CN210023807U

CN210023807U - Lathe tool with internal cooling structure

Info

Publication number: CN210023807U
Application number: CN201920905850.4U
Authority: CN
Inventors: 瞿涛
Original assignee: Sichuan Haoyuan Electromechanical Co Ltd
Current assignee: Sichuan Haoyuan Electromechanical Co Ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-02-07
Anticipated expiration: 2029-06-17

Abstract

The utility model discloses a turning tool with an internal cooling structure, which relates to the technical field of lathe tools and solves the problem that the internal cooling turning tool in the prior art can not cool a blade to cause a common cooling effect, the utility model comprises a tool handle and a tool bit, wherein the side surface of the lower part of the end of the tool bit is provided with a mounting groove, the blade is arranged in the mounting groove, the bottom of the mounting groove is provided with a mounting screw hole with a closed bottom, the tool bit is matched with the mounting screw hole through a hollow bolt, the inner wall of the hollow bolt is provided with a thread, the inner wall of the tool handle is provided with an axial inner cavity, a cooling shaft is arranged in the inner cavity, a liquid inlet channel and a liquid outlet channel are axially arranged in the cooling shaft, a liquid inlet cavity and a liquid outlet cavity which are respectively communicated with the liquid inlet channel and the liquid outlet channel correspondingly are arranged in the tool, the tail end of the hose is in threaded connection fit with the inner wall of the hollow bolt through an external thread sleeve.

Description

Lathe tool with internal cooling structure

Technical Field

The utility model relates to a lathe tool technical field, more specifically relate to a lathe tool with interior cooling structure.

Background

The lathe tool is one of the most important parts on the lathe, and the processing of the workpiece is completed through the lathe tool. The lathe tool can produce huge heat because of friction in carrying out the cutting process to the work piece, leads to the lathe tool temperature to rise sharply from this, and the lathe tool high temperature can influence the mechanical properties of self, and then all can be equipped with in the lathe and carry out cooling mechanism of cooling to the lathe tool. At present, the most conventional cooling mechanism sprays cooling liquid to a contact part of a turning tool blade and a workpiece through a cooling pipe provided with a nozzle to realize turning tool cooling. Although the cooling structure is simple, the manner of directly spraying the cooling liquid is obviously difficult to meet the practical requirement for some workpieces which cannot be directly contacted with the cooling liquid or some workpieces which need dry cutting processing, such as carbon fiber workpieces.

An internally-cooled turning tool has appeared in the prior art, and an internally-cooled structure is very simple, namely a cooling cavity is usually arranged in a tool shank of the turning tool and cooling liquid is introduced into the tool shank to cool the turning tool. However, in actual operation, the portion of the tool bit that has the highest temperature and needs to be cooled most is the tool bit, and more precisely the insert on the tool bit. Therefore, the current in-lathe tool cooling technology in the prior art cannot effectively cool the blade, so the cooling effect is not very ideal.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the internal cooling lathe tool among the prior art and can not cool off to the blade, lead to the general problem of cooling effect, the utility model provides a lathe tool with internal cooling structure.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the utility model provides a lathe tool with interior cooling structure, including handle of a knife and tool bit, the mounting groove has been seted up to the terminal lower part side of tool bit, install the blade in the mounting groove, bottom confined installation screw has been seted up to the mounting groove tank bottom, the tool bit passes through cavity bolt and installation screw cooperation, be provided with the screw thread on the cavity bolt inner wall, the inside axial inner chamber of having seted up of handle of a knife, be provided with the cooling shaft in the inner chamber, inlet channel and drain passage have been seted up to the inside axial of cooling shaft, inside respectively with inlet channel of seting up of tool bit, drain passage corresponds the feed liquor chamber and goes out the sap cavity of intercommunication, the feed liquor chamber is through seting up inside cooling channel and the installation screw bottom intercommunication of tool bit, the fixed hose that is provided.

