Mechanical part dimension measuring device

Abstract

The invention relates to the technical field of mechanical part size measurement, in particular to a mechanical part size measuring device which comprises a bottom plate, a horizontal moving mechanism, a centering clamping mechanism and a measuring mechanism are sequentially mounted on the top surface of the bottom plate from left to right, the measuring mechanism comprises a mounting plate, and a sleeve is rotatably connected to the upper portion of the mounting plate. The left end of the sleeve fixedly communicates with a rectangular shell with an opening in the left side, abutting plates are installed on the upper portion and the lower portion of the rectangular shell correspondingly, a horizontal rod is slidably connected to the inner wall of the sleeve, the left end, extending into the rectangular shell, of the horizontal rod is fixedly connected with an isosceles triangle abutting block, and the right end of the horizontal rod is slidably connected with a sliding rod; according to the mechanical part size measuring device, the inner diameter of a sleeve-shaped mechanical part can be measured for multiple times, the measuring tool does not need to be manually operated for multiple times of measurement in the measuring process, and the manual burden is reduced while the measuring error is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical component size measurement, in particular to a mechanical component size measurement device. Background Art

[0002] Mechanical components are the indivisible basic units that make up a machine. They primarily include bearings, gears, hydraulic components, transmission parts, fasteners, springs, molds, and more. The large size of mechanical components directly impacts the performance and lifespan of the equipment, so they must be measured before leaving the factory.

[0003] Currently, mechanical parts are measured manually using measuring instruments such as vernier calipers, vernier height gauges, and vernier depth gauges. However, for some sleeve-shaped mechanical parts, the inner diameter measured by traditional measuring instruments has large errors. In reality, in order to reduce the measurement error, the inner diameter of the sleeve-shaped mechanical parts is measured multiple times and the measured values are averaged. This method of reducing errors undoubtedly increases the burden on the staff.

[0004] In order to solve the above problems, we have made improvements and proposed a device for measuring the size of mechanical parts. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: The present invention provides a mechanical parts dimension measuring device, comprising a base plate, wherein a horizontal moving mechanism, a centering clamping mechanism and a measuring mechanism are sequentially installed on the top surface of the base plate from left to right, wherein the measuring mechanism comprises a mounting plate, wherein the upper portion of the mounting plate is rotatably connected to a sleeve, wherein the left end of the sleeve is fixedly connected to a rectangular shell with a left opening, wherein the upper and lower portions of the rectangular shell are both equipped with abutment plates, wherein the inner wall of the sleeve is slidably connected to a horizontal rod, wherein the left end of the horizontal rod extending to the interior of the rectangular shell is fixedly connected to an isosceles triangle butt block, wherein the right end of the horizontal rod is slidably connected to a slide rod, wherein the right end of the slide rod is rotatably connected to a connecting block; The lower right side of the mounting plate is rotatably connected to a rotating rod, and the outer wall of the rotating rod is coaxially fixedly connected to an incomplete gear and a cylindrical cam. A plurality of arc-shaped racks are distributed in a circular array on the side surface of the incomplete gear, and a plurality of isosceles trapezoidal guide grooves corresponding to the arc-shaped racks are opened on the side surface of the cylindrical cam. A folding rod is fixedly connected to the bottom of the connecting block, and the left end of the folding rod is in contact with the inner wall of the isosceles trapezoidal guide groove.

[0006] As a preferred technical solution of the present invention, the horizontal moving mechanism includes a fixed plate and a movable plate, the fixed plate is fixedly connected to the top surface of the base plate, a first threaded rod is threadedly connected to the fixed plate, and the right end of the first threaded rod is rotatably connected to the movable plate.

[0007] As a preferred technical solution of the present invention, the left end of the first threaded rod is coaxially fixedly connected to a handwheel, the top surface of the base plate is also fixedly connected to a guide rail, and the movable plate is slidably connected to the guide rail.

[0008] As a preferred technical solution of the present invention, the centering clamping mechanism includes a circular disc, three sliding grooves are opened on the right side of the circular disc, and the three sliding grooves are distributed in a circular array, a second threaded rod is rotatably connected between the inner walls of the opposite sides of the sliding groove, the outer wall of the second threaded rod is threadedly connected to a clamping block, and the clamping block is slidably connected to the sliding groove.

