Micro milling cutter with auxiliary limiting function

Abstract

The utility model belongs to the technical field of milling cutters, and particularly relates to a micro milling cutter with an auxiliary limiting function, aiming at the problem that the existing micro milling cutter is easy to jump, the micro milling cutter comprises a cutter body, a positioning groove is formed in the outer wall of the cutter body, and an adjusting mechanism is arranged outside the positioning groove; the adjusting mechanism comprises a rotating block, the rotating block is connected to the outer wall of the cutter body in a sliding mode, a rotating groove is formed in the outer wall of the rotating block, and a containing groove is formed in the outer wall of the rotating groove. The rotating block rotates in a clamped mode through the rotating groove and the limiting hole of the sleeve, and the position of the rotating block can be adjusted according to the drilling distance of the cutter body; through cooperation of the positioning groove and the positioning block, the situation that the sleeve rotates when abutting against an object, so that the outer wall of the object is rubbed and damaged is avoided, the auxiliary limiting effect is achieved, the situation that the cutter body deflects and jumps in the machining process is avoided, and meanwhile the rotating smoothness of the sleeve is improved in cooperation with the roller in the containing groove.

Description

Technical Field

[0001] This utility model relates to a micro milling cutter, specifically a micro milling cutter with auxiliary limiting function, belonging to the field of milling cutter technology. Background Technology

[0002] With the development of technology, the application of micro-tools is becoming more and more widespread, and the requirements are becoming more and more stringent. Because micro-tools mill smaller workpieces, the size of micro-tools is also correspondingly smaller.

[0003] In the prior art, such as the single-edged micro milling cutter with chip removal groove disclosed in CN216881915U, a chip removal groove is provided on the lower side of the chip collection groove, and the chip collection groove is connected to the chip removal groove, which can clean up the waste chips generated by milling in a timely manner, avoid the accumulation of waste chips on the workpiece surface and cause secondary damage to the workpiece, and provide heat dissipation holes on the side of the cutter head near the cutting edge, which can dissipate heat from the cutter head and prevent high temperature from damaging it.

[0004] However, in implementing the relevant technology, it was found that the single-edged micro end mill with chip removal grooves of the above design has the following problems: Although the micro end mills in the prior art have chip removal function, in the actual use process, due to the small inner diameter of the micro end mill, it is easy to deflect or jump during the machining operation. In view of this, a micro end mill with auxiliary limiting function is provided to overcome the above defects. Utility Model Content

[0005] This invention addresses the technical problem of misalignment or runout during machining operations caused by the small inner diameter of micro end mills by providing a micro end mill with an auxiliary limiting function.

[0006] The present invention achieves the above objectives through the following technical solution: a micro milling cutter with auxiliary limiting function, comprising a cutter body, wherein a positioning groove is provided on the outer wall of the cutter body, and an adjustment mechanism is provided outside the positioning groove;

[0007] The adjustment mechanism includes a rotating block, which is slidably connected to the outer wall of the blade body. The outer wall of the rotating block is provided with a rotating groove, and the outer wall of the rotating groove is provided with a placement groove. A roller is rotatably connected inside the placement groove. A sleeve is fitted on one side of the rotating block outside the blade body, and a limit hole is provided at the top of the sleeve corresponding to the position of the rotating groove.

[0008] As a further improvement of this utility model, the adjustment mechanism also includes a through hole, which is opened on the inner wall of the sleeve, and a positioning block is fixed inside the through hole at the position corresponding to the positioning groove.

[0009] As a further embodiment of this utility model: the rotating block is threadedly connected to the blade body, and the rotating block is rotatably connected to the sleeve.

[0010] As a further improvement of this utility model: the sleeve and the roller are closely fitted together, and the roller forms a sliding structure between the positioning block and the positioning groove.

[0011] As a further embodiment of this utility model: an abutting mechanism is provided below the sleeve, the abutting mechanism includes a through rod, the through rod extends out of the bottom end of the sleeve, and a spring is fixed to one end of the through rod inside the sleeve.