Furthermore, a spiral cooling groove is formed in the surface of the cooling shaft, a liquid return cavity communicated with the liquid inlet cavity is formed in the inner wall, close to one end of the cutter head, of the inner cavity, the liquid return cavity is communicated with one end of the cooling groove, and the other end of the cooling groove is communicated with the liquid outlet channel through a liquid return channel formed in the cooling shaft.

Furthermore, the tool bit is internally provided with an adjusting screw hole which is vertical to the cooling channel and is communicated with the cooling channel, the diameter of the adjusting screw hole is directly the same as that of the cooling channel, and a flow adjusting bolt is arranged in the adjusting screw hole.

Furthermore, the cooling channel is divided into a vertical section and a horizontal section which are perpendicular to each other, the vertical section is communicated with the liquid inlet cavity, the horizontal section is communicated with the installation screw hole, and the axis of the adjusting screw hole and the axis of the vertical section are positioned on the same straight line.

Furthermore, the tail end of the cooling shaft, which is far away from the tool bit, is connected with a limiting block with the diameter larger than that of the cooling shaft, an inner cavity corresponding to the limiting block is provided with an expanding section capable of accommodating the expanding of the inner diameter of the limiting block, and a tool handle at the expanding section is connected with the limiting block through a fixing bolt.

The utility model has the advantages as follows:

the utility model discloses utilize the cooling shaft to carry the coolant liquid to the tool bit in to get into to the installation screw through cooling channel, and then cool off the blade, and utilize cavity bolt and hose to realize the circulation of coolant liquid. This is novel has not only realized the cooling to tool bit, blade to above cooling structure all designs according to the mounting structure of current blade, only set up with the installation screw in the cooling channel of intercommunication, replace ordinary bolt for the cavity bolt, do not change the mounting structure of blade, the overall structure of cutter, and then can be very easy going on to prior art's transformation.

Drawings

Fig. 1 is a schematic structural view (section view) of the present invention;

fig. 2 is a schematic structural view (external shape) of the present invention;

FIG. 3 is a left side view (in partial cross-section) of FIG. 2;

reference numerals: 1-tool bit, 2-liquid inlet cavity, 3-liquid outlet cavity, 4-liquid return cavity, 5-tool holder, 6-liquid inlet channel, 7-liquid outlet channel, 8-cooling shaft, 9-cooling groove, 10-inner cavity, 11-liquid return channel, 12-expanding section, 13-limiting block, 14-fixing bolt, 15-flow adjusting bolt, 16-adjusting screw hole, 17-mounting screw hole, 18-cooling channel, 18.1-horizontal section, 18.2-vertical section, 19-hose, 20-mounting groove, 21-hollow bolt, 22-external sleeve and 23-blade.

Detailed Description

For a better understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and the following embodiments.

Example 1

A turning tool with an internal cooling structure comprises a tool shank 5 and a tool bit 1, wherein a mounting groove 20 is formed in the side surface of the lower part of the tail end of the tool bit 1, a blade 23 is installed in the mounting groove 20, a mounting screw hole 17 with a closed bottom is formed in the bottom of the mounting groove 20, the tool bit 1 is matched with the mounting screw hole 17 through a hollow bolt 21, threads are arranged on the inner wall of the hollow bolt 21, an axial inner cavity 10 is formed in the tool shank 5, a cooling shaft 8 is arranged in the inner cavity 10, a liquid inlet channel 6 and a liquid outlet channel 7 are axially formed in the cooling shaft 8, the inner part, the liquid outlet channel 7 is correspondingly communicated with the liquid inlet cavity 2 and the liquid outlet cavity 3, the liquid inlet cavity 2 is communicated with the bottom of the mounting screw hole 17 through a cooling channel 18 arranged inside the tool bit 1, a hose 19 communicated with the liquid outlet cavity 3 is fixedly arranged on the tool bit 1, and the tail end of the hose 19 is in threaded connection and matching with the inner wall of the hollow bolt 21 through an outer sleeve 22.

