CN217110774U

CN217110774U - Local line profile tolerance detection device

Info

Publication number: CN217110774U
Application number: CN202220623087.8U
Authority: CN
Inventors: 王建中; 罗广梅; 江永彬; 罗潮达
Original assignee: Xiamen Jiexun Automobile Parts Co ltd
Current assignee: Xiamen Jiexun Automobile Parts Co ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-08-02
Anticipated expiration: 2032-03-21

Abstract

The utility model relates to a local line profile tolerance detection device, which comprises a base, a fixed vertical plate, a positioning plate, a standard block, a material pressing block, an elastic reset piece, a swing rod and a dial indicator; the fixed vertical plate is fixedly arranged on the base; the positioning disc is fixedly connected with the fixed vertical plate, and a central shaft is arranged on the positioning disc; the swing rod is rotationally connected with the central shaft; the standard block is fixedly connected to the positioning plate; the material pressing block is arranged on the positioning plate in a sliding manner; the elastic resetting piece is fixedly arranged on the positioning plate and used for providing a resetting force for the material pressing block to move towards the standard block; the dial indicator is fixedly connected to the swing rod and can swing along with the swing rod; during detection, the standard block and the pressing block are matched together to clamp the workpiece to be detected, so that the outer circular surface of the workpiece to be detected is attached to the standard surface of the standard block, and the detection head of the dial indicator abuts against the surface to be detected of the workpiece to be detected. The utility model discloses a local line profile tolerance detection device, simple structure, convenient operation can not exert an influence to the work piece that awaits measuring, and the accuracy is high, can be used to the online detection.

Description

Local line profile tolerance detection device

Technical Field

The utility model relates to a check out test set technical field, in particular to local line profile tolerance detection device.

Background

The connecting piece is one of important parts in automobile engine bent axle band pulley subassembly, belongs to thin wall tensile piece, because of the functional requirement, has arranged two symmetrical recesses on its excircle, and the recess upside only has 2mm width to the web end, and the hole of this connecting piece excircle facial features impressed bent axle band pulley during operation plays sealed effect to the inside fluid of die cavity. The local line profile tolerance of the excircle 2mm width within range of recess upside receives the recess stretch forming influence, hardly guarantees its required precision, is the leading factor that influences whether fluid leaks, and the seepage phenomenon just can appear in local line profile tolerance exceedes 0.1mm, requires must on-line measuring.

Because this connecting piece is the tensile piece of thin wall, detects through mode clamping such as traditional three-jaw, spring chuck, all finds that clamping-force can produce the deformation to product initial form, and then influences the accuracy that local line profile tolerance detected.

In order to improve the accuracy, some coordinate detection devices are used for detecting, but the coordinate detection devices are high in service environment requirements and complex in operation and control, professional detection personnel need to be equipped, so that the connecting pieces cannot be detected on a production line, the efficiency is low, and the cost is high.

SUMMERY OF THE UTILITY MODEL

Therefore, a device for detecting the local line profile degree on line needs to be provided, and the device is used for solving the problem that the accuracy of the local line profile degree on line detection of the existing thin-wall type stretching part is low.

In order to achieve the purpose, the inventor provides a device for detecting the local line profile degree, which comprises a base, a fixed vertical plate, a positioning plate, a standard block, a pressing block, an elastic resetting piece, a swing rod and a dial indicator, wherein the fixed vertical plate is arranged on the base; the fixed vertical plate is fixedly arranged on the base; the positioning disc is fixedly connected with the fixed vertical plate, and a central shaft is arranged on the positioning disc; the swing rod is rotationally connected with the central shaft; the standard block is fixedly connected to the positioning plate; the material pressing block is arranged on the positioning plate in a sliding manner; the elastic resetting piece is fixedly arranged on the positioning plate and used for providing a resetting force for the material pressing block to move towards the standard block; the dial indicator is fixedly connected to the swing rod and can swing along with the swing rod; during detection, the standard block and the pressing block are matched together to clamp a workpiece to be detected, so that the outer circular surface of the workpiece to be detected is attached to the standard surface of the standard block, and the detection head of the dial indicator abuts against the surface to be detected of the workpiece to be detected.

