CN109352054B - Gear milling cutter with self-cooling lubricating structure - Google Patents

Gear milling cutter with self-cooling lubricating structure Download PDF

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Publication number
CN109352054B
CN109352054B CN201811497193.0A CN201811497193A CN109352054B CN 109352054 B CN109352054 B CN 109352054B CN 201811497193 A CN201811497193 A CN 201811497193A CN 109352054 B CN109352054 B CN 109352054B
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cooling
milling cutter
lubricating liquid
gear milling
lubricating
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CN109352054A (en
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王磊
张琼
赵纪元
卢秉恒
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Xian Jiaotong University
National Institute Corp of Additive Manufacturing Xian
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Xian Jiaotong University
National Institute Corp of Additive Manufacturing Xian
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C5/00Milling-cutters
    • B23C5/28Features relating to lubricating or cooling

Abstract

The invention particularly relates to a gear milling cutter with a self-cooling lubricating structure. The gear milling cutter comprises a cutter handle, a gear milling cutter body and a milling cutter blade; the milling cutter blades are multiple and are respectively arranged on the tooth parts of the gear milling cutter body; the cooling and lubricating liquid main channel and the plurality of cooling and lubricating liquid auxiliary channels are also included; the number of the cooling lubricating liquid auxiliary flow passages is consistent with that of the milling cutter blades; the cooling and lubricating liquid main flow channel is axially arranged in the tool shank; the plurality of secondary cooling and lubricating liquid channels are uniformly arranged in the gear milling cutter body along the circumference, the inlet of each secondary cooling and lubricating liquid channel is vertically communicated with the main cooling and lubricating liquid channel, and the outlet of each secondary cooling and lubricating liquid channel faces the milling cutter blade; the gear milling cutter body, the cooling lubricating liquid main runner and the cooling lubricating liquid auxiliary runner are machined and formed in a 3D printing mode. The gear milling cutter not only can enable cooling and lubricating liquid to uniformly act on a machining area, but also is remarkable in cooling effect and low in cooling cost.

Description

Gear milling cutter with self-cooling lubricating structure
Technical Field
The invention relates to a machining tool, in particular to a gear milling cutter with a self-cooling lubricating structure.
Background
The cutting process is mainly divided into the following steps according to the processing types: turning, drilling, milling, boring and grinding;
turning means changing the shape and size of a blank by utilizing the rotary motion of a workpiece and the linear motion or curvilinear motion of a cutter; drilling refers to a process method for processing holes on a workpiece by using a cutter; milling means that a blank is fixed, a rotary multi-edge cutter is used for feeding on the blank, and a workpiece is cut into a required shape and size; boring is a cutting process using a tool to enlarge a hole or other circular profile; grinding refers to a processing method for cutting off redundant materials on a workpiece by using an abrasive material, and belongs to the fine processing of mechanical processing;
the gear transmission is a device for transmitting motion and power by a gear pair, and is a mechanical transmission mode which is most widely applied in various modern equipment. Its advantages are high accuracy, efficiency and reliability, compact structure and long service life. The gear is used as a core component of gear transmission, the manufacturing precision of the gear seriously affects the efficiency and the result of the gear transmission, so the requirement on the machining precision of the gear is high, and the machining quality of the gear also affects the service life of the gear.
The gear machining mode mainly comprises the following steps: and machining modes such as gear milling, gear shaping and grinding, gear hobbing, gear shaving, gear shaping and the like. The method is suitable for single-piece small-batch production, the traditional milling process is divided into a dry processing mode and a wet processing mode, the dry processing mode usually influences the service life of the cutter due to the influence of processing temperature, the wet processing mode adopts a mode that a large amount of lubricating liquid is poured in a processing area, the lubrication and cooling of the cutter and the processed area are realized, the processing quality is improved, and the service life of the cutter is prolonged. However, in such a lubrication cooling method, each machining area to which the lubricating fluid cannot be uniformly cooled occurs, and a large amount of the lubricating fluid is used, which affects the ecological environment and the physical health of the operator, and increases the machining cost.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the gear milling cutter with the self-cooling lubricating structure, which has the advantages that the cooling lubricating liquid can uniformly act on a machining area, the cooling effect is obvious, and the cooling cost is low.
