CN201151006Y - Improved milling cutter - Google Patents

Abstract

An improved milling cutter comprising: a body, a blade assembly is formed at one end of the columnar body, the blade assembly is provided with a dead point by taking the center of one end of the body as a reference, blades are uniformly distributed in the forward direction by taking the dead point as the center, blades extend outwards from the dead point to the periphery of the body, a first relief surface is inclined from one side of each blade, and a second relief surface is inclined from the side of the first relief surface; the method is characterized in that: the body is inclined with a negative front angle surface with a large angle design at the other side of the first relief surface and the second relief surface; the main body is provided with a concave chip escaping part corresponding to each blade part on the side body. The utility model provides promote sword angle life makes milling cutter can stably process in view of the above, effectively expands milling cutter's processing application scope, can not make the sword angle produce the problem of disintegrating, cracked, and can not make the serious situation such as concentrated piece, bounce-back and injure the work object man-hour adding.

Description

Improved milling cutter

technical field

The utility model relates to a milling cutter, in particular to an improved milling cutter with a blade formed at one end of the milling cutter, which cuts workpieces with the blade.

Background technique

As shown in Figure 1, the milling cutter 10 made of the existing high-priced alloy is mainly provided with a columnar body 101, and one end of the body 101 is formed with a blade assembly 102, and the blade assembly 102 is based on the center of the end of the body 101, A static point 103 is provided by the reference (please also refer to FIG. 2). Then, with the static point 103 as the center, there is a cutting edge 104, and the cutting edge 104 spirally extends from the static point 103 to the periphery of the body 101 and downwards to form a cutting edge 105, and then a chip flute is inclined from the cutting edge 105 side. 106; the cutting edge 105 is inclined to have a first clearance surface 107 on the other side of the chip flute 106, and a second clearance surface 108 is inclined on the first clearance surface 107 side; the second clearance surface 108 is on the other side There is an inclined clearance surface 109 (as shown in FIG. 3 ) that transfers the chip flute 106 . The cutting edge 105 and the chip flute 106 form a sharp corner 1051 (as shown in FIG. 4 ) with stress concentration problems.

Please refer to FIG. 3 again, the static point 103 is generated by the chip flutes 106 in a very close manner, and since they cannot intersect, it is easy to form a static point 103 with different sizes and poor average values.

The milling cutter 10 is being implemented, as shown in FIG. 5 . It mainly uses the rotating milling cutter 10 to press a work object a at a static point 103, and then uses the blade portion 104 to cut off the contact part of the work object a. ; Here, if when the static point 103 has the situation that the size is different and the average value is not good, it is easy to rub the work object a with the static point 103, so that the work object a produces scratches, and also brings friction to the static point 103 itself Streaks and wear, and become one of the main causes of vibration when the milling cutter 10 is used for machining.

Please refer to Fig. 6 and Fig. 7, the debris produced by the cutting of the working object a through the cutting edge 104 is concentrated in the chip pocket 106, and then the rotating milling cutter 10 is combined with the accumulation of debris to form a thrust to dislodge the debris. The machining position of the work object a is pushed out along the chip flute 106, so that the work object a forms a preset shape. But this blade portion 104 is to adopt the blade portion 104 of this sharp shape to cut off the contact portion of the work object a when cutting off the work object a, and the debris during its removal is then concentrated in the chip pocket 106, (as shown in Figure 7 ) is easy to form the cutting reverse resistance of the edge angle 1051, which will damage the fluency of processing, and may cause vibration, resulting in poor processing average and insufficient precision, and the edge angle 1051 may be due to reverse resistance and force on the tip , and disintegrate and fragment the edge 1051, so that the milling cutter 10 is damaged and scrapped.

In addition, the debris produced by cutting the working object a through the blade portion 104 may rebound in the chip pocket 106 and scratch the working object a, so it will damage the processing surface of the milling cutter 10 and the manufacturing accuracy of the processing surface; in summary Said, the self making of this milling cutter 10 and in the processing process, there is following shortcoming:

1. For the static point 103, it is easy to have different sizes and poor average values.

2. The edge 1051 in processing has the problem of easy disintegration and fragmentation.

In summary, the milling cutter 10 has serious phenomena such as damage, damage, and injury to the work object a. In order to avoid these shortcomings, it is only conceived to design the milling cutter 10 separately, and strengthen its edge angle 1051 as a milling cutter. 10 Necessary targets for improvement.

Utility model content

The main technical problem to be solved by the utility model is to overcome the above-mentioned defects in the prior art, and provide an improved milling cutter, which improves the service life of the edge angle, thereby enabling the milling cutter to process stably and effectively expanding the processing of the milling cutter The scope of application will not cause disintegration and fragmentation of the edge edge, and will not cause serious situations such as concentrated debris, rebound and damage to the work object during processing.