Preferably, the device is further provided with a guide disc, and the guide disc is detachably and fixedly connected to the positioning disc and used for sleeving the workpiece to be detected; the guide disc is provided with a yielding groove for containing the material pressing blocks, and the yielding groove has enough space for the material pressing blocks to move up and down.

Preferably, the material pressing block is fixedly connected with a sliding block, a sliding groove (31) is formed in the positioning disc, and the sliding block is slidably and detachably embedded in the sliding groove (31); the sliding block is fixedly connected with the base, and the other end of the sliding block is located above the base and is driven by external force to move.

Preferably, the control piece comprises a connecting rod and a pressure rod, one end of the connecting rod is fixedly connected with the sliding block, and the other end of the connecting rod is away from the base by a certain distance; the pressing rod is positioned in the controllable area above the base and is connected to the other end of the connecting rod to form linkage with the connecting rod, and the pressing rod is pressed downwards to drive the connecting rod to move downwards.

Preferably, one end of the connecting rod is provided with a first limiting convex edge, and the pressure lever is provided with a first through hole and a second through hole; the control piece further comprises a limiting rod, and the limiting rod penetrates through the first through hole; the connecting rod is arranged in the second through hole; one end of the limiting rod is fixedly connected with the base, and the other end of the limiting rod is provided with a second limiting convex edge; the lower part of the pressure lever is abutted against the first limiting convex edge, and the upper part of the pressure lever is abutted against the second limiting convex edge to form a pressure lever.

Preferably, the elastic reset piece comprises a spring seat and a compression spring; the spring seat is fixedly arranged on the positioning disc, and the compression spring abuts against the space between the sliding block and the spring seat; the connecting rod penetrates through the spring seat to be connected with the sliding block, a first spring mounting groove is formed in the spring seat, a second spring mounting groove is formed in the sliding block, and two ends of the compression spring are embedded in the first spring mounting groove and the second spring mounting groove respectively.

Preferably, the swing rod is rotatably connected with the central shaft through a rotating connecting piece, and the rotating connecting piece comprises a bearing and a rotating sleeve; the bearing is sleeved on the central shaft, the rotating sleeve is sleeved outside the bearing, and the swing rod is fixedly sleeved on the rotating sleeve; the rotating sleeve is fixedly connected with a rotating handle, and the rotating handle is rotated to drive the oscillating bar to rotate so as to drive the dial indicator to rotate; the standard block is fixedly connected with one end of an insert, the positioning disc is provided with a mounting hole, and the other end of the insert is detachably and fixedly embedded in the mounting hole.

Preferably, the upper end of the swing rod is connected with the dial indicator, the middle part of the swing rod is sleeved on the rotary sleeve, and the lower end of the swing rod is provided with a rotary limiting part; the fixed vertical plate is provided with a limiting groove, the rotating limiting part is positioned in the limiting groove, and the groove wall of the limiting groove limits the rotating limiting part.

Preferably, the upper end of the swing rod is fixedly connected with a height adjusting block, and the height adjusting block can adjust a fixed position up and down relative to the swing rod; the height adjusting block is connected with a fixed seat, and the fixed seat can be adjusted to a fixed position relative to the height adjusting block in a front-back mode; the dial indicator is fixedly arranged on the fixed seat.

Preferably, the standard surface of the standard block is an inner concave cambered surface, and the abutting surface of the pressing block is an outer convex cambered surface; during detection, the standard block is arranged above the groove of the workpiece to be detected in a spanning mode, the contact stress point of the standard block and the outer circular surface of the workpiece to be detected is located on two sides of the groove of the workpiece to be detected, the pressing block abuts against the inner surface of the groove of the workpiece to be detected, and the contact stress point of the pressing block and the inner surface of the groove of the workpiece to be detected is located in the middle of the inner surface of the groove of the workpiece to be detected.

The utility model discloses a local line profile tolerance detection device, simple structure, convenient operation can not exert an influence to the work piece that awaits measuring, and the accuracy is high, can be used to the online detection.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any creative effort.

FIG. 1 is a perspective view of one embodiment of the present application;

FIG. 2 is an exploded view of one embodiment of the present application;

FIG. 3 is an exploded view of an embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of one embodiment of the present application;

FIG. 5 is a schematic partial cross-sectional view of one embodiment of the present application.