The basic principle of the invention is as follows:
based on the 3D printing technology, the main cooling lubricating liquid flow channel and the plurality of auxiliary cooling lubricating liquid flow channels are respectively manufactured in the tool shank and the gear milling cutter body in the gear milling process, so that the machining can be carried out at a proper temperature in the cutting edge process, and meanwhile, the cooling efficiency of the milling cutter in the gear milling process is greatly improved.
The specific technical scheme of the invention is as follows:
the invention provides a gear milling cutter with a self-cooling lubricating structure, which comprises a cutter handle, a gear milling cutter body and a milling cutter blade, wherein the cutter handle is provided with a cutting edge; the milling cutter blades are multiple and are respectively arranged on the tooth parts of the gear milling cutter body;
the improvement is as follows:
the cooling and lubricating liquid main channel and the plurality of cooling and lubricating liquid auxiliary channels are also included; the number of the cooling lubricating liquid auxiliary flow passages is consistent with that of the milling cutter blades;
the cooling and lubricating liquid main flow channel is axially arranged in the cutter handle and the gear milling cutter body;
the plurality of secondary cooling and lubricating liquid channels are uniformly arranged in the gear milling cutter body along the circumference, the inlet of each secondary cooling and lubricating liquid channel is vertically communicated with the main cooling and lubricating liquid channel, and the outlet of each secondary cooling and lubricating liquid channel faces the milling cutter blade;
the cutter handle, the gear milling cutter body, the cooling lubricating liquid main runner and the cooling lubricating liquid auxiliary runner are integrally formed in a 3D printing mode.
In order to improve the uniformity of the cooling lubricating liquid flowing out of each cooling lubricating liquid secondary flow channel, the gear milling cutter is also provided with a cooling lubricating liquid temporary storage area; the cooling lubricating liquid temporary storage area comprises a base body arranged in the gear milling cutter body, a plurality of holes are formed in the base body and communicated with the whole outer surface from the center of the base body, and the cooling lubricating liquid main flow channel and the plurality of cooling lubricating liquid secondary flow channels are communicated through the plurality of holes; the base body is formed in a 3D printing mode, and the material of the base body is consistent with that of the gear milling cutter body or the cutter handle.
Further, under the influence of 3D printing technology, in order to meet the requirement of smooth lubricating flow channels, the diameter of the main cooling and lubricating flow channel is 1mm-1.2mm, the diameter of the auxiliary cooling and lubricating flow channel is 0.5 mm-0.75 mm, and the diameter of the pore is smaller than that of the auxiliary cooling and lubricating flow channel.
Further, in order to further improve the cooling effect at the tool shank, the cooling and lubricating liquid main flow channel is spiral in shape.
Further, the milling cutter blades include outer blades installed at a position near the crests of the teeth, and inner blades installed at a position near the roots of the teeth; because the number of the cooling and lubricating liquid auxiliary channels is consistent with that of the milling cutter blades, and the outlet of each cooling and lubricating liquid auxiliary channel faces the milling cutter blades, correspondingly, under the structure of the inner milling cutter blades and the outer milling cutter blades, the plurality of cooling and lubricating liquid auxiliary channels are divided into an outer blade cooling and lubricating liquid auxiliary channel for cooling the outer blades and an inner blade cooling and lubricating liquid auxiliary channel for cooling the inner blades,
further, the milling cutter insert is fixedly mounted on the tooth portion by means of screwing or welding.
Meanwhile, the invention also provides a numerical control milling machine which comprises a cutter handle clamping part with an internal cooling flow channel, wherein the gear milling cutter is arranged on the cutter handle clamping part, and a main flow channel of cooling lubricating liquid in the gear milling cutter is communicated with the internal cooling flow channel on the cutter handle clamping part.
