A conical alignment positioning member and an automobile part detection device adopting the same

Abstract

The present application relates to a kind of conical alignment positioning mechanism and the automobile part detection device using it, it is related to automobile gauge technical field.The conical alignment positioning mechanism includes seat body, positioning piece and moving piece;Positioning piece is movably arranged on the seat body, and the end of positioning piece towards part positioning hole is set as conical end;Moving piece is connected on the positioning piece, and the moving piece is used to drive positioning piece to move, when moving towards positioning hole, the conical inclined side wall of the conical end will completely block the positioning hole.The present application uses conical end, overcome the part for diameter cylindrical pin in the positioning hole of positioning piece in existing gauge, inevitably will have gap between cylindrical pin and positioning hole, the gap will cause part to shake, can cause larger error problem to subsequent part detection.

Description

Technical Field

[0001] This invention relates to the field of automotive inspection technology, and more particularly to automotive inspection tools. Background Technology

[0002] To ensure the quality of automotive products, inspection tools are needed to test their precision. Among these tools, checking whether the positional accuracy of holes (such as positioning holes) on automotive parts meets the standards is a crucial part of product precision testing.

[0003] Position tolerance is the range of permissible positional variation of an object's axis or center plane; it's an indicator that limits the deviation of the actual position of a measured element from its ideal position. In other words, it refers to the allowable error range for the position of the object being annotated on the actual object. Specifically, the position tolerance of a hole refers to the permissible deviation distance X between the ideal centerline and the actual centerline of the hole.

[0004] In existing technologies, a fixed detection block and detection pin are designed based on the product's inspection measurement points. One method for detecting part positioning holes involves fixing the part to be inspected at a specific position on the detection block. Ideally, after fixing, the center line of the guide hole of the detection block coincides with the center line of the positioning hole of the part being inspected. However, in reality, the positioning hole of the part being inspected often has a deviation in its opening position, and its center line has a certain positional deviation from the center line of the guide hole. An allowable deviation distance X (i.e., the positional tolerance of the positioning hole) is set between the two center lines. The detection pin (the diameter of the detection pin = the actual diameter of the positioning hole of the part - 2X) is then passed through the guide hole of the detection block (the center line of the guide hole is equivalent to the ideal center line of the positioning hole; the diameter of the guide hole is generally the same as the diameter of the detection pin) to complete the process. To test the accuracy of a product, first align the center line of the product and then check if the protruding test pin can pass through the actual positioning hole. If it can, the position accuracy of the product's actual positioning hole meets the requirements. If it cannot, the position accuracy of the product's actual positioning hole does not meet the requirements. Alternatively, the test pin can pass through the actual positioning hole of the product (keeping the center line of the test pin parallel to the actual center line of the product's positioning hole), and then check if the protruding test pin can pass through the guide hole. The part to be tested also needs to be fixed in a specific position on the test block. If it can pass through, the position accuracy of the product's actual positioning hole meets the requirements. If it cannot, the position accuracy of the product's actual positioning hole does not meet the requirements.

[0005] To ensure the quality of automotive products, inspection fixtures are needed to check the surface contours and hole positions of the automotive products. The existing technology involves positioning and fixing the automotive parts to be inspected on the inspection equipment, and then the inspection components on the inspection equipment begin to complete the inspection. Therefore, whether the positioning components on the inspection equipment can accurately position the parts in the three directions of length (X direction), width (Y direction), and thickness (Z direction) will affect the accuracy of the subsequent inspection of the inspection components.

[0006] Current testing equipment has positioning components in three directions: length (X-axis), width (Y-axis), and thickness (Z-axis) of the part. Currently, the positioning component in the X-axis direction is a cylindrical positioning pin inserted into the positioning hole of the automotive part for positioning. However, the diameter of the positioning hole is generally within a certain error range compared to the diameter of the positioning pin. When the diameter of the positioning hole is larger than the diameter of the positioning pin, the part will wobble in the X-axis direction, and the positioning will not be stable enough. If the part wobbles during testing, it will cause testing errors.

[0007] Secondly, the existing Y-axis positioning method uses a thrust device on one side of the part's width to push the part against the zero-contact surface on the other side of the part's width. If the zero-contact surface is not flat, it will cause errors in the Y-axis positioning of the part, resulting in inaccurate detection.

[0008] In addition, the overall positioning structure is not properly distributed on the testing equipment, which fails to effectively stabilize and fix the parts in three dimensions. Summary of the Invention

[0009] To address the problem in existing technologies where "the positioning component fails to accurately position the part in the X, Y, and Z axes, which can negatively impact the accuracy of subsequent testing results," this invention proposes a conical alignment positioning component. The positioning part uses a conical structure instead of a cylindrical pin, preventing wobbling gaps between the positioning part and the positioning hole, resulting in more secure positioning. Furthermore, the conical alignment positioning component also functions as a positional accuracy gauge. This invention also discloses an automotive parts testing device that utilizes this component and provides accurate and secure positioning.

