Machining head and shaft machining equipment

Abstract

The utility model discloses a machining head and shaft piece machining equipment, the machining head comprises a base, a radial adjusting seat, at least three sets of machining pieces and locking pieces, the radial adjusting seat is connected with the base in a rotating mode, the radial adjusting seat is provided with a first receding hole and a plurality of radial adjusting holes, the multiple radial adjusting holes sequentially extend in the circumferential direction of the first receding hole, and the distance between the radial adjusting holes and the first receding hole is enlarged from one end of each radial adjusting hole to the other end of the radial adjusting hole. The machining pieces penetrate through the radial adjusting holes one by one and are arranged on the base in a sliding mode in the radial direction of the base, and machining spaces corresponding to the first receding holes are formed between the machining pieces; and the locking piece is connected with the base and the radial adjusting seat. In the application process, when the radial adjusting base rotates relative to the base, the radial adjusting base drives all the machined parts to synchronously slide in the radial direction of the base through the radial adjusting holes so as to adjust the size of the machining space, and therefore the shaft parts with different diameters can be matched.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft processing, in particular to a processing head and shaft processing equipment. Background Art

[0002] The processing of the outer cylindrical knurling or thread rolling of the shaft is usually carried out by rolling multiple rolling wheels on the circumference of the shaft, thereby pressing out the required patterns on the circumference of the shaft.

[0003] In related technologies, shaft processing equipment often needs to process shafts of different diameters. However, existing processing heads can often only roll shafts of one diameter. Therefore, workers need to frequently replace the processing heads of the processing equipment to adapt to shafts of different diameters. Therefore, the work intensity of the workers is relatively high. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention proposes a processing head and a shaft processing device, which can be adapted to process shafts of various diameters.

[0005] In a first aspect, an embodiment of the present application provides a processing head, comprising:

[0006] base;

[0007] a radial adjustment seat, rotatably connected to the base, the radial adjustment seat being provided with a first clearance hole and a plurality of radial adjustment holes, wherein the first clearance hole is extended along the rotation center axis of the radial adjustment seat, the plurality of radial adjustment holes are sequentially extended in a circumferential direction around the first clearance hole, and the distance between the radial adjustment holes and the first clearance holes is increased from one end to the other end of the radial adjustment hole;

[0008] At least three groups of processing parts are provided, the number of which is equal to the radial adjustment holes, the processing parts are respectively inserted into the radial adjustment holes and slidably arranged on the base along the radial direction of the base, and processing spaces corresponding to the first clearance holes are formed between the processing parts;

[0009] a locking member connected to the base and the radial adjustment seat, and used to relatively fix the base and the radial adjustment seat;

[0010] When the radial adjustment seat rotates relative to the base, the radial adjustment seat drives each of the processing parts to slide synchronously along the radial direction of the base through the radial adjustment hole, so as to adjust the size of the processing space.

[0011] According to some embodiments of the present invention, one of the base and the radial adjustment seat is provided with an annular protrusion, and the other is provided with an annular groove, the annular protrusion is rotatably embedded in the annular groove, and the locking piece is threadedly connected to the side of the annular groove for abutting against the annular protrusion.

[0012] According to some embodiments of the present invention, the annular protrusion is provided with an annular groove on the outer peripheral surface, and the inner end portion of the locking member is used to be inserted into the annular groove.

[0013] According to some embodiments of the present invention, the cross section of the annular groove is V-shaped, or the opening of the annular groove is set at a chamfered right angle;

[0014] The inner end portion of the locking member is configured in a frustum or cone shape to fit into the annular groove.

[0015] According to some embodiments of the present invention, the end of the base is provided with a guide groove along its radial direction, and the end of the workpiece is slidably arranged in the guide groove;

[0016] The processing head also includes a retaining cover, which is connected to the end of the radial adjustment seat away from the base and is used to limit the processing workpiece from sliding axially away from the radial adjustment hole; wherein, the retaining cover is provided with a feed port, and the feed port is arranged corresponding to the processing space.