[0012] As a further embodiment of this utility model: the contact mechanism further includes a contact plate, which is fixed to the bottom end of the through rod, and the contact plate has a through hole at the position corresponding to the blade body.

[0013] As a further embodiment of this utility model: the protruding rod forms an elastic structure between the spring and the sleeve, and the sleeve forms a telescopic structure between the protruding rod and the contact plate.

[0014] The beneficial effects of this utility model are: the rotating block rotates through the rotating groove and engages with the limiting hole of the sleeve, and the position of the rotating block can be adjusted according to the drilling distance of the tool body. Through the cooperation of the positioning groove and the positioning block, the sleeve is prevented from rotating when it comes into contact with the object, thereby avoiding friction damage to the outer wall of the object. It also plays an auxiliary limiting role, preventing the tool body from deflecting or jumping during the processing. At the same time, the roller inside the placement groove improves the smoothness of the sleeve rotation.

[0015] The spring pushes the through rod, causing the contact plate to elastically abut against the outer wall of the object. The elastic contraction of the spring reserves the size of the drilling distance of the blade, preventing the blade from being limited and unable to drill. At the same time, the through hole reserves the position for the blade to fit against the object. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the rotating block structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the positioning block structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the through rod structure of this utility model.

[0020] In the diagram: 1. Blade body; 2. Positioning groove; 3. Adjustment mechanism; 301. Rotating block; 302. Rotating groove; 303. Placement groove; 304. Roller; 305. Sleeve; 306. Limiting hole; 307. Through hole; 308. Positioning block; 4. Abutting mechanism; 401. Through rod; 402. Spring; 403. Abutting plate; 404. Through hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0022] like Figures 1 to 4 As shown, a micro-end mill with auxiliary limiting function includes a cutter body 1. A positioning groove 2 is formed on the outer wall of the cutter body 1, and an adjustment mechanism 3 is provided outside the positioning groove 2. The adjustment mechanism 3 includes a rotating block 301, which is slidably connected to the outer wall of the cutter body 1. A rotating groove 302 is formed on the outer wall of the rotating block 301, and a mounting groove 303 is formed on the outer wall of the rotating groove 302. A roller 304 is rotatably connected inside the mounting groove 303. A sleeve 305 is fitted onto one side of the rotating block 301 outside the cutter body 1. A limiting hole 306 is formed at the top of the sleeve 305 corresponding to the position of the rotating groove 302. The adjustment mechanism 3 also includes a through hole 307, which is formed on the inner wall of the sleeve 305. A limiting hole 306 is fixed inside the through hole 307 corresponding to the position of the positioning groove 2. The positioning block 308 and the rotating block 301 are threadedly connected to the tool body 1. The rotating block 301 is rotatably connected to the sleeve 305. The sleeve 305 is tightly fitted with the roller 304. The roller 304 forms a sliding structure between the positioning block 308 and the positioning groove 2. The rotating block 301 is engaged with the limiting hole 306 of the sleeve 305 through the rotating groove 302. The position of the rotating block 301 can be adjusted according to the drilling distance of the tool body 1. Through the cooperation of the positioning groove 2 and the positioning block 308, the sleeve 305 is prevented from rotating when it comes into contact with the object, thereby avoiding friction damage to the outer wall of the object. It also plays an auxiliary limiting role, preventing the tool body 1 from deflecting or jumping during the processing. At the same time, it cooperates with the roller 304 inside the mounting groove 303 to improve the smoothness of the rotation of the sleeve 305. Example 2