[0010] To achieve this objective, the present invention adopts the following technical solution:

[0011] A conical alignment and positioning mechanism,

[0012] Includes the base, positioning components, and moving components;

[0013] A positioning element is movably disposed on the base, and one end of the positioning element is configured as a conical end;

[0014] The positioning member is connected to a movable member, which is used to drive the positioning member to move. When it moves toward the positioning hole, the diameter of the positioning hole is located within the open range of the diameter of the conical inclined sidewall.

[0015] Furthermore,

[0016] The conical end is a frustum and is disposed on the end face of the positioning member. The front end face of the conical end is a narrow end, including four straight inclined sides arranged in a rhomboid symmetrical pattern. Adjacent straight inclined sides are connected by arc-shaped sides with the same curvature. A pair of arc-shaped sides and the side wall of the positioning member form a conical inclined side wall with a gradually increasing diameter. Another pair of arc-shaped sides and the straight inclined sides and the end face of the positioning member form a pin-shaped side wall with a fixed diameter. The pin-shaped side wall and the conical inclined side wall form an inclined wall.

[0017] The diameter of the positioning hole is located within the open range of the numerical range of the diameter of the conical inclined sidewall. The diameter of the pin-shaped sidewall is equal to the diameter of the positioning hole - 2X, where X is the positional degree of the positioning hole.

[0018] Furthermore,

[0019] It also includes limiting components, elastomers, and stop components;

[0020] One end of the elastic body is connected to the positioning member, and the other end of the elastic body is connected to the stop member. The stop member is detachably mounted on the seat.

[0021] The limiting member is detachably mounted on the positioning member, and when mounted on the positioning member, it is used to limit the position of the positioning member;

[0022] The elastic force of the elastic element acts on the positioning element, causing the conical end of the positioning element to extend into the positioning hole. By manipulating the moving element, the conical end can be pulled back in the opposite direction. At this time, the limiting element positions the positioning element to prevent it from returning to its original position under the action of the elastic force.

[0023] Furthermore,

[0024] The positioning element is a positioning pin, and both ends of the positioning pin are tapered.

[0025] The movable component is a movable handle;

[0026] The limiting component is a positioning pin, the elastic body is a spring, and the stop component is a baffle.

[0027] The base has through holes that penetrate both sides of the base. The positioning pin is movably disposed in the through hole. The bottom end of the moving handle is disposed on the positioning pin. The moving handle extends upward from the top of the through hole and is movably disposed in the waist-shaped hole on the top surface of the base.

[0028] The baffle is detachably fixed to the through hole opening on one side of the base body, the spring is fixed between the baffle and the corresponding end of the positioning pin, and the elastic force of the spring pushes the tapered end of the other end of the positioning pin to extend out of the through hole.

[0029] The top surface of the base has a through-hole 1 that extends to the through hole. The positioning pin has a corresponding through-hole 2. The positioning pin extends into the through-hole 2 through the through-hole 1.

[0030] An automotive parts inspection device incorporating the aforementioned conical alignment and positioning mechanism.

[0031] Including X-axis positioning mechanism, Y-axis positioning mechanism and Z-axis positioning mechanism;

[0032] At least one of the X-axis positioning mechanism and the Y-axis positioning mechanism includes the aforementioned conical alignment and positioning mechanism.

[0033] Furthermore,

[0034] The Y-axis positioning mechanism further includes a clamping positioning mechanism one, which includes a support one located on one side of the part in the Y-axis direction, a support two located on the other side of the part in the Y-axis direction, a line stopper located above the support one, and a pusher located above the support two.

[0035] The pusher pushes the part to move synchronously along the Y-axis until the opposite side of the part abuts against the contact line of the line stopper. The pusher and the line stopper clamp and fix the part along the Y-axis.

[0036] Furthermore,

[0037] The line stopper includes a positioning block, one side of which has an arc-shaped protrusion facing the part, and the arc-shaped protrusion facing the front end of the part is a vertical ridge.

[0038] The pushing component includes a push handle, a hinge mechanism, and a push head;

[0039] The push handle is connected to the push head via a hinge mechanism. The push head is cylindrical, with its circular end face facing the opposite side of the part. Pushing the push handle forward or backward causes the hinge mechanism to move the push head toward or away from the part. The direction of movement of the push head is set along the Y-axis. The line stop is set in the Y-axis direction and is opposite to the position of the push head.

[0040] Furthermore,

[0041] The Z-axis positioning mechanism includes a second clamping positioning mechanism, which includes a surface positioning member located below the part and a clamping member located above the part.

[0042] The lower surface of the part is provided on the surface positioning member, and the upper surface of the part is pressed with a clamping member. The clamping member and the surface positioning member position the part along the Z-axis direction.

[0043] Furthermore,

[0044] The surface positioning component includes a support three and a positioning block two horizontally disposed on the support three, wherein the upper surface of the positioning block two is a horizontal surface;

[0045] The clamping component includes a support four, and a hinge mechanism two is provided on the upper surface of the support four. A rotating handle is connected to the hinge mechanism two. One end of the pressure rod is also connected to the hinge mechanism two. The other end of the pressure rod is connected to a columnar pressure head facing the part. The circular end face of the pressure head faces the upper surface of the part. The pressure head and the positioning block two are aligned vertically along the Z-axis.

