CN102500809B - Device and method special for processing hard alloying pallet green compact on plain lathe - Google Patents
Device and method special for processing hard alloying pallet green compact on plain lathe Download PDFInfo
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- CN102500809B CN102500809B CN 201110329099 CN201110329099A CN102500809B CN 102500809 B CN102500809 B CN 102500809B CN 201110329099 CN201110329099 CN 201110329099 CN 201110329099 A CN201110329099 A CN 201110329099A CN 102500809 B CN102500809 B CN 102500809B
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Abstract
The invention discloses a device and a method special for processing a hard alloying pallet green compact on a plain lathe, which relate to the technical field of manufacturing of hard alloys and are used for solving the technical problems that the hard alloying pallet green compact cannot be processed by adopting mechanical high-speed cutting in the prior art and the like. In the device, a three-jaw chuck connected with a main shaft of the lathe is used for clamping a handle of a milling cutter (2); a dovetail base plate (10) is fixed on a carriage (11) in the lathe; two bearings I (9) are fixed in fixed seats (8) at the two ends of the dovetail base plate (10) respectively; the two tips of a lead screw (7) of which screw rods on left and right sides are opposite on the rotating directions are erected on the axle centers of the two bearings I (9) respectively; two movable dovetail frames (6) are arranged between the two bearing I (9); the lead screw (7) passes through inner threaded through holes on the lower parts of the two movable dovetail frames (6); the thread rotating directions of the left and right inner threaded through holes are opposite, and are matched with the screw rods on the left and right sides of the lead screw (7) respectively; and the upper parts of the two movable dovetail frames (6) are connected with two cup barrels (4) respectively.
Description
Technical field
The present invention relates to carbide alloy manufacturing technology field, is a kind of method with engine lathe processing pressed compact state carbide alloy.
Background technology
The manufacturing processing technic of carbide alloy mainly is comprised of compound preparation, shaping and sintering three parts.Conventional mould method for press forming can't be configured as standard ball, although adopt the hydrostatic pressing method to can be shaped as basic spheroid, but still be difficult to reach size, circularity are controlled to relevant specification requirement, therefore compressing processing pressed compact all must pass through the standard that corresponding following process reach pressed compact state sintered carbide ball intermediate products.Method commonly used is manual scraper scraping (referring to Fig. 1).
This method is except inefficiency, and labour intensity is very big, thereby processing cost is very high.A kind ofly cut the product method by mechanical high-speed and process pressed compact state sintered carbide ball if can find, size and the precision after controlled working reliably, will significantly enhance productivity, reduce production costs simultaneously.
Summary of the invention
The present invention is intended to solve prior art and can't uses mechanical high-speed cutting the technical problem such as to be processed to the sintered carbide ball pressed compact, to provide a kind of, can carry out Milling Process sintered carbide ball pressed compact with engine lathe; The convenient reliable controlled working size of energy and precision; Special purpose device and method with processing hard alloying pallet green compact on plain lathe of the characteristics such as production efficiency is high, production cost is low.
The present invention is achieved by the following technical solutions.
The special purpose device of processing hard alloying pallet green compact on plain lathe of the present invention, all be fixed with a bearing one in the holder at dovetail seat board two ends, two terminations of the screw mandrel 7 that left and right sides screw rod direction of rotation is contrary are set up in respectively the axle center of two bearings 1; Two movable dovetail framves 6 are located between two bearings 1, and screw mandrel 7 runs through its underpart internal thread through hole, the screw thread rotation opposite direction of left and right internal thread through hole, and with screw mandrel 7 left and right sides screw rods, match respectively; The top of two movable dovetail framves 6 is fixed with respectively a bearing 25, the bottom of cup cylinder 4 is connected with bearing 25, and the opening of two cup cylinders 4 is relative, and it also comprises the scroll chuck be connected with lathe spindle, the handle of a knife of scroll chuck clamping milling cutter 2, dovetail seat board 10 is fixed on lathe middle carriage 11.
The special purpose device of processing hard alloying pallet green compact on plain lathe of the present invention, the center line that the symmetrical center line of described two cup cylinders is lathe spindle, the cup nozzle plane vertical with horizontal plane and with lathe spindle among heart line parallel; Point-blank, cup cylinder axial line is parallel with horizontal plane, and vertical with the center line of lathe spindle for the axial line of two cup cylinders; The axial line of two cup cylinders and the center line of lathe spindle are in the same plane and intersect vertically.
