CN221249213U

CN221249213U - Pre-milling cutter with smooth chip removal

Info

Publication number: CN221249213U
Application number: CN202322464517.3U
Authority: CN
Inventors: 钟洪祥; 林嫱; 梁启庆; 石锁柱; 谢文宏
Original assignee: Wuzhou Sanhetian Baili Hardware Processing Co ltd
Current assignee: Wuzhou Sanhetian Baili Hardware Processing Co ltd
Priority date: 2023-09-11
Filing date: 2023-09-11
Publication date: 2024-07-02
Anticipated expiration: 2033-09-11

Abstract

The utility model discloses a pre-milling cutter with smooth chip removal, belongs to the field of plate processing cutters, and solves the problem that the chip removal of the existing pre-milling cutter is not smooth enough. The cutter comprises a cutter body, wherein a plurality of groups of cutting parts are arranged on the cutter body, chip grooves are formed in the cutter body on one side of each group of cutting parts, the inner wall surface of each chip groove is of a horn-shaped structure extending from the bottom to the top in an inclined manner, and the inclination of the inner wall of one side of the chip groove far away from the cutting part is smaller than that of the inner wall of one side of the chip groove near the cutting part. The pre-milling cutter can reduce chip removal resistance, so that the circulation of scraps is smoother, and the chip removal performance is further improved.

Description

Pre-milling cutter with smooth chip removal

Technical Field

The utility model relates to a plate processing cutter, in particular to a pre-milling cutter with smooth chip removal.

Background

In the processing process of the plate, as burrs and unevenness often exist at the edge of the plate formed by preliminary cutting, the pre-milling is generally carried out before entering into the edge sealing, so that the side surface is in a flat and flat state, and the pre-milling cutter is a cutter commonly used in the pre-milling process. The existing pre-milling cutter is as follows: the integral diamond pre-milling cutter of ZL202223112550.1 has the advantages that in the milling process, when the upper layer material of the wood board is milled, the long diamond blade and the short diamond blade with the upper ring are milled simultaneously, and the number of the involved diamond blades is large, so that the milling quality of the upper layer of the wood board is ensured; when the lower layer material of the wood board is milled, the long diamond blade and the short diamond blade with the lower ring are milled simultaneously, and the number of the involved diamond blades is large, so that the milling quality of the lower layer of the wood board is ensured.

In the existing pre-milling cutter, the cylindrical surface of the cylindrical body is provided with the silencing groove II and the silencing groove I which are communicated with each other, namely, the chip groove is formed in one side of the blade, so that noise can be reduced, and chip can be removed. However, the cross section of the silencing groove (chip groove) of the existing pre-milling cutter is a section of arc-shaped cross section, scraps generated by cutting fall into the chip groove and are discharged outwards along the radial direction of the wall surface of the arc-shaped cross section, so that certain resistance is brought to the scraps, the chip removal smoothness is further influenced, and the chip removal performance of the milling cutter is required to be improved. Therefore, a pre-milling cutter with smooth chip removal is provided.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model provides the pre-milling cutter with smooth chip removal, which can reduce chip removal resistance, enable the circulation of waste chips to be smoother and further improve chip removal performance.

The technical scheme of the utility model is as follows: the utility model provides a smooth pre-milling cutter of chip removal, includes the cutter body, the cutter body on be equipped with multiunit cutting portion, every group all seted up the chip groove on the cutter body of cutting portion one side, the internal face of chip groove is the loudspeaker form structure that extends from its bottom to the top slope, just the slope of one side inner wall that the chip groove kept away from cutting portion is less than the slope of one side inner wall that is close to cutting portion, the chip groove includes first arcwall face, inclined plane and the second arcwall face that sets gradually along the cutting direction, the one end of first arcwall face links to each other and tangent with the cutting face of cutting portion, the both ends of inclined plane link to each other and tangent with the one end of the other end of first arcwall face, the one end of second arcwall face respectively, the other end of second arcwall face links to each other and tangent with the external wall face of cutter body, the centre of a circle that the first arcwall face corresponds is located the outside of cutter body, the centre of a circle that the second arcwall face corresponds is located the inboard of cutter body.

