Device and method for measuring pitch diameter of extra-large straight thread with high precision in upper-limit-free way
A thread diameter, cylindrical technology, applied in the field of length measurement
Inactive Publication Date: 2014-11-26
SOUTHEAST UNIV
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Aiming at the problems existing in existing measuring methods, the present invention discloses a measuring device and measuring method for extra-large cylindrical thread pitch diameter with high precision, easy operation and no upper limit of measurement
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0054] The embodiment of the extra-large cylindrical thread pitch diameter measuring device of the present invention includes a bridging unit 1, a series of non-bridging units 2 with the same structure, a common inner diameter micrometer 3 for measuring the gap between balls, and an optional spacer slice 4 or optionally a spacer ball 5, where, as Figure 10 As shown, the bridging unit 1 includes a bridging unit body 11, two bridging unit positioning part spheres 12 protruding from the same side at both ends of the bridging unit body 11, and an inner part located on the bridging unit body 11. The bridging unit fixing mechanism 13 that contains the bridging unit permanent magnet 131 makes the bridging unit 1 integrally hollow arched; One end of the bridge unit is connected with a bridge unit permanent magnet 133, and the other end of the bridge unit screw rod 132 is connected with a bridge unit knob 133. Rotating the bridge unit knob 133 can make the bridge unit screw rod 132 mo...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a measuring device and a measuring method for the middle diameter of an extra large cylindrical thread. The device comprises a bridge unit, a series of non-bridge units with the same structure, a device for measuring the distance between balls, and an optional A spacer or an optional spacer ball. When measuring the pitch diameter of extra-large cylindrical threads, several non-spanning units (including spacers or spacer balls if necessary) are connected in series along the measured thread groove to form a non-spanning circle that is close to a circle. One end of the bridging unit is connected to one of the non-jumping units at the end of the non-jumping unit string, and the other end of the bridging unit is across the crest of the measured thread and the non-jumping unit at the end of the non-jumping unit Another non-crossover unit at the end of the string is adjacent, and the distance between the bridge unit and the adjacent non-bridge unit is measured by the device for measuring the distance between the ball and the ball. According to the geometric relationship, it can be calculated Measure thread diameter. The invention has the characteristics of high precision, easy operation, low cost and no measurement upper limit.
Description
technical field [0001] The invention discloses a device and a measurement method for precise measurement of the pitch diameter of extra-large cylindrical threads, belonging to the technical field of length measurement. Background technique [0002] The precision measurement of the pitch diameter of extra-large cylindrical threads, especially the pitch diameter of the internal threads, has long plagued the heavy equipment manufacturing industry. A commonly used method is the comb method. This method uses two comb-shaped probes that match the profile of the thread to be measured to zero on a standard device first, and then measures the pitch diameter of the thread to be measured. Because it is necessary to find the inflection point along the helical surface, the operation is difficult and the accuracy is not easy to guarantee. Moreover, as the pitch diameter of the measured thread increases, the size and weight of the measuring device increase simultaneously, the device deform...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/12
Inventor 李彬
Owner SOUTHEAST UNIV