CN203171046U

CN203171046U - Combined milling cutter

Info

Publication number: CN203171046U
Application number: CN 201220719610
Authority: CN
Inventors: 王毅
Original assignee: ACCESS PRECISION TOOLS (SUZHOU) Co Ltd
Current assignee: ACCESS PRECISION TOOLS (SUZHOU) Co Ltd
Priority date: 2012-12-24
Filing date: 2012-12-24
Publication date: 2013-09-04
Anticipated expiration: 2022-12-24

Abstract

The utility model relates to a combined milling cutter. The combined milling cutter is characterized by comprising a cutter rod and a milling cutter body mounted in the cutter rod, wherein a sleeving hole is formed in the head of the cutter rod; a screw hole is formed in the side wall of the head of the cutter rod; the screw hole is communicated with the sleeving hole; the milling cutter body consists of a connecting section and a milling cutter head which are integrated; steps are formed at the connection position of the connecting section and the milling cutter head; the outer wall of the connecting section is cut to form a plane; the connecting section is inserted into the sleeving hole; the plane is vertical to the central line of the screw hole; an arc is formed at the position of the steps; and one CBN layer is welded at the periphery of a cutting edge of the milling cutter head. The combined milling cutter is used for machining deep holes; a 45-degree inclined surface is formed at the first step position of the cutter rod, so that chamfering of the step position of a step hole is facilitated; the combined milling cutter additionally has a milling cutter function, can finish machining of milling holes, double step holes and step chamfering at one step and is simple and convenient to operate; combined connection is adopted, so the combined milling cutter is convenient to replace and maintain.

Description

The combined type milling cutter

Technical field:

The utility model relates to the cutter in a kind of machining, relates in particular to a kind of combined type milling cutter.

Background technology:

Milling cutter is for Milling Process, have the rotary cutter of one or more cutters tooth.Each cutter tooth cuts the surplus of workpiece successively off and on during work.Milling cutter is mainly used in processing plane, hole milling, step, groove, profiled surface and cut-out workpiece etc. on milling machine.

At present, because the paces of mechanization degree development are very fast, requirement on machining accuracy to the hole in being applied to machining is higher, particularly to the processing of deep hole, because regular turning tool can't arrive requirement on machining accuracy, just used milling cutter, but common milling cutter is when the practical operation deep hole, be according to actual conditions, produce one the milling cutter of length-specific according to the degree of depth in hole, when operation, milling cutter connects electric machine main shaft, under the situation of high-speed rotation, because cutter body is longer, when running into the higher workpiece of mechanical hardness, be easy to produce and collapse the cutter phenomenon, enlarged the cost input.

Summary of the invention:

It is one for collection hole milling, double step hole and to step place chamfer machining that the technical problem that the utility model solves provides a kind of, avoids producing and collapses the cutter phenomenon, improves its service life, the combined type milling cutter that reduces cost and drop into.

The technical scheme in the invention for solving the technical problem is: a kind of combined type milling cutter, comprise knife bar and be installed in the interior cutter body of knife bar, head at described knife bar offers sleeve joint hole, head side wall at this knife bar offers screw hole, this screw hole is communicated with sleeve joint hole, described cutter body is by linkage section and milling head is integrated forms, junction at described linkage section and milling head forms ladder, outer wall smear metal one plane at this linkage section, described linkage section is plugged in the sleeve joint hole, and this plane is vertical with center line 90 degree of screw hole.

Further, in order to reduce in the milling head course of work, the internal stress that the ladder place that milling head and linkage section join produces, the place offers circular arc at described ladder, and the radius of this circular arc is 0.35mm～0.5mm.

Further, the radius of described circular arc is 0.45mm.

Further, in order to mill out stepped hole, the front end of described knife bar is three sections faces that radius increases progressively, and forms first ladder and second ladder between the adjacent segment face, and the outer wall from the head of milling head to first ladder is welded with one deck CBN (cubic boron nitride) layer.

Further, for the step place to stepped hole carries out chamfered, inwardly offer 45 ° inclined-plane at the described first ladder place.

The beneficial effect of this device: the cutter that this device is used for hole milling, double step hole and the step place is carried out chamfered, inwardly offer 45 ° inclined-plane at the first ladder place of knife bar, be convenient to the step place in double step hole is carried out chamfering, this device has increased the function of milling cutter, the disposable processing of finishing hole milling, double step hole and step place chamfering, easy and simple to handle, adopt knockdown connection simultaneously, be convenient to change, keep in repair.

