CN210080818U

CN210080818U - Ball end mill

Info

Publication number: CN210080818U
Application number: CN201920546421.2U
Authority: CN
Inventors: 刘汉成
Original assignee: Shanghai Handi Mechanical Equipment Co Ltd
Current assignee: Shanghai Handi Mechanical Equipment Co Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-02-18
Anticipated expiration: 2029-04-19

Abstract

The utility model discloses a ball end mill, which relates to the field of cutting tools and comprises a cutter bar, wherein one end of the cutter bar is provided with a plurality of mounting grooves, the wall parallel to the cross section of the cutter bar shaft in each mounting groove is a mounting surface, one side of the mounting surface, which is far away from the cutter bar, is provided with an arc surface, and each arc surface forms a spherical arc surface; the mounting surface is provided with a blade, and the blade is provided with a fixing piece for detachably and fixedly connecting the blade and the cutter bar. The utility model provides a ball end mill convenient to use, the security is high, and stability is good, long service life and low in use cost.

Description

Ball end mill

Technical Field

The utility model relates to a cutting tool field, specific theory, it relates to a ball end mill.

Background

The ball end milling cutter is also called as R cutter, and the cutting edge of the R cutter is assembled on a milling machine like a ball end and is used for milling various curved surfaces and arc grooves.

The utility model discloses a current patent grant publication number is CN 203471018U's utility model discloses a ball head end milling cutter, including milling cutter handle, milling cutter handle and ball head knife tip, be equipped with on the milling cutter handle and mill cutting edge and mill sword groove. In actual use, a worker aligns the tip of the ball head to the position to be cut, the machine is started to carry out cutting operation, and during work, scraps are discharged along the milling cutter groove.

When the ball end mill is used, the loss of a ball end cutting edge is large, the ball end mill is easy to break, the whole ball end mill cannot be used after the ball end cutting edge is broken, the whole ball end mill needs to be replaced, the use cost is high, and a part to be improved exists.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model aims at providing a ball end mill utilizes the installation face that sets up on the tool bit and can dismantle the tool bit of setting on the installation face, and the staff can directly change the blade that collapses, continues to use ball end mill, reduces use cost.

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

a ball end mill comprises a cutter bar, wherein one end of the cutter bar is provided with a plurality of mounting grooves, the wall parallel to the cross section of a cutter bar shaft in each mounting groove is a mounting surface, one side, far away from the cutter bar, of each mounting surface is provided with an arc surface, and each arc surface forms a spherical arc surface; the mounting surface is provided with a blade, and the blade is provided with a fixing piece for detachably and fixedly connecting the blade and the cutter bar.

By adopting the technical scheme, the arc surface of the mounting surface is utilized to form a spherical arc surface, so that after the blades with the same shape as the mounting surface are mounted on the mounting surface, the spherical arc surface is formed among the blades, and the cutter head of the end mill is ensured to be spherical; when the blade is used, the blade is detachably arranged on the mounting surface through the fixing piece, and the damaged blade can be directly detached and replaced in the working process. By the mode, the use cost of the ball end mill is greatly reduced by directly replacing the damaged blade; secondly, guarantee bulb end mill's use convenience.

The utility model discloses further set up to: the limiting groove is formed in one side, away from the blade edge, of the cutter head, and the side, away from the blade edge, of the blade is embedded in the limiting groove.

Through adopting above-mentioned technical scheme, utilize the blade to deviate from one side of cutting edge and insert and form the cooperation of pegging graft in the restriction groove, when making bulb end mill use, help guaranteeing the stability of blade to improve bulb end mill's machining precision greatly.

The utility model discloses further set up to: the fixing piece is a fastening bolt, the fastening bolt penetrates through the blade, and the end part of the fastening bolt penetrates through the mounting surface and is in threaded connection with the mounting surface.

Through adopting above-mentioned technical scheme, set the mounting to fastening bolt, adopt simple fixed mode, the staff of being convenient for utilizes the direct blade with the damage of instrument to dismantle and install new blade, improves the convenience of bulb end mill in the use greatly.

The utility model discloses further set up to: one side of the blade, which deviates from the mounting surface, is matched with the mounting groove to form a chip groove.