Further, the cutting parts of the plurality of groups are distributed in an upper layer and a lower layer, and the knife edges of the cutting parts of the upper layer and the lower layer face opposite directions and face the axial middle part of the knife body.

Further, the cutting part comprises a tooth holder and a cutting edge, wherein the tooth holder is fixedly connected with the cutter body, and the cutting edge is fixed on the tooth holder close to one side of the chip groove.

Further, the outer wall surface of toothholder includes third arcwall face, fourth arcwall face, fifth arcwall face and sixth arcwall face, third arcwall face, fourth arcwall face, fifth arcwall face and sixth arcwall face link to each other in proper order and tangent, third arcwall face still tangent with the outer wall surface of cutter body, the centre of a circle that the third arcwall face corresponds is located the outside of cutter body, the centre of a circle that the fourth arcwall face, fifth arcwall face and sixth arcwall face correspond is located the inboard of cutter body.

Further, the front angle alpha of the cutting edge is 0-60 degrees, the rear angle beta is 0-60 degrees, and the shearing angle mu is 0-90 degrees.

Further, the chip groove has a long waist-shaped cross section in depth.

Further, the chip groove has a trapezoid-shaped cross section in depth.

Advantageous effects

Compared with the prior art, the utility model has the following advantages:

1. According to the pre-milling cutter, the chip groove is of the horn-shaped structure, so that the length and width of the top of the chip groove are larger than the length and width of the bottom of the chip groove, the chip groove is facilitated to discharge waste chips at the bottom of the chip groove, the inclination of the inner wall of one side of the chip groove far away from the cutting part is smaller than that of the inner wall of one side of the chip groove close to the cutting part, the waste chips cut by the cutting part are splashed to the side wall surface of the chip groove with smaller inclination, chip removal resistance can be reduced, the waste chips can circulate more smoothly, chip removal performance is further improved, and impact noise between the waste chips and the side wall of the chip groove can be reduced.

2. According to the pre-milling cutter, the outer wall surface of the tooth holder is designed to be a streamline arc surface, so that the conventional linear tooth holder is changed, the wood chips can circulate more smoothly, the chip removal effect is further improved, and the service life of the cutter is prolonged.

Drawings

Fig. 1 is a schematic perspective view of embodiment 1 of the present utility model;

Fig. 2 is a schematic front view of embodiment 1 of the present utility model;

FIG. 3 is a schematic top view of embodiment 1 of the present utility model;

FIG. 4 is an enlarged schematic view showing a sectional structure of the junk slot in embodiment 1 of the present utility model;

Fig. 5 is a schematic perspective view of embodiment 2 of the present utility model;

fig. 6 is a schematic perspective view of embodiment 3 of the present utility model;

Fig. 7 is a schematic perspective view of embodiment 4 of the present utility model;

fig. 8 is a schematic perspective view of embodiment 5 of the present utility model;

Fig. 9 is a schematic perspective view of embodiment 6 of the present utility model.

Wherein: 1-cutter body, 2-cutting portion, 3-junk slot, 4-sound absorbing slot, 5-arch, 6-draw-in groove, 7-bolt hole, 8-cylindrical hole, 9-keyway, 21-tooth holder, 22-cutting edge, 31-first arcwall face, 32-inclined plane, 33-second arcwall face, 211-third arcwall face, 212-fourth arcwall face, 213-fifth arcwall face, 214-sixth arcwall face.

Detailed Description

The utility model will be further described with reference to specific embodiments in the drawings.