Description of the reference numerals:

10. a base; 20. fixing the vertical plate; 21. a limiting groove; 30. positioning a plate; 31. a chute; 32. a central shaft; 40. a standard block; 41. an insert; 50. pressing blocks; 51. a slider; 60. an elastic reset member; 61. a spring seat; 62. a compression spring; 70. a swing rod; 71. a rotation limiting part; 80. a dial indicator; 81. a height adjusting block; 82. a fixed seat; 90. a guide plate; 91. a yielding groove; 100. an operating control member; 101. a pressure lever; 102. a connecting rod; 103. a limiting rod; 110. rotating the connecting piece; 111. a bearing; 112. rotating the sleeve; 120. a handle; A. a workpiece to be measured; a1, groove.

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless otherwise specified or indicated; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present embodiment can be understood by those of ordinary skill in the art according to specific situations.

In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described with reference to the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

The utility model provides a local line profile tolerance detection device please refer to fig. 1 to 5:

a local line profile tolerance detection device comprises a base 10, a fixed vertical plate 20, a positioning plate 30, a standard block 40, a material pressing block 50, an elastic resetting piece 60, a swing rod 70 and a dial indicator 80; the fixed vertical plate 20 is fixedly arranged on the base 10; the positioning disc 30 is fixedly connected with the fixed vertical plate 20, and a central shaft 32 is arranged on the positioning disc 30; the swing rod 70 is rotatably connected with the central shaft 32; the standard block 40 is detachably and fixedly connected to the positioning plate 30; the material pressing block 50 is slidably and detachably arranged on the positioning plate 30; the elastic resetting piece 60 is fixedly arranged on the positioning plate 30 and used for providing resetting force for the material pressing block 50 to move towards the standard block 40; the dial indicator 80 is fixedly connected to the upper end of the swing rod 70 and can swing along with the swing rod 70; during detection, the standard block 40 and the pressing block 50 are matched together to clamp the workpiece a to be detected, so that the outer circular surface of the workpiece a to be detected is attached to the standard surface of the standard block 40, and the detection head of the dial indicator 80 abuts against the surface of the workpiece a to be detected.

The fixed vertical plate 20 of the embodiment is locked and erected on the base 10 by using a fixing screw, and the positioning plate 30 is fixed and locked on the left side of the fixed vertical plate 20 by using a screw. One end of the central shaft 32 of this embodiment is disc-shaped and is fastened on the positioning plate by a screw, 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 dial gauge 80 of this embodiment uses an ID-F-ABSOLUTE-543 series liquid crystal display dial gauge 80.

Specifically, the local line profile degree detection device of the embodiment is further provided with a guide disc 90, and the guide disc 90 is detachably and fixedly connected to the positioning disc 30 and used for sleeving the workpiece a to be detected; the guide disc 90 is provided with a yielding groove 91 for accommodating the material pressing block 50, and the yielding groove 91 has enough space for the material pressing block 50 to move up and down.

The guiding disc 90 of this embodiment is disc-shaped, and its outer contour matches with the inner contour of the wall to be measured of the workpiece a to be measured, and the guiding disc 90 is detachably and fixedly connected with the positioning disc 30 through screws.

Specifically, the material pressing block 50 of the present embodiment is detachably and fixedly connected with a sliding block 51, the positioning plate 30 is provided with a sliding slot 31, and the sliding block 51 is slidably embedded in the sliding slot 31; the device further comprises an operating part 100, one end of the operating part 100 is fixedly connected with the sliding block 51, and the other end of the operating part 100 is located above the base 10 and is used for external force to operate and control to drive the sliding block 51 to move.

In the embodiment, a T-shaped chute is formed in the middle of the positioning plate 30 from top to bottom, and the sliding block 51 is a T-shaped block. The slide block 51 is provided with a mounting hole, one end of the pressing block 50 penetrates through the mounting hole, and one end of the pressing block 50 is embedded and fixed in the mounting hole of the slide block 51 by using a screw.