By adopting the technical scheme, when the ball end mill is used, the scraps generated by cutting the ball end mill directly enter the chip groove, so that the phenomenon that the scraps are between the cutting edge and a cutting object to damage the cutting edge is avoided. By the mode, the service life of the ball end mill is greatly prolonged.

The utility model discloses further set up to: the gear rod is provided with a chip groove along the length direction, and the chip groove is communicated with the chip groove.

Through adopting above-mentioned technical scheme, utilize the chip groove and the chip groove intercommunication of drawing that set up to improve the collection capacity of sweeps, the staff reduces the time that frequently clears away the operation link cost of sweeps when using, improves work efficiency greatly.

The utility model discloses further set up to: the bottom of the chip groove is provided with a guide arc surface which is obliquely arranged from the connection part of the guide arc surface and the chip groove to the outer side direction of the cutter bar.

By adopting the technical scheme, the guide arc surface is arranged in the chip groove, so that the scraps entering the chip groove from the chip groove directly fly out along the guide arc surface, and in the using process, workers do not need to clean the scraps, thereby greatly improving the use convenience of the ball-end milling cutter.

The utility model discloses further set up to: the cutter bar comprises a cutter handle and a cutter head, wherein an insert column is arranged at one end of the cutter head close to the cutter handle, a clamping groove is formed at one end of the cutter handle close to the cutter head, and the insert column is embedded into the clamping groove; the inserted column is detachably and fixedly connected with the clamping groove through a bolt.

By adopting the technical scheme, the cutter head is inserted into the clamping groove on the cutter handle through the inserting column to form inserting matching and is fixed through the bolt, when products with different specifications are processed, a worker can directly replace different cutter heads, and the application range of the ball head cutter head is greatly expanded; secondly, set the tool bit to and can dismantle the setting, the staff can directly change the tool bit and guarantee bulb end mill's normal use, prolongs its life greatly.

The utility model discloses further set up to: the side wall of the peripheral side of the inserted column is provided with a fixed protrusion along the length direction of the side wall, and a sliding groove used for embedding the fixed protrusion is arranged in the clamping groove.

Through adopting above-mentioned technical scheme, utilize the fixed arch and the spout that set up, when using, help the relative rotation can not appear between tool bit and the handle of a knife, reduce the moment of torsion that the bolt bore in the use, prolong the life of bolt to extension bulb end mill's life.

The utility model discloses further set up to: one end of the cutter head close to the cutter handle is provided with a baffle ring for blocking flying scraps, and the baffle ring is arranged on the periphery of the cutter head.

Through adopting above-mentioned technical scheme, utilize the fender ring that sets up, block along the sweeps that the guide cambered surface flew out, reduce the sweeps and splash, improve bulb end mill's safety in utilization.

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

1. through the arranged mounting surface and the blades detachably arranged on the mounting surface, when the blades are damaged, the blades can be directly replaced, so that the use cost of the ball end mill is greatly reduced;

2. the chip groove and the chip guide groove communicated with the chip groove are utilized, so that the collection capacity of the waste chips of the ball-end milling cutter is improved when the ball-end milling cutter is used, and meanwhile, the guide arc surface is arranged in the chip guide groove, so that the waste chips are directly discharged through the guide arc surface, and the chip cleaning capacity of the ball-end milling cutter is further improved;

3. by means of the arrangement of the limiting groove, one end of the blade far away from the cutting edge is inserted and fixed in the limiting groove, and the position of the blade is further limited by the aid of the fastening bolt, so that stability of the blade in use is guaranteed, and the service life of the blade is prolonged.

Drawings

FIG. 1 is a schematic axial view of a ball end mill;

fig. 2 is an exploded view of a ball nose end mill.

