CN214443356U - Tool bit structure of CR milling cutter - Google Patents
Tool bit structure of CR milling cutter Download PDFInfo
- Publication number
- CN214443356U CN214443356U CN202120657832.6U CN202120657832U CN214443356U CN 214443356 U CN214443356 U CN 214443356U CN 202120657832 U CN202120657832 U CN 202120657832U CN 214443356 U CN214443356 U CN 214443356U
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- inclined plane
- cutter
- milling cutter
- locking bolt
- cutting
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- 238000003801 milling Methods 0.000 title claims abstract description 35
- 238000005520 cutting process Methods 0.000 claims abstract description 42
- 230000005389 magnetism Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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Abstract
The utility model relates to a milling cutter field, concretely relates to CR milling cutter's tool bit structure, including tool point portion and cutting part, tool point portion sets up in the upper end of cutting part, be provided with the chip groove that links to each other with tool point portion in the cutting part, the position that tool point portion and cutting part are connected is provided with the first inclined plane and the second inclined plane that incline opposite direction is connected, be provided with third inclined plane and fourth inclined plane between first inclined plane and the second inclined plane, third inclined plane and first inclined plane are in the coplanar, fourth inclined plane and second inclined plane are in the coplanar, the crossing department in third inclined plane and fourth inclined plane is the chisel edge, the third inclined plane borders on the second inclined plane through first side knife face, the fourth inclined plane borders on first inclined plane through the second side knife face. Through setting up first inclined plane and second inclined plane, form an overhead position at the middle part of tool point portion, when the piece of production fell to the tank bottom, can discharge tool point portion through this overhead position of tool point portion, avoid the bottom to accumulate the problem that the piece leads to the cutter skew easily.
Description
Technical Field
The utility model relates to a milling cutter field, concretely relates to CR milling cutter's tool bit structure.
Background
A milling cutter is a rotating tool with one or more cutter teeth for milling. When in work, each cutter tooth cuts off the allowance of the workpiece in sequence and intermittently. The milling cutter is mainly used for processing planes, steps, grooves, forming surfaces and cutting on a milling machine.
For example, publication No. CN205437292U discloses a cemented carbide milling cutter, which includes a cylindrical shank portion and a blade portion, the shank portion is provided with a first positioning hole having an opening at one end along an axis, and a side wall of the shank portion is provided with an invagination positioning portion.
The utility model discloses a through set up first locating hole and invagination location portion as milling cutter's locating part in handle of a knife portion to can select the locate mode according to the site conditions, the suitability that milling cutter was fixed a position can be improved to two kinds of modes of selecting the location, makes it can both carry out effectual location in most occasions.
However, under the condition that the milling process is increasingly refined at present, the requirement on the milling cutter is higher, for example, the cutter head of the milling cutter and the traditional milling cutter are mostly arranged in a plane, so that when the grooving process is carried out, the chips at the bottom of the cutter head are inconvenient to discharge when the cutter is fed, the chips accumulated at the bottom are easy to cause cutter deviation, once the cutter is deviated when the cutter is fed, the product is slightly cracked, and the cutter is seriously cracked, so that the product is damaged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a CR milling cutter's tool bit structure, the tool bit of solving traditional milling cutter is the plane setting mostly, is not convenient for discharge the piece of tool bit bottom in the in-process that the cutter fed man-hour, and makes the problem that leads to the cutter skew easily.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a CR milling cutter's tool bit structure, including tool nose portion and cutting portion, tool nose portion sets up in the upper end of cutting portion, be provided with the chip groove that links to each other with tool nose portion in the cutting portion, the position that tool nose portion and cutting portion are connected is provided with first inclined plane and second inclined plane opposite in direction of slope, be provided with third inclined plane and fourth inclined plane between first inclined plane and the second inclined plane, third inclined plane and first inclined plane are in the coplanar, fourth inclined plane and second inclined plane are in the coplanar, the crossing department of third inclined plane and fourth inclined plane is the chisel edge, the third inclined plane adjoins the second inclined plane through first flank face, the fourth inclined plane adjoins first inclined plane through second flank face, first inclined plane and second inclined plane all form contained angle A with the horizontal plane.
The further technical scheme is that the intersection of the first flank face and the second inclined face is a first longitudinal edge, and the intersection of the second flank face and the first inclined face is a second longitudinal edge.
According to a further technical scheme, the included angle A is set to be 20 degrees.
A further solution is that the width of the chisel edge is set to 13% of the cutting portion diameter.
