Wide-range digital display dial gauge mechanical component

Abstract

The utility model provides a wide-range digital display dial gauge mechanical component, which comprises a gauge shell, a dustproof cap, a lower sleeve and a tension spring, the gauge shell is provided with a moving gate mounting groove, four corners of the moving gate mounting groove are provided with positioning holes, and a moving gate sensor is provided with assembling through holes corresponding to the positioning holes. And the guide screw sequentially passes through the assembly through hole of the moving gate sensor and the pressure spring to be in threaded fit with the positioning hole. The clearance adjustment and the parallelism adjustment of the movable gate sensor and the fixed gate sensor can be realized by adjusting the thread fit lengths of the four guide screws and the positioning holes. According to the wide-range digital display dial gauge mechanical component provided by the utility model, the gap and the parallelism of the movable gate and the fixed gate can be adjusted, and the measurement error of the wide-range dial gauge is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of digital display indicator, in particular to a mechanical component of a large-range digital display indicator. Background Art

[0002] Digital indicator is an important measuring instrument in the development of machinery industry. Capacitive grating digital indicator usually includes moving grating sensor, fixed grating sensor, display module and mechanical components. The mechanical component of digital indicator is an assembly structure of moving grating sensor and fixed grating sensor, which makes the two produce linear displacement motion to complete the measurement.

[0003] The mechanical components of a digital indicator usually include a case, a measuring rod, upper and lower sleeves, and a tension spring. The moving grid sensor and display module are installed on the case. The fixed grid is installed on the measuring rod through the fixed grid base and moves linearly with the measuring rod, thereby realizing the relative movement of the moving grid and the fixed grid to obtain measurement data. The digital indicator is a high-precision measuring instrument. High-precision measurement has very high requirements for the gap and parallelism between the moving grid and the fixed grid. If the gap and parallelism do not meet the requirements, large measurement errors will occur.

[0004] The traditional method is to ensure the gap and parallelism of the moving grid and fixed grid sensors through mechanical processing, which is not adjustable and cannot overcome the influence of processing errors and installation errors on measurement accuracy. In addition, for large-scale indicating meters, the signals of the moving grid sensor and the fixed grid sensor are microelectronic signals, and the gap requirements for the moving grid sensor and the fixed grid sensor are very high. A large gap will cause the number of jumps and large measurement errors; a small gap will cause the measuring rod to jam. The traditional mechanical processing method cannot meet the gap requirements of large-scale indicating meters.

[0005] Based on the above problems, it is necessary to set up a mechanical component of a large-scale digital display indicator that can adjust the gap and parallelism between the moving grid and the fixed grid, which is of great significance to the large-scale digital display indicator. Utility Model Content

[0006] The utility model provides a mechanical component of a large-range digital display indicator, which can adjust the gap and parallelism between a moving grid and a fixed grid and reduce the measurement error of the large-range indicator.

[0007] In order to achieve the above technical objectives and the above technical effects, the utility model solves the above problems through the following technical solutions:

[0008] A mechanical component of a large-range digital display indicator comprises a case with a longitudinal through hole, a dust cap and a lower sleeve respectively connected to the two ends of the through hole, a measuring rod slides along the longitudinal through hole of the case and is reset downward by a tension spring, a moving grid installation groove is provided on the case, positioning holes are provided at the four corners of the moving grid installation groove, a moving grid sensor is provided with an assembly through hole corresponding to the positioning hole, a guide screw passes through the assembly through hole of the moving grid sensor in sequence, and a compression spring is threadedly engaged with the positioning hole; a fixed grid seat is fixedly connected to the measuring rod close to the moving grid sensor, and the fixed grid sensor is installed on the fixed grid seat and arranged opposite to the moving grid sensor.

[0009] In this solution, the moving grid sensor is installed in the moving grid installation slot of the case through guide screws and compression springs. The two ends of the compression spring act on the moving grid sensor and the positioning hole respectively, so that the moving grid sensor is pressed against the screw head of the guide screw. By adjusting the thread matching length of the four guide screws and the positioning hole, the gap adjustment and parallelism adjustment of the moving grid sensor and the fixed grid sensor can be achieved.

[0010] Furthermore, a guide ring is fixed in the longitudinal through hole of the case, and the guide ring is a horizontally arranged semicircular structure, which is provided with an open circular hole for the measuring rod to pass through; the opening of the open circular hole is located on the straight side of the semicircle, and horizontal threaded through holes are symmetrically provided on both sides of the opening, and the adjusting screw passes through the threaded through hole and acts on the back of the fixed grid seat. In the scheme, the measuring rod slides longitudinally along the open circular hole, and the adjusting screw abuts against the back of the fixed grid seat, and the sliding rod can be guided to reduce the rotational shaking of the measuring rod during the sliding process; the matching length of the adjusting screws on both sides and the threaded through holes can be adjusted to adjust the parallelism of the fixed grid seat and the case.

