Couple-part symmetry-degree zero-error positioning device

A positioning device and zero-error technology, which is applied in the field of positioning fixture devices for even parts, can solve problems such as limiting the machining accuracy of even parts and affecting product quality, and achieve the effects of low cost, simple structure and wide application range
CN102909668AActive Publication Date: 2013-02-06HUAQIAO UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAQIAO UNIVERSITY
Publication Date
2013-02-06

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Abstract

The invention discloses a couple-part symmetry-degree zero-error positioning device, which comprises a substrate, a positioning assembly, two clamping adjusting assemblies and two pneumatic clamping assemblies; the position of a rotary positioning screw in the positioning assembly is fixed and adjusted by adopting the helical-type self-centering compression way, the two clamping adjusting assemblies and the two pneumatic clamping assemblies realize synchronous and symmetric clamping and adjustment so as to limit the freedom of a couple part in the left-right direction, other degrees of freedom of the couple part are limited by utilizing a front baffle plate, a rear baffle plate and a pressure plate simultaneously, so that the couple part is clamped and positioned. The device utilizes the advantages of a centering clamping way and a synchronous symmetric movement way to avoid the influence of installation error and repetition precision error on the positioning error of the position, so that the zero-error positioning precision requirement of the couple part is realize theoretically. The couple-part symmetry-degree zero-error positioning device is simple in structure and strong in practicability; and moreover, the positioning position of the couple parts also can be adjusted according to real requirement. The device is also applicable to the positioning of multiple couple parts and wide in application range.
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Description

technical field

[0001] The invention relates to the technical field of even-piece positioning fixture devices, in particular to a pair-piece symmetry zero-error positioning device. Background technique

[0002] Coupled parts are mating parts that cooperate with each other and have high requirements for cooperation, that is, parts that are precisely matched to each other. The positioning accuracy of the paired parts directly affects the processing accuracy. Usually, the position positioning error in the traditional positioning and clamping scheme is affected by the installation error and the repeatability error, which seriously limits the machining accuracy of the pair and affects the product quality.

[0003] Such as image 3 As shown, the source of positioning error mainly consists of two parts: reference position error and reference misalignment error: Δ dw =Δ jw +Δ jb , where: Δ dw - is the positioning error; Δ jw — is the reference position error; Δ jb — is the dat...

Claims

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