Rapid aperture measuring instrument

Abstract

The utility model relates to the technical field of measuring devices, in particular to a rapid aperture measuring instrument. Comprising a box body, a cover plate covering a box opening of the box body, a sliding groove formed in the bottom face of the cover plate, a sliding block connected to the sliding groove in a sliding mode, a rack arranged on the bottom face of the sliding block, a fixing block arranged on the bottom face of the cover plate, a rotating shaft rotationally connected to the box body, a gear arranged outside the rotating shaft in a sleeving mode and meshed with the rack, and a measuring meter arranged at one end of the box body. The movable measuring head is arranged on the sliding block, the fixed measuring head is arranged on the fixed block, the movable measuring head and the fixed measuring head are oppositely arranged, the measuring end of the measuring meter abuts against one end face of the sliding block, a measuring through groove communicated with the sliding groove is formed in the top face of the cover plate, and the sliding groove and the measuring through groove are arranged in parallel. The measuring end of the movable measuring head and the measuring end of the fixed measuring head protrude out of the cover plate through the measuring through groove. The device is simple in structure, convenient to operate, efficient and low in cost, reduces the influence of human factors on the measurement result, and can quickly and accurately measure the aperture size.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring devices, in particular to a rapid aperture measuring instrument. Background Art

[0002] At present, most industries rely on traditional CMM / OMM inspection for product inner hole inspection. This inspection method is inefficient and time-sensitive, and it is difficult to meet the requirements of high quality and timeliness. Pin gauge can only determine whether it is qualified or not. When the aperture is marginal, it cannot be discovered in time and the operator cannot be reminded to make corrections, which has certain quality risks. There are many high-efficiency full inspection machines introduced, but the inspection size is relatively single and the price is expensive, especially for products with a short product cycle. This single and expensive instrument is difficult for users to afford.

[0003] Among the existing patents, the Chinese patent document with application number 201810476792.8 discloses a caliper that can immediately read the inner diameter deviation and a method for measuring the inner diameter deviation, including a micrometer, a fixed clamp and a caliper body, wherein the micrometer is fixed between the two caliper feet of the caliper body by the fixed clamp, and the micrometer is used to measure the displacement between the two caliper feet at the position where the micrometer is located. The caliper in this patent document can measure the position change of the caliper feet at its location, that is, the displacement, through the micrometer, and then convert the actual deviation of the end of the caliper foot from the standard distance; although the caliper has a simple structure, low cost, and is easy to operate, it is greatly affected by human factors, and the operator is prone to shaking during measurement, etc., resulting in unstable measurement and difficult to ensure measurement accuracy.

[0004] Therefore, the defects are very obvious and a solution is urgently needed. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a rapid aperture measuring instrument.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A rapid aperture measuring instrument comprises a box body, a cover plate covering a box opening of the box body, a slide groove arranged on the bottom surface of the cover plate, a slider slidably connected to the slide groove, a rack arranged on the bottom surface of the slider, a fixed block arranged on the bottom surface of the cover plate and arranged in a straight line with the slider, a rotating shaft rotatably connected to the box body, a gear sleeved outside the rotating shaft and meshing with the rack, a measuring table installed at one end of the box body, a movable probe installed on the slider and a fixed probe installed on the fixed block, the movable probe and the fixed probe are arranged opposite to each other, the measuring end of the measuring table contacts one end surface of the slider, the top surface of the cover plate is provided with a measuring slot connected to the slide groove, the slide groove and the measuring slot are arranged in parallel, and the measuring ends of the movable probe and the fixed probe protrude to the outside of the cover plate through the measuring slot.

[0008] Furthermore, the slide groove is a T-shaped groove, and the sliding block is a T-shaped block.

[0009] Furthermore, the fixing block is slidably inserted in the sliding groove, and the fixing block is locked on the box body via a locking piece.

[0010] Furthermore, the locking piece is threadedly connected to the fixing block after penetrating the side wall of the box.

[0011] Furthermore, the end of the rotating shaft is rotatably connected to the box body via a bearing.

[0012] Furthermore, at least one end of the rotating shaft is provided with a knob, and the knob is located outside the box.