[0017] According to some embodiments of the present invention, the radial adjustment seat is provided with an annular ridge on the edge of one end away from the base, the retaining cover is threadedly connected to the annular ridge, and the rolling wheel of the processing part is located on the inner side of the annular ridge.

[0018] According to some embodiments of the present invention, the workpiece includes a guide rod and a rolling wheel connected to each other, wherein the guide rod is inserted into the radial adjustment hole and inserted into the guide groove, and the retaining cover is used to axially limit the rolling wheel from the end of the guide rod;

[0019] Wherein, the guide rod is provided with a first bearing for rolling on the guide groove; and / or, the guide rod is provided with a second bearing for rolling on the radial adjustment hole.

[0020] According to some embodiments of the present invention, the first bearing and / or the second bearing is a needle roller bearing.

[0021] According to some embodiments of the present invention, the base is provided with a second easing hole along its axial direction, and the first easing hole and the second easing hole are provided correspondingly.

[0022] In a second aspect, an embodiment of the present application provides a shaft processing device, including the above-mentioned processing head.

[0023] It can be seen from the above technical solution that the embodiment of the present application has the following advantages: if the processing head needs to adapt to shafts of different diameters, the staff releases the circumferential restriction between the base and the radial adjustment seat by the locking member, and operates the radial adjustment seat to rotate circumferentially. In the process of circumferential rotation of the radial adjustment seat, the radial adjustment seat uses the radial adjustment hole in its circumferential direction to act on the workpiece. Because the spacing between the radial adjustment hole and the first clearance hole is gradually increased from one end to the other end of the radial adjustment hole, each workpiece slides along the radial direction of the base under the action of the radial adjustment seat, thereby adjusting the spacing between the workpieces 200. Therefore, the processing space formed between the workpieces is gradually increased or decreased, thereby adapting to shafts of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the processing head according to an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the exploded structure of the processing head according to an embodiment of the present utility model;

[0026] Figure 3 This is a partial exploded schematic diagram of the structure of the processing head according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the assembly structure of the radial adjustment seat and the locking member according to an embodiment of the present utility model.

[0028] The meanings of the reference numerals are as follows:

[0029] 100, base; 110, annular groove; 120, guide groove; 130, second clearance hole; 200, workpiece; 210, guide rod; 220, rolling wheel; 230, processing space; 300, radial adjustment seat; 310, annular protrusion; 311, annular groove; 320, radial adjustment hole; 330, first clearance hole; 340, annular ridge; 400, locking member; 500, retaining cover; 510, feed port; 600, first bearing; 700, second bearing. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, upper, lower, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0032] In the description of this utility model, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0035] The present invention will be further described in detail below with reference to the accompanying drawings.

[0036] See also Figures 1 to 2, a processing head provided by an embodiment of the present invention includes a base 100, a radial adjustment seat 300, at least three groups of processing parts 200 and a locking part 400, wherein the base 100 and the radial adjustment seat 300 are arranged in a cylindrical shape and are coaxially arranged, and one end of the base 100 is rotatably connected to one end of the radial adjustment seat 300. The radial adjustment seat 300 is provided with a first clearance hole 330 and a plurality of radial adjustment holes 320, and the first clearance hole 330 and the plurality of radial adjustment holes 320 both pass through the two ends of the radial adjustment seat 300. The first clearance hole 330 is extended along the rotation center axis of the radial adjustment seat 300, and the plurality of radial adjustment holes 320 are extended in sequence around the circumferential direction of the first clearance hole 330, and the distance between the radial adjustment hole 320 and the first clearance hole 330 is roughly enlarged from one end to the other end of the radial adjustment hole 320 (refer to Figure 3 ); at least three groups of workpieces 200 and radial adjustment holes 320 are provided, each of which is inserted into the radial adjustment holes 320 and slidably mounted on the base 100 along the radial direction of the base 100. A processing space 230 corresponding to the first clearance hole 330 is formed between the multiple workpieces 200. A locking member 400 is connected to the base 100 and the radial adjustment seat 300 to relatively fix the base 100 and the radial adjustment seat 300. When the radial adjustment seat 300 rotates relative to the base 100, the radial adjustment seat 300 drives each workpiece 200 to slide synchronously along the radial direction of the base 100 through the radial adjustment holes 320 to adjust the size of the processing space 230.

