CN216882125U

CN216882125U - Thread milling cutter with inner cooling structure

Info

Publication number: CN216882125U
Application number: CN202123224791.0U
Authority: CN
Inventors: 赵伟; 王达娟
Original assignee: Changzhou Nagu Precision Tools Co ltd
Current assignee: Changzhou Nagu Precision Tools Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-07-05
Anticipated expiration: 2031-12-21

Abstract

The utility model discloses a thread milling cutter with an inner cooling structure, which comprises a cutter body, a cutter bar and a connecting seat. The utility model has the beneficial effects that: the blade adopts carbide material to make, improve blade hardness, increase the cutable application scope of cutter, side edge surface evenly distributed has the thread tooth, be convenient for carry out thread machining at the deep hole inner wall, the blade is four-blade flat head structure, four heliciform chip grooves have been seted up to blade surface correspondence, be convenient for clear up the waste material of cutting fast, the louvre has been seted up at blade cutting end face center, the louvre intussuseption is filled with the cooling wax, realize the rapid cooling to the cutter, avoid high temperature damage cutter, cutter arbor and connecting seat pass through the draw-in groove, fixture block and two interior cross bolts are detachable clamping connection, make things convenient for personnel to assemble or dismantle, four through-holes have evenly been seted up at the connecting seat edge, make the bolt pass the through-hole can be in the same place cutter and lathe stable equipment, and the atress is even, it is not hard up to avoid the cutter to produce during the use.

Description

Thread milling cutter with inner cooling structure

Technical Field

The utility model relates to a thread milling cutter, in particular to a thread milling cutter with an inner cooling structure, and belongs to the technical field of machining cutters.

Background

The traditional thread processing method mainly adopts a threading tool to turn threads or adopts a screw tap and a die to manually tap and thread, and with the development of numerical control processing technology, particularly the appearance of a three-axis linkage numerical control processing system, the more advanced thread processing mode, namely the numerical control milling of threads is realized, compared with the traditional thread processing mode, has great advantages in the aspects of processing precision and processing efficiency, is not limited by a thread structure and a thread turning direction during processing, for example, a thread milling cutter can process internal and external threads with different rotation directions, in addition, the durability of the thread milling cutter is ten times or even tens of times of that of a screw tap, and in the process of numerical control thread milling, the adjustment of the diameter size of the thread is very convenient, which is difficult to be realized by adopting a screw tap and a die, and due to the advantages of thread milling, the milling process is widely adopted in the mass thread production in the developed countries at present.

The existing thread milling cutter has a simple structure:

1) the surface of the cutter body is not provided with a chip groove, when the inner hole thread is machined, milled waste materials are accumulated in the hole, the workpiece and the cutter are easily abraded, and the cutter body frequently rubs against the workpiece during working, so that a large amount of heat is generated, the cutter which is at a high temperature for a long time is easily damaged, and the service life of the cutter body is further influenced;

2) the connecting seat is fixed with the cutter bar by welding, and the connecting seat is firm in connection, so that the cutter is inconvenient to replace and maintain in the later period, and a great deal of inconvenience exists during the use.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the above problems, and an object of the present invention is to provide a thread milling cutter with an internal cooling structure.

The utility model realizes the purpose through the following technical scheme: a thread milling cutter with an internal cooling structure comprises

The edge of the cutting end surface of the cutter body is uniformly distributed with four front blades, the surface of the cutter body is provided with four side blades which are in one-to-one correspondence with the front blades, and the milling of a workpiece is realized through the front blades and the side blades; and

the cutter bar is arranged at the rear end of the cutter body and is in an integrated structure with the cutter body; and

and the connecting seat is fixedly arranged on the outer end surface of the cutter bar through an inner cross bolt and can fixedly connect the cutter and the machine tool together in a rotating way.

As a still further scheme of the utility model: the outer diameter of the knife body is larger than that of the knife rod, and the knife body is made of hard alloy materials.

As a still further scheme of the utility model: the side edge is spiral, and thread teeth are uniformly distributed on the surface of the side edge.

As a still further scheme of the utility model: the blade is four-blade flat head structure, and four heliciform chip grooves have been seted up to the blade surface correspondence.

As a still further scheme of the utility model: the center of the cutting end face of the cutter body is provided with a heat dissipation hole, and cooling wax is filled in the heat dissipation hole.