In addition, the invention also provides a split type structure of the cutter handle and the cutter body of the gear milling cutter, and the specific structure comprises the cutter handle, a gear milling cutter body and a milling cutter blade; the milling cutter blades are multiple and are respectively arranged on the tooth parts of the gear milling cutter body; the gear milling cutter body is provided with a step through hole along the central axis, the cutter handle is inserted in the small diameter hole of the step through hole, and a screw penetrates through the large diameter hole of the step through hole and is in threaded connection with the vibration reduction cutter handle, so that a closed cavity is formed among the cutter handle, the large diameter hole of the gear milling cutter body and the screw;
a main cooling and lubricating liquid flow passage is arranged in the tool shank and is axially arranged; a plurality of first intermediate cooling lubricating liquid flow channels for communicating the cooling lubricating liquid main flow channel with the cavity are also arranged in the tool shank;
the gear milling cutter body is internally provided with a second intermediate cooling lubricating liquid flow passage, a plurality of cooling lubricating liquid auxiliary flow passages and a cooling lubricating liquid temporary storage area arranged between the second intermediate cooling lubricating liquid flow passage and the plurality of cooling lubricating liquid auxiliary flow passages;
at least one second intermediate cooling lubricating liquid flow passage is communicated with the cavity;
the number of the cooling and lubricating liquid auxiliary channels is consistent with that of the milling cutter blades, the inlet of each cooling and lubricating liquid auxiliary channel is communicated with the cooling and lubricating liquid temporary storage area, and the outlet of each cooling and lubricating liquid auxiliary channel faces the milling cutter blades;
the cooling lubricating liquid temporary storage area comprises a base body arranged in the gear milling cutter body, and a plurality of pores are formed in the base body and communicated from the center to the whole outer surface of the base body;
the gear milling cutter body, the cooling lubricating liquid main flow channel, the first intermediate cooling lubricating liquid flow channel, the second intermediate cooling lubricating liquid flow channel, the base body and the cooling lubricating liquid auxiliary flow channel are all formed in a 3D printing mode in a machining mode.
Further, under the influence of 3D printing technology, in order to meet the requirement of smooth lubricating flow channels, the diameter of the main cooling and lubricating flow channel is 1mm-1.2mm, the diameter of the auxiliary cooling and lubricating flow channel is 0.5 mm-0.75 mm, and the diameter of the pore is smaller than that of the auxiliary cooling and lubricating flow channel.
Further, in order to further improve the cooling effect at the tool shank, the cooling and lubricating liquid main flow channel is spiral in shape.
Further, the milling cutter blades include outer blades installed at a position near the crests of the teeth, and inner blades installed at a position near the roots of the teeth; because the number of the cooling and lubricating liquid auxiliary channels is consistent with that of the milling cutter blades, and the outlet of each cooling and lubricating liquid auxiliary channel faces the milling cutter blades, correspondingly, under the structure of the inner milling cutter blades and the outer milling cutter blades, the plurality of cooling and lubricating liquid auxiliary channels are divided into an outer blade cooling and lubricating liquid auxiliary channel for cooling the outer blades and an inner blade cooling and lubricating liquid auxiliary channel for cooling the inner blades,
further, the milling cutter insert is fixedly mounted on the tooth portion by means of screwing or welding.
Meanwhile, the invention also provides a numerical control milling machine which comprises a cutter handle clamping part with an internal cooling flow channel, wherein the gear milling cutter is arranged on the cutter handle clamping part, and a main flow channel of cooling lubricating liquid in the gear milling cutter is communicated with the internal cooling flow channel on the cutter handle clamping part.
The invention has the beneficial effects that:
1. the invention adopts the 3D printing technology to manufacture the integrated gear milling cutter, and the cooling and lubricating mechanism which is internally provided with the main cooling and lubricating liquid channel and the plurality of auxiliary cooling and lubricating liquid channels is respectively arranged in the integrated gear milling cutter, so that the cooling and lubricating cost in the gear milling processing process is reduced, the cooling and lubricating mechanism is uniformly cooled, the cooling effect is obvious, and the environmental pollution in the cooling and lubricating process is reduced.
2. The temporary storage area for the cooling lubricating liquid is arranged in the integrated gear milling cutter, so that the cooling lubricating liquid can be temporarily stored in the position before the cutter is ready to be machined, the cooling lubricating liquid can uniformly flow out through the auxiliary cooling lubricating liquid flow channels under the action of pressure and centrifugal force after the cutter starts to be machined, the flow of the cooling lubricating liquid flowing out of each auxiliary cooling lubricating liquid flow channel is consistent, the cooling uniformity is further improved, and the cooling effect is ensured.
