Milling cutter with inner cooling structure

Abstract

The utility model discloses a milling cutter with an inner cooling structure, and belongs to the technical field of milling cutters. Comprising a handle and blades, the blades are installed at the lower end of the cutter handle through screws, a cooling liquid main channel is arranged on the lower portion in the cutter handle, the lower end of the cooling liquid main channel is communicated with a plurality of cooling liquid auxiliary channels, and the lower ends of the cooling liquid auxiliary channels are located in the middles of any two blades and located on the edge of the lower end of the cutter handle. The inner side of the sealing type bearing communicates with the cooling liquid main channel through the liquid inlet pipeline, the outer side of the sealing type bearing communicates with the cooling liquid pipe, and the cooling liquid main channel, the cooling liquid auxiliary channel, the sealing type bearing, the liquid inlet pipeline and the cooling liquid pipe are arranged, so that cooling liquid can enter the cutter handle, and the cooling liquid can be sprayed in front of the blade during milling; and therefore, the cooling liquid can be sprayed to a milling part, and the cooling effect of the workpiece and the blade is good during milling operation.

Description

Technical Field

[0001] The utility model provides a milling cutter with an internal cooling structure, belonging to the technical field of milling cutters. Background Art

[0002] A milling cutter is a multi-blade cutting tool, which is mainly used for milling workpieces on milling machines. It can perform various complex shape processing on workpieces, such as milling grooves, milling planes, milling contours, etc. There are various types of milling cutters, and their structures, sizes, blade shapes, materials, and coatings are different according to different processing requirements.

[0003] During the milling process, the milling cutter's blade will generate high temperature when cutting the milling part of the workpiece, and the sprayed coolant will flow to the milling part only after the milling cutter has milled, and it is difficult to directly enter the milling area for cooling. When the workpiece is milled at high speed, it cannot be cooled in time, which will cause hardening of the workpiece surface, which will affect the subsequent processing of the workpiece. Utility Model Content

[0004] The technical problem to be solved by the utility model is that currently the cooling liquid can only be sprayed onto the milled part after milling.

[0005] In order to solve the above problems, the utility model proposes a technical solution: a milling cutter with an internal cooling structure, comprising a tool handle and a plurality of blades; the plurality of blades are mounted to the lower end of the tool handle by screws, a main coolant channel is provided in the lower inner portion of the tool handle, the lower end of the main coolant channel is connected to a plurality of auxiliary coolant channels, the lower ends of the plurality of auxiliary coolant channels are respectively located in the middle of any two blades and at the edge of the lower end of the tool handle, a sealed bearing is provided on the outer side of the tool handle, the inner side of the sealed bearing is connected to the main coolant channel through a liquid inlet pipe, and the outer side of the sealed bearing is connected to the coolant pipe.

[0006] As an improvement, a mounting groove for mounting the blade is provided at the lower end of the knife handle, and a screw hole is provided in the middle of the mounting groove;

[0007] As an improvement, a screw hole is provided on the blade, and one end of the screw hole close to the outer side of the blade is face-faced;

[0008] As an improvement, the side surface and the lower end surface of the blade exceed the side surface and the lower end surface of the handle;

[0009] As an improvement, the upper end of the coolant main channel does not exceed the upper end of the liquid inlet pipe.

[0010] Beneficial effects of the utility model:

[0011] By arranging a main coolant channel, a secondary coolant channel, a sealed bearing, a liquid inlet pipe, and a coolant pipe, the coolant can enter the tool holder, so that during milling, the coolant can be sprayed in front of the blade, so that the coolant can be sprayed to the milling part, thereby achieving a good cooling effect on the workpiece and the blade during the milling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a milling cutter with an internal cooling structure according to the utility model;

[0013] Figure 2 This is an exploded view of a milling cutter with an internal cooling structure according to the utility model;

[0014] Figure 3 This is a cross-sectional view of a milling cutter with an internal cooling structure according to the utility model. Figure 1 ;

[0015] Figure 4 This is a cross-sectional view of a milling cutter with an internal cooling structure according to the utility model. Figure 2 .

