CN212469938U

CN212469938U - Wheel groove milling cutter for processing stainless steel parts

Info

Publication number: CN212469938U
Application number: CN202021077022.5U
Authority: CN
Inventors: 张波
Original assignee: CHANGZHOU CHUANGWEI TOOL MANUFACTURING CO LTD
Current assignee: CHANGZHOU CHUANGWEI TOOL MANUFACTURING CO LTD
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-02-05
Anticipated expiration: 2030-06-12

Abstract

The utility model discloses a race milling cutter for processing stainless steel part, including a stalk portion, one connect in the transition step of stalk portion one end and with the cutting part that the transition step other end is connected, the cutting part is the taper structure, the stalk portion has a the central axis, the cutting part side has three spiral helicine cutting edge, adjacent two be formed with between the cutting edge and be spiral helicine chip groove, the chip groove cross-section is circular-arcly. The cutting edge of the wheel groove milling cutter is set to be a spiral chip removal groove and a spiral chip removal groove, the radial force and the axial force of the cutter are processed simultaneously based on the spiral increasing mode, all cutting forces are prevented from being concentrated on the radial direction with the weakest rigidity, the cutter is not prone to vibration, meanwhile, the cutting edge of the spiral cutting cutter is discharged in the direction perpendicular to the cutting edge, and the chip removal performance is improved.

Description

Wheel groove milling cutter for processing stainless steel parts

Technical Field

The utility model relates to a milling cutter technical field, more specifically says, it relates to a race milling cutter for processing stainless steel part.

Background

The race milling is a time-consuming production process in the machining process of a steam turbine rotor all the time, and the traditional race milling cutter used in the past adopts common high-speed steel and a common geometric structure, so that the production efficiency is low, the service life of a cutter is short, and the machining cost is high.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a race milling cutter for processing stainless steel part, it has the characteristics that improve machining efficiency, increase cutter life and be convenient for the chip removal.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a race milling cutter for processing stainless steel part, including a stalk portion, one connect in the transition step of stalk portion one end and with the cutting part that the transition step other end is connected, the cutting part is the taper structure, the stalk portion has a the central axis, the cutting part side has three and is spiral helicine cutting edge, adjacent two be formed with between the cutting edge and be spiral helicine chip groove, the chip groove cross-section is circular-arcly.

By adopting the technical scheme, the cutting edge of the traditional race milling cutter is arranged along the outline of the height direction of the conical cutting edge, the cutting edge of the race milling cutter is arranged into the spiral chip removal grooves and the spiral chip removal grooves, based on the spiral mode, the radial force and the axial force of the cutter are processed simultaneously, the situation that all cutting forces are concentrated on the radial direction with the weakest rigidity and the cutter is difficult to vibrate is avoided, meanwhile, the cutting edge of the spiral cutting cutter is discharged along the direction vertical to the cutting edge, and the chip removal performance is improved.

Further, set up the cross-section on the stalk portion lateral wall and be square and be on a parallel with the first radiating groove of the central axis, the radiating groove runs through the stalk portion both ends, the transition step set up with the second radiating groove of first radiating groove intercommunication, the second radiating groove with the chip groove intercommunication.

Through adopting above-mentioned technical scheme, set up first radiating groove on the stalk portion, set up the second radiating groove on the transition step to with first radiating groove, second radiating groove and chip groove intercommunication, make in the cutting process, there are more heat dissipation channels, when using the coolant liquid, the coolant liquid can get into the processing region through first radiating groove, second radiating groove and chip groove better, improves the radiating effect.

Further, every the cutting edge is followed the cutting part axial direction has three thread ladder, and is three the external diameter of thread ladder is from being close to stalk portion one end is to keeping away from stalk portion one end decreases progressively in proper order.

Through adopting above-mentioned technical scheme, through the setting of spiral shell tooth ladder for can improve the intensity of cutting edge, can also guarantee simultaneously that the cutting edge has sufficient effective width, effectively prolong the life of cutter.

Further, the helix angle of the cutting edge is 25 °.

Through adopting above-mentioned technical scheme, reach improvement processing effect through increasing spiral angle.

Further, the milling cutter is made of cemented carbide.

Further, the handle portion, the blade portion and the transition step are integrally formed.

To sum up, the utility model discloses following beneficial effect has:

1. the spiral cutting edge is arranged, and the chip removal groove is arranged in a spiral shape, so that the chip removal performance is improved, and the effect of tool vibration is avoided;

2. through setting up first radiating groove, second radiating groove and chip groove intercommunication, play the radiating effect of improvement.

Drawings

Fig. 1 is a schematic structural diagram of a race milling cutter for machining stainless steel parts according to an embodiment of the present invention;

fig. 2 is a schematic partial sectional view of a groove milling cutter machining workpiece for machining stainless steel parts according to an embodiment of the present invention.

In the figure: 1. a handle; 11. a first heat sink; 2. a transition step; 21. a second heat sink; 3. a blade part; 31. a cutting edge; 311. a step of screw teeth; 32. a chip groove.