[0046] The second hinge mechanism includes two L-shaped hinge plates arranged opposite each other. The outer surfaces of the two L-shaped hinge plates facing away from each other are respectively hinged to the side walls of U-shaped hinge pieces. The U-shaped hinge pieces are connected to the lower part of the rotating handle. An I-shaped hinge block is provided in the U-shaped cavity of the U-shaped hinge piece. The upper part of the side wall of the I-shaped hinge block is hinged to the upper part of the side wall of the U-shaped hinge piece. A rotating hinge rod is provided in the lower I-shaped cavity of the I-shaped hinge block. The rotating hinge rod is hinged to the lower side wall of the I-shaped hinge block through the front hinge hole on one side. The rotating hinge rod is hinged to the inner side wall of the L-shaped hinge plate arranged opposite each other through the rear hinge hole on one side. Its hinge position is above and behind the position where the U-shaped hinge piece and the L-shaped hinge plate are hinged. A pressure rod is connected to the other side of the rotating hinge rod away from the L-shaped hinge plate.

[0047] An automotive parts inspection device,

[0048] It also includes an X-axis positioning mechanism, a Y-axis positioning mechanism, a Z-axis positioning mechanism, and a worktable with a cuboid part positioned in the middle;

[0049] The X-axis positioning mechanism includes the aforementioned conical alignment positioning mechanism. One conical alignment positioning mechanism is provided, which is located at one end near the long side of the part. A positioning hole is provided on the long side of the part that is aligned with the conical end.

[0050] The Y-axis positioning mechanism includes the clamping and positioning mechanism I described above. Two identical sets of the Y-axis positioning mechanisms are respectively set at both ends near the long side of the part. The line stop and the pusher are symmetrically set at the two long sides of the part. The pusher pushes one long side of the part until one long side of the part abuts against the line stop. Both line stops are located on the same straight line in the X direction.

[0051] The Z-axis positioning mechanism includes the clamping positioning mechanism two mentioned above. The Z-axis positioning mechanism is provided with three identical sets, two of which are located close to the end of the long side of the part and symmetrically arranged on both sides of the part along the long central axis of the part. The two clamping members are pressed precisely on the middle of the upper surface of the part and are symmetrical along the long central axis of the part.

[0052] Another set is located at the other end of the long side of the part, with the clamping element pressing precisely on the middle of the upper surface of the part and located on the long central axis of the part.

[0053] The technical solution provided by this invention may include the following beneficial effects:

[0054] 1. The positioning pin proposed in this invention has a sufficiently long tapered end, and the diameter of its tapered inclined sidewall includes the maximum error diameter of the positioning hole. When the positioning hole of the part and the tapered end of the positioning element are opposite each other (the two may not be completely aligned at this time), the tapered end is moved into the positioning hole. If the two are not completely aligned, the tapered inclined sidewall of the tapered end will push the sidewall of the positioning hole, causing the part to move until the tapered inclined sidewall of the tapered end completely abuts the hole wall of the positioning hole, leaving no gap between them. If the two are aligned, because the tapered end is long enough, the tapered inclined sidewall of the tapered end will also completely abut the hole wall of the positioning hole, preventing the part from shaking. This overcomes the problem in the prior art where the part of the positioning element that extends into the positioning hole is in the shape of a cylindrical pin, and the cylindrical pin is a sizing part, which inevitably leaves a gap between the cylindrical pin and the positioning hole. This gap will cause the part to shake and cause a large error in subsequent part inspection.

[0055] 2. In the prior art, the solution of using a zero-attachment to make surface contact with the opposite side of the part can cause errors in the positioning of the part in the Y-axis direction when the contact surface of the zero-attachment is not flat. That is, the part is not set perpendicular to the X-axis in the Y-axis direction, which leads to inaccurate detection. The contact line of the line abutting member of the present invention abuts against the opposite side of the part, reducing the contact area and overcoming the above-mentioned inaccurate detection.

[0056] 3. This invention includes at least one conical alignment and positioning mechanism, two sets of Y-axis positioning mechanisms, and three sets of Z-axis positioning mechanisms. The two sets of Y-axis positioning mechanisms are arranged as described above, with two sets of pushers pushing synchronously to facilitate the synchronous movement of part 32 along the Y-axis. Both line-stopping parts are located on the same straight line in the X-direction, ensuring that the width direction of the part does not deviate from the Y-direction after stopping. The overall positioning structure arranged in the above manner is reasonably distributed on the testing equipment, effectively stabilizing and fixing the long cuboid part in three dimensions. This secure fixing prevents the part from shaking at various points, improving the accuracy of subsequent testing. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the conical alignment and positioning mechanism of the present invention;

[0058] Figure 2 This is a schematic diagram of the clamping and positioning mechanism of the present invention;

[0059] Figure 3 This is a schematic diagram of the second clamping and positioning mechanism of the present invention;

[0060] Figure 4 This is a schematic diagram of the conical alignment and positioning mechanism and part positioning of the present invention;

[0061] Figure 5 This is a schematic diagram of the clamping and positioning mechanism of the present invention and the positioning of the part;

[0062] Figure 6 This is a schematic diagram of the clamping and positioning mechanism 2 of the present invention and the positioning of the part;

[0063] Figure 7 This is a schematic diagram of the part inspection device of the present invention;

[0064] Figure 8 This is a partial structural schematic diagram of the positioning pin of the present invention.

