Rotating disc type needle shaft grooving machine

Abstract

The utility model provides a rotating disc type needle shaft grooving machine. Comprising a vertical rotating disc and a grooving cutter, wherein bearing grooves and an arc rolling surface are distributed on the circumferential surface of the rotating disc at equal intervals; the grooving cutter is arranged in front of the rotating disc; a cutting edge of the grooving cutter faces the circumferential surface of the rotating disc; the ejection mechanism is used for ejecting out the needle shafts in the bearing grooves so as to transfer the needle shafts to the arc rolling surface when the bearing grooves are sequentially rotated to the position of the cutting edge inlet end of the slotting tool by the rotating disc; the elastic buffer piece is arranged on the outer side of the circumferential surface of the rotating disc and is close to the inlet end of the cutting edge of the grooving cutter; and the elastic buffer piece is provided with a blocking surface which is closer to the circumferential surface of the rotating disc than the cutting edge. The utility model has the advantage that the cutting edge of the grooving cutter cannot be impacted and broken when the needle shaft is ejected out, and the service life of the grooving cutter can be prolonged.

Description

Technical Field

[0001] This utility model relates to the needle shaft of a micro motor gear, to the processing equipment of the needle shaft, and in particular to a rotary needle shaft grooving machine. Background Technology

[0002] In micro motors, a pin shaft is needed to support the internal micro gears. To ensure the pin shaft is mounted and positioned on the housing and to prevent axial movement, annular grooves are created on the circumferential surfaces at both ends of the pin shaft. Currently, pin shafts used in micro motors include... Figure 1 As shown, depending on the specifications, the diameter of the needle shaft 1 ranges from 1.0 to 3.0 mm, the length ranges from 6.4 to 25.0 mm, the width of the groove 1a typically ranges from 0.05 to 0.5 mm, and the depth typically ranges from 0.01 to 0.2 mm. It is evident that the needle shaft is a tiny, precision part, which makes it quite difficult to machine the annular grooves at both ends of the needle shaft.

[0003] Previously, existing technology used disc milling cutters to machine the grooves at both ends of the needle shaft. For example... Figure 2 As shown, the disc milling cutter has teeth 11 distributed circumferentially along the edge of the disc 10. By rotating the disc 11, annular grooves are machined around the needle shaft using the teeth 11. However, in actual machining, it was found that the disc milling cutter can only machine needle shafts with relatively low hardness. For needle shafts with high hardness, such as stainless steel, the teeth are prone to breakage when machined with the disc milling cutter.

[0004] Therefore, the applicant developed a rotary pin grooving machine, which uses the rolling surface on the rotating disk to press the pin spool to roll on the long cutting edge of a thick blade to create an arc-shaped groove. Because the rolling surface can apply a large compressive force and a thick blade with a long cutting edge is used, even pin spools with high hardness can be processed to create annular grooves. However, in this grooving machine, when the pin spool enters the inlet end of the cutting edge of the blade, it needs to be pushed out of the receiving groove of the rotating disk. The pushed-out pin spool will impact the cutting edge of the blade, and the sudden impact force will cause the cutting edge to break and be damaged. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a rotary pin shaft grooving machine that will not damage the cutting edge of the grooving tool when the pin shaft is ejected, so as to overcome the shortcomings of the existing technology.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A rotary pin grooving machine includes a vertical rotating disk with receiving grooves and arc-shaped rolling surfaces evenly spaced on its circumference, a grooving tool with an arc-shaped cutting edge facing the circumference of the rotating disk, and an ejection mechanism that ejects the pin spools in the receiving grooves to the arc-shaped rolling surfaces when the rotating disk rotates each receiving groove sequentially to the entry end position of the cutting edge of the grooving tool. The machine also includes an elastic buffer member located outside the circumference of the rotating disk and near the entry end position of the cutting edge of the grooving tool, the elastic buffer member having a blocking surface closer to the circumference of the rotating disk than the cutting edge.

[0008] By employing the above technical solution, an elastic buffer is provided on the outer side of the rotating disk near the entry end of the grooving tool's cutting edge, and the blocking surface of this elastic buffer is required to be closer to the rotating disk's circumferential surface than the cutting edge. Therefore, when the ejector mechanism pushes the needle shaft out of the receiving groove, the needle shaft will first impact the blocking surface of the elastic buffer. The elastic buffer first provides elastic resistance to the ejected needle shaft, and then, under the ejection action of the ejector mechanism, the needle shaft will come into contact with the cutting edge of the grooving tool. This reduces the impact of the ejected needle shaft on the cutting edge of the tool, preventing the cutting edge of the grooving tool from being damaged and extending the tool's service life.

