CN213591868U

CN213591868U - Reducing ball-end milling cutter

Info

Publication number: CN213591868U
Application number: CN202022308739.2U
Authority: CN
Inventors: 侯霄寒; 陈勇
Original assignee: Chengdu Hangwei Precision Cutting Co ltd
Current assignee: Chengdu Hangwei Precision Cutting Co ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-07-02
Anticipated expiration: 2030-10-16

Abstract

The utility model discloses a reducing ball end milling cutter, including handle of a knife, tool bit subassembly, reducing mechanism and drive assembly, the tool bit subassembly with handle of a knife fixed connection, reducing mechanism's one end with the handle of a knife passes through drive mechanism swing joint, the other end with tool bit subassembly swing joint, drive mechanism passes through the drive reducing mechanism removes towards the direction of keeping away from or being close to the handle of a knife, can change reducing mechanism expansion or shrink. When the cutter is used, after the cutter head assembly is used, the diameter-changing section of the diameter-changing mechanism can further cut the aperture or the groove wall cut by the cutter head assembly through expansion to realize accurate cutting, and when the cutter is used for cutting with different requirements, the diameter of the cutter head assembly can be changed after the diameter-changing mechanism is adjusted to reach the preset diameter, so that different requirements can be met, and the problem that a large number of milling cutters need to be prepared or non-calibration is needed in machining is solved.

Description

Reducing ball-end milling cutter

Technical Field

The utility model relates to a machine tooling cutter technical field, concretely relates to reducing ball end milling cutter.

Background

The ball end milling cutter is a cutter with a cutting edge similar to a ball end and assembled on a milling machine for milling various curved surfaces and arc grooves. Ball end mills are also known as R-cutters. Can carve the raw materials under the drive of drive arrangement to make the raw materials become the shape that requires after ball end mill processing.

The diameter of the existing ball end milling cutter is generally fixed diameter when in use, frequent cutter changing is needed according to different apertures and cutting requirements, so that a product can be completed only by a plurality of milling cutters of different models, especially when non-standard design is met, the standard cutter diameter can not meet the non-standard requirement of the requirement, and particularly, the corresponding milling cutter needs to be customized to complete the operation, so that the construction period is slow.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that current ball end milling cutter's diameter generally needs frequent tool changing for fixed diameter when using according to the aperture of difference and cutting demand, leads to a product to need a lot of milling cutter of different models just can accomplish, especially when meetting non-standard design, the nonstandard demand of demand can not be satisfied to the cutter diameter of standard, need to customize corresponding milling cutter more and just can accomplish, leads to the time limit for a project to accomplish slowly.

The utility model discloses a following technical scheme realizes:

the utility model provides a reducing ball end milling cutter, its characterized in that, includes handle of a knife, tool bit subassembly, reducing mechanism and drive assembly, the tool bit subassembly with handle of a knife fixed connection, reducing mechanism's one end with the handle of a knife passes through drive mechanism swing joint, the other end with tool bit subassembly swing joint, drive mechanism is through the drive reducing mechanism removes towards the direction of keeping away from or being close to the handle of a knife, can let reducing mechanism expansion or shrink.

The diameter of the existing ball end milling cutter is generally fixed diameter when in use, frequent cutter changing is needed according to different apertures and cutting requirements, so that a product can be completed only by a plurality of milling cutters of different models, especially when non-standard design is met, the standard cutter diameter can not meet the non-standard requirement of the requirement, and particularly, the corresponding milling cutter needs to be customized to complete the operation, so that the construction period is slow. This application is through setting up reducing mechanism between tool bit and handle of a knife, and drive assembly and handle of a knife swing joint are passed through to reducing mechanism's one end, the other end and handle of a knife swing joint, handle of a knife and tool bit subassembly fixed connection, perhaps handle of a knife and tool bit subassembly are integrated into one piece, move along the axis direction of handle of a knife through drive assembly drive reducing mechanism during the use, because reducing mechanism's the other end and tool bit subassembly swing joint, thereby reach reducing mechanism outwards expansion or shrink realization reducing under drive assembly's effect, at first when using after the cutting of tool bit subassembly, reducing mechanism's reducing section can carry out further cutting through the expansion and realize accurate cutting to aperture or cell wall that tool bit subassembly cut, only need transfer when carrying out the cutting of different demands and realize accurate cutting

The section diameter-changing mechanism can change the cutting diameter after reaching the preset diameter, so that different requirements can be met, and the problem that a large number of milling cutters need to be prepared or non-standard machining needs to be carried out in the mechanical machining process is solved.

