CN210817631U

CN210817631U - High-stability cylindrical milling cutter

Info

Publication number: CN210817631U
Application number: CN201921782451.XU
Authority: CN
Inventors: 刘红城; 陈伟洪; 杨莉; 曹竞赛
Original assignee: Shenzhen Yueniu Technology Co ltd
Current assignee: Shenzhen Yueniu Technology Co ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-06-23
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses a cylindrical milling cutter of high stability, its technical scheme main points are: including blade and spliced pole, the spliced pole terminal surface is coaxial to be run through there is the mounting hole, the blade is inserted and is arranged in the mounting hole, the blade is kept away from the position coaxial fixation of its self tool bit has the installation piece, the installation piece is arranged in the outer wall and the laminating of mounting hole inner wall of installation slip and installation piece in the mounting hole, spliced pole lower extreme coaxial coupling has the installation cover, installation cover inner wall and the laminating of blade outer wall, the locating hole has been seted up to the installation piece lateral wall, the spliced pole lateral wall runs through along its axis direction has a plurality of spacing holes rather than the inner chamber intercommunication, spacing screw has been put in the locating hole, spacing screw passes spacing hole and its and spacing hole. After the tool bit of blade takes place to damage, the blade can polish a cutter head again to with the blade from the spliced pole in one end distance of moving out, make the blade be difficult for receiving the influence in the course of working, no longer need abandon whole milling cutter simultaneously, the cost is reduced.

Description

High-stability cylindrical milling cutter

Technical Field

The utility model belongs to the lathe annex, more specifically say, it relates to a cylindrical milling cutter of high stability.

Background

Under the trend of electronic products to be light, thin, short and small, the volumes of various electronic products are gradually reduced, the manufacturing and processing processes of various parts inside the electronic products are relatively more and more delicate, and a general Printed Circuit Board (PCB) is an indispensable element of the electronic products, and the volume of the printed circuit board must be reduced along with the volume of the electronic products.

Milling cutters are the requisite cutting tools in the manufacture of printed circuit substrates. The milling cutter and the printed circuit substrate are in a high-speed running high-temperature friction environment, the cutter point of the milling cutter is easy to be lost when the milling cutter is contacted with the printed circuit substrate, the traditional method is to scrap the whole milling cutter as a waste product, and buy a new milling cutter again.

And a large amount of resources are wasted by directly replacing the milling cutter, and the production cost is higher.

Therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a cylindrical milling cutter of high stability, after the tool bit of blade damages or breaks, no longer need change whole milling cutter, the cost is reduced.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a high stability's cylinder milling cutter, includes blade and spliced pole, the coaxial mounting hole that runs through of spliced pole terminal surface, the blade is inserted and is arranged in the mounting hole, the blade is kept away from the coaxial installation piece that is fixed with in position of its self tool bit, the installation piece is arranged in the mounting hole and is slided and install the outer wall and the laminating of mounting hole inner wall of piece, spliced pole lower extreme coaxial coupling has the installation cover, installation cover inner wall and the laminating of blade outer wall, the locating hole has been seted up to installation piece lateral wall, the spliced pole lateral wall runs through the spacing hole that has a plurality of rather than the inner chamber intercommunication along its axis direction, set up stop screw in the locating hole, stop screw passes spacing hole and its and spacing hole threaded connection.

Through adopting above-mentioned technical scheme, after the tool bit of blade takes place wearing and tearing or break, the terminal surface that keeps away from the installation piece at the blade has reprocessed the tool bit, later will insert the blade of arranging in the mounting hole and move towards the installation cover direction, make the locating hole align with another spacing hole that is closer to the installation cover, thereby restrict the position of installation piece with spacing screw and this spacing hole threaded connection, milling cutter can continue to use this moment and no longer need change milling cutter wholly, thereby the cost is reduced.

The utility model discloses further set up to: the mounting sleeve is characterized in that the inner wall of the mounting sleeve is fixedly connected with a butt joint block, and the butt joint block is abutted against the groove bottom of a chip groove of the knife body.

Through adopting above-mentioned technical scheme, utilize the butt piece to restrict the position of blade, the cutting edge of blade is difficult for receiving the pressure that the installation cover was exerted, makes the difficult production of cutting edge of blade damaged.

The utility model discloses further set up to: the direction thread groove has been seted up to the mounting hole inner wall, the pitch of direction thread groove equals with the pitch of the chip groove of blade, installation piece and direction thread groove screw-thread fit, the butt joint piece is the heliciform, the helix of direction thread groove coincides with the helix of butt joint piece, the helix of direction thread groove coincides with the helix of a chip groove of blade.

Through adopting above-mentioned technical scheme, make installation piece and spliced pole screw-thread fit when arranging the blade in the mounting hole, utilize the direction thread groove to carry out with the guide to the removal of blade to the turned angle and the axial displacement of blade are restricted, make the butt piece difficult when implanting the chip groove of blade produce the collision with the cutting edge of blade.