The working principle is as follows: firstly, a cooling shaft 8 is installed in an inner cavity 10 of a cutter handle 5, cooling liquid is input through a liquid inlet channel 6, the cooling liquid enters a liquid inlet cavity 2 inside a cutter head 1 through the liquid inlet channel 6, then the cooling liquid enters an installation screw hole 17 through a cooling channel 18, the cooling liquid enters a hollow bolt 21 through the installation screw hole 17, at the moment, a blade 23 is cooled, then the cooling liquid enters a hose 19 connected with the hollow bolt 21, the cooling liquid enters a liquid outlet cavity 3 in the cutter head 1 through the hose 19, and finally the cooling liquid is discharged through a liquid outlet channel 7 communicated with the liquid outlet cavity 3.

The liquid inlet cavity 2 and the liquid outlet cavity 3 are relatively independent, the end face of the cooling shaft 8 and the end face of the cutter head 1 are in sealing contact with each other in a sealing manner, and the two are in plane contact, so that the sealing performance is difficult to grasp, and a sealing gasket can be arranged on the end face of the cooling shaft 8 to enhance the sealing performance. In practice, the cooling shaft 8 is fixed to the tool holder, and during installation, the tool holder 5 of the turning tool is sleeved on the cooling shaft 8 and is fixed relatively. The outer surface of the cooling shaft 8 is in close contact with the inner wall of the inner cavity 10.

When the cooling liquid flows through the blade 23, the cooling liquid and the blade 23 are separated by the hollow bolt 21, and further, if the cooling effect of the blade 23 needs to be further improved, a through hole can be formed in the hollow bolt 21 to enable the cooling liquid to be in direct contact with the blade 23, so that the cooling effect is enhanced.

Example 2

The embodiment is improved on the basis of embodiment 1:

the related cooling structure in embodiment 1 mainly cools the tool bit 1 and the blade 23, so to realize cooling of the tool holder 5, a spiral cooling groove 9 is disposed on the surface of the cooling shaft 8, a liquid return cavity 4 communicated with the liquid inlet cavity 2 is disposed on the inner wall of the inner cavity 10 near one end of the tool bit 1, the liquid return cavity 4 is communicated with one end of the cooling groove 9, and the other end of the cooling groove 9 is communicated with the liquid outlet channel 7 through a liquid return channel 11 disposed inside the cooling shaft 8. After the cooling liquid enters the liquid inlet cavity 2, a part of the cooling liquid enters the spiral cooling groove 9 through the liquid return cavity 4 and flows in the reverse direction, and when the cooling liquid flows along the cooling liquid groove, the cooling liquid is in direct contact with the inner wall of the inner cavity 10 and takes away the heat of the cutter handle 5, so that the cutter handle 5 is cooled. The cooling liquid finally enters the liquid outlet channel 7 inside the cooling shaft 8 through the liquid return channel 11 and is discharged.

In order to adjust the flow of the cooling liquid in the cooling channel 18, an adjusting screw hole 16 which is perpendicular to the cooling channel 18 and is communicated with the cooling channel 18 is arranged in the cutter head 1, the diameter of the adjusting screw hole 16 is directly the same as that of the cooling channel 18, and a flow adjusting bolt 15 is arranged in the adjusting screw hole 16. The circulation caliber of the cooling channel 18 is adjusted by adjusting the screwing degree of the flow adjusting bolt 16, so that the flow of the cooling liquid in the cooling channel 18 is adjusted to adapt to different working conditions.

Since the adjustment screw 16 must be kept perpendicular to the cooling channel 18 to facilitate the adjustment of the flow. According to the positional relationship between the liquid inlet chamber 2 and the mounting screw hole 17 in the drawing, if the cooling passage 18 is a straight line, it must be a straight line inclined downward, and thus it is difficult to operate in actually opening the hole. Therefore, in order to facilitate the opening of the adjusting screw hole 16, the cooling channel 18 is provided with a vertical section 18.2 and a horizontal section 18.1 which are perpendicular to each other, the vertical section 18.2 is communicated with the liquid inlet cavity 2, the horizontal section 18.1 is communicated with the mounting screw hole 17, and the axis of the adjusting screw hole 16 and the axis of the vertical section 18.2 are positioned on the same straight line. When the hole is opened, the hole is directly opened to the liquid inlet cavity 2 from bottom to top, the vertical section 18.2 and the adjusting screw hole 16 are opened, and then the horizontal section 18.1 is processed, so that the cooling channel 18 is conveniently opened.