The cutting tool comprises a cutting part, a shank part, a first cylindrical part, a circular table part and a second cylindrical part, wherein the lower end of the cutting part is connected with the shank part, the shank part comprises the first cylindrical part, the circular table part and the second cylindrical part, the upper end of the first cylindrical part is connected with the cutting part, the lower end of the first cylindrical part is connected with the upper end of the circular table part, the lower end of the circular table part is connected with the second cylindrical part, the diameter of the upper end of the circular table part is the same as that of the first cylindrical part, the diameter of the lower end of the circular table part is the same as that of the second cylindrical part, and the diameter of the first cylindrical part is the same as that of the cutting part.
The further technical scheme is that a positioning ring is sleeved on the second cylindrical part.
The second cylindrical part is provided with a first thread part, and the inner side of the positioning ring is provided with a second thread part meshed with the first thread part.
Further technical scheme is, vertical a plurality of constant head tanks that are provided with on the first screw portion, be provided with the locking groove on the inner wall of holding ring, the outer wall of holding ring is provided with the screw hole that is linked together with the constant head tank, the interlock of screw hole internal thread has locking bolt, locking bolt's one end is provided with the groove of revolving soon that is used for revolving soon locking bolt, the locking groove is worn into to the other end, and be connected with spacing in the locking groove, spacing is located in the constant head tank for locking bolt's opposite side card, locking bolt is serving with continuous with spacing and is provided with and is used for adsorbing strong magnetic part together locking bolt and spacing.
Compared with the prior art, the beneficial effects of the utility model are that: through set up first inclined plane and the second inclined plane that the direction of inclination is opposite at the point of a knife edge portion, when the point of a knife edge portion laminates grooved tank bottom on the product like this, the top on first inclined plane and second inclined plane will live the point of a knife edge portion support, form an overhead position at the middle part of point of a knife edge portion, when high-speed rotation under the milling machine drives, when the tank bottom is dropped to the piece of production, on the one hand can discharge the point of a knife edge portion through this overhead position of point of a knife edge portion, avoid the bottom to save the problem that the piece leads to the cutter skew easily, on the other hand can discharge the point of a knife edge portion through the chip groove that links to each other with the point of a knife edge portion on the cutting portion.
Drawings
Fig. 1 is a front view of a tool bit structure of a CR milling cutter according to the present invention.
Fig. 2 is a schematic view of the cutting edge portion of the present invention.
Fig. 3 is another schematic view of the cutting tip portion of the present invention.
Fig. 4 is a top view of the cutting edge portion of the present invention.
Fig. 5 is a schematic view of a tool shank of the present invention.
Fig. 6 is a schematic view of the first thread part of the present invention.
Fig. 7 is a schematic view illustrating the connection between the positioning ring and the first threaded portion according to the present invention.
Icon: 1-a nose portion, 101-a first bevel, 102-a second bevel, 103-a third bevel, 104-a fourth bevel, 105-a chisel edge, 106-a first flank face, 107-a second flank face, 108-a first longitudinal edge, 109-a second longitudinal edge, 2-a cutting portion, 201-a chip groove, 3-a shank portion, 301-a first cylindrical portion, 302-a dome portion, 303-a second cylindrical portion, 304-a first threaded portion, 305-a retaining ring, 306-a retaining groove, 307-a locking groove, 308-a threaded hole, 309-a locking bolt, 310-a retaining strip, 311-a strong magnetic portion.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example (b):
fig. 1 to 7 show an embodiment of the present invention.
Fig. 1 to 4 show a tool bit structure of a CR milling cutter, which includes a cutting edge portion 1 and a cutting portion 2, the cutting edge portion 1 is disposed at an upper end of the cutting portion 2, a chip discharge groove 201 connected with the cutting edge portion 1 is disposed on the cutting portion 2, a first inclined surface 101 and a second inclined surface 102 having opposite inclination directions are disposed at a position where the cutting edge portion 1 is connected with the cutting portion 2, a third inclined surface 103 and a fourth inclined surface 104 are disposed between the first inclined surface 101 and the second inclined surface 102, the third inclined surface 103 and the first inclined surface 101 are located on the same plane, the fourth inclined surface 104 and the second inclined surface 102 are located on the same plane, a chisel edge 105 is disposed at an intersection of the third inclined surface 103 and the fourth inclined surface 104, the third inclined surface 103 adjoins the second inclined surface 102 through a first flank surface 106, the fourth inclined surface 104 adjoins the first inclined surface 101 through a second flank surface 107, and both the first inclined surface 101 and the second inclined surface 102 form an included angle a with a horizontal plane. Through set up first inclined plane 101 and second inclined plane 102 that the direction of inclination is opposite at tool point portion 1, like this when tool point portion 1 is laminated on the product grooved tank bottom, the top of first inclined plane 10 and second inclined plane 102 will be lived tool point portion 1 support, form an overhead position in the middle part of tool point portion 1, when the milling machine drives high-speed rotation down, when the produced piece drops the tank bottom, on the one hand can discharge tool point portion 1 through this overhead position of tool point portion 1, avoid the bottom to accumulate the problem that the piece leads to the cutter skew easily, on the other hand can discharge tool point portion 1 through the chip groove 201 that links to each other with tool point portion 1 on cutting portion 2.
