Special-shaped workpiece positioning detection assembly

Abstract

The utility model relates to the technical field of detection, and one embodiment of the utility model provides a special-shaped workpiece positioning detection assembly which comprises a rack, a shaft part is rotatably arranged relative to the rack, a transverse moving frame is slidably arranged relative to the rack, an abutting part is arranged on the transverse moving frame in a swinging mode, and after the transverse moving frame is configured to move, the abutting part abuts against a plane part or cancels abutting, and the shaft part is positioned on the plane part. The number of the abutting parts is two, the two abutting parts abut against the two adjacent plane parts respectively, a receding space is formed between the two abutting parts and used for containing one arc-shaped part, and the rotation angle sensor is arranged on the transverse moving frame and used for detecting the swing angle of the abutting parts. According to the technical scheme, the technical problem that in the prior art, the positioning detection efficiency of the special-shaped workpiece is low is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of detection technology, and more specifically, to a positioning and detection component for irregularly shaped workpieces. Background Technology

[0002] In the field of machining, the positioning and inspection of irregularly shaped shaft parts has always been a critical and challenging aspect. Traditional positioning and inspection methods have many obvious shortcomings when dealing with irregularly shaped shaft parts with special shapes (such as alternating curved and flat sections), making it difficult to meet the needs of modern high-precision machining.

[0003] Early positioning and inspection of irregularly shaped shaft parts primarily relied on high-precision scanning technology, followed by positioning via motor-driven rotation. While this method could acquire shape information to some extent, the entire process was cumbersome and time-consuming. High-precision scanning requires specialized equipment and considerable time, and the processing and analysis of the scan results also incur significant technical and time costs. During the motor-driven rotation positioning process, positioning errors are prone to occur due to the motor's control precision and the irregular shape of the part itself, leading to inaccurate positioning. This method significantly limits the improvement of production efficiency and cannot meet the demands of large-scale, high-efficiency production.

[0004] Traditional positioning and inspection methods also have problems with stability and accuracy. Due to the complex shape of irregular shaft parts, a single positioning method is insufficient to ensure the stability of the parts during machining or inspection. During machining or inspection, even slight vibrations or external forces can easily cause displacement of the parts, affecting the accuracy of positioning and the precision of machining. Moreover, traditional methods often fail to fully utilize the shape characteristics of the parts for precise positioning, resulting in low positioning accuracy and failing to meet the stringent requirements of high-precision machining for part positioning. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a positioning and detection component for irregularly shaped workpieces, which solves the technical problem of slow positioning and detection efficiency of irregularly shaped workpieces in the prior art.

[0006] According to one aspect, at least one embodiment of this disclosure provides a positioning and detection assembly for irregularly shaped workpieces, used for positioning and detecting irregularly shaped shaft-like parts, the shaft-like parts having arc-shaped portions and flat portions, wherein the arc-shaped portions and the flat portions are both alternately arranged in a plurality of configurations, including:

[0007] A frame, wherein the shaft-like parts are rotatably configured relative to the frame;

[0008] A transverse frame, which is slidably disposed relative to the frame;

[0009] An abutment member is oscillatingly mounted on the transverse frame. The transverse frame is configured such that, after being moved, the abutment member abuts or cancels abutment with the planar portion. There are two abutment members, each abutting with two adjacent planar portions respectively. A clearance space is formed between the two abutment members, which is used to accommodate one of the arc-shaped portions.

[0010] An angle sensor is mounted on the transverse frame to detect the swing angle of the abutment member.

[0011] For example, at least one embodiment of this disclosure provides a positioning and detection component for irregularly shaped workpieces, the positioning and detection component for irregularly shaped workpieces further comprising:

[0012] A connecting rod is provided on the abutment member, and the central axis of the connecting rod is concentric with the rotation axis of the abutment member;

[0013] The first link is hinged to the connecting rod;

[0014] The second link is hinged to the transverse frame and is hinged to the first link;

[0015] A detection rod is mounted on the second connecting rod and is coaxial with the rotation axis of the second connecting rod. The rotation angle sensor detects the swing angle of the abutment by detecting the rotation angle of the detection rod.

