CN216176702U

CN216176702U - Inner hole boring cutter with double cutter heads

Info

Publication number: CN216176702U
Application number: CN202122230322.3U
Authority: CN
Inventors: 姚彬; 苏方友; 陈祖华
Original assignee: Sichuan West Precision Tool Co ltd
Current assignee: Sichuan West Precision Tool Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-04-05
Anticipated expiration: 2031-09-15

Abstract

The utility model discloses an inner hole boring cutter with double cutter heads, which comprises a cutter bar, wherein a bottom cutter head is inserted into the bottom of the cutter bar, cutter seats are movably arranged on two sides of the outer part of the bottom cutter head, a cutter head body is arranged at the bottom of each cutter seat, a fixing bolt is arranged in each cutter head body and used for fixing the cutter head body to the cutter seats, an adjusting screw rod is movably arranged in each bottom cutter head, a worm is arranged at the central position of the adjusting screw rod, a sleeve is movably arranged outside the adjusting screw rod, and one end of the sleeve is connected with the cutter seats. According to the utility model, the wrench is inserted into the adjusting bolt, then the adjusting bolt is rotated, the adjusting bolt drives the worm wheel to rotate, the worm wheel drives the worm to rotate, and further drives the adjusting screw rod to rotate, so that the adjusting screw rod drives the sleeve to move, the tool apron can move in the tool bit at the bottom, the tool bit body can move, and the size of a boring hole can be adjusted.

Description

Inner hole boring cutter with double cutter heads

Technical Field

The utility model relates to the technical field of boring cutters, in particular to an inner hole boring cutter with double cutter heads.

Background

The boring cutter is one kind of boring cutter, generally a round handle, and a square cutter rod is also used for a larger workpiece, and the most common occasions are inner hole processing, hole expanding, profiling and the like. Tools with one or two cutting parts, specially adapted for roughing, semi-finishing or finishing existing holes. The boring tool may be used on a boring machine, a lathe or a milling machine.

However, the existing boring cutter is inconvenient to adjust the size of the boring hole when in use and has poor practicability.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-cutter-head inner hole boring cutter to solve the problem of inconvenient adjustment of the size of a bored hole in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a hole boring cutter of double knives head, includes the cutter arbor, the bottom tool bit has been inserted to the inside of cutter arbor bottom, the outside both sides activity of bottom tool bit is provided with the blade holder, the bottom of blade holder is provided with the tool bit body, be provided with fixing bolt in the tool bit body, fixing bolt fixes the tool bit body to the blade holder, the inside activity of bottom tool bit is provided with adjusting screw, just adjusting screw's central point puts and is provided with the worm, adjusting screw's outside activity is provided with the sleeve, telescopic one end and blade holder interconnect, the inside activity of bottom tool bit is provided with adjusting bolt, adjusting bolt is provided with the worm wheel, worm wheel and worm intermeshing.

Preferably, the tool apron is symmetrical about the center of the bottom tool bit, the worm wheel is movably arranged inside the bottom tool bit, and the worm wheel achieves the purpose of transmission.

Preferably, both sides of cutter arbor bottom are provided with the screw, the inside of screw is provided with construction bolt, construction bolt passes bottom tool bit and is fixed with the inside of bottom tool bit, and construction bolt has decocted the purpose of fixed bottom tool bit.

Preferably, the top of the cutter bar is connected with a connecting piece, the center of the top of the connecting piece is movably connected with a screw rod through threads, a fixing piece is fixed on the top of the screw rod, and the top of the fixing piece is connected with a supporting block.

Preferably, the bottom sleeve is movably arranged outside the connecting piece, a limiting block is fixed to the top of the bottom sleeve, a limiting groove is formed in the limiting block, a top sleeve is fixed to the top of the limiting block, and the limiting groove achieves the limiting purpose.

