CN2154456Y - Hand-held diameter measuring instrument - Google Patents

Abstract

A handheld diameter measuring instrument belongs to a dynamic tracking detection instrument for the geometric quantities such as the outer diameter of a wire rod. The wire detecting device is characterized in that a detected wire is introduced between two rollers, one roller is connected with a measuring meter, and when the detected wire passes through the rollers, if the wire diameter is changed, the displacement of the rollers can be visually reflected on the measuring meter so as to achieve the aim of dynamic tracking detection. In order to prevent the detected line from separating from the roller during detection, a swing differential mechanism is provided. The instrument has the outstanding advantages that the line diameter is detected by the rollers, the detection precision can be obviously improved, the operation is very simple and convenient, the numerical value display is visual, and the instrument is particularly suitable for dynamic tracking detection.

Description

Hand calliper instrument

The hand-held caliper that the utility model relates to belongs to dynamic the following of geometry such as the external diameter of wire rod and combines measuring instrument.

At present, to the online detection of external diameter of wire rods such as enameled wire, copper cash, iron wire, plastic cord, remain and adopt the hand-held milscale of people, the motion limit alignment edge of following line is surveyed the method for reading, owing to there is not suitable measurement instrument, there is following shortcoming in existing detection: 1 measuring accuracy is difficult to guarantee; 2 easy damaged wire enamel coverings; 3 easily-folding lines, the thinner line of special measurement fractures easily, especially is not easy to online with combining detection; 4 couples of testing staff's technical merit is had relatively high expectations.

The purpose of this utility model is for overcoming existing above-mentioned deficiency with miking, provide a kind of practicality accurate, being specially adapted to the novel hand-held caliper of on-line measurement.

Realize that the concrete scheme of above-mentioned purpose is described below in conjunction with the accompanying drawings: this caliper is by meter 1, handle 3, table body 9 and idler wheel mechanism, help guiding mechanism, tilting mechanism, differential displacement mechanism forms, be fixed with table folder 2 and handle 3 on the table body 9, meter is contained on the table folder 2, help guiding mechanism to form by last support guide plate 7 and following support guide plate 10 and fork 6 and returning device 4, following support guide plate 10 is fixed on the bottom of table body 9, its top is last support guide plate 7, it is by balance staff 5, bearing pin and fork 6 are contained on the table body 9, returning device 4 is housed on the fork 6, help the junction of guide plate to be provided with metallic channel up and down, idler wheel mechanism is by being contained in the moving plate of helping on the guide plate 78 and being contained in down that helping leads decides plate 13 on 10, with and go up the corresponding driving wheel of installing 11, fixed wheel 12 is formed, and moving plate 8 links to each other with meter 1 by connecting link.

The set differential displacement mechanism of this device is: can be differential up and down between moving plate 8 and the last support guide plate 7, and spacing by the balance staff 5 that is contained on last support guide plate 7.

The outstanding feature of this programme is to adopt roller detection line footpath, can significantly improve accuracy of detection, and experiment shows that precision can reach ± 0.003mm.Operate very simple and convenient, the numerical value intuitive display.Being specially adapted to dynamic tracking detects.It can avoid bumping brokenly the enamel-cover layer with what the milscale detection line often occurred fully, fractures by shortcomings such as surveys line, and this apparatus structure is simple in addition, and cost is low.

Further narrate the structural representation that this programme and embodiment: Fig. 1 is hand-held caliper below in conjunction with accompanying drawing, Fig. 2 is the left view of Fig. 1,1 is meter among the figure, can adopt clock gauge commonly used, it is contained on the table folder 2, table folder 2 is fixed on the table body 9,3 is handle, be contained on the table body, 7 is last support guide plate, 10 are following support guide plate, and following support guide plate is fixed on the bottom of table body, on help guide plate to be contained on the table body by fork 6, returning device 4 is housed on the fork, can adopt spring, the support guide plate is combined along moving on the table body with following support guide plate disengaging, unclamp fork and support guide plate return is combined with following support guide plate by returning device when pressing fork.8 are moving plate, and 13 for deciding plate, and driving wheel 11 and fixed wheel 12 are contained in moving plate respectively and decide on the plate.Helping the guide plate joint to be provided with metallic channel up and down, 5 is balance staff, connects fork and last support guide plate.Can be differential up and down between moving plate and the last support guide plate, and spacing by balance staff.

The course of work of this device is: the handle 3 of hand-held caliper, when pressing fork 6, because last support guide plate 7 links to each other with fork 6 by balance staff 5, move so make to help on the guide plate 7, move on to suitable distance, balance staff 5 contacts with moving plate 8 and because driving wheel 11 is contained on the moving plate, continues to press fork 6 this moment, on help guide plate, moving plate, driving wheel three just to move on synchronously.When the gap between driving wheel and the fixed wheel during greater than the line of detected wire rod footpath, detected wire rod is introduced between two rollers, unclamping big mother then refers to, above-mentioned three moves down under the effect of returning device 4 power synchronously, when the detection wire rod contacts with fixed wheel with driving wheel, moving plate stops to move down, continue to move down to guide plate and go up to help, get back to initial position, detected wire rod is enclosed between two rollers in the metallic channel, has guaranteed that so promptly detected wire rod does not break away from two rollers and straight passing through when walking about.During wire rod process roller, if line footpath geometric sense changes, driving wheel produces displacement thereupon, by moving plate and connecting link tested survey line directly is worth to be reflected on the meter.When detect finishing, press fork 6 and will go up successively and help guide plate, moving plate to lift together with driving wheel, remove hand-held caliper, all testing processes finish.

Claims (2)

1, a kind of hand-held caliper, it is characterized in that it is by meter (1), handle (3), table body (9) and idler wheel mechanism, help guiding mechanism and tilting mechanism, differential displacement mechanism forms, be fixed with table folder (2) and handle (3) on the table body (9), meter (1) is contained on the table folder (2), help guiding mechanism to form to plate (10) and fork (6) and returning device (4) by last support guide plate (7) and following support road, following support guide plate (10) is fixed on the bottom of table body (9), its top is a last support guide plate (7), it is contained on the table body (9) by bearing pin and fork (6), returning device (4) is housed on the fork (6), help the junction of guide plate to be provided with metallic channel up and down, idler wheel mechanism be by be contained in help the road to the moving plate (8) on the plate (7) and be contained in down on the support guide plate (10) decide plate (13) with and go up the driving wheel (11) of correspondence installation, fixed wheel (12) is formed, and moving plate (8) joins by connecting rod and meter.

2, a kind of hand-held caliper according to claim 1 is characterized in that said differential displacement mechanism is: can be differential up and down between moving plate (8) and the last support guide plate (7), and spacing by the balance staff (5) that is contained on the support guide plate (7).

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