Device and method for detecting accuracy of numerical control and static pressure turntable
A detection device and precision detection technology, applied in the direction of measuring devices, mechanical measuring devices, mechanical devices, etc., can solve the problems of reliability, durability and accuracy retention gap, achieve simple and reliable methods, improve assembly quality and efficiency , The effect of convenient operation of the device
Active Publication Date: 2011-04-13
NANJING GONGDA CNC TECH
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Problems solved by technology
Compared with foreign turntables, domestic high-precision turntables have a certain gap in reliability, durability and accuracy retention.
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[0036] The technical content of the present invention will be described below in conjunction with the accompanying drawings:
[0037] figure 1 It is a schematic diagram of the structure of the inspection turntable. The main guide rail between the base 4 and the faceplate 3 adopts a constant current static pressure oil supply method, which is divided into 6 oil chambers; figure 2 The hydraulic principle diagram showing the leakage of the constant-flow static pressure oil cavity of the main guide rail. The sum of the leakage and the theoretical flow rate of the floating guide rail is the oil intake, and the "leakage rate η" l " is the percentage of leakage to the total oil intake, and is a multivariate function that varies with the relative position of the faceplate base, load, oil temperature, unloading pressure, flow rate and other factors. In order to facilitate detection, only the relationship between oil film thickness and flow rate is considered. ;In the case of no-load,...
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The invention relates to a device for detecting accuracy of a numerical control and static pressure turntable. The device comprises a leakage detecting device for a main guide rail constant-current static pressure oil chamber, a reverse clearance and mandrel clearance detecting device, and a mandrel excircle and base main guide rail installation verticality detecting device. A method for detecting the accuracy of the numerical control and static pressure turntable comprises the following steps of: a) detecting the leakage of the main guide rail constant-current static pressure oil chamber; b) detecting the reverse clearance; c) detecting the mandrel clearance; and d) detecting the mandrel excircle and base main guide rail installation verticality. The invention provides the detection device and the detection method mainly aiming at key indexes such as turntable floating amount, the reverse clearance, the mandrel clearance, the verticality and the like which influence the indexing accuracy and repositioning accuracy of the turntable. The method for detecting the accuracy of the turntable is simple and reliable, the device is convenient to operate, and the method and the device provide the basis for testing and adjusting the accuracy of the turntable. The device and the method for detecting the accuracy are also suitable for other turntables and numerical control equipment.
Description
technical field [0001] The invention relates to a precision testing device and method for a numerically controlled static pressure turntable, belonging to the technical field of machine tool testing. Background technique [0002] In 2010, the major project of high-end CNC machine tools and basic manufacturing equipment listed "high-speed and precision CNC rotary table" as the key research content, and at the same time included the supporting precision testing equipment as the research topic; The precision is 6″, and the manufacturing accuracy, bearing weight, service life and reliability of the product are close to the advanced level of similar products in the world.” The CNC hydrostatic rotary table is an important functional component of high-end CNC machine tools, accounting for about 1 / 4 to 1 / 4 of the machine tool cost. 3. Compared with foreign turntables, there is a certain gap in reliability, durability and accuracy retention between domestic high-precision turntables....
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Inventor 黄筱调于春建洪荣晶方成刚
Owner NANJING GONGDA CNC TECH