CN101608893A

CN101608893A - Needle roller, small roller roundness measuring instrument

Info

Publication number: CN101608893A
Application number: CNA2009101624764A
Authority: CN
Inventors: 陈继君; 沈奇
Original assignee: Wuxi Tongda Roller Co Ltd
Current assignee: Wuxi Tongda Roller Co Ltd
Priority date: 2009-08-06
Filing date: 2009-08-06
Publication date: 2009-12-23
Anticipated expiration: 2029-08-06
Also published as: CN101608893B

Abstract

The invention discloses a kind of roundness measuring instrument of measuring small-sized cylindrical circularity such as needle roller, small roller, comprise circularity data acquisition end, instrumented data measuring junction, be connected by the connecting rod that plays leverage between circularity signals collecting end and the instrumented data measuring junction, the middle part of described connecting rod is connected with a damping spring or extension spring with a plane spring; Can the diverse location assembling through the plane spring at connecting rod middle part, make originally very that the small circular deviation signal obtains doubly above amplification, and then measure, can obtain more accurate measurement result.Roundness measuring instrument of the present invention, solved inter process to the measurement control of circular deviation, to have solved the position stability that inter process is measured circular deviation, solved the sensitivity that inter process measures circular deviation be accuracy.

Description

Needle roller, small roller roundness measuring instrument

Technical field

The present invention relates to a kind of roundness measuring instrument, measure the measuring instrument of small-sized right cylinder circularity such as needle roller, small roller specifically.

Background technology

The roundness measurement of bearing small roller, needle roller is a ubiquitous commercial measurement difficult problem in each bearing needle production scene.Small roller, needle roller work in-process are generally all used the processing of centreless grinding penetration type, per hour can finish ten thousand of 10-15, about the about 220-300 of per minute props up, along with factors such as emery wheel passivation threshing and frock wearing and tearing, the stabilization sub stage of " zero " circular deviation and the unstable stage of circular deviation often appear, and when the unstable obvious time of rule neither one appears, so in the part processing process, often need about 5-10 minute to measure once, when finding the defective or precise decreasing of product, carry out the emery wheel reparation.Some relatively large factories generally can dispose roundness measuring equipment at measuring room, and the price of roundness measuring equipment is more expensive, thus often only dispose one, and the measurement of inter process can only be carried out Measurement and analysis when the product initial workpiece, and the measurement in the process does not just have available instrument.If roundness measuring equipment is more impossible finished the once property monitored measurement about every 5-10 minute because of the scene can not dispose when there were tens centerless grinders in a factory, so the reliability of product quality just produces serious instability.

Some producer replaces with milscale for the monitoring that solves inter process, as shown in Figure 1, 2, makes Workpiece Rotating with the finger turning of work piece, observes pointer and changes.But because the miking point is two planes, contact point is two straight lines, during with surface of the work micro-pits or circularity over tolerance, because milscale sensitivity is low during this situation, can not correctly measure " zero " degree situation, the circularity of small roller can be surveyed on the D051 instrument, as shown in Figure 3.But when roller needle roller diameter and length ratio surpass 1: 3 or 1: 4 when above, because the location is unstable, with the hand turning of work piece time, it is unsettled rotating with location reason workpiece because of gesture, correctly measure its circularities, particularly length more difficult correct measurement when above so be difficult to survey than 1: 5.

Domestic using with long roller measurement control measurement at the scene in the needle roller measurement at present only has lever type micrometer, the indication of band pointer, as its sensitivity that is mentioned before becomes wire to contact with surface of contact, so can not normally accurately satisfy in-site measurement precision needs, the lever-type micrometer scale is 1um one lattice, when circular deviation＜1um or＜just can not normally indicate during 0.5um, subject matter is that sensitivity is too low.Survey again because orientation problem can't realize accurately measuring making error very big with the D051 instrument, more can not correctly test., location low except that sensitivity regardless of surveying on lever-type micrometer or on the D051 instrument is inaccurate, because it is manual making the power of Workpiece Rotating, it is very big that the weight that exists gesture influences meeting to workpiece, so exist runaway condition, the real still accuracy problem of location that exists.So being controlled in the needle roller production run to circular deviation in order to be badly in need of very much the technical barrier of solution.The present domestic like product that do not find as yet.