Example 1

Referring to fig. 1-4, the pre-milling cutter with smooth chip removal comprises a cutter body 1, wherein the cutter body 1 is cylindrical, a plurality of groups of cutting parts 2 are arranged on the cutter body 1, the plurality of groups of cutting parts 2 are uniformly distributed along the outer wall of the cutter body 1, chip removal grooves 3 are formed in the cutter body 1 on one side of each group of cutting parts 2, the inner wall surface of each chip removal groove 3 is of a horn-shaped structure which extends from the bottom to the top obliquely, namely, the length and width of the top of the chip removal groove 3 are larger than the length and width of the bottom, and the inclination of the inner wall of one side of the chip removal groove 3 away from the cutting part 2 is smaller than the inclination of the inner wall of one side of the chip removal groove 3 close to the cutting part 2. Specifically, the chip groove 3 includes a first arc surface 31, an inclined surface 32 and a second arc surface 33 which are sequentially arranged along the cutting direction, one end of the first arc surface 31 is connected with and tangent to the cutting surface of the cutting part 2, two ends of the inclined surface 32 are respectively connected with and tangent to the other end of the first arc surface 31 and one end of the second arc surface 33, the other end of the second arc surface 33 is connected with and tangent to the outer wall surface of the cutter body 1, the circle center corresponding to the first arc surface 31 is located at the outer side of the cutter body 1, and the circle center corresponding to the second arc surface 33 is located at the inner side of the cutter body 1.

The pre-milling cutter of this embodiment is through setting up chip groove 3 into the horn-shaped structure for the length and width at chip groove 3 top is greater than the length and width of bottom, helps chip groove 3 bottom's sweeps to discharge like this, and the inclination that chip groove 3 kept away from one side inner wall of cutting portion 2 is less than the inclination that is close to one side inner wall of cutting portion 2, and chip that cutting portion 2 cut off splashes to a chip groove 3 lateral wall face that the inclination is less, can reduce chip removal resistance for the sweeps circulation is more smooth, further improves chip removal performance, also can reduce the impact noise of chip and chip groove 3 lateral wall.

Preferably, the cutting parts 2 are distributed in an upper layer and a lower layer, the knife edges of the upper layer and the lower layer of the cutting parts 2 face opposite directions and face the axial middle part of the cutter body 1, so that the cutting effect is effectively ensured. Further, the cutting portion 2 includes a tooth holder 21 and a cutting edge 22, the tooth holder 21 is fixedly connected with the cutter body 1, specifically, the tooth holder 21 and the cutter body 1 are in an integrally formed structure, the cutting edge 22 is fixed on the tooth holder 21 near one side of the chip groove 3, specifically, the cutting edge 22 is fixed on the tooth holder 21 by welding, and one end of the first arc-shaped surface 31 is connected with and tangent to a cutting surface of the cutting edge 22. Further, the outer wall surface of the tooth holder 21 is an arc surface, and comprises a third arc surface 211, a fourth arc surface 212, a fifth arc surface 213 and a sixth arc surface 214, wherein the third arc surface 211, the fourth arc surface 212, the fifth arc surface 213 and the sixth arc surface 214 are sequentially connected and tangent, the third arc surface 211 is also tangent to the outer wall surface of the cutter body 1, the center of the circle corresponding to the third arc surface 211 is located at the outer side of the cutter body 1, and the centers of the circles corresponding to the fourth arc surface 212, the fifth arc surface 213 and the sixth arc surface 214 are located at the inner side of the cutter body 1. When part sweeps strike on the toothholder 21, can derive to the cutter body 1 outside by third arcwall face 211, fourth arcwall face 212, fifth arcwall face 213 and sixth arcwall face 214 in proper order, reduce the resistance of sweeps for the sweeps circulation is more smooth and easy, reduces the impact force of sweeps to the toothholder 21 simultaneously, and then prolongs the life-span of toothholder, reduces the noise that processing produced. Further, the cutting edges 22 each have a rake angle α of 0 to 60 °, a relief angle β of 0 to 60 °, and a shearing angle μ of 0 to 90 °, which can ensure the cutting effect.

According to the pre-milling cutter of the embodiment, the outer wall surface of the tooth holder 21 is designed to be a streamline arc surface, and the conventional linear tooth holder 21 is changed, so that wood chips can circulate more smoothly, the chip removal effect is further improved, and the service life of a cutter is prolonged.