Furthermore, reducing mechanism includes drive block, actuating arm and cutting arm, actuating arm one end with the drive block is articulated, the actuating arm other end with the one end of cutting arm is articulated, the other end of cutting arm with the tool bit subassembly is articulated, the drive block pass through drive assembly with handle of a knife swing joint, drive mechanism is through the drive block is towards keeping away from or being close to the direction removal of handle of a knife. The driving mechanism drives the driving block to move along the axial direction of the cutter handle, the driving block drives the driving arm to move after moving, and the end part of the cutting arm is hinged to the cutter head assembly, so that the driving arm can drive the cutting arm to rotate along the hinged point of the cutting arm and the cutter head assembly after moving, the inclination angle of the cutting arm is changed, and diameter changing is achieved.

Further, actuating mechanism includes the actuating lever, the handle of a knife sets up porosely along the axis of handle of a knife, the actuating lever install in the hole, and the actuating lever can only follow the axis in hole rotates, the tip of actuating lever is provided with the screw thread, be provided with the screw hole on the driving block, the tip of actuating lever cooperates with the screw hole of driving block with driving block and handle of a knife swing joint. By mounting the drive rod in the hole and letting the drive rod only rotate in the hole and not move. The thread at the end of the driving rod is matched with the threaded hole on the driving block. Through rotating the driving rod, the driving block is driven by the threads of the driving rod to move along the axis of the knife handle.

The driving rod comprises a first section, a second section and a third section, the diameters of the first section, the second section and the third section are sequentially reduced, a retaining ring clamping groove is formed in one side, close to the second section, of the third section, threads are arranged on the third section of the driving rod, a limiting table is arranged in the hole, one end, provided with threads, of the driving rod penetrates through the hole, the retaining ring is arranged in the retaining ring clamping groove, the driving rod can only be rotatably arranged in the hole through the cooperation of the first section and the retaining ring, and the driving block is movably connected with the cutter handle through the cooperation of the third section of the driving rod and the threaded hole of the driving block. The driving rod is arranged into three sections, the first section is limited, the second section is matched with the inner ring of the limiting table, and the retainer ring is limited on the other side of the limiting table, so that the driving rod can only rotate along the axis of the hole without relative movement, and the driving rod is driven by the threads of the third section to move to realize diameter reduction.

Further, still include the bearing, the inner circle cover of bearing establish with on the second section of actuating lever, the outer lane of bearing with the inner wall laminating in hole. The bearing is established through the cover on the second section of actuating lever, through the bearing can be better let the actuating lever rotate, guaranteed rocking of actuating lever simultaneously.

Furthermore, one end of the knife handle close to the knife head assembly is provided with a rectangular through groove, the rectangular through groove penetrates through the end part of the knife handle, one end of the knife head assembly close to the knife handle is provided with an ear piece group, the cutting arm is hinged to the ear piece group through a rotating shaft, and the ear piece group is inserted into the rectangular through groove and fixed to the knife handle through a bolt. Through setting up the rectangle and leading to groove with reducing mechanism and tool bit unit mount in the rectangle leads to the inslot, realize fixed with handle of a knife and tool bit unit, the rectangle leads to the groove simultaneously and can hold reducing mechanism, and reducing mechanism can contract in the rectangle leads to the inslot when using, makes things convenient for the receiver to use more.

