Digital display dial gauge for precise measurement

Abstract

The utility model discloses a digital display dial gauge for precise measurement, which comprises a shell, a bearing seat fixing device is arranged in the shell, an upper shaft sleeve device is arranged on one side of the shell, and a lower shaft sleeve is arranged on one side of the bearing seat fixing device. According to the device, the lower bearing sleeve rod is pressed into the shell in a riveting mode and then pressed into the shell, the upper bearing sleeve is pressed into the shell in a riveting mode, the fixed grid base is fixed to the measuring rod through the second screw, and then the fixed grid bar is bonded to the fixed grid base through glue. Screws I penetrate through the bearing holes to be mounted on the lower bearing seat, the side surface bearing seat and the upper bearing adjusting seat (two pieces in bilateral symmetry); then the installed side face bearing seat is installed on the lower bearing seat through the first screw (the side face bearing seat is not locked, and fine adjustment is needed in the back), the installed measuring rod penetrates into the shell from the upper bearing sleeve, then the spring is hung to the position above the measuring rod through the first screw, the shell is placed downwards, and by means of the structure, the effect that adjustment can be conducted more accurately is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical instrument measurement, and more specifically to a digital display indicator for precise measurement. Background Art

[0002] Mechanical instrument measurement is a traditional measurement technology that relies on the interaction of mechanical parts to measure and display physical quantities such as length, angle, pressure, etc. Mechanical instruments usually include some basic components, such as pointers, dials, gears, springs, etc., which realize measurement functions through mechanical connections and interactions.

[0003] After searching, the existing patent (Announcement No.: CN207936905U) discloses a digital display indicator, including a housing, a fixed grid transmission mechanism and a movable grid cover mechanism, the fixed grid transmission mechanism includes a linear slide rail with a fixed grid, a measuring rod with a measuring head, and a tension spring, the linear slide rail includes a mutually matched slide rail base, a long strip slider and a ball retainer located therebetween, a plurality of balls are arranged on both sides of the ball retainer, the inner cavity of the housing is provided with a fixed grid mounting base plate, the slide rail base is fixedly mounted on the fixed grid mounting base plate, the measuring rod passes through a circular through hole arranged in the middle of the slider and is parallel to the slider, the fixed grid is arranged on the upper surface of the slider, one end of the tension spring is connected to the upper end of the measuring rod, the other end of the tension spring is connected to the slide rail base, the top of the measuring rod is provided with an upper positioning block, the upper and lower through holes of the housing are provided with upper and lower positioning sleeves, and the measuring rod and the slider can slide together in the upper and lower positioning sleeves. The digital display indicator of the utility model has great measurement accuracy.

[0004] However, during the use of the above-mentioned device, after the upper and lower sleeves are riveted into the housing, mechanical processing is used to ensure the coaxiality and consistency of the holes, but this processing method may be difficult to ensure extremely high accuracy, resulting in a sliding gap in the measuring rod. In order to ensure good sliding performance, a certain gap needs to be left between the guide rod and the guide block, but this may also affect the measurement accuracy. If the gap between the fixed grid and the moving grid is too large, the measurement data may be inaccurate. The generation of the gap may be related to the accuracy of the sleeve processing, and usually a gap of 3-5 wires (i.e. 0.03-0.05 mm) needs to be reserved. Since the guide rod is located inside, this limits the maximum stroke of the digital indicator, which is usually around 26 mm. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a digital display indicator for precision measurement to solve the problems of coaxial processing holes of the sleeve after riveting, precision limiting sliding, guide clearance ensuring sliding, affecting precision, large gap between fixed and movable grids, data errors, and other problems related to processing precision.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a digital display indicator for precision measurement, comprising a shell, a bearing seat fixing device is arranged inside the shell, an upper sleeve device is arranged on one side of the shell, a lower sleeve device is arranged on one side of the bearing seat fixing device, and a measuring device is arranged inside the lower sleeve device for precise measurement of small devices.

[0007] Preferably, the bearing seat fixing device includes a lower bearing seat, a bearing body, an elastic disc, and a side bearing seat, the lower bearing seat is fixedly installed inside the shell, the bearing body is installed on one side of the lower bearing seat, the elastic disc is opened on one side of the lower bearing seat, and the side bearing seat is fixedly installed on one side of the lower bearing seat.

[0008] Preferably, the upper shaft sleeve device comprises an upper bearing sleeve and an upper bearing cap, wherein the upper bearing sleeve is fixedly mounted on one side of the housing, and the upper bearing cap is detachably mounted on one end of the upper bearing sleeve.

[0009] Preferably, the lower sleeve device comprises a lower bearing sleeve rod and a lower sleeve body, the lower bearing sleeve rod is fixedly mounted on one side of the housing, and the lower sleeve body is fixedly mounted on one side of the lower bearing sleeve rod.