[0016] For example, in at least one embodiment of this disclosure, an irregularly shaped workpiece positioning and detection assembly is provided, wherein the abutment member further includes:

[0017] A hinge shaft, which is used for hinged connection between the first link and the second link;

[0018] The first gear is disposed at the end of the first connecting rod;

[0019] The second gear is mounted on the detection rod and meshes with the first gear, with the first gear revolving around the second gear.

[0020] For example, at least one embodiment of this disclosure provides a positioning and detection component for irregularly shaped workpieces, wherein the ratio of the number of teeth of the first gear and the second gear is N, and N is greater than one.

[0021] For example, at least one embodiment of this disclosure provides a positioning and detection component for irregularly shaped workpieces, which further includes:

[0022] A clamping element, rotatably mounted on the frame, is used to clamp the shaft-type parts;

[0023] A clamping member is slidably mounted on the frame, and the clamping member can tighten or loosen its clamping on the shaft-like parts after sliding.

[0024] A slide rail is mounted on the frame, and the transverse frame is slidably mounted on the slide rail.

[0025] For example, at least one embodiment of this disclosure provides a positioning and detection component for irregularly shaped workpieces, the positioning and detection component for irregularly shaped workpieces further comprising:

[0026] A first linear drive unit is disposed on the frame and is used to drive the transverse frame to slide.

[0027] A second linear drive unit, disposed on the frame, is used to drive the clamping member to clamp or de-clamp the shaft-like parts.

[0028] For example, at least one embodiment of this disclosure provides a positioning and detection component for irregularly shaped workpieces, wherein the abutting member has an abutting surface and an arc-shaped protective surface, the abutting surface and the arc-shaped protective surface are smoothly transitioned, the abutting surface is used to abut against the flat portion, and the arc-shaped protective surface is used to prevent the abutting member from damaging the shaft-like part.

[0029] For example, at least one embodiment of this disclosure provides a positioning and detection component for irregularly shaped workpieces, the positioning and detection component for irregularly shaped workpieces further comprising:

[0030] A slag baffle is provided on the transverse frame, and an installation space is formed between the frame and the slag baffle. The first linear drive and the slide rail are both provided in the installation space.

[0031] For example, at least one embodiment of this disclosure provides a positioning and detection component for irregularly shaped workpieces, wherein the included angle between the two abutting surfaces is equal to the included angle between two adjacent planar portions.

[0032] The beneficial effects of the embodiments disclosed herein are as follows:

[0033] This disclosure presents a positioning and detection component for irregularly shaped workpieces. For irregularly shaped shaft parts with alternating curved and flat sections, this component's design effectively adapts to their unique shape, achieving precise positioning. The sliding frame relative to the machine frame allows the abutment to quickly position the shaft part. After positioning, it moves out of its designated position, facilitating machining by grinding tools. Existing technologies rely on high-precision scanning followed by motor-driven part rotation for positioning, a cumbersome and time-consuming process. This device utilizes abutment components with a mechanical structure for positioning. Once the shaft part is in place, the sliding of the sliding frame causes two abutment components to quickly engage with adjacent flat sections, creating space to precisely accommodate the curved section and instantly locking the part's position. The swing angle of the swinging abutment components is received by an angle sensor, adjusting the shaft part's position based on the swing angle, resulting in higher efficiency. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of one embodiment of the present disclosure;

[0036] Figure 2 for Figure 1 A schematic diagram of the structure of the hidden slag baffle in the embodiment;

[0037] Figure 3 for Figure 1 A magnified structural diagram of A in the middle;

[0038] In the diagram: Shaft-1, Arc-shaped part-101, Flat part-102, Frame-2, Transverse frame-3, Abutting part-4, Clearance space-401, Clearance space-401, Abutting surface-402, Arc-shaped protective surface-403, Connecting rod-404, First connecting rod-405, Second connecting rod-406, Detection rod-407, Hinge shaft-408, First gear-409, Second gear-410, Clamping part-5, Top clamping part-6, Slide rail-7, First linear drive part-8, Slag baffle-10, Installation space-1001, Angle sensor-13. Detailed Implementation

[0039] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0040] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0041] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0042] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 this disclosure.

