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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

Active Publication Date: 2015-02-25
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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  • Couple-part symmetry-degree zero-error positioning device
  • Couple-part symmetry-degree zero-error positioning device
  • Couple-part symmetry-degree zero-error positioning device

Examples

Experimental program
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Effect test

Embodiment Construction

[0059] See Figure 1 to Figure 8 As shown, it shows the specific structure of the preferred embodiment of the present invention, which includes a base 10, a positioning component, two clamping adjustment components and two pneumatic clamping components.

[0060] Such as Figure 8 As shown, the positioning assembly includes a rotating positioning screw 21, the rotating positioning screw 21 has a first threaded portion 211, a second threaded portion 212 and a pivoting portion 213 between the first threaded portion 211 and the second threaded portion 212 The first threaded part 211 and the second threaded part 212 are located at the left and right ends of the positioning screw 21 respectively and their threading directions are opposite. The pivoting part 213 is rotatably nested in the base 10 and the first threaded part 211 Both the second threaded part 212 and the second threaded part 212 are exposed outside the base, the aforementioned base 10 is provided with a limiting mecha...

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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.

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: △ dw =△ jw +△ jb , where: △ dw — is the positioning error; △ jw — is the reference position error; △ jb — is the dat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B11/00
Inventor 顾立志周宗志佘文志向铁明
Owner HUAQIAO UNIVERSITY
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