CN211804043U

CN211804043U - Combined milling cutter for numerical control machine tool

Info

Publication number: CN211804043U
Application number: CN202020152587.9U
Authority: CN
Inventors: 肖永琪
Original assignee: Guiyang Ruixin Machining Co Ltd
Current assignee: Guiyang Ruixin Machining Co Ltd
Priority date: 2020-02-05
Filing date: 2020-02-05
Publication date: 2020-10-30
Anticipated expiration: 2030-02-05

Abstract

The utility model discloses a combined milling cutter for a numerical control machine tool, which comprises a mounting seat and a cutter head, wherein the inside of the mounting seat is provided with a through hole, the inside of the through hole is spliced with a fastening threaded rod, a cutter handle is spliced inside a fastening sleeve through the arranged fastening threaded rod and the fastening sleeve, the fastening threaded rod is screwed inside a first threaded hole of the cutter handle from one end of the mounting seat to realize the fixed installation of the cutter handle and the cutter head, meanwhile, limit keys arranged at the two ends of the fastening sleeve are matched with a first open slot on the cutter head, one ends of two sets of limit keys are slid into the second open slot, a positioning bolt is screwed into the second threaded hole to fix the two sets of limit keys, thereby avoiding the cutter head from rotating at high speed during the processing operation and being over-tightened with the fastening threaded rod, causing inconvenient disassembly during subsequent replacement and disassembly, and simultaneously fixing the cutter handle through the fastening threaded rod, the condition that the tool bit becomes flexible is also avoided.

Description

Combined milling cutter for numerical control machine tool

Technical Field

The utility model belongs to the technical field of milling cutter, concretely relates to modular milling cutter for digit control machine tool.

Background

A milling cutter is a rotating tool for milling machining having one or more cutter teeth. 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, formed surfaces, cut-off workpieces and the like on a milling machine. In order to ensure that a sufficiently high average chip thickness per tooth feed is used, the number of milling cutter teeth suitable for the process must be correctly determined for machining the plane on the horizontal milling machine. The cutter teeth are distributed on the circumference of the milling cutter and are divided into straight teeth and spiral teeth according to tooth profiles. In the numerical control machining process, the application of the numerical control machining tool is very important, and the machining efficiency, the quality and the production cost are directly influenced. For numerical control machining tools, the reliability of the connection between the tool body and the tool handle is very critical. At present, in the numerical control milling cutter, hot dress connected mode and threaded connection mode are comparatively common cutter body and handle of a knife connected mode, when installing through threaded connection mode, two kinds of circumstances appear easily under the high-speed rotatory circumstances of cutter, one kind appears threaded connection tension with connecting portion, lead to the unable lax of tool bit, inconvenient dismantlement, the not hard up circumstances can appear in another kind, two kinds of circumstances are unfavorable for the processing of cutter, therefore it is necessary to improve prior art to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modular milling cutter for digit control machine tool to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a combined milling cutter for a numerical control machine tool comprises a mounting seat and a cutter head, wherein a through hole is formed in the mounting seat, a fastening threaded rod is inserted in the through hole, an inner hexagon nut is fixedly arranged at one end of the fastening threaded rod, one end of the mounting seat is connected with a fastening sleeve through threads, a cutter handle is fixedly arranged at one end of the cutter head, a cutter handle is inserted in the fastening sleeve, a first threaded hole is formed in one end of the cutter handle, first open grooves are formed in the upper side and the lower side of one end of the fastening sleeve, a limiting block is fixedly arranged at one end of each of the two groups of first open grooves, limiting keys are slidably arranged in the two groups of first open grooves, a baffle is fixedly arranged at one end of, and the inside of two sets of second open slots is seted up the second screw hole, and two sets of second screw holes extend to the inside of tool bit.

Furthermore, the end, far away from hexagon socket cap nut, of the fastening threaded rod is provided with threads, and the threads are only arranged at one end of the fastening threaded rod, so that the fastening threaded rod is convenient to machine and manufacture.

Further, the diameter of tool bit is greater than the diameter of handle of a knife, and is right angle step structure at the junction of handle of a knife and tool bit, the diameter of tool bit is greater than fastening sleeve's hole diameter, when the fastening threaded rod revolves to twist and fixes the handle of a knife, and is inconsistent with fastening sleeve through right angle step department to it is fixed to form the centre gripping to the handle of a knife.