Specifically, the operating member 100 of the present embodiment includes a connecting rod 102 and a pressing rod 101, wherein one end of the connecting rod 102 is fixedly connected to the sliding block 51, and the other end is away from the base 10 by a certain distance; the pressing rod 101 is located in the controllable area above the base 10 and connected to the other end of the connecting rod 102 to form linkage with the connecting rod 102, and the pressing rod 101 is pressed downwards to drive the connecting rod 102 to move downwards.

Specifically, one end of the connecting rod 102 of the present embodiment is provided with a first limiting convex edge, and the pressing rod 101 is provided with a first through hole and a second through hole; the control member 100 further comprises a limiting rod 103, and the limiting rod 103 is arranged in the first through hole in a penetrating manner; the connecting rod 102 is arranged in the second through hole; one end of the limiting rod 103 is fixedly connected with the base 10, and the other end is provided with a second limiting convex edge; the lower part of the pressure lever 101 is propped against the first limiting convex edge, and the upper part of the pressure lever 101 is propped against the second limiting convex edge to form a pressure lever.

Specifically, the elastic restoring member 60 of the present embodiment includes a spring seat 61 and a compression spring 62; the spring seat 61 is fixedly arranged on the positioning plate 30, and the compression spring 62 is propped against between the material pressing block 50 and the spring seat 61; connecting rod 102 passes spring holder 61 and is connected with slider 51, has seted up first spring mounting groove on the spring holder 61, has seted up second spring mounting groove on slider 51, and the both ends of compression spring 62 are adorned respectively and are inlayed in first spring mounting groove and second spring mounting groove.

The spring seat 61 of the embodiment is embedded in the chute 31 below the positioning plate 30 and fixed by using a screw; the connecting rod 102 is a long screw, a nut of the screw forms a first limit protruding edge, and one end of the screw is in threaded connection with the sliding block 51. The limiting rod 103 is a short screw, one end of the screw is screwed with the base 10, and a nut of the screw forms a second limiting convex edge.

Specifically, the swing link 70 of the present embodiment is rotatably connected to the central shaft 32 through a rotating connection member 110, and the rotating connection member 110 includes a bearing 111 and a rotating sleeve 112; the bearing 111 is sleeved on the central shaft 32, the rotating sleeve 112 is sleeved outside the bearing 111, and the swing rod 70 is fixedly sleeved on the rotating sleeve 112.

Specifically, the upper end of the swing link 70 of the present embodiment is connected to the dial indicator 80, and the middle portion is sleeved on the upper end and the lower end of the rotating sleeve 112 and is provided with a rotation limiting portion 71; the fixed vertical plate 20 is provided with a limiting groove 21, the rotation limiting part 71 is positioned in the limiting groove 21, and the groove wall of the limiting groove 21 limits the rotation limiting part 71.

The upper end of the swing rod 70 of this embodiment is a rectangular block, the middle of the swing rod 70 of this embodiment is a collar with a broken middle, and two ends of the collar are locked by screws to be fastened on the rotating sleeve 112. The rotation-restricting portion 71 is small in top and large in bottom.

In the specific embodiment, the rotating sleeve 112 is fixedly connected with a rotating handle 120, and the rotating handle 120 is rotated to drive the swing rod 70 to rotate, so as to drive the dial indicator 80 to rotate; the standard block 40 is fixedly connected with one end of an insert 41, a mounting hole is formed in the positioning disc 30, and the other end of the insert 41 is detachably and fixedly embedded in the mounting hole.

Specifically, a height adjusting block 81 is fixedly connected to the upper end of the swing rod 70 in the present embodiment, and the height adjusting block 81 can be vertically adjusted to a fixed position relative to the swing rod 70; the height adjusting block 81 is connected with a fixed seat 82, and the fixed seat 82 can be adjusted to a fixed position relative to the height adjusting block 81; the dial indicator 80 is fixedly arranged on the fixed seat 82.