[0009] In a specific embodiment of this utility model, the elastic buffer includes a movable baffle facing the circumferential surface of the rotating disk and an elastic support disposed on the back of the movable baffle.

[0010] In a specific embodiment of this utility model, the elastic support includes a support column, a sleeve fixed to the top of the support column, a top rod and a support spring disposed inside the sleeve. One end of the top rod extends out from the open end of the sleeve and is connected to the movable baffle. One end of the support spring abuts against the other end of the top rod, and the other end abuts against the closed end of the sleeve.

[0011] In a specific embodiment of this utility model, the ejection mechanism includes a top plate with elastic telescopic function disposed at the bottom of each of the receiving grooves and a blocking block disposed next to the rotating disk and at a position relative to the inlet end of the arc-shaped cutting edge for abutting the extension of the top plate.

[0012] In a specific embodiment of this utility model, the grooving cutter has two pieces, which are arranged side by side at intervals in front of the circumferential surface of the rotating disk, near the inner side of the left and right edges of the circumferential surface. With this structure, annular grooves can be machined simultaneously at both ends of the needle shaft.

[0013] In a specific embodiment of this utility model, the thickness of the grooving tool is 0.6-1.0 mm, and the length of the arc-shaped cutting edge is 2-4 times the circumference of the needle shaft being processed. Such a tool has high cutting edge strength, and when grooving on a needle shaft with high hardness, the cutting edge is not easily chipped or damaged.

[0014] In a specific embodiment of this utility model, a blocking member is provided on the outer circumferential surface of the rotating disk above the movable baffle to prevent the needle shaft from escaping from the receiving groove. The upper end of the movable baffle is hinged to the lower end of the blocking member. This structure prevents the needle shaft from being thrown out and falling during the rotation of the rotating disk.

[0015] In a specific embodiment of this utility model, the turntable has a cavity that axially penetrates the turntable and communicates with the receiving groove through a through hole located on the inner side of the receiving groove. The top plate is located in the through hole and has a contact block located in the cavity and protruding from the end face of the turntable, which can contact the blocking block.

[0016] In a specific embodiment of this utility model, the blocking block is a round roller. Using a round roller serves both as a blocking block to push the top plate out and makes it easier for the top plate to pass over, ensuring smooth rotation of the rotating disk.

[0017] In a specific embodiment of this utility model, a tool adjustment mechanism for adjusting the grooving gap is also included. This tool adjustment mechanism allows for adjustment of the grooving gap, thereby enabling adjustment of the depth and width of the annular groove.

[0018] In summary, this invention has the advantage that the cutting edge of the grooving tool will not be damaged by impact when the needle shaft is ejected, which is beneficial to extending the service life of the grooving tool. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the needle shaft structure;

[0020] Figure 2 This is a schematic diagram of a disc milling cutter.

[0021] Figure 3 This is a schematic diagram of the rotary pin shaft grooving machine of this utility model;

[0022] Figure 4 A schematic diagram of the top plate structure equipped with a return spring;

[0023] Figure 5 This is a partial schematic diagram of the top plate position of this utility model;

[0024] Figure 6 This is a partial schematic diagram of the location at the entrance end of the arc-shaped cutting edge of this utility model;

[0025] Figure 7 This is a schematic diagram of the grooving tool of this utility model. Detailed Implementation

[0026] like Figure 1 As shown, the rotary pin shaft grooving machine of this utility model includes a base 100, a rotating disk 200, a grooving cutter 300, a feed trough 400, an ejection mechanism 500, a cutter adjustment mechanism 600, a blocking component 700, and a buffer mechanism 800.

[0027] The base 100 is equipped with a support frame 101. The rotating disk 200 is vertically mounted on the support frame 101, supported by a rotating shaft 101a. The rotating shaft 101a is driven to rotate by a motor (not shown in the figure), which in turn drives the rotating disk 200 to rotate on the support frame 101. In this invention, the rotating disk 200 is made of a relatively hard material. In this embodiment, the rotating disk 200 is made of bearing steel, which meets the requirements for wear resistance and is also relatively economical.