[0013] Furthermore, a guide rail is installed on the bottom surface of the cover plate, the guide rail is located in the box body, the slide groove is arranged on the guide rail, and an avoidance groove is opened on the top surface of the guide rail. The avoidance groove is arranged parallel to the measuring groove, and the measuring groove is connected with the slide groove via the avoidance groove. The movable probe and the fixed probe are both located in the avoidance groove.

[0014] Furthermore, the movable probe and / or the fixed probe includes a mounting block and a semicircular head arranged on the mounting block, the semicircular head protrudes out of the cover plate through the measuring groove, the mounting block of the movable probe is installed on the slider, and the mounting block of the fixed probe is installed on the fixed block, and the semicircular head of the movable probe and the semicircular head of the fixed probe are arranged correspondingly.

[0015] Furthermore, the measuring gauge is a micrometer.

[0016] The beneficial effects of the utility model: in actual application, at the beginning, the movable probe and the fixed probe are in a close state, at this time, the ring to be measured (such as: steel ring, etc.) is sleeved outside the movable probe and the fixed probe after they are close together, and then the rotating shaft is rotated so that the gear rotates synchronously with the rotating shaft, and the rotating gear is meshed with the rack to drive the slider to move along the slide groove in the direction away from the fixed block, and the end face of the slider always contacts the measuring end of the measuring table, so that the movable probe moves in the direction away from the fixed probe (the movable probe and the fixed probe are gradually opened) until the movable probe and the fixed probe respectively contact the hole wall of the ring to be measured, at this time the rotating shaft cannot be rotated further, and the measuring table will display the aperture reading of the ring to be measured, so that the aperture size can be measured quickly and accurately. The utility model has a simple structure, convenient and efficient operation, low cost, reduces the influence of human factors on the measurement results, and can measure the aperture size quickly and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 It is a cross-sectional view of the utility model.

[0019] Figure 3 It is a schematic diagram of the exploded structure of the utility model.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the movable probe or the fixed probe of the utility model.

[0021] Description of reference numerals:

[0022] 1. Box body; 2. Cover plate; 3. Slide groove; 4. Slider; 5. Rack; 6. Fixed block; 7. Rotating shaft; 8. Gear; 9. Measuring table; 10. Movable probe; 11. Fixed probe; 12. Measuring slot; 13. Locking piece; 14. Bearing; 15. Knob; 16. Guide rail; 17. Avoidance groove; 18. Mounting block; 19. Semicircular head. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0024] like Figures 1 to 4 As shown, the utility model provides a rapid aperture measuring instrument, which includes a box body 1, a cover plate 2 covering the box opening of the box body 1, a slide groove 3 arranged on the bottom surface of the cover plate 2, a slider 4 slidably connected to the slide groove 3, a rack 5 arranged on the bottom surface of the slider 4, a fixed block 6 arranged on the bottom surface of the cover plate 2 and arranged in a straight line with the slider 4, a rotating shaft 7 rotatably connected to the box body 1, a gear 8 sleeved outside the rotating shaft 7 and meshing with the rack 5, a measuring table 9 installed at one end of the box body 1, a movable probe 10 installed on the slider 4 and a fixed probe 11 installed on the fixed block 6, the movable probe 10 and the fixed probe 11 are arranged opposite to each other, the measuring end of the measuring table 9 abuts against one end surface of the slider 4, the top surface of the cover plate 2 is provided with a measuring slot 12 connected to the slide groove 3, the slide groove 3 and the measuring slot 12 are arranged in parallel, and the measuring ends of the movable probe 10 and the fixed probe 11 both protrude to the outside of the cover plate 2 through the measuring slot 12.

[0025] In actual application, at the beginning, the movable probe 10 and the fixed probe 11 are in a close state. At this time, the ring to be measured (such as a steel ring, etc.) is placed outside the movable probe 10 and the fixed probe 11 after they are close together. Then the rotating shaft 7 is rotated to make the gear 8 rotate synchronously with the rotating shaft 7. The rotating gear 8 is engaged with the rack 5 to drive the slider 4 to move along the slide groove 3 in the direction away from the fixed block 6. The end face of the slider 4 always contacts the measuring end of the measuring gauge 9, so that the movable probe 10 moves in the direction away from the fixed probe 11 (the movable probe 10 and the fixed probe 11 gradually open) until the movable probe 10 and the fixed probe 11 respectively contact the hole wall of the ring to be measured. At this time, the rotating shaft 7 cannot be rotated further. The measuring gauge 9 will display the aperture reading of the ring to be measured, or the aperture size of the ring to be measured can be obtained by simply converting the reading of the measuring gauge 9, so that the aperture size can be measured quickly and accurately. The utility model has the advantages of simple structure, convenient and efficient operation, low cost, reduced influence of human factors on the measurement result, and can measure the aperture size quickly and accurately.

