A local line profile detection device

Abstract

The present invention relates to a local line profile detection device, which includes a base, a fixed vertical plate, a positioning plate, a standard block, a pressure block, an elastic reset member, a swing rod and a micrometer; the fixed vertical plate is fixed on the base; the positioning plate is fixedly connected to the fixed vertical plate, and a central axis is provided on the positioning plate; the swing rod is rotatably connected to the central axis; the standard block is fixed on the positioning plate; the pressure block is slidably arranged on the positioning plate; the elastic reset member is fixed on the positioning plate, and is used to provide a reset force for the pressure block to move toward the standard block; the micrometer is fixed on the swing rod, so that it can swing with the swing rod; during detection, the standard block and the pressure block cooperate to clamp the workpiece to be measured, so that the outer cylindrical surface of the workpiece to be measured fits the standard surface of the standard block, and the detection head of the micrometer is against the surface to be measured of the workpiece to be measured. The local line profile detection device of the present invention has a simple structure, is easy to operate, will not affect the workpiece to be measured, has high accuracy, and can be used for online detection.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a local line profile detection device. Background Art

[0002] The connector is one of the important parts in the crankshaft pulley assembly of the automobile engine. It is a thin-walled stretched part. Due to functional requirements, two symmetrical grooves are arranged on its outer circle. The width from the upper side of the groove to the end of the web is only 2mm. When working, the outer circle of the connector is pressed into the inner hole of the crankshaft pulley to seal the oil inside the cavity. The local line profile within the 2mm width of the outer circle on the upper side of the groove is affected by the groove stretching forming. It is the most difficult to ensure its accuracy requirements. It is the most important factor affecting whether the oil leaks. If the local line profile exceeds 0.1mm, leakage may occur, and online detection is required.

[0003] Since the connector is a thin-walled tensile part, it was clamped and tested using traditional three-jaw, spring chuck and other methods. It was found that the clamping force would deform the initial shape of the product, thereby affecting the accuracy of local line contour detection.

[0004] In order to improve accuracy, some people use three-coordinate measuring equipment for inspection. However, the use environment of three-coordinate measuring equipment is high, the operation is complicated and requires professional inspection personnel. Therefore, it is impossible to inspect the connectors on the production line, which is inefficient and costly. Summary of the invention

[0005] Therefore, it is necessary to provide a device that can be used for online local line profile detection to solve the problem of low accuracy of online detection of local line profile of existing thin-walled tensile parts.

[0006] To achieve the above-mentioned purpose, the inventor provides a local line contour detection device, including a base, a fixed vertical plate, a positioning plate, a standard block, a pressure block, an elastic reset member, a rocker arm and a micrometer; the fixed vertical plate is fixed on the base; the positioning plate is fixedly connected to the fixed vertical plate, and a central axis is provided on the positioning plate; the rocker arm is rotatably connected to the central axis; the standard block is fixed to the positioning plate; the pressure block is slidably arranged on the positioning plate; the elastic reset member is fixed on the positioning plate, and is used to provide a reset force for the pressure block to move toward the standard block; the micrometer is fixed to the rocker arm so that it can swing with the rocker arm; during detection, the standard block and the pressure block cooperate to clamp the workpiece to be measured, so that the outer cylindrical surface of the workpiece to be measured fits the standard surface of the standard block, and the detection head of the micrometer is against the measured surface of the workpiece to be measured.

[0007] Preferably, a guide plate is further provided, which is detachably fixed to the positioning plate and used to fit the workpiece to be measured; a recess for accommodating the pressing block is provided on the guide plate, and the recess has enough space for the pressing block to move up and down.

[0008] Preferably, the pressing block is fixedly connected to a slider, a slide groove (31) is provided on the positioning plate, and the slider is slidably and detachably installed in the slide groove (31); it also includes a control member, one end of which is fixedly connected to the slider, and the other end is located above the base for external force control to drive the slider to move.