3. The split gear milling cutter can meet the milling requirement scenes of gears with different modulus, and the temporary storage area of the cooling lubricating liquid is directly arranged in the cutter body of the gear milling cutter, so that the cooling lubricating liquid flowing out of the auxiliary flow channel of the cooling lubricating liquid is more uniform, and the quality of the cutter body of the gear milling cutter is reduced under the condition of ensuring that the integral strength of the cutter body of the gear milling cutter is not changed.
4. The main flow channel of the cooling and lubricating liquid is designed into a spiral shape, and the cooling area at the position of the tool shank is increased, so that the influence of heat generated by machining on the tool shank and parts matched with the tool shank is extremely small, and the service lives of the tool and the parts matched with the tool shank are ensured.
5. When the milling cutter blade is provided with the structure combining the outer blade and the inner blade, the cooling lubricating liquid auxiliary flow passage can be set as the outer blade cooling lubricating liquid auxiliary flow passage and the inner blade cooling lubricating liquid auxiliary flow passage, and the cooling lubricating liquid directly acts on the outer blade and the inner blade in a targeted manner, so that the cooling effect is better.
Drawings
FIG. 1 is a schematic view of the integrated gear milling cutter of embodiment 1 without a coolant lubricant buffer.
FIG. 2 is a schematic structural diagram of a temporary cooling lubricant storage area of the integrated gear milling cutter of embodiment 1.
FIG. 3 is a structural view of the flow of a plurality of cooling lubricant sub-circuits in example 1;
fig. 4 is a schematic structural view of the split-type gear milling cutter of embodiment 2.
FIG. 5 is a structural view of the flow of a plurality of cooling lubricant sub-circuits in example 2;
the reference numbers are as follows:
1-main cooling lubricating liquid flow channel, 2-auxiliary cooling lubricating liquid flow channel, 21-auxiliary outer blade cooling lubricating liquid flow channel, 22-auxiliary inner blade cooling lubricating liquid flow channel, 3-temporary cooling lubricating liquid storage area, 31-substrate and 4-chamber
01-knife handle, 02-gear milling cutter body, 03-milling cutter blade, 031-outer blade, 032-inner blade.
Detailed Description
The gear milling cutter according to the present invention will be further described with reference to two embodiments and the accompanying drawings.
Example 1 (one-piece Structure)
As shown in fig. 1 to 3, a gear milling cutter with a self-cooling lubricating structure comprises a cutter handle 01, a gear milling cutter body 02 and a milling cutter blade 03; the milling cutter blades 03 are multiple and are respectively arranged on the tooth parts of the gear milling cutter body 02; the cooling and lubricating liquid main channel 1 and a plurality of cooling and lubricating liquid auxiliary channels 2 are also included; the number of the cooling and lubricating liquid auxiliary flow passages 2 is consistent with that of the milling cutter blades 03; the cooling and lubricating liquid main flow channel 1 is axially arranged in the tool shank 01; the multiple cooling and lubricating liquid auxiliary channels 2 are uniformly arranged in the gear milling cutter body 02 along the circumference, the inlet of each cooling and lubricating liquid auxiliary channel 2 is vertically communicated with the cooling and lubricating liquid main channel 1, and the outlet of each cooling and lubricating liquid auxiliary channel 2 faces the milling cutter blade 03; the gear milling cutter body 02, the cooling lubricating liquid main runner 1 and the cooling lubricating liquid auxiliary runner 2 are all formed in a 3D printing mode.
During operation, cooling and lubricating liquid enters through the cooling and lubricating liquid main flow channel and flows to the milling cutter blade from the plurality of cooling and lubricating liquid auxiliary flow channels, and cooling and lubricating of the milling cutter blade are achieved.