[0009] As a preferred technical solution of the present invention, the outer wall of the disc is rotatably connected to a bevel gear ring, three bevel gears are meshed on the bevel gear ring, and the second threaded rod extends through one end of the disc and is coaxially fixedly connected to the bevel gear, and one of the bevel gears is also coaxially fixedly connected to a knob through a rotating shaft.

[0010] As a preferred technical solution of the present invention, the left side of the abutment plate is integrally connected with a support plate, and a spring is fixedly connected between the support plate and the inner wall of the rectangular shell. A forty-five-degree chamfer is provided at the right corner of the abutment plate, and the angle between the hypotenuse of the isosceles triangle abutment block and the horizontal plane is forty-five degrees.

[0011] As a preferred technical solution of the present invention, a reduction motor is installed on the left side of the mounting plate, and the output shaft of the reduction motor is coaxially fixedly connected to the rotating rod.

[0012] As a preferred technical solution of the present invention, a spur gear is coaxially fixed to the outer wall of the sleeve, and the spur gear can mesh with the arc-shaped rack on the incomplete gear.

[0013] As a preferred technical solution of the present invention, a sliding cavity is opened inside the right side of the horizontal rod, a slide is slidably connected inside the sliding cavity, and the left end of the sliding rod extends to the left end inside the sliding cavity and is fixedly connected to the slide; A limiting rod is fixedly connected between opposite sides of the inner wall of the sliding cavity, and the limiting rod is slidably connected to the slide plate. A buffer spring is sleeved on the outside of the sliding rod, and the buffer spring is located between the horizontal rod and the connecting block.

[0014] As a preferred technical solution of the present invention, the top surface of the base plate is also fixedly connected to the limiting plate, the right end of the rotating rod is rotatably connected to the side of the limiting plate, the folding rod is slidingly connected to the limiting plate, the outer wall of the folding rod is fixedly connected to the positioning plate, the outer side of the folding rod is provided with a reset spring, and the reset spring is located between the positioning plate and the limiting plate.

[0015] The beneficial effects of the present invention are as follows: this mechanical parts dimension measuring device drives the spur gear to rotate through the incomplete gear. During the rotation of the spur gear, the left end of the folding rod slides on the bottom surface of the isosceles trapezoidal guide groove of the cylindrical cam, and then the incomplete gear rotates, and the incomplete gear will disengage from the spur gear. At this time, the isosceles trapezoidal guide groove of the cylindrical cam will contact the folding rod, causing it to move to the left, and the connecting block will move to the left, driving the horizontal rod to move to the left, and the two abutment plates will move outward through the isosceles triangle abutment block, and finally abut against the inner wall of the sleeve-shaped mechanical part. At this time, if the connecting block continues to move to the left, the sliding rod will slide inside the sliding cavity of the horizontal rod, and the staff can start reading. Then repeat the above process, and the inner diameter of the sleeve-shaped mechanical part can be measured multiple times without the need for manual operation of the measuring tool for multiple measurements, thereby reducing measurement errors and reducing labor burden. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a three-dimensional schematic diagram of a mechanical parts dimension measuring device of the present invention; Figure 2 It is a front view schematic diagram of a mechanical parts dimension measuring device of the present invention; Figure 3 It is a top view schematic diagram of a mechanical parts dimension measuring device of the present invention; Figure 4 The present invention is a mechanical parts size measuring device Figure 3 AA section diagram; Figure 5 This is a three-dimensional schematic diagram of a centering and clamping mechanism of a mechanical parts dimension measuring device of the present invention; Figure 6 This is a three-dimensional schematic diagram of a measuring mechanism of a mechanical parts dimension measuring device according to the present invention; Figure 7 The present invention is a mechanical parts size measuring device Figure 4 A magnified schematic diagram; In the figure: 1. Base plate; 2. Fixed plate; 3. Movable plate; 4. First threaded rod; 5. Disc; 6. Second threaded rod; 7. Clamping block; 8. Bevel gear ring; 9. Bevel gear; 10. Mounting plate; 11. Sleeve; 12. Rectangular housing; 13. Abutment plate; 14. Horizontal rod; 15. Isosceles triangle abutment block; 16. Sliding rod; 17. Connecting block; 18. Rotating rod; 19. Incomplete gear; 20. Cylindrical cam; 21. Folding rod; 22. Spur gear; 23. Slide plate; 24. Limiting plate. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0018] Example: Figure 1-Figure 3 As shown, a mechanical parts dimension measuring device includes a base plate 1, and a horizontal moving mechanism, a centering clamping mechanism and a measuring mechanism are installed on the top surface of the base plate 1 in sequence from left to right.