The utility model discloses further set up to: the axial length of the connecting column is greater than that of the knife body.

Through adopting above-mentioned technical scheme, its removal can receive the direction of direction thread groove when the blade is not with the butt piece contact to the difficult condition that takes place the cutting edge damage of blade.

The utility model discloses further set up to: the installation sleeve is detachably connected with the connecting column, two fastening bolts penetrate through the end face, far away from the connecting column, of the installation sleeve, and the fastening bolts penetrate through the installation sleeve and are in threaded connection with the connecting column.

Through adopting above-mentioned technical scheme, when needs take out the blade from the mounting hole, will install the cover and the spliced pole separation, the blade only need remove shorter distance this moment and just can follow the mounting hole and take out to it is more convenient to make the change of blade.

The utility model discloses further set up to: the terminal surface fixedly connected with guide block of spliced pole is close to the installation cover, the spliced pole is close to the terminal surface of installation cover and has seted up the guide way, the guide block is inserted and is arranged in the guide way.

Through adopting above-mentioned technical scheme, utilize the guide block to inject the relative position of installation cover and spliced pole, make the blade when receiving the direction of direction thread groove it can not produce the collision with the butt piece.

The utility model discloses further set up to: the guide blocks are two, and the two guide blocks are respectively positioned on two sides of the axis of the installation sleeve.

By adopting the technical scheme, the stress on two sides of the axis of the mounting sleeve is kept balanced, and the milling cutter is not easy to shake in the rotating process.

The utility model discloses further set up to: the edge of the opening of the inner wall of the mounting hole, which is far away from the mounting sleeve, is provided with a wedge-shaped surface, and one end, which is close to the axis of the mounting hole, of the wedge-shaped surface inclines towards the mounting sleeve.

Through adopting above-mentioned technical scheme, utilize the wedge face to increase the mounting hole and kept away from the open-ended area of installation cover, utilize the wedge face to lead to the removal of blade simultaneously, make the blade be difficult for producing the collision with the spliced pole.

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

1. after the cutter head of the cutter body is damaged, the cutter head at the position of the cutter body can be polished again, and the cutter body is moved out of the connecting column by a distance, so that the cutter body is not easily influenced in the machining process, and meanwhile, the whole milling cutter does not need to be discarded, and the cost is reduced;

2. utilize spiral helicine butt piece to support the blade, make the cutting edge of blade be difficult for receiving pressure, make the difficult emergence of cutting edge of blade damage.

Drawings

FIG. 1 is a perspective view of the present embodiment;

FIG. 2 is a schematic view of the present embodiment for illustrating an inner structure of the mounting hole;

fig. 3 is an enlarged view of a portion a of fig. 2.

Description of the drawings: 1. a blade body; 11. mounting blocks; 111. positioning holes; 2. connecting columns; 21. mounting holes; 211. a wedge-shaped surface; 22. a limiting hole; 23. a limit screw; 24. a guide thread groove; 25. a guide groove; 3. installing a sleeve; 31. a butting block; 32. fastening a bolt; 33. and a guide block.

Detailed Description

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

A high-stability cylindrical milling cutter is shown in figure 1 and comprises a cutter body 1 and a cylindrical connecting column 2, wherein the end face of the connecting column 2 coaxially penetrates through a mounting hole 21, the cutter body 1 is inserted into the mounting hole 21, and the outer wall of the cutter body is attached to the inner wall of the mounting hole 21. As shown in fig. 2, the end surface of the knife body 1 far from the knife head is coaxially welded with a mounting block 11, the diameter of the outer wall of the mounting block 11 is equal to that of the outer wall of the knife body 1, the mounting block 11 is arranged in the mounting hole 21 to slide, and the outer wall of the mounting block 11 is attached to the inner wall of the mounting hole 21. The side wall of the mounting block 11 is provided with a positioning hole 111, the axis of the positioning hole 111 passes through the axis of the mounting block 11, and a limit screw 23 is inserted in the positioning hole 111. The side wall of the connecting column 2 is penetrated with a plurality of limiting holes 22 communicated with the inner cavity of the connecting column along the axis direction, the distance between the adjacent limiting holes 22 is equal to the thread pitch, and the limiting screw 23 penetrates through the limiting holes 22 and is in threaded connection with the limiting holes 22. The end face of the connecting column 2 close to the cutter head of the cutter body 1 is coaxially connected with an installation sleeve 3, the cutter body 1 penetrates through the installation sleeve 3 (see fig. 3), and the outer wall of the cutter body 1 is attached to the inner wall of the installation sleeve 3. After the tool bit of the tool body 1 is worn or broken, the tool bit is machined again on the end face, far away from the mounting block 11, of the tool body 1, then the tool body 1 inserted into the mounting hole 21 moves towards the mounting sleeve 3, the positioning hole 111 is aligned with the other limiting hole 22, close to the mounting sleeve 3, the limiting screw 23 is in threaded connection with the limiting hole 22, the position of the mounting block 11 is limited, at the moment, the milling cutter can be continuously used, the milling cutter does not need to be integrally replaced, and therefore cost is reduced.

