Device for detecting pitch between holes in different planes

Abstract

The invention discloses a non-same plane hole pitch detection device which comprises a centering assembly and two center rods, the centering assembly comprises two moving cylinders, the two moving cylinders are movably connected to the surfaces of the two center rods in a sleeving mode respectively, rotating cylinders are rotationally inserted into the tops of the moving cylinders, and the rotating cylinders are connected with the surfaces of the center rods in a threaded sleeving mode. A plurality of hinge rods are arranged on the outer side of the moving cylinder in the circumferential direction, and the two ends of each hinge rod are connected with the moving cylinder and the center rod correspondingly. The center rod depends on the effect of the centering assembly, when the rotating cylinder is rotated, the moving cylinder moves downwards to drive the hinge rod to be bent and folded, a plurality of arc-shaped hinge positions evenly abut against the inner wall of the measuring hole, and the axis of the center rod can automatically and stably coincide with the center line of the measuring hole from the actual axis of the measuring hole to the axis of the center rod to the measuring datum of the vernier caliper. A deviation-free transmission path is formed, so that the distance detection result of the two holes in different planes accurately reflects the real axis distance, and the detection precision is greatly improved.

Description

Technical Field

[0001] This invention belongs to the technical field of hole spacing detection devices, and particularly relates to a non-coplanar hole spacing detection device. Background Technology

[0002] In the field of mechanical manufacturing, the spacing inspection of hole-type parts is a crucial step in ensuring assembly accuracy. Currently, B5 and B35 structure motors use flange end caps at the front end, commonly including C-type and D-type flanges. Due to installation requirements, the mounting holes for the flange end caps connecting to the machine base, as well as the mounting holes for the flange faces used by the user, have high precision requirements.

[0003] However, the end cap mounting holes and flange mounting holes of the flange end cap are on two different planes, which cannot be measured directly. Other auxiliary tools are required for measurement, which results in low measurement efficiency. Furthermore, the measurement using auxiliary tools is an indirect measurement, which leads to large cumulative errors and low measurement accuracy. Summary of the Invention

[0004] To address the problems in the prior art, the present invention proposes the following technical solution: A non-coplanar hole spacing detection device includes: a centering component and two center rods. The centering component includes two movable cylinders, which are respectively movably sleeved on the surfaces of the two center rods. A rotating cylinder is rotatably inserted into the top of each movable cylinder. The rotating cylinder is threadedly sleeved on the surface of the center rod. Multiple hinge rods are arranged circumferentially on the outer side of each movable cylinder. Torsion springs are arranged between the hinge rods. The two ends of each hinge rod are respectively connected to the movable cylinder and the center rod. One of the central rods is inserted into one of the measuring holes as a fixed rod, and the other central rod is inserted into another measuring hole as a movable rod. Rotating the rotating cylinder causes the movable cylinder to move downward, and multiple hinged rods bend and fold accordingly. The hinge joints of the hinged rods contact the inner wall of the measuring hole, centering the central rod. The central rod and the center line of the measuring hole are then on the same straight line. The distance between the two non-coplanar measuring holes is obtained by measuring the axial distance between the two central rods.

[0005] As a preferred embodiment of the above technical solution, the centering component further includes two adjusting members. The adjusting members are used to adjust the position between the multiple hinge rods and the center rod. The adjusting members include a first connecting ring and a second connecting ring that are sequentially sleeved on the surface of the corresponding moving cylinder. The two ends of the hinge rod are respectively rotatably inserted into the first connecting ring and the second connecting ring.

[0006] As a preferred embodiment of the above technical solution, the surface of the first connecting ring is provided with a first locking screw, which is used to frictionally fix the first connecting ring to the moving cylinder.

[0007] As a preferred embodiment of the above technical solution, the surface of the second connecting ring is provided with a second locking screw, which is used to frictionally fix the second connecting ring to the central rod.

[0008] As a preferred embodiment of the above technical solution, a limiting groove is formed on the surface of the center rod, and one end of the second locking screw is movably inserted into the limiting groove.

[0009] As a preferred embodiment of the above technical solution, the included angle between the hinge rods is between 120° and 170°, and the hinge surface of the hinge rod is arc-shaped.

[0010] As a preferred embodiment of the above technical solution, the surface of the rotating cylinder is provided with an anti-slip layer, and the anti-slip layer on the surface of the rotating cylinder is rough.

[0011] As a preferred embodiment of the above technical solution, a vernier caliper is also included, wherein the two central rods are respectively connected to the fixed measuring jaw and the movable measuring jaw of the vernier caliper, and the axes of the two central rods are respectively on the same straight line as the measuring bases of the fixed measuring jaw and the movable measuring jaw.