[0009] Preferably, the control member includes a connecting rod and a pressure rod, one end of the connecting rod is fixedly connected to the slider, and the other end is a certain distance away from the base; the pressure rod is located in the controllable area above the base, and is connected to the other end of the connecting rod to form a linkage with the connecting rod, and pressing down the pressure rod can drive the connecting rod to move downward.

[0010] Preferably, a first limiting convex edge is provided at one end of the connecting rod, and a first through hole and a second through hole are provided on the pressure rod; the limiting rod is passed through the first through hole; the operating member also includes a limiting rod, the connecting rod is provided in the second through hole, one end of the limiting rod is fixedly connected to the base, and the other end is provided with a second limiting convex edge; the lower part of the pressure rod abuts against the first limiting convex edge, and the upper part of the pressure rod abuts against the second limiting convex edge to form a pressing lever.

[0011] Preferably, the elastic return member includes a spring seat and a compression spring; the spring seat is fixed on the positioning plate, and the compression spring is pressed between the slider and the spring seat; the connecting rod passes through the spring seat and is connected to the slider, a first spring mounting groove is provided on the spring seat, and a second spring mounting groove is provided on the slider, and two ends of the compression spring are respectively embedded in the first spring mounting groove and the second spring mounting groove.

[0012] Preferably, the rocker arm is rotatably connected to the central axis via a rotating connecting piece, and the rotating connecting piece includes a bearing and a rotating sleeve; the bearing sleeve is arranged on the central axis, the bearing outer sleeve is provided with the rotating sleeve, and the rocker arm is fixedly sleeved on the rotating sleeve; the rotating sleeve is fixedly connected to a rotating handle, and the rocker arm is rotated by rotating the rotating handle, thereby driving the micrometer to rotate; the standard block is fixedly connected to one end of an insert, and a mounting hole is opened on the positioning plate, and the other end of the insert is detachably fixedly embedded in the mounting hole.

[0013] Preferably, the upper end of the rocker arm is connected to the micrometer, the middle part is sleeved on the rotating sleeve, and the lower end is provided with a rotation limiting part; the fixed vertical plate is provided with a limiting groove, the rotation limiting part is located in the limiting groove, and the groove wall of the limiting groove forms a limit for the rotation limiting part.

[0014] Preferably, a height adjustment block is fixedly connected to the upper end of the rocker arm, and the height adjustment block can be adjusted up and down to a fixed position relative to the rocker arm; a fixed seat is connected to the height adjustment block, and the fixed seat can be adjusted forward and backward to a fixed position relative to the height adjustment block; the micrometer is fixed on the fixed seat.

[0015] Preferably, the standard surface of the standard block is an inner concave arc surface, and the top abutting surface of the pressure block is an outer convex arc surface; during detection, the standard block is arranged above the groove of the workpiece to be tested, and the contact force points between the standard block and the outer cylindrical surface of the workpiece to be tested are located on both sides of the groove of the workpiece to be tested, and the pressure block abuts against the inner surface of the groove of the workpiece to be tested, and the contact force point between the pressure block and the inner surface of the groove of the workpiece to be tested is located in the middle of the inner surface of the groove of the workpiece to be tested.

[0016] The local line profile detection device of the present invention has a simple structure, is easy to operate, has no influence on the workpiece to be detected, has high accuracy, and can be used for online detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0018] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present application;

[0019] Figure 2 An explosion of one embodiment of the present application Figure 1 ;

[0020] Figure 3 An explosion of one embodiment of the present application Figure 2 ;

[0021] Figure 4 This is a cross-sectional schematic diagram of an embodiment of the present application;

[0022] Figure 5 This is a partial cross-sectional schematic diagram of an embodiment of the present application.