[0010] Preferably, the measuring device includes a measuring rod, a measuring head, a screw, and a piston sleeve. The measuring rod is movably sleeved inside the lower bearing sleeve rod and the lower shaft sleeve body, the measuring head is fixedly mounted on one end of the measuring rod, and the piston sleeve is fixedly mounted on one end of the measuring rod by a screw.

[0011] Preferably, the measuring device also includes a fixed grid seat, fixed grid bars, two screws, two bearing bodies, an upper bearing adjustment seat, a spring, and two elastic discs. The fixed grid seat is fixedly mounted on the top of the measuring rod by bolts, the fixed grid bars are fixedly mounted on the top of the fixed grid seat, the second bearing body is fixedly mounted on one side of the upper bearing adjustment seat by two screws, the upper bearing adjustment seat is fixedly mounted on the top of the shell by bolts, one end of the spring is fixedly mounted on the bottom of the measuring rod by bolts, the other end of the spring is fixedly mounted on the inside of the lower bearing sleeve by bolts, and the second elastic disc is sleeved on the outer surface of the upper bearing adjustment seat.

[0012] Preferably, the measuring device further comprises a cable arrangement seat and a measuring plate, wherein the measuring plate is fixedly mounted on the top of the housing by means of bolts, and the cable arrangement seat is fixedly mounted on the top of the measuring plate.

[0013] Preferably, circular holes are provided at both ends of the shell, and the measuring rod moves inside the circular holes.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model presses the lower bearing sleeve rod into the housing and then presses the upper bearing sleeve into the housing (Note: the upper bearing sleeve and the lower bearing sleeve rod can be connected to the housing by press riveting, or by thread + glue). The fixed grid seat is fixed to the measuring rod by screw two, and then the fixed grid bar is glued to the fixed grid seat. Use screw one to pass through the bearing hole and install it to the lower bearing seat, the side bearing seat, and the upper bearing adjustment seat (two symmetrical pieces on the left and right); then the installed side bearing seat is installed to the lower bearing seat by screw one (do not lock, fine-tuning is required later). The installed measuring rod is passed from the upper bearing sleeve into the interior of the housing, and then the spring is hung on the top of the measuring rod and lowered by screw one, so that after the measuring rod is pushed upward, it will rebound downward by itself, and then the measuring head is tightened to the measuring rod by thread. The piston sleeve is tightened to the upper end of the measuring rod by screw one, and then the upper bearing cap is tightened to the upper bearing sleeve by thread. The above structure achieves the effect of more precise adjustment;

[0016] The utility model installs the lower bearing seat to the bottom surface of the housing by dropping it on (with an elastic disc placed in the middle to perform pre-stressing, locking, and fine-tuning functions), the three bearing bodies of the lower bearing seat contact the plane of the fixed grid seat, and two bearing bodies contact the side of the fixed grid seat, and the two side bearing seats are adjusted at the same time, so that these bearing bodies are completely in contact with the two sides of the bottom surface of the fixed grid seat (they cannot be stuck, and fine-tuning is performed through the elastic disc one and the mechanical clearance of the parts), and finally the upper bearing adjustment seat is installed on the front of the housing (with an elastic disc two placed in the middle to perform pre-stressing, locking, and fine-tuning functions), the plane of the fixed grid seat is larger than the fixed grid, so there is a side where the upper bearing adjustment seat can be installed, so that the bearing body two contacts and rolls with the fixed grid seat. After completing this installation, the front, back, left, and right sides of the measuring rod have been limited by the bearing body one and the bearing body one, and can only slide up and down (pushed up and pulled back by the spring). The measuring board is installed on the front of the shell, and the data of the fixed grid and the measuring board are transmitted to the display module through the cable holder + cable. Finally, the back cover is installed to the bottom of the shell by screws. The above structure can achieve the effect of more precise movement and measurement through the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the bearing seat fixing device, the upper sleeve device and the lower sleeve device of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the measuring device of the present utility model.

[0020] [Reference Signs]

[0021] 1. Shell; 2. Bearing seat fixing device; 3. Upper sleeve device; 4. Lower sleeve device; 5. Measuring device; 201. Lower bearing seat; 202. Bearing body one; 203. Elastic disc one; 204. Side bearing seat; 205. Back cover; 301. Upper bearing sleeve; 302. Upper bearing cap; 401. Lower bearing sleeve rod; 402. Lower sleeve body; 501. Measuring rod; 502. Measuring head; 503. Screw one; 504. Piston sleeve; 505. Fixed grid seat; 506. Fixed grid bar; 507. Screw two; 508. Bearing body two; 509. Upper bearing adjustment seat; 510. Spring; 511. Elastic disc two; 512. Cable holder; 513. Measuring plate. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0023] The preferred embodiment of the digital display indicator for precise measurement provided by the utility model is as follows: Figures 1 to 3 As shown: it includes a shell 1, a bearing seat fixing device 2 is arranged inside the shell 1, an upper sleeve device 3 is arranged on one side of the shell 1, a lower sleeve device 4 is arranged on one side of the bearing seat fixing device 2, and a measuring device 5 is arranged inside the lower sleeve device 4 for precise measurement of small devices.

