CN108458684B - Surface profile detection device - Google Patents
Surface profile detection device Download PDFInfo
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- CN108458684B CN108458684B CN201810162986.0A CN201810162986A CN108458684B CN 108458684 B CN108458684 B CN 108458684B CN 201810162986 A CN201810162986 A CN 201810162986A CN 108458684 B CN108458684 B CN 108458684B
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- 238000001514 detection method Methods 0.000 title claims abstract description 244
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000000758 substrate Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention provides a surface profile detection device for detecting the surface profile of a surface to be detected, which is arranged on a detection base and is positioned on the internal structure of a part, comprising: the auxiliary piece is fixedly arranged on the detection base and comprises an auxiliary body arranged on the outer side of the external structure, a positioning cavity is arranged in the auxiliary body, and the end face of the auxiliary body, which is opposite to the surface to be detected, is a first detection end face; the detection pin comprises a pin body which is axially movably arranged in the positioning cavity, a detection convex part which is arranged on the detection end of the pin body, can be in contact with the surface to be detected and eccentrically rotates relative to the axis of the pin body, and a convex edge is arranged at the other end of the pin body, wherein the end surface of the convex edge, which faces the surface to be detected, is a second detection end surface; and the measuring device is suitable for detecting the distance between the first detection end face and the second detection end face when the detection convex part is contacted with the surface to be detected. The surface profile detection device can detect multiple data on the surface to be detected, is convenient to place and can enable measurement staff to read values in a head-up mode.
Description
Technical Field
The invention relates to the technical field of component detection, in particular to a component surface profile detection device.
Background
In the mass production process of the automobile assembly parts, in order to ensure the quality of the automobile assembly parts, the surface profile of the automobile assembly parts needs to be detected by a detection tool, and the surface profile is an index for limiting the fluctuation of an actual curved surface to an ideal curved surface and is a requirement for the shape precision of the curved surface.
In the prior art, a special surface profile detection device is generally adopted for detection, wherein the special detection device for measuring the surface profile generally comprises a detection base and an auxiliary piece fixedly arranged at a preset position of the detection base.
Because the automobile assembly part is large in size and complex in structure, if the surface to be detected is located on the inner structure of the automobile assembly part, the inner structure and the outer structure of the automobile assembly part blocked outside form a cavity, an opening of the cavity is close to the detection base, the surface to be detected is located on the inner wall of the cavity, during detection, the automobile assembly part is fixedly installed on the detection base through a preset connection part (the preset connection part and the fixed installation of the detection base are theoretically enabling the detection end face of the auxiliary part facing the surface to be detected to be parallel to the surface to be detected), at the moment, if the auxiliary part cannot enter the cavity corresponding to the surface to be detected, the automobile assembly part is judged to be unqualified, if the auxiliary part can enter the cavity corresponding to the surface to be detected, the actual distance between the detection end face of the auxiliary part and the surface to be detected is measured through measuring tools, and the measured actual distance value is compared with the theoretical distance value between the detection end face of the auxiliary part and the surface to be detected, so that the surface profile deviation value of the surface to be detected is obtained, and the surface profile of the surface to be detected is detected.
Under the condition that the operation space is small, the measuring tool is not easy to be placed between the detection end face and the surface to be detected of the auxiliary piece, so that a measurer cannot look at the read value in a head-up manner, and poor measurement operability and accuracy of measurement data can be caused.
The patent document with publication number of CN204807002U discloses a detection pin auxiliary device, which comprises a pin, one end of the pin passes through a through hole of a fixed reference block and then is attached to a part to be detected, the other end of the pin is connected with a substrate, the shaft core of the pin is perpendicular to the surface of the substrate, the end face of the reference block opposite to the substrate is arranged in parallel with the surface of the substrate, the distance between the end face and the substrate is measured by a clearance gauge, and the measured value is compared with a theoretical value to judge whether the surface to be detected of the part to be detected has a concave-convex phenomenon.