Preferably, the connecting piece, the cutter arbor, the bottom tool bit and the outside coating of tool bit body have chromium coating, chromium coating's outside coating has the titanium nitride coating, the outside coating of titanium nitride coating has the titanium alurninide coating, and the cladding has played the purpose that improves the intensity of cutter.

Compared with the prior art, the utility model has the beneficial effects that: the inner hole boring cutter with double cutter heads has reasonable structure and the following advantages:

(1) through being provided with the tool bit body, the blade holder, adjusting bolt, the worm wheel, the worm, adjusting screw and sleeve have realized that the device can adjust the purpose of the size of bore hole, therefore, during the use, insert adjusting bolt through with the spanner, then rotate adjusting bolt, adjusting bolt will drive the worm wheel and rotate, the worm wheel will drive the worm and rotate, and then drive adjusting screw and rotate, thereby adjusting screw will drive the sleeve and remove, thereby can make the blade holder remove in the tool bit of bottom, thereby make the tool bit body remove, thereby can adjust the size of bore hole.

(2) The purpose that the cutter can adapt to different cutter pockets is realized through being provided with connecting piece, mounting, screw rod and supporting shoe, and consequently, current cutter pocket degree of depth is different, leads to the cutter not to be suitable for different cutter pockets, consequently, during the use, through rotating the supporting shoe, the supporting shoe just can make the mounting rotate to the mounting just can make the screw rod deviate from the connecting piece, thereby can adjust the length between the mounting, thereby can adapt to the cutter pocket of the different degree of depth.

(3) The chromium coating, the titanium nitride coating and the titanium aluminum nitride coating are arranged to achieve the purpose of enhancing the strength and the corrosion resistance of the device, so that the chromium coating, the titanium nitride coating and the titanium aluminum nitride coating are coated outside the cutter in use, the chromium coating is high in stability in air and has high passivation capability, a very thin passivation film can be rapidly generated on the surface and can resist corrosion of atmosphere, alkali and certain acids, the hardness of the coating is high, the wear resistance of the surface of a product can be improved, the titanium nitride coating is high in hardness and wear resistance and good in oxidation resistance, and the titanium aluminum nitride coating is good in toughness, the bonding strength of the coating and a base body and the wear resistance of the coating.

Drawings

FIG. 1 is a front view of an inner hole boring tool with two tool bits according to the present invention;

FIG. 2 is a schematic top view of the inner hole boring tool with two tool bits according to the present invention;

FIG. 3 is a partial external view of the inner bore boring tool with dual tool bits according to the present invention;

fig. 4 is an enlarged schematic structural diagram of an inner hole boring cutter with double tool bits in fig. 1 at a position A.

In the figure: 1. a top cover; 2. a limiting block; 3. a bottom cover; 4. a connecting member; 5. a cutter bar; 6. a chromium plating layer; 7. a titanium nitride coating; 8. a titanium aluminum nitride coating; 9. a bottom cutter head; 10. installing a bolt; 11. a screw hole; 12. a tool bit body; 13. fixing the bolt; 14. a tool apron; 15. a limiting groove; 16. a fixing member; 17. a screw; 18. a support block; 19. adjusting the bolt; 20. a worm gear; 21. a worm; 22. adjusting the lead screw; 23. a sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention is shown: an inner hole boring cutter with double cutter heads comprises a cutter bar 5, a bottom cutter head 9 is inserted into the bottom of the cutter bar 5, cutter seats 14 are movably arranged on two sides of the outer portion of the bottom cutter head 9, a cutter head body 12 is arranged at the bottom of the cutter seats 14, a fixing bolt 13 is arranged in the cutter head body 12, the cutter head body 12 is fixed on the cutter seats 14 through the fixing bolt 13, the cutter bar 5 and the bottom cutter head 9 are fixed with each other through the fixing bolt 13, an adjusting lead screw 22 is movably arranged in the bottom cutter head 9, a worm 21 is arranged at the central position of the adjusting lead screw 22, the adjusting lead screw 22 is driven to rotate through the rotation of the worm 21, a sleeve 23 is movably arranged outside the adjusting lead screw 22, the adjusting lead screw 22 enables the sleeve 23 to rotate, one end of the sleeve 23 is mutually connected with the cutter seats 14, the sleeve 23 rotates to enable the cutter seats 14 to move, so that the size of a boring hole is adjusted, an adjusting bolt 19 is movably arranged in the bottom cutter head 9, the adjusting bolt 19 is provided with a worm wheel 20, the worm wheel 20 is meshed with the worm 21, the adjusting bolt 19 is inserted into the adjusting bolt 19 through a wrench, then the adjusting bolt 19 is rotated, the adjusting bolt 19 drives the worm wheel 20 to rotate, the tool apron 14 is symmetrical about the center position of the bottom tool bit 9, and the worm wheel 20 is movably arranged inside the bottom tool bit 9;