As shown in fig. 3, when the milling cutter is used, the outer wall of the cutter body 1 is pressed by the mounting sleeve 3, and the cutting edge of the cutter body 1 is damaged due to the excessive pressure applied to the cutter body 1. Therefore, the abutting block 31 is integrally formed on the inner wall of the mounting sleeve 3, and one end of the abutting block 31 close to the axis of the mounting sleeve 3 abuts against the groove bottom of the chip groove of the cutter body 1. At this time, the position of the blade 1 is restricted by the abutment block 31, and the cutting edge of the blade 1 is less likely to receive the pressure applied by the mounting sleeve 3, so that the cutting edge of the blade 1 is less likely to be damaged.

As shown in fig. 2 and 3, since the cutter body 1 needs to be rotated when the abutment block 31 is inserted into the chip groove of the cutter body 1, it is difficult to control the rotation angle of the cutter body 1 and the distance of movement in the axial direction thereof, and the cutter body 1 is likely to have a cutting edge which collides with the abutment block 31 and is damaged. Therefore, the inner wall of the mounting hole 21 is provided with a guide thread groove 24. The pitch of the guide thread groove 24 is equal to the pitch of the chip groove of the blade 1, and the mounting block 11 is screwed with the guide thread groove 24. The abutting block 31 is in a spiral shape, the thread line of the guide thread groove 24 coincides with the thread line of the abutting block 31, the spiral line of the guide thread groove 24 coincides with the spiral line of a chip removal groove of the cutter body 1, and the spiral line of the thread matched with the guide thread groove 24 of the mounting block 11 coincides with the spiral line of the chip removal groove of the cutter body 1 contacted with the abutting block 31. When the blade 1 is placed in the mounting hole 21, the mounting block 11 is screwed with the connecting column 2, and the movement of the blade 1 is guided by the guide thread groove 24, so that the rotation angle and the axial movement of the blade 1 are limited, and the abutting block 31 is not easy to collide with the cutting edge of the blade 1 when being implanted into the chip groove of the blade 1.

As shown in fig. 2, in order to make the blade 1 not contact with the mounting sleeve 3, the mounting block 11 can be connected with the connecting column 2, the axial length of the connecting column 2 is greater than that of the blade 1, and at this time, when the blade 1 does not contact with the abutting block 31, the movement of the blade can be guided by the guide thread groove 24, and the cutting edge of the blade 1 does not directly contact with the abutting block 31, so that the cutting edge of the blade 1 is not easily damaged.

As shown in fig. 2 and 3, since the mounting block 11 is close to the mounting sleeve 3 after the blade 1 is moved several times, the blade 1 needs to be moved a longer distance when being taken out from the mounting hole 21, which makes the process of taking out the blade 1 troublesome. Therefore, the mounting sleeve 3 is detachably connected with the connecting column 2, two fastening bolts 32 are arranged on the end face, far away from the connecting column 2, of the mounting sleeve 3 in a penetrating mode, the two fastening bolts 32 are respectively arranged on the two sides of the axis of the mounting hole 21, and the two fastening bolts 32 penetrate through the mounting sleeve 3 and are in threaded connection with the connecting column 2. At this moment, when the blade 1 needs to be taken out of the mounting hole 21, the mounting sleeve 3 is separated from the connecting column 2, and at this moment, the blade 1 only needs to move for a short distance to be taken out of the mounting hole 21, so that the blade 1 is more convenient to replace.

As shown in fig. 2 and 3, when the mounting sleeve 3 is remounted to the lower end of the connecting column 2, it is difficult to determine whether the spiral line of the abutting block 31 coincides with the spiral line of the guiding thread groove 24, so that the end surface of the mounting sleeve 3 close to the connecting column 2 is integrally formed with two guiding blocks 33, the guiding blocks 33 are respectively located on two sides of the axis of the mounting sleeve 3, the end surface of the connecting column 2 close to the mounting sleeve 3 is provided with the guiding groove 25, the guiding blocks 33 are inserted into the guiding groove 25, and the side wall of the guiding block 33 parallel to the axis of the connecting column 2 is attached to the inner wall of the guiding groove 25. The relative position of the mounting sleeve 3 and the connecting column 2 is limited by the guide block 33, so that the cutter body 1 does not collide with the abutting block 31 when guided by the guide thread groove 24.