[0065] Wherein: 1-Seat body; 2-Positioning pin; 3-Conical end; 4-Moving handle; 5-Through hole; 6-Oval hole; 7-Positioning pin; 8-Spring; 9-Baffle; 10-Insertion hole one; 11-Insertion hole two; 12-Positioning hole; 13-Support one; 14-Support two; 15-Positioning block one; 16-Arched protrusion; 17-Thrust handle; 18-Push head; 19-Support three; 20-Positioning block two; 21-Support four; 22-Rotating handle; 23-Pressure rod; 24-Pressure head; 25-L-shaped hinge plate; 26-U-shaped hinge piece; 27-U-shaped cavity; 28 29-I-shaped hinge block; 30-Rotating hinge rod; 31-Front end hinge hole; 32-Rear end hinge hole; 33-Part; 34-L-shaped hinge piece; 35-Hinge seat; 36-Transmission hinge piece; 37-Connecting shaft; 38-Limiting bushing; 39-Lug; 40-Sliding gauge; 41-Straight bevel; 42-Arc-shaped edge; 43-Conical inclined sidewall; 44-Pin-shaped sidewall; 45-Inclined wall; 46-Conical alignment and positioning mechanism; 47-Clamping and positioning mechanism one; 48-Clamping and positioning mechanism two; 49-Workbench; 50-Position accuracy gauge. Detailed Implementation

[0066] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0067] In the description of this invention, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish and describe features, without any order or emphasis.

[0068] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0069] A conical alignment and positioning mechanism includes a base, a positioning component, and a moving component;

[0070] A positioning element is movably disposed on the base, and the end of the positioning element facing the positioning hole of the part is set as a conical end; a moving element is connected to the positioning element, which is used to drive the positioning element to move. When it moves toward the positioning hole, the diameter of the positioning hole is located within the open range of the diameter of the conical inclined sidewall, and the conical inclined sidewall of the conical end will completely block the positioning hole.

[0071] The specific shape of the conical end in this patent application is a three-dimensional structure with a conical inclined sidewall. The three-dimensional structure with the conical inclined sidewall includes, but is not limited to, a cone, a frustum, etc.

[0072] The moving component is manually or mechanically operated, causing the positioning component to move relative to the base. Because the conical end is sufficiently long, when the positioning hole of the part is opposite the conical end of the positioning component (they may not be completely aligned, meaning the central axis of the conical end does not coincide with the central axis of the positioning hole), the conical end is moved into the positioning hole. If the positioning hole and the conical end are not completely aligned (meaning the central axis of the conical end does not coincide with the central axis of the positioning hole), as long as the front end of the conical end can extend into the positioning hole, it is acceptable. Since the diameter of the positioning hole is within the numerical range of the diameter of the conical inclined sidewall... Within the enclosed opening, as the conical end extends into the positioning hole, its tapered, inclined sidewall comes into contact with the sidewall of the opening of the positioning hole. As the tapered, inclined sidewall continues to extend into the positioning hole, it pushes against the sidewall, causing the part to move until the tapered, inclined sidewall completely abuts the wall of the positioning hole, leaving no gap and preventing the part from wobbling along the X-axis. If they overlap, because the conical end is long enough, its tapered, inclined sidewall will also completely abut the wall of the positioning hole, preventing the part from wobbling along the X-axis. However, in existing technology, the portion of the positioning component extending into the positioning hole is a cylindrical pin, which is a sizing component. This inevitably leaves a gap between the cylindrical pin and the positioning hole, causing the part to wobble and resulting in significant errors in subsequent part inspection.

[0073] The conical alignment and positioning mechanism also includes a limiting component, an elastic body, and a stop component;

[0074] One end of the elastic body is connected to the positioning member, and the other end of the elastic body is connected to the stop member. The stop member is detachably mounted on the seat. The limiting member is detachably mounted on the positioning member. When the limiting member is mounted on the positioning member, it is used to limit the position of the positioning member. When the positioning member is not limited, the elastic force of the elastic member acts on the positioning member, causing the conical end of the positioning member to extend into the positioning hole (the positioning hole of the part in the background art). By manipulating the moving member, the conical end can be pulled back in the opposite direction. At this time, the limiting member positions the positioning member to prevent the positioning member from returning to its original position under the action of the elastic force.

[0075] The stop component can be removed to facilitate the replacement of the faulty elastic component. When the operator pulls the conical end back until it is completely removed from the positioning hole, the limiting component positions the positioning component, which facilitates the replacement of parts.

[0076] The present invention will be explained and illustrated below with a specific embodiment:

[0077] See appendix Figure 1-8 A device for inspecting automotive parts.

[0078] It includes an X-axis positioning mechanism (length direction positioning mechanism, same throughout the text), a Y-axis positioning mechanism (width direction positioning mechanism, same throughout the text) and a Z-axis positioning mechanism (thickness direction positioning mechanism, same throughout the text), wherein the X-axis positioning mechanism includes the aforementioned conical alignment positioning mechanism 46.