[0012] The beneficial effects of this invention are as follows: 1. Relying on the centering component, the central rod moves downwards as the rotating cylinder rotates, causing the hinge rod to bend and fold. Multiple arc-shaped hinges evenly press against the inner wall of the measuring hole, automatically and stably aligning the axis of the central rod with the center line of the measuring hole. At this point, the axis of the central rod becomes the core reference for measurement. The fixed and moving measuring jaws of the vernier caliper are connected to the two central rods respectively, strictly ensuring that the axis of the central rod and the measuring base of the measuring jaws are on the same straight line. From the actual axis of the measuring hole to the axis of the central rod, and then to the measuring reference of the vernier caliper, a deviation-free transmission path is formed, completely avoiding the errors caused by reference misalignment in traditional testing. This allows the distance measurement results of two non-coplanar holes to accurately reflect the true axis distance, greatly improving the testing accuracy and making the measurement values ​​more reliable. 2. The two ends of the hinge rod are respectively rotatably inserted into the first connecting ring and the second connecting ring. The position of the hinge rod can be adjusted in two directions by adjusting the adjustment component. One is to adjust the overall position of the first connecting ring and the second connecting ring along the axis of the central rod. The other is to adjust the overall position of the first connecting ring and the second connecting ring along the axis of the central rod and change the distance between them to flexibly change the initial included angle and unfolded length of the hinge rod, so as to adapt to measuring holes of different diameters and positions without replacing the core components, making the device more widely applicable. Attached Figure Description

[0013] Figure 1 The diagram shown is a schematic representation of the overall structure of the embodiment; Figure 2 The diagram shown illustrates the installation position of the central component in the embodiment. Figure 3 The image shown is a front sectional view of the centered component in the embodiment; Figure 4 The image shown is a right-side sectional view of the centered component in the embodiment.

[0014] In the diagram: 10, Vernier caliper; 20, Center rod; 21, Limiting groove; 31, Moving cylinder; 32, Rotating cylinder; 33, Hinge rod; 41, First connecting ring; 42, First locking screw; 43, Second connecting ring; 44, Second locking screw. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings.

[0016] Figures 1-4 The non-coplanar hole spacing detection device includes: a centering component and two center rods 20. The centering component includes two movable cylinders 31, which are respectively movably sleeved on the surfaces of the two center rods 20. A rotating cylinder 32 is rotatably inserted into the top of each movable cylinder 31. The surface of the rotating cylinder 32 is provided with an anti-slip layer, which is rough. The rotating cylinder 32 is threadedly sleeved with the surface of the center rods 20. Multiple hinge rods 33 are arranged circumferentially on the outer side of the movable cylinder 31. Torsion springs are arranged between the hinge rods 33. The included angle between the hinge rods 33 is between 120° and 170°. The hinge surface of the hinge rod 33 is arc-shaped. The two ends of the hinge rod 33 are respectively connected to the movable cylinder 31 and the center rod 20. One of the central rods 20 is inserted into one of the measuring holes as a fixed rod, and the other central rod 20 is inserted into another measuring hole as a movable rod. Rotating the rotating cylinder 32 drives the movable cylinder 31 to move downward, and multiple hinge rods 33 bend and fold accordingly. The hinge joints of the hinge rods 33 contact the inner wall of the measuring hole, centering the central rod 20. The central rod 20 is then on the same straight line as the center line of the measuring hole. The distance between the two non-coplanar measuring holes is obtained by measuring the axial distance between the two central rods 20.

[0017] It also includes a vernier caliper 10, with the two central rods 20 respectively connected to the fixed measuring jaw and the movable measuring jaw of the vernier caliper 10, and the axes of the two central rods 20 are respectively on the same straight line as the measuring base of the fixed measuring jaw and the movable measuring jaw.

[0018] In use, insert the two center rods 20 into the measuring holes respectively, rotate the rotating cylinder 32 to move the moving cylinder 31 downward, and bend and fold the hinge rod 33 to press against the hole wall through the arc hinge, so that the center rod 20 is aligned with the hole axis. Read the value of the vernier caliper 10 to obtain the hole distance.

[0019] The center rod 20, relying on the centering component, moves downwards as the rotating cylinder 32 rotates, causing the movable cylinder 31 to bend and fold the hinge rod 33. Multiple arc-shaped hinges evenly press against the inner wall of the measuring hole, automatically and stably aligning the axis of the center rod 20 with the center line of the measuring hole. At this point, the axis of the center rod 20 becomes the core reference for measurement. The fixed measuring jaw and the movable measuring jaw of the vernier caliper 10 are respectively connected to the two center rods 20, strictly ensuring that the axis of the center rod 20 and the measuring base of the measuring jaw are on the same straight line. From the actual axis of the measuring hole to the axis of the center rod 20, and then to the measuring reference of the vernier caliper 10, a deviation-free transmission path is formed, completely avoiding the errors caused by reference misalignment in traditional detection. This allows the detection result of the distance between two non-coplanar holes to accurately reflect the true axis distance, greatly improving detection accuracy and making the measurement value more reliable.

