Mixed biasing type articulated arm measurement machine

An articulated arm and measuring machine technology, applied in the field of measuring machines, can solve the problems of increasing the moment of inertia of each articulated arm, reducing the rotation angle of the articulated arm, reducing the flexibility of operation, etc. light weight effect

Active Publication Date: 2015-12-16
CHINA PRECISION ENG INST FOR AIRCRAFT IND AVIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, there will also be many problems: when there is a bias, the center of gravity of each articulated arm will inevitably deviate from the axis of symmetry of the body, causing each arm to be biased, increasing the moment of inertia of each articulated arm, and making The factors that cause errors increase, and may even form new unmeasurable areas
However, the non-offset type arrangement will significantly increase the weight of the machine body, reduce the flexibility of operation, reduce the

Method used

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  • Mixed biasing type articulated arm measurement machine
  • Mixed biasing type articulated arm measurement machine
  • Mixed biasing type articulated arm measurement machine

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0070] Example one

[0071] The hybrid offset type articulated arm measuring machine consists of a first long shaft part 1, a first short shaft part 2, a second long shaft part 3, a second short shaft part 4, a third long shaft part 5, and a third short shaft part 6. , The probe connecting arm 7 is composed together.

[0072] The first long shaft component, the screw 18 fixes the first long shaft dense bead shaft system 19 on the first long shaft housing 12, the code wheel base 17, the code wheel 30, the code wheel pressure ring washer 33 and the code wheel pressure ring 29 The screw 16 is rigidly connected to the first long shaft dense ball shaft system 19 and is sequentially installed on the long shaft I31 through a hole-shaft fitting manner. The reading head bracket 13 is threadedly connected to the first long shaft housing 12, and the screw 15 rigidly connects the reading head 14 to the reading head bracket 13. The cover plate 11 is rigidly fixed to the first long shaft housi...

Example Embodiment

[0084] Example two

[0085] Remove the offsets in the first stub shaft part 2, the second stub shaft part 4, and the third stub shaft part 6, and compare the first long shaft part 1, the second long shaft part 3, the reading head slip ring assembly 113, The third long shaft part 5 and the probe connecting arm 7 undergo corresponding changes in shape to become the first long shaft part 174, the first short shaft part 173, the second long shaft part 172, the second short shaft part 171, and the reading head The slip ring assembly 170, the third long shaft part 169, the third short shaft part 168 and the probe connecting arm 167. Both the second long arm 88 and the third long arm 114 are transformed from a cylindrical thin-walled tube into two completely symmetrical elliptical cylindrical thin-walled tubes arranged symmetrically along the YZ plane and designed symmetrically along the ZX plane. That is, an unbiased articulated arm measuring machine (such as Figure 35 Shown).

[0086...

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Abstract

The invention, which belongs to the field of the measurement machine of numerical control precision measurement equipment, especially relates to an articulated arm type measurement machine with an articulated arm structure. The measurement machine arranged symmetrically along a ZX plane comprises five steering knuckles capable of moving freely and independently and seven connecting arm segments. The five steering knuckles are in a dual-point support mode and support points of all knuckles except the knuckle 4 are arranged symmetrically along the ZX plane; and the knuckles 1 and 4 are infinite rotation knuckles. The measurement machine has comprehensive advantages of flexible operation, high structural rigidity, and light weight and the like.

Description

technical field [0001] The invention belongs to a measuring machine in numerical control precision measuring equipment, in particular to an articulated arm type measuring machine with an articulated arm structure. Background technique [0002] The articulated arm coordinate measuring machine is a non-orthogonal system coordinate measuring machine. It imitates the joint structure of the human body, replaces the length reference with an angle reference, connects several rods and a measuring head in series through a rotating joint, one end is fixed, and the other end (the measuring head) can move freely in space, forming a spherical measurement space. [0003] The articulated arm measuring machine has: 1) large measuring range; 2) small size, light weight, portable, suitable for on-site use; 3) flexible movement, easy to operate, etc., but also has low accuracy (generally around tens of microns) lack of. [0004] At present, the main rotary joints of various types of articula...

Claims

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Application Information

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IPC IPC(8): G01B21/04
Inventor 郭霞范弥纶张洋赵世迁王磊杜海涛
Owner CHINA PRECISION ENG INST FOR AIRCRAFT IND AVIC
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