Reference numerals: 1. a cutter bar; 101. a knife handle; 102. a cutter head; 2. mounting grooves; 21. a mounting surface; 3. an arc-shaped surface; 31. a spherical arc surface; 4. a blade; 5. a limiting groove; 6. a chip pocket; 61. a guide surface; 7. a chip guiding groove; 71. guiding the arc surface; 8. fastening a bolt; 9. inserting a column; 91. a fixed protrusion; 10. a card slot; 10.1, a chute; 11. and (4) a baffle ring.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1, a ball end mill includes a cutter bar 1, and the cutter bar 1 is cylindrical. Tool shank 1 comprises a tool tip 102 and a tool shank 101. The edge position of the peripheral side of one end of the cutter head 102, which is far away from the cutter handle 101, is provided with two mounting grooves 2, and the two mounting grooves 2 are uniformly arranged around the axis of the cutter head 102. The side wall parallel to the axial section of the cutter bar 1 in the mounting groove 2 is a mounting surface 21, one side of the mounting surface 21 far away from the cutter handle 101 is set to be an arc-shaped surface 3, and each arc-shaped surface on the mounting surface 21 forms a spherical arc surface 31 around the periphery of the cutter head 102. Each mounting surface 21 is provided with an insert 4, and the shape of the insert 4 is the same as that of the mounting surface 21, which helps to ensure that the cutting edge of the mounted insert 4 forms a spherical arc surface 31 on the periphery side of the cutting head 102. The blade 4 is detachably provided with a fixing member for fixedly connecting the blade 4 and the cutter head 102.

In actual use, a worker can directly remove the damaged blade 4 by detaching the fixing member and install a new blade 4. Thereby the bulb end mill continues to use, greatly reduced bulb end mill's use cost.

As shown in fig. 2, the fixing member is a fastening bolt 8, and the fastening bolt 8 is inserted through the blade 4 and is threadedly mounted on the mounting surface 21, which helps to ensure the stability of the blade 4 during use.

The side of the cutter head 102 far away from the cutting edge of the blade 4 is provided with a limiting groove 5, and the side of the blade 4 far away from the cutting edge is embedded in the limiting groove to form inserting fit. Thereby further restricting the movement of the blade 4 in the direction of the perpendicular line perpendicular to the mounting surface 21 and improving the stability of the blade 4 during use.

The side walls of the mounting surface 21 and the tool tip 102 adjacent to the mounting surface 21 form chip flutes 6, and the chip flutes 6 are arranged at the mounting surface 21 and the positions. When the ball end mill is used, the generated waste chips are directly stored in the chips, and the situation that the waste chips generated by cutting enter between the cutting edge and the chips and damage the cutting edge is avoided is facilitated. The inner side wall of the cutting head 102 adjacent to the mounting surface 21 is provided as a guide surface 61, and the guide surface 61 is in the shape of a circular arc, which facilitates the movement of the swarf entering the chip flute 6 along the guide surface 61.

With reference to fig. 2, a chip groove 7 is further formed in the tool bit 102, the chip groove 7 is formed in the tool bit 102 along the length direction of the tool shank 101, and one end, away from the tool shank 101, of the chip groove 7 is communicated with the chip groove 6. The scraps in the scrap groove 6 are led to enter the scrap guiding groove 7 through the guide of the guide surface 61, so that the scrap capacity is further improved, the service time of removing the scraps by workers is reduced, and the efficiency is improved.

A guide arc 71 is provided in the chip groove 7, and the guide arc 71 is provided at the bottom of the chip groove 7. The guide arc face 71 is arranged from the connection part with the chip groove 6 along the length direction of the tool shank 101 to the direction far away from the tool bit 102, so that waste chips are conveniently discharged along the guide arc face 71. Meanwhile, the guide arc surface 71 is obliquely arranged from the inner wall of the cutter head 102 to the direction away from the axis of the cutter head 102, so that the flying track of the waste chips is changed when the waste chips are discharged along the guide arc surface 71, and the splashing range of the waste chips is favorably reduced.

One end of the tool bit 102 close to the tool shank 101 is integrally provided with a baffle ring 11 for preventing scraps from splashing, and the baffle ring 11 is arranged along the circumferential direction of the tool bit 102. The scraps discharged along the scrap guiding groove 7 directly impact the baffle ring 11, so that the scraps are settled, and the use safety of the ball end mill is improved.