[0028] A blanking station A and a grooving station B are provided around the circumference of the rotating disk 200. In this embodiment, the blanking station A is located above the circumference of the rotating disk 200, and the grooving station B is located in front of the circumference of the rotating disk 200.

[0029] The rotating disk 200 has axially penetrating receiving grooves 201 evenly spaced along its circumference, with an arc-shaped rolling surface 202 formed between adjacent receiving grooves 201. The width and depth of the receiving grooves 201 can only accommodate one needle shaft. The axial thickness of the rotating disk 200 is slightly less than the length of the needle shaft being processed, by 0.1-0.2 mm.

[0030] A feeding trough 400 is provided at the unloading station A. The trough body of the feeding trough 400 is fixed on the support frame 101 and is located above the rotating disk 200. The main body section 401 of the feeding trough 400 is vertically located above the rotating disk 200, and the discharge port 402 faces and is close to the circumferential surface of the rotating disk 200. The upper end of the feeding trough 400 has an arc-shaped, smoothly transitioned feeding port 403 that communicates with the main body section 401. There is a small gap between the discharge port 402 and the discharge end face 404 of the feeding trough 400 and the circumferential surface of the rotating disk 200. This gap is much smaller than the diameter of the needle shaft. This structure ensures that the rotation of the rotating disk is not affected. In addition, it also ensures that the needle shaft in the feeding trough 400 will not fall into the receiving groove 201 when it has not rotated to below the discharge port. This ensures that as the rotating disk 200 rotates, each receiving groove 201 can receive one needle shaft in sequence.

[0031] The grooving tool 300 is located at grooving station B. Specifically, a tool holder 310 is installed on the base 100 at the position corresponding to grooving station B. The grooving tool 300 is mounted on the tool holder 310.

[0032] Combination Figure 6 and Figure 7 As shown, in this embodiment, the grooving tool 300 consists of two blades, spaced apart and side-by-side, located in front of the circumference of the rotating disk 200 and near the inner side of the left and right edges of the circumference. Both blades are thick inserts made of tungsten carbide alloy, with a thickness ranging from 0.6 to 1.0 mm, preferably 0.7 mm in this embodiment. The front end of the grooving tool 300 has a continuous, uninterrupted arc-shaped cutting edge 301 along its width. The cross-sectional shape of the arc-shaped cutting edge 301 is an isosceles trapezoid. The length of the cutting edge must ensure that the needle shaft can roll at least one revolution on the cutting edge. Therefore, the cutting edge length is typically 2-4 times the circumference of the needle shaft being processed. For example, when processing a needle shaft with a diameter of 1.0-1.5 mm, the cutting edge length can be 14 mm. This grooving tool 300 has high strength and the cutting edge is not easily damaged even under high pressure, enabling grooving on materials with high hardness. By using two grooving tools spaced side-by-side, annular grooves can be processed simultaneously at both ends of the needle shaft in one operation. The arc-shaped cutting edge 301 faces the circumferential surface of the rotating disk 200 and forms a slotted gap 302 between the circumferential surface and the disk.

[0033] Similarly, in order to ensure that the arc-shaped rolling surface 202 can always press the needle shaft to roll on the arc-shaped cutting edge of the grooving tool 300 during the grooving process, the arc length of the arc-shaped rolling surface 202 should not be less than the length of the arc-shaped cutting edge 301, and should be slightly longer than the length of the arc-shaped cutting edge 301, preferably 1 / 7 to 1 / 6 longer than the length of the arc-shaped cutting edge 301.

[0034] As shown in the figure Figures 4 to 6 As shown, the ejection mechanism 500 includes a top plate 510 with elastic telescopic function located at the bottom of each receiving groove 201 and a blocking block 520 located next to the rotating disk 200 corresponding to the entrance end of the arc-shaped cutting edge 301 for abutting the extension of the top plate 501.

[0035] Specifically, the top plate 510 is integrally formed by three parts: a protruding plate 511, an intermediate plate 512, and a contact block 513. The protruding plate 511 and the intermediate plate 512 are of equal thickness. The contact block 513 protrudes from the intermediate plate 512 on both the front and rear sides to form steps 514 on both the front and rear sides of the root of the intermediate plate. The intermediate plate 512 and the contact block 513 are of equal width and both protrude from the protruding plate 511 from the left and right sides (consistent with the axis of the rotating disk) to form shoulders 515 on the left and right sides of the upper end of the intermediate plate 512.