[0044] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] like Figures 1-3As shown, a positioning and detection assembly for irregularly shaped workpieces is provided in one embodiment of this disclosure. This assembly is used for positioning and detecting irregularly shaped shaft-like parts 1. The shaft-like parts 1 have an arc-shaped portion 101 and a flat portion 102, both of which are alternately arranged. The assembly includes a frame 2, with the shaft-like parts 1 rotatably arranged relative to the frame 2. A transverse frame 3 is slidably arranged relative to the frame 2. An abutment member 4 is oscillatingly arranged on the transverse frame 3. The transverse frame 3 is configured such that after it moves, the abutment member 4 abuts or cancels abutment with the flat portion 102. There are two abutment members 4, which abut against two adjacent flat portions 102 respectively. A clearance space 401 is formed between the two abutment members 4 to accommodate one arc-shaped portion 101. An angle sensor 13 is arranged on the transverse frame 3 to detect the swing angle of the abutment member 4.

[0046] For example, such as Figures 1-3 As shown, for irregularly shaped shaft parts 1 with alternating curved portions 101 and flat portions 102, the design of this positioning and detection assembly can well adapt to their special shape and achieve precise positioning. The transverse frame 3 is slidably set relative to the frame 2. This feature allows the abutment 4 to quickly position the shaft part 1. After positioning, it moves out of the positioning position to facilitate the grinding tool's processing of the shaft part 1. Existing technology relies on high-precision scanning followed by motor-driven rotation of the part for positioning, which is cumbersome and time-consuming. This device achieves positioning using the abutment 4 of the mechanical structure. When the shaft part 1 is placed in place, the sliding of the transverse frame 3 causes the two abutment 4 to quickly abut against the adjacent flat portions 102, making room 401 to precisely accommodate the curved portion 101 and instantly lock the part's position. The swing angle of the swinging abutment 4 is received by the angle sensor 13, and the position of the shaft part 1 is adjusted according to the swing angle of the abutment 4, resulting in higher efficiency.

[0047] The abutment 4 is mounted on the transverse frame 3, and the two abutment 4 can abut against two adjacent flat parts 102 respectively, forming a clearance space 401 that can accurately accommodate an arc-shaped part 101. This structure allows the device to accurately abut against the flat parts 102 by moving the transverse frame 3 when positioning irregularly shaped shaft parts 1, based on their unique alternating arc and flat shape characteristics, thus confirming the position of the part. Moreover, since the two abutment 4 abut against adjacent flat parts 102 respectively, this multi-point abutment method further enhances the stability and accuracy of positioning detection. Even under conditions of slight vibration or external force interference that may occur during processing or inspection, the irregularly shaped shaft parts 1 can still be reliably abutted against the flat parts 102 by the abutment 4, improving the reliability of the device.

[0048] The shaft part 1 has an irregular structure with alternating arc-shaped parts 101 and flat parts 102. Two abutting parts 4 abut tightly against adjacent flat parts 102, and are stably detected from both sides. The clearance space 401 fits the contour of the arc-shaped part 101, ensuring that the arc-shaped part 101 will not affect the positioning accuracy, ensuring that the subsequent grinding machining allowance is uniform and accurate, improving the grinding quality, reducing the scrap rate, and meeting the needs of high-precision machining.

[0049] In some examples, the abutment 4 also includes a connecting rod 404, which is disposed on the abutment 4. The central axis of the connecting rod 404 is concentric with the rotation axis of the abutment 4. The first connecting rod 405 is hinged on the connecting rod 404. The second connecting rod 406 is hinged on the transverse frame 3. The second connecting rod 406 is hinged to the first connecting rod 405. The detection rod 407 is disposed on the second connecting rod 406 and is coaxial with the rotation axis of the second connecting rod 406. The rotation angle sensor 13 detects the swing angle of the abutment 4 by detecting the rotation angle of the detection rod 407.

[0050] For example, such as Figure 3 As shown, the central axis of the connecting rod 404 is concentrically set with the rotation axis of the abutment 4. This design ensures that the rotation of the abutment 4 can be accurately transmitted to the first connecting rod 405. When the abutment 4 rotates, the concentric connecting rod 404 rotates synchronously, driving the first connecting rod 405 to move. The concentric setting reduces rotational deviations caused by factors such as eccentricity, allowing for precise transmission of rotational information and providing an accurate basis for subsequent detection. The hinged structure of the first connecting rod 405 and the second connecting rod 406 forms a linkage transmission system. By rationally designing the length of the connecting rods and the hinge position, the amplification effect of the swing angle of the abutment 4 can be achieved. When the abutment 4 undergoes a small rotation, the detection rod 407 will experience a relatively large change in rotation angle after transmission through the linkage system. In this way, when the angle sensor 13 detects the rotation angle of the detection rod 407, it can more clearly and accurately capture the rotation of the abutment 4, improving the sensitivity and accuracy of the detection. In some high-precision detection scenarios, this angular magnification effect can improve detection accuracy by several times.