[0024] Preferably, the bearing seat fixing device 2 includes a lower bearing seat 201, a bearing body 202, an elastic disc 203, and a side bearing seat 204. The lower bearing seat 201 is fixedly installed inside the shell 1, the bearing body 202 is installed on one side of the lower bearing seat 201, the elastic disc 203 is opened on one side of the lower bearing seat 201, and the side bearing seat 204 is fixedly installed on one side of the lower bearing seat 201.

[0025] Preferably, the upper shaft sleeve device 3 includes an upper bearing sleeve 301 and an upper bearing cap 302 . The upper bearing sleeve 301 is fixedly mounted on one side of the housing 1 , and the upper bearing cap 302 is detachably mounted on one end of the upper bearing sleeve 301 .

[0026] Preferably, the lower sleeve device 4 includes a lower bearing sleeve rod 401 and a lower sleeve body 402 . The lower bearing sleeve rod 401 is fixedly mounted on one side of the housing 1 , and the lower sleeve body 402 is fixedly mounted on one side of the lower bearing sleeve rod 401 . Embodiment 2

[0027] On the basis of the first embodiment, the preferred embodiment of the digital display indicator for precision measurement provided by the present utility model is as follows: Figures 1 to 3 As shown: the measuring device 5 includes a measuring rod 501, a measuring head 502, a screw 503, and a piston sleeve 504. The measuring rod 501 is movably sleeved inside the lower bearing sleeve rod 401 and the lower shaft sleeve body 402. The measuring head 502 is fixedly installed at one end of the measuring rod 501, and the piston sleeve 504 is fixedly installed at one end of the measuring rod 501 by a screw 503.

[0028] Preferably, the measuring device 5 also includes a fixed grid seat 505, a fixed grid bar 506, a second screw 507, a second bearing body 508, an upper bearing adjustment seat 509, a spring 510, and a second elastic disc 511. The fixed grid seat 505 is fixedly installed on the top of the measuring rod 501 by bolts, the fixed grid bar 506 is fixedly installed on the top of the fixed grid seat 505, the second bearing body 508 is fixedly installed on one side of the upper bearing adjustment seat 509 by a second screw 507, the upper bearing adjustment seat 509 is fixedly installed on the top of the shell 1 by bolts, one end of the spring 510 is fixedly installed on the bottom of the measuring rod 501 by bolts, the other end of the spring 510 is fixedly installed on the inside of the lower bearing sleeve rod 401 by bolts, and the second elastic disc 511 is sleeved on the outer surface of the upper bearing adjustment seat 509.

[0029] Preferably, the measuring device 5 further comprises a cable tray 512 and a measuring plate 513 . The measuring plate 513 is fixedly mounted on the top of the housing 1 by bolts, and the cable tray 512 is fixedly mounted on the top of the measuring plate 513 .

[0030] Preferably, circular holes are formed at both ends of the housing 1, and the measuring rod 501 moves inside the circular holes.

[0031] The working process of the utility model is as follows:

[0032] The lower bearing sleeve rod 401 is riveted into the housing 1 and then riveted into the housing 1, and the upper bearing sleeve 301 is riveted into the housing 1 (Note: the upper bearing sleeve 301 and the lower bearing sleeve rod 401 can be connected to the housing 1 by riveting, or by thread + glue). Fix the fixed grid seat 505 to the measuring rod 501 by screw 2 507, and then use glue to glue the fixed grid bar 506 to the fixed grid seat 505. Use screw 1 503 to pass through the bearing hole to install to the lower bearing seat 201, the side bearing seat 204, and the upper bearing adjustment seat 509 (two symmetrical pieces on the left and right); then install the installed side bearing seat 204 to the lower bearing seat 201 by screw 1 503 (do not lock, fine-tune later). The installed measuring rod 501 is passed through the upper bearing sleeve 301 into the housing 1, and then the spring 510 is hung on the measuring rod 501 and lowered to the housing 1 through the screw 1 503, so that after the measuring rod is pushed upward, it will rebound downward by itself, and then the measuring head 502 is screwed onto the measuring rod 501 through the thread. The piston sleeve 504 is screwed onto the upper end of the measuring rod 501 through the screw 1 503, and then the upper bearing cap 302 is screwed onto the upper bearing sleeve 301 through the thread.