[0036] Additionally, the rotating disk 200 has cavities 230 axially penetrating the rotating disk 200 located inside each receiving groove 201. A through hole 231, which connects the receiving groove 201 and the cavity 230 and is adapted to the shape of the protruding plate 511, is provided between them. Furthermore, the cavity 230 is divided into a narrow cavity portion 232 near the receiving groove 201 and a wide cavity portion 233 away from the receiving groove 201. The protruding plate 511 of the top plate 510 is located in the through hole 231, and the intermediate plate 512 and contact block 513 are located within the cavity 230, with both ends protruding from the left and right end faces of the rotating disk 200. The contact block 513 is located in the wide cavity portion 233, and the upper part of the intermediate plate 512 is located within the narrow cavity portion 232, creating an ejection stroke between the shoulder 515 and the top surface of the narrow cavity portion 232. A spring hole 516 is also provided in the middle of the intermediate plate 512. The top plate 510 also includes a return spring 517 placed in the spring hole 516. The two sides of the return spring 517 protrude from the middle plate 512, such that the upper end of the return spring 517 abuts against the top surface of the wide cavity 233, and the lower end abuts against the step 514, thus giving the top plate 510 an elastic function. Under the action of the return spring 517, in the initial state, the top surface of the protruding plate 511 of the top plate 510 retracts to the bottom of the receiving groove 501.

[0037] There are two blocking blocks 520, symmetrically arranged on the left and right end faces of the rotating disk 200, opposite to the entry end of the arc-shaped cutting edge 301, and located on the travel trajectory of the contact portion 513a at the bottom of the contact block 513. In this embodiment, the blocking block 520 is a circular roller. Specifically, roller brackets 521 are provided on the left and right sides of the rotating disk 200 on the base 100, and the circular rollers are mounted on the roller brackets 521 through support shafts. In this invention, the blocking block 520 uses a circular roller. On one hand, the circumferential surface of the roller has an arc that changes from low to high and then from high to low. This allows the roller to contact the contact blocks 513 in each receiving groove 201, gradually pressing the top plate upwards and pushing out the needle shaft located in the receiving groove 201. After passing the highest point, the top plate gradually retracts under the action of the return spring 517, thus realizing the extension and retraction function of the top plate. On the other hand, the roller also rotates during the pressing of the top plate, allowing the contact blocks 513 of the top plate to smoothly pass through the blocking member, ensuring the smooth rotation of the rotating disk 200. To make the contact blocks 513 pass over the roller more smoothly, the corners where the contact blocks 513 first contact the roller are chamfered.

[0038] The tool adjustment mechanism 600 consists of a slide rail 601, a slide block 602, a locking post 603, a locking bolt 604, and a locking nut 605. The slide rail 601 is located below the tool holder 310 and fixed to the base 100. The extension direction of the slide rail 601 is consistent with the extension direction of the grooving tool 300. The slide block 602 is fixed below the tool holder 310 and slidably mounted on the slide rail 601, allowing the grooving tool 300 on the tool holder 310 to slide back and forth. The locking post 603 is fixed to the base 100 and located in front of the slide rail 601. The upper end of the locking post 603 has a through hole. The locking bolt 604 is located in this through hole, and its rear end is fixedly connected to the tool holder 310. There are two locking nuts 605, one sleeved on the locking bolt 604, used to clamp and fix the locking bolt 604 to the locking post 603 from the front and rear of the through hole. When the position of the grooving tool 300 needs to be adjusted, loosen the two locking nuts 605 and manually drive the slide block 602 to slide on the slide rail 601, thereby adjusting the gap between the tool cutting edge and the circumferential surface of the rotating disk 200, i.e., adjusting the grooving gap. After the position of the grooving tool 300 is adjusted, tighten the two locking nuts to clamp and fix the locking bolt 604 on the locking column 603, thereby ensuring that the width of the grooving gap does not change during the grooving process.

[0039] To prevent the needle shaft in the receiving groove 201 from being thrown out during the rotation of the rotating disk 200, a blocking member 700 is provided on the outer side of the circumferential surface of the rotating disk 200 along the rotation direction, located between the feeding station A and the grooving station B. This blocking member 700 has a blocking arc surface 701 that faces and approaches the circumferential surface of the rotating disk 200 and extends circumferentially. The gap between the blocking arc surface 701 and the circumferential surface of the rotating disk 200 should be small enough to prevent the needle shaft from escaping, but should not obstruct the rotation of the rotating disk 200.

