Measuring method for microscopic height of thread of end seal of workpiece

A technology of height measurement and measurement method, applied in the field of measurement, can solve the problems of increased production cost, difficulty in inspection operation level, inconvenience, etc., and achieve the effect of low cost and flexible measurement method

CN104251652AInactive Publication Date: 2014-12-31沈阳罕王精密轴承有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-12-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a measuring method for microscopic height of a thread of an end seal of a workpiece; measurement is finished by the measuring method by adopting a market-available universal feeler gauge and a market-available universal knife straight edge. The measuring method for the microscopic height of the thread of the end seal of the workpiece comprises the following steps: firstly enabling the measuring end of the knife straight edge, i.e. the blade part, to ride on any chord length of concentric circles of the thread of the end seal of the workpiece, wherein a gap is formed between the extension part of the knife straight edge and the sealing face of the workpiece; then, filling the gap with one or more than one feeler gauge with known thickness, and computing a nominal value of known thickness, i.e. the actual measurement dimension of the microscopic height of the concentric circle thread. According to the measuring method disclosed by the invention, by adopting the principles that the gap is formed between the extension part of the knife straight edge and the sealing face of the workpiece, and then, the gap is measured with the feeler gauge, the dimension of the gap is directly measured, and therefore the height of the concentric circle thread is obtained; the knife straight edge and the feeler gauge are both measuring tools; the measuring method is low in cost and flexible.
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Description

technical field

[0001] The invention relates to the technical field of measurement, in particular to a method for measuring the microcosmic height of a tooth profile of a sealing port of a workpiece. Background technique

[0002] At present, the quality inspection of the manufacturing process in the parts manufacturing industry is limited by time and space. Not all dimensions on the drawing are easy to measure directly. Microcosmic height is difficult to obtain data directly without the aid of modern measuring instruments such as projectors and CMMs. figure 2 , image 3 The theoretical value of the concentric crest height of the workpiece sealing port is less than or equal to 0.5mm, which basically cannot be obtained directly with general-purpose measuring tools. The development of special measurement tools requires a higher cost. figure 2 , image 3 Among them, the method of measuring the height of concentric circles is generally to cut first, then project the zigzag s...

Examples

Embodiment Construction

[0012] The invention discloses a method for measuring the microcosmic height of a tooth profile of a sealing mouth of a workpiece. The measuring method adopts a commercially available feeler gauge 3 and a knife-edge ruler 2 to complete the measurement. The method for measuring the microcosmic height of the tooth form of the sealing port of the workpiece comprises the following steps:

[0013] A. Use the knife-edge ruler 2 to measure the length of any chord of the concentric circle 5 of the tooth profile of the sealing port of the workpiece 1. The extension part forms a gap with the sealing surface of the workpiece 1.

[0014] B. Fill the gap with one or several pieces of known thickness in the feeler gauge 3, and calculate the nominal value of the known thickness to be the actual measurement size of the microcosmic height of the concentric circle tooth type 4.

[0015] Knife-edge ruler and feeler gauge are general measuring tools with flexible measuring methods, see figure 1...