[0037] Specifically, when the processing head is in use, the shaft extends into the processing space 230 between the multiple processing parts 200. Then, driven by an external power source, the processing parts 200 move relative to each other in the circumferential direction of the shaft, thereby rolling the circumferential surface of the shaft. For example, the processing parts 200 roll out threads or patterns on the circumferential surface of the shaft. A first clearance hole 330 is provided in the axial direction of the radial adjustment seat 300. When the processing parts 200 are processing the shaft, the first clearance hole 330 can make way for the shaft to extend, allowing the shaft to extend a sufficient length into the processing head. Therefore, the processing parts 200 can roll out the patterns on the circumferential surface of the shaft over a sufficient length.

[0038] If the machining head needs to accommodate shafts of different diameters, the operator releases the circumferential restriction between the base 100 and the radial adjustment seat 300 imposed by the locking member 400 and operates the radial adjustment seat 300 to rotate circumferentially. During this circumferential rotation, the radial adjustment seat 300 utilizes its circumferential radial adjustment holes 320 to act on the workpieces 200. Because the spacing between the radial adjustment holes 320 and the first clearance holes 330 increases gradually from one end to the other, the workpieces 200 slide radially along the base 100 under the action of the radial adjustment seat 300, thereby adjusting the spacing between the workpieces 200. Consequently, the machining space 230 formed between the workpieces 200 is gradually increased or decreased to accommodate shafts of different diameters.

[0039] In some embodiments, reference Figure 2 and Figure 3 The base 100 has a second clearance hole 130 formed along its central axis, with one end of the first clearance hole 330 corresponding to one end of the second clearance hole 130. In a specific application, when the workpiece 200 is machining a shaft, the shaft can extend through the first clearance hole 330 into the second clearance hole 130. This allows the shaft to extend a sufficient length into the interior of the machining head, allowing the workpiece 200 to roll-form a pattern on the shaft's circumference over a sufficient length.

[0040] In order to realize the rotation connection between the base 100 and the radial adjustment base 300, in some embodiments, referring to Figure 2 and Figure 3 One of the base 100 and the radial adjustment seat 300 is provided with an annular protrusion 310, and the other is provided with an annular groove 110. The annular protrusion 310 is rotatably embedded in the annular groove 110, thereby allowing the radial adjustment seat 300 to be rotatably mounted on the base 100. The locking member 400 can be a screw. The locking member 400 is threadedly connected to the outer portion of the annular groove 110, and the inner end of the locking member 400 abuts against the annular protrusion 310, thereby circumferentially fixing the base 100 and the radial adjustment seat 300. For example, the annular groove 110 is provided at one end of the base 100 close to the radial adjustment seat 300, and the annular protrusion 310 is provided at one end of the radial adjustment seat 300 close to the base 100. The annular protrusion 310 is rotatably embedded in the annular groove 110, and the locking member 400 is threadedly connected to the outer portion of the annular groove 110 to abut against the side wall of the annular protrusion 310.

[0041] It is understood that when the size of the processing space 230 needs to be adjusted, the staff loosens the locking member 400, thereby releasing the circumferential fixation between the base 100 and the radial adjustment seat 300, and then can easily rotate the radial adjustment seat 300 to adjust the processing space 230 to the appropriate size. The staff then tightens the locking member 400, and the inner end of the locking member 400 abuts against the annular protrusion 310, thereby circumferentially fixing the base 100 and the radial adjustment seat 300, thereby fixing each workpiece 200 in the adjusted position, and the processing space 230 maintains the adjusted size.