[0079] The conical alignment and positioning mechanism 46 includes a positioning pin 2 used as a positioning element, both ends of which are conical ends 3, specifically frustum-shaped in this embodiment; a moving handle 4 used as a moving element; a positioning pin 7 used as a limiting element; a spring 8 used as an elastic body; and a baffle 9 used as a stop element.

[0080] The base 1 has through holes 5 that penetrate both sides of the base 1. The positioning pin 2 is movably disposed in the through hole 5. The bottom end of the moving handle 4 is disposed on the positioning pin 2. The moving handle 4 extends upward from the top of the through hole 5. The moving handle 4 is movably disposed in the waist-shaped hole 6 opened on the top surface of the base 1.

[0081] The baffle 9 is detachably fixed to the through hole 5 opening on one side of the base 1. The spring 8 is fixed between the baffle 9 and the corresponding end of the positioning pin 2. When the spring is not compressed by the parts, it naturally straightens and pushes the tapered end 3 of the other end of the positioning pin 2 out of the through hole 5.

[0082] The top surface of the base 1 is provided with a through hole 10 that extends to the through hole 5. The positioning pin 2 is provided with a corresponding through hole 11. The positioning pin 7 extends into the through hole 11 through the through hole 10.

[0083] Pulling the movable handle 4 along the waist-shaped hole 6 to move it back and forth can correspondingly move the conical end toward or away from the positioning hole 12.

[0084] refer to Figure 4 and Figure 7 When part 32 is placed on the base 1, the positioning hole 12 is approximately aligned with the conical end 3, and the conical end 3 retracts under the compression of part 32. When the conical end faces the positioning hole 12, under the elastic force of the compressed spring, the conical end 3 extends into the positioning hole 12 until the conical inclined sidewall 43 of the conical end 3 completely blocks the positioning hole 12, leaving no gap between them. When it is necessary to replace or move part 32, the conical end 3 is pulled back from part 32 and positioned by the positioning pin 7.

[0085] The conical end 3 is a frustum and is disposed on the end face of the positioning member. The front end face of the conical end 3 is a narrow end, including four straight inclined sides 41 arranged in a rhomboid symmetrical pattern. Adjacent straight inclined sides 41 are connected by arc-shaped sides 42 with the same curvature. A pair of arc-shaped sides 42 and the side wall of the positioning member form a conical inclined side wall 43 with a gradually increasing diameter. Another pair of arc-shaped sides 42 and the straight inclined sides 41 and the end face of the positioning member form a pin-shaped side wall 44 with a fixed diameter. The pin-shaped side wall 44 and the conical inclined side wall 43 form an inclined wall 45.

[0086] The diameter of the positioning hole 12 is located within the open range of the diameter of the conical inclined sidewall 43. When the positioning hole 12 of the part 32 is opposite to the conical end 3 of the positioning pin 2 (the two may not be completely coincident at this time, meaning that the axis of the conical end does not coincide with the axis of the positioning hole), the conical end 3 is moved into the positioning hole 12. During the insertion process, it is ensured that the opposing conical inclined sidewalls 43 are arranged along the X-axis. If the two are not completely coincident (meaning that the axis of the conical end does not coincide with the axis of the positioning hole), as long as the pin-shaped sidewall can be inserted into the positioning hole 12, the position of the positioning hole 12 meets the requirements. At this time, as the conical end 3 continues to extend, due to the positioning... The diameter of hole 12 is located within the open range of the diameter of the conical inclined sidewall 43. Therefore, the conical inclined sidewall 43 of the conical end 3 will abut against the sidewall at the opening of the positioning hole 12 at a certain moment, and then push the sidewall at the opening of the positioning hole 12, causing the part 32 to move until the conical inclined sidewall 43 of the conical end 3 completely abuts against the corresponding hole wall of the positioning hole 12 along the X-axis direction, so that there is no gap between the two, and the part 32 is prevented from wobbling relative to the conical end 3 along the X-axis. If the two coincide, since the conical inclined sidewall 43 is long enough, the conical inclined sidewall 43 will also abut against the corresponding hole wall of the positioning hole 12 along the X-axis direction.

[0087] Meanwhile, the diameter of the pin-shaped sidewall is equal to the diameter of the positioning hole minus 2X, where X is the positional accuracy of the positioning hole. When it is necessary to test the positional accuracy of the opening on the part 32, such as the positioning hole 12, after fixing the part 32 on the worktable 49, the conical end 3 is passed through the guide hole of the fixed axis fixing seat (not shown) (the central axis of the conical end 3 is determined to be the standard central axis) and then passed out. If the pin-shaped sidewall 44 is completely inside the positioning hole 12, the positional accuracy of the positioning hole 12 meets the requirements. If the pin-shaped sidewall 44 is not partially inside the positioning hole 12, the positional accuracy of the positioning hole 12 does not meet the requirements.

[0088] Therefore, the tapered end of the above-mentioned structural design has two functions: one is to position part 32 along the X direction, and the other is to detect the taper of the hole in part 32.