The height adjusting block 81 of this embodiment is provided with a square longitudinal adjusting slot and an adjusting slot hole adapted to the rectangular block at the upper end of the swing rod 70, and a screw passes through the adjusting slot hole to fix the height adjusting block 81 on the swing rod 70. The trapezoidal transverse adjusting groove and the adjusting screw holes symmetrically arranged are further formed in the upper end of the height adjusting block 81, the fixing base 82 is installed in the transverse adjusting groove, the adjusting screw is further arranged on the fixing base 82 and abuts against the height adjusting block 81, the screw penetrates through the adjusting screw holes to fasten the fixing base 82 on the height adjusting block 81, the screw is loosened, and the front position and the rear position of the fixing base 82 can be adjusted by rotating the adjusting screw.

Specifically, the standard surface of the standard block 40 of the present embodiment is an inward concave surface, and the abutting surface of the pressing block 50 is an outward convex surface; during detection, the standard block 40 is arranged above the groove a1 of the workpiece to be detected in a spanning mode, the contact stress points of the standard block 40 and the outer circular surface of the workpiece to be detected A are located on two sides of the groove a1 of the workpiece to be detected A, the pressing block 50 abuts against the inner surface of the groove a1 of the workpiece to be detected, and the contact stress points of the pressing block 50 and the inner surface of the groove a1 of the workpiece to be detected are located in the middle of the inner surface of the groove a1 of the workpiece to be detected. Three-point positioning is realized, stress points are all located at the position where the strength of the workpiece A to be detected is highest, deformation is not easy to generate, and detection accuracy is high.

During detection, the pressing rod 101 is pressed downwards to drive the pressing block 50 to move downwards to give way to form a sufficient space, meanwhile, the workpiece A to be detected is placed on the guide disc 90 in a sleeved mode, the position is adjusted to enable the surface to be detected to be located between the pressing block 50 and the standard block 40, the pressing rod 101 is loosened, the pressing block 50 moves upwards to clamp the workpiece A to be detected, the detection head of the dial gauge 80 slightly abuts against the surface to be detected of the workpiece A to be detected, the handle 120 is rotated to drive the swing rod 70 to rotate, the detection head of the dial gauge 80 slides along the surface to be detected of the workpiece A to be detected, and the radian of the surface to be detected is detected.

The utility model discloses a local line profile tolerance detection device, simple structure, convenient operation can not exert an influence to the work piece that awaits measuring, and the accuracy is high, can be used to the online detection. When the connecting pieces with different sizes are detected, the multi-variety sharing detection platform can be realized only by replacing the corresponding guide disc, the material pressing block and the standard block, and the interchangeability is strong.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.

Claims

1. A local line profile tolerance detection device is characterized by comprising a base (10), a fixed vertical plate (20), a positioning plate (30), a standard block (40), a material pressing block (50), an elastic resetting piece (60), a swing rod (70) and a dial indicator (80); the fixed vertical plate (20) is fixedly arranged on the base (10); the positioning disc (30) is fixedly connected with the fixed vertical plate (20), and a central shaft (32) is arranged on the positioning disc (30); the swing rod (70) is rotationally connected with the central shaft (32); the standard block (40) is fixedly connected to the positioning plate (30); the material pressing block (50) is slidably arranged on the positioning plate (30); the elastic resetting piece (60) is fixedly arranged on the positioning plate (30) and is used for providing a resetting force for the material pressing block (50) to move towards the standard block (40); the dial indicator (80) is fixedly connected to the swing rod (70) and can swing along with the swing rod (70); during detection, the standard block (40) and the pressing block (50) are matched together to clamp a workpiece to be detected, so that the outer circular surface of the workpiece to be detected is attached to the standard surface of the standard block (40), and the detection head of the dial indicator (80) abuts against the surface to be detected of the workpiece to be detected.

2. The device for detecting the local line profile degree according to claim 1, further comprising a guiding disc (90), wherein the guiding disc (90) is detachably and fixedly connected to the positioning disc (30) and used for sleeving the workpiece to be detected; offer on guiding disc (90) and be used for the holding set down groove (91) of stepping down of material piece (50), it has sufficient space to let down groove (91) supply material piece (50) reciprocate.

3. The device for detecting the local line profile degree according to claim 2, wherein the pressing block (50) is fixedly connected with a sliding block (51), a sliding groove (31) is formed in the positioning disc (30), and the sliding block (51) is slidably and detachably embedded in the sliding groove (31); the device is characterized by further comprising an operating component (100), one end of the operating component (100) is fixedly connected with the sliding block (51), and the other end of the operating component is located above the base (10) and is used for external force to operate and control to drive the sliding block (51) to move.