[0020] Figures 2-4 In the centering component, there are also two adjusting members. The adjusting members are used to adjust the position between the multiple hinge rods 33 and the center rod 20. The adjusting members include a first connecting ring 41 and a second connecting ring 43 that are sequentially sleeved on the surface of the corresponding moving cylinder 31. The two ends of the hinge rod 33 are respectively rotatably inserted into the first connecting ring 41 and the second connecting ring 43.

[0021] The first connecting ring 41 is provided with a first locking screw 42, which is used to frictionally fix the first connecting ring 41 to the moving cylinder 31.

[0022] The second connecting ring 43 is provided with a second locking screw 44, which is used to frictionally fix the second connecting ring 43 to the center rod 20.

[0023] A limiting groove 21 is formed on the surface of the center rod 20, and one end of the second locking screw 44 is movably inserted into the limiting groove 21.

[0024] When adapting the measuring holes to different planes, loosen the first locking screw 42 and the second locking screw 44, move the first connecting ring 41 or the second connecting ring 43 to the appropriate position, and then lock it. When moving the first connecting ring 41 or the second connecting ring 43, synchronous movement is achieved under the connection of multiple hinge rods 33 and the action of torsion springs. The hinge rods 33 can then contact the inner wall of the corresponding measuring hole to complete the centering alignment of the center rod 20.

[0025] The two ends of the hinge rod 33 are respectively rotatably inserted into the first connecting ring 41 and the second connecting ring 43. The position of the hinge rod 33 can be adjusted in two directions by adjusting the adjustment component. One is to adjust the overall position of the first connecting ring 41 and the second connecting ring 43 along the axial direction of the central rod 20. The other is to adjust the overall position of the first connecting ring 41 and the second connecting ring 43 along the axial direction of the central rod 20 and change the distance between them to flexibly change the initial included angle and unfolded length of the hinge rod 33, thereby adapting to measuring holes of different diameters and positions without replacing the core components, making the device more widely applicable.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A non-coplanar hole spacing detection device, characterized by, The utility model relates to a centering device for two non-coplanar measuring holes, comprising: a centering assembly and two center rods (20), the centering assembly comprises two moving cylinders (31), the two moving cylinders (31) are movably sleeved on the surfaces of the two center rods (20) respectively, rotating sleeves (32) are rotatably inserted into the top of the moving cylinders (31), the rotating sleeves (32) are threadedly sleeved on the surfaces of the center rods (20), a plurality of hinged rods (33) are arranged on the outer sides of the moving cylinders (31) in a circumferential direction, torsion springs are arranged between the hinged rods (33), and the two ends of the hinged rods (33) are connected with the moving cylinders (31) and the center rods (20) respectively; one of the center rods (20) is inserted into one of the measuring holes as a fixed rod, the other center rod (20) is inserted into the other measuring hole as a moving rod, the rotating sleeve (32) drives the moving cylinder (31) to move downwards, the plurality of hinged rods (33) are bent and folded, the hinged portions of the hinged rods (33) are in contact with the inner walls of the measuring holes to center the center rods (20), the center rods (20) are on the same straight line with the center lines of the measuring holes, and the axial distance between the two center rods (20) is measured to obtain the distance between the two non-coplanar measuring holes.

2. The non-coplanar pitch detection device of claim 1, wherein, The centering assembly further comprises two adjusting members for adjusting the positions between the plurality of hinged rods (33) and the center rods (20), the adjusting members comprise first connecting rings (41) and second connecting rings (43) which are sleeved on the surfaces of the corresponding moving cylinders (31) in sequence, and the two ends of the hinged rods (33) are rotatably inserted into the first connecting rings (41) and the second connecting rings (43) respectively.

3. The non-coplanar pitch detection device of claim 2, wherein, The surfaces of the first connecting rings (41) are provided with first locking screws (42) for frictionally and fixedly connecting the first connecting rings (41) with the moving cylinders (31).

4. The non-coplanar pitch detection device of claim 3, wherein, The surfaces of the second connecting rings (43) are provided with second locking screws (44) for frictionally and fixedly connecting the second connecting rings (43) with the center rods (20).

5. The non-coplanar pitch detection device of claim 4, wherein, The surfaces of the center rods (20) are provided with limiting grooves (21), and one end of the second locking screws (44) is movably inserted into the limiting grooves (21).

6. The non-coplanar pitch detection device of claim 1, wherein, The included angle between the hinged rods (33) ranges from 120° to 170°, and the surfaces of the hinged portions of the hinged rods (33) are arc-shaped.

7. The non-coplanar pitch detection device of claim 1, wherein, The surfaces of the rotating sleeves (32) are provided with anti-skid layers, and the anti-skid layers on the surfaces of the rotating sleeves (32) are rough.

8. The non-coplanar pitch detection device of claim 1, wherein, The utility model further comprises a vernier caliper (10), the two center rods (20) are connected with the fixed measuring jaw and the moving measuring jaw of the vernier caliper (10) respectively, and the axes of the two center rods (20) are on the same straight line with the fixed measuring jaw and the moving measuring jaw for measurement.

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