CN110052671B - TiC-based steel cemented hard alloy fine tooth external thread milling device - Google Patents
TiC-based steel cemented hard alloy fine tooth external thread milling device Download PDFInfo
- Publication number
- CN110052671B CN110052671B CN201910362829.9A CN201910362829A CN110052671B CN 110052671 B CN110052671 B CN 110052671B CN 201910362829 A CN201910362829 A CN 201910362829A CN 110052671 B CN110052671 B CN 110052671B
- Authority
- CN
- China
- Prior art keywords
- box body
- fixing
- tic
- hard alloy
- external thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/32—Thread cutting; Automatic machines specially designed therefor by milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1007—Arrangements for cooling or lubricating tools or work by submerging the tools or work partially or entirely in a liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G2225/00—Materials of threading tools, workpieces or other structural elements
- B23G2225/28—Hard metal, i.e. cemented carbides
Abstract
The invention relates to the technical field of TiC-based steel cemented hard alloy precision machining, in particular to a TiC-based steel cemented hard alloy fine-tooth external thread milling device which comprises a box body, wherein the upper end of the box body is provided with an opening, cooling liquid is filled in the box body, a fixed seat is installed in the bottom surface of the box body, a spring chuck is installed at the upper end of the fixed seat and used for fixing a part to be milled, the height of the upper end part of the part is lower than that of the side wall of the box body in a part fixing state, a milling cutter is suspended on the side of the part and adopts a polycrystalline diamond coating, and the main cutting edge part of the milling cutter adopts a two-edge form, and the two edges.
Description
Technical Field
The invention relates to the technical field of precision machining of TiC-based steel cemented hard alloy, in particular to a TiC-based steel cemented hard alloy fine tooth external thread milling device.
Background
The TiC-based steel-bonded hard alloy has high toughness, high wear resistance and high compressive strength of hard alloy, has the processability, forging and stamping properties and weldability of steel after softening treatment (annealing), makes up the defects that the hard alloy is difficult to deform and process, and is widely applied to the fields of cutters, grinding tools, aerospace and the like. However, the material also has self defects, and after strengthening treatment (quenching and tempering), the material has the Brinell Hardness (HRC) of over 67, high hardness and great cutting difficulty.
The research of the conventional cutting process method aiming at the TiC-based steel-bonded hard alloy material is very mature at present, and the main process route is as follows: the rough machining of turning and milling is completed after the material is softened; after the strengthening treatment, finish machining is finished by adopting a grinding method. However, the method is a bottleneck problem in the industry for processing the external thread, and no reference success case exists in the known cutter manufacturers at home and abroad.
The main reason for generating the bottleneck problem is that the external thread structure cannot be processed in a rough sequence and a fine sequence by using a conventional process route, and can only survive in a fine processing sequence after strengthening treatment, the existing process means is single-line grinding wheel forming and grinding processing, but because the hardness of the TiC-based steel cemented hard alloy material is very high at the moment, the abrasive particles of the grinding wheel are seriously worn, the profile distortion of the grinding wheel is caused, the surface quality is reduced very quickly, the grinding wheel needs to be finely finished frequently during grinding processing to ensure the processing precision of the external thread, the finishing time accounts for about half of the whole grinding processing time, and the processing efficiency is very low.
Through patent retrieval, no relevant patent for a thread milling method after the strengthening treatment of the TiC-based steel-bonded hard alloy material part exists.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a TiC-based steel cemented hard alloy fine tooth external thread milling device and a numerical control milling method thereof, wherein the TiC-based steel cemented hard alloy fine tooth external thread milling device has higher precision and processing efficiency and effectively shortens the processing time.
The technical scheme adopted by the invention is as follows:
the utility model provides a fine tooth external screw thread milling unit of TiC base steel knot hard alloy which characterized in that: the milling cutter comprises an upper end system, wherein an open box body is filled with cooling liquid, a fixed seat is installed in the bottom surface of the box body, a spring chuck is installed at the upper end of the fixed seat and used for fixing a part to be milled, the height of the upper end of the part is lower than that of the side wall of the box body in a part fixing state, a milling cutter is suspended beside the part and adopts a polycrystalline diamond coating, and the main cutting edge part of the milling cutter adopts a two-edge form and a two-edge coplanar arrangement.
And the fixing seat is integrally installed in the bottom surface of the box body, an adjusting cushion block is installed beside the box body, a fixing bolt is installed between the adjusting cushion block and the fixing seat, a pressing plate is installed at the upper end part of the fixing bolt and is of a strip-shaped structure, the bottom surface of the pressing plate is manufactured flatly, two end parts of the bottom surface of the pressing plate are respectively pressed in the upper end surfaces of the adjusting cushion block and the fixing seat, the pressing plate forms a lever structure, and a fulcrum is formed at the connecting position of the pressing plate and the fixing bolt.