[0042] Further, refer to Figure 3 and Figure 4 The annular protrusion 310 is provided with an annular groove 311 on its outer circumferential surface, and the inner end of the locking member 400 is inserted into the annular groove 311. With this arrangement, the locking member 400 can effectively axially restrict the radial adjustment seat 300, so that the radial adjustment seat 300 can remain installed on the end of the base 100. It is understandable that when the base 100 and the radial adjustment seat 300 adopt the above-mentioned connection method, the staff can separate the locking member 400 from the annular groove 311, thereby conveniently installing and removing the base 100 and the radial adjustment seat 300.

[0043] Furthermore, the cross section of the annular groove 311 is V-shaped, or the opening of the annular groove 311 is chamfered at a right angle, thereby enlarging the opening of the annular groove 311; at the same time, the inner end of the locking member 400 is truncated or conical, so as to be adapted to the annular groove 311. It is understood that when the locking member 400 fixes the radial adjustment seat 300, the inner end of the locking member 400 is inserted and fixed in the annular groove 311, and there is a sufficiently large contact area between the two, thereby ensuring that the locking member 400 can firmly fix the radial adjustment seat 300, and further ensuring that the workpiece 200 can be firmly maintained in its adjusted position to adapt to the shaft of the corresponding diameter.

[0044] In order to achieve radial sliding of the workpiece 200 under the action of the radial adjustment seat 300, in some embodiments, referring to Figure 2 and Figure 3 A U-shaped guide groove 120 is provided at one end of the base 100, near the radial adjustment seat 300. The guide groove 120 extends radially along the base 100. The number of guide grooves 120 is equal to the number of workpieces 200. The inner end of each workpiece 200 passes through the radial adjustment hole 320 and is inserted into the corresponding guide groove 120. As a result, the workpiece 200 slides radially along the guide groove 120 and is mounted on the base 100. Therefore, when the radial adjustment seat 300 rotates circumferentially, it drives the workpiece 200 to slide along the guide groove 120, thereby adjusting the distance between the workpieces 200.

[0045] To keep the workpiece 200 slidingly disposed within the guide groove 120, the machining head further includes a retaining cover 500. The retaining cover 500 is connected to the end of the radial adjustment seat 300 away from the base 100. The inner side of the retaining cover 500 blocks the outer end of the workpiece 200. Thus, the retaining cover 500 effectively restricts the workpiece 200 from axially sliding away from the guide groove 120 and the radial adjustment hole 320. Furthermore, the retaining cover 500 is provided with an inlet 510 at its center. The inlet 510 is arranged corresponding to the machining space 230, so that the shaft can pass through the inlet 510 and penetrate into the machining space 230.

[0046] It is understood that when the processing head is installed, after the radial adjustment seat 300 is assembled on the base 100, the inner end of the processing piece 200 can be easily inserted into the guide groove 120 after passing through the radial adjustment hole 320. Conversely, the processing piece 200 can be easily removed from the guide groove 120 and the radial adjustment hole 320. In a specific application, the shaft can be extended from the feed port 510 of the retaining cover 500 into the processing space 230 between the processing pieces 200, and the processing pieces 200 can be rolled and textured on the circumferential surface of the shaft.

[0047] In other embodiments, the guide groove 120 may also be configured as a T-shape, and the inner end portion of the workpiece 200 may also be configured as a T-shape, so as to be slidably disposed within the guide groove 120. In this manner, the workpiece 200 can be retained and mounted on the end portion of the base 100 via the guide groove 120, without the need for a corresponding retaining cover 500 to prevent the workpiece 200 from sliding off the base 100.