The intersection of the first flank surface 106 and the second chamfer 102 is a first longitudinal edge 108, and the intersection of the second flank surface 107 and the first chamfer 101 is a second longitudinal edge 109. In this embodiment, the orientation of the first longitudinal edge 108 and the second longitudinal edge 109, which are both cutting edges, is the reverse direction of the screwing direction in the machining process of the tool nose portion 1, so that the bottom of the product groove can be leveled to a certain extent through reverse rotation when the tool nose portion 1 retracts.
The angle of the included angle a is set to 20 °. The angle of included angle A is too big, and the sword point portion collapses easily, and the angle of included angle A sets up the undersize, is unfavorable for playing the effect of chip removal.
The width of the chisel edge 105 is set to 13% of the diameter of the cutting portion 2. The width of the chisel edge 105 is set too large, and the first inclined surface 101 and the second inclined surface 102 of the nose portion are too weak, which easily breaks the tool bit. The width of the chisel edge 105 is set too small to facilitate the debris channeling and cushioning in the middle.
A shank portion 3 is connected to a lower end of the cutting portion 2 shown in fig. 5, the shank portion 3 includes a first cylindrical portion 301, a circular table portion 302, and a second cylindrical portion 303, an upper end of the first cylindrical portion 301 is connected to the cutting portion 2, a lower end is connected to an upper end of the circular table portion 302, a lower end of the circular table portion 302 is connected to the second cylindrical portion 303, a diameter of an upper end of the circular table portion 302 is the same as a diameter of the first cylindrical portion 301, a diameter of a lower end of the circular table portion 302 is the same as a diameter of the second cylindrical portion 303, and a diameter of the first cylindrical portion 301 is the same as a diameter of the cutting portion 2. Through setting up second cylinder portion 303, can be convenient for the milling machine pass through anchor clamps and grasp second cylinder portion 303, the diameter that sets up second cylinder portion 303 simultaneously is greater than first cylinder portion 301, can make second cylinder portion 303 possess bigger diameter like this, can be more firm like this in handle of a knife portion 3, the milling machine of being convenient for simultaneously passes through anchor clamps and grasps.
A positioning ring 305 is fitted over the second cylindrical portion 303. The provision of the retaining ring 305 facilitates the securing of the tool shank portion 3 in place by the retaining ring 315 when the tool shank portion 3 is secured to a milling machine. The second cylindrical portion 303 shown in fig. 6 is provided with a first threaded portion 304, and the inner side of the positioning ring 305 is provided with a second threaded portion engaging with the first thread. By providing the first threaded portion 304 and the second threaded portion, the stability of the connection between the second cylindrical portion 303 and the positioning ring 305 is improved.
A plurality of positioning grooves 306 are vertically arranged on the first thread part 304 shown in fig. 7, a locking groove 307 is arranged on the inner wall of the positioning ring 305, a threaded hole 308 communicated with the positioning grooves 306 is arranged on the outer wall of the positioning ring 305, a locking bolt 309 is meshed with the internal thread of the threaded hole 308, a screwing groove used for screwing the locking bolt 309 is arranged at one end of the locking bolt 309, the other end of the locking bolt penetrates into the locking groove 307, a limiting strip 310 is connected in the locking groove 307, the limiting strip 310 is clamped in the positioning grooves 306 relative to the other side of the locking bolt 309, and a strong magnetic part 311 used for adsorbing the locking bolt 309 and the limiting strip 310 together is arranged at one end of the locking bolt 309 connected with the limiting strip 310. With such an arrangement, when the position of the positioning ring 305 on the second cylindrical portion 303 needs to be adjusted, one end of the screw groove of the locking bolt 309 is moved towards the outer wall of the positioning ring 305 by a tool adapted to the screw groove from the outside, the strong magnetic portion 311 can absorb the stopper 310 from the positioning groove 306, and at this time, the positioning ring 305 can be moved up and down on the second cylindrical portion 303 by screwing the positioning ring 305, so as to adjust the position. After the adjustment is finished, the locking bolt 309 pushes the limiting strip 310 to move towards the positioning groove 306 in the locking groove 307 by reversely screwing the screw groove, and finally the limiting strip 310 is connected with the positioning groove 306 in a buckling manner. When the stop strip 310 is snapped into engagement with the detent 306, the retaining ring 305 cannot be screwed.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (8)
1. The cutter head structure of the CR milling cutter is characterized by comprising a cutter point part (1) and a cutting part (2), wherein the cutter point part (1) is arranged at the upper end of the cutting part (2), a chip discharge groove (201) connected with the cutter point part (1) is formed in the cutting part (2), a first inclined plane (101) and a second inclined plane (102) which are opposite in inclination direction are arranged at the position where the cutter point part (1) is connected with the cutting part (2), a third inclined plane (103) and a fourth inclined plane (104) are arranged between the first inclined plane (101) and the second inclined plane (102), the third inclined plane (103) and the first inclined plane (101) are positioned on the same plane, the fourth inclined plane (104) and the second inclined plane (102) are positioned on the same plane, the intersection of the third inclined plane (103) and the fourth inclined plane (104) is a cross edge (105), and the third inclined plane (103) is abutted to the second inclined plane (102) through a first side cutter face (106), the fourth inclined surface (104) is adjacent to the first inclined surface (101) through a second side tool surface (107), and the first inclined surface (101) and the second inclined surface (102) form an included angle A with the horizontal plane.