The embodiment has further optimized design:
1. the gear milling cutter is also provided with a cooling lubricating liquid temporary storage area 3; the cooling lubricating liquid temporary storage area 3 comprises a base body 31 arranged in the gear milling cutter body 02 or the cutter handle 01, a plurality of holes are formed in the base body 31 and communicated with the whole outer surface from the center of the base body, and the cooling lubricating liquid main flow passage 1 and the plurality of cooling lubricating liquid auxiliary flow passages 2 are communicated through the plurality of holes; the base body is formed in a 3D printing mode, and the material of the base body is consistent with that of the gear milling cutter body or the cutter handle. The cooling lubricating liquid flows to the cooling lubricating liquid temporary storage area through the cooling lubricating liquid main runner, so that the cooling lubricating liquid can be temporarily stored in the position before the cutter is prepared to mill teeth, and the gear milling cutter starts to mill teeth, and then the cooling lubricating liquid can flow to the milling cutter blades through the plurality of cooling lubricating liquid auxiliary runners under the action of pressure and centrifugal force, so that cooling and lubrication are realized. The purpose of this design is: 1. the flow of the cooling lubricating liquid flowing out from the plurality of cooling lubricating liquid auxiliary runners is more uniform, and the cooling effect is improved. 2. Reducing the mass of the tool.
2. In addition, due to the limitation of 3D printing manufacturing technology, the diameter of the cooling and lubricating auxiliary channel 2 is 0.5mm to 0.75mm, and in addition, due to the influence of the aperture size of the cooling channel in the clamping part of the conventional tool holder, in order to ensure the outlet pressure of the cooling and lubricating liquid and ensure that the cooling and lubricating liquid can act on a machining area, the diameter of the main channel of the cooling and lubricating liquid should be controlled within 1.2 mm. The specific dimension is determined by the difference of the processing amount and the generated heat under different diameters during processing.
3. In order to further avoid that the heat of the tool bit is transferred to the tool holder or other parts connected with the tool holder in the machining process to cause damage to the tool or other parts, the cooling and lubricating liquid main flow channel 1 is arranged in a spiral shape to increase the cooling area and improve the cooling efficiency.
4. The milling cutter blades 03 of the gear milling cutter can also be designed in a combined form of outer blades 031 and inner blades 032, the outer blades 031 are installed at positions close to the tooth tips of the teeth, and the inner blades 032 are installed at positions close to the tooth roots of the teeth; the number of the cooling and lubricating liquid auxiliary channels 2 is consistent with that of the milling cutter blades 03, and the outlet of each cooling and lubricating liquid auxiliary channel 2 faces the milling cutter blades 03; correspondingly, in the structure of the inner and outer milling cutter blades, the cooling of the outer cutter blade 031 depends on the outer cutter blade cooling lubricating liquid auxiliary flow passage 21, and the cooling of the inner cutter blade 032 depends on the inner cutter blade cooling lubricating liquid auxiliary flow passage 22.
The gear milling cutter provided by the invention adopts a 3D printing technology during manufacturing, and mainly comprises the following steps:
【1】 Carrying out three-dimensional modeling design on the cutter handle and the gear milling cutter body by using three-dimensional modeling software;
【2】 Designing and optimizing parameters of the cooling and lubricating liquid main flow channel and the plurality of cooling and lubricating liquid auxiliary flow channels by utilizing fluid simulation software; the flow of the lubricating cooling liquid in the lubricating cooling flow channel in the machining process of the cutter is ensured to meet the integral cooling requirement of the cutter, and the lubricating cooling liquid can be smoothly conveyed to a machining area;
【3】 Adopt section processing software to carry out the layering section to the model of handle of a knife and gear milling cutter body and handle to add the support to the lubricated liquid temporary storage area of cooling, when guaranteeing the whole rigidity of rotating base member, lubricated coolant liquid can get into smoothly, flow the temporary storage area, and the back is leading-in to 3D printing apparatus in, utilizes 3D printing technique to make the rotating base member.
【4】 And then the milling cutter blade is arranged on each tooth part of the gear milling cutter body in a screw or welding mode.