Preferably, a cylindrical hole 8 is formed in the center of the cutter body 1, and at least one key slot 9 is formed in the inner wall of the cylindrical hole 8. Through the cooperation of cylindrical hole 8 and keyway 9, make things convenient for cutter body 1 and arbor or other power shaft to be connected.

Preferably, the chip groove 3 in this embodiment has a long waist-shaped cross section in depth.

Example 2

Referring to fig. 5, in another embodiment of the present utility model, the present embodiment is substantially the same as embodiment 1, except that the chip groove 3 in the depth direction has a trapezoid structure, that is, the length of the inner wall of the chip groove 3 on the side far from the cutting portion 2 is longer than the length of the inner wall of the chip groove on the side near the cutting portion 2, and the longer side wall of the chip groove is more conducive to chip removal.

Example 3

Referring to fig. 6, in another embodiment of the present utility model, the embodiment is substantially the same as embodiment 1, and the difference is that in this embodiment, a plurality of sound absorbing grooves 4 are provided on the outer wall of the cutter body 1, the plurality of sound absorbing grooves 4 are distributed equidistantly along the axial direction of the cutter body 1, and each sound absorbing groove 4 is disposed annularly along the outer wall surface of the cutter body 1.

In the pre-milling cutter in the embodiment, the plurality of sound absorbing grooves 4 are formed in the outer wall of the cutter body 1, so that noise generated in the processing process can be further reduced, and the use requirement of the pre-milling cutter rotating at a high speed is met.

Example 4

Referring to fig. 7, in another embodiment of the present utility model, the embodiment is substantially the same as embodiment 2, and is different in that in this embodiment, a plurality of sound-absorbing grooves 4 are provided on the outer wall of the cutter body 1, the plurality of sound-absorbing grooves 4 are distributed equidistantly along the axial direction of the cutter body 1, and each sound-absorbing groove 4 is disposed annularly along the outer wall surface of the cutter body 1.

Example 5

Referring to fig. 8, in another embodiment of the present utility model, the embodiment is basically the same as embodiment 3, and is different in that in this embodiment, a plurality of protrusions 5 are disposed on two sides of the cutter body 1, a clamping groove 6 is disposed between two adjacent protrusions 5, the protrusions 5 are matched with the clamping groove 6, that is, the size of the protrusions 5 is the same as that of the clamping groove 6, the protrusions 5 can be just inserted into the clamping groove 6, so as to realize the superposition and assembly of the two, a plurality of bolt holes 7 are further disposed on the cutter body 1, and after the plurality of cutters are superimposed and assembled, the plurality of cutters are fastened through bolts passing through the bolt holes 7, so as to realize the fixed connection of the plurality of cutters.

Preferably, the draw-in groove 6 is to the inside sunken setting of cutter body 1, and draw-in groove 6 is absorbed in cutter body 1, can increase the degree of depth of draw-in groove 6 for cutter after the stack when using, circumference power can be shared to cutter body 1 in, and not only rely on protruding 5, can effectively improve the structural strength of cutter after the stack, increase of service life.

Preferably, the position of the protrusion 5 on one side of the cutter body 1 corresponds to the position of the clamping groove 6 on the other side of the cutter body 1, namely, the protrusion 5 on one side of the cutter body 1 is arranged in a staggered manner with the clamping groove 6 on the other side of the cutter body 1, so that the thickness of the cutter body 1 can be ensured, the layout of the cutting part 2 and the chip removal groove 3 is facilitated, and meanwhile, the structural strength of the cutter can be improved.

Preferably, the bulge 5, the clamping groove 6 and the bolt hole 7 are all positioned at the edge of the cutter body 1, and the superposition structure is arranged at the edge of the cutter body 1, so that the structural strength of the cutter can be effectively improved, and the service life of the cutter is prolonged.

