CN102500809A - 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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- CN102500809A CN102500809A CN2011103290996A CN201110329099A CN102500809A CN 102500809 A CN102500809 A CN 102500809A CN 2011103290996 A CN2011103290996 A CN 2011103290996A CN 201110329099 A CN201110329099 A CN 201110329099A CN 102500809 A CN102500809 A CN 102500809A
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- cup
- lathe
- pressed compact
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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 made up of compound preparation, shaping and sintering three parts.Conventional mould method for press forming can't be configured as standard ball; Though adopt the hydrostatic pressing method to can be shaped as basic spheroid; But still be difficult to reach to size, the relevant specification requirement of circularity control, so the processing pressed compact of press forming all must be processed the standard that reaches pressed compact state sintered carbide ball intermediate products through corresponding subsequent.Method commonly used is manual scraper scraping (referring to Fig. 1).
This method is except that inefficiency, and labour intensity is very big, thereby processing cost is very high.If can find and a kind ofly process pressed compact state sintered carbide ball through mechanical high-speed cutting product method, can control size and precision after the processing simultaneously reliably, will significantly enhance productivity, reduce production costs.
Summary of the invention
The present invention is intended to solve prior art and can't uses mechanical high-speed cutting that the sintered carbide ball pressed compact such as is processed at technical problem, comes Milling Process sintered carbide ball pressed compact so that a kind of engine lathe that uses to be provided; Convenient reliable control processing dimension of ability and precision; Isolated plant and method with engine lathe processing rigid alloying pellet pressed compact of characteristics such as production efficiency height, production cost be low.
The present invention realizes through following technical scheme.
The isolated plant of engine lathe processing rigid alloying pellet pressed compact of the present invention; The handle of a knife of the scroll chuck clamping milling cutter 2 that links to each other with lathe spindle; Dovetail seat board 10 is fixed on the lathe middle carriage 11; Two bearings 1 are individually fixed in the holder 8 at dovetail seat board 10 two ends, and two terminations of the screw mandrel 7 that left and right sides screw rod direction of rotation is opposite are set up in the axle center of two bearings 9 respectively; Two movable dovetail framves 6 are located between two bearings 1, and screw mandrel 7 runs through its underpart internal thread through hole, and the screw thread rotation of left and right sides internal thread through hole is in the opposite direction, and match with screw mandrel 7 left and right sides screw rods respectively; The top of two movable dovetail framves 6 is fixed with a bearing 25 respectively, and the bottom of cup tube 4 links to each other with bearing 25, and the opening of two cup tubes 4 is relative.
The isolated plant of engine lathe processing rigid alloying pellet pressed compact of the present invention, the symmetrical center line of said two cup tubes is the center line of lathe spindle, cup nozzle plane vertical with horizontal plane and with lathe spindle among heart line parallel; The axial line of two cup tubes point-blank, cup tube axial line is parallel with horizontal plane, and vertical with the center line of lathe spindle; The axial line of two cup tubes and the center line of lathe spindle are positioned on the same plane and intersect vertically.
The isolated plant of engine lathe processing rigid alloying pellet pressed compact of the present invention; Said milling cutter 2 is the milling cutter of bowl-shape inner cone edge diamond blade; Cutting plate for milling cutters is four, and edge line rotates around axial line and forms a female cone body, cone 1/2nd angle [alpha]=30
0± 5 ', the relation that cone major part opening diameter DA and spheroid require to process the diameter D that puts in place is: DA=DCos30
0
The isolated plant of engine lathe processing rigid alloying pellet pressed compact of the present invention, said two cup tube D outer diameter B are identical, and two cup tube D outer diameter B and spheroid require put in place the relation of diameter D of processing to be: DB=D * Sin30 °-4.
The method of engine lathe processing rigid alloying pellet pressed compact of the present invention comprises the steps:
A) isolated plant of the described engine lathe processing rigid of assembling claim 1 alloying pellet pressed compact on lathe;
B) use the fixing pole of scroll chuck, and to make the axial line of pole and spindle axis line be straight line;
C) shake middle carriage and rotary screw 7, the mouth plane and the aforementioned pole of two cup tubes 4 are joined simultaneously;
D) reconditioning or pad dovetail seat board 10, the axial line of two cup tubes 4 of adjustment is consistent to the middle carriage surface height to middle carriage surface height and pole center;
E) the be locked position of middle carriage;
F), start milling cutter 2 and carry out time processing according to required Cutting Process parameter;
G) process at one time after, unclamp a glass collet chuck and hold, clamping once more after with the spheroid half-twist on the horizontal plane, start milling cutter 2 and carry out secondary operations.
The method of engine lathe processing rigid alloying pellet pressed compact of the present invention, in said step f and the step g, processing Cutting Process parameter is 1500-2000 rev/min of a milling cutter rotating speed, the depth of cut≤1.5mm, feeding speed 20-40 centimeters/minute.