Furthermore, a plurality of groups of heat dissipation holes are formed in the cutting edge of the cutter head, so that good heat dissipation performance is provided for the cutter head when the cutter head rotates at a high speed, the chip removal groove is formed in one end of the cutter head, and metal chips are prevented from being cut and accumulated inside the cutter head.

Furthermore, the width of the first open slot is the same as that of the second open slot, so that the limit keys can be slidably mounted in the first open slot and the second open slot, and the length of the two groups of limit keys is the same as that of the two groups of first open slots.

Furthermore, two sets of positioning bolts penetrate through the two sets of limiting keys and extend into the second threaded holes.

Compared with the prior art, the beneficial effects of the utility model are that: this modular milling cutter for digit control machine tool, fastening threaded rod and fastening sleeve through setting up, peg graft the handle of a knife in fastening sleeve's inside, and with fastening threaded rod from the one end of mount pad screw up the first screw hole of handle of a knife soon inside, realize the fixed mounting to handle of a knife and tool bit, first second open slot on the spacing key cooperation tool bit that sets up at fastening sleeve both ends simultaneously, slide the one end of two sets of spacing keys to the inside of second open slot, and twist into the second screw hole with positioning bolt soon, fix two sets of spacing keys, thereby avoid the tool bit to rotate at a high speed when the processing operation, and it is too tight to twist soon to appear with fastening threaded rod, inconvenient dismantlement when leading to follow-up change dismantlement tool bit, fix the handle of a knife through fastening threaded rod simultaneously, also avoid the not hard up condition to appear in the.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is an overall front view of the present invention;

fig. 2 is a top view of the fastening sleeve and the tool bit of the present invention.

In the figure: 1. an inner hexagonal nut; 2. fastening a threaded rod; 3. a mounting seat; 4. a through hole; 5. fastening the sleeve; 6. a first threaded hole; 7. a limiting key; 8. a cutter head; 9. heat dissipation holes; 10. a chip groove; 11. a second threaded hole; 12. positioning the bolt; 13. a first open slot; 14. a limiting block; 15. a second open slot; 16. a baffle plate; 17. a knife handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a combined milling cutter for a numerical control machine tool comprises a mounting seat 3 and a cutter head 6, wherein a through hole 4 is formed in the mounting seat 3, a fastening threaded rod 2 is inserted in the through hole 4, an inner hexagon nut 1 is fixedly arranged at one end of the fastening threaded rod 2, one end of the mounting seat 3 is connected with a fastening sleeve 5 through threads, a cutter handle 17 is fixedly arranged at one end of the cutter head 8, a cutter handle 17 is inserted in the fastening sleeve 5, a first threaded hole 6 is formed in one end of the cutter handle 17, first open grooves 13 are formed in the upper side and the lower side of one end of the fastening sleeve 5, a limiting block 14 is fixedly arranged at one end of each of two groups of first open grooves 13, limiting keys 7 are arranged in the two groups of first open grooves 13 in a sliding mode, a baffle 16 is fixedly arranged at one end of each group of limiting keys 7, second open grooves 15 are formed, two sets of second threaded holes 11 extend into the interior of the cutter head 8.

As shown in fig. 1, the end of the fastening threaded rod 2 away from the hexagon socket nut 1 is provided with threads, and the threads are only arranged at one end, so that the processing and manufacturing of the fastening threaded rod 2 are convenient.

As shown in figure 1, the diameter of tool bit 8 is greater than the diameter of handle of a knife 17, and is right angle step structure in the junction of handle of a knife 17 and tool bit 8, and the diameter of tool bit 8 is greater than the hole diameter of fastening sleeve 5, when fastening threaded rod 2 revolves to twist and fixes handle of a knife 17, offsets with fastening sleeve 5 through right angle step department to form the centre gripping of handle of a knife 17 fixedly.

As shown in fig. 1, the cutting edge of the cutter head 8 is provided with a plurality of heat dissipation holes 9, so as to provide good heat dissipation performance for the cutter head 8 when the cutter head 8 rotates at a high speed, and one end of the cutter head 8 is provided with a chip removal groove 10, so as to prevent the cut metal chips from accumulating inside the cutter head 8.