As a still further scheme of the utility model: the cutter arbor outer end face symmetry is provided with two arc draw-in grooves, the draw-in groove bottom surface is equipped with the screw hole, the terminal surface correspondence is provided with two fixture blocks in the connecting seat, the counter bore that corresponds with the fixture block is seted up to the outer terminal surface of connecting seat, interior cross bolt passes counter bore and fixture block and threaded connection in the screw hole of draw-in groove in proper order, and cutter arbor and connecting seat pass through draw-in groove, fixture block and two interior cross bolts and be detachable clamping connection.

As a still further scheme of the utility model: four through holes are uniformly formed in the edge of the connecting seat.

The utility model has the beneficial effects that:

1) the cutter body is made of hard alloy materials, so that the hardness of the cutter body is improved, the cutting application range of the cutter is enlarged, thread teeth are uniformly distributed on the surface of a side edge, thread machining is conveniently carried out on the inner wall of a deep hole, the cutter body is of a four-edge flat head structure, four spiral chip grooves are correspondingly formed in the surface of the cutter body, cutting waste materials are conveniently and quickly cleaned, abrasion to the cutter caused by accumulation of waste chips is avoided, heat dissipation holes are formed in the center of the cutting end face of the cutter body, cooling wax is filled in the heat dissipation holes, quick cooling of the cutter is realized, and the cutter is prevented from being damaged by high temperature;

2) cutter arbor and connecting seat pass through draw-in groove, fixture block and two interior cross bolts and are detachable clamping connection, make things convenient for personnel to assemble or dismantle, and four through-holes have evenly been seted up at the connecting seat edge, make the bolt pass the through-hole can be in the same place cutter and lathe stable equipment, and the atress is even, avoids the cutter to produce not hard up during the use.

Drawings

FIG. 1 is a schematic view of a thread milling cutter according to the present invention;

FIG. 2 is a cutting end view of the blade of the present invention;

FIG. 3 is an outer end view of the toolholder of the subject invention;

FIG. 4 is a view of the inner end surface of the connecting base of the present invention;

fig. 5 is a view of the outer end surface of the connector holder of the present invention.

In the figure: 1. the cutter body, 2, the front edge, 3, the side edge, 4, the thread tooth, 5, the chip groove, 6, the louvre, 7, the cutter arbor, 8, the draw-in groove, 9, the screw hole, 10, the connecting seat, 11, the fixture block, 12, the counter bore, 13, interior cross bolt, 14, through-hole.

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 it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1 to 5, a thread milling cutter with an internal cooling structure includes

The edge of the cutting end surface of the cutter body 1 is uniformly distributed with four front blades 2, the surface of the cutter body is provided with four side blades 3 which are in one-to-one correspondence with the front blades 2, and the front blades 2 and the side blades 3 are used for milling a workpiece; and

the cutter bar 7 is arranged at the rear end of the cutter body 1 and is in an integrated structure with the cutter body 1; and

and the connecting seat 10 is fixedly arranged on the outer end surface of the cutter bar 7 through an inner cross bolt 13 and can fixedly connect the cutter and the machine tool together in a rotating mode.

In the embodiment of the utility model, the outer diameter of the cutter body 1 is larger than that of the cutter rod 7, and the cutter body 1 is made of hard alloy materials, so that the hardness of the cutter body 1 is improved, and the applicable range of the cutter for cutting is enlarged.

In the embodiment of the utility model, the side edge 3 is spiral, and the thread teeth 4 are uniformly distributed on the surface of the side edge 3, so that the thread machining on the inner wall of the deep hole is facilitated.

In the embodiment of the utility model, the cutter body 1 is of a four-edge flat-head structure, and four spiral chip grooves 5 are correspondingly formed in the surface of the cutter body 1, so that cutting waste materials can be conveniently and quickly cleaned, and the cutter is prevented from being abraded due to accumulation of the waste chips.

In the embodiment of the utility model, the center of the cutting end face of the cutter body 1 is provided with the heat dissipation hole 6, and the heat dissipation hole 6 is filled with cooling wax, so that the cutter is quickly cooled, and the cutter is prevented from being damaged by high temperature.