[0019] like Figure 5 As shown, the centering clamping mechanism includes a disc 5, three slide grooves are opened on the right side of the disc 5, and the three slide grooves are distributed in a circular array, a second threaded rod 6 is rotatably connected between the inner walls of the opposite sides of the slide groove, the outer wall of the second threaded rod 6 is threadedly connected to a clamping block 7, and the clamping block 7 is slidably connected to the slide groove.

[0020] The outer wall of the disc 5 is rotatably connected to a bevel gear ring 8, on which three bevel gears 9 are meshed, and a second threaded rod 6 extends through one end of the disc 5 and is coaxially fixedly connected to the bevel gear 9, one of the bevel gears 9 is also coaxially fixedly connected to a knob via a rotating shaft.

[0021] Place the sleeve-shaped mechanical part between the three clamping blocks 7, rotate one of the bevel gears 9, drive a second threaded rod 6 to rotate, and the bevel gear 9 drives the bevel gear ring 8 to rotate, that is, the other two bevel gears 9 are driven to rotate through the bevel gear ring 8, and the other two second threaded rods 6 rotate synchronously, further making the three clamping blocks 7 synchronously approach the center of the disc 5 to perform centering clamping on the sleeve-shaped mechanical part.

[0022] like Figure 2 As shown, the horizontal moving mechanism includes a fixed plate 2 and a movable plate 3. The fixed plate 2 is fixedly connected to the top surface of the base plate 1. A first threaded rod 4 is threadedly connected to the fixed plate 2. The right end of the first threaded rod 4 is rotatably connected to the movable plate 3. The left end of the first threaded rod 4 is coaxially fixedly connected to a handwheel. The top surface of the base plate 1 is also fixedly connected to a guide rail. The movable plate 3 is slidably connected to the guide rail. By rotating the first threaded rod 4 by the handwheel, the first threaded rod 4 drives the movable plate 3 to move right along the guide rail, and causes the rectangular shell 12 to enter the interior of the sleeve-shaped mechanical component.

[0023] The measuring mechanism includes a mounting plate 10, the upper part of which is rotatably connected to a sleeve 11, the left end of the sleeve 11 is fixedly connected to a rectangular shell 12 with an opening on the left side, and the upper and lower parts of the rectangular shell 12 are both installed with abutment plates 13, and the two abutment plates 13 are symmetrical up and down. The inner wall of the sleeve 11 is slidably connected to a horizontal rod 14, and scale lines are set on the horizontal rod 14. The scale corresponding to the right side of the sleeve 11 in the initial position is the length of the abutment plate 13, and the inner diameter reading of the sleeve-shaped mechanical part is the length of the abutment plate 13 plus the distance moved to the left by the horizontal rod 14.

[0024] like Figure 4 As shown, the left end of the horizontal rod 14 extending to the inside of the rectangular housing 12 is fixedly connected to an isosceles triangle stop 15, the right end of the horizontal rod 14 is slidably connected to a slide rod 16, and the right end of the slide rod 16 is rotatably connected to a connecting block 17. It should be noted that the central axes of the sleeve 11, the horizontal rod 14, the rectangular housing 12, the slide rod 16 and the disc 5 are all on the same horizontal line; like Figure 6 As shown, the lower right side of the mounting plate 10 is rotatably connected to a rotating rod 18, and the outer wall of the rotating rod 18 is coaxially fixedly connected to an incomplete gear 19 and a cylindrical cam 20. A plurality of arc-shaped racks are distributed in a circular array on the side surface of the incomplete gear 19, and a plurality of isosceles trapezoidal guide grooves corresponding to the arc-shaped racks are opened on the side surface of the cylindrical cam 20. A folding rod 21 is fixedly connected to the bottom of the connecting block 17, and the left end of the folding rod 21 is in contact with the inner wall of the isosceles trapezoidal guide groove.

