CN206683586U - A kind of length-measuring appliance - Google Patents

Abstract

The utility model provides a kind of length-measuring appliance, the characteristics of length-measuring appliance, is, including optical grid line displacement sensor, the one end of the grating reading head (2) of the optical grid line displacement sensor away from scale grating (1) is fixedly connected with pressure head (5), and the length-measuring appliance also includes the controller electrically connected with the grating reading head (2).Testing staff can be more convenient using length-measuring appliance provided by the utility model, more accurately semiaxis is detected.

Description

A kind of length-measuring appliance

Technical field

Length measurement technique field is the utility model is related to, more particularly to a kind of length-measuring appliance.

Background technology

At the station of semiaxis press mounting bolt, due to be related to various semiaxis assemble, and the semiaxis of different model it Between difference in length very little, so often there is the problem of semiaxis model confusion, semiaxis also occurs that length is not up to standard and asked sometimes Topic, can not only be differentiated with direct feel, in order to avoid influenceing the quality of automobile product, it is necessary to before half axle bolt is pressed Carry out half shaft length measurement.

At present, generally use approach switch sensor detects the length of semiaxis, i.e., is connect first with standard component to fix The position of nearly switch sensor, then half axial approach switch sensor is shifted near, if it is indicated that lamp is bright, then show that semiaxis meets It is required that.This detection mode need to select corresponding approach switch sensor in advance for different vehicles, cause it is troublesome in poeration, and And the accuracy of detection of approach switch sensor is relatively low, faulty products are extremely easily produced.

Therefore, how to be more convenient, more accurately semiaxis is detected, it is urgently to be resolved hurrily to become those skilled in the art Technical problem.

Utility model content

In view of this, the utility model provides a kind of length-measuring appliance, can be more square using the length-measuring appliance Just, more accurately semiaxis is detected.

In order to achieve the above object, the utility model provides following technical scheme：

A kind of length-measuring appliance, including optical grid line displacement sensor, the grating reading of the optical grid line displacement sensor The one end of head away from scale grating is fixedly connected with pressure head, and the length-measuring appliance also includes being electrically connected with the grating reading head The controller connect.

Preferably, in above-mentioned length-measuring appliance, the controller is programmable controller.

Preferably, in above-mentioned length-measuring appliance, in addition to put down with the scale grating of the optical grid line displacement sensor The cylinder of row arrangement, is socketed with sliding block outside the cylinder, the sliding block is fixedly connected with the pressure head.

Preferably, in above-mentioned length-measuring appliance, the cylinder is Rodless cylinder.

Preferably, in above-mentioned length-measuring appliance, the scale grating of the pressure head and the optical grid line displacement sensor Vertically.

Preferably, in above-mentioned length-measuring appliance, the controller is provided with alarm unit.

Preferably, in above-mentioned length-measuring appliance, the alarm unit is indicator lamp and/or sounding horn.

It can be seen from above-mentioned technical proposal, in length-measuring appliance provided by the utility model, optical grid line displacement is provided with Sensor, pressure head is fixedly connected with the grating reading head of optical grid line displacement sensor, the operation principle of the length-measuring appliance After controller setting pressure head to the distance of reference position, one end of measured piece to be contacted with reference position, then grating reading Scale grating of the head along optical grid line displacement sensor slides until another end in contact of pressure head and measured piece, grating reading head movement During can send the respective pulses number of respective distance, the respective pulses number is received by a controller, and controller passes through internal arithmetic Respective pulses number is converted into corresponding distance, pressure head can calculate to the distance of reference position during then in conjunction with initial position Go out the length of measured piece.

Because length-measuring appliance provided by the utility model employs optical grid line displacement sensor, there is very high measurement Precision, moreover, grating reading head slides on scale grating, the detection to the semiaxis of different length can be competent at, it is not necessary to half Spindle-type number difference and change length-measuring appliance, so, can be more convenient using the length-measuring appliance, more accurately half-and-half Axle is detected.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also Other accompanying drawings can be obtained according to the accompanying drawing of offer.