[0016] 1. Tool handle; 2. Blade; 3. Screws; 4. Main coolant channel; 5. Secondary coolant channel; 6. Sealed bearing; 7. Liquid inlet pipe; 8. Coolant pipe; 9. Mounting slot; 10. Screw hole. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] according to Figure 1 —4: The utility model provides a milling cutter with an internal cooling structure: comprising a tool handle 1 and a plurality of blades 2; the plurality of blades 2 are mounted to the lower end of the tool handle 1 by means of screws 3; a main cooling liquid channel 4 is provided in the lower part of the tool handle 1; the lower end of the main cooling liquid channel 4 is connected to a plurality of auxiliary cooling liquid channels 5; the lower ends of the auxiliary cooling liquid channels 5 are respectively located in the middle of any two blades 2 and at the edge of the lower end of the tool handle 1; a sealed bearing 6 is provided on the outer side of the tool handle 1; the inner side of the sealed bearing 6 is connected to the main cooling liquid channel 4 through a liquid inlet pipe 7; the outer side of the sealed bearing 6 is connected to a cooling liquid pipe 8; by providing the main cooling liquid channel 4, the auxiliary cooling liquid channel 5, the sealed bearing 6, the liquid inlet pipe 7 and the cooling liquid pipe 8, the cooling liquid can enter the tool handle 1, so that during milling, the cooling liquid can be sprayed in front of the blade 2, so that the cooling liquid can be sprayed to the milling part, and thus during the milling operation, the cooling effect of the workpiece and the blade 2 is good;

[0019] according to Figure 2As shown: the lower end of the tool handle 1 is provided with a mounting groove 9 for mounting the blade 2, the middle of the mounting groove 9 is provided with a screw hole 10, the blade 2 is provided with a screw hole 10, and one end of the screw hole 10 close to the outer side of the blade 2 is flattened; in this way, the blade 2 can be mounted on the tool handle 1, and the bolt 3 will not protrude from the blade 2, thereby preventing the screw 3 from accidentally damaging the workpiece;

[0020] according to Figure 1 As shown: the side and lower end surface of the blade 2 exceed the side and lower end surface of the handle 1; thus, the blade 2 can mill the workpiece;

[0021] according to Figure 3 , 4 As shown: the upper end of the coolant main channel 4 does not exceed the upper end of the liquid inlet pipe 7; the coolant pipe 8 is connected to the outer ring of the sealed bearing 6, and the inner ring of the sealed bearing 6 is connected to the liquid inlet pipe 7. There is a gap between the ball of the sealed bearing 6 and the outer ring and inner ring of the sealed bearing 6. In this way, when the coolant enters the sealed bearing 6 through the coolant pipe 8, it can flow into the liquid inlet pipe 7 and then enter the coolant main channel 4, and the coolant will not flow back.

[0022] The principle of the utility model is as follows: when in use, first place the blade 2 on the mounting groove 9 of the shank 1, then use the bolt 3 to fix the blade 2, then install the upper part of the shank 1 on the milling machine, then connect the coolant pipe 8 to the cooling mechanism of the milling machine, then perform milling operation on the workpiece and start the cooling mechanism of the milling machine. When milling, the blade 2 will generate a lot of heat when milling the workpiece, and the cooling mechanism of the milling machine will transport the coolant to the coolant pipe 8, then pass through the sealed bearing 6, and then enter the coolant main channel 4 through the liquid inlet pipe 7, and finally flow through the coolant auxiliary channel 5 to the rear of the front blade 2 and the front of the rear blade 2 during rotation, so that the milling part of the workpiece can be cooled in the first time, thereby avoiding the hardening phenomenon on the workpiece surface.

[0023] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A milling cutter with an internal cooling structure, comprising a handle (1) and a plurality of blades (2); characterized in that: The plurality of blades (2) are mounted on the lower end of the shank (1) by means of screws (3); a main coolant channel (4) is provided in the lower inner portion of the shank (1); the lower end of the main coolant channel (4) is connected to a plurality of auxiliary coolant channels (5); the lower ends of the auxiliary coolant channels (5) are respectively located in the middle of any two blades (2) and at the edge of the lower end of the shank (1); a sealed bearing (6) is provided on the outer side of the shank (1); the inner side of the sealed bearing (6) is connected to the main coolant channel (4) via a liquid inlet pipe (7); and the outer side of the sealed bearing (6) is connected to a coolant pipe (8).

2. The milling cutter with an internal cooling structure according to claim 1, characterized in that: The lower end of the knife handle (1) is provided with a mounting groove (9) for mounting the blade (2), and a screw hole (10) is provided in the middle of the mounting groove (9).

3. The milling cutter with an internal cooling structure according to claim 1, characterized in that: The blade (2) is provided with a screw hole (10), and one end of the screw hole (10) close to the outer side of the blade (2) is faceted.

4. The milling cutter with an internal cooling structure according to claim 1, characterized in that: The side surface and the lower end surface of the blade (2) exceed the side surface and the lower end surface of the handle (1).

5. The milling cutter with an internal cooling structure according to claim 1, characterized in that: The upper end of the cooling liquid main channel (4) does not exceed the upper end of the liquid inlet pipe (7).

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