Further, the tool bit assembly comprises a tool bit body and a cutting blade, one end of the tool bit body is fixedly connected with the tool shank,

the cutter head comprises a cutter head body, a cutter head body is arranged in the cutter head body, the cutter head body is provided with a cutting blade mounting groove, the other end of the cutter head body is of a hemispherical structure, one end, close to the hemisphere, of the cutter head body is provided with a cutting blade mounting groove, the cutting blade mounting groove penetrates through the hemispherical end of the cutter head body, the cutting blade can be detachably mounted in the cutting blade mounting groove, and the diameter of the cutting blade is larger. Through set up the cutting blade mounting groove on the handle of a knife subassembly, through with the removable installation of cutting blade on the tool bit body, can directly dismantle the cutting piece and change after the cutting piece wearing and tearing or damage during the use, practice thrift cost of maintenance.

Further, the cutting blade is fixed with the cutter head body through a bolt. The cutting blade which can be conveniently fixed by the bolt is detachably arranged on the tool bit body, and the installation and the disassembly are convenient.

Furthermore, the cutter handle and the cutter head body are provided with communicated drainage grooves. Through setting up the escape trough, the escape trough can do benefit to the discharge of cutting piece.

Furthermore, a second rectangular through groove is formed in one end, close to the tool bit assembly, of the tool handle and penetrates through the end portion of the tool handle, the rectangular through groove is perpendicular to the second rectangular through groove, an installation block is arranged at one end, close to the tool handle, of the tool bit assembly, and the installation block group is inserted into the second rectangular through groove and fixed to the tool handle through bolts. Through setting up the second rectangle and leading to the groove to set up the installation piece on the tool bit, will install the piece and install in the second leads to the groove, can improve the stability of tool bit body installation.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1) the reducing mechanism is arranged between the cutter head and the cutter handle, one end of the reducing mechanism is movably connected with the cutter handle through the driving component, the other end of the reducing mechanism is movably connected with the cutter handle, the cutter handle is fixedly connected with the cutter head component, or the cutter handle and the cutter head component are integrally formed, the reducing mechanism is driven to move along the axis direction of the cutter handle through the driving component during use, the reducing mechanism is expanded or contracted outwards under the action of the driving component to realize reducing due to the other end of the reducing mechanism is movably connected with the cutter head component, after the cutting is carried out by the cutter head component during use, the reducing section of the reducing mechanism can further cut the aperture or the groove wall cut by the cutter head component through expansion to realize accurate cutting, and when the cutting with different requirements is carried out, the cutting diameter can be changed only after the reducing mechanism reaches the preset diameter, so that the cutting requirements can be used, the problem that a large number of milling cutters need to be prepared or non-standard machining needs to be carried out in machining is avoided.

2) This application leads to the groove through setting up the rectangle with reducing mechanism and tool bit unit mount in the groove through the rectangle, realizes fixing handle of a knife and tool bit unit, and the rectangle leads to the groove simultaneously and can hold reducing mechanism, and reducing mechanism can contract in the groove is led to the rectangle when using, makes things convenient for the receiver to use more.

3) This application is through setting up the cutting blade mounting groove on handle of a knife subassembly, through with the installation that the cutting blade can be dismantled on the tool bit body, can directly dismantle the cutting piece and change after cutting piece wearing and tearing or damage during the use, practices thrift cost of maintenance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of an embodiment of the present invention.

Fig. 3 is an enlarged schematic view of a position a of the embodiment of the present invention. Reference numbers and corresponding part names in the drawings:

1-a tool handle, 2-a driving block, 3-a driving arm, 4-a cutting arm, 5-a driving rod, 6-a first section, 7-a second section, 8-a third section, 9-a retainer ring clamping groove, 10-a hole, 11-a threaded hole, 13-a bearing, 14-a limiting table, 15-a rectangular through groove, 16-a second rectangular through groove, 17-a lug group, 18-a tool bit body, 19-a cutting blade, 20-a cutting blade mounting groove, 21-a drainage groove and 22-a mounting block.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Examples