[0051] The detection rod 407 and the second connecting rod 406 are coaxially aligned, ensuring that the angle sensor 13 detects the actual rotation angle of the second connecting rod 406, avoiding additional measurement errors caused by misalignment. This coaxial design makes the detection results more reliable and accurately reflects the rotation state of the abutment part 4. During long-term testing, this stability effectively reduces inaccurate detection caused by error accumulation.

[0052] In some examples, the abutment 4 also includes a hinge shaft 408 for hinged connection of the first link 405 and the second link 406. A first gear 409 is disposed at the end of the first link 405, and a second gear 410 is disposed on the detection rod 407. The second gear 410 meshes with the first gear 409, and the first gear 409 revolves around the second gear 410.

[0053] For example, such as Figure 3 As shown, when the abutment 4 rotates, the first connecting rod 405 drives the first gear 409 to revolve. This revolve motion, combined with the meshing transmission between the first gear 409 and the second gear 410, causes the meshing point between the first gear 409 and the second gear 410 to constantly change due to the revolve motion of the first gear 409. Even if there are manufacturing errors or wear at a single meshing point, the combined effect of multiple meshing points can average out the impact of these errors. In addition, the revolve motion can also allow the gears to mesh at different positions and angles, reducing the accumulation of errors caused by local wear or manufacturing defects.

[0054] As the first gear 409 revolves around the second gear 410, it disperses the force between the first connecting rod 405 and the second connecting rod 406 to multiple directions and multiple meshing points. This force dispersion reduces the concentrated load on individual components, lowering the risk of component damage due to overload. Simultaneously, the revolving motion also provides a buffering effect; when the detection system is subjected to external vibrations or impacts, the gear's rotation absorbs and disperses this energy, reducing the impact on the detection rod 407 and the angle sensor 13, thus improving the overall stability of the detection system.

[0055] In some examples, the ratio of the number of teeth of the first gear 409 to the number of teeth of the second gear 410 is N, where N is greater than one.

[0056] For example, such as Figure 3 As shown, when calculating the rotation angle of the abutment 4, the rotation angle is limited by the first connecting rod 405. The rotation angle is X. When the revolution angle of the first gear 409 along the second gear 410 is Y, X = Y / 360. When the tooth ratio N of the first gear 409 is greater than 1, the second gear 410 has more teeth than the first gear 409. According to the gear transmission principle, the rotation angle of the detection rod 407 will be amplified by N * Y times. That is, the actual rotation angle is X = N * Y. Simultaneously, after the gear manufacturing error is amplified by N times, the error transmitted to the abutment 4 is only 1 / N of the original value.

[0057] In some examples, a clamping member 5 is also included, which is rotatably mounted on the frame 2 for clamping shaft parts 1. A clamping member 6 is slidably mounted on the frame 2, which clamps or releases the shaft parts 1 after sliding. A slide rail 117 is mounted on the frame 2, and a transverse frame 3 is slidably mounted on the slide rail 117.

[0058] For example, such as Figure 1 As shown, the clamping member 5 is rotatably mounted on the frame 2 to clamp the shaft part 1, applying constraint in the circumferential direction. This, combined with the tightening member 6 which slides to tighten or loosen the shaft part 1, and the precise contact between the abutting member 4 and the flat surface 102, creates a comprehensive, three-dimensional positioning system. In high-precision grinding scenarios, the shaft part 1 is subjected to evenly distributed and coordinated forces from multiple directions, avoiding offset or wobbling caused by insufficient positioning in a single direction.

[0059] The transverse frame 3 slides on the slide rail 7. The high-precision, low-friction design of the slide rail 7 ensures that the movement trajectory of the transverse frame 3 is straight and smooth, without jamming or deviation. During repeated positioning operations, the contact accuracy between the contact part 4 and the flat part 102 remains constant. Although the overall device has multiple functions, its mechanical structure is compact and logically clear. The core action system is built on the frame 2. Each component, such as the clamping part 5, the clamping part 6, and the transverse frame 3, is independent yet interconnected, making it easy to disassemble and troubleshoot during maintenance.

