Hardness detection device for transmission machine part processing

Abstract

The invention relates to the technical field of hardness detection, and discloses a hardness detection device for transmission machine part machining, the hardness detection device comprises a hardness detection equipment body and a plurality of gear bodies, and the hardness detection equipment body is provided with a centrifugal detection assembly. By means of the arrangement, when the multiple gear bodies move to the positions corresponding to the detection heads, the gear bodies can slide by a certain distance under the action of the elastic force of the springs and the resilience force of the gear bodies and the detection heads, the resilience distances of the gear bodies with different hardness are different, and the gear bodies with different hardness are sorted according to different resilience moving distances; and the gears are collected into the first sorting groove and the second sorting groove in a centralized mode, the centrifugal detection assembly can efficiently process a large number of gears, the gears with different hardness are rapidly distinguished through rotation and separation, and the low-efficiency process that the gears are detected one by one in a traditional detection method is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of hardness detection, in particular to a hardness detection device for machining transmission machinery parts. Background Art

[0002] Mechanical transmission is widely used in mechanical engineering. It mainly refers to the transmission of power and motion by mechanical means. It is divided into two categories: friction transmission, which transmits power by friction between mechanical parts; and meshing transmission, which transmits power or motion by meshing between the active and driven parts or with the help of intermediate parts. For example, gears. The so-called hardness refers to the ability of a material to resist the pressure of a harder object on its surface. Different units have different test methods according to different test methods and applicable scopes, which are suitable for materials or occasions with different characteristics. In the patent application with application announcement number CN220894034U, it includes a support assembly, a testing table, a placing table, a support plate, an electric push rod, a movable plate, a cylinder and a testing head. The placing table is fixed to the top of the testing table, the support plate is fixed to the rear side of the top of the testing table, the electric push rod is fixed to the top of the support plate, and the bottom extends to the inside of the support plate, the movable plate is fixed to the bottom of the electric push rod, the cylinder is fixed to the top of the movable plate, and the bottom extends to the outside of the movable plate, and the testing head is fixed to the bottom of the cylinder. The beneficial effect achieved by this utility model is: through the arrangement of the electric push rod and the cylinder, the use position of the testing head can be easily adjusted to facilitate hardness testing of mechanical parts. Through the arrangement of the fixed assembly, the detection effect of mechanical parts can be improved, and the safety during detection can also be improved.

[0003] In the prior art including the above-mentioned patents, during the hardness testing process of existing mechanical transmission parts, it is usually necessary to use a hardness tester to test the parts one by one. Testing the transmission parts one by one will consume a lot of time, resulting in low test efficiency. Especially when a large number of parts need to be tested, this inefficient testing method will seriously affect the production progress. If the hardness testing equipment is difficult to support the testing of large quantities of mechanical parts, it will directly lead to low testing efficiency. In large-scale production, it is necessary to quickly and accurately test the hardness of a large number of mechanical parts to ensure product quality and production progress. Summary of the Invention

[0004] The problem to be solved by the present invention is that it is difficult for existing hardness testing equipment to test mechanical parts in large quantities.

[0005] To solve the above technical problems, the technical solution of the present invention is: a hardness testing device for machining transmission machinery parts, comprising a hardness testing device body and a plurality of gear bodies, wherein the hardness testing device body is provided with a centrifugal testing component; The centrifugal detection assembly includes a centrifugal disk rotatably connected to the hardness detection device body. A hardness range adjustment assembly is provided on the centrifugal disk. A motor body is installed inside the hardness detection device body. The output end of the motor body is connected to the centrifugal disk through a rotating shaft. A plurality of guide rail frames are fixedly arranged on the centrifugal disk. A clamping mechanism is arranged on each guide rail frame. A plurality of gear bodies are respectively arranged on the plurality of clamping mechanisms. A rebound plate is fixedly arranged on each guide rail frame. A rebound rod is slidably connected to the rebound plate, and the rebound rod penetrates from one side of the rebound plate to the other side. One end of the rebound rod is fixedly provided with a detection head, and the other end of the rebound rod is fixedly provided with a spring body. A spring fixing plate is sleeved on the outer wall of the rebound rod, and both ends of the spring fixing plate are fixedly connected to the spring body and the rebound plate respectively. A sorting seat is slidably arranged on the inner wall of each guide rail frame. A sorting bag is fixedly arranged on the hardness detection device body, and the sorting bag is located below the centrifugal disk. A plurality of blanking grooves are formed on the centrifugal disk. The tops of the plurality of blanking grooves are respectively communicated with the interiors of the plurality of guide rail frames, and the bottoms of the plurality of blanking grooves are respectively communicated with the interior of the sorting bag.