[0048] In some embodiments, reference Figure 2 and Figure 3 The workpiece 200 includes a guide rod 210 and a rolling wheel 220, wherein the rolling wheel 220 is connected to the outer end of the guide rod 210 and is arranged coaxially. The inner end of the guide rod 210 is inserted into the radial adjustment hole 320 and inserted into the guide groove 120. The retaining cover 500 is used to axially limit the rolling wheel 220 away from the end of the guide rod 210. The processing space 230 is formed between the plurality of rolling wheels 220. Specifically, when adjusting the size of the processing space 230, during the rotation adjustment process of the radial adjustment seat 300, the guide rod 210 can smoothly slide within the guide groove 120 and the radial adjustment hole 320, thereby adjusting the spacing between the rolling wheels 220 and, in turn, the size of the processing space 230. In use, after the shaft member extends into the processing space 230 between the rolling wheels 220, the rolling wheels 220 move relative to each other in the circumferential direction of the shaft member, thereby rolling the circumferential surface of the shaft member.

[0049] In order to enable the guide rod 210 to slide smoothly along the guide groove 120, in some embodiments, referring to Figure 2 and Figure 3 The processing head further includes a first bearing 600, which is connected to the end of the guide rod 210 away from the rolling wheel 220. The first bearing 600 is configured to roll within the guide groove 120. Therefore, when radially adjusting the workpiece 200, the guide rod 210 rolls within the guide groove 120 using the first bearing 600, thereby sliding along the guide groove 120, thereby smoothly adjusting the position of the rolling wheel 220 in the radial direction.

[0050] In order to enable the guide rod 210 to slide smoothly along the guide groove 120, in some embodiments, referring to Figure 2 and Figure 3 The processing head further includes a second bearing 700 connected to the side of the guide rod 210 and configured to roll within the guide groove 120. Therefore, when radially adjusting the workpiece 200, the guide rod 210 rolls within the radial adjustment hole 320 using the second bearing 700, thereby sliding along the radial adjustment hole 320, thereby smoothly radially adjusting the position of the rolling wheel 220.

[0051] Among them, the first bearing 600 and the second bearing 700 can be needle bearings. When the processing part 200 processes the shaft, the first bearing 600 and the second bearing 700 have good strength, so that they can support the processing part 200 to roll the surface of the shaft.

[0052] In some embodiments, reference Figure 2 and Figure 3 The radial adjustment seat 300 has an annular ridge 340 on its edge at the end away from the base 100. A machining cavity is formed inside the annular ridge 340. The rolling wheel 220 of the workpiece 200 is located inside the annular ridge 340, that is, within the machining cavity. The retaining cover 500 is threadedly connected to the annular ridge 340. It will be appreciated that the radial adjustment seat 300 forms a machining cavity through the provision of the annular ridge 340, providing a location for rolling the workpiece and having a relatively simple structure.

[0053] The present application discloses a shaft processing device, comprising the above-mentioned processing head.

[0054] It is understandable that, referring to Figure 2 and Figure 3The shaft processing equipment adopts the above-mentioned processing head. If the processing head needs to adapt to shafts of different diameters, the staff releases the circumferential restriction between the base 100 and the radial adjustment seat 300 by the locking member 400, and operates the radial adjustment seat 300 to rotate circumferentially. In the process of circumferential rotation of the radial adjustment seat 300, the radial adjustment seat 300 uses the radial adjustment hole 320 in the circumferential direction to act on the workpiece 200. Because the spacing between the radial adjustment hole 320 and the first clearance hole 330 is gradually increased from one end to the other end of the radial adjustment hole 320, each workpiece 200 slides along the radial direction of the base 100 under the action of the radial adjustment seat 300, thereby adjusting the spacing between the workpieces 200. Therefore, the processing space 230 formed between the workpieces 200 is gradually increased or decreased to adapt to shafts of different diameters. It can be seen that when the shaft processing equipment needs to process shafts of different diameters, the staff does not need to replace the processing head, and can easily adjust the position of the processing part 200 of the processing head to adapt to shafts of different diameters. Therefore, the shaft processing equipment is more convenient to use and reduces the work intensity of the staff.