Detailed Description

Example (b):

the present invention will be described in further detail with reference to the accompanying fig. 1-2.

A wheel groove milling cutter for processing stainless steel parts is disclosed, as shown in figure 1-2, comprising a handle part 1, a transition step 2 connected with one end of the handle part 1 and an edge part 3 connected with the other end of the transition step 2, wherein the edge part 3 is of a taper structure, the transition step 2 is connected with the larger end of the edge part 3 in diameter, the handle part 1 is provided with a central axis, the diameter of the transition step 2 is larger than that of the handle part 1, the handle part 1 and the transition step 2 are both cylindrical, the handle part 1, the edge part 3 and the transition step 2 are integrally formed, the side surface of the edge part 3 is provided with three spiral cutting edges 31, a spiral chip removal groove 32 is formed between every two adjacent cutting edges 31, and the section of. The cutting edge 31 of the traditional wheel groove milling cutter is arranged along the height direction outline of the conical edge part 3, the cutting edge 31 of the wheel groove milling cutter is arranged into a spiral chip removal groove 32, based on the mode of increasing the spiral, the radial force and the axial force of the cutter are processed simultaneously, all cutting forces are prevented from being concentrated on the radial direction with the weakest rigidity, the cutter is not easy to vibrate, meanwhile, the cutting of the spiral cutter is discharged along the direction vertical to the cutting edge 31, and the chip removal performance is improved.

Set up on the lateral wall of stalk portion 1 the cross-section for square and be on a parallel with the first radiating groove 11 of the central axis, the radiating groove runs through stalk portion 1 both ends, and transition step 2 sets up the second radiating groove 21 with first radiating groove 11 intercommunication, and second radiating groove 21 and chip groove 32 intercommunication. In this embodiment, the flow direction of the second heat dissipation groove 21 is U-shaped, a first long groove is sequentially formed in the upper end surface of the transition step 2 along the radial direction thereof, a second long groove parallel to the central axis is formed in the side surface of the transition step 2, a third long groove is formed in the lower end surface of the transition step 2 along the radial direction thereof, and the first long groove, the second long groove and the third long groove are communicated with each other to form the whole second heat dissipation groove 21.

The first heat dissipation groove 11 is formed in the handle portion 1, the second heat dissipation groove 21 is formed in the transition step 2, and the first heat dissipation groove 11, the second heat dissipation groove 21 and the chip removal groove 32 are communicated, so that in the cutting process, more heat dissipation channels are formed, and when the cooling liquid is used, the cooling liquid can better enter a processing area through the first heat dissipation groove 11, the second heat dissipation groove 21 and the chip removal groove 32, and the heat dissipation effect is improved.

Each cutting edge 31 has three thread steps 311 in the axial direction of the blade portion 3, and the outer diameters of the three thread steps 311 decrease in order from the end close to the shank portion 1 to the end away from the shank portion 1. Through the setting of thread ladder 311 for can improve the intensity of cutting edge 31, can also guarantee simultaneously that cutting edge 31 has sufficient effective width, effectively prolong the life of cutter.

By setting the helix angle of the cutting edge 31 to 25 °, an improved machining effect is achieved.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are only used for convenience of expression and should not be understood as limitations to the embodiments of the present invention, and the following embodiments do not describe any more.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a race milling cutter for processing stainless steel part, includes a stalk portion (1), one connect in transition step (2) of stalk portion (1) one end and with cutting part (3) that transition step (2) other end is connected, cutting part (3) are the taper structure, stalk portion (1) has a central axis, its characterized in that: the cutting part (3) side has three helical cutting edge (31), adjacent two be formed with between cutting edge (31) and be helical shape chip groove (32), chip groove (32) cross-section is circular-arc.

2. The wheel slot milling cutter for machining stainless steel parts according to claim 1, wherein: set up on stalk portion (1) lateral wall the cross-section be square and be on a parallel with first radiating groove (11) of the central axis, the radiating groove runs through stalk portion (1) both ends, transition step (2) seted up with second radiating groove (21) of first radiating groove (11) intercommunication, second radiating groove (21) with chip groove (32) intercommunication.

3. The wheel slot milling cutter for machining stainless steel parts according to claim 2, wherein: every cutting edge (31) is followed cutting part (3) axial direction all has three spiral shell tooth ladder (311), and is three the external diameter of spiral shell tooth ladder (311) is from being close to stalk portion (1) one end is to keeping away from stalk portion (1) one end diminishes in proper order.

4. The slot milling cutter for machining stainless steel parts according to claim 3, wherein: the helix angle of the cutting edge (31) is 25 °.

5. The wheel slot milling cutter for machining stainless steel parts according to claim 1, wherein: the milling cutter is made of cemented carbide.

6. The wheel slot milling cutter for machining stainless steel parts according to claim 1, wherein: the handle part (1), the blade part (3) and the transition step (2) are integrally formed.