when the tool is used, the wrench is inserted into the adjusting bolt 19, then the adjusting bolt 19 is rotated, the adjusting bolt 19 drives the worm wheel 20 to rotate, the worm wheel 20 drives the worm 21 to rotate, and further drives the adjusting lead screw 22 to rotate, so that the adjusting lead screw 22 drives the sleeve 23 to move, the tool apron 14 can move in the bottom tool bit 9, the tool bit body 12 can move, and the size of a bored hole can be adjusted;

screw holes 11 are formed in two sides of the bottom of the cutter bar 5, mounting bolts 10 are arranged inside the screw holes 11, and the mounting bolts 10 penetrate through the bottom cutter head 9 and are fixed with the inside of the bottom cutter head 9;

the top of the cutter bar 5 is connected with a connecting piece 4, the center position of the top of the connecting piece 4 is movably connected with a screw 17 through threads, the top of the screw 17 is fixed with a fixing piece 16, the fixing piece 16 can be rotated by rotating a supporting block 18, so that the fixing piece 16 can enable the screw 17 to move from the connecting piece 4, the length between the fixing piece 16 and the connecting piece 4 can be adjusted, the top of the fixing piece 16 is connected with the supporting block 18, a bottom sleeve 3 is movably arranged outside the connecting piece 4, a limiting block 2 is fixed at the top of the bottom sleeve 3, a limiting groove 15 is arranged on the limiting block 2, and a top sleeve 1 is fixed at the top of the limiting block 2;

the existing cutter pockets are different in depth, so that the cutter is not suitable for different cutter pockets, and therefore when the cutter pocket is used, the supporting block 18 can enable the fixing piece 16 to rotate by rotating the supporting block 18, and the fixing piece 16 can enable the screw 17 to move from the connecting piece 4, so that the length between the fixing pieces 16 can be adjusted, and the cutter pocket can be adapted to cutter pockets with different depths;

the exterior of the connecting piece 4, the cutter bar 5, the bottom cutter head 9 and the cutter head body 12 is coated with a chromium coating 6, the exterior of the chromium coating 6 is coated with a titanium nitride coating 7, and the exterior of the titanium nitride coating 7 is coated with a titanium aluminum nitride coating 8;

when the tool is used, the chromium coating 6, the titanium nitride coating 7 and the titanium aluminum nitride coating 8 are coated on the outer part of the tool, the chromium coating 6 has high stability in air and has strong passivation capability, a very thin passivation film can be rapidly generated on the surface, the corrosion of atmosphere, alkali and certain acid can be resisted, the hardness of the coating is high, the wear resistance of the surface of a product can be improved, the titanium nitride coating 7 has high hardness and wear resistance, the oxidation resistance is good, and the titanium aluminum nitride coating 8 improves the toughness of the coating, the bonding strength of the coating and a base body and the wear resistance of the coating.