The auxiliary device for detecting the pin can solve the problems that the operation space is small, the detection device is not easy to place, and a measurer cannot read the value in a head-up mode, but only can detect the surface profile of the surface corresponding to the axial direction of the through hole, the detection data is single, and the detection range is limited.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects that in the prior art, the surface profile detection device is poor in detection precision due to single detection data or the detection precision is poor due to the fact that a measurer cannot look at a read value in a head-up manner due to the fact that the detection device is not easy to place, so that the surface profile detection device capable of detecting multiple data on a surface to be detected is provided, and meanwhile, the placement is convenient, and the measurer can look at the read value in a head-up manner.
The invention provides a surface profile detection device, which is suitable for detecting the surface profile of a surface to be detected, which is arranged on a detection base and is positioned on an inner structure of a part, wherein the inner structure and an outer structure of the part blocked outside the inner structure enclose a cavity, the surface to be detected is positioned on the inner wall of the cavity, and the surface profile detection device comprises:
the auxiliary piece is fixedly arranged on the detection base and comprises an auxiliary body arranged on the outer side of the external structure and a positioning cavity arranged in the auxiliary body, the end face of the auxiliary body, which is opposite to the surface to be detected, is a first detection end face, and the first detection end face is perpendicular to the length extending direction of the positioning cavity;
the detection pin comprises a pin body which is axially movably arranged in the positioning cavity, and a detection convex part which is arranged on the detection end of the pin body, can be in contact with the surface to be detected and eccentrically rotates relative to the axis of the pin body, wherein a convex edge radially extends outwards from the peripheral wall of the other end of the pin body, the end surface of the convex edge, which faces the surface to be detected, is a second detection end surface, and the second detection end surface is perpendicular to the axis of the pin body;
and the measuring device is suitable for detecting the distance between the first detection end face and the second detection end face when the detection convex part is in contact with the surface to be detected.
The detection end is hinged with a detection block, the length of the detection block is larger than the outer diameter of the detection end, the detection block is provided with a first state which is collinear with the pin body and a second state which is perpendicular to the pin body, and the second state is locked through a locking structure;
the detection convex part is arranged on one side surface of the detection block facing the surface to be detected when the detection block is in the second state, and the sum of the protruding length of the detection convex part and the width of the detection block is not larger than the outer diameter of the detection end.
The detection convex part is arranged at one end of the detection block, which is far away from the detection end when the detection block is in the second state.
The locking structure includes:
the limiting groove is arranged on the detection end and is suitable for accommodating the detection block, and the groove bottom of the limiting groove can be propped against the corresponding side surface of the detection block when the detection block is in the second state.
The groove width of the limiting groove is matched with the thickness of the detection block.
The positioning cavity is a cavity surrounded by a positioning through hole, and the first detection end face is perpendicular to the axis of the positioning through hole.
The pin body further includes:
the outer diameter of the first shaft section is matched with the positioning through hole, and the convex edge is arranged on the first shaft section;
and the second shaft section is coaxially connected with the first shaft section, one end far away from the first shaft section is the detection end, and the outer diameter of the second shaft section is smaller than that of the first shaft section.
The outer structure is provided with a limiting cavity at least for the second shaft section to pass through.
The auxiliary member further includes:
the auxiliary base is fixedly arranged on the detection base;
and one end of the bracket is connected with the auxiliary base, and the other end of the bracket is connected with the auxiliary body.
The measuring device is a measuring tool.
