CN2178347Y

CN2178347Y - Wide measuring head inside dial gauge

Info

Publication number: CN2178347Y
Application number: CN 93248186
Authority: CN
Inventors: 胡朝根
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-31
Filing date: 1993-12-31
Publication date: 1994-09-28
Anticipated expiration: 2003-12-31

Abstract

The utility model provides a wide measuring head inside dial gauge, comprising a movable gauge head (1), a fixing gauge head (11) and a locating measuring bridge (2). The utility model is characterized in that the movable gauge head (1), the fixing gauge head (11) and the head part of the locating measuring bridge (2) constitute the shape of wheel rim, whose contact face with the measured work piece is a tire-shaped curved surface whose length is longer than the screw pitch of the measured internal wire coil or the width of the rifle hatching. The utility model can not only measure smooth cylindrical bore, but also detect internal wire coil land, such as the rifle in the gun and cannon bores. The wide measuring head inside dial gauge has the advantages of simple structure, small volume, light weight and convenient operation and carrying.

Description

Wide measuring head inside dial gauge

It is the metering outfit of feature to adopt mechanism's method that the utility model relates to a kind of, specifically relates to a kind of dial bore gage.

Existing dial bore gage, no matter be general T type structure, it still is the additional location survey bridge mechanism that has, its gauge head all is a needle-like, head is provided with small ball, therefore it can only be used to detect the internal diameter of smooth cylindrical hole, and the wear extent of the helix of the various pipe fitting bore areas of energy measurement (as the rifle in bore, the bore) not.Next is that the fixedly gauge head of existing dial bore gage and the body of grafting activity gauge head join together, so its range is very little, can't detect the caliber of all size to dial bore gage with one.Domestic in early days from a kind of star-like caliper that can measure rifle wear extent in rifle, the bore of Soviet Union's import, because its too heavy (about 50Kg), measuring accuracy is subjected to the manpower factor affecting bigger, so seldom use.

In view of the above-mentioned deficiency of existing in prior technology, the purpose of this utility model provides a kind of wide gauge head dial bore gage, it can not only measure the wear extent of the helix of pipe fitting bore area, and have simple in structure, volume is little, in light weight, operate and carry all advantage very easily.

Another purpose of the present utility model provides a kind of wide gauge head dial bore gage that can range extension.

The utility model realizes that the technical solution of above-mentioned purpose is:

A kind of wide gauge head dial bore gage, comprise movable gauge head, fixedly bridge is surveyed in gauge head and location, it is characterized in that described movable gauge head, fixedly gauge head and the location head of surveying bridge is the wheel rim shape, with the surface of contact of measured workpiece be the wheel the form of the foetus curved surface of a segment length greater than tested inner vortex pitch or rifle negative line width.Gauge head just can not fall in the negative line groove when measuring like this, utilizes the three-point circle principle can measure the internal diameter of the pipe fitting with negative line and land exactly.

The utility model realizes that the feature of above-mentioned another purpose technical solution is that fixedly gauge head is plugged in the center pit of body and by nut lock, can change the fixedly gauge head of different length, like this to obtain different ranges.

The utility model is compared with existing dial bore gage has following advantage: (1) both can measure smooth cylindrical hole, can measure the pipe fitting endoporus with yin, yang line again; (2) can utilize transposing fixedly gauge head come range extension, the user needs only the fixedly gauge head that adapted one group length does not as required wait, dial bore gage that needn't the adapted all size.

The utility model compare with the star-like caliper of import have simple in structure, volume is little, in light weight, carry and the outstanding advantage easy to operate, that measuring accuracy is high.

Below in conjunction with accompanying drawing and a preferred embodiment the utility model is explained in further detail.

Fig. 1 is the structural representation of a preferred embodiment of the present utility model;

Fig. 2 is that the A of Fig. 1 is to view;

Fig. 3 detects the user mode figure of rifle wear extent in the big gun hall for using wide gauge head dial bore gage illustrated in figures 1 and 2.

Present embodiment is for detecting a kind of wide gauge head dial bore gage of rifle wear extent in the big gun hall.

Referring to Fig. 1 and Fig. 2, movable gauge head 1, location survey bridge 2 and fixedly the head of gauge head 11 all be the wheel rim shape, with the surface of contact of measured workpiece be the wheel the form of the foetus curved surface of a segment length greater than tested rifle negative line well width.

Referring to Fig. 1 and Fig. 2, fixedly gauge head 11 is plugged in the center pit of body 12 and surveys 1 coaxial with activity; Fixedly be provided with key 14 between gauge head 11 and the body 12 to prevent that when the fastening nut 10 fixedly gauge head 11 produces relative rotation with body 12 and weares and teares; Fixedly be provided with pad 13 between the end face of the set location shaft shoulder and body 12 on the gauge head 11, the thickness by changing pad 13 and the quantity of increase and decrease pad 13 are to realize the fine setting of measurement range; Fixedly gauge head 11 is fixed on the body 12 by nut 10.

Implementation method beyond the utility model is above-mentioned can be utilized known technology and the enforcement that sees figures.1.and.2.

Referring to Fig. 3 and in conjunction with Fig. 1, when utilizing wide gauge head dial bore gage described in the utility model to detect the wear extent of rifle in the big gun hall, the operator holds handle 8 with a hand, put into bore 15 for one that will be provided with location survey bridge 2 earlier, apply a point pressure with the another hand to one that locatees the survey bridge then, overcome the elastic force of retainer spring 3, fixedly gauge head 11 is also put into bore 15 again, and makes measuring staff 9 substantially parallel with bore 15.At this moment cancel institute's applied pressure, survey in the location under the effect of bridge 2 and retainer spring 3, movable gauge head 1 and fixedly the axial line of gauge head 11 move on to the diameter position of bore 15 automatically.At this moment, the displacement of movable gauge head 1 then reaches dial gauge 6 by lever 4, drive link 5, shows on dial gauge 6.Referring to Fig. 1, the utility model on measuring staff 9, be provided with scale mark and vernier 7 with show the degree of depth of the position of being detected in big gun hall 15.

Claims

1, a kind of wide gauge head dial bore gage, comprise movable gauge head (1), fixedly bridge (2) is surveyed in gauge head (11) and location, it is characterized in that described movable gauge head (1), fixedly gauge head (11) and the location head of surveying bridge (2) is the wheel rim shape, with the surface of contact of measured workpiece be the wheel the form of the foetus curved surface of a segment length greater than tested inner vortex pitch or rifle negative line width.

2, a kind of wide gauge head dial bore gage according to claim 1 is characterized in that fixing gauge head (11) is plugged in the center pit of body (12) and by nut (10) to lock.

3, a kind of wide gauge head dial bore gage according to claim 2 is characterized in that being provided with between the end face of the axial location shaft shoulder of fixing gauge head (11) and body (12) and regulates pad (13).