[0026] In this embodiment, the slide groove 3 is a T-shaped groove, and the slider 4 is a T-shaped block; this structural design not only improves the movement stability and position accuracy of the slider 4, but also facilitates the disassembly, assembly and maintenance of the slider 4.

[0027] In this embodiment, the fixing block 6 is slidably inserted in the slide groove 3, and the fixing block 6 is locked on the box body 1 via the locking piece 13. This structural design facilitates the disassembly and maintenance of the fixing block 6 and ensures the stability of the fixing block 6.

[0028] In this embodiment, the locking piece 13 is threaded through the side wall of the box body 1 and is rotatably connected to the fixed block 6. In use, the locking piece 13 can not only fix the starting position of the fixed block 6, but also can be rotated to make the locking piece 13 screw in or out relative to the box body 1, so that the locking piece 13 drives the fixed block 6 to move relative to the slider 4 to adjust the starting distance between the fixed block 6 and the slider 4. After the adjustment is completed, the relative position of the fixed block 6 and the slider 4 is fixed, which improves the flexibility of the fixed block 6. Specifically, the fixed block 6 is a T-shaped block.

[0029] In this embodiment, the end of the rotating shaft 7 is rotatably connected to the housing 1 via a bearing 14. This structural design facilitates the rotation of the rotating shaft 7.

[0030] In this embodiment, at least one end of the rotating shaft 7 is provided with a knob 15, and the knob 15 is located outside the housing 1. The knob 15 is used for an operator to rotate the rotating shaft 7, so as to facilitate the operator to perform measurement operations.

[0031] In this embodiment, a guide rail 16 is installed on the bottom surface of the cover plate 2, the guide rail 16 is located in the box body 1, the slide groove 3 is arranged on the guide rail 16, and an avoidance groove 17 is opened on the top surface of the guide rail 16. The avoidance groove 17 is arranged in parallel with the measuring groove 12, and the measuring groove 12 is connected with the slide groove 3 via the avoidance groove 17. The movable probe 10 and the fixed probe 11 are both located in the avoidance groove 17. During the movement of the movable probe 10, the movable probe 10 moves along the avoidance groove 17, which improves the movement stability of the movable probe 10, and the structural design makes the structure compact, and the movable probe 10 and the fixed probe 11 do not need to be exposed outside the cover plate 2 as a whole.

[0032] In this embodiment, the movable probe 10 and / or the fixed probe 11 include a mounting block 18 and a semicircular head 19 arranged on the mounting block 18, the semicircular head 19 protrudes to the outside of the cover plate 2 through the measuring groove 12, the mounting block 18 of the movable probe 10 is installed on the slider 4, the mounting block 18 of the fixed probe 11 is installed on the fixed block 6, the semicircular head 19 of the movable probe 10 and the semicircular head 19 of the fixed probe 11 are correspondingly arranged; the semicircular head 19 of the movable probe 10 and the semicircular head 19 of the fixed probe 11 are matched to form a cylinder; the mounting block 18 is movably arranged in the avoidance groove 17. In actual application, at the beginning, the semicircular head 19 of the movable probe 10 and the semicircular head 19 of the fixed probe 11 are matched to form a cylinder. At this time, the ring to be measured (such as a steel ring, etc.) is sleeved outside the semicircular head 19 of the movable probe 10 and the semicircular head 19 of the fixed probe 11 after the matching, and then the rotating shaft 7 is rotated to make the gear 8 rotate synchronously with the rotating shaft 7. The rotating gear 8 is meshed with the rack 5 to drive the slider 4 to move along the slide groove 3 in the direction away from the fixed block 6. The end face of the slider 4 always contacts the measuring end of the measuring table 9, so that the movable probe 10 is The semicircular head 19 of the probe 10 moves in the direction away from the semicircular head 19 of the fixed probe 11 (the semicircular head 19 of the movable probe 10 and the semicircular head 19 of the fixed probe 11 gradually open) until the semicircular head 19 of the movable probe 10 and the semicircular head 19 of the fixed probe 11 respectively hit the hole wall of the ring to be measured. At this time, the rotating shaft 7 cannot be rotated further, and the measuring table 9 will display the aperture reading of the ring to be measured, or the aperture size of the ring to be measured can be obtained by simply converting the reading of the measuring table 9, so as to be able to quickly and accurately measure the aperture size.