As shown in fig. 1-3, a reducing ball-end milling cutter comprises a cutter handle 1, a cutter head assembly, a reducing mechanism and a driving assembly, wherein the cutter head assembly is fixedly connected with the cutter handle 1, one end of the reducing mechanism is movably connected with the cutter handle 1 through the driving mechanism, the other end of the reducing mechanism is movably connected with the cutter head assembly, and the driving mechanism drives the reducing mechanism to move towards the direction away from or close to the cutter handle 1, so that the reducing mechanism can be expanded or contracted. The reducing mechanism comprises a driving block 2, a driving arm 3 and a cutting arm 4, one end of the driving arm 3 is hinged to the driving block 2, the other end of the driving arm 3 is hinged to one end of the cutting arm 4, the other end of the cutting arm 4 is hinged to a cutter head assembly, the driving block 2 is movably connected with the cutter handle 1 through the driving assembly, and the driving mechanism drives the driving block 2 to move towards the direction far away from or close to the cutter handle 1. The driving mechanism comprises a driving rod 5, a hole 10 is formed in the axis of the cutter handle 1, the driving rod 5 is installed in the hole 10, the driving rod 5 can only rotate along the axis of the hole 10, threads are arranged at the end portion of the driving rod 5, a threaded hole 11 is formed in the driving block 2, and the end portion of the driving rod 5 is matched with the threaded hole 11 of the driving block 2 to movably connect the driving block 2 with the cutter handle 1. The tool handle is characterized by further comprising a retainer ring, the driving rod 5 comprises a first section 6, a second section 7 and a third section 8, the diameters of the first section 6, the second section 7 and the third section 8 are sequentially reduced, a retainer ring clamping groove 9 is formed in one side, close to the second section 7, of the third section 8, threads are arranged on the third section 8 of the driving rod 5, a limiting table 14 is arranged in the hole 10, one end, provided with the threads, of the driving rod 5 penetrates through the hole 10, the retainer ring is installed in the retainer ring clamping groove 9, the driving rod 5 can only be installed in the hole 10 in a rotating mode through the cooperation of the first section 6 and the retainer ring, and the driving block 2 is movably connected with the tool handle 1 through the cooperation of the third. Still include bearing 13, the inner circle cover of bearing 13 establish with on the second section 7 of actuating lever 5, the outer lane of bearing 13 with the inner wall laminating in hole 10. The utility model discloses a cutting tool, including handle 1, cutting arm 4, handle 1, one end that handle 1 is close to the tool bit subassembly is provided with rectangle through groove 15, and rectangle through groove 15 runs through the tip of handle 1, the tool bit subassembly is close to the one end of handle 1 sets up lug group 17, cutting arm 4 through the pivot with lug group 17 is articulated, lug group 17 inserts in rectangle through groove 15 pass through the bolt in handle 1 is fixed. The tool bit subassembly includes tool bit body 18 and cutting piece 19, tool bit body 18 one end with 1 fixed connection of handle of a knife, the other end is the semi-spherical structure, tool bit body 18 is close to hemispherical one end and is provided with cutting piece mounting groove 20, cutting piece mounting groove 20 runs through the hemispherical one end of tool bit body 18, cutting piece 19 removable install in cutting piece mounting groove 20, and cutting piece 19's diameter is greater than the tip of tool bit body 18 spherical structure. The cutting blade 19 is fixed to the bit body 18 by a bolt. The cutter handle 1 and the cutter head body 18 are provided with communicated drainage grooves 21. One end, close to the tool bit assembly, of the tool shank 1 is provided with a second rectangular through groove 16, the second rectangular through groove 16 penetrates through the end portion of the tool shank 1, the rectangular through groove 15 is perpendicular to the second rectangular through groove 16, one end, close to the tool shank 1, of the tool bit assembly is provided with a mounting block 22, and the mounting block 22 is inserted into the second rectangular through groove 16 and fixed to the tool shank 1 through bolts. The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a reducing ball end milling cutter, its characterized in that, includes handle of a knife (1), tool bit subassembly, reducing mechanism and drive assembly, the tool bit subassembly with handle of a knife (1) fixed connection, reducing mechanism's one end with handle of a knife (1) is through drive mechanism swing joint, the other end with tool bit subassembly swing joint, drive mechanism is through the drive reducing mechanism removes towards the direction of keeping away from or being close to handle of a knife (1), can let reducing mechanism expansion or shrink.