The technical scheme of the invention has the following advantages:
1. the invention provides a surface profile detection device, which is suitable for detecting the surface profile of a surface to be detected, which is arranged on a detection base and is positioned on an inner structure of a part, wherein the inner structure and an outer structure of the part blocked outside the inner structure enclose a cavity, the surface to be detected is positioned on the inner wall of the cavity, and the surface profile detection device comprises: the auxiliary piece is fixedly arranged on the detection base and comprises an auxiliary body arranged on the outer side of the external structure and a positioning cavity arranged in the auxiliary body, the end face of the auxiliary body, which is opposite to the surface to be detected, is a first detection end face, and the first detection end face is perpendicular to the length extending direction of the positioning cavity; the detection pin comprises a pin body which is axially movably arranged in the positioning cavity, and a detection convex part which is arranged on the detection end of the pin body, can be in contact with the surface to be detected and eccentrically rotates relative to the axis of the pin body, the outer peripheral wall of the other end of the pin body radially extends outwards to form a convex edge, the end surface of the convex edge, which faces the surface to be detected, is a second detection end surface, and the second detection end surface is perpendicular to the axis of the pin body; and the measuring device is suitable for detecting the distance between the first detection end face and the second detection end face when the detection convex part is contacted with the surface to be detected. Before detection, a first theoretical distance between a first detection end face and a surface to be detected and a second theoretical distance between a second detection end face and the surface to be detected can be obtained through measurement and calculation of a theoretical model, so that a theoretical reference value of the second theoretical distance and the first theoretical distance is obtained. Because the first detection terminal surface and the second detection terminal surface are in spare part outer structure outside, the space is great, and the detection device and the measuring device of being convenient for are placed, simultaneously because measuring device also is in spare part outer structure's outside when measuring, measuring person has great activity space, is convenient for look for suitable angle and carries out the reading to measuring device for measuring person can head up the reading. After detecting a position, rotating the detection pin to enable the detection convex part to be abutted against different positions of the surface to be detected, and comparing the actual distance values of the different positions with theoretical reference values respectively through detection to obtain a plurality of surface profile deviation value data. Therefore, the surface profile detection device provided by the invention can detect a plurality of data on the surface to be detected, and is convenient to place and can enable a measurer to look up the surface profile of the read value.
2. The invention provides a surface profile detection device, wherein a detection block is hinged at a detection end, the length of the detection block is larger than the outer diameter of the detection end, the detection block is provided with a first state which is collinear with a pin body and a second state which is perpendicular to the pin body, and the second state is locked through a locking structure; the detection convex part is arranged on one side surface of the detection block facing the surface to be detected when the detection block is in the second state, and the sum of the protruding length of the detection convex part and the width of the detection block is not larger than the outer diameter of the detection end. When detecting, place the detection piece in with the first state of round pin body collineation to pass the locating cavity with round pin body and detection piece jointly, after the external structure of part is passed through to the detection piece, place the detection piece in with the second state of round pin body vertically, and lock through locking structure, detect the convex part and be located the detection end radially at this moment, and be greater than the external diameter of detection end. The surface profile of the surface to be detected outside the outer diameter range of the detection end can be detected through the detection convex part arranged on the detection block with the length larger than the outer diameter of the detection end.
3. The invention provides a surface profile detection device, a locking structure comprises: the limiting groove is arranged on the detection end and is suitable for accommodating the detection block, and the bottom of the limiting groove can be propped against the corresponding side surface of the detection block when the detection block is in the second state. The second state of the detection block can be locked only by abutting the bottom of the limiting groove against the corresponding side face of the detection block, the locking structure is simple, and the locking effect is stable.
4. The invention provides a surface profile detection device, wherein the groove width of a limit groove is matched with the thickness of a detection block. Therefore, when the detection convex part is propped against the surface to be detected to detect the surface to be detected, the detection convex part cannot shake under the drive of the detection block, and the accuracy of measurement is improved.
5. The invention provides a surface profile detection device, the pin body further comprises: the outer diameter of the first shaft section is matched with the positioning through hole, and the first shaft section is provided with a convex edge; and the second shaft section is coaxially connected with the first shaft section, one end far away from the first shaft section is a detection end, and the outer diameter of the second shaft section is smaller than that of the first shaft section. By making the outer diameter of the second shaft section smaller than the outer diameter of the first shaft section, the cross-sectional diameter of the relief space that can be reserved between the outer structure and other structures or inside the outer structure does not have to be larger than the outer diameter of the first shaft section, as long as it is larger than the outer diameter of the second shaft section; meanwhile, the pin body is convenient to pass through the positioning through hole to be contacted with the surface to be detected, and the overall material of the detection pin is reduced, so that the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a surface profile detection device according to a first embodiment of the present invention when detecting a surface to be detected;
