Reverse countersink tool bit assembly facilitating chip returning
By designing a counterstolic head assembly with an assembled structure, the cutting edge direction of the blade is not parallel to the axis of the head body, which solves the problem that iron chips are not prone to anti-chips, extends the tool life and improves the surface quality of the processed parts.
Patent Information
- Application Number
- CN202422159597.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-04
AI Technical Summary
During the processing of existing tools, iron chips are not prone to anti-chip, resulting in low tool life and poor surface quality of the processed parts.
A counterstolic cutter head assembly is designed for easy anti-chip, adopting an assembled structure, the blade is tightened into the installation groove of the cutting edge of the cutting head body, and the blade cutting edge direction is not parallel to the axis of the cutting head body, and is at an angle, which facilitates the iron chips to reverse chips outward.
Through this design, the blade only needs to be replaced after the blade is worn to reduce losses; the blades are arranged internally and externally to reduce wear; iron chips facilitate anti-chip, avoid accumulation, and improve the surface quality of the workpiece and tool life.
Smart Images
Figure CN223043689U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of machining, and specifically relates to a counterboring cutter head assembly facilitating chip evacuation, which is a tool for counterboring the orifice in the reverse direction. Background Art
[0002] At present, in the field of machining, for counterboring the orifice in the reverse direction, the cutter head assembly mostly adopts the way of welding the cutter head body and the blade. After the blade is worn, the whole cutter head is scrapped; the blades are not arranged separately inside and outside, the using positions of the cutting edges of the blades are the same, and the forces are the same, which is not conducive to chip breaking; moreover, the cutting edge of the blade is parallel to the axis of the cutter head body, without a chip evacuation angle, and the chips accumulate near the blade, which is not convenient for chip evacuation. The accumulated chips increase the wear of the blade, damage the cutter head, and destroy the surface quality of the workpiece during counterboring. Content of the Utility Model
[0003] The purpose of the utility model is to overcome the deficiencies of the existing tool, and provide a counterboring cutter head assembly facilitating chip evacuation, mainly solving problems such as low tool life and poor surface quality of the workpiece caused by difficult chip evacuation during the machining process.
[0004] The technical solution provided by the utility model is: a counterboring cutter head assembly facilitating chip evacuation, which is composed of a cutter head body and an even number of blades. The cutter head body is provided with a guiding and positioning hole and an anti-rotation structure for cooperating with the tool shank; the special feature is that an assembled structure is adopted. The cutter head body has an even number of mounting grooves conforming to the shape of the blades, which are arranged on the cutter head body at the same interval angle β, and for two adjacent mounting grooves, one is closer to the inner side and the other is closer to the outer side; the blades are fastened into the mounting grooves of the cutter head body, and for two adjacent mounting grooves, one is closer to the inner side and the other is closer to the outer side.
[0005] Further, the even number of blades are slightly higher than the cutter head body, and all the blades have the same height.
[0006] Further, when the even number of blades are installed into the mounting grooves, the direction of the cutting edge of the blade is not parallel to the axis of the cutter head body, forming an angle a.
[0007] The beneficial effects of the utility model are as follows: 1. An assembled structure is adopted, and only the blade needs to be replaced after the blade is worn, reducing the loss cost; 2. The blades are arranged separately inside and outside, so that the using positions of the cutting edges of every two adjacent blades are different and the forces are different, facilitating chip breaking; 3. The direction of the cutting edge of the blade is not parallel to the axis of the cutter head body, forming an angle a, facilitating chip evacuation outwards, eliminating the damage to the surface quality of the workpiece and the abnormal wear of the tool caused by inconvenient chip evacuation; 4. The counterboring cutter head can be used for machining the counterboring of orifices of various specifications, the tool has good versatility, the tool life is improved, the production cost is reduced, and the quality of the workpiece is improved. Description of the Drawings
[0008] Figure 1 is the front view structural schematic diagram of the present utility model;
[0009] Figure 2 is the top view structural schematic diagram of the present utility model.
[0010] In the figure: 1. cutter head body, 2. blade, 3. screw, 4. guiding and positioning hole and anti-rotation structure, 5. installation groove. Specific embodiments
[0011] For better understanding and implementation, the present utility model will be described in detail below with reference to the accompanying drawings.
[0012] As Figure 1 , 2 shown, taking the example of installing four blades, a counterboring cutter head assembly facilitating chip breaking is composed of a cutter head body 1 and an even number of blades 2. The even number of blades 2 is four, and the number of screws 3 is four. An assembly structure is adopted. Four installation grooves 5 conforming to the profile of the blades 2 and a guiding and positioning hole and anti-rotation structure 4 for cooperating with the tool shank are provided on the cutter head body 1; the blades 2 are fastened into the installation grooves 5 of the cutter head body 1 through the screws 3. The four blades 2 are arranged on the cutter head body 1 at an interval of 90° (β is equal to 90°); and for every two adjacent installation grooves, one is closer to the inside and the other is closer to the outside; the blades 2 are slightly higher than the cutter head body 1, and all the blades 2 have the same height; the cutting edge direction of the blades 2 is not parallel to the axis of the cutter head body, forming an a angle, which facilitates the chips to break outward during processing.
[0013] The counterboring cutter head assembly facilitating chip breaking of the present utility model adopts an assembled structure. After the blades are worn, only the blades need to be replaced. The blades are arranged in an inside and outside manner, so that the cutting edge use positions of every two adjacent blades are different, reducing the blade wear condition; the cutting edge direction of the blades is not parallel to the axis of the cutter head body, forming an a angle, which facilitates the chips to break outward and can be used for the processing of reverse counterboring of various specification orifice openings.
[0014] It should be understood that the technical features not elaborated in detail in this specification all belong to the prior art. Although the embodiments of the utility model patent are described above with reference to the accompanying drawings, the present utility model is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Those of ordinary skill in the art can, under the inspiration of the present utility model and without departing from the purpose of the present utility model and the scope protected by the claims, still make more forms, and all these fall within the protection scope of the present utility model.
Claims
1. A countersinking cutter head assembly for facilitating chip removal, comprising a cutter head body (1) and an even number of blades (2), wherein the cutter head body (1) is provided with a guide positioning hole and an anti-rotation structure (4) for cooperating with a cutter rod; the characteristics are as follows: An assembled structure is adopted, wherein an even number of mounting grooves (5) are provided on the cutter head body (1) and are shaped like the blades (2), and are arranged on the cutter head body (1) at the same interval angle β, and two adjacent mounting grooves (5) are located one on the inner side and one on the outer side; the blades (2) are fastened into the mounting grooves (5) of the cutter head body (1), and two adjacent mounting grooves are located one on the inner side and one on the outer side.
2. The countersinking cutter head assembly for facilitating chip removal according to claim 1, characterized in that: The even-numbered blades (2) are higher than the blade head body (1), and all the blades (2) have the same height.
3. The countersinking cutter head assembly for facilitating chip removal according to claim 1, characterized in that: The even-numbered blades (2) are installed in the installation groove (5), and the direction of the blade cutting edge is not parallel to the axis of the cutter head body, but forms an angle a.