Example 2 (Split type structure)
As shown in fig. 4 and 5, a gear milling cutter with a self-cooling lubrication structure includes a shank 01, a gear milling cutter body 02, and a milling cutter blade 03; the milling cutter blades 03 are multiple and are respectively arranged on the tooth parts of the gear milling cutter body 02; the gear milling cutter comprises a gear milling cutter body 02, a cutter handle 01 and a screw 05, wherein the gear milling cutter body 02 is provided with a step through hole 04 along a central axis, the cutter handle 01 is inserted into a small-diameter hole of the step through hole 04, and the screw 05 penetrates through a large-diameter hole of the step through hole 04 and is in threaded connection with the cutter handle 01, so that a closed cavity 4 is formed among the cutter handle 01, the large-diameter hole of the gear milling cutter body 02 and the screw 05;
a cooling and lubricating liquid main flow channel 1 is arranged in the tool shank 01 and is arranged along the axial direction; a plurality of first intermediate cooling and lubricating liquid flow passages 5 for communicating the cooling and lubricating liquid main flow passage 1 with the cavity 4 are also arranged in the cutter handle 01;
the gear milling cutter body 02 comprises a second intermediate cooling lubricating liquid flow passage 6, a plurality of cooling lubricating liquid auxiliary flow passages 5 and a cooling lubricating liquid temporary storage area 3 arranged between the second intermediate cooling lubricating liquid flow passage 6 and the plurality of cooling lubricating liquid auxiliary flow passages 2;
at least one (4 in the figure) second intermediate cooling lubricating fluid flow passage 6 is communicated with the chamber 5;
the number of the cooling and lubricating liquid auxiliary channels 6 is consistent with that of the milling cutter blades 03, the inlet of each cooling and lubricating liquid auxiliary channel 6 is communicated with the cooling and lubricating liquid temporary storage area 3, and the outlet of each cooling and lubricating liquid auxiliary channel 6 faces the milling cutter blades 3;
the cooling lubricating liquid temporary storage area 3 comprises a base body 31 arranged in the gear milling cutter body 02, and a plurality of pores are formed in the base body 31 and communicated from the center to the whole outer surface;
the gear milling cutter body 02, the cooling lubricating liquid main flow channel 1, the first intermediate cooling lubricating liquid flow channel 5, the second intermediate cooling lubricating liquid flow channel 6, the base 31 and the cooling lubricating liquid auxiliary flow channel 2 are all formed in a 3D printing mode in a machining mode.
When the cooling and lubricating device works, cooling and lubricating liquid enters through the cooling and lubricating liquid main flow channel and flows to the milling cutter blade through the first intermediate cooling and lubricating flow channel, the cavity, the second intermediate cooling and lubricating flow channel, the base body and the plurality of cooling and lubricating liquid auxiliary flow channels in sequence, and cooling and lubricating of the milling cutter blade are achieved.
The embodiment has further optimized design:
1. in addition, due to the limitation of 3D printing manufacturing technology, the diameter of the cooling and lubricating auxiliary channel 2 is 0.5mm to 0.75mm, and in addition, due to the influence of the aperture size of the cooling channel in the clamping part of the conventional tool holder, in order to ensure the outlet pressure of the cooling and lubricating liquid and ensure that the cooling and lubricating liquid can act on a machining area, the diameter of the main channel of the cooling and lubricating liquid should be controlled within 1.2 mm. The specific dimension is determined by the difference of the processing amount and the generated heat under different diameters during processing.
2. In order to further avoid that the heat of the tool bit is transferred to the tool holder or other parts connected with the tool holder in the machining process to cause damage to the tool or other parts, the cooling and lubricating liquid main flow channel 1 is arranged in a spiral shape to increase the cooling area and improve the cooling efficiency.
3. The milling cutter blades 03 of the gear milling cutter can also be designed in a combined form of outer blades 031 and inner blades 032, the outer blades 031 are installed at positions close to the tooth tips of the teeth, and the inner blades 032 are installed at positions close to the tooth roots of the teeth; the number of the cooling and lubricating liquid auxiliary channels 2 is consistent with that of the milling cutter blades 03, and the outlet of each cooling and lubricating liquid auxiliary channel 2 faces the milling cutter blades 03; correspondingly, in the structure of the inner and outer milling cutter blades, the cooling of the outer cutter blade 031 depends on the outer cutter blade cooling lubricating liquid auxiliary flow passage 21, and the cooling of the inner cutter blade 032 depends on the inner cutter blade cooling lubricating liquid auxiliary flow passage 22.
