CN220311877U - Improved end face groove milling cutter - Google Patents

Abstract

The utility model provides an improved end face slot milling cutter, which comprises a cutting blade and a cutter bar for bearing the cutting blade; the cutter bar is of an integrated structure and comprises a cutter bar part and a clamping part, wherein the clamping part comprises an upper chuck and a lower chuck which are connected with the cutter bar part, a containing cavity for a cutting blade is formed between the upper chuck and the lower chuck, and the cutting blade is fixed in the containing cavity; a cutting insert provided with a pair of cutting portions opposed to each other, the cutting portions including a rake face, a minor relief face, a side rake face, and a side relief face, the rake face and the minor relief face intersecting to form a minor cutting edge, the minor cutting edge being horizontally disposed; the cutting blade is inclined downwards along the horizontal plane, and the included angle between the auxiliary cutting edge and the horizontal plane is 4-6 degrees. The utility model adopts the formed cutting blade, and designs the cutter bar for bearing the formed cutting blade in a matching way, so that the installation angle of the cutting blade is reasonable in design, and the safety of the cutting blade during processing is ensured.

Description

Improved end face groove milling cutter

Technical Field

The utility model belongs to the technical field of machining tools, and particularly relates to an improved end face groove milling cutter.

Background

The annular groove is processed on the end face of the disc-shaped part, the problem of interference exists in the cutter body below the cutter blade due to the length and strength of the common forming groove, the part is easy to damage and the cutter is scrapped once the cutter body collides with the part, and the annular groove on the end face of the disc-shaped part is processed by adopting the cutter, so that the cutter is required to be self-designed for sharpening, the processing quality is difficult to control, the processing efficiency is lower, and the processing period is influenced; if milling is used instead, the cost of the customized special milling cutter is high, the efficiency is low, and the processing scale is difficult to form.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides an improved end face slot milling cutter, which adopts a formed cutting blade, and is matched with a cutter bar for bearing the formed cutting blade, so that the installation angle of the cutting blade is designed reasonably, and the safety of the cutting blade during processing is ensured.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

an improved end face slot milling cutter comprises a cutting blade and a cutter bar for bearing the cutting blade;

the cutter bar is of an integrated structure and comprises a cutter bar part and a clamping part, wherein the clamping part comprises an upper chuck and a lower chuck which are connected with the cutter bar part, a containing cavity for a cutting blade is formed between the upper chuck and the lower chuck, and the cutting blade is fixed in the containing cavity;

a cutting insert provided with a pair of cutting portions opposed to each other, the cutting portions including a rake face, a minor relief face, a side rake face, and a side relief face, the rake face and the minor relief face intersecting to form a minor cutting edge, the minor cutting edge being horizontally disposed;

the cutting blade is inclined downwards along the horizontal plane, and the included angle between the auxiliary cutting edge and the horizontal plane is 4-6 degrees.

Further, the included angle between the secondary cutting edge and the horizontal plane is 5 degrees.

Further, a clearance groove is further formed between the upper chuck and the lower chuck, the clearance groove is formed in the rear end of the accommodating cavity, and the width of the clearance groove is 1.5mm.

Further, threaded holes corresponding to each other are formed in the upper chuck and the lower chuck, and screws are installed in the threaded holes in a matched mode.

Further, the front ends of the upper chuck and the lower chuck are arranged to be arc surfaces along the cutting feeding direction of the workpiece.

Further, the cutting insert is 4mm wide and is of the type GKD40.

The beneficial effects are that: according to the improved end face slot milling cutter, the formed cutting blade is adopted, the cutter bar for bearing the formed cutting blade is matched, the installation and the replacement are convenient, the installation angle of the cutting blade is reasonable, the safety of the cutting blade during machining is ensured, and the cutting efficiency is improved; meanwhile, friction between the cutter head and the surface of the workpiece during milling of the cutting blade can be reduced, cutting precision is guaranteed, and abrasion to the cutting blade is reduced.

The end face groove milling cutter has the advantages that the cutter structure is simple, the manufacture is easy, the cutting blade and the cutter bar are designed and installed at an angle, the quality of the processed part is stable, the processing efficiency of the part is improved, the service life of the cutter is prolonged, and meanwhile, the manufacturing cost of the part is reduced.

Drawings

FIG. 1 is a front view of an improved face slot milling cutter according to the present utility model;

FIG. 2 is a top view of an improved face slot milling cutter according to the present utility model;

FIG. 3 is a front view of the tool holder of the present utility model;

FIG. 4 is a front view of a cutting insert according to the present utility model;

FIG. 5 is a top view of a cutting insert according to the present utility model;

FIG. 6 is a left side view of a cutting insert according to the present utility model;

FIG. 7 is a left side view of an improved face slot milling cutter according to the present utility model;

FIG. 8 is a second left side view of an improved face slot milling cutter according to the present utility model;

fig. 9 is a third left side view of an improved face slot milling cutter according to the present utility model.

In the figure: 1 cutting insert, 11 rake face, 12 flank faces, 13 side rake face, 14 side flank face, 15 minor cutting edge, 2 shank, 21 shank portion, 22 clamping portion, 221 upper cartridge, 222 lower cartridge.

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 fall within the scope of the utility model.