When the tool bit is used, the supporting block 18 rotates to enable the fixing piece 16 to rotate, the fixing piece 16 enables the screw 17 to move from the connecting piece 4, the length between the fixing piece 16 and the connecting piece 4 can be adjusted, then the connecting piece 4 is inserted into the tool sleeve to be fixed, then the tool is fixed on a machine tool to work, then the tool is inserted into the adjusting bolt 19 through a wrench, then the adjusting bolt 19 rotates, the adjusting bolt 19 drives the worm wheel 20 to rotate, the worm wheel 20 drives the worm 21 to rotate, further the adjusting screw rod 22 is driven to rotate, further the adjusting screw rod 22 drives the sleeve 23 to move, further the tool bit 14 can move in the tool bit 9 at the bottom, the tool bit body 12 moves, further the distance between the tool bits is adjusted, and the chromium coating 6, the titanium nitride coating 7, the titanium coating 7, the chromium coating is coated on the outer portion of the tool bit, The titanium aluminum nitride coating 8 and the chromium coating 6 have high stability in air and strong passivation capability, a very thin passivation film can be rapidly generated on the surface, the corrosion of atmosphere, alkali and certain acids can be resisted, the hardness of the coating is high, the wear resistance of the surface of a product can be improved, the titanium nitride coating 7 has high hardness and wear resistance and good oxidation resistance, and the titanium aluminum nitride coating 8 improves the toughness of the coating, the bonding strength of the coating and a base body and the wear resistance of the coating.

Claims

1. The utility model provides an inner hole boring cutter of double knives head which characterized in that: comprises a cutter bar (5), a bottom cutter head (9) is inserted into the bottom of the cutter bar (5), the cutter seats (14) are movably arranged on two sides of the outside of the bottom cutter head (9), a cutter head body (12) is arranged at the bottom of the cutter seats (14), a fixing bolt (13) is arranged in the cutter head body (12), the cutter head body (12) is fixed on the cutter seats (14) by the fixing bolt (13), an adjusting lead screw (22) is movably arranged in the bottom cutter head (9), a worm (21) is arranged at the central position of the adjusting lead screw (22), a sleeve (23) is movably arranged outside the adjusting lead screw (22), one end of the sleeve (23) is connected with the cutter seats (14) mutually, an adjusting bolt (19) is movably arranged in the bottom cutter head (9), and a worm wheel (20) is arranged on the adjusting bolt (19), the worm wheel (20) is meshed with the worm (21).

2. The double-bit inner hole boring cutter according to claim 1, characterized in that: the tool apron (14) is symmetrical about the center of the bottom tool bit (9), and the worm wheel (20) is movably arranged inside the bottom tool bit (9).

3. The double-bit inner hole boring cutter according to claim 1, characterized in that: both sides of cutter arbor (5) bottom are provided with screw (11), the inside of screw (11) is provided with construction bolt (10), construction bolt (10) pass bottom tool bit (9) and fixed with the inside of bottom tool bit (9).

4. The double-bit inner hole boring cutter according to claim 1, characterized in that: the top of the cutter bar (5) is connected with a connecting piece (4), the center of the top of the connecting piece (4) is movably connected with a screw rod (17) through threads, a fixing piece (16) is fixed at the top of the screw rod (17), and the top of the fixing piece (16) is connected with a supporting block (18).

5. The double-bit inner hole boring cutter according to claim 4, wherein: the outer portion of the connecting piece (4) is movably provided with a bottom sleeve (3), a limiting block (2) is fixed to the top of the bottom sleeve (3), a limiting groove (15) is formed in the limiting block (2), and a top sleeve (1) is fixed to the top of the limiting block (2).

6. The double-bit inner hole boring cutter according to claim 4, wherein: the outside coating of connecting piece (4), cutter arbor (5), bottom tool bit (9) and tool bit body (12) has chromium coating (6), the outside coating of chromium coating (6) has titanium nitride coating (7), the outside coating of titanium nitride coating (7) has titanium aluminium nitride coating (8).