Pin hole surface roughness measuring device

Abstract

The utility model belongs to the technical field of measuring equipment, and particularly relates to a pin hole surface roughness measuring device which comprises a magnetic base, a connecting base is installed on the magnetic base, a first sliding rod is connected to the connecting base in a sliding mode, and a plurality of first round holes are formed in the first sliding rod. A locking knob used for penetrating through one of the first round holes is in threaded connection with the connecting base, a positioning mechanism coaxial with the pin hole is installed on the first sliding rod, a measuring frame is connected to the positioning mechanism in a sliding and rotating mode, and a surface roughness measuring instrument is clamped on the measuring frame. The positioning mechanism is provided with the driving mechanism used for driving the measuring frame to move forward spirally, so that a worker does not need to hold the surface roughness measuring instrument by hand after installation is completed, the measured value can be more accurate, the labor intensity of the worker can be reduced, and the working efficiency is improved. The spiral advancing surface roughness measuring instrument can also enlarge the detection range of the surface roughness, improves the working efficiency, and is suitable for long-time measurement.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring equipment, and in particular relates to a device for measuring the surface roughness of a pin hole. Background Art

[0002] When measuring the surface roughness of the spindle pin hole, the operator is required to hold the instrument and align it with the spindle pin hole. The instrument contacts touch the hole surface, and the front end of the instrument touches the shaft hole vertically to start measuring. During the measurement, the operator's hands and body cannot move and must bend over and hold on with their hands. The long-term measurement places high demands on the measurement personnel's body joints, and it is easy for the hands and body to loosen, resulting in measurement errors. Moreover, the more workpieces are measured, the larger the gap will be, reducing work efficiency and increasing labor intensity. Utility Model Content

[0003] In order to solve the above technical problems, the utility model further proposes a device for measuring the surface roughness of a pin hole.

[0004] The specific technical scheme of the utility model is as follows: a device for measuring the surface roughness of a pin hole, comprising a magnetic seat, a connecting seat is installed on the magnetic seat, a first slide rod is slidably connected to the connecting seat, a plurality of first circular holes are opened on the first slide rod, a locking knob for passing through one of the first circular holes is threadedly connected to the connecting seat, a positioning mechanism coaxial with the pin hole is installed on the first slide rod, a measuring frame is slidably and rotatably connected to the positioning mechanism, a surface roughness measuring instrument is clamped on the measuring frame, and a driving mechanism for driving the measuring frame to spirally advance is installed on the positioning mechanism.

[0005] Furthermore, the positioning mechanism includes a positioning sleeve, a positioning sleeve is installed on the first sliding rod, a positioning claw is rotatably connected to the positioning sleeve in a circular array, a positioning plate is slidably connected to the positioning sleeve, a connecting rod is hinged between the multiple positioning claws and the positioning plate, a threaded rod is rotatably connected to the positioning sleeve, and the positioning plate is threadedly connected to the threaded rod.

[0006] Furthermore, the measuring frame includes a support rod, the support rod is slidably and rotatably connected inside the threaded rod, a sliding disk is installed on the support rod, a second sliding rod is slidably connected to the sliding disk, a plurality of second circular holes are opened on the second sliding rod, a locking bolt for passing through one of the second circular holes is threadedly connected on the sliding disk, a clamping seat is installed on the second sliding rod, and the surface roughness measuring instrument is clamped on the clamping seat.

[0007] Furthermore, the driving mechanism includes a support frame, the support frame is installed on the positioning sleeve, the support frame is rotatably connected to a first gear, a slide groove is opened on the support rod, the first gear is slidably connected in the slide groove, the support rod is threadedly connected to the support frame, a motor is installed on the support frame, a second gear is installed on the motor output shaft, and the first gear is meshed with the second gear.

[0008] Furthermore, batteries for providing power to the motor are symmetrically mounted on the support frame.

[0009] Furthermore, a plurality of anti-slip grooves are provided on the threaded rod.

[0010] Furthermore, a rubber pad is installed on the positioning claw, and a plurality of grooves are formed on the rubber pad.