[0006] Preferably, a rotating groove matching the centrifugal disk is formed on the hardness detection device body, and the plurality of guide rail frames are distributed in a circular array on the centrifugal disk.

[0007] Preferably, each clamping mechanism includes a sliding rail seat slidable on the guide rail frame. A first clamping seat is fixedly arranged on one side of the sliding rail seat. A cylinder body is installed on the other side of the sliding rail seat. The output end of the cylinder body is provided with a second clamping seat slidable with the sliding rail seat, and both sides of the gear body are respectively engaged with the first clamping seat and the second clamping seat. A guide rail groove matching the sliding rail seat is formed on the guide rail frame, and the guide rail groove is arc-shaped.

[0008] Preferably, the center position of the tooth crest on one side of each gear body close to the detection head and the central axis of the detection head are located at the same horizontal position.

[0009] Preferably, a first sorting groove is formed on the sorting bag, and a second sorting groove is formed inside the sorting bag and on the inner side of the first sorting groove.

[0010] Preferably, the hardness range adjustment assembly includes a limit post fixed to the top of the centrifugal disk. An adjustment ring is rotatably connected to the arc-shaped outer wall of the limit post. A plurality of adjustment guide bars are fixedly arranged on the arc-shaped outer wall of the adjustment ring. A fixed bar is fixedly arranged on each of the plurality of sorting seats, and a guide block is fixedly arranged at the top of each fixed bar, and the guide block is slidably connected to the adjustment guide bar. A threaded extrusion rod is threadedly connected to the top of the centrifugal disk. An arc-shaped scale is fixedly arranged on the centrifugal disk. A pointer is fixedly arranged on the adjustment guide bar close to the arc-shaped scale.

[0011] Preferably, a straight chute matching the guide block is formed on the adjustment guide bar, a threaded seat threadedly connected to the threaded push rod is fixedly arranged at the top end of the centrifugal disc, and a push head is fixedly arranged at one end of the threaded push rod close to the adjustment guide bar.

[0012] Preferably, measurement units are engraved on the arc-shaped scale, and the pointer coincides with the measurement units on the arc-shaped scale.

[0013] Preferably, the limit post includes a smooth rod fixed on the centrifugal disc, the adjustment ring is rotatably connected to the smooth rod, a torsion spring is fixedly connected between the adjustment ring and the smooth rod, a threaded rod is fixedly arranged at the top end of the smooth rod, a threaded limit cylinder is threadedly connected to the outer wall of the threaded rod, and the bottom end of the threaded limit cylinder contacts the top end of the adjustment ring.

[0014] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) With the cooperation of the centrifugal detection component in the present invention, when multiple gear bodies move to the positions corresponding to the detection heads, under the elastic force of the spring and the resilience of the gear bodies and the detection heads, the gear bodies can slide a certain distance. Gear bodies with different hardnesses have different rebound distances. According to different rebound movement distances, gear bodies with different hardnesses are sorted and centrally collected into the first sorting groove and the second sorting groove. The centrifugal detection component can efficiently process a large number of gears. Through rotation and separation, gears with different hardnesses can be quickly distinguished, avoiding the inefficient process of detecting each gear one by one in the traditional detection method, significantly improving the detection speed. The hardness detection device and the centrifugal detection component can achieve automated operation, reducing manual intervention, not only improving the detection efficiency, but also reducing human errors and ensuring the accuracy of the detection results; (2) By rotating the adjustment ring and with the mutual cooperation of the hardness range adjustment component in the present invention, multiple sorting seats can slide on multiple guide rails respectively, and the hardness sorting range can be precisely adjusted according to the position of the arc-shaped scale pointed by the pointer. After the hardness detection device is combined with the hardness range adjustment component, it can meet the requirements of different materials and different application scenarios. Different materials have different hardness characteristics, while traditional hardness detection devices often only provide a fixed hardness test range. By adjusting the hardness range, the device can flexibly adapt to the hardness test requirements of various materials without the need to replace the device or adjust the test parameters, thereby improving the utilization rate and adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic cross-sectional view of the side of the hardness detection device body of the present invention; Figure 3 of the present inventionFigure 2 Partial enlarged view of A; Figure 4 Schematic structural diagram of the centrifugal detection component of the present invention; Figure 5 Schematic structural diagram of the centrifugal detection component and the hardness range adjustment component of the present invention; Figure 6 Schematic structural diagram of the blanking chute of the present invention; Figure 7 Schematic structural diagram of the sorting bag of the present invention; Figure 8 Schematic structural diagram of the clamping mechanism of the present invention; Figure 9 For the present invention Figure 8 Partial enlarged view of B; Figure 10 For the present invention Figure 9 Partial enlarged view of C; Figure 11 Schematic structural diagram of the hardness range adjustment component of the present invention.