[0060] In some examples, the irregular workpiece positioning and detection assembly also includes a first linear drive 8, which is mounted on the frame 2 and is used to drive the transverse frame 3 to slide. A second linear drive is mounted on the frame 2 and is used to drive the clamping member 6 to clamp or unclamp the shaft part 1.

[0061] For example, such as Figure 2 As shown, when positioning shaft parts 1 of different specifications, the clamping force and position are precisely adjusted by the second linear drive unit driving the clamping member 6, and the clamping member 5 rotates as needed to adjust the clamping degree, easily adapting to changes. For example, when processing small-diameter short shafts, the clamping and clamping forces are appropriately reduced to prevent part deformation; when processing large-diameter long shafts, the force is increased to ensure stability. For enterprises that mass-produce multiple models of shaft parts, there is no need to frequently change tooling. When switching part types, the settings of both can be simply adjusted to improve production line efficiency. The first linear drive unit 8 drives the transverse frame 3 to slide on the slide rail 7, so that the abutment member 4 quickly and smoothly approaches and abuts the flat part 102, eliminating the limitations of slow and large error of manual operation; the second linear drive unit controls the movement of the clamping member 6 with the same high efficiency and precision.

[0062] In some examples, the abutment 4 has an abutment surface 402 and an arc-shaped protective surface 403, with the abutment surface 402 and the arc-shaped protective surface 403 smoothly transitioning. The abutment surface 402 is used to abut against the flat part 102, and the arc-shaped protective surface 403 is used to prevent the abutment 4 from damaging the shaft part 1.

[0063] For example, such as Figure 1 As shown, the abutment surface 402 of the abutment member 4 is specifically designed to abut against the flat portion 102 of the shaft part 1. Its design enables a tight fit with the flat portion 102. During positioning, the movement of the transverse frame 3 drives the abutment member 4, ensuring that the abutment surface 402 accurately contacts the flat portion 102, thereby precisely positioning the shaft part 1 in the desired position. For example, when performing high-precision grinding on the shaft part 1, the positioning error of the part must be controlled within a very small range. The precise abutment between the abutment surface 402 and the flat portion 102 effectively meets this precision requirement, ensuring that subsequent grinding operations can be performed in the accurate position, thus improving machining accuracy and product quality.

[0064] The arc-shaped protective surface 403 also effectively prevents the abutment part 4 from damaging the shaft part 1. During long-term production, without this protective design, the abutment part 4 might scratch the surface of the shaft part 1 due to collision or friction during rotation, affecting the quality and appearance of the part. The arc-shaped protective surface 403 prevents this from happening, ensuring the integrity of the shaft part 1, reducing the scrap rate, and improving the product qualification rate.

[0065] In some examples, the irregular workpiece positioning and detection assembly also includes a slag baffle 10, which is disposed on the transverse frame 3. An installation space 1001 is formed between the frame 2 and the slag baffle 10. The first linear drive 8 and the slide rail 117 are both disposed within the installation space 1001.

[0066] For example, such as Figure 1 , Figure 2 As shown, during the machining process of shaft parts 1, operations such as grinding generate a large amount of waste residue, chips, and other impurities. The baffle plate 10 is mounted on the transverse frame 3 and is movable relative to the machine frame 2. It effectively blocks these waste residues and chips generated during machining, preventing them from entering the installation space 1001, thus providing excellent protection for important internal components such as the first linear drive component 8 and the slide rail 7. During prolonged grinding, without the protection of the baffle plate 10, waste residue and chips might enter the transmission parts of the first linear drive component 8, leading to problems such as poor transmission and accelerated component wear. The presence of the baffle plate 10 greatly reduces this risk and ensures the normal operation of the internal components.

[0067] Meanwhile, the baffle plate 10 also reduces the impact of external dust and debris on the internal components of the installation space 1001. In production environments such as workshops, there is often a lot of dust in the air. If this dust enters the internal components, it may accumulate on the surface of the slide rail 7, increasing the coefficient of friction and affecting the smoothness of the sliding of the transverse frame 3, or it may adhere to the electrical components or mechanical transmission components of the first linear drive 8, causing malfunctions. The baffle plate 10 can isolate external dust to a certain extent, maintain a relatively clean working environment within the installation space 1001, and improve the reliability and service life of the internal components.

[0068] In some examples, the included angle between the two abutting surfaces 402 is equal to the included angle between two adjacent planar portions 102.

[0069] For example, such as Figure 1 As shown, the included angle of the two abutting surfaces 402 is exactly the same as the included angle of the adjacent flat part 102, so that the abutting part 4 and the shaft part 1 can make surface contact. By detecting the rotation angle of the two abutting parts 4, the error caused by the detection of a single abutting part 4 is reduced.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A special-shaped workpiece positioning and detection assembly for positioning and detection of a special-shaped shaft part (1), the shaft part (1) having arc-shaped portions (101) and planar portions (102), the arc-shaped portions (101) and the planar portions (102) being alternately arranged, characterized in that, Comprise: A rack (2), the shaft parts (1) are arranged for rotation relative to the rack (2); Crossing frame (3), the crossing frame (3) is arranged for sliding relative to the rack (2); The abutting member (4) is swing arranged on the crossing frame (3), the crossing frame (3) is configured to move, the abutting member (4) is in abutment or cancel abutment with the plane part (102), the abutting member (4) is two, two abutting members (4) are respectively in abutment with two adjacent plane parts (102), two abutting members (4) form a space (401) for accommodating an arc-shaped part (101) between them; The corner sensor (13) is arranged on the crossing frame (3), and is used for detecting the swing angle of the abutting member (4).

2. The profiled workpiece positioning and detection assembly of claim 1, wherein, The special-shaped workpiece positioning detection assembly further comprises: Connecting rod (404), the connecting rod (404) is arranged on the abutting member (4), and the central axis of the connecting rod (404) is concentric with the rotation axis of the abutting member (4); First connecting rod (405), the first connecting rod (405) is hingedly arranged on the connecting rod (404); Second connecting rod (406), the second connecting rod (406) is hingedly arranged on the crossing frame (3), and the second connecting rod (406) is hingedly arranged with the first connecting rod (405); Detection rod (407), the detection rod (407) is arranged on the second connecting rod (406), and is coaxially arranged with the rotation axis of the second connecting rod (406), and the corner sensor (13) detects the swing angle of the abutting member (4) by detecting the rotation angle of the detection rod (407).

3. The profiled workpiece positioning and detection assembly of claim 2, wherein, The abutting member (4) further comprises: Hinge shaft (408), the hinge shaft (408) is used for the hinge of the first connecting rod (405) and the second connecting rod (406); First gear (409), the first gear (409) is arranged at the end of the first connecting rod (405); Second gear (410), the second gear (410) is arranged on the detection rod (407), the second gear (410) is meshed with the first gear (409), and the first gear (409) revolves around the second gear (410).

4. The profiled workpiece positioning and detection assembly of claim 3, wherein, The tooth number ratio of the first gear (409) and the second gear (410) is N, and N is greater than one.

5. 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arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) is arranged on the rack (2), and the top tight member (6) ​ 6. The profiled workpiece positioning and detection assembly of claim 5, wherein, ​ A first linear driving member (8) is arranged on the frame (2) and used to drive the transverse frame (3) to slide; A second linear driving member is arranged on the frame (2) and used to drive the top pressing member (6) to press or cancel pressing the shaft-like part (1).

7. The profiled workpiece positioning and detection assembly of claim 1, wherein, The abutting member (4) has an abutting surface (402) and an arc-shaped protection surface (403), the abutting surface (402) and the arc-shaped protection surface (403) are smoothly connected, the abutting surface (402) is used to abut with the plane part (102), and the arc-shaped protection surface (403) is used to prevent the abutting member (4) from damaging the shaft-like part (1).

8. The profiled workpiece positioning and detection assembly of claim 6, wherein, The special-shaped workpiece positioning and detecting assembly further comprises: A slag blocking plate (10) is arranged on the transverse frame (3), and a mounting space (1001) is formed between the frame (2) and the slag blocking plate (10), and the first linear driving member (8) and the slide rail (7) are arranged in the mounting space (1001).

9. The profiled workpiece positioning and detection assembly of claim 7, wherein, The included angle of two abutting surfaces (402) is equal to the included angle between two adjacent plane parts (102).

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