Fig. 1 is a kind of schematic diagram for length-measuring appliance that the utility model embodiment provides.

In figure mark for：

1st, scale grating；2nd, grating reading head；3rd, Rodless cylinder；4th, sliding block；5th, pressure head；6th, semiaxis.

Embodiment

In order to make it easy to understand, the utility model will be further described below in conjunction with the accompanying drawings.

Referring to Fig. 1, a kind of schematic diagram of the length-measuring appliance provided for the utility model embodiment.

A kind of length-measuring appliance that the utility model embodiment provides includes optical grid line displacement sensor, optical grid line displacement The one end of the grating reading head 2 of sensor away from scale grating 1 is fixedly connected with pressure head 5, and length-measuring appliance also includes and light The controller (not shown) that grid reading head 2 electrically connects.

As shown in figure 1, the operation principle that length-measuring appliance provided by the utility model is detected to semiaxis is as follows：

Semiaxis 6 is placed on reference position, makes semiaxis 6 parallel with scale grating 1, grating reading head 2 is by initial position To the movement of semiaxis 6 until pressure head 5 contacts with semiaxis 6, the respective pulses of respective distance can be sent in the moving process of grating reading head 2 Number, the respective pulses number are received by a controller, and respective pulses number is converted into corresponding distance by controller by internal arithmetic, so The length of semiaxis 6 can be calculated to the distance of reference position for pressure head 5 when combining initial position afterwards.

Because length-measuring appliance provided by the utility model employs optical grid line displacement sensor, there is very high measurement Precision, moreover, grating reading head 2 slides on scale grating 1, the detection to the semiaxis 6 of different length can be competent at, it is not necessary to The model of semiaxis 6 difference and change length-measuring appliance, so, can be more convenient, more accurately using the length-measuring appliance Semiaxis 6 is detected.

In specific practical application, controller can use programmable controller.

In order to control grating reading head 2 to be slided along scale grating 1, in the present embodiment, in addition to 1 parallel cloth of scale grating The Rodless cylinder 3 put, sliding block 4 is socketed with outside Rodless cylinder 3, sliding block 4 is fixedly connected with pressure head 5.In other embodiments, may be used To replace Rodless cylinder 3 with common cylinder.

For the ease of check and correction measuring basis position, in the present embodiment, pressure head 5 is vertical with scale grating 1.

Controller can also set alarm unit in addition to directly displaying testing result, for example, alarm unit can be Indicator lamp and/or sounding horn.

The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality Type.A variety of modifications to embodiment will be apparent for those skilled in the art, as defined herein General Principle can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Therefore, originally Utility model is not intended to be limited to embodiment illustrated herein, and is to fit to and principles disclosed herein and features of novelty Consistent most wide scope.

Claims (7)

1. A kind of 1. length-measuring appliance, it is characterised in that including optical grid line displacement sensor, the optical grid line displacement sensor The one end of grating reading head (2) away from scale grating (1) is fixedly connected with pressure head (5), the length-measuring appliance also include with The controller of grating reading head (2) electrical connection.
2. 2. length-measuring appliance according to claim 1, it is characterised in that the controller is programmable controller.
3. 3. length-measuring appliance according to claim 1, it is characterised in that also include and the optical grid line displacement sensor Scale grating (1) parallel arrangement cylinder, sliding block (4), the sliding block (4) and the pressure head are socketed with outside the cylinder (5) it is fixedly connected.
4. 4. length-measuring appliance according to claim 3, it is characterised in that the cylinder is Rodless cylinder (3).
5. 5. length-measuring appliance according to claim 1, it is characterised in that the pressure head (5) and the optical grid line displacement The scale grating (1) of sensor is vertical.
6. 6. length-measuring appliance according to claim 1, it is characterised in that the controller is provided with alarm unit.
7. 7. length-measuring appliance according to claim 6, it is characterised in that the alarm unit is indicator lamp and/or hair Horn.