[0023] Description of reference numerals:

[0024] 10. Base; 20. Fixed vertical plate; 21. Limiting groove; 30. Positioning plate; 31. Slide groove; 32. Center axis; 40. Standard block; 41. Insert; 50. Pressing block; 51. Sliding block; 60. Elastic reset member; 61. Spring seat; 62. Compression spring; 70. Rocker; 71. Rotation limiting part; 80. Micrometer; 81. Height adjustment block; 82. Fixed seat; 90. Guide plate; 91. Giving groove; 100. Control member; 101. Pressing rod; 102. Connecting rod; 103. Limiting rod; 110. Rotating connecting member; 111. Bearing; 112. Rotating sleeve; 120. Handle; A. Workpiece to be measured; a1. Groove. DETAILED DESCRIPTION

[0025] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments and accompanying drawings.

[0026] In the description of this application, unless otherwise clearly specified and limited, the terms "first", "second", and "first" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected", "fixed", etc. should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0027] In the description of this specification, it should be understood that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limitations on the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0028] The present invention provides a local line profile detection device, please refer to Figures 1 to 5 :

[0029] A local line profile detection device comprises a base 10, a fixed vertical plate 20, a positioning plate 30, a standard block 40, a pressure block 50, an elastic reset member 60, a swing rod 70 and a micrometer 80; the fixed vertical plate 20 is fixedly arranged on the base 10; the positioning plate 30 is fixedly connected to the fixed vertical plate 20, and a central axis 32 is arranged on the positioning plate 30; the swing rod 70 is rotatably connected to the central axis 32; the standard block 40 is detachably fixed to the positioning plate 30; the pressure block 50 can slide and It is detachably arranged on the positioning plate 30; the elastic reset member 60 is fixed on the positioning plate 30, and is used to provide a reset force for the pressure block 50 to move toward the standard block 40; the micrometer 80 is fixedly connected to the upper end of the swing rod 70 so that it can swing with the swing rod 70; during testing, the standard block 40 and the pressure block 50 cooperate to clamp the workpiece A to be tested, so that the outer cylindrical surface of the workpiece A to be tested fits the standard surface of the standard block 40, and the detection head of the micrometer 80 is against the test surface of the workpiece A to be tested.

[0030] The fixed vertical plate 20 of this embodiment is fastened and erected on the base 10 by means of fixing screws, and the positioning plate 30 is fastened and locked on the left side of the fixed vertical plate 20 by means of screws. One end of the central shaft 32 of this embodiment is in the shape of a disk and is fastened to the positioning plate by means of screws, and the other end of the central shaft 32 passes through the fixed vertical plate 20 and is located on the right side of the fixed vertical plate 20. The micrometer 80 of this embodiment uses a liquid crystal display micrometer 80 of the ID-F-ABSOLUTE-543 series.

[0031] Specifically, the local line contour detection device of this embodiment is also provided with a guide plate 90, which is detachably fixed to the positioning plate 30 and is used to fit the workpiece A to be measured; a clearance groove 91 for accommodating the pressure block 50 is opened on the guide plate 90, and the clearance groove 91 has enough space for the pressure block 50 to move up and down.

[0032] The guide plate 90 of the present embodiment is in the shape of a circular disk, and its outer contour matches the inner contour of the wall to be measured of the workpiece A to be measured. The guide plate 90 is detachably fixedly connected to the positioning plate 30 by screws.

[0033] Specifically, the pressing block 50 of this embodiment is detachably fixedly connected to a slider 51, a sliding groove 31 is provided on the positioning plate 30, and the slider 51 can be slidably installed in the sliding groove 31; it also includes a control member 100, one end of the control member 100 is fixedly connected to the slider 51, and the other end is located above the base 10 for external force control to drive the slider 51 to move.

[0034] In this embodiment, a T-shaped slot is provided in the middle of the positioning plate 30 from top to bottom, and the slider 51 is a T-shaped block. The slider 51 has a mounting hole, one end of the pressing block 50 passes through the mounting hole, and one end of the pressing block 50 is fixed in the mounting hole of the slider 51 by screws.

[0035] Specifically, the control member 100 of this embodiment includes a connecting rod 102 and a pressure rod 101. One end of the connecting rod 102 is fixedly connected to the slider 51, and the other end is a certain distance away from the base 10. The pressure rod 101 is located in the controllable area above the base 10, and is connected to the other end of the connecting rod 102 to form a linkage with the connecting rod 102. Pressing down the pressure rod 101 can drive the connecting rod 102 to move downward.