As shown in fig. 2, the first opening grooves 13 and the second opening grooves 15 have the same width, so that the limiting keys 7 can be slidably installed inside the first opening grooves 13 and the second opening grooves 15, and the lengths of the two sets of limiting keys 7 are the same as the lengths of the two sets of first opening grooves 13.

As shown in fig. 1, two sets of limiting keys 7 are provided with positioning bolts 12 in a penetrating manner, and the two sets of positioning bolts 12 extend into the second threaded holes 11.

The utility model discloses a theory of operation and use flow: when the milling cutter for the combined numerical control machine tool is used, the fastening sleeve 5 is screwed and connected with the mounting seat 3, one end of the cutter handle 17 is inserted into the fastening sleeve 5, the limit keys 7 in the first open grooves 13 at two sides of the fastening sleeve 5 are pushed to one side, one ends of the two limit keys 7 are clamped in the second open grooves 15 of the cutter head 8 and screwed into the second threaded holes 11 through the positioning bolts 12, the limit keys 7 are fixed in the second open grooves 15, so that the cutter head 8 cannot rotate in the fastening sleeve 5 during processing, finally the fastening threaded rod 2 passes through the through hole 4 of the mounting seat 3 and is inserted into the first threaded hole 6, the inner hexagon nut 1 is screwed through a hexagon wrench, the fastening threaded rod 2 is screwed with the cutter handle 17, and right-angled steps are arranged at the positions of the cutter handle 17 and the cutter head 8, so that when the fastening threaded rod 2 is screwed, the pulling force towards two ends is provided for the cutter handle 17, thereby realize fixing the installation to handle of a knife 17, fix tool bit 8 through two sets of spacing keys 7 that set up, avoid tool bit 8 during operation to appear twisting too tightly with fastening threaded rod 2 in fastening sleeve 5 is inside, lead to the condition of inconvenient dismantlement.

It should be noted that, in this document, the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a modular milling cutter for digit control machine tool, includes mount pad (3) and tool bit (8), its characterized in that: a through hole (4) is formed in the mounting seat (3), a fastening threaded rod (2) is inserted into the through hole (4), an inner hexagon nut (1) is fixedly arranged at one end of the fastening threaded rod (2), one end of the mounting seat (3) is connected with a fastening sleeve (5) through threads, a knife handle (17) is fixedly arranged at one end of the knife head (8), a knife handle (17) is inserted into the fastening sleeve (5), a first threaded hole (6) is formed in one end of the knife handle (17), first open grooves (13) are formed in the upper side and the lower side of one end of the fastening sleeve (5), a limiting block (14) is fixedly arranged at one end of each of the two groups of first open grooves (13), a limiting key (7) is arranged in the two groups of first open grooves (13) in a sliding mode, and a baffle (16) is fixedly arranged at one end of the two groups, second open slot (15) have been seted up to both sides about the one end of tool bit (8), and two sets of second screw hole (11) have been seted up to the inside of second open slot (15), and two sets of second screw hole (11) extend to the inside of tool bit (8).

2. The milling cutter for combined numerical control machine tools according to claim 1, wherein: the one end that hexagon socket cap nut (1) was kept away from in fastening threaded rod (2) is provided with the screw thread, the diameter of tool bit (8) is greater than the diameter of handle of a knife (17), and is right angle stair structure at the junction of handle of a knife (17) and tool bit (8), the diameter of tool bit (8) is greater than the hole diameter of fastening sleeve (5).

3. The milling cutter for combined numerical control machine tools according to claim 1, wherein: a plurality of groups of heat dissipation holes (9) are formed in the cutting edge of the cutter head (8), and a chip removal groove (10) is formed in one end of the cutter head (8).

4. The milling cutter for combined numerical control machine tools according to claim 1, wherein: the width of the first open groove (13) is the same as that of the second open groove (15), and the length of the two groups of limiting keys (7) is the same as that of the two groups of first open grooves (13).

5. The milling cutter for combined numerical control machine tools according to claim 1, wherein: two sets of spacing keys (7) are gone up to run through and are provided with positioning bolt (12), and two sets of positioning bolt (12) extend to inside second screw hole (11).