The manufacturing of the gear milling cutter of the embodiment mainly comprises the following steps:
【1】 A cooling lubricating liquid main flow channel and a first intermediate cooling lubricating liquid flow channel are arranged in the cutter handle in a stamping mode;
【2】 Carrying out three-dimensional modeling design on the gear milling cutter body by using three-dimensional modeling software;
【3】 Designing and optimizing parameters of the second intermediate cooling lubricating liquid flow channel and the cooling lubricating liquid auxiliary flow channel by using fluid simulation software; the flow of the lubricating cooling liquid in the lubricating cooling flow channel in the machining process of the cutter is ensured to meet the integral cooling requirement of the cutter, and the lubricating cooling liquid can be smoothly conveyed to the cutting machining area of the cutter;
【4】 The method comprises the steps of carrying out layered slicing processing on a face milling cutter body model by adopting slicing processing software, adding support to a cooling and lubricating liquid temporary storage region, ensuring the integral rigidity of the gear milling cutter body, enabling lubricating and cooling liquid to smoothly enter and flow out of the temporary storage region, guiding the lubricating and cooling liquid into 3D printing equipment, and manufacturing the gear milling cutter body by utilizing a 3D printing technology.
【5】 And the cutter handle and the gear milling cutter body are fixedly assembled through screws.

Claims (12)

1. A gear milling cutter with a self-cooling lubricating structure comprises a cutter handle, a gear milling cutter body and a milling cutter blade; the milling cutter blades are multiple and are respectively arranged on the tooth parts of the gear milling cutter body;
the method is characterized in that:
the cooling and lubricating liquid main channel and the plurality of cooling and lubricating liquid auxiliary channels are also included; the number of the cooling lubricating liquid auxiliary flow passages is consistent with that of the milling cutter blades;
the cooling and lubricating liquid main flow channel is axially arranged in the cutter handle and the gear milling cutter body;
the plurality of secondary cooling and lubricating liquid channels are uniformly arranged in the gear milling cutter body along the circumference, the inlet of each secondary cooling and lubricating liquid channel is communicated with the main cooling and lubricating liquid channel, and the outlet of each secondary cooling and lubricating liquid channel faces the milling cutter blade;
the cutter handle, the gear milling cutter body, the cooling lubricating liquid main runner and the cooling lubricating liquid auxiliary runner are integrally formed in a 3D printing mode;
the gear milling cutter also comprises a cooling lubricating liquid temporary storage area; the cooling lubricating liquid temporary storage area comprises a base body arranged in the gear milling cutter body, a plurality of holes are formed in the base body and communicated with the whole outer surface from the center of the base body, a main cooling lubricating liquid flow channel and a plurality of secondary cooling lubricating liquid flow channels are communicated through the plurality of holes, and the diameter of each hole is smaller than that of each secondary cooling lubricating liquid flow channel; the base body is formed in a 3D printing mode, and the material of the base body is consistent with that of the gear milling cutter body or the cutter handle.
2. The gear milling cutter with the self-cooling lubricating structure according to claim 1, wherein: the diameter of the main cooling and lubricating flow passage is 1mm-1.2mm, and the diameter of the secondary cooling and lubricating flow passage is 0.5 mm-0.75 mm.
3. The gear milling cutter with the self-cooling lubricating structure according to claim 2, wherein: the cooling and lubricating liquid main flow channel is spiral in shape.
4. The gear milling cutter with the self-cooling lubricating structure according to claim 3, wherein: the milling cutter blade comprises an outer blade and an inner blade, wherein the outer blade is arranged close to the tooth crest position of the tooth part, the inner blade is arranged close to the tooth root position of the tooth part, and correspondingly, a plurality of cooling and lubricating liquid auxiliary channels are divided into outer blade cooling and lubricating liquid auxiliary channels for cooling the outer blade and inner blade cooling and lubricating liquid auxiliary channels for cooling the inner blade.
5. The gear milling cutter with the self-cooling lubricating structure according to claim 4, wherein: the milling cutter blade is fixedly mounted on the tooth part in a screw connection or welding mode.
6. A numerically controlled milling machine comprising a shank holding portion having an internal cooling flow passage, the shank holding portion having mounted thereon a gear milling cutter according to claim 5, the main flow passage of cooling lubricant in the gear milling cutter communicating with the internal cooling flow passage in the shank holding portion.