Summary of the invention

The purpose of this invention is to provide a kind of needle roller, small roller roundness measuring instrument, solve the lower problem of poor stability, measuring accuracy of common small sized cylindrical measurement instrument workpiece polarization.

The objective of the invention is to be achieved through the following technical solutions:

A kind of needle roller, small roller roundness measuring instrument, comprise circularity data acquisition end, instrumented data measuring junction, be connected by the connecting rod that plays leverage between circularity signals collecting end and the instrumented data measuring junction, the middle part of described connecting rod is connected with a damping spring or extension spring with a plane spring; Described circularity data acquisition end comprise supporting workpiece V-block, drive the handwheel of Workpiece Rotating and measure tongue with the contacted knife edge type of workpiece, described knife edge type is measured tongue and is fixed on the connecting rod, the top of measuring tongue is passed V-block and is contacted with workpiece; Described instrumented data measuring junction comprises the measuring table that is fixed on the connecting rod, is installed in the gauge head on the measuring table and shows the torsion spring table that gauge head reverses; The V-shaped angle of the bayonet socket of described V-block, the angular range at described " V " clevis angle is between 60 °-90 °.

Roundness measuring instrument of the present invention, solved inter process to the measurement control of circular deviation, to have solved the position stability that inter process is measured circular deviation, solved the sensitivity that inter process measures circular deviation be accuracy.

Specifically, having solved inter process measurement to circular deviation in process controls, can measure at any time and grasp the circular deviation state of workpiece, realize measurement once in every 5-10 minute, avoid the qualified but underproof situation of product that produce afterwards of initial workpiece product.

Simultaneously, owing to adopt the edge of a knife shape V fork location of two 60 ° or 90 °, and have rubber wheel to drive workpiece rotational speed is accomplished substantially at the uniform velocity, shows more directly perceived accurately, more solved orientation problem owing to adopt 60～90 ° of V-arrangements to pitch.As figure four, workpiece leans against 60 ° or 90 ° of double-pole degree of lip-rounding V and sticks.Can make the round-shaped 3 or 2 times of amplifications of difference that when triangular in shape and pentagon, obtain, when foot is owed in the sensitivity of instrument enlargement factor, can adjust the spring leaf position, sensitivity is improved.

In addition, because reference part adopts two knife edge type contacts location, also effectively avoided the influence of workpiece cleanliness.The hilted broadsword dispute of adopting 0.0005 gauge outfit and workpiece directly to contact has guaranteed the precision of measuring.

Description of drawings

With embodiment the present invention is described in further detail with reference to the accompanying drawings below.

Fig. 1 is the synoptic diagram that adopts miking circularity;

Fig. 2 is the synoptic diagram that adopts miking circularity;

Fig. 3 is the synoptic diagram that the D051 instrument is measured circularity;

Fig. 4 is the schematic diagram of roundness measuring instrument of the present invention;

Fig. 5 is the main TV structure figure of roundness measuring instrument of the present invention;

Fig. 6 is the test structure figure of roundness measuring instrument of the present invention.

Among the figure:

10, circularity data acquisition end; 11, knife edge type is measured tongue; 12, V-block; 13, handwheel;

20, instrumented data measuring junction; 21, measuring table; 22, gauge head; 23, torsion spring table;

3, connecting rod; 4, plane spring; 5, damping spring or extension spring; 6, workpiece.

Embodiment

Shown in Fig. 4-6, needle roller, small roller roundness measuring instrument, comprise circularity data acquisition end 10, instrumented data measuring junction 20, be connected by the connecting rod 3 that plays leverage between circularity signals collecting end 10 and the instrumented data measuring junction 20, the middle part of described connecting rod 3 is connected with a damping spring or extension spring 5 with a plane spring 4; Described circularity data acquisition 10 ends comprise supporting workpiece 6 V-block 12, drive the handwheel 13 of workpiece 6 rotations and measure tongues 11 with workpiece 6 contacted knife edge type, described knife edge type is measured tongue 11 and is fixed on the connecting rod 3, and the top of measurement tongue 11 is passed V-block 12 and contacted with workpiece 6; Described instrumented data measuring junction 20 comprises the measuring table 21 that is fixed on the connecting rod 3, is installed in the gauge head 22 on the measuring table 21 and shows the torsion spring table 23 that gauge head reverses; The V-shaped angle of the bayonet socket of described V-block 12, the angular range at described " V " clevis angle is between 60 °-90 °.