[0011] Furthermore, it also includes an L-shaped tension spring hook, the upper part of which is fixed to the inner wall of the longitudinal through hole of the watch case by screws, and the lower part extends into the lower sleeve; one end of the tension spring is hung on the hook at the bottom of the tension spring hook, and the other end is hung on the upper end of the measuring rod by screws.

[0012] Furthermore, a limit hole is provided in the middle section of the measuring rod, the limit rod is installed in the limit hole, and the limit rod cooperates with the lower sleeve to limit the maximum sliding displacement of the measuring rod.

[0013] Furthermore, the fixed grid seat is fixed to the measuring rod by a plurality of screws arranged longitudinally.

[0014] The advantages and effects of the utility model are:

[0015] 1. In the mechanical component of the large-range digital display indicator described in the utility model, the moving grid sensor is installed in the moving grid installation groove of the meter case through guide screws and compression springs. By adjusting the thread matching length of the four guide screws and the positioning holes, the gap adjustment and parallelism adjustment between the moving grid sensor and the fixed grid sensor can be achieved, thus overcoming the problem that traditional mechanical processing cannot meet the gap requirements of large-range indicators.

[0016] 2. The utility model is provided with two left and right adjusting screws acting on the back of the fixed grid seat on the guide ring. The rotating shaking amount of the measuring rod during the sliding process can be reduced by adjusting the screws, and the parallelism between the fixed grid seat and the case can be adjusted.

[0017] 3. The utility model is provided with an L-shaped tension spring hook whose lower part extends into the lower sleeve. This structure does not require processing the hook in the lower sleeve, which can simplify the processing technology and improve the installation efficiency of the tension spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 An explosion diagram of the utility model;

[0019] Figure 2 It is a front structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the back structure of the utility model.

[0021] Figure number identification: 1. Case, 1-1. Moving grid installation groove, 1-2. Positioning hole, 2. Dust cap, 3. Lower sleeve, 4. Measuring rod, 5. Tension spring, 6. Moving grid sensor, 7. Guide screw, 8. Compression spring, 9. Fixed grid seat, 10. Fixed grid sensor, 11. Guide ring, 11-1. Open round hole, 12. Adjusting screw, 13. Tension spring hook, 14. Limit rod, 15. Bushing. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with embodiments, but the present invention is not limited to these embodiments.

[0023] The mechanical component of a large-range digital display indicator described in this embodiment is as shown in the attached Figure 1 , 2 As shown in Figures 1 and 3, the main body includes a case 1, a dust cap 2, a lower sleeve 3, a measuring rod 4, a tension spring 5, a guide screw 7, a compression spring 8, a fixed grid seat 9, a guide ring 11, an adjustment screw 12, a tension spring hook 13 and a limit rod 14. A longitudinal through hole is provided in the middle of the case 1, and the upper and lower ends of the longitudinal through hole are respectively connected to the dust cap 2 and the lower sleeve 3, and the bottom of the lower sleeve 3 is connected to the shaft sleeve 15. The measuring rod 4 slides along the longitudinal channel formed by the dust cap 2, the case 1, the lower sleeve 3 and the shaft sleeve 15, and the bottom end of the rod body extends from the shaft sleeve 15.

[0024] As attached Figure 1As shown, a rectangular moving gate installation slot 1-1 is provided at the front end of the case 1, and positioning holes 1-2 are provided at the four corners of the moving gate installation slot 1-1. The moving gate sensor 6 is provided with four assembly through holes corresponding to the four positioning holes 1-2 in the moving gate installation slot 1-1. The guide screw 7 passes through the assembly through hole of the moving gate sensor 6 in sequence, and the compression spring 8 is threadedly matched with the positioning hole 1-2. The two ends of the compression spring 8 act on the moving gate sensor 6 and the positioning hole 1-2 respectively, so that the moving gate sensor 6 can be pressed against the screw head of the guide screw 7, and the moving gate sensor 6 moves with the guide screw 7. Therefore, by adjusting the thread matching length of the four guide screws 7 and the positioning hole 1-2, the clearance and parallelism between the moving gate sensor 6 and the fixed gate sensor 10 can be adjusted.