The special purpose device of processing hard alloying pallet green compact on plain lathe of the present invention, the milling cutter that described milling cutter 2 is bowl-shape inner cone edge diamond blade, cutting plate for milling cutters is four, edge line rotates to form an inner circle cone around axial line, inner circle cone 1/2nd angle [alpha]=30 ° ± 5 ', inner circle cone major part opening diameter DA and spheroid require the pass that processes the diameter D that puts in place to be: inner circle cone major part opening diameter DA=spheroid requires to process the diameter DCos30 ° that puts in place.
The special purpose device of processing hard alloying pallet green compact on plain lathe of the present invention, described two cup cylinder D outer diameter B are identical, and two cup cylinder D outer diameter B and spheroid require put in place the pass of diameter D of processing to be: a cup cylinder D outer diameter B=spheroid requires the processing diameter D * Sin30 °-4 that puts in place.
Adopt the method for the special purpose device processing rigid alloying pellet pressed compact of processing hard alloying pallet green compact on plain lathe of the present invention, comprise the steps:
A) special purpose device of the described processing hard alloying pallet green compact on plain lathe of assembling on lathe;
B) use scroll chuck to fix a pole, and to make the axial line of pole and spindle axis line be straight line;
C) shake middle carriage rotary screw 7, mouth plane and the aforementioned pole of two cup cylinders 4 are joined simultaneously;
D) reconditioning or pad dovetail seat board 10, the axial line of adjusting two cup cylinders 4 is consistent to the height on middle carriage surface with the pole center to the height on middle carriage surface;
E) the be locked position of middle carriage;
F) rotary screw, unclamp two cup cylinders and take off pole, and sintered carbide ball pressed compact to be processed is put between two cup cylinders, rotary screw, make the tight sintered carbide ball pressed compact to be processed of two cup collet chucks, according to required Cutting Process parameter, start milling cutter 2 and carry out time processing;
G) after processing at one time, unclamp a glass collet chuck and hold, will again clamp after the spheroid half-twist on horizontal plane, start milling cutter 2 and carry out secondary operations.
The method of processing hard alloying pallet green compact on plain lathe of the present invention, in described step f, processing Cutting Process parameter is 1800 rev/mins of milling cutter rotating speeds, the depth of cut 1～1.5mm or 0.05～0.1mm, feeding speed 25-30 centimeters/minute or 15-20 centimeters/minute; In described step g, processing Cutting Process parameter is 1800 rev/mins of milling cutter rotating speeds, the depth of cut 1～1.5mm or 0.05～0.1mm, feeding speed 25-30 centimeters/minute or 15-20 centimeters/minute.
Useful technique effect of the present invention:
1. solve the technical problem of by mechanical high-speed, cutting to process pressed compact state sintered carbide ball with engine lathe, improved production efficiency, reduced production cost;
2. the wearability of diamond blade is very high, diameter D=35mm, and 2000 blades of the processing of sphere that allowance is 2mm can not wear and tear, and the control of size can be effectively guaranteed;
Design milling cutter internal taper 1/2nd α=30 ° ± 5 ', make lathe saddle scale feed value and sphere diameter cut the minimizing value identical, the control of size facilitates simple and direct;
4. there is the special clamping and the loose configuration that are formed by rotary screw and cup cylinder, one-time positioning is locked after the lathe middle carriage, after guaranteeing, the position of the spheroid centre of sphere of each clamping does not change, thereby provides Reliable guarantee for the control of spherical machining accuracy;
5. special purpose device of the present invention and Jia Shi device, be equally applicable to use plain-milling machine and general tool mill with processing rigid alloying pellet pressed compact.