As shown in fig. 2, in order to facilitate the insertion of the blade 1 into the connecting hole, the blade 1 is not easily collided with the connecting post 2. The opening edge of the inner wall of the mounting hole 21 far away from the mounting sleeve 3 is provided with a wedge-shaped surface 211, and one end of the wedge-shaped surface 211 close to the axis of the mounting hole 21 inclines towards the mounting sleeve 3. The wedge-shaped surface 211 is used for increasing the area of the mounting hole 21 far away from the opening of the mounting sleeve 3, and meanwhile, the wedge-shaped surface 211 is used for guiding the movement of the knife body 1, so that the knife body 1 is not easy to collide with the connecting column 2.

The working principle is as follows:

the tool bit of the tool body 1 faces the mounting hole 21 and is inserted into the mounting hole 21, the mounting block 11 is in threaded connection with the inner wall of the mounting hole 21, the tool body 1 is inserted into the mounting hole 21 and extends out of the mounting sleeve 3 by rotating, and then the limit screw 23 is screwed into the limit hole 22 and is inserted into the positioning hole 111.

After the tool bit of the tool body 1 is damaged or broken, the tool bit at the position of the tool body 1 is ground again, the limit screw 23 is screwed out, the tool body 1 is rotated to enable the mounting block 11 to move towards the mounting sleeve 3, and after the positioning hole 111 is aligned with one limit hole 22, the limit screw 23 is screwed into the limit hole 22.

When the blade 1 needs to be replaced, the fastening bolt 32 is rotated to separate the fastening bolt from the connecting column 2, then the mounting sleeve 3 is separated from the connecting column 2, and the blade 1 can be screwed out of the mounting hole 21. Then, the guide block 33 is inserted into the guide hole, and the fastening bolt 32 is threaded with the connecting column 2 through the mounting sleeve 3.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a high stability's cylinder milling cutter, includes blade (1) and spliced pole (2), its characterized in that: the end surface of the connecting column (2) coaxially penetrates through a mounting hole (21), the knife body (1) is inserted into the mounting hole (21), a mounting block (11) is coaxially fixed at the position of the knife body (1) far away from the knife head of the knife body, the mounting block (11) is arranged in the mounting hole (21) to slide, the outer wall of the mounting block (11) is attached to the inner wall of the mounting hole (21), the lower end of the connecting column (2) is coaxially connected with an installation sleeve (3), the inner wall of the installation sleeve (3) is attached to the outer wall of the knife body (1), the side wall of the mounting block (11) is provided with a positioning hole (111), the side wall of the connecting column (2) is penetrated with a plurality of limiting holes (22) communicated with the inner cavity of the connecting column along the axial direction, a limiting screw rod (23) is inserted into the positioning hole (111), and the limiting screw rod (23) penetrates through the limiting hole (22) and is in threaded connection with the limiting hole (22).

2. A high stability cylindrical milling cutter according to claim 1, wherein: the mounting sleeve (3) is fixedly connected with an abutting block (31) on the inner wall, and the abutting block (31) abuts against the groove bottom of a chip groove of the knife body (1).

3. A high stability cylindrical milling cutter according to claim 2, wherein: guide thread groove (24) have been seted up to mounting hole (21) inner wall, the pitch of guide thread groove (24) equals with the pitch of the chip groove of blade (1), installation piece (11) and guide thread groove (24) screw-thread fit, butt piece (31) are the heliciform, the helix of guide thread groove (24) coincides with the helix of butt piece (31), the helix of guide thread groove (24) coincides with the helix of a chip groove of blade (1).

4. A high stability cylindrical milling cutter according to claim 1, wherein: the axial length of the connecting column (2) is greater than that of the knife body (1).

5. A high stability cylindrical milling cutter according to claim 1, wherein: the mounting sleeve (3) is detachably connected with the connecting column (2), two fastening bolts (32) are arranged on the end face, far away from the connecting column (2), of the mounting sleeve (3) in a penetrating mode, and the fastening bolts (32) penetrate through the mounting sleeve (3) and are in threaded connection with the connecting column (2).

6. A high stability cylindrical milling cutter according to claim 5, wherein: the mounting sleeve (3) is close to the end face fixedly connected with guide block (33) of the connecting column (2), the connecting column (2) is close to the end face of the mounting sleeve (3) and is provided with a guide groove (25), and the guide block (33) is inserted into the guide groove (25).

7. A high stability cylindrical milling cutter according to claim 6, wherein: the number of the guide blocks (33) is two, and the two guide blocks (33) are respectively positioned on two sides of the axis of the installation sleeve (3).

8. A high stability cylindrical milling cutter according to claim 1, wherein: the wedge-shaped surface (211) has been seted up to open-ended border department that mounting hole (21) inner wall kept away from mounting sleeve (3), the one end that wedge-shaped surface (211) is close to mounting hole (21) axis is towards mounting sleeve (3) direction slope.