7. A gear milling cutter with a self-cooling lubricating structure comprises a cutter handle, a gear milling cutter body and a milling cutter blade; the milling cutter blades are multiple and are respectively arranged on the tooth parts of the gear milling cutter body;
the method is characterized in that:
the gear milling cutter body is provided with a step through hole along the central axis, the cutter handle is inserted in the small diameter hole of the step through hole, and a screw penetrates through the large diameter hole of the step through hole and is in threaded connection with the vibration reduction cutter handle, so that a closed cavity is formed among the cutter handle, the large diameter hole of the gear milling cutter body and the screw;
a main cooling and lubricating liquid flow passage is arranged in the tool shank and is axially arranged; a plurality of first intermediate cooling lubricating liquid flow channels for communicating the cooling lubricating liquid main flow channel with the cavity are also arranged in the tool shank;
the gear milling cutter body is internally provided with a second intermediate cooling lubricating liquid flow passage, a plurality of cooling lubricating liquid auxiliary flow passages and a cooling lubricating liquid temporary storage area arranged between the second intermediate cooling lubricating liquid flow passage and the plurality of cooling lubricating liquid auxiliary flow passages;
at least one second intermediate cooling lubricating liquid flow passage is communicated with the cavity;
the number of the cooling and lubricating liquid auxiliary channels is consistent with that of the milling cutter blades, the inlet of each cooling and lubricating liquid auxiliary channel is communicated with the cooling and lubricating liquid temporary storage area, and the outlet of each cooling and lubricating liquid auxiliary channel faces the milling cutter blades;
the cooling and lubricating liquid temporary storage area comprises a base body arranged in the gear milling cutter body, a plurality of pores are arranged on the base body and communicated from the center of the base body to the whole outer surface of the base body, and the diameter of each pore is smaller than that of the cooling and lubricating secondary flow passage;
the gear milling cutter body, the cooling lubricating liquid main flow channel, the first intermediate cooling lubricating liquid flow channel, the second intermediate cooling lubricating liquid flow channel, the base body and the cooling lubricating liquid auxiliary flow channel are all formed in a 3D printing mode in a machining mode.
8. The gear milling cutter with the self-cooling lubricating structure according to claim 7, wherein: the diameter of the main cooling and lubricating flow passage is 1mm-1.2mm, and the diameter of the secondary cooling and lubricating flow passage is 0.5 mm-0.75 mm.
9. The gear milling cutter with the self-cooling lubricating structure according to claim 8, wherein: the cooling and lubricating liquid main flow channel is spiral in shape.
10. The gear milling cutter with the self-cooling lubricating structure according to claim 9, wherein: the milling cutter blade comprises an outer blade and an inner blade, wherein the outer blade is arranged close to the tooth crest position of the tooth part, the inner blade is arranged close to the tooth root position of the tooth part, and correspondingly, a plurality of cooling and lubricating liquid auxiliary channels are divided into outer blade cooling and lubricating liquid auxiliary channels for cooling the outer blade and inner blade cooling and lubricating liquid auxiliary channels for cooling the inner blade.
11. The gear milling cutter with the self-cooling lubricating structure according to claim 10, wherein: the milling cutter blade is fixedly mounted on the tooth part in a screw connection or welding mode.
12. A numerically controlled milling machine comprising a shank holding portion having an internal cooling flow passage, the shank holding portion having mounted thereon a gear milling cutter according to claim 11, the main flow passage of cooling lubricant in the gear milling cutter communicating with the internal cooling flow passage in the shank holding portion.
CN201811497193.0A 2018-12-07 2018-12-07 Gear milling cutter with self-cooling lubricating structure Active CN109352054B (en)

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SE453465B (en) * 1984-12-20 1988-02-08 Santrade Ltd SET TO MAKE A REFRIGERATOR CHANNEL IN A LONG-TERM CUTTING TOOL
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CN207043406U (en) * 2017-05-15 2018-02-27 常州市海力工具有限公司 A kind of alloy bloom face milling cutters
CN108188460A (en) * 2018-01-22 2018-06-22 华南理工大学 It is a kind of based on the molding milling cutter for including spiral coolant flow channel of 3D printing
CN207824055U (en) * 2018-01-22 2018-09-07 华南理工大学 It is a kind of based on the molding milling cutter for including spiral coolant flow channel of 3D printing
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