2. A cutter head structure for a CR milling cutter according to claim 1, wherein: the intersection of the first flank surface (106) and the second inclined surface (102) is a first longitudinal edge (108), and the intersection of the second flank surface (107) and the first inclined surface (101) is a second longitudinal edge (109).
3. A cutter head structure for a CR milling cutter according to claim 1, wherein: the angle of the included angle a is set to 20 °.
4. A cutter head structure for a CR milling cutter according to claim 1, wherein: the width of the chisel edge (105) is set to 13% of the diameter of the cutting part (2).
5. A cutter head structure for a CR milling cutter according to claim 1, wherein: the lower end of the cutting part (2) is connected with a cutter handle part (3), the cutter handle part (3) comprises a first cylindrical part (301), a circular table part (302) and a second cylindrical part (303), the upper end of the first cylindrical part (301) is connected with the cutting part (2), the lower end of the first cylindrical part is connected with the upper end of the circular table part (302), the lower end of the circular table part (302) is connected with the second cylindrical part (303), the diameter of the upper end of the circular table part (302) is the same as that of the first cylindrical part (301), the diameter of the lower end of the circular table part (302) is the same as that of the second cylindrical part (303), and the diameter of the first cylindrical part (301) is the same as that of the cutting part (2).
6. A cutter head structure for a CR milling cutter as set forth in claim 5, wherein: and a positioning ring (305) is sleeved on the second cylindrical part (303).
7. A cutter head structure for a CR milling cutter according to claim 6, wherein: a first thread part (304) is arranged on the second cylindrical part (303), and a second thread part meshed with the first thread is arranged on the inner side of the positioning ring (305).
8. A cutter head structure for a CR milling cutter according to claim 7, wherein: the utility model discloses a locking bolt, including first screw thread portion (304), the internal wall of holding ring (305) is provided with locking groove (307), the outer wall of holding ring (305) is provided with screw hole (308) that are linked together with holding groove (306), screw hole (308) internal thread interlock has locking bolt (309), the one end of locking bolt (309) is provided with the groove of revolving soon that is used for revolving locking bolt (309), and the other end pierces into locking groove (307) to there is spacing strip (310) in locking groove (307) in the connection, spacing strip (310) are located in holding groove (306) for the opposite side card of locking bolt (309), locking bolt (309) is provided with on the one end that links to each other with spacing strip (310) and is used for adsorbing strong magnetism portion (311) together locking bolt (309) and spacing strip (310).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120657832.6U CN214443356U (en) | 2021-03-31 | 2021-03-31 | Tool bit structure of CR milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120657832.6U CN214443356U (en) | 2021-03-31 | 2021-03-31 | Tool bit structure of CR milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214443356U true CN214443356U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120657832.6U Active CN214443356U (en) | 2021-03-31 | 2021-03-31 | Tool bit structure of CR milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214443356U (en) |
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2021
- 2021-03-31 CN CN202120657832.6U patent/CN214443356U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Cutting head structure of a CR milling cutter Effective date of registration: 20221011 Granted publication date: 20211022 Pledgee: Sichuan Shehong Rural Commercial Bank Co.,Ltd. Hedong Sub branch Pledgor: Sichuan Anhe Changsheng Technology Co.,Ltd. Registration number: Y2022980018021 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231023 Granted publication date: 20211022 Pledgee: Sichuan Shehong Rural Commercial Bank Co.,Ltd. Hedong Sub branch Pledgor: Sichuan Anhe Changsheng Technology Co.,Ltd. Registration number: Y2022980018021 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Cutting Head Structure of CR Milling Cutter Effective date of registration: 20231031 Granted publication date: 20211022 Pledgee: Sichuan Shehong Rural Commercial Bank Co.,Ltd. Hedong Sub branch Pledgor: Sichuan Anhe Changsheng Technology Co.,Ltd. Registration number: Y2023980063494 |