[0016] In the figure: 1, hardness detection equipment body; 11, gear body; 2, centrifugal detection component; 21, centrifugal disk; 211, motor body; 22, guide rail frame; 23, clamping mechanism; 231, slide rail seat; 232, first clamping seat; 233, cylinder body; 234, second clamping seat; 24, rebound plate; 25, rebound rod; 251, detection head; 252, spring fixing plate; 253, spring body; 26, sorting seat; 27, sorting bag; 271, first sorting groove; 272, second sorting groove; 28, blanking chute; 3, hardness range adjustment component; 31, adjustment ring; 32, adjustment guide bar; 33, fixed bar; 34, guide block; 35, pointer; 36, arc scale; 37, limit post; 38, threaded limit cylinder; 39, threaded push rod. Detailed implementation manners

[0017] To make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the described embodiments of the present disclosure fall within the scope of protection of the present disclosure.

[0018] Unless otherwise defined, the technical terms or scientific terms used in this disclosure shall have the ordinary meanings as understood by those of ordinary skill in the art to which this disclosure pertains. The words such as "including" or "comprising" used in this disclosure mean that the elements or items appearing before this word cover the elements or items listed after this word and their equivalents, without excluding other elements or items. The words such as "connected" or "coupled" are not limited to physical or mechanical connections, and may also include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", and "right" are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0019] As Figures 1 to 11 shown, a hardness detection device for machining transmission mechanical parts provided by the present invention includes a hardness detection equipment body 1 and a plurality of gear bodies 11. An centrifugal detection assembly 2 is arranged on the hardness detection equipment body 1; The centrifugal detection assembly 2 includes a centrifugal disk 21 rotatably connected to the hardness detection equipment body 1. A hardness range adjustment assembly 3 is arranged on the centrifugal disk 21. A motor body 211 is installed inside the hardness detection equipment body 1. The output end of the motor body 211 is connected to the centrifugal disk 21 through a rotating shaft. A plurality of guide rail frames 22 are fixedly arranged on the centrifugal disk 21. A clamping mechanism 23 is arranged on each guide rail frame 22. The plurality of gear bodies 11 are respectively arranged on the plurality of clamping mechanisms 23. A resilient plate 24 is fixedly arranged on each guide rail frame 22. A resilient rod 25 is slidably connected to the resilient plate 24, and the resilient rod 25 penetrates from one side of the resilient plate 24 to the other side. A detection head 251 is fixedly arranged at one end of the resilient rod 25. A spring body 253 is fixedly arranged at the other end of the resilient rod 25. A spring fixing plate 252 is sleeved on the outer wall of the resilient rod 25, and both ends of the spring fixing plate 252 are fixedly connected to the spring body 253 and the resilient plate 24 respectively. A sorting seat 26 is slidably arranged on the inner wall of each guide rail frame 22. A sorting bag 27 is fixedly arranged on the hardness detection equipment body 1, and the sorting bag 27 is located below the centrifugal disk 21. A plurality of blanking grooves 28 are formed on the centrifugal disk 21. The tops of the plurality of blanking grooves 28 are respectively communicated with the interiors of the plurality of guide rail frames 22, and the bottoms of the plurality of blanking grooves 28 are respectively communicated with the interior of the sorting bag 27; A rotating groove matching the centrifugal disk 21 is formed on the hardness detection equipment body 1. The plurality of guide rail frames 22 are distributed in a circular array on the centrifugal disk 21; Each clamping mechanism 23 includes a slide rail seat 231 slidably disposed on the guide rail frame 22. A first clamping seat 232 is fixedly provided on one side of the slide rail seat 231. A cylinder body 233 is installed on the other side of the slide rail seat 231. A second clamping seat 234 slidably connected to the slide rail seat 231 is provided at the output end of the cylinder body 233. The two sides of the gear body 11 are respectively engaged with the first clamping seat 232 and the second clamping seat 234. A guide rail groove matching the slide rail seat 231 is formed on the guide rail frame 22, and the guide rail groove is arc-shaped; The center position of the tooth crest on one side of each gear body 11 close to the detection head 251 and the central axis of the detection head 251 are located at the same horizontal position; A first sorting groove 271 is formed on the sorting bag 27, and a second sorting groove 272 is formed inside the first sorting groove 271 on the sorting bag 27; When performing batch hardness detection on the gear bodies 11, multiple gear bodies 11 can be respectively placed between multiple groups of first clamping seats 232 and second clamping seats 234. Then, by starting the cylinder body 233, the second clamping seat 234 is made to push the gear body 11, and one side of the gear body 11 is made to be in close contact with the first clamping seat 232, so as to clamp multiple gear bodies 11. At this time, the motor body 211 is started. Under the connection of the rotating shaft, the centrifugal disc 21 can be made to rotate around the connection position with the hardness detection equipment body 1, and the centrifugal disc 21 rotates 120 degrees by itself. During the rotation of the centrifugal disc 21, multiple slide rail seats 231 are in a relatively static state on multiple guide rail frames 22. The rotation of the centrifugal disc 21 can make the inner wall of one side of the guide rail frame 22 contact the outer wall of the slide rail seat 231 and drive the clamping mechanism 23 to move. When the centrifugal disc 21 stops rotating, the gear body 11 on the centrifugal disc 21 can slide towards the detection head 251 under the action of inertia. When the gear body 11 contacts the detection head 251, the return spring rod 25 can be made to slide on the return spring plate 24 and stretch the spring body 253. At this time, under the elastic force of the spring body 253, the detection head 251 impacts the gear body 11, making the gear body 11 obtain a certain resilience. Since the rebound distances of gear bodies 11 with different hardnesses are different after impact, and the higher the hardness of the gear body 11, the longer the rebound distance. The gear bodies 11 meeting the hardness standard move to one side of the sorting seat 26, and on the contrary, the gear bodies 11 not meeting the hardness standard move to the other side of the sorting seat 26. After sorting, the gear bodies 11 can be loosened from the gear bodies 11 by starting the cylinder body 233, and the gear bodies 11 with different hardness specifications respectively fall into the first sorting groove 271 and the second sorting groove 272, thus playing the role of efficiently sorting gear bodies 11 with different hardness specifications.