[0011] Beneficial effects:

[0012] The present application comprises a connecting seat installed on the magnetic seat, a first slide bar is slidably connected to the connecting seat, a plurality of first circular holes are opened on the first slide bar, a locking knob for passing through one of the first circular holes is threadedly connected to the connecting seat, a positioning mechanism coaxial with the pin hole is installed on the first slide bar, a measuring frame is slidably and rotatably connected to the positioning mechanism, a surface roughness measuring instrument is clamped on the measuring frame, a driving mechanism for driving the measuring frame to spirally advance is installed on the positioning mechanism, the magnetic seat is started to be magnetically attracted to the spindle plane, and then the positioning mechanism is moved to make the center of the positioning mechanism coincide with the center of the spindle pin hole, and the measuring frame is adjusted. The frame is installed so that the probe of the surface roughness measuring instrument can contact the surface of the pin hole, and then the locking knob is threaded through one of the first round holes into the connecting seat to further stabilize the positioning mechanism. Then the driving mechanism is started to make the measuring frame clamp the surface roughness measuring instrument and spirally advance to measure the inner surface of the pin hole. After the installation is completed, the staff does not need to hold the surface roughness measuring instrument by hand, which can make the measured value more accurate and reduce the labor intensity of the staff. The spirally advancing surface roughness measuring instrument can also expand the detection range of surface roughness, improve work efficiency, and is suitable for long-term measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the positioning mechanism of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the measuring frame of the utility model;

[0016] Figure 4 It is a schematic diagram of the driving mechanism of the utility model;

[0017] Figure 5 This is a schematic diagram of the support frame and the second gear structure of the utility model.

[0018] Description of the markings in the figure:

[0019] Magnetic base 1, connecting base 2, first slide bar 3, first circular hole 4, locking knob 5, positioning mechanism 6, positioning sleeve 61, positioning claw 62, positioning plate 63, connecting rod 64, threaded rod 65, anti-skid groove 66, rubber pad 67, measuring frame 7, support rod 71, sliding plate 72, second slide bar 73, second circular hole 74, locking bolt 75, clamping seat 76, surface roughness measuring instrument 8, driving mechanism 9, supporting frame 91, first gear 92, slide groove 93, motor 94, second gear 95, battery 96. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in 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.

[0021] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present invention.

[0022] Example 1: Combination Figure 1 to Figure 2A pin hole surface roughness measuring device is described, comprising a magnetic base 1, a connecting base 2 is installed on the magnetic base 1, a first slide bar 3 is slidably connected to the connecting base 2, a plurality of first circular holes 4 are opened on the first slide bar 3, a locking knob 5 for passing through one of the first circular holes 4 is threadedly connected to the connecting base 2, a positioning mechanism 6 coaxial with the pin hole is installed on the first slide bar 3, a measuring frame 7 is slidably and rotatably connected to the positioning mechanism 6, a surface roughness measuring instrument 8 is clamped on the measuring frame 7, and a driving mechanism 9 for driving the measuring frame 7 to spirally advance is installed on the positioning mechanism 6. The present application comprises a connecting seat 2 installed on a magnetic seat 1, a first slide bar 3 is slidably connected to the connecting seat 2, a plurality of first circular holes 4 are opened on the first slide bar 3, a locking knob 5 for passing through one of the first circular holes 4 is threadedly connected to the connecting seat 2, a positioning mechanism 6 coaxial with the pin hole is installed on the first slide bar 3, a measuring frame 7 is slidably and rotatably connected to the positioning mechanism 6, a surface roughness measuring instrument 8 is clamped on the measuring frame 7, a driving mechanism 9 for driving the measuring frame 7 to spirally advance is installed on the positioning mechanism 6, the magnetic seat 1 is started to be magnetically attracted to the spindle plane, and then the positioning mechanism 6 is moved to make the center of the positioning mechanism 6 coincide with the center of the spindle pin hole. The measuring frame 7 is adjusted to make the probe of the surface roughness measuring instrument 8 contact the surface of the pin hole, and then the locking knob 5 is threaded through one of the first circular holes 4 and connected into the connecting seat 2 to further stabilize the positioning mechanism 6. Then the driving mechanism 9 is started to make the measuring frame 7 clamp the surface roughness measuring instrument 8 and spirally advance to measure the inner surface of the pin hole. After the installation is completed, the staff does not need to hold the surface roughness measuring instrument 8 by hand, which can make the measured value more accurate and reduce the labor intensity of the staff. The spirally advanced surface roughness measuring instrument 8 can also expand the detection range of surface roughness, improve work efficiency, and is suitable for long-term measurement.