As shown in fig. 2, an insertion column 9 for connecting the tool shank 101 is integrally formed at one end of the tool bit 102 close to the tool shank 101, the insertion column 9 may be in a cylindrical shape, and the insertion column 9 is arranged along the length direction of the axis of the tool bit 102. One end of the tool shank 101 close to the tool bit 102 is provided with a clamping groove 10, and the clamping groove 10 is arranged along the length direction of the long axis of the tool shank 101. The plug-in posts 9 are inserted into the card slots 10 to form a plug-in fit. The cutter handle 101 penetrates through the outer side wall of the cutter handle 101 through a bolt and is in threaded connection with the inserting column 9, and the cutter head 102 and the cutter handle 101 are fixed.

The periphery of the plug post 9 is also integrally formed with a fixing protrusion 91, the fixing protrusion 91 is arranged from the surface of the plug post 9 to the direction away from the axis of the plug post, and the fixing protrusion 91 is arranged along the length direction of the plug post 9. The inner wall of the clamping groove 10 is provided with a sliding groove 10.1, and the fixing protrusion 91 is embedded in the sliding groove 10.1 to form sliding fit.

The working principle of the embodiment is as follows:

in practical use, a worker firstly embeds the side wall of the blade 4, which is far away from the blade edge, in the limiting groove 5, and then fixes the blade 4 on the mounting surface 21 through the fastening bolt 8; then, the worker inserts the inserting column 9 into the clamping groove 10 to form inserting fit, and then fixes the tool bit 102 and the tool shank 101 through the bolt; finally, the milling cutter is mounted on the cutting machine. In this way, in the using process, after the blades 4 on the cutter head 102 are broken, the workers can directly replace the damaged blades 4, so that the using cost of the ball end mill is greatly reduced.

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 ball-end mill comprises a cutter bar (1), and is characterized in that one end of the cutter bar (1) is provided with a plurality of mounting grooves (2), the side wall, parallel to the axial section of the cutter bar (1), in each mounting groove (2) is a mounting surface (21), one side, far away from the cutter bar (1), of each mounting surface (21) is provided with an arc-shaped surface (3), and each arc-shaped surface (3) forms a spherical arc surface (31); the mounting surface (21) is provided with a blade (4), and the blade (4) is provided with a fixing piece for detachably and fixedly connecting the blade (4) and the cutter bar (1).

2. The ball end mill according to claim 1, characterized in that the side of the tool holder (1) facing away from the cutting edge of the insert (4) is provided with a limiting groove (5), and the side of the insert (4) facing away from the cutting edge is embedded in the limiting groove (5).

3. The ball end mill according to claim 1, characterized in that the fixing member is a fastening bolt (8), the fastening bolt (8) is inserted through the insert (4), and the end of the fastening bolt (8) is inserted through the mounting surface (21) and is in threaded connection with the mounting surface (21).

4. A ball end mill according to claim 1, characterized in that the side of the insert (4) facing away from the mounting surface (21) cooperates with the mounting groove (2) to form a chip pocket (6).

5. The ball end mill according to claim 4, characterized in that the shank (1) is provided with chip flutes (7) along its length, said chip flutes (7) communicating with the chip flutes (6).

6. The ball end mill according to claim 5, characterized in that the bottom of the chip flute (7) is provided with a guiding arc surface (71), said guiding arc surface (71) being arranged obliquely from its connection with the chip flute (6) in the direction of the outside of the holder (1).

7. The ball end mill according to claim 1, wherein the tool bar (1) comprises a tool shank (101) and a tool bit (102), wherein an insert column (9) is arranged at one end of the tool bit (102) close to the tool shank (101), a clamping groove (10) is arranged at one end of the tool shank (101) close to the tool bit (102), and the insert column (9) is embedded into the clamping groove (10); the inserting column (9) is detachably and fixedly connected with the clamping groove (10) through a bolt.

8. The ball end mill according to claim 7, wherein the peripheral side wall of the insert post (9) is provided with a fixing protrusion (91) along the length direction thereof, and the slot (10) is provided with a sliding groove (10.1) for embedding the fixing protrusion (91).

9. The ball end mill according to claim 7, characterized in that the end of the tool bit (102) close to the shank (101) is provided with a stop ring (11) for stopping flying chips, the stop ring (11) being arranged on the periphery of the tool bit (102).