Device and method for determining accumulated lead errors of ball screw shaft

A ball screw shaft and error measurement technology, applied in the direction of measuring devices, mechanical measuring devices, transmission devices, etc., can solve the problems of large reproducibility deviation, difficult precision measurement, and measurement errors
CN102809350AActive Publication Date: 2012-12-05SINTOKOGIO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SINTOKOGIO LTD
Publication Date
2012-12-05

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Abstract

The invention relates to a device and a method for determining accumulated lead errors of a ball screw shaft. The device (S1) for determining accumulated lead errors of a ball screw shaft comprises a fixing supporting platform (1) by which the ball screw shaft (W) to be determined is fixed and cannot rotate, a ball contact (5) which abuts against a thread groove of the ball screw shaft to be determined, a ball contact sliding mechanism (4) which enables the ball contact to perform reciprocating motion along the direction orthogonal to a shaft center of the ball screw shaft to be determined and to abuts against the thread groove under the effect of a specified pressing force, a position detection sliding mechanism (3) which enables the ball contact sliding mechanism to perform reciprocating motion horizontally in parallelism with the shaft center, a positioning reciprocating sliding mechanism which enables the position detection sliding mechanism to perform reciprocating motion in the thread part of the ball screw shaft to be determined, and a lead position determining mechanism (6) which detects he position of the ball contact in the direction of the shaft center.
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Description

technical field

[0001] The present invention relates to a device for measuring the cumulative lead error of a ball screw shaft and a measuring method using the device. Background technique

[0002] Conventionally, as a device for measuring the lead error of a ball screw shaft, for example, a measuring device disclosed in Patent Document 1 is known. In this measuring device, a ball of the same size as the ball used for the ball screw shaft to be measured is bonded to the tip of the ball contact, and two ball contacts are centered on the axis of the ball screw shaft to be measured. And it is inserted into the thread groove of the ball screw shaft to be measured at a position staggered by 180 degrees. Then, the measurement pressure is applied in the radial direction of the screw shaft, and the ball screw shaft is rotated while the ball screw shaft to be measured is in contact with the tooth surface on both sides of the thread groove, and the ball is measured by a laser interfe...

Claims

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