[0025] The fixed grid seat 9 is fixedly connected to the side of the measuring rod 4 near the moving grid sensor 6 by a plurality of screws arranged longitudinally, and the fixed grid sensor 10 is installed on the fixed grid seat 8 and arranged opposite to the moving grid sensor 6. Figure 1 , 2 As shown, a guide ring 11 is fixed in the longitudinal through hole of the watch case 1, and the guide ring 11 is fixed to the longitudinal through hole near the dust cap 2 by structural glue. The guide ring 11 is a horizontally arranged semicircular structure, and is provided with an open circular hole 11-1 for the measuring rod 4 to pass longitudinally. The opening of the open circular hole 11-1 is located on the straight side of the semicircle, and two horizontal threaded through holes are symmetrically arranged on both sides of the opening. The adjusting screw 12 cooperates with the threaded through hole and abuts against the back of the fixed grid seat 9 to limit the rotation of the fixed grid seat 9.

[0026] The tension spring hook 13 adopts an L-shaped structure, the upper part of which is fixed to the inner wall of the longitudinal through hole of the watch case 1 by screws, and the lower part extends into the lower sleeve 3. One end of the tension spring 5 is hung on the hook at the bottom of the tension spring hook 13, and the other end is hung on the upper end of the measuring rod 4 by screws. A limit hole is provided in the middle section of the measuring rod 4, and the limit rod 14 is inserted into the limit hole. When the measuring rod 5 moves downward, the limit rod 15 and the lower sleeve 3 form a limit. After the measurement is completed, the tension spring 5 drives the measuring rod 4 to reset downward to the limit position formed by the limit rod 15 and the lower sleeve 3.

[0027] By adopting this embodiment, the gap adjustment and parallelism adjustment of the moving grid sensor 6 and the fixed grid sensor 10 can be achieved by adjusting the thread matching length of the four guide screws 7 and the positioning holes 1-2. The rotational shake and parallelism of the measuring rod 4 can be adjusted by changing the thread matching length of the adjusting screw 12 and the guide ring 11. The large-range digital display indicator mechanical component can better ensure the gap and parallelism of the moving and fixed grids and improve the measurement accuracy.

[0028] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments without departing from the principle and spirit of the present invention still fall within the scope of protection of the present invention.

Claims

1. A mechanical component of a large-range digital display indicator, comprising a case (1) having a longitudinal through hole, a dust cap (2) and a lower sleeve (3) respectively connected to both ends of the through hole, a measuring rod (4) sliding along the longitudinal through hole of the case (1) and resetting downward by a tension spring (5), characterized in that: The housing (1) is provided with a moving gate installation groove (1-1), positioning holes (1-2) are arranged at four corners of the moving gate installation groove (1-1), the moving gate sensor (6) is provided with an assembly through hole corresponding to the positioning hole (1-2), and the guide screw (7) passes through the assembly through hole of the moving gate sensor (6), and the compression spring (8) is threadedly matched with the positioning hole (1-2) in sequence; A fixed grid seat (9) is fixedly connected to one side of the measuring rod (4) close to the moving grid sensor (6), and the fixed grid sensor (10) is mounted on the fixed grid seat (9) and arranged opposite to the moving grid sensor (6).

2. A mechanical component of a large-range digital display indicator according to claim 1, characterized in that: A guide ring (11) is fixedly connected in the longitudinal through hole of the watch case (1); the guide ring (11) is a horizontally arranged semicircular structure and is provided with an open circular hole (11-1) through which the measuring rod (4) can pass; The opening of the circular opening hole (11-1) is located on the straight side of the semicircle, and horizontal threaded through holes are symmetrically provided on both sides of the opening. The adjusting screw (12) passes through the threaded through holes and acts on the back of the fixed grid seat (9).

3. A mechanical component of a large-range digital display indicator according to claim 1 or 2, characterized in that: It also includes an L-shaped tension spring hook (13), the upper part of which is fixedly connected to the inner wall of the longitudinal through hole of the watch case (1) by screws, and the lower part extends into the lower sleeve (3); one end of the tension spring (5) is hung on the hook at the bottom of the tension spring hook (13), and the other end is hung on the upper end of the measuring rod (4) by screws.

4. The mechanical component of a large-range digital display indicator according to claim 1, characterized in that: A limiting hole is provided in the middle section of the measuring rod (4), a limiting rod (14) is installed in the limiting hole, and the limiting rod (14) cooperates with the lower sleeve (3) to limit the maximum downward displacement of the measuring rod (4).

5. The mechanical component of a large-range digital display indicator according to claim 1, characterized in that: The fixed grid seat (9) is fixedly connected to the measuring rod (4) by means of a plurality of screws arranged longitudinally.

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