And, fixing base side outer wall is provided with a plurality of through-holes from top to bottom, all is used for wearing to adorn a set screw in every through-hole, set screw is located the inseparable crimping of tip in the through-hole in the outside terminal surface of the spring dop of installation in the fixing base for fix spring dop and fixing base.
And moreover, the flatness of the contact surface of the fixed seat and the box body is better than 0.01 mm.
A numerical control milling method of a TiC-based steel cemented hard alloy fine-tooth external thread milling device is characterized by comprising the following steps of: the method comprises the following steps:
step 1: placing the box body in a workbench of numerical control equipment;
step 2: clamping a TiC-based steel-bonded hard alloy part to be processed in a spring chuck, and clamping and aligning;
and step 3: filling the box body with cooling liquid, wherein the liquid level is higher than the main cutting edge part of the milling cutter;
and 4, step 4: and milling the external thread of the part to be processed.
The invention has the advantages and positive effects that:
the invention provides an immersion type part fixing tool, wherein a fixed seat and a spring clamping block which are arranged in a box body are used for fixing a part to be processed, the box body is also used as a container of cooling liquid, and the part can be completely immersed in the cooling liquid after the cooling liquid is filled in the box body during processing, so that the precision consistency of the part is ensured, the rapid conduction of cutting heat is facilitated, and the durability of a cutter can be effectively improved; in addition, the cooling liquid can flow rapidly outside the part under the influence of the cutter in the machining process, so that cutting scraps can be taken away in time, and the surface quality of the external thread is improved; in addition, the whole cutting process is carried out in the box body, so that extra damage of the cut hard phase powder to the spindle of the numerical control machine tool can be effectively avoided.
In the invention, the used milling cutter adopts a two-edge form, is not in a full-tooth form used in the traditional process, is more beneficial to chip removal, and can effectively overcome the problem of thread quality caused by abrasion of a certain processing tooth in the full-tooth milling cutter; the polycrystalline diamond coating has high hardness, good wear resistance and thermal conductivity, and ensures the durability and the thread machining precision of the cutter.
According to the invention, the fixing seat is matched with the bottom surface of the box body to have good flatness, the fixing bolt, the pressing plate and the adjusting cushion block are arranged beside the fixing seat to be matched to form a lever structure, the pressing plate presses the fixing seat through the fixing bolt, and the adjusting cushion block on the other side limits the horizontal position of the fixing seat, so that the fixing seat can be effectively pressed and fixed to further fix the radial position of the spring clamping block, and the axial position of the spring clamping block is locked and fixed through the corresponding positioning screw, so that the bidirectional positioning of parts can be ensured to the maximum extent in the processing process, the part deviation caused by impact force or vibration and other factors is prevented, and the processing precision of external threads is further improved.
The method changes the traditional machining means of TiC-based steel cemented hard alloy fine-tooth external thread grinding, adopts a numerical control milling method, ensures the requirements of thread size precision and surface quality, greatly improves the machining efficiency, expands the machinable equipment, successfully solves the bottleneck problem of TiC-based steel cemented hard alloy fine-tooth external thread machining, and is suitable for the difficult problem of high-precision large-batch TiC-based steel cemented hard alloy fine-tooth external thread machining.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of a milling cutter part according to the present invention.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.
The invention discloses a TiC-based steel cemented hard alloy fine-tooth external thread milling device which is characterized by comprising a box body 1, wherein the upper end of the box body is provided with an opening, cooling liquid 2 is filled in the box body, a fixed seat 5 is installed in the bottom surface of the box body, a spring chuck 4 is installed at the upper end of the fixed seat and is used for fixing a part to be milled, the height of the upper end part of the part is lower than that of the side wall of the box body in a part fixing state, a milling cutter 3 is hung on the side of the part and adopts a polycrystalline diamond coating, the material of a milling cutter base body adopts hard alloy, and a main cutting edge part 10 of the milling cutter adopts a two-edge form, and the.
In the embodiment, the diameter a of the milling cutter head part is 1.5 to 3 times of the external thread engineering diameter of the part to be processed, and the length b of the cutter handle is 1.2 times of the external thread length of the part to be processed; d is the excircle clamped by the tool holder, and the specific numerical value is determined according to the specification of a machine tool chuck; the cutter assembly c is suitable for meeting the thread requirement of the part to be machined and avoiding interference with other structures of the part according to the specific shape of the part to be machined.
In this embodiment, the fixing seat is integrally installed in the bottom surface of the box body, an adjusting cushion block 9 is installed beside the box body, a fixing bolt 8 is installed between the adjusting cushion block and the fixing seat, a pressing plate 7 is installed at the upper end of the fixing bolt, the pressing plate is of a strip-shaped structure, the bottom surface of the pressing plate is manufactured flatly, two end portions of the bottom surface of the pressing plate are respectively pressed in the upper end surfaces of the adjusting cushion block and the fixing seat, and the pressing plate forms a lever structure and forms a fulcrum with the connecting position of the fixing bolt.