[0025] like Figure 4 As shown, the left side of the butt plate 13 is integrally connected with a support plate, and a spring is fixedly connected between the support plate and the inner wall of the rectangular shell 12. A forty-five-degree chamfer is provided at the right corner of the butt plate 13. Since the angle between the hypotenuse of the isosceles triangle butt block 15 and the horizontal plane is forty-five degrees, the extended length of the butt plate 13 is the distance that the horizontal rod 14 moves to the left.

[0026] like Figure 2 and Figure 4 As shown, a reduction motor is installed on the left side of the mounting plate 10, and the output shaft of the reduction motor is coaxially fixedly connected to the rotating rod 18. A spur gear 22 is coaxially fixed to the outer wall of the sleeve 11, and the spur gear 22 can engage with the arc rack on the incomplete gear 19.

[0027] like Figure 7 As shown, a sliding cavity is opened inside the right side of the horizontal rod 14, and a slide plate 23 is slidably connected inside the sliding cavity. The left end of the sliding rod 16 extends to the left end inside the sliding cavity and is fixedly connected to the slide plate 23. A limit rod is fixedly connected between the opposite sides of the inner wall of the sliding cavity, and the limit rod is slidably connected to the slide plate 23. A buffer spring is provided on the outside of the sliding rod 16, and the buffer spring is located between the horizontal rod 14 and the connecting block 17. The elastic force of the buffer spring is much greater than the elastic force of the spring between the support plate and the inner wall of the rectangular shell 12.

[0028] The top surface of the base plate 1 is also fixedly connected to the limit plate 24, the right end of the rotating rod 18 is rotatably connected to the side of the limit plate 24, the folding rod 21 is slidingly connected to the limit plate 24, the outer wall of the folding rod 21 is fixedly connected to the positioning plate, and the outer sleeve of the folding rod 21 is provided with a return spring, and the return spring is located between the positioning plate and the limit plate 24, and the return spring can make the folding rod 21 return to its original position.

[0029] Then the reduction motor is started, and the incomplete gear 19 drives the spur gear 22 to rotate. During the rotation of the spur gear 22, the left end of the folding rod 21 slides on the bottom surface of the isosceles trapezoidal guide groove of the cylindrical cam 20, and then the incomplete gear 19 rotates, and the incomplete gear 19 will be disengaged from the spur gear 22. At this time, the isosceles trapezoidal guide groove of the cylindrical cam 20 will contact the folding rod 21, causing it to move to the left, and the connecting block 17 will move to the left, driving the horizontal rod 14 to move to the left, and the two abutment plates 13 will move outward through the isosceles triangle abutment block 15, and finally engage with the sleeve-shaped mechanical part. The inner wall of the component will come into conflict. At this time, if the connecting block 17 continues to move to the left, the sliding rod 16 will slide inside the sliding cavity of the horizontal rod 14, and the staff can start reading. Then repeat the above process to measure the inner diameter of the sleeve-shaped mechanical part multiple times. The values of multiple measurements can be averaged as the reading of the inner diameter of the sleeve-shaped mechanical part. At the same time, the difference between the maximum radius and the minimum radius is selected through the values of multiple measurements to evaluate the roundness of the sleeve-shaped mechanical part. There is no need to manually operate the measuring tool for multiple measurements, which reduces measurement errors and reduces manual burden.

[0030] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A device for measuring the size of mechanical parts, comprising a base plate (1), characterized in that: The top surface of the bottom plate (1) is sequentially mounted with a horizontal moving mechanism, a centering clamping mechanism and a measuring mechanism from left to right, the measuring mechanism comprising a mounting plate (10), the upper portion of the mounting plate (10) is rotatably connected to a sleeve (11), the left end of the sleeve (11) is fixedly connected to a rectangular shell (12) with a left opening, the upper and lower portions of the rectangular shell (12) are both mounted with a butt plate (13), the inner wall of the sleeve (11) is slidably connected to a horizontal rod (14), the left end of the horizontal rod (14) extending to the interior of the rectangular shell (12) is fixedly connected to an isosceles triangle butt block (15), the right end of the horizontal rod (14) is slidably connected to a slide rod (16), and the right end of the slide rod (16) is rotatably connected to a connecting block (17); The lower right side of the mounting plate (10) is rotatably connected to a rotating rod (18), and the outer wall of the rotating rod (18) is coaxially fixedly connected to an incomplete gear (19) and a cylindrical cam (20), and a side surface of the incomplete gear (19) is provided with a plurality of arc-shaped racks distributed in a circumferential array, and a side surface of the cylindrical cam (20) is provided with a plurality of isosceles trapezoidal guide grooves corresponding to the arc-shaped racks, and the bottom of the connecting block (17) is fixedly connected to a folding rod (21), and the left end of the folding rod (21) contacts the inner wall of the isosceles trapezoidal guide groove.

