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Positioning accuracy quick measuring mechanism of numerically controlled revolving dial

A technology of a rotary table and a measuring mechanism, which is applied in the direction of measuring devices, measuring/indicating equipment, metal processing machinery parts, etc., can solve the problems of machining accuracy limitations, measurement accuracy limitations, and inability to measure dynamically, achieving high measurement accuracy, The effect of good stability of indication value and fast measurement speed

Inactive Publication Date: 2007-12-05
CHENGDU TOOL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Use the instrument shown in Figure 17 to measure the positioning accuracy of the CNC rotary table. From the installation and debugging of the instrument to the measurement result data, different measurement personnel have different proficiency and experience in the measurement operation, and the time spent is also different. And it is accidental; because most of these instruments use drums and precision screw rods for micrometer readings, they are limited by the precision of machining, and the stability of the collimator electric box and photoelectric autocollimator is limited, so that the measurement accuracy is limited
[0005] Applying the reading drum mechanism of the photoelectric autocollimator in Figure 17 to the grating reading system can improve the resolution, but cannot improve the measurement speed and measurement accuracy
[0006] Using a laser small-angle measurement system to measure the positioning accuracy of the CNC rotary table, the measurement accuracy is high, but the measurement speed is still slow and cannot be dynamically measured
[0007] Using a digital display autocollimator and a polygonal prism to measure the positioning accuracy of the CNC rotary table can improve the measurement accuracy, but the airflow and vibration in the measurement environment are required to be small, the measurement speed is still slow, and dynamic measurement is not possible

Method used

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  • Positioning accuracy quick measuring mechanism of numerically controlled revolving dial
  • Positioning accuracy quick measuring mechanism of numerically controlled revolving dial
  • Positioning accuracy quick measuring mechanism of numerically controlled revolving dial

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The circular grating with built-in bearing and stator coupling is used as the reference element for angle measurement, and the eccentric measurement length meter moves according to the eccentricity, as shown in Figures 1, 2, 3, 4, 5, and 6.

[0036] Angle measurement is composed of base plate 1, shaft plate 4, support plate 6, connecting ring 8, main shaft 10, positioning sleeve 31, positioning nail 32, circular grating 9, thrust ball bearing 29 and so on. The circular grating 9 is fastened together with the support plate 6 with the screw 7, the connecting ring 8 is fastened with the support plate 6 with the screw 27, the main shaft 10 is connected with the first circular grating 9 with the ring nut 11, and the thrust ball bearing 29 Part of it is installed on the shaft shoulder of the main shaft 10, and then the shaft plate 4 is installed on the main shaft 10, and the shaft plate 4 is fixedly connected with the support plate 6 with the screw 5, and a part of the thrust ...

Embodiment 2

[0045] The first circular grating with built-in bearing and stator coupling is used as the reference element for angle measurement, and the eccentric measurement length meter is fixed, as shown in Figures 3, 4, 5, 7, 8, and 9.

[0046] Angle measurement is still composed of base plate 1, shaft plate 4, support plate 6, connecting ring 8, main shaft 10, positioning sleeve 31, positioning nail 32, circular grating 9, thrust ball bearing 29, etc., and its connection and assembly methods are the same as in Example 1 exactly the same.

[0047] The eccentric measurement consists of a support block 13, an optical axis 14, a first connecting plate 15, a second connecting plate 17, a connecting rod 19, a limit post 22, a positioning nail 24, a support 36, a shifting block 46, an anvil 50 and a pen type Length meter 37, permanent magnet 48, needle roller or hardened cylindrical pin 49 etc. form. The first connecting plate 15 is fastened with the connecting ring 8 with screws 25. After ...

Embodiment 3

[0052] Use the RESR circular grating as the reference element for angle measurement, and the eccentric measurement length meter moves according to the eccentricity, as shown in Figures 5, 6, 10, 11, 12, 13, and 14.

[0053] Angle measurement consists of base plate 1, main shaft 10, first connecting plate 15, positioning sleeve 31, positioning nail 32, washer 56, steel ball spacer 57, ring 58, shaft sleeve 59, spacer 62, adjustable washer 63, pressure plate 64, seat 69, adjustment seat 72 and steel ball 55, circular grating engraved line ring 70 and reading head 71 etc. are formed. The main shaft 10, the washer 56, the steel ball isolation ring 57, the shaft sleeve 59, the isolation sleeve 62, the adjustable washer 63, the pressure plate 64, the steel ball 55, and the screw 65 form a rolling shaft system with axial and radial interference. The shaft sleeve 59 is fixed with the first connecting plate 15 with the screw 66, the ring 58 is fastened with the screw 68 on the main sha...

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PUM

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Abstract

The present invention is fast measuring mechanism for the location precision of numerically controlled rotary table in numerically controlled machine tool. The fast measuring mechanism includes one main shaft connected to the bottom plate and located in the central hole of the numerically controlled rotary table, one circular grating with scale ring connected to the main shaft, one circular grating seat connected to the axle sleeve, one first connecting board connected to the circular grating seat and one bare shaft, one first connected board to a cartridge, and two pen type length gauges connected separately to the first and the second connecting board.

Description

Technical field: [0001] The invention relates to a measuring device for the positioning accuracy of a numerically controlled rotary table of a numerically controlled machine tool. Background technique: [0002] The measurement of the positioning accuracy of the CNC rotary table of the CNC machine tool is very troublesome and time-consuming, and the measurement accuracy is not high. Improving measurement speed and measurement accuracy has become a difficult problem for metrologists. [0003] The traditional measurement method of the CNC rotary table is to use a polygonal prism and a photoelectric autocollimator, as shown in Figure 17 below. The multi-faceted prism is installed on the rotary center of the CNC rotary table and rotates synchronously with the table; the photoelectric autocollimator must be installed firmly, the collimator electric box and the collimator light tube power supply are well connected with the photoelectric autocollimator, and the power supply After ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/24G01B11/00G01B11/26
Inventor 梁军邓上刘洋徐之江
Owner CHENGDU TOOL RES INST