The technical scheme that the utility model solves its technical problem adopts is:

An improved milling cutter, comprising: a body, a blade assembly is formed at one end of the cylindrical body, the blade assembly is provided with a static point based on the center of the end of the body, and is centered on the static point along the The blade portion is evenly divided, and the blade portion extends from the static point to the periphery of the body with a blade, and then a first clearance surface is inclined from one side of the blade, and a second clearance surface is inclined on the side of the first clearance surface; It is characterized in that: the body has a negative rake surface with a large angle design inclined on the other side of the first clearance surface and the second clearance surface; and the body has a recessed chip escape part corresponding to each cutting edge along the side body.

The improved milling cutter of the foregoing, wherein the negative rake face remains interfaced with a second relief face.

In the aforementioned improved milling cutter, a recessed clearance surface is added at the junction of the negative rake surface and the second clearance surface.

In the aforementioned improved milling cutter, the cutting edge is arc-shaped and extends toward the periphery of the body and extends to the chip escape portion.

In the aforementioned improved milling cutter, the cutting edge, the negative rake surface, the first relief surface and the second relief surface are arc-shaped and extend to the chip escape portion.

In the aforementioned improved milling cutter, the cutting edge, the negative rake surface, the first relief surface and the second relief surface extend to the chip escape portion in a clockwise arc shape.

The aforementioned improved milling cutter, wherein the cutting edge is inclined in the counterclockwise direction to have a negative rake surface, and the cutting edge is inclined in the clockwise direction to have a first relief surface and a second relief surface, and the cutting edge, the negative rake surface, the second The first clearance surface and the second clearance surface extend to the chip escape part in a spiral shape.

The beneficial effect of the utility model is that the service life of the blade angle is improved, thereby enabling the milling cutter to process stably, effectively expanding the processing scope of the milling cutter, and preventing the blade angle from disintegrating and fragmenting, and It will not cause serious situations such as concentrated debris, rebound and injury to the work object.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a front view of the prior art.

Figure 2 is a side view of the prior art.

Fig. 3 is a bottom view of the prior art.

Fig. 4 is a partially enlarged sectional view of a blade in the prior art.

Fig. 5 is a schematic diagram of front view processing in the prior art.

Fig. 6 is a schematic diagram of side view processing in the prior art.

Fig. 7 is a partially enlarged cross-sectional view of a prior art blade during machining.

Fig. 8 is a front view of the utility model.

Fig. 9 is a side view of the utility model.

Fig. 10 is a schematic bottom view of the utility model.

Fig. 11 is a partially enlarged cross-sectional view of the blade of the present invention.

Fig. 12 is a schematic diagram of front view processing of the utility model.

Fig. 13 is a side view processing schematic diagram of the utility model.

Fig. 14 is a partially enlarged cross-sectional view of the blade of the present invention during processing.

Explanation of symbols in the figure:

(current technology)

a...work object

10....Milling cutter 101....Body

102....Blade assembly 103....Static point

104....Blade 105....Blade

1051....Cutting edge 106....Chip flute

107...the first clearance surface 108...the second clearance surface

109....Gap surface

(this utility model)

a...work object

1..Milling cutter 11....Body

12..Blade assembly 13..Static point

14....Blade 141....Blade

2....First clearance surface 21...Second clearance surface

3..Negative rake surface 4....Chip escape

5..Blade angle 6....Gap surface

Detailed ways

Referring to Fig. 8 to shown in Fig. 11, [is the front view, side view, bottom view, enlarged sectional view of blade part of the present utility model]; refers to a kind of improved milling cutter, wherein, the milling cutter that this high-priced alloy makes 1 contains:

As shown in Figure 8, a body 11, the end of the cylindrical body 11 is formed with a blade assembly 12, the blade assembly 12 is provided with a non-contact static point 13 based on the center of the end of the body 11, and The non-contact static point 13 is centered with a blade portion 14 that is evenly divided in the direction, and the blade portion 14 extends from the static point 13 to the periphery of the body 11 to form a blade 141, and then a first clearance surface 2 is inclined from the blade 141 side. There is also a second relief surface 21 inclined on the side of the first relief surface 2; wherein: the main body 11 is inclined on the other side of the first relief surface 2 and the second relief surface 21, and has a negative rake surface 3 with a large-angle design ; And the body 11 has a recessed chip escape portion 4 (as shown in FIG. 9 ) extending along the body 11 corresponding to each blade portion 14 .