Description of drawings:

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the schematic diagram of knife bar in the utility model;

Fig. 3 is that knife rod head is to the upward view at the first ladder place;

Fig. 4 is the enlarged diagram at A place among Fig. 2;

Fig. 5 is the schematic diagram of cutter body in the utility model;

Fig. 6 is the vertical view of Fig. 5;

Fig. 7 is the head schematic diagram of milling head.

Among the figure: 1, knife bar 11, sleeve joint hole 12, screw hole 13, first ladder 131, inclined-plane 14, second ladder 2, cutter body 21, linkage section 211, plane 22, milling head 23, ladder 3, CBN layer.

The specific embodiment:

A kind of combined type milling cutter as shown in Figure 1, comprise knife bar 1 and be installed in the interior cutter body 2 of knife bar, head at described knife bar 1 offers sleeve joint hole 11, head side wall at this knife bar offers screw hole 12, this screw hole 12 is communicated with sleeve joint hole 11, described cutter body 2 is by

linkage section

21 and 22 integrated compositions of milling head, junction at described linkage section and milling head forms ladder 23, outer wall smear metal one plane 211 at this linkage section 21, described linkage section 21 is plugged in the sleeve joint hole 11, and this plane 211 is vertical with center line 90 degree of screw hole 12.

Further, shown in Fig. 5～7, in order to reduce in the milling head course of work, the internal stress that the ladder place that milling head and linkage section join produces, 23 places offer circular arc R at described ladder, and the radius of this circular arc R is 0.35mm～0.5mm.

Further, the radius of described circular arc R is 0.45mm.

Further, shown in Fig. 2～4, in order to mill out stepped hole, the front end of described knife bar 1 is three sections faces that radius increases progressively, form first ladder 13 and second ladder 14 between the adjacent segment face, the outer wall from the head of milling head to first ladder is welded with one deck CBN layer 3.

Further, for the step place to stepped hole carries out chamfered, inwardly offer 45 ° inclined-plane 131 at described first ladder 13 places.

The linkage section 21 of cutter body 2 is inserted in the sleeve joint hole 11, offered a layer plane 211 on the perisporium of this linkage section 21, this plane 211 and screw hole 12 vertical contrapositions, utilize screw cutter body 2 to be fixed on the head of knife bar, the front end of screw withstands plane 211, knife bar 1 is fixed on the main shaft of machinery, utilizes milling head 22 to carry out hole milling, simultaneously, utilize the CBN layer 3 of welding on first ladder 13 to carry out stepped hole processing.When finishing stepped hole processing, utilize the step on the 131 pairs of stepped holes in inclined-plane at 45 ° at first ladder, 13 places to carry out chamfered.

The cutter that this device is used for hole milling, double step hole and the step place is carried out chamfered, inwardly offer 45 ° inclined-plane at the first ladder place of knife bar, be convenient to the step place in double step hole is carried out chamfering, this device has increased the function of milling cutter, the disposable processing of finishing hole milling, double step hole and step place chamfering, easy and simple to handle, adopt knockdown connection simultaneously, be convenient to change, keep in repair.

It is emphasized that, it more than is preferable implementation column of the present utility model, be not that the utility model is done any type of restriction in appearance, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment does.

Claims

1. combined type milling cutter, it is characterized in that: comprise knife bar (1) and be installed in the interior cutter body (2) of knife bar, head at described knife bar (1) offers sleeve joint hole (11), head side wall at this knife bar offers screw hole (12), this screw hole (12) is communicated with sleeve joint hole (11), described cutter body (2) is by linkage section (21) and milling head (22) integrated composition, junction at described linkage section and milling head forms ladder (23), outer wall smear metal one plane (211) at this linkage section (21), described linkage section (21) is plugged in the sleeve joint hole (11), and this plane (211) are vertical with center line 90 degree of screw hole (12).

2. combined type milling cutter according to claim 1, it is characterized in that: locate to offer circular arc (R) at described ladder (23), the radius of this circular arc (R) is 0.35mm～0.5mm.

3. combined type milling cutter according to claim 2, it is characterized in that: the radius of described circular arc (R) is 0.45mm.

4. combined type milling cutter according to claim 1, it is characterized in that: the front end of described knife bar (1) is three sections faces that radius increases progressively, form first ladder (13) and second ladder (14) between the adjacent segment face, the outer wall from the head of milling head to first ladder is welded with one deck CBN layer (3).

5. combined type milling cutter according to claim 4 is characterized in that: locate inwardly to offer 45 ° inclined-plane (131) at described first ladder (13).