As shown in fig. 1-6, the improved end face slot milling cutter provided by the utility model comprises a cutting blade 1 and a cutter bar 2 for bearing the cutting blade 1;

the cutter bar 2 is an integrated structure and comprises a cutter bar part 21 and a clamping part 22, wherein the clamping part 22 comprises an upper chuck 221 and a lower chuck 222 which are connected with the cutter bar part 21, a containing cavity for a cutting blade 1 is formed between the upper chuck 221 and the lower chuck 222, and the cutting blade 1 is fixed in the containing cavity;

a cutting insert 1 provided with a pair of cutting portions opposed to each other, the cutting portions including a rake surface 11, a minor relief surface 12, a side rake surface 13, and a side relief surface 14, the rake surface 11 and the minor relief surface 12 intersecting to form a minor cutting edge 15, the minor cutting edge 15 being horizontally disposed;

as shown in fig. 7, in order to avoid the transitional contact with the surface of the workpiece during the processing of the side rake surface 13, the abrasion is reduced, and at the same time, the interference between the side flank surface 14 and the workpiece during the processing is avoided; the cutting insert 1 is inclined downwards along a horizontal plane and forms an angle beta with the horizontal plane, which angle beta is 4 deg. -6 deg., i.e. the angle between the minor cutting edge 15 and the horizontal plane is 4 deg. -6 deg..

It should be noted that:

in the utility model, aiming at the forming processing of the end face groove of the workpiece, as shown in fig. 8, when the cutting blade 1 is installed along the horizontal plane, the angle beta is 0 DEG, and the lower end of the side rear cutter face 14 is interfered with the workpiece;

as shown in fig. 9, when the cutting insert 1 is inclined downward along the horizontal plane, the side rake face 13 coincides with the vertical face at this time when the cutting insert 1 is severely worn out, when the angle β is 7 °.

Here, the deflection angle of the cutting insert 1 is reasonably set:

when the angle beta is 4-6 degrees, the side rake face 13 and the side flank face 14 do not influence the processing of the workpiece at the moment, and a certain safety distance is reserved;

when the angle beta is 5 degrees, the safety distance kept by the side rake face 13 and the side flank face 14 is the most reasonable, so that the safety of the cutting insert 1 during machining is ensured, and the cutting efficiency of the cutting insert 1 is improved.

To facilitate the installation of the cutting insert 1 and the guarantee of the deflection angle, the lower end surface of the upper jaw 221 and the upper end surface of the lower jaw 222 are inclined downward by 5 ° along the horizontal plane.

On the basis of the above embodiment, a clearance groove is further formed between the upper chuck 221 and the lower chuck 222, the clearance groove is formed at the rear end of the accommodating cavity, the width of the clearance groove is 1.5mm, and the clearance groove is formed to enable the upper chuck 221 to be opened upwards, so that the opening of the accommodating cavity is enlarged, and the cutting blade 1 is convenient to clamp.

On the basis of the above embodiment, the upper clamping head 221 and the lower clamping head 222 are respectively provided with a threaded hole corresponding to each other, and the threaded holes are internally matched with mounting screws to compress the upper clamping head 221 and the lower clamping head 222, so that the clamping firmness of the cutting blade 1 is improved.

On the basis of the above embodiment, the front ends of the upper chuck 221 and the lower chuck 222 are configured as arc surfaces along the workpiece cutting feeding direction, so that the supporting surfaces of the cutting edge of the cutting insert 1 adjacent to the cutter bar 2 are effectively avoided.

On the basis of the above embodiment, the cutting insert 1 is 4mm wide and is of the type GKD40.

To sum up: according to the utility model, double-sided chamfer can be processed through one-time clamping, so that the efficiency is high; the blade is uniformly stressed and has long service life; and stepped holes with different depths can be processed through one cutter handle.

The basic principle, main features and advantages of the present utility model are shown and described above, and the front, back, left and right are not specific, mainly for more intuitively explaining the technical solution, but not limiting. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical concept and features of the present utility model, and the present utility model can be implemented by those skilled in the art without limiting the scope of the utility model, therefore, all equivalent changes or modifications that are made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims (6)

1. An improved face slot milling cutter, which is characterized in that: comprises a cutting insert (1), a tool holder (2) carrying the cutting insert (1);

the cutter bar (2) is of an integrated structure and comprises a cutter bar part (21) and a clamping part (22), wherein the clamping part (22) comprises an upper chuck (221) and a lower chuck (222) which are connected with the cutter bar part (21), a containing cavity for a cutting blade (1) is formed between the upper chuck (221) and the lower chuck (222), and the cutting blade (1) is fixed in the containing cavity;

a cutting insert (1) provided with a pair of cutting portions facing each other, the cutting portions including a rake surface (11), a minor relief surface (12), a side rake surface (13), a side relief surface (14), the rake surface (11) and the minor relief surface (12) meeting to form a minor cutting edge (15), the minor cutting edge (15) being horizontally disposed;

the cutting blade (1) is inclined downwards along a horizontal plane, and the included angle between the auxiliary cutting edge (15) and the horizontal plane is 4-6 degrees.

2. The improved face slot milling cutter of claim 1, wherein: the included angle between the secondary cutting edge (15) and the horizontal plane is 5 degrees.

3. The improved face slot milling cutter of claim 1, wherein: a clearance groove is further formed between the upper clamping head (221) and the lower clamping head (222), the clearance groove is formed in the rear end of the accommodating cavity, and the width of the clearance groove is 1.5mm.

4. The improved face slot milling cutter of claim 1, wherein: screw holes corresponding to each other are formed in the upper clamping head (221) and the lower clamping head (222), and screws are installed in the screw holes in a matched mode.

5. The improved face slot milling cutter of claim 1, wherein: the front ends of the upper chuck (221) and the lower chuck (222) are arranged to be arc surfaces along the cutting and feeding direction of the workpiece.

6. The improved face slot milling cutter of claim 1, wherein: the cutting insert (1) is 4mm wide and has the model GKD40.