Useful technique effect of the present invention:
1. solve with engine lathe and cut the technical problem of processing pressed compact state sintered carbide ball, improved production efficiency, reduced production cost with mechanical high-speed;
2. the wearability of diamond blade is very high, and diameter D=35mm, allowance are that 2000 blades of spheroid processing of 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 identical with sphere diameter cutting minimizing value, the control of size makes things convenient for simple and direct;
4. have the special clamping and the loose configuration that constitute by rotary screw and cup tube; One-time positioning is locked behind the lathe middle carriage; The position of the spheroid centre of sphere of each clamping does not change after guaranteeing, thereby reliable assurance is provided for the control of spherical machining accuracy;
5. isolated plant of the present invention and Jia Shi device are equally applicable to use plain-milling machine and general tool mill with processing rigid alloying pellet pressed compact.
Description of drawings
Fig. 1 tradition hand is scraped alloying pellet pressed compact sketch map
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 vertical view
Fig. 5 is that the A-A of Fig. 4 is to cut away view
Fig. 6 is that the B-B of Fig. 4 is to cut away view
Fig. 7 the present invention's milling cutter perspective view
Label declaration among the figure:
1 scroll chuck; 2 milling cutters; 3 alloying pellet pressed compacts; 4 glasss of tubes; 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 high point of L milling cutter cutting edge and alloying pellet pressed compact radius are formed; DA milling cutter major part opening diameter; DB cup tube 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 the saddle amount of feeding cuts during for l; 21 scrapers; 22 processed balls; 23 is manual back and forth
The specific embodiment
The method of engine lathe processing rigid alloying pellet pressed compact of the present invention is a kind of milling method.Concrete implementation method is referring to Fig. 2.The milling cutter 2 of edge diamond blade is a kind of slotting cutter, the handle of a knife of the scroll chuck folder 1 tight milling cutter 2 that links with main shaft, and the lathe spindle rotation drives milling cutter 2 and rotates; The pivot of milling cutter 2 is the pivot of lathe spindle, and the special fixtures that is made up of screw mandrel 7 and two cup tubes etc. is installed on the lathe middle carriage, utilizes this clamp sintered carbide ball pressed compact to be processed; Clamp method fastens spherical crown locking clamping for two cup tubes of symmetry to the top, and the lathe spindle line is two cup tube symmetrical center line, and two cup tube openings are relative; Cup nozzle plane vertical with horizontal plane and with the lathe spindle line parallel; The axial line of two cup tubes point-blank, cup tube rotate around the axle center and drives processed spheroid rotation, a cup axis is parallel with horizontal plane; Vertical with the lathe spindle line, height is consistent with lathe spindle line height.Confirm the technological parameter of milling cutter rotation (lathe spindle rotation), the depth of cut (saddle feeding scale) and feeding speed (cup tube rotating speed) cutting data; Unclamp a glass collet chuck after machining and hold, accomplish final processing clamping once more after processing half the many spheroid half-twists on the horizontal plane.
Referring to Fig. 3, milling cutter 2 is the milling cutter of bowl-shape inner cone edge diamond blade, and four of cutting plate for milling cutters, edge line rotate around axial line and form a female cone body, cone 1/2nd angle [alpha]=30
0± 5 ', the relation that cone major part opening diameter DA and spheroid require to process the diameter D that puts in place is: DA=DCos30
0
Referring to Fig. 2, the D outer diameter B of two cup tubes is identical, and cup tube D outer diameter B discord milling cutter collides in the ball process in order to control, and the alloying pellet pressed compact diameter D when DB puts in place with processing satisfies following relation: DB=D * Sin30 °-4.The locking mechanism form is the accurate bolt and nut combining structure that screw rod rotation nut moves; Screw rod is the opposite left and right screw rod that revolves of two direction of rotation, and nut is the internal thread through hole on the dovetail frame, and the specification of nut thread and screw flight specification match; The direction of rotation of two nut threads is opposite; The fixed-site of screw rod, the turn screw thread rotates around the screw rod axial line, and two nuts produce and rightaboutly close up synchronously or unclamp.
Below principle of the present invention is proved and is explained.
1. milling cutter 1/2 cone angle is set
Impose a condition: when the lathe saddle amount of feeding was l, the alloying pellet pressed compact diameter reduction after the cutting was l.
Have like Fig. 3:
Sinα=R/L R=L?Sinα
When the saddle amount of feeding has during for l
Sinα=r/(L-l)=(R-l/2)/(L-l) Sinα(L-l)=?R-l/2
R=L Sin α substitution following 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 does
DA=DCos30
0
3. cup tube 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 tube D outer diameter.
3) procedure of processing and technology:
Step: clamping processes at twice, after machining for the first time, unclamps chuck, reprocesses clamping about processing ball half-twist on the horizontal plane.
Technology: the time processing branch is rough milled with the finish-milling two procedures and is accomplished.
Rough mill technology: 1800 rev/mins of rotating speeds, depth of cut 1-1.5mm, feeding speed 25-30 centimeters/minute.
Finish-milling technology: 1800 rev/mins of rotating speeds, depth of cut 0.05-0.1mm, feeding speed 15-20 centimeters/minute.
The diameter, circularity and the roughness that process spheroid all reach within the specification requirement.