[0020] The hardness range adjustment assembly 3 includes a limit post 37 fixed to the top of the centrifugal disk 21. An adjustment ring 31 is rotatably connected to the outer arc wall of the limit post 37. A plurality of adjustment guide bars 32 are fixedly arranged on the outer arc wall of the adjustment ring 31. Fixed bars 33 are respectively fixedly arranged on a plurality of sorting seats 26, and a guide block 34 is fixedly arranged at the top of each fixed bar 33, and the guide block 34 is slidably connected to the adjustment guide bar 32. A threaded push rod 39 is threadedly connected to the top of the centrifugal disk 21. An arc-shaped scale 36 is fixedly arranged on the centrifugal disk 21. A pointer 35 is fixedly arranged on the adjustment guide bar 32 on one side close to the arc-shaped scale 36; A straight chute matching the guide block 34 is opened on the adjustment guide bar 32. A threaded seat threadedly connected to the threaded push rod 39 is fixedly arranged on the top of the centrifugal disk 21. A push head is fixedly arranged at one end of the threaded push rod 39 close to the adjustment guide bar 32; Measurement units are engraved on the arc-shaped scale 36, and the pointer 35 coincides with the measurement units on the arc-shaped scale 36; The limit post 37 includes a smooth rod fixed to the centrifugal disk 21. The adjustment ring 31 is rotatably connected to the smooth rod. A torsion spring is fixedly connected between the adjustment ring 31 and the smooth rod. A threaded rod is fixedly arranged at the top of the smooth rod, and a threaded limit cylinder 38 is threadedly connected to the outer wall of the threaded rod, and the bottom end of the threaded limit cylinder 38 contacts the top end of the adjustment ring 31; When adjusting the hardness range, the threaded limit cylinder 38 can be rotated. At this time, under the threaded connection between the threaded limit cylinder 38 and the limit post 37, the bottom end of the threaded limit cylinder 38 is separated from the top end of the adjustment ring 31. At this time, by rotating the threaded push rod 39 and under the threaded connection between the threaded push rod 39 and the centrifugal disk 21, the threaded push rod 39 can be made to push the adjustment guide bar 32 to rotate, and at the same time compress the torsion spring fixed between the adjustment ring 31 and the limit post 37. Since the guide rail frame 22 slidably connected to the sorting seat 26 is relatively stationary with respect to the adjustment guide bar 32 at this time, the rotation of the adjustment guide bar 32 can push the guide block 34 to slide inside the adjustment guide bar 32 and drive the sorting seat 26 to slide inside the guide rail frame 22, so as to achieve the effect of adjusting the hardness range to be detected. At this time, by rotating the threaded limit cylinder 38 and making the bottom end of the threaded limit cylinder 38 closely adhere to the top end of the adjustment ring 31, the adjustment ring 31 can be limited.