[0036] Specifically, in this embodiment, a first limiting convex edge is provided at one end of the connecting rod 102, and a first through hole and a second through hole are provided on the pressure rod 101; the limiting rod 103 is passed through the first through hole; the operating member 100 also includes a limiting rod 103, the connecting rod 102 is provided in the second through hole, one end of the limiting rod 103 is fixedly connected to the base 10, and a second limiting convex edge is provided at the other end; the lower part of the pressure rod 101 abuts against the first limiting convex edge, and the upper part of the pressure rod 101 abuts against the second limiting convex edge to form a pressing lever.

[0037] Specifically, the elastic return member 60 of this embodiment includes a spring seat 61 and a compression spring 62; the spring seat 61 is fixed on the positioning plate 30, and the compression spring 62 is pressed between the pressure block 50 and the spring seat 61; the connecting rod 102 passes through the spring seat 61 and is connected to the slider 51, a first spring mounting groove is provided on the spring seat 61, and a second spring mounting groove is provided on the slider 51, and both ends of the compression spring 62 are respectively installed in the first spring mounting groove and the second spring mounting groove.

[0038] The spring seat 61 of this embodiment is installed in the slide groove 31 below the positioning plate 30 and fixed by screws; the connecting rod 102 is a long screw rod, the nut of the screw rod forms a first limiting convex edge, and one end of the screw rod is screwed to the slider 51. The limiting rod 103 is a short screw rod, one end of the screw rod is screwed to the base 10, and the nut of the screw rod forms a second limiting convex edge.

[0039] Specifically, the rocker arm 70 of this embodiment is rotatably connected to the central shaft 32 via a rotating connector 110 , and the rotating connector 110 includes a bearing 111 and a rotating sleeve 112 ; the bearing 111 is sleeved on the central shaft 32 , the outer sleeve of the bearing 111 is provided with the rotating sleeve 112 , and the rocker arm 70 is fixedly sleeved on the rotating sleeve 112 .

[0040] Specifically, the upper end of the rocker arm 70 of the present embodiment is connected to the micrometer 80, the middle part is sleeved on the rotating sleeve 112, and the lower end is provided with a rotation limiting portion 71; the fixed vertical plate 20 is provided with a limiting groove 21, the rotation limiting portion 71 is located in the limiting groove 21, and the groove wall of the limiting groove 21 forms a limit for the rotation limiting portion 71.

[0041] The upper end of the swing rod 70 of this embodiment is a rectangular block, and the middle of the swing rod 70 of this embodiment is a ring that is disconnected in the middle. The two ends of the ring are locked by screws to be fastened to the rotating sleeve 112. The rotation limiting part 71 is small at the top and large at the bottom.

[0042] Specifically, in the present embodiment, the rotating sleeve 112 is fixedly connected to a rotating handle 120, and the rocker arm 70 is rotated by rotating the rotating handle 120, thereby driving the micrometer 80 to rotate; the standard block 40 is fixedly connected to one end of an insert 41, and a mounting hole is opened on the positioning plate 30, and the other end of the insert 41 is detachably fixedly installed in the mounting hole.

[0043] Specifically, a height adjustment block 81 is fixedly connected to the upper end of the swing rod 70 of this embodiment, and the height adjustment block 81 can be adjusted up and down to a fixed position relative to the swing rod 70; a fixed seat 82 is connected to the height adjustment block 81, and the fixed seat 82 can be adjusted forward and backward to a fixed position relative to the height adjustment block 81; the micrometer 80 is fixed on the fixed seat 82.