FIG. 2 is a schematic view of a detecting pin of the surface profile detecting device shown in FIG. 1;
FIG. 3 is a schematic view of the detecting block and detecting bump of the detecting pin shown in FIG. 2;
FIG. 4 is a partial schematic view of the detection pin shown in FIG. 1 in a mated state with the auxiliary body;
FIG. 5 is a schematic view showing a structure in which an auxiliary member of the surface profile measuring device shown in FIG. 1 is mounted on a measuring base;
reference numerals illustrate:
1-an external structure; 2-internal structure; 3-a surface to be measured; 4-detecting a base; 5-an auxiliary base;
6-a bracket; 7-an auxiliary body; 8-a first shaft section; 9-a second shaft section; 10-detecting blocks;
11-a second detection end face; 12-a first detection end face; 13-detecting the convex portion;
14-positioning through holes; 15-a limit groove; 16-convex edges; 17-cavity.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1-5, the present embodiment provides a surface profile detection device, which is adapted to detect a surface profile of a surface 3 to be detected, which is mounted on a detection base 4 and is located on an inner structure 2 of a component, wherein the inner structure 2 and an outer structure 1 of the component blocked on the inner structure enclose a cavity 17, the surface 3 to be detected is located on an inner wall of the cavity 17, and the device includes: the auxiliary piece is fixedly arranged on the detection base 4 and comprises an auxiliary body 7 arranged on the outer side of the external structure 1 and a positioning cavity arranged in the auxiliary body 7, the end surface of the auxiliary body 7, which is back to the surface to be detected 3, is a first detection end surface 12, and the first detection end surface 12 is perpendicular to the length extension direction of the positioning cavity; the detection pin comprises a pin body which is axially movably arranged in the positioning cavity, and a detection convex part 13 which is arranged on the detection end of the pin body, can be in contact with the surface to be detected 3 and eccentrically rotates relative to the axis of the pin body, wherein the outer peripheral wall of the other end of the pin body is radially extended to the outside to form a convex edge 16, the end surface of the convex edge 16 facing the surface to be detected 3 is a second detection end surface 11, and the second detection end surface 11 is perpendicular to the axis of the pin body; the measuring device is adapted to detect the distance between the first detection end face 12 and the second detection end face 11 when the detection protrusion 13 is in contact with the surface to be measured 3.
Before detection, a first theoretical distance between the first detection end face 12 and the surface 3 to be detected and a second theoretical distance between the second detection end face 11 and the surface 3 to be detected can be obtained through measurement and calculation of a theoretical model, so that a theoretical reference value of the second theoretical distance and the first theoretical distance can be obtained. Because the first detection end face 12 and the second detection end face 11 are both positioned on the outer side of the part outer structure 1, the space is large, the detection device and the measuring device are convenient to place, meanwhile, because the measuring device is also positioned on the outer side of the part outer structure 1 during measurement, a measuring person has a large movable space, and is convenient to find a proper angle to read the measuring device, so that the measuring person can read the value in a head-up manner. After detecting one position, the detecting pin is rotated to enable the detecting convex part 13 to be abutted against different positions of the surface to be detected 3, actual distance values of the different positions are detected and compared with theoretical reference values respectively, so that a plurality of surface profile deviation value data are obtained, the position with larger surface profile deviation value is easier to find through measuring the multiple positions, and therefore more accurate judgment is conveniently given to the surface profile of the surface to be detected 3. Therefore, the surface profile detection device provided by the invention can detect multiple data on the surface 3 to be detected, and is convenient to place and can enable a measurer to look up the surface profile of the read value.
The detection end in the embodiment is hinged with a detection block 10, the length of the detection block 10 is larger than the outer diameter of the detection end, the detection block 10 is provided with a first state which is collinear with the pin body and a second state which is perpendicular to the pin body, and the second state is locked through a locking structure; the detecting protrusion 13 is disposed on a side surface of the detecting block 10 facing the surface to be detected 3 when in the second state, and a sum of a protruding length of the detecting protrusion 13 and a width of the detecting block 10 is not greater than an outer diameter of the detecting end.
During detection, the detection block is placed in a first state of being collinear with the pin body, the pin body and the detection block 10 jointly penetrate through the positioning cavity, after the detection block 10 passes through the outer structure 1 of the part, the detection block 10 is placed in a second state perpendicular to the pin body and locked through the locking structure, and at the moment, the detection convex part 13 is located on the radial direction of the detection end and is larger than the outer diameter of the detection end. By such a detection convex portion 13 provided on the detection block 10 having a length longer than the detection end outer diameter, the surface profile of the surface 3 to be detected outside the detection end outer diameter range can be detected.