The accompanying drawing explanation
Fig. 1 tradition hand is scraped alloying pellet pressed compact schematic diagram
Fig. 2 the present invention's perspective view
Fig. 3 the present invention's pressed compact processing partial schematic diagram
Fig. 4 the present invention's top view
The A-A that Fig. 5 is Fig. 4 is to cut away view
The B-B that Fig. 6 is Fig. 4 is to cut away view
Fig. 7 the present invention's milling cutter perspective view
The number in the figure explanation:
1 scroll chuck, 2 milling cutters, 3 alloying pellet pressed compacts, 4 glasss of cylinders, 5 bearings two, 6 dovetail framves, 7 screw mandrels, 8 holders, 9 bearings one, 10 dovetail seat boards, 11 lathe middle carriages, α cone 1/2nd angles, the right angled triangle wire length that the high point of L milling cutter cutting edge and alloying pellet pressed compact radius form, DA milling cutter major part opening diameter, DB cup cylinder external diameter, the D spheroid requires to process the diameter that puts in place, R alloying pellet pressed compact radius, l lathe saddle cutting feeding, r is the pressed compact radius after cutting when the saddle amount of feeding is l, 21 scrapers, 22 processed balls, 23 is manual back and forth
The specific embodiment
The method of processing hard alloying pallet green compact on plain lathe of the present invention is a kind of milling method.Concrete methods of realizing is referring to Fig. 2.The milling cutter 2 of edge diamond blade is a kind of slotting cutter, the scroll chuck 1 linked with main shaft clamps the handle of a knife of milling cutter 2, lathe spindle rotarily drives milling cutter 2 rotations, the pivot that the pivot of milling cutter 2 is lathe spindle, the special fixtures consisted of screw mandrel 7 and two cup cylinders etc. is installed on the lathe middle carriage, utilize this clamp sintered carbide ball pressed compact to be processed, clamp method fastens spherical crown locking clamping for two symmetrical cup cylinders to top, the lathe main axis is two cup cylinder symmetrical center line, two cup cylinder openings are relative, the cup nozzle plane vertical with horizontal plane and with the lathe spindle line parallel, the axial line of two cup cylinders point-blank, the cup cylinder rotarily drives processed spheroid rotation around axle center, cup cylinder axis is parallel with horizontal plane, vertical with the lathe main axis, height is consistent with lathe main axis height.Determine the technological parameter of milling cutter rotation (lathe spindle rotation), the depth of cut (saddle feeding scale) and feeding speed (cup cylinder rotating speed) cutting data, unclamp a glass collet chuck after machining and hold, on horizontal plane, after processing half many spheroid half-twist, again clamped final processing.
Referring to Fig. 3, the milling cutter that milling cutter 2 is bowl-shape inner cone edge diamond blade, four of cutting plate for milling cutters, edge line rotates to form an inner circle cone around axial line, inner circle cone 1/2nd angle [alpha]=30
0± 5 ', inner circle cone major part opening diameter DA and spheroid require the pass that processes the diameter D that puts in place to be: inner circle cone major part opening diameter DA=spheroid requires to process the diameter DCos30 that puts in place
0.
Referring to Fig. 2, the D outer diameter B of two cup cylinders is identical, in order to control in the ball process cup cylinder D outer diameter B discord milling cutter, collide, cup cylinder D outer diameter B and spheroid require the processing diameter D that puts in place to meet following relation: a cup cylinder D outer diameter B=spheroid requires the processing diameter D * Sin30 °-4 that puts in place.The locking mechanism form is the accurate bolt and nut combining structure that the screw rod rotating nut moves; screw rod is the left and right screw rod that revolves that two direction of rotation is contrary; nut is the internal thread through hole on the dovetail frame; the specification of nut thread and screw flight specification match; the direction of rotation of two nut threads is contrary; the position of screw rod is fixed, and the turn screw thread rotates around the screw rod axial line, and two nuts produce and rightaboutly synchronously close up or unclamp.
Below to principle of the present invention prove with explanation.
1. milling cutter 1/2 cone angle is set
Impose a condition: when the lathe saddle amount of feeding is l, the alloying pellet pressed compact diameter reduction after cutting is l.
As Fig. 3 has:
Sinα=R/L R=L Sinα
When being l, the saddle amount of feeding has
Sinα=r/(L-l)=(R-l/2)/(L-l) Sinα(L-l)= R-l/2
R=L Sin α substitution above formula is had
Sinα(L-l)= L Sinα-l/2 l Sinα=l/2
Sinα=1/2
α=30
0
2. milling cutter major part opening diameter is
DA=DCos30
0
3. cup cylinder D outer diameter B
DB=D×Sin30°-4
Embodiment 1:
The processing diameter is that 36mm damages the state sintered carbide ball by pressure, allowance 2-3mm, specification requirement: diameter D=36
+ 0.2, circularity 0.2, roughness 3.2.
1) special-purpose milling cutter customized
Milling cutter female cone tapering 1/2nd: α=30 ° ± 5 '
Milling cutter major part opening diameter: DA=DCos30
0=31.177
Get DA=31.2 ± 0.10.
2) B=D * Sin30 °-4=14 of cup cylinder D outer diameter.
3) procedure of processing and technique
Step: clamping processes at twice, after machining for the first time, unclamps chuck, on horizontal plane, processing ball half-twist left and right is clamped to reprocessing.
Technique: time processing is divided to rough mill with the finish-milling two procedures and is completed.
Rough mill technique: 1800 rev/mins of rotating speeds, depth of cut 1-1.5mm, feeding speed 25-30 centimeters/minute.