[0044] The height adjustment block 81 of this embodiment is provided with a square longitudinal adjustment slot and an adjustment slot that match the rectangular block at the upper end of the swing rod 70, and a screw passes through the adjustment slot to fix the height adjustment block 81 on the swing rod 70. The upper end of the height adjustment block 81 is also provided with a trapezoidal transverse adjustment slot and two symmetrically arranged adjustment screw holes, and a fixing seat 82 is installed in the transverse adjustment slot. The fixing seat 82 is also provided with an adjustment screw, and the adjustment screw is pressed against the height adjustment block 81. The screw passes through the adjustment screw hole to fasten the fixing seat 82 to the height adjustment block 81. Loosen the screw and rotate the adjustment screw to adjust the front and rear position of the fixing seat 82.

[0045] Specifically, the standard surface of the standard block 40 of this embodiment is an inner concave arc surface, and the top surface of the pressure block 50 is an outer convex arc surface; during detection, the standard block 40 is arranged above the groove a1 of the workpiece A to be detected, and the contact force points between the standard block 40 and the outer cylindrical surface of the workpiece A to be detected are located on both sides of the groove a1 of the workpiece A to be detected, and the pressure block 50 is pressed against the inner surface of the groove a1 of the workpiece A to be detected, and the contact force points between the pressure block 50 and the inner surface of the groove a1 of the workpiece A to be detected are located in the middle of the inner surface of the groove a1 of the workpiece A to be detected. Three-point positioning is achieved, and the force points are all located at the position with the highest strength of the workpiece A to be detected, which is not easy to deform and has high detection accuracy.

[0046] During testing, the pressure rod 101 is pressed down to drive the pressure block 50 to move downward to make enough space. At the same time, the workpiece A to be tested is placed on the guide plate 90 and the position is adjusted so that the surface to be tested is located between the pressure block 50 and the standard block 40. The pressure rod 101 is released, and the pressure block 50 is moved up to clamp the workpiece A to be tested. The detection head of the micrometer 80 slightly presses against the surface to be tested of the workpiece A to be tested. The handle 120 is rotated to drive the swing rod 70 to rotate, and the detection head of the micrometer 80 slides along the surface to be tested of the workpiece A to measure the curvature of the surface to be tested.

[0047] The local line profile detection device of the present invention has a simple structure, is easy to operate, does not affect the workpiece to be detected, has high accuracy, and can be used for online detection. When detecting connectors of different sizes, only the corresponding guide plate, pressure block and standard block need to be replaced, so that a multi-variety shared detection platform can be realized with strong interchangeability.

[0048] It should be noted that, although the above embodiments have been described in this article, the scope of patent protection of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures or equivalent process changes made using the contents of the present specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the patent of the present invention.

Claims

1. A local line profile detection device, characterized in that: The invention comprises a base (10), a fixed vertical plate (20), a positioning plate (30), a standard block (40), a pressure block (50), an elastic reset member (60), a swing rod (70) and a micrometer (80); the fixed vertical plate (20) is fixedly mounted on the base (10); the positioning plate (30) is fixedly connected to the fixed vertical plate (20); a central axis (32) is arranged on the positioning plate (30); the swing rod (70) is rotatably connected to the central axis (32); the standard block (40) is fixedly connected to the positioning plate (30); the pressure block (50) is slidably mounted on the positioning plate (30); The standard block (40) is placed on the positioning plate (30); the elastic reset member (60) is fixed on the positioning plate (30) and is used to provide a reset force for the pressure block (50) to move toward the standard block (40); the micrometer (80) is fixed on the swing rod (70) so as to swing with the swing rod (70); during detection, the standard block (40) and the pressure block (50) cooperate to clamp the workpiece to be tested, so that the outer cylindrical surface of the workpiece to be tested fits the standard surface of the standard block (40), and the detection head of the micrometer (80) is against the surface to be tested of the workpiece to be tested; A guide plate (90) is also provided, and the guide plate (90) is detachably fixed to the positioning plate (30) and is used to fit the workpiece to be measured; a clearance groove (91) for accommodating the pressing block (50) is provided on the guide plate (90), and the clearance groove (91) has sufficient space for the pressing block (50) to move up and down; The pressing block (50) is fixedly connected to a slider (51), a slide groove (31) is provided on the positioning plate (30), and the slider (51) is slidably and detachably installed in the slide groove (31); and further comprises a control member (100), one end of which is fixedly connected to the slider (51), and the other end is located above the base (10) for external force control to drive the slider (51) to move; The swing rod (70) is rotatably connected to the central shaft (32) via a rotating connecting member (110), and the rotating connecting member (110) comprises a bearing (111) and a rotating sleeve (112); the bearing (111) is sleeved on the central shaft (32), the outer sleeve of the bearing (111) is provided with the rotating sleeve (112), and the swing rod (70) is fixedly sleeved on the rotating sleeve (112); the rotating sleeve (112) is fixedly connected to a rotating handle (120), and the swing rod (70) is driven to rotate by rotating the rotating handle (120), thereby driving the micrometer (80) to rotate; the standard block (40) is fixedly connected to one end of an insert (41), and a mounting hole is opened on the positioning plate (30), and the other end of the insert (41) is detachably fixedly embedded in the mounting hole; The standard surface of the standard block (40) is an inner concave arc surface, and the abutting surface of the pressure block (50) is an outer convex arc surface; during detection, the standard block (40) is arranged above the groove of the workpiece to be tested, and the contact force points between the standard block (40) and the outer cylindrical surface of the workpiece to be tested are located on both sides of the groove of the workpiece to be tested, and the pressure block (50) abuts against the inner surface of the groove of the workpiece to be tested, and the contact force points between the pressure block (50) and the inner surface of the groove of the workpiece to be tested are located in the middle of the inner surface of the groove of the workpiece to be tested.

