CN222199035U

CN222199035U - Drilling and milling cutter for efficient taper hole machining

Info

Publication number: CN222199035U
Application number: CN202323585873.7U
Authority: CN
Inventors: 马锡庆; 曹浩军; 宗传道
Original assignee: Yuantao Changzhou Precision Cutting Technology Co ltd
Current assignee: Yuantao Changzhou Precision Cutting Technology Co ltd
Priority date: 2023-12-27
Filing date: 2023-12-27
Publication date: 2024-12-20
Anticipated expiration: 2033-12-27

Abstract

The utility model discloses a drilling and milling cutter for efficient taper hole machining, which comprises a handle part used for supporting, wherein the front part of the handle part is provided with a center, a main cutting edge is arranged at the bottom of the center, the main cutting edge is provided with two groups of chip grooves with 30-degree spiral angles in right-hand rotation, and a cutter back is arranged at the front part of the handle part and is close to the main cutting edge. The utility model is of an integrated drilling and milling structure, integrates the functions of drilling and milling, and has a drill bit and a milling cutter part on the cutter structure, so that one cutter can be ensured to have the functions of two cutters, the original 3 cutters are reduced to 2 cutters, the times of cutter changing are reduced, the processing cost is reduced, and the processing efficiency of workpieces is improved.

Description

Drilling and milling cutter for efficient taper hole machining

Technical Field

The utility model relates to the technical field of automobile part machining equipment, in particular to a drilling and milling cutter for efficient taper hole machining.

Background

The steering knuckle of the automobile part is commonly called as a 'claw', a workpiece of the steering knuckle is required to be punched with a taper hole with high precision, the precision of the taper hole and the finish in the hole are required to be high, the coaxiality requirement is also high, the current industry solution scheme is that a standard twist drill is used for coarse punching, a taper milling cutter is used for reaming and a taper reamer is used for finishing the final taper hole, 3 cutters are required to finish the process, but the cutter cost of the operation mode is high, the cutter changing frequency is high, the processing efficiency is reduced, and due to the fact that a plurality of cutters are adopted for processing, the superposition and accumulation of error amounts generated by the processing of each cutter lead to the reduction of the hole precision of the taper hole, and meanwhile, the coaxiality of the hole is poor, so that the high-efficiency drill milling cutter for processing the taper hole is needed to solve the problems.

Disclosure of utility model

The utility model aims to provide a drilling and milling cutter for efficiently machining a taper hole, which aims to solve the problems in the background technology.

In order to achieve the aim, the utility model provides the technical scheme that the drilling and milling cutter for efficiently machining the taper holes comprises a handle part for supporting, the front part of the handle part is provided with a center,

The main cutting edge is arranged at the bottom of the center, two groups of main cutting edges are arranged, and the two groups of main cutting edges are respectively provided with a chip groove with a spiral angle of 30 degrees;

The tool back is arranged at the front part of the handle part and close to the main cutting edge, and a secondary cutting edge is formed by the tool back and the radial outer edge of the front tool face of the chip groove;

The milling cutter is arranged at the rear part of the handle, and concave chip separation grooves which are axially arranged at equal intervals are arranged on the back of the periphery of the milling cutter.

Preferably, the top is 140 degrees settings, the top radial direction is equipped with first back knife face and second back knife face of being provided with respectively, just first back knife face is located the outside of second back knife face is 140 degrees settings top, can effectively improve accuracy and stability when punching the location to the automobile steering knuckle, and first back knife face and second back knife face can reduce cutting friction, provide the guard action for the main cutting edge, improve the life of cutter.

Preferably, the main cutting edge is arranged at an acute angle structure formed by the axial rake surface of the chip groove and the rear rake surface of the center, and can bear the main cutting task of the steering knuckle, cut off the chips on the upper part of the steering knuckle, form the processing contour of the surface of the workpiece and improve the processing efficiency.

Preferably, the cutting edge of the auxiliary cutting edge is provided with a cutting edge along the spiral line direction, the width of the cutting edge is 0.05 times of the diameter of the auxiliary cutting edge, and when the cutting edge is in contact with the surface of a workpiece, the radial runout error of the cutter can be reduced, and the processing precision and the surface quality of the workpiece are improved.

Preferably, the handle is cylindrical, the chip dividing groove is semicircular, and under the condition that quick feeding can be guaranteed by the semicircular chip dividing groove, an excellent chip inserting and milling function is realized, and machining efficiency is improved.

Preferably, the side part of the milling cutter blade is provided with a broken tooth groove, the broken tooth groove can rapidly discharge the cut chips from the outside of the cutter head, the chips are prevented from accumulating on the cutter head, and the machining efficiency of a workpiece is improved.

Compared with the prior art, the utility model has the following beneficial effects:

1. The utility model is of an integrated drilling and milling structure, integrates the functions of drilling and milling, and has a drill bit and a milling cutter part on the cutter structure, so that one cutter can be ensured to have the functions of two cutters, the original 3 cutters are reduced to 2 cutters, the times of cutter changing are reduced, the processing cost is reduced, and the processing efficiency of workpieces is improved.

2. The utility model can meet the requirements of rapid feeding and long chip breaking through the chip breaker during rough machining, is more beneficial to discharging scrap iron and increases the cutting stability of the cutter.

3. The utility model relates to a drill blade without a back-up structure, which increases the number of times of grinding the whole blade part of a cutter to 3-4 times and reduces the use cost of the cutter.

Drawings

FIG. 1 is a schematic structural view of a main body of the present utility model;

FIG. 2 is a side view of the body of the present utility model;

FIG. 3 is a partial enlarged view of the utility model at I;

Fig. 4 is an enlarged view of part II of the present utility model.