The tail end of the cooling shaft 8, which is far away from the tool bit 1, is connected with a limiting block 13 with a diameter larger than that of the cooling shaft 8, the part, corresponding to the limiting block 13, of the inner cavity 10 is an expanding section 12 capable of accommodating the expanding of the inner diameter of the limiting block 13, and the tool shank 5 at the expanding section 12 is connected with the limiting block 13 through a fixing bolt 14. The limiting block 13 increases the outer diameter of the cooling shaft 8, so that the connection of the fixing bolt 14 is facilitated, particularly, a groove for accommodating the tail end of the fixing bolt 14 is conveniently formed, a little margin is reserved for forming the groove, and the cooling shaft 8 is prevented from being drilled through to the liquid inlet channel 6 and the liquid outlet channel 7 inside.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a lathe tool with interior cooling structure, includes handle of a knife (5) and tool bit (1), mounting groove (20) have been seted up to tool bit (1) terminal lower part side, install blade (23) in mounting groove (20), its characterized in that: a mounting screw hole (17) with a closed bottom is formed at the bottom of the mounting groove (20), the tool bit (1) is matched with the mounting screw hole (17) through a hollow bolt (21), threads are arranged on the inner wall of the hollow bolt (21), an axial inner cavity (10) is formed in the interior of the tool holder (5), a cooling shaft (8) is arranged in the inner cavity (10), a liquid inlet channel (6) and a liquid outlet channel (7) are axially formed in the cooling shaft (8), the tool bit (1) and the liquid inlet channel (6) are respectively formed in the interior of the tool bit, the liquid outlet channel (7) is correspondingly communicated with the liquid inlet cavity (2) and the liquid outlet cavity (3), the liquid inlet cavity (2) is communicated with the bottom of the mounting screw hole (17) through a cooling channel (18) arranged inside the tool bit (1), a hose (19) communicated with the liquid outlet cavity (3) is fixedly arranged on the tool bit (1), and the tail end of the hose (19) is in threaded connection fit with the inner wall of the hollow bolt (21) through an outer sleeve (22).

2. The turning tool with the internal cooling structure according to claim 1, wherein: the surface of the cooling shaft (8) is provided with a spiral cooling groove (9), the inner wall of one end of the inner cavity (10) close to the cutter head (1) is provided with a liquid return cavity (4) communicated with the liquid inlet cavity (2), the liquid return cavity (4) is communicated with one end of the cooling groove (9), and the other end of the cooling groove (9) is communicated with the liquid outlet channel (7) through a liquid return channel (11) arranged inside the cooling shaft (8).

3. The turning tool with the internal cooling structure according to claim 1, wherein: an adjusting screw hole (16) which is vertical to the cooling channel (18) and is communicated with the cooling channel is formed in the tool bit (1), the diameter of the adjusting screw hole (16) is directly the same as that of the cooling channel (18), and a flow adjusting bolt (15) is arranged in the adjusting screw hole (16).

4. The turning tool with the internal cooling structure according to claim 3, wherein: the cooling channel (18) is divided into a vertical section (18.2) and a horizontal section (18.1) which are perpendicular to each other, the vertical section (18.2) is communicated with the liquid inlet cavity (2), the horizontal section (18.1) is communicated with the installation screw hole (17), and the axis of the adjusting screw hole (16) and the axis of the vertical section (18.2) are positioned on the same straight line.

5. The turning tool with the internal cooling structure according to claim 1, wherein: the tail end of the cooling shaft (8) far away from the tool bit (1) is connected with a limiting block (13) with the diameter larger than that of the cooling shaft (8), an inner cavity (10) corresponding to the limiting block (13) is provided with an expanding section (12) capable of accommodating the expanding of the inner diameter of the limiting block (13), and a tool shank (5) at the expanding section (12) is connected with the limiting block (13) through a fixing bolt (14).