[0040] As the rotating disk 200 rotates, when the receiving groove 201 rotates to the inlet end position of the grooving tool 300, the ejection mechanism 500 will eject the needle shaft. However, the suddenly ejected needle shaft will impact the arc-shaped cutting edge of the grooving tool, which may damage the cutting edge. To avoid this situation, a buffer mechanism 800 is also provided at the grooving station B.

[0041] The buffer mechanism 800 has an elastic buffer member 810 located on the circumferential surface facing the rotating disk 200 near the inlet end of the circular arc cutting edge. The elastic buffer member 810 comprises a movable baffle 811 and an elastic support 820 supported on the back of the movable baffle 811. The elastic support 820 includes a support column 821 fixed to the tool holder 310, a rod sleeve 822 fixed to the top of the support column 821, and a push rod 823 and a supporting spring (not shown) disposed within the rod sleeve 822. One end of the rod sleeve 822 is closed, and the other end is open, facing the circumferential surface of the rotating disk 200. The push rod 823 is located within the rod sleeve 822 and extends from the open end of the rod sleeve 822, connecting to the movable baffle 811. One end of the supporting spring within the rod sleeve 822 abuts against the closed end of the rod sleeve, and the other end abuts against the push rod 823. The upper end of the movable baffle 811 is hinged to the lower end of the blocking member 700 (i.e., the end near the grooving tool 300). The movable baffle 811 also has an arc-shaped stop surface 811a facing and approaching the circumferential surface of the rotating disk 200. The lower end of the arc-shaped stop surface 811a is close to the entrance end of the arc-shaped cutting edge and is pressed against the circumferential surface of the rotating disk 200 under the action of the elastic support 820. That is, under the action of the supporting spring, the lower end of the arc-shaped stop surface 811 is closer to the circumferential surface of the rotating disk 200 than the arc-shaped cutting edge 301 of the grooving tool 300. In this way, when the ejector mechanism 500 ejects the needle shaft from the receiving groove 201, the needle shaft will first impact the movable baffle 811. Under the action of the elastic support 820, the movable baffle 811 first provides an elastic resistance to the ejected needle shaft. Then, under the ejection action of the ejector mechanism 500, the needle shaft will come into contact with the arc-shaped cutting edge of the grooving tool 300. This reduces the impact of the ejected needle shaft on the cutting edge of the grooving tool 300, and can prevent the cutting edge of the grooving tool from being damaged, thereby extending the service life of the tool.

[0042] In this invention, the axial length of the rotating disk 200 is slightly shorter than the length of the needle shaft being processed, by 0.1-0.2 mm. By axially aligning the feed groove 400 and the rotating disk 200, the needle shaft enters the receiving groove 201 while still on the arc-shaped rolling surface, with both ends of the needle shaft symmetrically protruding 0.05-0.1 mm from the end face of the rotating disk 200. This ensures that when the needle shaft is rolled by force applied to the arc-shaped rolling surface, the force distributed on the needle shaft and the cutting edges on both sides is balanced, thereby ensuring that the width and depth of the annular grooves processed at both ends of the needle shaft are consistent, thus guaranteeing processing accuracy.

[0043] The base 100 also has a discharge port 102 located below the grooving tool 300. After the needle shaft that has finished processing the annular groove separates from the grooving tool 300 and the rotating disk 200, it falls downward and finally falls into the collection box (not shown in the figure) placed below the discharge port 102.

[0044] The above describes the rotary pin shaft grooving machine of this utility model, and its grooving operation method is as follows:

[0045] 1. Connect the outlet of the vibratory feeder to the inlet of the feed trough 400, and use the vibration of the vibratory feeder to feed the needle shafts into the feed trough 400 in sequence;

[0046] 2. The rotating disk 200 is driven by a motor to rotate. During the rotation of the rotating disk 200, the needle shafts located in the feed trough 400 fall into each receiving trough 201 in sequence.

[0047] 3. When one of the receiving grooves 201 drives a needle shaft to rotate to the entrance end of the arc-shaped cutting edge 301 of the grooving tool 300, the top plate in the ejection mechanism 500 slides on the surface of the round roller that serves as the blocking block 520 through the contact part at the inner end. The top plate gradually rises and ejects the needle shaft in the receiving groove 300 outward. During the ejection process, the needle shaft is first blocked by the buffer mechanism 700 and then gradually contacts the entrance end of the arc-shaped cutting edge.

