024] After judging that the assembly of the slide five-axis head stop 5 and the direct drive motor stop meets the design requirements, remove the detection rod 4, connect the five-axis head and the motor shaft of the direct drive motor 2 through the coupling 3, and use the slide five-axis head stop 5 to position the five-axis head.

Claims

1. A method for detecting the coaxiality of a ram five-axis head socket and a direct-drive motor socket, characterized in that, It comprises the following steps: 1) fixing the ram on the ram fixture, and installing the direct drive motor in the ram and positioning it by the direct drive motor stop in the ram; 2) fixing and connecting the probe and the motor shaft of the direct drive motor together by the shaft coupling; 3) installing the wheel gauge on the motor shaft, and detecting the coaxiality of the swing head mounting hole and the motor shaft and the end face runout precision of the swing head mounting end by the wheel gauge; the coaxiality and the end face runout precision are both required to be not more than 0.01; 4) adsorbing the magnetic table seat at the ram five-axis head stop, and installing the micrometer on the magnetic table seat so that the measuring head of the micrometer is perpendicular to the outer circular surface of the probe; 5) slowly rotating the probe, and detecting the coaxiality of multiple positions of the probe by the micrometer.

2. The ram five-axis head box and direct drive motor box assembly coaxiality detection method of claim 1, wherein, The precision of the micrometer is 0.001 mm.

3. The ram five-axis head neck and direct drive motor neck assembly coaxiality detection method of claim 1, wherein, In the step 5), the specific process is as follows: observing the swing of the micrometer pointer, recording the maximum reading and the minimum reading of the micrometer within one rotation of the probe, and the half of the difference between the maximum reading and the minimum reading is the coaxiality deviation of the ram five-axis head stop and the probe; repeating the measurement for 3-5 times for each measurement position, and then taking the average value as the measurement result of the position; moving the micrometer along the axial direction of the probe, and measuring at multiple positions, and taking the maximum value of the measurement results of the positions as the coaxiality error of the ram five-axis head stop and the direct drive motor stop.

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