[0055] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A processing head, characterized in that: include: Base (100); A radial adjustment seat (300) is rotatably connected to the base (100), and the radial adjustment seat (300) is provided with a first clearance hole (330) and a plurality of radial adjustment holes (320), wherein the first clearance hole (330) is extended along the rotation center axis of the radial adjustment seat (300), and the plurality of radial adjustment holes (320) are sequentially extended in the circumferential direction around the first clearance hole (330), and the distance between the radial adjustment hole (320) and the first clearance hole (330) is increased from one end to the other end of the radial adjustment hole (320); At least three groups of processing pieces (200) are provided, the number of which is equal to the number of the radial adjustment holes (320), the processing pieces (200) are respectively passed through the radial adjustment holes (320) and are slidably provided on the base (100) along the radial direction of the base (100), and processing spaces (230) corresponding to the first clearance holes (330) are formed between the processing pieces (200); a locking member (400) connected to the base (100) and the radial adjustment seat (300) and used to relatively fix the base (100) and the radial adjustment seat (300); When the radial adjustment seat (300) rotates relative to the base (100), the radial adjustment seat (300) drives each of the processing parts (200) to slide synchronously along the radial direction of the base (100) through the radial adjustment hole (320) to adjust the size of the processing space (230).

2. The processing head according to claim 1, characterized in that One of the base (100) and the radial adjustment seat (300) is provided with an annular protrusion (310), and the other is provided with an annular groove (110). The annular protrusion (310) is rotatably embedded in the annular groove (110), and the locking member (400) is threadedly connected to the side of the annular groove (110) for abutting against the annular protrusion (310).

3. The processing head according to claim 2, characterized in that The annular protrusion (310) is provided with an annular groove (311) on the outer peripheral surface, and the inner end portion of the locking member (400) is used for being inserted into the annular groove (311).

4. The processing head according to claim 3, characterized in that The cross section of the annular groove (311) is V-shaped, or the opening of the annular groove (311) is arranged at a chamfered right angle; The inner end portion of the locking member (400) is configured in a frustum or cone shape to fit the annular slot (311).

5. The processing head according to claim 1, characterized in that The end of the base (100) is provided with a guide groove (120) along its radial direction, and the end of the processing piece (200) is slidably arranged in the guide groove (120); The processing head further comprises a retaining cover (500), wherein the retaining cover (500) is connected to an end of the radial adjustment seat (300) away from the base (100) and is used to limit the processing part (200) from sliding axially away from the radial adjustment hole (320); wherein the retaining cover (500) is provided with a feed port (510), and the feed port (510) is arranged corresponding to the processing space (230).

6. The processing head according to claim 5, characterized in that The radial adjustment seat (300) is provided with an annular ridge (340) at the edge of one end away from the base (100), the retaining cover (500) is threadedly connected to the annular ridge (340), and the rolling wheel (220) of the processing part (200) is located on the inner side of the annular ridge (340).

7. The processing head according to claim 5, characterized in that The workpiece (200) comprises a guide rod (210) and a rolling wheel (220) connected to each other, wherein the guide rod (210) is inserted into the radial adjustment hole (320) and plugged into the guide groove (120), and the retaining cover (500) is used to axially limit the rolling wheel (220) from moving away from the end of the guide rod (210); The guide rod (210) is provided with a first bearing (600) for rolling on the guide groove (120); and / or the guide rod (210) is provided with a second bearing (700) for rolling on the radial adjustment hole (320).

8. The processing head according to claim 7, characterized in that The first bearing (600) and / or the second bearing (700) are needle bearings.

9. The processing head according to claim 1, characterized in that The base (100) is provided with a second evacuation hole (130) along its axial direction, and the first evacuation hole (330) is provided corresponding to the second evacuation hole (130).

10. A shaft processing device, characterized in that: The processing head comprises the processing head according to any one of claims 1 to 9.

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