[0023] Example 2: Based on Example 1, Figure 2For explanation, the positioning mechanism 6 includes a positioning sleeve 61, the positioning sleeve 61 is installed on the first sliding rod 3, the positioning sleeve 61 is rotatably connected with positioning claws 62 in a circular array, the positioning sleeve 61 is slidably connected with a positioning plate 63, a connecting rod 64 is hinged between the multiple positioning claws 62 and the positioning plate 63, the positioning sleeve 61 is rotatably connected with a threaded rod 65, and the threaded rod 65 is threadedly connected with the positioning plate 63. The present application is provided with a positioning sleeve 61 on the first sliding rod 3, a positioning claw 62 is rotatably connected to the positioning sleeve 61 in a circular array, a positioning plate 63 is slidably connected to the positioning sleeve 61, a connecting rod 64 is hinged between the plurality of positioning claws 62 and the positioning plate 63, a threaded rod 65 is rotatably connected to the positioning sleeve 61, and the positioning plate 63 is threadedly connected to the threaded rod 65. The staff places the positioning claw 62 into the pin hole, and then rotates the threaded rod 65 so that the threaded rod 65 drives the positioning plate 63 to move toward the pin hole through the threaded connection, and the positioning plate 63 opens the positioning claw 62 through the connecting rod 64, so that the plurality of positioning claws 62 contact the inner wall of the pin hole, so that the threaded rod 65 is coaxial with the pin hole, and then the locking knob 5 is threadedly connected to the connecting seat 2 through one of the first circular holes 4, so as to further stabilize the positioning sleeve 61, thereby making the measured surface roughness of the pin hole more accurate, and the operation more convenient to improve the work efficiency.

[0024] Embodiment 3: Based on Embodiment 2, Figure 3 For explanation, the measuring frame 7 includes a support rod 71, the support rod 71 is slidably and rotatably connected inside the threaded rod 65, a sliding disk 72 is installed on the support rod 71, a second sliding rod 73 is slidably connected to the sliding disk 72, a plurality of second circular holes 74 are opened on the second sliding rod 73, a locking bolt 75 for passing through one of the second circular holes 74 is threadedly connected to the sliding disk 72, a clamping seat 76 is installed on the second sliding rod 73, and the surface roughness measuring instrument 8 is clamped on the clamping seat 76. The present application is connected with a support rod 71 by sliding and rotating in the threaded rod 65, and a sliding disk 72 is installed on the support rod 71, and a second sliding rod 73 is slidably connected to the sliding disk 72. A plurality of second circular holes 74 are opened on the second sliding rod 73, and a locking bolt 75 for passing through one of the second circular holes 74 is threadedly connected on the sliding disk 72. A clamping seat 76 is installed on the second sliding rod 73, and the surface roughness measuring instrument 8 is clamped on the clamping seat 76. The second sliding rod 73 is slid to make the probe of the surface roughness measuring instrument 8 clamped on the clamping seat 76 contact the inner wall of the pin hole. Then, the locking bolt 75 is threadedly connected to the sliding disk 72 through one of the second circular holes 74, so that the sliding disk 72 and the second sliding rod 73 remain relatively stationary, so as to be suitable for pin holes of different diameters. The clamping seat 76 is connected to the bottom plate by bolts on both sides, and the surface roughness measuring instrument 8 is clamped and tightened by the clamping force between the two side plates, so as to expand the range of measuring pin holes, be suitable for more pin hole specifications, and make the measurement result more accurate.

[0025] Embodiment 4: Based on Embodiment 1, Figure 4 and Figure 5 To explain, the driving mechanism 9 includes a support frame 91, the support frame 91 is installed on the positioning sleeve 61, the support frame 91 is rotatably connected to the first gear 92, the support rod 71 is provided with a slide groove 93, the first gear 92 is slidably connected in the slide groove 93, the support rod 71 is threadedly connected to the support frame 91, a motor 94 is installed on the support frame 91, a second gear 95 is installed on the output shaft of the motor 94, and the first gear 92 is meshed with the second gear 95. The present application comprises a support frame 91 installed on the positioning sleeve 61, the support frame 91 is rotatably connected with a first gear 92, a slide groove 93 is provided on the support rod 71, the first gear 92 is slidably connected in the slide groove 93, the support rod 71 is threadedly connected to the support frame 91, a motor 94 is installed on the support frame 91, a second gear 95 is installed on the output shaft of the motor 94, the first gear 92 is meshed with the second gear 95, the motor 94 is started to rotate forward, so that the motor 94 drives the first gear 92 to rotate forward, and then the first gear 92 drives the second gear 95 to rotate reversely through the meshing, and the second gear 95 drives the support rod 71 to rotate reversely through the slide groove 93, the support rod 71 is threadedly connected to the support frame 91, so that the support rod 71 spirally advances, and extends toward the inside of the pin hole while rotating reversely, so that the clamping seat 76 clamps the surface roughness measuring instrument 8 and spirally advances, thereby expanding the measuring area and making the measurement result more accurate.

[0026] Example 5: Based on Example 1, Figure 4 For explanation, the support frame 91 is symmetrically mounted with a battery 96 for providing power to the motor 94. In the present application, by symmetrically mounting the battery 96 for providing power to the motor 94 on the support frame 91, there is no need to provide an external power supply for the motor 94 during operation, thereby being applicable to more usage scenarios, being more convenient to operate, and improving work efficiency.