In this embodiment, fixing base side outer wall is provided with a plurality of through-holes from top to bottom, all is used for wearing to adorn a set screw 6 in every through-hole, set screw is located the inseparable crimping of tip in the through-hole in the outside terminal surface of the spring dop of installation in the fixing base for fix spring dop and fixing base.
In this embodiment, the flatness of the contact surface between the fixing seat and the box body is better than 0.01 mm.
The working process of the invention is as follows:
the method comprises the following steps:
step 1: placing the box body in a workbench of numerical control equipment;
step 2: clamping a TiC-based steel-bonded hard alloy part to be processed in a spring chuck, and clamping and aligning;
and step 3: filling the box body with cooling liquid, wherein the liquid level is higher than the main cutting edge part of the milling cutter;
and 4, step 4: and milling the external thread of the part to be processed.
In this embodiment, the numerical control device described in step 1 preferably employs a high-precision three-axis numerical control machining center, the rotation speed of the main shaft can reach 8000rpm, the main shaft has high-speed stability, the jumping amount is not greater than 0.005mm, and the repeated positioning precision of the main shaft is better than 0.01 mm.
In this embodiment, the cooling liquid in step 3 is preferably a water-based cutting fluid, which can ensure better cooling effect and fluidity of the cutting fluid; and the box body is filled with cooling liquid before machining, so that the parts are completely immersed into the cooling liquid during machining.
In this embodiment, in the external thread milling process described in step 4, since the diameter specification of the selected tool is smaller than the diameter of the grinding wheel used in the existing grinding, in order to ensure the linear speed of external thread milling, a high-speed and low-feed processing mode is adopted, the thread milling cutter is driven by the spindle to perform rotary milling process, the cutting track is spiral, and the spiral reduction distance is the thread pitch of the thread; because the hardness of the TiC-based steel cemented carbide material is high, the adoption of large tool consumption is avoided, the tool consumption is set to be 0.01mm each time, and the processed thread has very high surface quality and dimensional accuracy, so that the high-accuracy requirement of the thread is ensured.
Claims (2)
1. The utility model provides a fine tooth external screw thread milling unit of TiC base steel knot hard alloy which characterized in that: the milling cutter comprises a box body, wherein an opening is formed in the upper end of the box body, cooling liquid is filled in the box body, water-based cutting liquid is used as the cooling liquid, a fixed seat is installed in the bottom surface of the box body, a spring chuck is installed at the upper end of the fixed seat and used for fixing a part to be milled, the height of the upper end part of the part is lower than that of the side wall of the box body in a part fixing state, a milling cutter is suspended beside the part and adopts a polycrystalline diamond coating, and the main cutting edge part of the milling cutter adopts a two-edge form, and the two edges are arranged in a; the diameter of the milling cutter head part is 1.5 to 3 times of the nominal diameter of the external thread of the part to be processed, and the length of the cutter handle is 1.2 times of the length of the external thread of the part to be processed; the outer wall of the side of the fixed seat is provided with a plurality of through holes from top to bottom, a positioning screw is arranged in each through hole in a penetrating manner, and the end part of each positioning screw in each through hole is tightly pressed in the outer side end face of a spring chuck arranged in the fixed seat and used for fixing the spring chuck and the fixed seat; the fixing seat is integrally installed in the bottom face of the box body, an adjusting cushion block is installed beside the box body, a fixing bolt is installed between the adjusting cushion block and the fixing seat, a pressing plate is installed at the upper end portion of the fixing bolt and is of a strip-shaped structure, the bottom face of the pressing plate is manufactured flatly, two end portions of the bottom face of the pressing plate are in pressing connection with the upper end faces of the adjusting cushion block and the fixing seat respectively, the pressing plate forms a lever structure, and a fulcrum is formed between the pressing plate and the connecting position of the fixing bolt.