Please refer to Fig. 10 and Fig. 11, the slightly circular negative rake surface 3 and the first relief surface 2 and the second relief surface 21 form a large-angle design (no groove design) edge angle 5; and the edge Part 14, the first relief surface 2 and the second relief surface 21 will be formed on the side of the milling cutter 1 in a spiral form (circular arc shape adopts clockwise or counterclockwise rotation) according to the edge angle 5, and are formed together The spiral shape can be concentrated on one end of the side of the milling cutter 1. The spiral shape can be extended to the chip escape part 4 to facilitate the removal of debris, and the chip escape part 4 remains connected with the negative rake surface 3 and the second clearance surface to achieve a composite form of joint surface, and at the joint surface The gap surface 6 can be recessed at the junction of the blades, so that the negative rake surface 3 and the helical cutting edge 14 designed to match the large angle (mountain shape) can achieve a comprehensively strengthened edge angle 5.

The milling cutter 1 is being implemented, as shown in Fig. 12 to Fig. 14. It mainly uses the rotating milling cutter 1 to press a work object a at the static point 13, and then utilizes the blade portion 14 to press the work object a. The contact part is cut off.

The debris produced by the cutting of the working object a by the cutting edge 14 is led out from the negative rake surface 3 to the clearance surface 6 and the chip escape portion 4 at about 30°, so there is no debris during the processing. The situation of accumulation and rebound; (please refer to Figure 13 and Figure 14) and the rotating milling cutter 1 is equipped with a negative rake surface 3 with a large angle (mountain shape) design, and a spiral cutting edge 14 and edge angle 5 ( As shown in Figure 14), the edge angle 5 can be effectively and comprehensively strengthened, and when the milling cutter 1 is processed with a large angle edge angle 5, the axial component force of the stable reference is greater than the radial component force of the vertical reference. Directional processing of the work object a does not generate vibration, but can improve the processing surface accuracy and smoothness of the work object a.

The purpose of this utility model is to use a non-contact static point 13 as the center to be equipped with a cutting edge 14 in the forward direction. The cutting edge 14 is equipped with a large-angle edge angle 5, and the edge angle 5 is spirally rotated to the side of the milling cutter 1. The edge angle 5 is effectively and comprehensively strengthened, so that the milling cutter 1 made of high-priced alloy can effectively reduce the breakage, and the service life of the milling cutter 1 can be greatly improved, and the existing stress concentration problem can be completely avoided. This is a main advantage of the milling cutter 1 .

In addition, the main body 11 of the present utility model has a recessed chip escape part 4 corresponding to each blade part 14 on the side body, so that the chips generated by the work object a through the blade part 14 will pass through the gap surface 6 and the chip escape part 4 at about 30° The working object a is derived along the trend, so there is no shortcoming of debris accumulation and rebound during the processing implementation, and the processing stability of the milling cutter 1 is improved, which is another advantage of the present invention.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model, All still belong to within the scope of the technical solution of the utility model.

Claims (7)

1. An improved milling cutter, comprising: A body, one end of the cylindrical body is formed with a blade assembly, the blade assembly is provided with a static point based on the center of one end of the body, and a blade is equally distributed along the center of the static point, and the blade There is a blade extending from the static point to the periphery of the body, and then there is a first clearance surface inclined from one side of the blade, and a second clearance surface is inclined on the side of the first clearance surface; it is characterized in that: the body is on the first The other side of the relief surface and the second relief surface are inclined to have a negative rake surface with a large angle design; and there is a recessed chip escape part on the side of the main body corresponding to each cutting edge. 2. The improved milling cutter of claim 1 wherein said negative rake face remains interfaced with a second relief face. 3. The improved milling cutter according to claim 2, characterized in that a recessed clearance surface is added at the junction of the negative rake surface and the second clearance surface. 4. The improved milling cutter according to claim 1, 2 or 3, characterized in that the cutting edge is arc-shaped and extends toward the periphery of the body and extends to the chip escape portion. 5. The improved milling cutter according to claim 1, 2 or 3, characterized in that the cutting edge, the negative rake surface, the first relief surface and the second relief surface are arc-shaped and extend to the chip escape part . 6. The improved milling cutter according to claim 1, 2 or 3, characterized in that the cutting edge, the negative rake surface, the first relief surface and the second relief surface extend to Chip escape department. 7. The improved milling cutter according to claim 1, 2 or 3, characterized in that the cutting edge is inclined in the counterclockwise direction with a negative rake surface, and the cutting edge is inclined in the clockwise direction with a first relief surface and The second clearance surface, and the cutting edge, the negative rake surface, the first clearance surface and the second clearance surface extend to the chip escape part in a spiral shape.

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