[0089] See appendix Figure 1-8 In this embodiment, the Y-axis positioning mechanism includes a clamping positioning mechanism 47. The clamping positioning mechanism 47 includes a support 13 located on one side of the part 32 in the Y-axis direction, a support 14 located on the other side of the part 32 in the Y-axis direction, a line stop above the support 13, and a pusher above the support 14. The line stop includes a positioning block 15. One side of the positioning block 15 has an arc-shaped protrusion 16 with an arc-shaped cross-section facing the part 32. The arc-shaped protrusion 16 is a vertical ridge facing the front end of the part 32.

[0090] The pushing component includes a push handle 17, a hinge mechanism 1, and a push head 18; the pushing component pushes the part 32 to move synchronously along the Y-axis until the opposite side of the part 32 abuts against the vertical ridge-shaped contact line of the line stop, and the pushing component and the line stop clamp and fix the part 32 along the Y-axis.

[0091] The push handle 17 is connected to the push head 18 via a hinge mechanism. The push head 18 is cylindrical, with its circular end face facing the opposite side of the part 32. Pushing the push handle 17 forward or backward causes the hinge mechanism to move the push head 18 toward or away from the part 32. The direction of movement of the push head 18 is set along the Y-axis. The line stop is set in the Y-axis direction and is opposite to the position of the push head 18.

[0092] The purpose of fixing part 32 in the Y-axis direction is to prevent part 32 from shaking along the Y-axis direction and affecting the detection results. The contact line of the line stopper abuts against the opposite side of part 32 to reduce the contact area. However, the existing technology uses a zero-attachment method to make surface contact with the opposite side of part 32. When the contact surface of the zero-attachment is not flat, it will cause errors in the positioning of part 32 in the Y-axis direction. That is, part 32 is not set perpendicular to the X-direction in the Y-axis direction, which will lead to inaccurate detection.

[0093] By moving the push head 18 to push one side of the part 32, the part 32 moves synchronously along the Y-axis direction until its other side abuts against the vertical edge of the part 32, thus completing the fixation of the part 32 in the Y-axis direction.

[0094] The hinge mechanism includes an L-shaped hinge piece 33 fixed below the push handle 17. One end of the L-shaped hinge piece 33 is connected to the rear lug 38 of the hinge seat 34 fixed on the support 14. A long, flat transmission hinge piece 35 is hinged to each side of the bend of the L-shaped hinge piece 33. The other end of each transmission hinge piece 35 is hinged to one end of a connecting shaft 36. The middle of the transmission hinge piece 35 protrudes outwards. The other end of the connecting shaft 36 passes through the limiting sleeve 37 at the front end of the hinge seat 34 and is connected to the push head 18. Rotating the push handle 17 in the vertical plane causes the two sides of its bend to move the transmission hinge pieces 35 back and forth. The transmission hinge pieces 35, in turn, cause the connecting shaft 36 connected to them to move horizontally back and forth under the limiting action of the limiting sleeve 37.

[0095] See appendix Figure 1-8In this embodiment, the Z-axis positioning mechanism includes a clamping positioning mechanism 2 48, which includes a surface positioning member located below the part 32 and a clamping member located above the part 32.

[0096] The lower surface of the part 32 is provided on the surface positioning member, and the upper surface of the part 32 is pressed with a clamping member. The clamping member and the surface positioning member position the part 32 along the Z-axis direction.

[0097] The surface positioning component includes a support three 19 and a positioning block two 20 horizontally disposed on the support three 19, wherein the upper surface of the positioning block two 20 facing the part 32 is a horizontal surface;

[0098] The clamping component includes a support four 21, and a hinge mechanism two is provided on the upper surface of the support four 21. A rotating handle 22 is connected to the hinge mechanism two. One end of the hinge mechanism two is also connected to a pressure rod 23. The other end of the pressure rod 23 is connected to a columnar pressure head 24 facing the part 32. The circular end face of the pressure head 24 faces the upper surface of the part 32. The pressure head 24 and the positioning block two 20 are aligned vertically along the Z-axis.

[0099] The second hinge mechanism includes two L-shaped hinge plates 25 arranged opposite each other. The outer surfaces of the two L-shaped hinge plates 25, facing away from each other, are respectively hinged to the sidewalls of U-shaped hinge pieces 26. The U-shaped hinge pieces 26 are connected below the rotating handle 22. An I-shaped hinge block 28 is disposed within the U-shaped cavity 27 of the U-shaped hinge piece 26. The upper part of the sidewall of the I-shaped hinge block 28 is hinged to the upper part of the sidewall of the U-shaped hinge piece 26. The lower I-shaped cavity of the I-shaped hinge block 28... A rotating hinge rod 29 is provided inside. The rotating hinge rod 29 is hinged to the lower side wall of the I-shaped hinge block 28 through the front hinge hole 30 on one side. The rotating hinge rod 29 is hinged to the inner side wall of the L-shaped hinge plate 25 through the rear hinge hole 31 on one side. Its hinge position is above and behind the position where the U-shaped hinge piece 26 is hinged to the L-shaped hinge plate 25. A pressure rod 23 is connected to the other side of the rotating hinge rod 29 away from the L-shaped hinge plate 25.

[0100] In use, rotating the handle 22 in the vertical plane causes the U-shaped hinge piece 26 below to rotate synchronously. The U-shaped hinge piece 26 causes the rotating hinge rod 29, which is hinged to it, to rotate in the vertical plane. The rotating hinge rod 29 causes the pressure rod 23 and the pressure head 24 connected to its front end to rotate relative to the part 32 in the vertical plane.