The detection protrusion 13 in the present embodiment is provided at an end of the detection block 10 that is away from the detection end when in the second state.
The form of the locking structure may be varied, and in this embodiment, the locking structure includes: the limiting groove 15 is arranged on the detection end and is suitable for accommodating the detection block 10, and the bottom of the limiting groove 15 can be propped against the corresponding side surface of the detection block 10 when the detection block 10 is in the second state.
The second state of the detection block 10 can be locked only by abutting the bottom of the limit groove 15 against the corresponding side surface of the detection block 10, the locking structure is simple, and the locking effect is stable.
The groove width of the limit groove 15 in this embodiment is adapted to the thickness of the detection block 10.
Therefore, when the detection convex part 13 is abutted against the surface 3 to be detected and the surface 3 to be detected is detected, the detection convex part is not rocked under the drive of the detection block 10, and the accuracy of measurement is improved.
The positioning cavity in this embodiment is a cavity surrounded by the positioning through hole 14, and the first detection end face 12 is perpendicular to the axis of the positioning through hole 14.
As an alternative embodiment, the positioning cavity may also be a positioning groove, and the first detection end surface 12 is perpendicular to the axis of the positioning groove.
The pin body in this embodiment further includes: the outer diameter of the first shaft section 8 is matched with the positioning through hole 14, and the first shaft section 8 is provided with a convex edge 16; the second shaft section 9 is coaxially connected with the first shaft section 8, one end far away from the first shaft section 8 is a detection end, and the outer diameter of the second shaft section 9 is smaller than that of the first shaft section 8.
By making the outer diameter of the second shaft section 9 smaller than the outer diameter of the first shaft section 8, the cross-sectional diameter of the relief space that can be reserved between the outer structure 1 and other structures, or inside the outer structure 1, does not have to be larger than the outer diameter of the first shaft section 8, as long as it is larger than the outer diameter of the second shaft section 9; meanwhile, the pin body is convenient to pass through the positioning cavity to be in contact with the surface to be detected 3, and the overall material of the detection pin is reduced, so that the cost is reduced.
The outer structure 1 in this embodiment is provided with a limiting cavity through which at least the second shaft section 9 can pass.
The limiting cavity in this embodiment is a limiting hole. As an alternative embodiment, the limiting cavity may also be a limiting groove.
The auxiliary member in this embodiment further includes: the auxiliary base 5 is fixedly arranged on the detection base 4; and one end of the bracket 6 is connected with the auxiliary base 5, and the other end is connected with the auxiliary body 7.
The measuring device is typically a gauge, which in this embodiment is a clearance gauge.
During detection, firstly, parts are fixedly arranged on a detection base 4 according to preset positions, at this time, an auxiliary body 7 is positioned on the outer side of a part outer structure 1, a detection block 10 is placed in a first state collinear with a pin body, the pin body and the detection block 10 jointly penetrate through a positioning cavity, after the detection block 10 passes through the part outer structure 1, the detection block 10 is placed in a second state perpendicular to the pin body, the detection block is locked through a locking structure, the detection pin is continuously pushed towards a surface to be detected, the detection convex part 13 is abutted against the surface to be detected 3, a measuring device is used for detecting the distance between a first detection end surface 12 and a second detection end surface 11, an actual distance value can be obtained through reading values of the measuring device positioned on the outer side of the part outer structure 1, after one position is detected, the detection convex part 13 is abutted against different positions of the surface to be detected, and the actual distance values in a plurality of different positions are detected. Because the first detection end face 12 and the second detection end face 11 are both positioned on the outer side of the part outer structure 1, the space is large, the detection device and the measuring device are convenient to place, meanwhile, because the measuring device is also positioned on the outer side of the part outer structure 1 during measurement, a measuring person has a large movable space, and is convenient to find a proper angle to read the measuring device, so that the measuring person can read the value in a head-up manner.
Before detection, a first theoretical distance between the first detection end face 12 and the surface 3 to be detected and a second theoretical distance between the second detection end face 11 and the surface 3 to be detected can be obtained through calculation of a theoretical model, so that a theoretical reference value of the second theoretical distance and the first theoretical distance is obtained.