[0033] In this embodiment, the measuring gauge 9 is a micrometer.

[0034] All technical features in this embodiment can be freely combined according to actual needs.

[0035] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A rapid aperture measuring instrument, characterized in that: The invention comprises a box body (1), a cover plate (2) covering a box opening of the box body (1), a slide groove (3) arranged on the bottom surface of the cover plate (2), a slider (4) slidably connected to the slide groove (3), a rack (5) arranged on the bottom surface of the slider (4), a fixed block (6) arranged on the bottom surface of the cover plate (2) and arranged in a straight line with the slider (4), a rotating shaft (7) rotatably connected to the box body (1), a gear (8) mounted outside the rotating shaft (7) and meshing with the rack (5), a measuring meter (9) installed at one end of the box body (1), and a measuring device (9) installed at a plurality of positions of the measuring device (1). A movable probe (10) is arranged on a slide block (4) and a fixed probe (11) is installed on a fixed block (6). The movable probe (10) and the fixed probe (11) are arranged opposite to each other. A measuring end of a measuring gauge (9) contacts one end surface of the slide block (4). A measuring slot (12) communicating with the slide slot (3) is provided on the top surface of the cover plate (2). The slide slot (3) and the measuring slot (12) are arranged in parallel. The measuring ends of the movable probe (10) and the fixed probe (11) protrude out of the cover plate (2) through the measuring slot (12).

2. The rapid aperture measuring instrument according to claim 1, characterized in that: The slide groove (3) is a T-shaped groove, and the slide block (4) is a T-shaped block.

3. The rapid aperture measuring instrument according to claim 1, characterized in that: The fixed block (6) is slidably inserted into the slide groove (3), and the fixed block (6) is locked on the box body (1) via a locking piece (13).

4. The rapid aperture measuring instrument according to claim 3, characterized in that: The locking piece (13) is threadedly penetrated through the side wall of the box body (1) and is rotatably connected to the fixing block (6).

5. The rapid aperture measuring instrument according to claim 1, characterized in that: The end of the rotating shaft (7) is rotatably connected to the housing (1) via a bearing (14).

6. The rapid aperture measuring instrument according to claim 1, characterized in that: At least one end of the rotating shaft (7) is provided with a knob (15), and the knob (15) is located outside the box body (1).

7. The rapid aperture measuring instrument according to claim 1, characterized in that: A guide rail (16) is installed on the bottom surface of the cover plate (2), the guide rail (16) is located in the box body (1), the slide groove (3) is arranged on the guide rail (16), and an avoidance groove (17) is opened on the top surface of the guide rail (16), the avoidance groove (17) is arranged in parallel with the measuring groove (12), the measuring groove (12) is connected with the slide groove (3) via the avoidance groove (17), and the movable probe (10) and the fixed probe (11) are both located in the avoidance groove (17).

8. The rapid aperture measuring instrument according to claim 1, characterized in that: The movable probe (10) or / and the fixed probe (11) comprises a mounting block (18) and a semicircular head (19) arranged on the mounting block (18); the semicircular head (19) protrudes out of the cover plate (2) through a measuring slot (12); the mounting block (18) of the movable probe (10) is mounted on a slider (4); the mounting block (18) of the fixed probe (11) is mounted on a fixed block (6); and the semicircular head (19) of the movable probe (10) and the semicircular head (19) of the fixed probe (11) are arranged correspondingly.

9. The rapid aperture measuring instrument according to claim 1, characterized in that: The measuring gauge (9) is a micrometer.

Images