[0033] The lower bearing seat 201 is installed to the bottom surface of the shell 1 by falling on it (with an elastic disc 203 in the middle for pre-stressing, locking and fine-tuning functions). The three bearing bodies 202 of the lower bearing seat 201 are in contact with the plane of the fixed grid seat 505, and two bearing bodies 202 are in contact with the side of the fixed grid seat 505. At the same time, the two side bearing seats 204 are adjusted to make these bearing bodies 202 completely contact with the two side surfaces of the bottom surface of the fixed grid seat 505 (they cannot be stuck, and fine-tuning is performed through the elastic disc 203 and the mechanical clearance of the parts). Finally, the upper bearing adjustment seat 509 is installed to the front of the shell 1 (with an elastic disc 2 511 in the middle for pre-stressing, locking and fine-tuning functions). The plane of the fixed grid seat 505 is larger than the fixed grid, so there is a side where the upper bearing adjustment seat 509 can be installed to make the bearing body 2 508 contact and roll with the fixed grid seat 505. After the installation is completed, the measuring rod is limited by the bearing body 1 202 and the bearing body 1 202 in the front, back, left, and right directions, and can only slide up and down (pushing up and then the spring 510 pulls it back). The measuring board 513 is installed on the front of the housing 1, and the data of the fixed grid and the measuring board 513 is transmitted to the display module through the cable holder 512 + cable. Finally, the back cover 205 is installed on the bottom of the housing 1 through the screw 1 503.

[0034] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0035] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0036] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A digital indicator for precision measurement, comprising a housing (1), characterized in that: A bearing seat fixing device (2) is arranged inside the housing (1), an upper shaft sleeve device (3) is arranged on one side of the housing (1), a lower shaft sleeve device (4) is arranged on one side of the bearing seat fixing device (2), and a measuring device (5) is arranged inside the lower shaft sleeve device (4) for performing precise measurement of a small device.

2. A digital indicator for precision measurement according to claim 1, characterized in that: The bearing seat fixing device (2) comprises a lower bearing seat (201), a bearing body (202), an elastic disc (203), and a side bearing seat (204); the lower bearing seat (201) is fixedly mounted inside the housing (1); the bearing body (202) is mounted on one side of the lower bearing seat (201); the elastic disc (203) is opened on one side of the lower bearing seat (201); and the side bearing seat (204) is fixedly mounted on one side of the lower bearing seat (201).

3. A digital indicator for precision measurement according to claim 2, characterized in that: The upper shaft sleeve device (3) comprises an upper bearing sleeve (301) and an upper bearing cap (302); the upper bearing sleeve (301) is fixedly mounted on one side of the housing (1); and the upper bearing cap (302) is detachably mounted on one end of the upper bearing sleeve (301).

4. A digital indicator for precision measurement according to claim 3, characterized in that: The lower shaft sleeve device (4) comprises a lower bearing sleeve rod (401) and a lower shaft sleeve body (402); the lower bearing sleeve rod (401) is fixedly mounted on one side of the housing (1); and the lower shaft sleeve body (402) is fixedly mounted on one side of the lower bearing sleeve rod (401).

5. A digital indicator for precision measurement according to claim 4, characterized in that: The measuring device (5) comprises a measuring rod (501), a measuring head (502), a screw one (503), and a piston sleeve (504); the measuring rod (501) is movably sleeved inside the lower bearing sleeve rod (401) and the lower shaft sleeve body (402); the measuring head (502) is fixedly mounted on one end of the measuring rod (501); and the piston sleeve (504) is fixedly mounted on one end of the measuring rod (501) via a screw one (503).

6. A digital indicator for precision measurement according to claim 5, characterized in that: The measuring device (5) further comprises a fixed grid seat (505), a fixed grid bar (506), a second screw (507), a second bearing body (508), an upper bearing adjustment seat (509), a spring (510), and a second elastic disc (511). The fixed grid seat (505) is fixedly mounted on the top of the measuring rod (501) by means of bolts, the fixed grid bar (506) is fixedly mounted on the top of the fixed grid seat (505), the second bearing body (508) is fixedly mounted on one side of the upper bearing adjustment seat (509) by means of a second screw (507), the upper bearing adjustment seat (509) is fixedly mounted on the top of the housing (1) by means of bolts, one end of the spring (510) is fixedly mounted on the bottom of the measuring rod (501) by means of bolts, the other end of the spring (510) is fixedly mounted on the inside of the lower bearing sleeve rod (401) by means of bolts, and the second elastic disc (511) is sleeved on the outer surface of the upper bearing adjustment seat (509).

7. A digital indicator for precision measurement according to claim 6, characterized in that: The measuring device (5) further comprises a cable tray (512) and a measuring plate (513); the measuring plate (513) is fixedly mounted on the top of the housing (1) by means of bolts; and the cable tray (512) is fixedly mounted on the top of the measuring plate (513).

8. A digital indicator for precision measurement according to claim 5, characterized in that: Circular holes are provided at both ends of the housing (1), and the measuring rod (501) moves inside the circular holes.

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