[0048] 4. As the rotating disk 200 continues to rotate, the ejected needle shaft is transferred to the arc-shaped rolling surface 202 behind the receiving groove 201 and driven into the grooving gap. During the rotation of the rotating disk 200, the arc-shaped rolling surface presses and rubs against the needle shaft, causing it to roll forward on the arc-shaped cutting edge 301 until it reaches the exit end of the arc-shaped cutting edge. Finally, it falls out and disengages from the grooving tool 300 and the rotating disk 200. This completes the process of chiseling an annular groove into the needle shaft. During this process, after the needle shaft enters the grooving gap, the contact portion 513 of the top plate in the ejection mechanism 500 passes the highest point of the circular roller as the rotating disk 200 rotates and gradually retracts under the action of the return spring. Once it has completely passed the circular roller, the top surface of the protruding plate of the top plate retracts back to the bottom of the receiving groove 201.

[0049] As can be seen from the above description, this utility model uses the rotation of the rotating disk to transfer the needle shaft onto the arc rolling surface. The arc rolling surface can apply a large compressive force to the needle shaft, and the use of a relatively thick blade with a continuous arc cutting edge allows the cutting edge to withstand this large compressive force without breaking. Therefore, it is possible to process annular grooves on needle shafts with high hardness, such as stainless steel. Furthermore, it has the advantage that the cutting edge of the grooving tool will not be damaged by impact when the needle shaft is ejected, which helps to extend the service life of the grooving tool.

Claims

1. A rotary pin shaft grooving machine, characterized in that, The device includes a vertical rotating disk with receiving grooves and arc-shaped rolling surfaces evenly spaced on its circumferential surface; a grooving tool with an arc-shaped cutting edge facing the circumferential surface of the rotating disk; and an ejection mechanism that ejects the needle shaft in the receiving groove to the arc-shaped rolling surface when the rotating disk rotates each receiving groove sequentially to the entry end position of the cutting edge of the grooving tool. It also includes an elastic buffer member located on the outer side of the circumferential surface of the rotating disk and close to the entry end position of the cutting edge of the grooving tool. The elastic buffer member has a blocking surface that is closer to the circumferential surface of the rotating disk than the cutting edge.

2. The rotary pin shaft grooving machine according to claim 1, characterized in that: The elastic buffer includes a movable baffle facing the circumferential surface of the rotating disk and an elastic support disposed on the back of the movable baffle.

3. The rotary pin shaft grooving machine according to claim 2, characterized in that: The elastic support includes a support column, a sleeve fixed to the top of the support column, a top rod and a support spring disposed inside the sleeve. One end of the top rod extends from the open end of the sleeve and is connected to the movable baffle. One end of the support spring abuts against the other end of the top rod, and the other end abuts against the closed end of the sleeve.

4. The rotary pin shaft grooving machine according to claim 3, characterized in that: The ejection mechanism includes a top plate with elastic telescopic function located at the bottom of each of the receiving slots and a blocking block located next to the rotating disk and at a position relative to the inlet end of the arc-shaped cutting edge for abutting the protrusion of the top plate.

5. The rotary pin shaft grooving machine according to claim 1, characterized in that: The grooving cutter has two blades, which are positioned side by side at intervals in front of the circumferential surface of the rotating disk, near the inner side of the left and right edges of the circumferential surface.

6. The rotary pin shaft grooving machine according to claim 1 or 5, characterized in that: The grooving tool has a thickness of 0.6-1.0 mm, and the length of the arc-shaped cutting edge is 2-4 times the circumference of the needle shaft being processed.

7. The rotary pin shaft grooving machine according to claim 2, characterized in that: The outer circumferential surface of the rotating disk, located above the movable baffle, is also provided with a blocking component to prevent the needle shaft in the receiving groove from escaping. The upper end of the movable baffle is hinged to the lower end of the blocking component.

8. The rotary pin shaft grooving machine according to claim 4, characterized in that: The turntable has a cavity that axially penetrates the turntable and communicates with the receiving groove through a through hole located inside the receiving groove. The top plate is located in the through hole and has a contact block located in the cavity and protruding from the end face of the turntable, which can contact the blocking block.

9. The rotary pin shaft grooving machine according to claim 4 or 8, characterized in that: The blocking block is a round roller.

10. The rotary pin shaft grooving machine according to claim 1, characterized in that: It also includes a tool adjustment mechanism for adjusting the grooving gap.

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