[0101] The purpose of fixing part 32 in the Z-axis direction is to prevent part 32 from shaking along the Z-axis direction and affecting the test results.

[0102] See appendix Figure 1-8Especially attached Figure 8 In this embodiment, the automotive parts inspection device further includes a worktable 49;

[0103] A cuboid part 32 is positioned in the middle of the workbench 49;

[0104] The X-axis positioning mechanism includes the conical alignment positioning mechanism 46. One conical alignment positioning mechanism 46 is provided, which is located at one end close to the long side of the part 32. The long side of the part 32 is provided with a positioning hole 12 that is aligned with the conical end 3.

[0105] The Y-axis positioning mechanism includes the clamping positioning mechanism 47. Two identical sets of the Y-axis positioning mechanisms are respectively set at both ends near the long side of the part 32. The line stop and the pusher are symmetrically set at the two long sides of the part 32. The pusher pushes one long side of the part 32 until one long side of the part 32 abuts against the line stop. Both line stop are located on the same straight line in the X direction.

[0106] The Z-axis positioning mechanism includes the clamping positioning mechanism 48. The Z-axis positioning mechanism is provided in three identical sets, two of which are located close to one end of the long side of the part 32 and are symmetrically arranged on both sides of the part 32 along the long central axis of the part 32. The two clamping members are pressed precisely on the middle of the upper surface of the part 32 and are symmetrical along the long central axis of the part 32.

[0107] Another set is located at the other end near the long side of part 32, and the clamping member is pressed precisely at the middle of the upper surface of part 32 and located on the long central axis of part 32.

[0108] Practice has shown that at least one conical alignment and positioning mechanism 46, two sets of Y-axis positioning mechanisms, and three sets of Z-axis positioning mechanisms, as described above, are required to securely fix the long cuboid part 32 in the X, Y, and Z directions, preventing it from wobbling at various points. Simultaneously, by setting up two sets of Y-axis positioning mechanisms and two sets of pushers synchronously, the part 32 can be moved synchronously along the Y-axis. Both line-stopping parts are located on the same straight line in the X direction, ensuring that the width direction of the part 32 does not deviate from the Y direction after stopping.

[0109] In addition, a slide rail 40 is provided on one side of the part on the detection device, and a sliding gauge 39 is slidably disposed on the slide rail 40. The sliding gauge 39 can slide to the top of the part to detect the upper surface of the part. On the other side of the part, a plurality of position gauges 50 for detecting the position of holes on the part are provided on the detection device.

[0110] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A conical alignment and positioning mechanism, characterized in that, Includes the base, positioning components, and moving components; A positioning element is movably disposed on the seat body. One end of the positioning element is a conical end, which is a cone or frustum structure with a conical inclined sidewall. The positioning member is connected to a movable member, which is used to drive the positioning member to move toward the positioning hole of the part. The diameter of the positioning hole is located within the open range of the numerical range of the diameter of the conical inclined sidewall. The conical end is a truncated cone and is disposed on the end face of the positioning member. The front end face of the conical end is a narrow end, including four straight inclined sides arranged in a rhomboid symmetrical pattern. Adjacent straight inclined sides are connected by arc-shaped sides with the same curvature. A pair of arc-shaped sides and the side wall of the positioning member form a conical inclined side wall with a gradually increasing diameter. Another pair of straight inclined sides and the end face of the positioning member form a pin-shaped side wall with a fixed diameter. The pin-shaped side wall and the conical inclined side wall form an inclined wall. The diameter of the positioning hole is located within the open range of the numerical range of the diameter of the conical inclined sidewall. The diameter of the pin-shaped sidewall = the diameter of the positioning hole - 2X, where X is the position degree of the positioning hole. It also includes limiting components, elastomers, and stop components; One end of the elastic body is connected to the positioning member, and the other end of the elastic body is connected to the stop member. The stop member is detachably mounted on the seat. The limiting component is detachably mounted on the positioning component; The elastic force of the elastic body acts on the positioning member, causing the conical end of the positioning member to extend into the positioning hole. By manipulating the moving member, the conical end can be pulled back in the opposite direction. At this time, the limiting member positions the positioning member to prevent the positioning member from returning to its original position under the action of the elastic force. The positioning element is a positioning pin, and both ends of the positioning pin are tapered. The movable component is a movable handle; The limiting component is a positioning pin, the elastic body is a spring, and the stop component is a baffle. The base has through holes penetrating both sides of the base. The positioning pin is movably disposed in the through hole. The bottom end of the moving handle is disposed on the positioning pin. The moving handle extends upward from the top of the through hole and is movably disposed in the waist-shaped hole opened on the top surface of the base. The baffle is detachably fixed to the through hole opening on one side of the base body, the spring is fixed between the baffle and the corresponding end of the positioning pin, and the elastic force of the spring pushes the tapered end of the other end of the positioning pin to extend out of the through hole. The top surface of the base has a through-hole 1 that extends to the through hole. The positioning pin has a corresponding through-hole 2. The positioning pin extends into the through-hole 2 through the through-hole 1.