Embodiment 2:
The processing diameter is a 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 tube D outer diameter.
3) procedure of processing and technology:
Step: clamping processes at twice, after machining for the first time, unclamps chuck, reprocesses clamping about processing ball half-twist on the horizontal plane.
Technology: the time processing branch is rough milled with the finish-milling two procedures and is accomplished.
Rough mill technology: 1800 rev/mins of rotating speeds, depth of cut 1-1.5mm, feeding speed 25-30 centimeters/minute.
Finish-milling technology: 1800 rev/mins of rotating speeds, depth of cut 0.05-0.1mm, feeding speed 15-20 centimeters/minute.
The diameter, circularity and the roughness that process spheroid all reach within the specification requirement.
In sum; The isolated plant and the method for engine lathe processing rigid alloying pellet pressed compact of the present invention; Cut the technical problem of processing pressed compact state sintered carbide ball through using engine lathe to solve with mechanical high-speed; And can convenient reliable control processing dimension and precision, have plurality of advantages such as production efficiency height, production cost are low.
Claims (6)
1. the isolated plant of engine lathe processing rigid alloying pellet pressed compact; It is characterized in that: the handle of a knife of the scroll chuck clamping milling cutter (2) that links to each other with lathe spindle; Dovetail seat board (10) is fixed on the lathe middle carriage (11); Two bearings one (9) are individually fixed in the holder (8) at dovetail seat board (10) two ends, and two terminations of the screw mandrel (7) that left and right sides screw rod direction of rotation is opposite are set up in the axle center of two bearings (9) respectively; Two movable dovetail framves (6) are located between two bearings one (9), and screw mandrel (7) runs through its underpart internal thread through hole, and the screw thread rotation of left and right sides internal thread through hole is in the opposite direction, and match with screw mandrel (7) left and right sides screw rod respectively; The top of two movable dovetail framves (6) is fixed with a bearing two (5) respectively, and the bottom of cup tube (4) links to each other with bearing two (5), and the opening of two cup tubes (4) is relative.
2. the isolated plant of engine lathe processing rigid alloying pellet pressed compact according to claim 1; It is characterized in that: the symmetrical center line of said two cup tubes is the center line of lathe spindle, cup nozzle plane vertical with horizontal plane and with lathe spindle among heart line parallel; The axial line of two cup tubes point-blank, cup tube axial line is parallel with horizontal plane, and vertical with the center line of lathe spindle; The axial line of two cup tubes and the center line of lathe spindle are positioned on the same plane and intersect vertically.
3. the isolated plant of engine lathe processing rigid alloying pellet pressed compact according to claim 1; It is characterized in that: said 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 around axial line and forms a female cone body, cone 1/2nd angles (α)=30
0± 5 ', the relation that cone major part opening diameter (DA) and spheroid require to process the diameter (D) that puts in place is: DA=DCos30
0
4. the isolated plant of engine lathe processing rigid alloying pellet pressed compact according to claim 1; It is characterized in that: said two cup tube external diameters (DB) are identical, and the relation that two cup tube external diameters (DB) and spheroid require to process the diameter (D) that puts in place is: DB=D * Sin30 °-4.
5. the method for engine lathe processing rigid alloying pellet pressed compact is characterized in that comprising the steps:
A) isolated plant of the described engine lathe processing rigid of assembling claim 1 alloying pellet pressed compact on lathe;
B) use the fixing pole of scroll chuck, and to make the axial line of pole and spindle axis line be straight line;
C) shake middle carriage and rotary screw (7), the mouth plane and the aforementioned pole of two cup tubes (4) are joined simultaneously;
D) reconditioning or pad dovetail seat board (10), the axial line of adjusting two cup tubes (4) is consistent to the middle carriage surface height to middle carriage surface height and pole center;
E) the be locked position of middle carriage;
F) rotary screw (7); Two cup tubes (4) are unclamped take off pole; Sintered carbide ball pressed compact to be processed is put between two cup tubes (4), and rotary screw (7) makes two cup tubes (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) process at one time after, unclamp a glass collet chuck and hold, clamping once more after with the spheroid half-twist on the horizontal plane, start milling cutter (2) and carry out secondary operations.
6. the method for engine lathe processing rigid alloying pellet pressed compact according to claim 5; It is characterized in that: in said step f and the step g; Processing Cutting Process parameter is 1500-2000 rev/min of a milling cutter rotating speed, the depth of cut≤1.5mm, feeding speed 20-40 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 |
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| 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 |
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|---|---|
| CN102500809A true CN102500809A (en) | 2012-06-20 |
| CN102500809B CN102500809B (en) | 2013-12-25 |
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|---|---|---|---|
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|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096894A (en) * | 2014-06-24 | 2014-10-15 | 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 (8)
| 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 |
| 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 |
| 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 |
-
2011
- 2011-10-26 CN CN 201110329099 patent/CN102500809B/en not_active Expired - Fee Related
Patent Citations (8)
| 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 |
| 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 |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096894A (en) * | 2014-06-24 | 2014-10-15 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102500809B (en) | 2013-12-25 |
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