CN2369210Y

CN2369210Y - Thickness measuring instrument

Info

Publication number: CN2369210Y
Application number: CN 99220842
Authority: CN
Inventors: 宋志龙; 陈付英
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-12
Filing date: 1999-05-12
Publication date: 2000-03-15
Anticipated expiration: 2009-05-12

Abstract

The utility model discloses a thickness measuring instrument, particularly suitable for measuring thickness of an electric wire and a cable. The utility model is composed off a specimen positioning device, a measuring device, and a driving device, wherein, the driving device drives a main measuring shaft of the measuring device to move left and right; the main measuring shaft is connected with a with dial indicator. An additional measuring head is connected with a micro switch and an electromagnet. The relative displacement of the main measuring shaft and a casing tube is controlled by the electromagnet, and the dial indicator is used for counting. The utility model has the advanvtages of reasonable design, high measuring precision, and convenient use.

Description

Thickness measuring instrument

The utility model belongs to a kind of thickness measure instrument, is specially adapted to the wire cable insulating thickness measure.

Existing wire cable insulating thickness measure is to measure according to the measuring projector or the reading microscope of GB/T2951-97 regulation.When cutting test piece with blade, because the sharp keen degree of cutter and people's use skill level is different, the test piece thickness difference that cuts out, particularly the difference of verticality can have a strong impact on the degree of accuracy of measurement result, and often because the toughness of insulation course, the electric wire that specification is big more, this influence is serious more.Simultaneously, because human factor also is difficult to reach equidistant measurement, cause artificial error.

The purpose of this utility model is at above-mentioned the deficiencies in the prior art part, and a kind of Thickness measuring instrument that can realize that diverse location, different angles are accurately measured is provided, and simple to operate, easy to use.

The utility model is achieved through the following technical solutions:

This Thickness measuring instrument is formed the sample locating device by datum plate, sample holder, index dial, toothed disc, tooth bar; Form measuring mechanism by driving stem, dial gauge, main test axle, sleeve, platform, control circuit, drive unit etc., datum plate is vertical mutually with main test axle.Forms with the microswitch that is fixed on sleeve lining and cooperate by being connected additional testing head on the main test axle, control electromagnet L1, L2 and move.Electromagnet L1 is a hollow body, middle and catch clearance fit, and place in the hollow fixture block.Sleeve design is " Ω " shape, and bottom and platform connecting portion are " worker " font, and electromagnet L2 places in the groove that lower cartridge is provided with.Driving stem is fixedlyed connected with main test axle, and driving stem is driven by drive unit, is fixedly clamped by catch and fixture block in the hollow fixture block that places in the sleeve respectively before and after the driving stem.

After adopting technique scheme, because main measuring head and additional testing head are parallel to each other, and it is vertical with datum plate, verticality in the time of can guaranteeing to measure thickness, thereby eliminated because of test piece thickness and the not enough error of bringing of verticality, match by the index line in the scale groove of the scale mark on the index dial and datum plate, can realize equidistant equably measurement, thereby improved the degree of accuracy of measuring.

Be described further below in conjunction with the drawings and specific embodiments.

Accompanying drawing 1 is an one-piece construction synoptic diagram of the present utility model;

Accompanying drawing 2 is A-A schematic cross-sections.

Among Fig. 1, the 1st, tooth bar, the 2nd, toothed disc, the 3rd, datum plate, the 4th, sample, the 5th, index dial, the 6th, sample holder, the 7th, the additional testing head, the 8th, move and close normal open switch, the 9th, main test axle, the 10th, hollow fixture block, the 11st, fixture block, the 12nd, driving shaft, the 13rd, dial gauge, the 14th, sleeve pipe, the 15th, locating piece, the 16th, platform.

Among Fig. 2, the 17th, catch, the 18th, electromagnet L2, the 19th, electromagnet L1.

Embodiment:

Datum plate 3 and platform 16 vertical fixing, tooth bar 1 is fixed on the lateral surface of datum plate 3, and cooperates with toothed disc 2, and sample holder 6 is connected with toothed disc 2, and can move up and down with toothed disc 2.At first materialsing 4 places in the index dial 5, and is fixedly clamped by sample holder 6.

Driving stem 12 and main test axle 9, dial gauge 13, fixture block 11 is fixedlyed connected with sleeve 14, additional testing head 7 places the left surface of sleeve 14, and is linked with placing the microswitch 8 in the sleeve 14, and fixture block 11 is fixedly clamped driving stem 12 with placing the catch in the hollow fixture block 10.Connect fluid pressure drive device, promote driving stem 12 drive sleeves 14 integral body and be moved to the left along platform 16 levels.When additional testing head 7 moves to the hollow part of sample 4, close drive unit, the reading of adjusting dial gauge 13 is zero, stationary positioned piece 15 is with sleeve 14 location that moves to right.

By toothed disc 2, sample 4 is vertically moved down, additional testing head 7 enters in the cavity of sample 4, locking teeth wheel disc 2.Restart fluid pressure drive device, sleeve 14 integral body move to left, when additional testing head 7 contacts with the inwall of sample 4, the moving normal open switch 8 that closes is connected, electromagnetic circuit is communicated with, and places the electromagnet (L2) 19 in the hollow fixture block 10 to produce magnetic force, and catch 17 is sucked in electromagnet (L2) 19 hollow; Simultaneously, place the electromagnet (L1) 18 in sleeve 14 lower recess to produce magnetic force, sleeve 14 is fixing with platform 16.Driving stem 12 continues to drive main test axle 9 and moves to left, and dial gauge 13 begins numeration, when main test axle 9 with after datum plate 3 contact, main test spools 9 is subjected to the reacting force of datum plate 3 to stop to move, and writes down the numerical value of dial gauge.Close drive system, and the turn-on reversal drive unit, driving stem 12 and main test axle 9 move right with after fixture block 11 contact, and effect drive sleeve 14 integral right by driving stem 12 and fixture block 11 move on to locating piece 15 places.In this process, additional testing head 7 breaks away from the effect with sample 4 inwalls, and microswitch 8 is opened, and electromagnet 19,18 is ineffective, and catch 17 returns to the position that stops driving stem 12 again, and sleeve 14 also breaks away from and the fixing of platform 16, and enters the measurement initial state.

Rotate the angle of sample 4,, repeat above-mentioned measuring process, can measure sample 4 at each numerical value of same cross section by index dial 5 record different angles values.Adjust toothed disc, change the height of sample 4, use the same method and measure the numerical value of sample 4 at different cross section.

Thickness with all right sheet material measurement of this Thickness measuring instrument, rounded material and other multiple materials.

Claims

1, a kind of Thickness measuring instrument is formed the sample locating device by datum plate, sample holder, index dial, toothed disc, tooth bar; By driving stem, dial gauge, main test axle, sleeve, platform, control circuit, drive units etc. are formed measuring mechanism, it is characterized in that: form with the microswitch that is fixed on sleeve lining and cooperate by being connected additional testing head on the main test axle, control electromagnet L1, the L2 action, electromagnet L1 is a hollow body, centre and catch clearance fit, and place in the hollow fixture block, be fixedly clamped by catch and fixture block in the hollow fixture block that places in the sleeve respectively before and after the driving stem, sleeve design is " Ω " shape, bottom and subbase connecting portion are " worker " font, and electromagnet L2 places in the groove that lower cartridge is provided with.

2, according to the Thickness measuring instrument of claim 1, it is characterized in that: driving stem is fixedlyed connected with main test axle, and driving stem is driven by fluid pressure drive device.

3, according to the Thickness measuring instrument of claim 1, it is characterized in that: microswitch is the moving normal open switch that closes.