[0027] Example 6: Based on Example 1, Figure 4 For explanation, a plurality of anti-skid grooves 66 are provided on the threaded rod 65. The present application provides a plurality of anti-skid grooves 66 on the threaded rod 65, so that it is convenient for the staff to rotate the threaded rod 65, thereby reducing the labor intensity of the staff and improving the work efficiency.

[0028] Example 7: Based on Example 1, Figure 2For explanation, the positioning claw 62 is equipped with a rubber pad 67, and a plurality of grooves are provided on the rubber pad 67. The present application installs a rubber pad 67 on the positioning claw 62, and a plurality of grooves are provided on the rubber pad 67. The rubber pad 67 can reduce the wear of the positioning claw 62 on the inner wall of the pin hole, protect the workpiece, and the plurality of grooves provided on the rubber pad 67 can increase the friction between the rubber pad 67 and the positioning claw 62, so that the positioning claw 62 is more stable when it is opened, thereby improving the accuracy of measurement.

[0029] Working process:

[0030] When measuring the surface roughness of the inner wall of the pin hole, the support rod 71 is spread open by multiple positioning claws 62 to make the support rod 71 coaxial with the pin hole, and then the motor 94 is started to rotate forward, so that the motor 94 drives the first gear 92 to rotate forward, and then the first gear 92 drives the second gear 95 to rotate reversely through meshing, and the second gear 95 drives the support rod 71 to rotate reversely through the slide groove 93. The support rod 71 is threadedly connected to the support frame 91, so that the support rod 71 spirals forward and extends toward the inside of the pin hole while rotating reversely, so that the clamping seat 76 clamps the surface roughness measuring instrument 8 and spirals forward, thereby expanding the measuring area and making the measurement result more accurate.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A pin hole surface roughness measuring device, characterized in that: The invention comprises a magnetic seat (1), a connecting seat (2) is installed on the magnetic seat (1), a first slide bar (3) is slidably connected to the connecting seat (2), a plurality of first circular holes (4) are opened on the first slide bar (3), a locking knob (5) for passing through one of the first circular holes (4) is threadedly connected to the connecting seat (2), a positioning mechanism (6) coaxial with the pin hole is installed on the first slide bar (3), a measuring frame (7) is slidably and rotatably connected to the positioning mechanism (6), a surface roughness measuring instrument (8) is clamped on the measuring frame (7), and a driving mechanism (9) for driving the measuring frame (7) to spirally advance is installed on the positioning mechanism (6).

2. A pin hole surface roughness measuring device according to claim 1, characterized in that: The positioning mechanism (6) comprises a positioning sleeve (61), the first sliding rod (3) is mounted with a positioning sleeve (61), the positioning sleeve (61) is rotatably connected with positioning claws (62) in a circular array, the positioning sleeve (61) is slidably connected with a positioning plate (63), a connecting rod (64) is hinged between the plurality of positioning claws (62) and the positioning plate (63), the positioning sleeve (61) is rotatably connected with a threaded rod (65), and the threaded rod (65) is threadedly connected with the positioning plate (63).

3. A pin hole surface roughness measuring device according to claim 2, characterized in that: The measuring frame (7) comprises a support rod (71), the support rod (71) is slidably and rotatably connected inside the threaded rod (65), a sliding plate (72) is mounted on the support rod (71), a second sliding rod (73) is slidably connected to the sliding plate (72), a plurality of second circular holes (74) are formed on the second sliding rod (73), a locking bolt (75) for passing through one of the second circular holes (74) is threadedly connected to the sliding plate (72), a clamping seat (76) is mounted on the second sliding rod (73), and the surface roughness measuring instrument (8) is clamped on the clamping seat (76).

4. A pin hole surface roughness measuring device according to claim 3, characterized in that: The driving mechanism (9) comprises a support frame (91), the positioning sleeve (61) is provided with the support frame (91), a first gear (92) is rotatably connected to the support frame (91), a slide groove (93) is provided on the support rod (71), the first gear (92) is slidably connected in the slide groove (93), the support rod (71) is threadedly connected to the support frame (91), a motor (94) is installed on the support frame (91), a second gear (95) is installed on the output shaft of the motor (94), and the first gear (92) is meshed with the second gear (95).

5. A pin hole surface roughness measuring device according to claim 4, characterized in that: The support frame (91) is symmetrically mounted with batteries (96) for providing power to the motor (94).

6. A pin hole surface roughness measuring device according to claim 2, characterized in that: The threaded rod (65) is provided with a plurality of anti-slip grooves (66).

7. A pin hole surface roughness measuring device according to claim 2, characterized in that: A rubber pad (67) is installed on the positioning claw (62), and a plurality of grooves are formed on the rubber pad (67).

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