2. A mechanical parts dimension measuring device according to claim 1, characterized in that: The horizontal movement mechanism comprises a fixed plate (2) and a movable plate (3), wherein the fixed plate (2) is fixedly connected to the top surface of the base plate (1), a first threaded rod (4) is threadedly connected to the fixed plate (2), and the right end of the first threaded rod (4) is rotatably connected to the movable plate (3).

3. A mechanical parts dimension measuring device according to claim 2, characterized in that: The left end of the first threaded rod (4) is coaxially fixedly connected to a hand wheel, the top surface of the bottom plate (1) is also fixedly connected to a guide rail, and the movable plate (3) is slidably connected to the guide rail.

4. The mechanical parts dimension measuring device according to claim 1, characterized in that: The centering clamping mechanism includes a disc (5), three slide grooves are opened on the right side of the disc (5), and the three slide grooves are distributed in a circular array, a second threaded rod (6) is rotatably connected between the inner walls of the opposite sides of the slide groove, and the outer wall of the second threaded rod (6) is threadedly connected to a clamping block (7), and the clamping block (7) is slidably connected to the slide groove.

5. A mechanical parts dimension measuring device according to claim 4, characterized in that: The outer wall of the disc (5) is rotatably connected to a bevel gear ring (8), and three bevel gears (9) are meshed on the bevel gear ring (8). One end of the second threaded rod (6) extends through the outside of the disc (5) and is coaxially fixedly connected to the bevel gear (9), and one of the bevel gears (9) is also coaxially fixedly connected to a knob via a rotating shaft.

6. The mechanical parts dimension measuring device according to claim 1, characterized in that: The left side of the support plate (13) is integrally connected to a support plate, and a spring is fixedly connected between the support plate and the inner wall of the rectangular shell (12). A forty-five-degree chamfer is provided at the right corner of the support plate (13), and the angle between the hypotenuse of the isosceles triangle support block (15) and the horizontal plane is forty-five degrees.

7. The mechanical parts dimension measuring device according to claim 1, characterized in that: A reduction motor is installed on the left side of the mounting plate (10), and the output shaft of the reduction motor is coaxially fixedly connected to the rotating rod (18).

8. The mechanical parts dimension measuring device according to claim 1, characterized in that: A spur gear (22) is coaxially fixed to the outer wall of the sleeve (11), and the spur gear (22) can mesh with the arc-shaped rack on the incomplete gear (19).

9. The mechanical parts dimension measuring device according to claim 1, characterized in that: A sliding cavity is provided inside the right side of the horizontal rod (14), a slide plate (23) is slidably connected inside the sliding cavity, and the left end of the slide rod (16) extends to the left end inside the sliding cavity and is fixedly connected to the slide plate (23); A limiting rod is fixedly connected between opposite sides of the inner wall of the sliding cavity, and the limiting rod is slidably connected to the slide plate (23). A buffer spring is sleeved on the outside of the sliding rod (16), and the buffer spring is located between the horizontal rod (14) and the connecting block (17).

10. The mechanical parts dimension measuring device according to claim 1, characterized in that: The top surface of the bottom plate (1) is also fixedly connected to a limiting plate (24), the right end of the rotating rod (18) is rotatably connected to the side of the limiting plate (24), the folding rod (21) is slidably connected to the limiting plate (24), the outer wall of the folding rod (21) is fixedly connected to a positioning plate, and the outer surface of the folding rod (21) is provided with a reset spring, and the reset spring is located between the positioning plate and the limiting plate (24).

Images