Finish-milling technique: 1800 rev/mins of rotating speeds, depth of cut 0.05-0.1mm, feeding speed 15-20 centimeters/minute.
Within diameter, circularity and the roughness that processes spheroid all reaches specification requirement.
Embodiment 2:
The processing diameter is 68.8mm pressed compact state sintered carbide ball, allowance 3-5mm, specification requirement: diameter D=68.8
+ 0.3, circularity 0.32, roughness 3.2.
1) special-purpose milling cutter customized
Milling cutter female cone tapering 1/2nd: α=30 ° ± 5 '
Milling cutter major part opening diameter: DA=DCos30
0=59.582
Get DA=59.6 ± 0.10.
2) B=D * Sin30 °-4=30.4 of cup cylinder D outer diameter.
3) procedure of processing and technique
Step: clamping processes at twice, after machining for the first time, unclamps chuck, on horizontal plane, processing ball half-twist left and right is clamped to reprocessing.
Technique: time processing is divided to rough mill with the finish-milling two procedures and is completed.
Rough mill technique: 1800 rev/mins of rotating speeds, depth of cut 1-1.5mm, feeding speed 25-30 centimeters/minute.
Finish-milling technique: 1800 rev/mins of rotating speeds, depth of cut 0.05-0.1mm, feeding speed 15-20 centimeters/minute.
Within diameter, circularity and the roughness that processes spheroid all reaches specification requirement.
In sum, the special purpose device of processing hard alloying pallet green compact on plain lathe of the present invention and method, by solve the technical problem of by mechanical high-speed, cutting to process pressed compact state sintered carbide ball with engine lathe, and the convenient reliable controlled working size of energy and precision, there is the plurality of advantages such as production efficiency is high, production cost is low.
Claims (6)
1. the special purpose device of processing hard alloying pallet green compact on plain lathe, all be fixed with a bearing one (9) in the holder (8) at dovetail seat board (10) two ends, two terminations of the screw mandrel (7) that left and right sides screw rod direction of rotation is contrary are set up in respectively the axle center of two bearings one (9); Two movable dovetail framves (6) are located between two bearings one (9), and screw mandrel (7) runs through its underpart internal thread through hole, the screw thread rotation opposite direction of left and right internal thread through hole, and with screw mandrel (7) left and right sides screw rod, match respectively; The top of two movable dovetail framves (6) is fixed with respectively a bearing two (5), the bottom of cup cylinder (4) is connected with bearing two (5), the opening of two cup cylinders (4) is relative, it is characterized in that: it also comprises the scroll chuck be connected with lathe spindle, the handle of a knife of scroll chuck clamping milling cutter (2), dovetail seat board (10) is fixed on lathe middle carriage (11).
2. the special purpose device of processing hard alloying pallet green compact on plain lathe according to claim 1, it is characterized in that: the center line that the symmetrical center line of described two cup cylinders is lathe spindle, the cup nozzle plane vertical with horizontal plane and with lathe spindle among heart line parallel; Point-blank, cup cylinder axial line is parallel with horizontal plane, and vertical with the center line of lathe spindle for the axial line of two cup cylinders; The axial line of two cup cylinders and the center line of lathe spindle are in the same plane and intersect vertically.
3. the special purpose device of processing hard alloying pallet green compact on plain lathe according to claim 1, it is characterized in that: described milling cutter (2) is the milling cutter of bowl-shape inner cone edge diamond blade, cutting plate for milling cutters is four, edge line rotates to form an inner circle cone around axial line, inner circle cone 1/2nd angle [alpha]=30 ° ± 5 ', inner circle cone major part opening diameter DA and spheroid require the pass that processes the diameter D that puts in place to be: inner circle cone major part opening diameter DA=spheroid requires to process the diameter D * Cos30 ° that puts in place.
4. the special purpose device of processing hard alloying pallet green compact on plain lathe according to claim 1, it is characterized in that: described two cup cylinder D outer diameter B are identical, and two cup cylinder D outer diameter B and spheroid require put in place the pass of diameter D of processing to be: a cup cylinder D outer diameter B=spheroid requires the processing diameter D * Sin30 °-4 that puts in place.