2. A local line profile detection device according to claim 1, characterized in that: The control member (100) comprises a connecting rod (102) and a pressure rod (101); one end of the connecting rod (102) is fixedly connected to the slider (51), and the other end is a certain distance away from the base (10); the pressure rod (101) is located in a controllable area above the base (10), and is connected to the other end of the connecting rod (102) to form a linkage with the connecting rod (102); pressing down the pressure rod (101) can drive the connecting rod (102) to move downward.

3. A local line profile detection device according to claim 2, characterized in that: A first limiting convex edge is provided at one end of the connecting rod (102), and a first through hole and a second through hole are provided on the pressure rod (101); the operating member (100) also includes a limiting rod (103), and the limiting rod (103) is passed through the first through hole; the connecting rod (102) is arranged in the second through hole, one end of the limiting rod (103) is fixedly connected to the base (10), and the other end is provided with a second limiting convex edge; the lower part of the pressure rod (101) abuts against the first limiting convex edge, and the upper part of the pressure rod (101) abuts against the second limiting convex edge to form a pressing lever.

4. A local line profile detection device according to claim 2, characterized in that: The elastic return member (60) comprises a spring seat (61) and a compression spring (62); the spring seat (61) is fixed on the positioning plate (30), and the compression spring (62) is pressed between the slider (51) and the spring seat (61); the connecting rod (102) passes through the spring seat (61) and is connected to the slider (51); a first spring mounting groove is provided on the spring seat (61), and a second spring mounting groove is provided on the slider (51); two ends of the compression spring (62) are respectively embedded in the first spring mounting groove and the second spring mounting groove.

5. A local line profile detection device according to claim 1, characterized in that: The upper end of the swing rod (70) is connected to the micrometer (80), the middle part is sleeved on the rotating sleeve (112), and the lower end is provided with a rotation limiting portion (71); the fixed vertical plate (20) is provided with a limiting groove (21), the rotation limiting portion (71) is located in the limiting groove (21), and the groove wall of the limiting groove (21) forms a limit for the rotation limiting portion (71).

6. A local line profile detection device according to claim 5, characterized in that: A height adjustment block (81) is fixedly connected to the upper end of the swing rod (70), and the height adjustment block (81) can be adjusted up and down to a fixed position relative to the swing rod (70); a fixing seat (82) is connected to the height adjustment block (81), and the fixing seat (82) can be adjusted forward and backward to a fixed position relative to the height adjustment block (81); and the dial gauge (80) is fixedly arranged on the fixing seat (82).

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