4. The device for detecting the local line profile degree according to claim 3, wherein the operation control member (100) comprises a connecting rod (102) and a pressing rod (101), one end of the connecting rod (102) is fixedly connected with the sliding block (51), and the other end is at a certain distance from the base (10); the pressing rod (101) is located in an operable area above the base (10) and connected to the other end of the connecting rod (102) to form linkage with the connecting rod (102), and the pressing rod (101) is pressed downwards to drive the connecting rod (102) to move downwards.

5. The device for detecting the local line profile degree according to claim 4, wherein one end of the connecting rod (102) is provided with a first limiting convex edge, and the pressing rod (101) is provided with a first through hole and a second through hole; the operating control piece (100) further comprises a limiting rod (103), and the limiting rod (103) penetrates through the first through hole; one end of the limiting rod (103) is fixedly connected with the base (10), and the other end of the limiting rod is provided with a second limiting convex edge; the lower part of the pressure lever (101) is abutted against the first limiting convex edge, and the upper part of the pressure lever (101) is abutted against the second limiting convex edge to form a pressure lever.

6. The local line profile detection device according to claim 4, wherein said elastic return member (60) comprises a spring seat (61) and a compression spring (62); the spring seat (61) is fixedly arranged on the positioning disc (30), and the compression spring (62) is abutted between the sliding block (51) and the spring seat (61); the connecting rod (102) penetrates through the spring seat (61) to be connected with the sliding block (51), a first spring mounting groove is formed in the spring seat (61), a second spring mounting groove is formed in the sliding block (51), and two ends of the compression spring (62) are respectively embedded in the first spring mounting groove and the second spring mounting groove.

7. The device for detecting the local line profile degree according to claim 1, wherein the swing link (70) is rotatably connected with the central shaft (32) through a rotating connector (110), and the rotating connector (110) comprises a bearing (111) and a rotating sleeve (112); the bearing (111) is sleeved on the central shaft (32), the rotating sleeve (112) is sleeved outside the bearing (111), and the swing rod (70) is fixedly sleeved on the rotating sleeve (112); the rotating sleeve (112) is fixedly connected with a rotating handle (120), and the rotating handle (120) is rotated to drive the swing rod (70) to rotate, so that the dial indicator (80) is driven to rotate; the standard block (40) is fixedly connected with one end of an insert (41), a mounting hole is formed in the positioning disc (30), and the other end of the insert (41) can be detachably and fixedly embedded in the mounting hole.

8. The device for detecting the local line profile degree according to claim 7, wherein the upper end of the swing rod (70) is connected with the dial indicator (80), the middle part of the swing rod is sleeved on the upper end and the lower end of the rotary sleeve (112) and is provided with a rotation limiting part (71); the fixed vertical plate (20) is provided with a limiting groove (21), the rotating limiting part (71) is positioned in the limiting groove (21), and the groove wall of the limiting groove (21) limits the rotating limiting part (71).

9. The device for detecting the local line profile degree according to claim 8, wherein a height adjusting block (81) is fixedly connected to the upper end of the swing rod (70), and the height adjusting block (81) can be adjusted to a fixed position relative to the swing rod (70); the height adjusting block (81) is connected with a fixed seat (82), and the fixed seat (82) can be adjusted to a fixed position back and forth relative to the height adjusting block (81); the dial indicator (80) is fixedly arranged on the fixed seat (82).

10. The local line profile detection device according to any one of claims 1 to 9, wherein the standard surface of the standard block (40) is an inner concave arc surface, and the abutting surface of the pressing block (50) is an outer convex arc surface; during detection, the standard block (40) is arranged above the groove of the workpiece to be detected in a spanning mode, the contact stress point of the standard block (40) and the outer circular surface of the workpiece to be detected is located on two sides of the groove of the workpiece to be detected, the pressing block (50) abuts against the inner surface of the groove of the workpiece to be detected, and the contact stress point of the pressing block (50) and the inner surface of the groove of the workpiece to be detected is located in the middle of the inner surface of the groove of the workpiece to be detected.