And finally, comparing the measured actual distance values with a theoretical reference value to obtain a plurality of surface profile deviation values. Through the measurement of multiple positions, the position with larger deviation value of the surface profile is easier to find, so that more accurate judgment on the surface profile of the surface 3 to be measured is facilitated.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (10)
1. The utility model provides a face profile detection device, is suitable for detecting the face profile of installing on detecting base (4), being located the surface to be tested (3) on inner structure (2) of spare part, inner structure (2) enclose into a cavity (17) with the outer structure (1) of the spare part that blocks outside it, surface to be tested (3) are located on the intracavity wall of cavity (17), characterized in that includes:
the auxiliary piece is fixedly arranged on the detection base (4) and comprises an auxiliary body (7) arranged on the outer side of the external structure (1) and a positioning cavity arranged in the auxiliary body (7), the end surface of the auxiliary body (7) facing away from the surface to be detected (3) is a first detection end surface (12), and the first detection end surface (12) is perpendicular to the length extending direction of the positioning cavity;
the detection pin comprises a pin body which is axially movably arranged in the positioning cavity, and a detection convex part (13) which is arranged on the detection end of the pin body, can be in contact with the surface to be detected (3) and eccentrically rotates relative to the axis of the pin body, wherein a convex edge (16) radially extends outwards from the peripheral wall of the other end of the pin body, the end surface of the convex edge (16) facing the surface to be detected (3) is a second detection end surface (11), and the second detection end surface (11) is perpendicular to the axis of the pin body;
and a measuring device adapted to detect a distance between the first detection end face (12) and the second detection end face (11) when the detection protrusion (13) is in contact with the surface (3) to be detected.
2. A surface profile control device according to claim 1, characterized in that the control end is hinged with a control block (10), the control block (10) having a length greater than the outer diameter of the control end, the control block (10) having a first condition co-linear with the pin body and a second condition perpendicular to the pin body, the second condition being locked by a locking structure;
the detection convex part (13) is arranged on one side surface of the detection block (10) facing the surface to be detected (3) when the detection block is in the second state, and the sum of the protruding length of the detection convex part (13) and the width of the detection block (10) is not larger than the outer diameter of the detection end.
3. A surface profile control device according to claim 2, characterized in that the detection protrusion (13) is provided at an end of the detection block (10) remote from the detection end when in the second state.
4. The apparatus according to claim 2, wherein the locking structure comprises:
the limiting groove (15) is arranged on the detection end and is suitable for accommodating the detection block (10), and the groove bottom of the limiting groove (15) can be abutted against the corresponding side surface of the detection block (10) when the detection block (10) is in the second state.
5. The surface profile control device according to claim 4, characterized in that the groove width of the limit groove (15) is adapted to the thickness of the control block (10).
6. A surface profile control device according to any one of claims 1-5, characterized in that the positioning cavity is a cavity surrounded by a positioning through hole (14), and the first detection end surface (12) is perpendicular to the axis of the positioning through hole (14).
7. The apparatus according to claim 6, wherein the pin body further comprises:
the outer diameter of the first shaft section (8) is matched with the positioning through hole (14), and the convex edge (16) is arranged on the first shaft section (8);
the second shaft section (9) is coaxially connected with the first shaft section (8), one end far away from the first shaft section (8) is the detection end, and the outer diameter of the second shaft section (9) is smaller than the outer diameter of the first shaft section (8).
8. The device according to claim 7, characterized in that the outer structure (1) is provided with a limiting cavity through which at least the second shaft section (9) can pass.
9. The apparatus according to any one of claims 1 to 5, wherein the auxiliary member further comprises:
an auxiliary base (5) fixedly mounted on the detection base (4);
and one end of the bracket (6) is connected with the auxiliary base (5), and the other end of the bracket is connected with the auxiliary body (7).
10. A surface profile tolerance detection apparatus according to any one of claims 1 to 5, wherein the measurement means is a gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810162986.0A CN108458684B (en) | 2018-02-26 | 2018-02-26 | Surface profile detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810162986.0A CN108458684B (en) | 2018-02-26 | 2018-02-26 | Surface profile detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108458684A CN108458684A (en) | 2018-08-28 |
| CN108458684B true CN108458684B (en) | 2024-03-08 |
Family
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