Example two

In the embodiment of the utility model, two arc-shaped clamping grooves 8 are symmetrically arranged on the outer end surface of the cutter bar 7, the bottom surface of each clamping groove 8 is provided with a threaded hole 9, two clamping blocks 11 are correspondingly arranged on the inner end surface of the connecting seat 10, counter bores 12 corresponding to the clamping blocks 11 are arranged on the outer end surface of the connecting seat 10, the inner cross bolts 13 sequentially penetrate through the counter bores 12 and the clamping blocks 11 and are in threaded connection with the threaded holes 9 of the clamping grooves 8, and the cutter bar 7 and the connecting seat 10 are in detachable clamping connection through the clamping grooves 8, the clamping blocks 11 and the two inner cross bolts 13, so that the assembly or disassembly of a worker is facilitated.

In the embodiment of the utility model, the edge of the connecting seat 10 is uniformly provided with four through holes 14, so that the cutter and the machine tool can be stably assembled together by passing a bolt through the through holes 14, the stress is uniform, and the cutter is prevented from loosening during use.

The working principle is as follows: when the thread milling cutter with the internal cooling structure is used, firstly, a cutter bar 7 and a connecting seat 10 are clamped together through a corresponding clamping groove 8 and a clamping block 11, then an internal cross bolt 13 sequentially penetrates through a counter bore 12 and the clamping block 11 and is connected in a threaded hole 9 of the clamping groove 8, then cooling wax is filled in a heat dissipation hole 6 in the center of the cutting end face of a cutter body 1, finally, the connecting seat 10 is fixedly installed on a machine tool through a bolt and a through hole 14, and then, a workpiece can be milled through a front edge 2 at the top end of the cutter body 1 and a side edge 3 on the surface of the cutter body, during the process, the inner hole thread machining of the workpiece by the cutter can be realized through thread teeth 4 uniformly distributed on the surface of the side edge 3, chip grooves 5 can be quickly cleaned, the abrasion of the cutter caused by accumulation of waste chips is avoided, and the cooling wax filled in the heat dissipation hole 6 can be quickly cooled to the cutter, so that the cutter is prevented from being damaged at high temperature, simultaneously, the used cutter bar 7 and the connecting seat 10 are fixed through two inner cross bolts 13, so that the connection is stable, and the cutter is convenient to disassemble, replace and maintain in the later period.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a thread milling cutter with interior cold junction constructs which characterized in that: comprises that

The edge of the cutting end surface of the cutter body (1) is uniformly distributed with four front blades (2), the surface of the cutter body is provided with four side blades (3) which correspond to the front blades (2) one by one, and the milling of a workpiece is realized through the front blades (2) and the side blades (3); and

the cutter bar (7) is arranged at the rear end of the cutter body (1) and is in an integrated structure with the cutter body (1); and

and the connecting seat (10) is fixedly arranged on the outer end surface of the cutter bar (7) through an inner cross bolt (13) and can fixedly connect the cutter and the machine tool together in a rotating mode.

2. A thread milling cutter with an internal cooling structure according to claim 1, wherein: the outer diameter of the knife body (1) is larger than that of the knife rod (7), and the knife body (1) is made of hard alloy materials.

3. A thread milling cutter with an internal cooling structure according to claim 1, wherein: the side edge (3) is spiral, and thread teeth (4) are uniformly distributed on the surface of the side edge (3).

4. A thread milling cutter with an internal cooling structure according to claim 1, wherein: the knife body (1) is of a four-edge flat head structure, and four spiral chip grooves (5) are correspondingly formed in the surface of the knife body (1).

5. A thread milling cutter with an internal cooling structure according to claim 1, wherein: the cutting tool is characterized in that a heat dissipation hole (6) is formed in the center of the cutting end face of the tool body (1), and cooling wax is filled in the heat dissipation hole (6).

6. A thread milling cutter with an internal cooling structure according to claim 1, wherein: the utility model discloses a cutter arbor (7) outer end face symmetry is provided with two arc draw-in grooves (8), draw-in groove (8) bottom surface is equipped with screw hole (9), the end correspondence is provided with two fixture blocks (11) in connecting seat (10), counter bore (12) that correspond with fixture block (11) are seted up to the outer end face of connecting seat (10), interior cross bolt (13) pass counter bore (12) and fixture block (11) and threaded connection in screw hole (9) of draw-in groove (8) in proper order, and cutter arbor (7) and connecting seat (10) are detachable clamping connection through draw-in groove (8), fixture block (11) and two interior cross bolt (13).

7. A thread milling cutter with an internal cooling structure according to claim 1, wherein: four through holes (14) are uniformly formed in the edge of the connecting seat (10).