2. An automotive parts testing device, characterized in that, Including X-axis positioning mechanism, Y-axis positioning mechanism and Z-axis positioning mechanism; The X-axis positioning mechanism includes the conical alignment and positioning mechanism as described in claim 1.

3. The automotive parts inspection device as described in claim 2, characterized in that, The Y-axis positioning mechanism further includes a clamping positioning mechanism one, which includes a support one located on one side of the Y-axis direction, a support two located on the other side of the Y-axis direction, a line stopper located above the support one, and a pusher located above the support two. The pusher pushes the part to move synchronously along the Y-axis until the opposite side of the part abuts against the contact line of the line stopper. The pusher and the line stopper clamp and fix the part along the Y-axis.

4. The automotive parts inspection device as described in claim 3, characterized in that, The line stopper includes a positioning block, one side of which has an arc-shaped protrusion facing the part, and the arc-shaped protrusion facing the front end of the part is a vertical ridge. The pushing component includes a push handle, a hinge mechanism, and a push head; The push handle is connected to the push head via a hinge mechanism. The push head is cylindrical, with its circular end face facing the opposite side of the part. Pushing the push handle forward or backward causes the hinge mechanism to move the push head toward or away from the part. The direction of movement of the push head is set along the Y-axis. The line stop is set in the Y-axis direction and is opposite to the position of the push head.

5. The automotive parts inspection device as described in claim 2, characterized in that, The Z-axis positioning mechanism includes a second clamping positioning mechanism, which includes a surface positioning member located below the part and a clamping member located above the part. The lower surface of the part is provided on the surface positioning member, and the upper surface of the part is pressed with a clamping member. The clamping member and the surface positioning member position the part along the Z-axis direction.

6. The automotive parts inspection device as described in claim 5, characterized in that, The surface positioning component includes a support three and a positioning block two horizontally disposed on the support three, wherein the upper surface of the positioning block two is a horizontal surface; The clamping component includes a support four, and a hinge mechanism two is provided on the upper surface of the support four. A rotating handle is connected to the hinge mechanism two. One end of the pressure rod is also connected to the hinge mechanism two. The other end of the pressure rod is connected to a columnar pressure head facing the part. The circular end face of the pressure head faces the upper surface of the part. The pressure head and the positioning block two are aligned vertically along the Z-axis. The second hinge mechanism includes two L-shaped hinge plates arranged opposite each other. The outer surfaces of the two L-shaped hinge plates facing away from each other are respectively hinged to the side walls of U-shaped hinge pieces. The U-shaped hinge pieces are connected to the lower part of the rotating handle. An I-shaped hinge block is provided in the U-shaped cavity of the U-shaped hinge piece. The upper part of the side wall of the I-shaped hinge block is hinged to the upper part of the side wall of the U-shaped hinge piece. A rotating hinge rod is provided in the lower I-shaped cavity of the I-shaped hinge block. The rotating hinge rod is hinged to the lower side wall of the I-shaped hinge block through the front hinge hole on one side. The rotating hinge rod is hinged to the inner side wall of the L-shaped hinge plate arranged opposite each other through the rear hinge hole on one side. Its hinge position is above and behind the position where the U-shaped hinge piece and the L-shaped hinge plate are hinged. A pressure rod is connected to the other side of the rotating hinge rod away from the L-shaped hinge plate.

7. An automotive parts inspection device, characterized in that, It also includes an X-axis positioning mechanism, a Y-axis positioning mechanism, a Z-axis positioning mechanism, and a worktable with a cuboid part positioned in the middle; The X-axis positioning mechanism includes the conical alignment positioning mechanism as described in claim 1. One conical alignment positioning mechanism is provided, which is located at one end near the long side of the part. The long side of the part has a positioning hole that is aligned with the conical end. The Y-axis positioning mechanism includes a clamping positioning mechanism one, which includes a support one located on one side of the Y-axis direction, a support two located on the other side of the Y-axis direction, a line stopper located above the support one, and a pusher located above the support two. The pusher pushes the part to move synchronously along the Y-axis until the opposite side of the part abuts against the contact line of the line stopper. The pusher and the line stopper clamp and fix the part along the Y-axis. The Y-axis positioning mechanism is provided in two identical sets, respectively located at the two ends of the long side of the part. The line stop and the pusher are symmetrically arranged on the two long sides of the part. The pusher pushes one long side of the part until the long side of the part abuts against the line stop. Both line stop are located on the same straight line in the X direction. The Z-axis positioning mechanism includes a second clamping positioning mechanism, which includes a surface positioning member located below the part and a clamping member located above the part. The lower surface of the part is provided on the surface positioning member, and the upper surface of the part is pressed with a clamping member. The clamping member and the surface positioning member position the part along the Z-axis direction. The Z-axis positioning mechanism is set in three identical sets, with two sets located close to the end of the long side of the part and symmetrically arranged on both sides of the part along the long central axis of the part. The two clamping parts press precisely on the middle of the upper surface of the part and are symmetrical along the long central axis of the part. Another set is located at the other end of the long side of the part, with the clamping element pressing precisely on the middle of the upper surface of the part and located on the long central axis of the part.

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