2. The reducing ball-end milling cutter according to claim 1, wherein the reducing mechanism comprises a driving block (2), a driving arm (3) and a cutting arm (4), one end of the driving arm (3) is hinged to the driving block (2), the other end of the driving arm (3) is hinged to one end of the cutting arm (4), the other end of the cutting arm (4) is hinged to the cutter head assembly, the driving block (2) is movably connected with the cutter handle (1) through the driving assembly, and the driving mechanism drives the driving block (2) to move towards the direction far away from or close to the cutter handle (1).

3. The reducing ball-end milling cutter according to claim 2, characterized in that the driving mechanism comprises a driving rod (5), the shank (1) is provided with a hole (10) along the axis of the shank (1), the driving rod (5) is installed in the hole (10), the driving rod (5) can only rotate along the axis of the hole (10), the end of the driving rod (5) is provided with a thread, the driving block (2) is provided with a threaded hole (11), and the end of the driving rod (5) is matched with the threaded hole (11) of the driving block (2) to movably connect the driving block (2) with the shank (1).

4. The variable diameter ball nose mill of claim 3, further comprising a retaining ring, the drive rod (5) comprises a first section (6), a second section (7) and a third section (8), and the diameters of the first section (6), the second section (7) and the third section (8) are reduced in sequence, one side of the third section (8) close to the second section (7) is provided with a retainer ring clamping groove (9), the third section (8) of the driving rod (5) is provided with threads, the hole (10) is internally provided with a limit table (14), the driving rod (5) is provided with a threaded end which passes through the hole (10), the retainer ring is arranged in the retainer ring clamping groove (9), the first section (6) is matched with the retainer ring to install the driving rod (5) in the hole (10) in a rotating way, the third section (8) of the driving rod (5) is matched with the threaded hole (11) of the driving block (2) to movably connect the driving block (2) with the knife handle (1).

5. The variable-diameter ball nose milling cutter according to claim 4, characterized by further comprising a bearing (13), wherein an inner ring of the bearing (13) is sleeved on the second section (7) of the driving rod (5), and an outer ring of the bearing (13) and the hole

(10) The inner wall of the tube is jointed.

6. The reducing ball-end milling cutter according to claim 2, wherein a rectangular through groove (15) is formed in one end, close to the cutter head assembly, of the cutter handle (1), the rectangular through groove (15) penetrates through the end portion of the cutter handle (1), a lug group (17) is formed in one end, close to the cutter handle (1), of the cutter head assembly, the cutting arm (4) is hinged to the lug group (17) through a rotating shaft, and the lug group (17) is inserted into the rectangular through groove (15) and fixed to the cutter handle (1) through a bolt.

7. The variable-diameter ball nose milling cutter according to claim 1 or 6, wherein the cutter head assembly comprises a cutter head body (18) and a cutting blade (19), one end of the cutter head body (18) is fixedly connected with the cutter handle (1), and the other end of the cutter head body is provided with a cutting edge (19)

The cutter head comprises a hemispherical structure, one end, close to the hemispherical shape, of the cutter head body (18) is provided with a cutting blade mounting groove (20), the cutting blade mounting groove (20) penetrates through the hemispherical end of the cutter head body (18), the cutting blade (19) can be detachably mounted in the cutting blade mounting groove (20), and the diameter of the cutting blade (19) is larger than the end part of the spherical structure of the cutter head body (18).

8. Variable diameter ball nose milling cutter according to claim 7, wherein the cutting blade (19) is secured to the cutter head body (18) by means of a bolt.

9. The variable diameter ball nose milling cutter according to claim 8, wherein the shank (1) and the cutter head body (18) are provided with communicating drainage grooves (21).

10. The reducing ball nose milling cutter according to claim 6, wherein a second rectangular through slot (16) is provided at an end of the shank (1) near the tool bit assembly, and the second rectangular through slot (16) penetrates through an end of the shank (1), the rectangular through slot (15) is perpendicular to the second rectangular through slot (16), and the tool bit assembly is near the shank

(1) The mounting block (22) is arranged at one end of the tool shank (1), and the mounting block (22) group is inserted into the second rectangular through groove (16) and fixed with the tool shank (1) through bolts.