According to the pre-milling cutter, the clamping grooves and the protrusions which are matched with each other are formed in the two sides of the cutter body, when the pre-milling cutter is used, the protrusions of the two pre-milling cutters can be inserted into the clamping grooves to be used in a superposition mode, the cutters can be used in a superposition mode according to the thickness of the plate, trouble in cutter changing is reduced, the pre-milling cutter is very convenient to use, multiple cutters with different thicknesses are not required to be arranged, and the manufacturing cost of the cutters is effectively reduced.

Example 6

Referring to fig. 9, in another specific embodiment of the present utility model, the present embodiment is basically the same as embodiment 4, and is different in that in this embodiment, a plurality of protrusions 5 are disposed on two sides of the cutter body 1, a clamping groove 6 is disposed between two adjacent protrusions 5, the protrusions 5 are adapted to the clamping groove 6, that is, the size of the protrusions 5 is the same as that of the clamping groove 6, the protrusions 5 can be just inserted into the clamping groove 6, so as to realize the superposition and assembly of the two, a plurality of bolt holes 7 are further disposed on the cutter body 1, and after the superposition and assembly of a plurality of cutters, the plurality of cutters are fastened through the bolt holes 7 by bolts, so as to realize the fixed connection of the plurality of cutters.

While only the preferred embodiments of the present utility model have been described above, it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these do not affect the effect of the implementation of the present utility model and the utility of the patent.

Claims

1. The utility model provides a smooth pre-milling cutter of chip removal, includes cutter body (1), cutter body (1) on be equipped with multiunit cutting portion (2), every group all seted up chip groove (3) on cutter body (1) of cutting portion (2) one side, its characterized in that, the internal face of chip groove (3) is the loudspeaker form structure that extends from its bottom to the top slope, just the slope of one side inner wall that chip groove (3) kept away from cutting portion (2) is less than the slope of one side inner wall that is close to cutting portion (2), chip groove (3) include first arcwall face (31), inclined plane (32) and second arcwall face (33) that set gradually along the cutting direction, the one end of first arcwall face (31) links to each other and tangent with the cutting face of cutting portion (2), the both ends of inclined plane (32) link to each other and tangent with the one end of first arcwall face (31) respectively, the other end of second arcwall face (33) and be close to the outer wall face of one side inner wall face of cutter body (1), the corresponding arcwall face (31) is located the centre of a circle of a knife (1) of a knife body (1) that corresponds.

2. The pre-milling cutter with smooth chip removal according to claim 1, wherein a plurality of groups of the cutting parts (2) are distributed in an upper layer and a lower layer, and the cutting edges of the upper layer and the lower layer of the cutting parts (2) face opposite directions and face the axial middle part of the cutter body (1).

3. The pre-milling cutter with smooth chip removal according to claim 2, wherein the cutting part (2) comprises a tooth holder (21) and a cutting edge (22), the tooth holder (21) is fixedly connected with the cutter body (1), and the cutting edge (22) is fixed on the tooth holder (21) close to one side of the chip removal groove (3).

4. A pre-milling cutter with smooth chip removal according to claim 3, wherein the outer wall surface of the tooth holder (21) comprises a third arc surface (211), a fourth arc surface (212), a fifth arc surface (213) and a sixth arc surface (214), the third arc surface (211), the fourth arc surface (212), the fifth arc surface (213) and the sixth arc surface (214) are sequentially connected and tangent, the third arc surface (211) is also tangent to the outer wall surface of the cutter body (1), the center of the circle corresponding to the third arc surface (211) is located at the outer side of the cutter body (1), and the centers of the circles corresponding to the fourth arc surface (212), the fifth arc surface (213) and the sixth arc surface (214) are located at the inner side of the cutter body (1).

5. A smooth chip-removing pre-milling cutter according to claim 3, characterized in that the cutting edges (22) have a rake angle α of 0-60 ° and a relief angle β of 0-60 ° and a shearing angle μ of 0-90 °.

6. A smooth chip removal pre-milling cutter according to any one of claims 1-5, characterized in that the chip grooves (3) have a deep cross-section in the form of a long waist.

7. A smooth chip removal pre-milling cutter according to any one of claims 1-5, characterized in that the chip grooves (3) have a trapezoid-like structure in cross-section in depth.