In the figure, the center is 1-center, the chip removing groove is 2-, the chip separating groove is 3-, the shank is 4-, the tool back is 5-, the milling edge is 6-, the first rear tool face is 7-, the second rear tool face is 8-, the auxiliary cutting edge is 10-and the main cutting edge is 11-.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, an embodiment of the present utility model provides a drilling and milling cutter for efficient taper hole machining, which includes a shank portion 4 for supporting, a tip 1 provided at the front of the shank portion 4,

The main cutting edge 11, the main cutting edge 11 is arranged at the bottom of the center 1, the main cutting edge 11 is provided with two groups, and the two groups of main cutting edges 11 are provided with chip grooves 2 which are spirally rotated by 30 degrees;

The tool back 5 is arranged at the front part of the handle 4 close to the main cutting edge 11, and the tool back 5 and the front tool surface of the chip groove 2 form a secondary cutting edge 10 along the radial outer edge;

The milling cutter 6, milling cutter 6 sets up in the rear portion department of stalk portion 4, and milling cutter 6's periphery back of blade is equipped with equidistant axial arrangement's indent chipbreaker 3.

As shown in fig. 1, the center 1 is 140 degrees, the radial direction of the center 1 is provided with a first rear cutter surface 7 and a second rear cutter surface 8 respectively, the first rear cutter surface 7 is located on the outer side of the second rear cutter surface 8, the center 1 is 140 degrees, the accuracy and stability of the automobile steering knuckle during punching and positioning can be effectively improved, the cutting friction of the first rear cutter surface 7 and the second rear cutter surface 8 can be reduced, a protective effect is provided for the main cutting edge 11, and the service life of a cutter is prolonged.

As shown in fig. 4, the main cutting edge 11 is arranged at an acute angle structure formed by the axial rake surface of the chip groove 2 and the rear rake surface of the center 1, and the main cutting edge 11 can bear the main cutting task of the knuckle, cut off the chips on the upper part of the knuckle, form the machining profile of the workpiece surface and improve the machining efficiency.

As shown in fig. 4, the edge of the minor cutting edge 10 is provided with a margin along the spiral line direction, the width of the margin is 0.05 times of the diameter of the minor cutting edge 10, and when the margin contacts the surface of the workpiece, the radial runout error of the cutter can be reduced, and the machining precision and the surface quality of the workpiece can be improved.

As shown in fig. 3, the handle 4 is in a cylindrical shape, the chip breaker 3 is in a semicircular shape, and the excellent chip cutting function of milling is realized to improve the processing efficiency under the condition that the quick feeding of the semicircular chip breaker 3 can be ensured.

As shown in fig. 1, the side of the milling cutter blade 6 is provided with a broken tooth slot, and the broken tooth slot can rapidly discharge the cut chips from the outside of the cutter head, so that the chips are prevented from accumulating on the cutter head, and the processing efficiency of a workpiece is improved.

Before the operation, a user can conveniently and rapidly position and connect the drilling and milling cutter through the cutter disc in the handle 4 limit cutter machining center, when the conical hole drilling and milling operation is carried out on the automobile steering knuckle, the machining center can drive the cutter disc to rotate at a high speed, the handle 4 can be firstly positioned to the upper part of a machined workpiece through the tip 1 at the bottom, then the main cutting edge 11 and the rear part 12 can rapidly drill the inside of the workpiece, chips generated by drilling can be discharged to the outside through the chip groove 2, the cylindrical hole is drilled, the machining center continuously drives the handle 4 to move downwards at a uniform speed, and the milling cutter blade 6 which is arranged in a conical shape at the periphery can gradually enlarge the cavity at the upper part of the cylindrical hole, so that the cylindrical hole on the automobile steering knuckle forms a conical hole, and the drilling operation is completed.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high-efficient taper hole processing is with boring milling cutter, is including shank (4) that are used for supporting, the front portion of shank (4) is provided with top (1), its characterized in that:

The main cutting edge (11), the main cutting edge (11) is arranged at the bottom of the center (1), the main cutting edge (11) is provided with two groups, and the two groups of main cutting edges (11) are provided with chip grooves (2) with 30-degree spiral angles;

The tool back (5) is arranged at the front part of the handle part (4) close to the main cutting edge (11), and the tool back (5) and the radial outer edge of the front tool surface of the chip groove (2) form a secondary cutting edge (10);

the milling cutter blade (6), milling cutter blade (6) set up the rear portion department of stalk portion (4), the periphery back of milling cutter blade (6) is equipped with concave type chip separating groove (3) of equidistance axial arrangement.

2. The drill and milling cutter for efficient taper hole machining according to claim 1, wherein the center (1) is arranged at 140 degrees, a first clearance surface (7) and a second clearance surface (8) are respectively arranged in the radial direction of the center (1), and the first clearance surface (7) is located on the outer side of the second clearance surface (8).

3. The drill and milling cutter for efficient taper hole machining according to claim 2, wherein the main cutting edge (11) is arranged at an acute angle structure formed by the axial rake surface of the chip groove (2) and the rear rake surface of the center (1).

4. The drill and milling cutter for efficient taper hole machining according to claim 2, wherein the cutting edge portion of the minor cutting edge (10) is provided with a margin in the direction of a spiral line, and the width of the margin is 0.05 times the diameter of the minor cutting edge (10).

5. The drilling and milling cutter for efficient taper hole machining according to claim 2, wherein the handle part (4) is in a cylindrical shape, and the chip dividing grooves (3) are in a semicircular shape.

6. The drilling and milling cutter for efficient taper hole machining according to claim 2, wherein the side part of the milling cutter blade (6) is provided with a broken tooth slot.