In the measuring process, workpiece 6 is put into 60 ° of V-blocks 12 that contacted by the double-pole mouth, the design of double-pole mouth has solved the reliable and minimizing surface of contact in location, makes benchmark more reliable and more stable.Rotating handwheel 13 rotates workpiece 6, because V-block 12 is 60 °, after workpiece 6 rotates, workpiece 6 is because of on its shape is in V-block 12, under change, be that workpiece 6 directly contacts with measurement tongue 11, measure tongue 11 and be edge of a knife shape with workpiece 6 contact positions, the variation of workpiece 6 is passed to connecting rod 3 by measuring tongue 11, at the medium position of connecting rod 3 plane spring 4 is housed and finishes the balance pivot effect, damping spring (or extension spring) 5 also is housed on connecting rod 3, damping spring or extension spring 5 an one side damping are carried out damping to the workpiece rotational vibrations makes measurement tongue 11 be close on the workpiece simultaneously, measure properer, measuring table 21 is fastened on the connecting rod 3 and directly contacts with high precision torsion spring table 23, if on the gauge outfit of torsion spring table 23, amplified through double-pole mouth V-block 12 when this moment, workpiece was triangular or five ribs, also the plane spring 4 at process connecting rod 3 middle parts can assemble by diverse location simultaneously, making originally very, the small circular deviation signal obtains amplifying more than 3 times, so the reading on torsion spring table 23 is just bigger, torsion spring table 23 is shown with 0.0005, being triangular measuring room measured value as workpiece is 1.5um, then on the torsion spring table, read the reading about 4um-4.5um, part 1 rotate and workpiece 6 owing to be triangular, have and rock for three times when workpiece 6 rotates a Zhou Shike; When workpiece 6 is five ribs, can read the reading about 2.5um-3um on this instrument, Workpiece Rotating one all indicators have and rock for five times, machining tool are adjusted according to the parameter workman who reads in good time, played supervisory function bit, guaranteed that institute's product processed satisfies technological requirement.

This instrument is only applicable to the measurement monitoring of the circular deviation between the following mill of Φ 6 (Φ 8) manufacturing procedure, achieves good results through the rig-site utilization about 5 years.Through transposing double-pole mouth V-block opening, can measure the circular deviation of Φ 10 left and right sides workpiece.

Claims

1, a kind of needle roller, small roller roundness measuring instrument comprise circularity data acquisition end, instrumented data measuring junction, it is characterized in that, are connected by the connecting rod that plays leverage between circularity signals collecting end and the instrumented data measuring junction.

2, needle roller according to claim 1, small roller roundness measuring instrument is characterized in that, the middle part of described connecting rod is connected with a plane spring.

3, needle roller according to claim 2, small roller roundness measuring instrument is characterized in that, the middle part of described connecting rod is connected with a damping spring or extension spring.

4, needle roller according to claim 3, small roller roundness measuring instrument is characterized in that, described instrumented data measuring junction comprises the measuring table that is fixed on the connecting rod, is installed in the gauge head on the measuring table and shows the torsion spring table that gauge head reverses.

5, needle roller according to claim 3, small roller roundness measuring instrument, it is characterized in that, described circularity data acquisition end comprise supporting workpiece V-block, drive the handwheel of Workpiece Rotating and measure tongue with the contacted knife edge type of workpiece, described knife edge type is measured tongue and is fixed on the connecting rod, and the top of measurement tongue is passed V-block and contacted with workpiece.

6, needle roller according to claim 5, small roller roundness measuring instrument is characterized in that, the V-shaped angle of the bayonet socket of described V-block.

7, needle roller according to claim 6, small roller roundness measuring instrument is characterized in that, the angular range at described " V " clevis angle is between 60 °-90 °.