[0023] In addition to all the technical features included in Embodiment 1, this embodiment also includes: a contact mechanism 4 disposed below the sleeve 305, the contact mechanism 4 including a through rod 401 extending out of the bottom end of the sleeve 305, a spring 402 fixed to one end of the through rod 401 inside the sleeve 305, the contact mechanism 4 also including a contact plate 403 fixed to the bottom end of the through rod 401, and a through hole 403 provided on the contact plate 403 corresponding to the position of the blade body 1. 4. The through rod 401 forms an elastic structure with the sleeve 305 through the spring 402. The sleeve 305 forms a telescopic structure with the contact plate 403 through the through rod 401. The through rod 401 is pushed by the spring 402, so that the contact plate 403 elastically abuts against the outer wall of the object. The elastic contraction of the spring 402 reserves the size of the drilling distance of the blade 1, so as to avoid the blade 1 being limited and unable to drill. At the same time, the through hole 404 reserves the position for the blade 1 to fit with the object.

[0024] Working principle: The rotating block 301 rotates by engaging with the limiting hole 306 of the sleeve 305 through the rotating groove 302. The distance between the rotating block 301 and the cutter body 1 is adjusted according to the drilling distance of the cutter body 1. When rotating, the roller 304 embedded in the mounting groove 303 slides against the sleeve 305, thereby improving the smoothness of rotation and avoiding excessive friction that causes shaking. At the same time, the sleeve 305 against the object plays an auxiliary limiting role. The positioning block 308 fixed in the through hole 307 on the inner wall of the sleeve 305 slides along the positioning groove 2 and limits the movement, preventing the sleeve 305 from rotating after contacting the object, thus avoiding wear on the outer wall of the object. Inside the sleeve 305, the spring 402 elastically pushes the through rod 401, allowing the contact plate 403 to contact the object. The elastic extension and contraction of the spring 402 is used to reserve the drilling distance of the cutter body 1. The cutter body 1 is allowed to pass through the through hole 404 and contact the object.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A micro-end mill with auxiliary limiting function, comprising a cutter body (1), characterized in that: The outer wall of the blade (1) is provided with a positioning groove (2), and an adjustment mechanism (3) is provided outside the positioning groove (2). The adjustment mechanism (3) includes a rotating block (301), which is slidably connected to the outer wall of the blade body (1). The outer wall of the rotating block (301) is provided with a rotating groove (302). The outer wall of the rotating groove (302) is provided with a placement groove (303). A roller (304) is rotatably connected inside the placement groove (303). A sleeve (305) is sleeved on one side of the rotating block (301) outside the blade body (1). A limit hole (306) is provided at the top of the sleeve (305) corresponding to the position of the rotating groove (302).

2. A micro-milling cutter with auxiliary limiting function according to claim 1, characterized in that: The adjustment mechanism (3) also includes a through hole (307), which is opened on the inner wall of the sleeve (305), and a positioning block (308) is fixed inside the through hole (307) at the position corresponding to the positioning groove (2).

3. A micro-milling cutter with auxiliary limiting function according to claim 1, characterized in that: The rotating block (301) is threadedly connected to the blade body (1), and the rotating block (301) is rotatably connected to the sleeve (305).

4. A micro-milling cutter with auxiliary limiting function according to claim 1, characterized in that: The sleeve (305) is in close contact with the roller (304), and the roller (304) forms a sliding structure between the positioning block (308) and the positioning groove (2).

5. A micro-milling cutter with auxiliary limiting function according to claim 1, characterized in that: A contact mechanism (4) is provided below the sleeve (305). The contact mechanism (4) includes a through rod (401). The through rod (401) extends out of the bottom end of the sleeve (305), and a spring (402) is fixed at one end of the through rod (401) inside the sleeve (305).

6. A micro-milling cutter with auxiliary limiting function according to claim 5, characterized in that: The contact mechanism (4) also includes a contact plate (403), which is fixed to the bottom end of the through rod (401), and the contact plate (403) has a through hole (404) at the position corresponding to the blade (1).

7. A micro-milling cutter with auxiliary limiting function according to claim 6, characterized in that: The protruding rod (401) forms an elastic structure with the sleeve (305) through the spring (402), and the sleeve (305) forms a telescopic structure with the contact plate (403) through the protruding rod (401).

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