5. adopt the method for the special purpose device processing rigid alloying pellet pressed compact of processing hard alloying pallet green compact on plain lathe as claimed in claim 1, it is characterized in that comprising the steps:
A) special purpose device of assembling processing hard alloying pallet green compact on plain lathe claimed in claim 1 on lathe;
B) use scroll chuck to fix a pole, and to make the axial line of pole and spindle axis line be straight line;
C) shake middle carriage rotary screw (7), mouth plane and the aforementioned pole of two cup cylinders (4) are joined simultaneously;
D) reconditioning or pad dovetail seat board (10), the axial line of adjusting two cup cylinders (4) is consistent to the height on middle carriage surface with the pole center to the height on middle carriage surface;
E) the be locked position of middle carriage;
F) rotary screw (7), two cup cylinders (4) are unclamped and take off pole, sintered carbide ball pressed compact to be processed is put between two cup cylinders (4), rotary screw (7), make two cup cylinders (4) clamp sintered carbide ball pressed compact to be processed, according to required Cutting Process parameter, start milling cutter (2) and carry out time processing;
G) after processing at one time, unclamp a glass collet chuck and hold, will again clamp after the spheroid half-twist on horizontal plane, start milling cutter (2) and carry out secondary operations.
6. the method for processing hard alloying pallet green compact on plain lathe according to claim 5, it is characterized in that: in described step f, processing Cutting Process parameter is 1800 rev/mins of milling cutter rotating speeds, the depth of cut 1～1.5mm or 0.05～0.1mm, feeding speed 25-30 centimeters/minute or 15-20 centimeters/minute; In described step g, processing Cutting Process parameter is 1800 rev/mins of milling cutter rotating speeds, the depth of cut 1～1.5mm or 0.05～0.1mm, feeding speed 25-30 centimeters/minute or 15-20 centimeters/minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110329099 CN102500809B (en) | 2011-10-26 | 2011-10-26 | Device and method special for processing hard alloying pallet green compact on plain lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110329099 CN102500809B (en) | 2011-10-26 | 2011-10-26 | Device and method special for processing hard alloying pallet green compact on plain lathe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102500809A CN102500809A (en) | 2012-06-20 |
| CN102500809B true CN102500809B (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110329099 Expired - Fee Related CN102500809B (en) | 2011-10-26 | 2011-10-26 | Device and method special for processing hard alloying pallet green compact on plain lathe |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096894B (en) * | 2014-06-24 | 2017-01-25 | 芜湖求精紧固件有限公司 | Lathe |
| CN105598475A (en) * | 2016-02-22 | 2016-05-25 | 江苏博尚智能装备有限公司 | Full-automatic numerical control lathe for turning steel balls |
| CN107030770A (en) * | 2016-12-02 | 2017-08-11 | 重庆市帝安闰合农业股份有限公司 | Lemon automatic clinical microtome |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3675535A (en) * | 1970-11-12 | 1972-07-11 | Chester W Jerome | Apparatus for removing excess of material projecting from the true periphery of a bowling ball without modifying such true periphery |
| CN2238110Y (en) * | 1995-06-06 | 1996-10-23 | 大连机床厂数控机床技术开发公司 | One mounting and clamping fixture for working multihead parts |
| CN2267887Y (en) * | 1996-08-16 | 1997-11-19 | 张建民 | Milling fixture for lathe |
| CN2675330Y (en) * | 2004-02-04 | 2005-02-02 | 马光战 | Bidirectional flat-nose pliers for machine |
| CN101905428A (en) * | 2010-08-27 | 2010-12-08 | 邝锦富 | Bidirectional clamping mechanism |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5237281A (en) * | 1975-09-20 | 1977-03-23 | Doi Tekkosho:Kk | Method and apparatus for forming spherical surfaces |
| JPS56121511U (en) * | 1980-02-20 | 1981-09-16 | ||
| JPS57173413A (en) * | 1981-04-17 | 1982-10-25 | Senda Tekkosho:Kk | Machining method of spherical surface |
-
2011
- 2011-10-26 CN CN 201110329099 patent/CN102500809B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3675535A (en) * | 1970-11-12 | 1972-07-11 | Chester W Jerome | Apparatus for removing excess of material projecting from the true periphery of a bowling ball without modifying such true periphery |
| CN2238110Y (en) * | 1995-06-06 | 1996-10-23 | 大连机床厂数控机床技术开发公司 | One mounting and clamping fixture for working multihead parts |
| CN2267887Y (en) * | 1996-08-16 | 1997-11-19 | 张建民 | Milling fixture for lathe |
| CN2675330Y (en) * | 2004-02-04 | 2005-02-02 | 马光战 | Bidirectional flat-nose pliers for machine |
| CN101905428A (en) * | 2010-08-27 | 2010-12-08 | 邝锦富 | Bidirectional clamping mechanism |
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|---|---|
| CN102500809A (en) | 2012-06-20 |
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