[0021] Working principle and usage process of the present invention: When batch hardness detection of the gear body 11 is required, multiple gear bodies 11 can be respectively placed between multiple groups of first clamping seats 232 and second clamping seats 234. Then, by starting the cylinder body 233, the second clamping seat 234 can push the gear body 11, and make one side of the gear body 11 closely adhere to the first clamping seat 232, so as to clamp multiple gear bodies 11. At this time, start the motor body 211. Under the connection of the rotating shaft, the centrifugal disc 21 can rotate around the connection position with the hardness detection equipment body 1, and the centrifugal disc 21 rotates 120 degrees by itself. During the rotation of the centrifugal disc 21, multiple slide rail seats 231 are in a relatively static state on multiple guide rail frames 22. The rotation of the centrifugal disc 21 can make one side of the inner wall of the guide rail frame 22 contact the outer wall of the slide rail seat 231 and drive the clamping mechanism 23 to move. When the centrifugal disc 21 stops rotating, the gear body 11 on the centrifugal disc 21 can slide towards the detection head 251 under the action of inertia. When the gear body 11 contacts the detection head 251, it can push the rebound rod 25 to slide on the rebound plate 24 and stretch the spring body 253. At this time, under the elastic force of the spring body 253, the detection head 251 impacts the gear body 11, so that the gear body 11 obtains a certain resilience. Since the rebound distances of gear bodies 11 with different hardnesses are different after impact, and the higher the hardness of the gear body 11, the longer the rebound distance. The gear bodies 11 that meet the hardness standard move to one side of the sorting seat 26, and on the contrary, the gear bodies 11 that do not meet the hardness standard move to the other side of the sorting seat 26. The sorted gear bodies 11 can loosen the gear bodies 11 by starting the cylinder body 233, and the gear bodies 11 with different hardness specifications respectively fall into the first sorting groove 271 and the second sorting groove 272. When adjusting the hardness range, the threaded limit cylinder 38 can be rotated. At this time, under the threaded connection of the threaded limit cylinder 38 and the limit post 37, the bottom end of the threaded limit cylinder 38 is separated from the top end of the adjusting ring 31. At this time, by rotating the threaded push rod 39, and under the threaded connection between the threaded push rod 39 and the centrifugal disc 21, the threaded push rod 39 can push the adjusting guide bar 32 to rotate, and at the same time compress the torsion spring fixed between the adjusting ring 31 and the limit post 37. Since the guide rail frame 22 slidably connected to the sorting seat 26 is relatively stationary with respect to the adjusting guide bar 32 at this time, the rotation of the adjusting guide bar 32 can push the guide block 34 to slide inside the adjusting guide bar 32 and drive the sorting seat 26 to slide inside the guide rail frame 22. At this time, by rotating the threaded limit cylinder 38 and making the bottom end of the threaded limit cylinder 38 closely adhere to the top end of the adjusting ring 31, the adjusting ring 31 can be limited.

[0022] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be regarded as falling within the protection scope of the present invention.

Claims

1. A hardness detection device for machining transmission mechanical parts, comprising a hardness detection device body (1) and a plurality of gear bodies (11), characterized in that: A centrifugal detection component (2) is provided on the hardness detection device body (1); The centrifugal detection component (2) includes a centrifugal disc (21) rotatably connected to the hardness detection device body (1). A hardness range adjustment component (3) is provided on the centrifugal disc (21). A motor body (211) is installed inside the hardness detection device body (1). The output end of the motor body (211) is connected to the centrifugal disc (21) through a rotating shaft. A plurality of guide rail frames (22) are fixedly provided on the centrifugal disc (21). A clamping mechanism (23) is provided on each guide rail frame (22). A plurality of gear bodies (11) are respectively arranged on the plurality of clamping mechanisms (23). A rebound plate (24) is fixedly provided on each guide rail frame (22). A rebound rod (25) is slidably connected to the rebound plate (24), and the rebound rod (25) penetrates from one side of the rebound plate (24) to the other side. A detection head (251) is fixedly provided at one end of the rebound rod (25). A spring body (253) is fixedly provided at the other end of the rebound rod (25). A spring fixing plate (252) is sleeved on the outer wall of the rebound rod (25), and both ends of the spring fixing plate (252) are fixedly connected to the spring body (253) and the rebound plate (24) respectively. A sorting seat (26) is slidably provided on the inner wall of each guide rail frame (22). A sorting bag (27) is fixedly provided on the hardness detection device body (1), and the sorting bag (27) is located below the centrifugal disc (21). A plurality of blanking grooves (28) are formed on the centrifugal disc (21). The tops of the plurality of blanking grooves (28) are respectively communicated with the interiors of the plurality of guide rail frames (22), and the bottoms of the plurality of blanking grooves (28) are respectively communicated with the interior of the sorting bag (27).

2. A hardness detection device for processing transmission mechanical parts according to claim 1, characterized in that: A rotating groove matching the centrifugal disc (21) is formed on the hardness detection device body (1). The plurality of guide rail frames (22) are distributed in a circular array on the centrifugal disc (21).

3. A hardness detection device for machining transmission mechanical parts according to claim 1, characterized in that: Each clamping mechanism (23) includes a slide rail seat (231) slidable on the guide rail frame (22). A first clamping seat (232) is fixedly provided on one side of the slide rail seat (231). A cylinder body (233) is installed on the other side of the slide rail seat (231). The output end of the cylinder body (233) is provided with a second clamping seat (234) slidably connected to the slide rail seat (231). The two sides of the gear body (11) are respectively engaged with the first clamping seat (232) and the second clamping seat (234). A guide rail groove matching the slide rail seat (231) is formed on the guide rail frame (22), and the guide rail groove is arc-shaped.

4. A hardness testing device for machining transmission mechanical parts according to claim 1, characterized in that: The center position of the tooth crest on one side of each gear body (11) close to the detection head (251) and the central axis of the detection head (251) are located at the same horizontal position.

5. A hardness detection device for machining transmission mechanical parts according to claim 1, characterized in that: A first sorting groove (271) is formed on the sorting bag (27). A second sorting groove (272) is formed on the sorting bag (27) inside the first sorting groove (271).

6. The hardness detection device for machining transmission mechanical parts according to claim 1, characterized in that: The hardness range adjusting assembly (3) includes a limit post (37) fixed to the top end of the centrifugal disc (21). An adjusting ring (31) is rotatably connected to the outer arc wall of the limit post (37). A plurality of adjusting guide bars (32) are fixedly arranged on the outer arc wall of the adjusting ring (31). Fixed bars (33) are respectively fixedly arranged on the plurality of sorting seats (26). A guide block (34) is fixedly arranged at the top end of each fixed bar (33). The guide block (34) is slidably connected with the adjusting guide bar (32). A threaded push rod (39) is threadedly connected to the top end of the centrifugal disc (21). An arc-shaped scale (36) is fixedly arranged on the centrifugal disc (21). A pointer (35) is fixedly arranged on the adjusting guide bar (32) close to the arc-shaped scale (36).

7. A hardness detection device for machining transmission mechanical parts according to claim 6, characterized in that: A straight sliding groove matching the guide block (34) is formed in the adjusting guide bar (32). A threaded seat threadedly connected with the threaded push rod (39) is fixedly arranged at the top end of the centrifugal disc (21). A push head is fixedly arranged at one end of the threaded push rod (39) close to the adjusting guide bar (32).

8. A hardness detection device for machining transmission mechanical parts according to claim 6, characterized in that: Measurement units are inscribed on the arc-shaped scale (36). The pointer (35) coincides with the measurement units on the arc-shaped scale (36).

9. The hardness detection device for processing transmission mechanical parts according to claim 6, characterized in that: The limit post (37) includes a smooth rod fixed to the centrifugal disc (21). The adjusting ring (31) is rotatably connected with the smooth rod. A torsion spring is fixedly connected between the adjusting ring (31) and the smooth rod. A threaded rod is fixedly arranged at the top end of the smooth rod. A threaded limit cylinder (38) is threadedly connected to the outer wall of the threaded rod. The bottom end of the threaded limit cylinder (38) contacts the top end of the adjusting ring (31).

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