2. The TiC-based steel cemented hard alloy fine thread external thread milling device according to claim 1, characterized in that: the flatness of the contact surface of the fixed seat and the box body is superior to 0.01 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910362829.9A CN110052671B (en) | 2019-04-30 | 2019-04-30 | TiC-based steel cemented hard alloy fine tooth external thread milling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910362829.9A CN110052671B (en) | 2019-04-30 | 2019-04-30 | TiC-based steel cemented hard alloy fine tooth external thread milling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110052671A CN110052671A (en) | 2019-07-26 |
| CN110052671B true CN110052671B (en) | 2021-05-07 |
Family
ID=67321950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910362829.9A Active CN110052671B (en) | 2019-04-30 | 2019-04-30 | TiC-based steel cemented hard alloy fine tooth external thread milling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110052671B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112496756B (en) * | 2020-11-30 | 2022-08-05 | 九江精密测试技术研究所 | Manual tapping guide tool |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2091887U (en) * | 1991-04-18 | 1992-01-01 | 谢直美 | Universal airing device |
| CN200980441Y (en) * | 2006-12-07 | 2007-11-28 | 许钊培 | Adjusting bench |
| CN102430820A (en) * | 2010-09-29 | 2012-05-02 | 沈阳黎明航空发动机(集团)有限责任公司 | External thread numerical control milling method |
| CN203184992U (en) * | 2013-03-22 | 2013-09-11 | 托伦斯精密机械（上海）有限公司 | Adjustable pressing board |
| CN203830859U (en) * | 2014-04-30 | 2014-09-17 | 荆州环球汽车零部件制造有限公司 | Drilling and tapping mechanism for tapping machine |
| CN203853912U (en) * | 2014-05-08 | 2014-10-01 | 北京汽车研究总院有限公司 | Presser |
| CN206153939U (en) * | 2016-10-31 | 2017-05-10 | 马鞍山中凯机械制造有限公司 | Locating clamping mechanism of rapier weaving machine wefting insertion case |
| CN107127406A (en) * | 2017-05-08 | 2017-09-05 | 中国船舶重工集团公司第七〇七研究所 | A kind of numerical control milling method in titanium alloy fine thread hole |
| CN107309509A (en) * | 2017-08-10 | 2017-11-03 | 安徽六方重联机械股份有限公司 | A kind of hex bolts rolled thread support meanss |
| CN107442873A (en) * | 2017-09-18 | 2017-12-08 | 清华大学 | A kind of ultrasonic vibration auxiliary screw milling screw method |
| CN207573629U (en) * | 2017-11-22 | 2018-07-03 | 温州勇炜汽摩零部件有限公司 | A kind of fixed platform on car horn fitting machine |
| CN207560349U (en) * | 2017-11-22 | 2018-06-29 | 温州勇炜汽摩零部件有限公司 | A kind of mobile base of sounding board former |
| CN108481082B (en) * | 2018-03-20 | 2020-06-09 | 日照华圣机械制造有限公司 | Circulating cooling milling device |
| CN208196350U (en) * | 2018-05-25 | 2018-12-07 | 盐城亿恒机械制造有限公司 | A kind of tractor gear screw thread process milling attachment |
| CN208528582U (en) * | 2018-06-27 | 2019-02-22 | 四川毅恒重工机床有限公司 | Guide vanes of water turbine arm clamp for machining |
-
2019
- 2019-04-30 CN CN201910362829.9A patent/CN110052671B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110052671A (en) | 2019-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100556610C (en) | Sensor QS-4 elastomer processing technology | |
| CN103991039B (en) | The processing method of the shaping CBN emery wheel of a kind of rotor of helical lobe compressor | |
| CN106425290A (en) | Preparation method for table press | |
| CN103551856A (en) | Machining method for preventing high-precision large titanium alloy thin-wall casting mounting edge deformation | |
| KR20230025003A (en) | Combination cutter for online milling of steel rails | |
| CN103042448A (en) | Vertical disc grinder with double grinding heads and machining method implemented by vertical disc grinder | |
| CN106312152A (en) | Method for machining thin-walled components | |
| CN110052671B (en) | TiC-based steel cemented hard alloy fine tooth external thread milling device | |
| Hirst | Imperialism and Finance | |
| CN105290470B (en) | The milling method of graphene aluminum matrix composite | |
| CN205799123U (en) | A kind of end face and inner hole grinding honing composite grinding center | |
| CN103722203A (en) | Porous metallic beryllium deep-hole machining method | |
| CN110625340A (en) | TA15 titanium alloy support class forge piece blank part machining process | |
| CN112621106B (en) | Groove machining method | |
| CN101116938A (en) | Method for processing fluted twist drill helix plow-groove and machine-tooled plow-groove positioning device of the plow-groove machine | |
| CN102909393B (en) | Turning method for diamond roller carrier female die | |
| Heath | Ultrahard tool materials | |
| CN207606676U (en) | Valve grinder valve centering support mechanism | |
| CN112571091A (en) | Tool position refitting method of economical numerical control lathe | |
| CN112846315A (en) | Hard alloy drill bit and machining process thereof | |
| CN112571092A (en) | Trimming method for position accuracy of tool hole array | |
| CN112338459A (en) | High-precision machining method for closed concave surface of steel casting | |
| CN220216840U (en) | Composite cutter for bearing boring | |
| CN109382714A (en) | A kind of aperture method for fine finishing | |
| CN220659259U (en) | Turning ironing composite machining tool for machining long-axis parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |