CN105149664A - Special milling machine for special key slot and processing process for special key slot - Google Patents
Special milling machine for special key slot and processing process for special key slot Download PDFInfo
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- CN105149664A CN105149664A CN201510617928.9A CN201510617928A CN105149664A CN 105149664 A CN105149664 A CN 105149664A CN 201510617928 A CN201510617928 A CN 201510617928A CN 105149664 A CN105149664 A CN 105149664A
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Abstract
The invention provides a special milling machine for a special key slot and a processing process for the special key slot. The special milling machine comprises a base and a stand column, wherein inclination is arranged between the stand column and the base; an angle between the stand column and the base is 88-89.5 degrees; a spindle motor and a spindle box are arranged on the stand column; the spindle motor and the spindle box are connected; a spindle is arranged on the spindled box; a centering guide mechanism is arranged on the base; and a three-claw chuck is arranged on the centering guide mechanism. According to the special milling machine, the product quality is obviously improved, and surface roughness of a milling opening is greatly improved in comparison with the previous surface roughness of the milling opening; besides, symmetrical degree, in comparison with symmetrical degree of the key slot processed by a facing machine, of the key slot is obviously improved, and tolerance is completely within a range required by a drawing. Meanwhile, the inclination of the key slot is directly guaranteed by virtue of equipment, so that manual operation is substituted, faults caused by artificial factors are reduced, accuracy of the inclination is improved, and various defects in the prior art are eliminated; and a working environment of a worker is obviously improved, and manual labor is greatly reduced.
Description
Technical field
The present invention relates to a kind of dedicated key slot milling machine of heavy castings.
Background technology
In the prior art, for extraordinary keyway, heavy castings, such as crank, process its lock-joint time, planing technique can only be adopted, but planer not only working (machining) efficiency is very low, every order of classes or grades at school can only process about four, and product quality also cannot ensure, often therefore cause waste product, cause very large waste to company.The more important thing is that it seriously constrains the production-scale expansion of company and long-range development, and because the problems such as product quality and often schedule delays cause bad impact.This technique existing can not meet the needs of modern enterprise and social production development, is badly in need of improving.
Patent document CN202715876U mentions a kind of milling cutter of special keyway, and described cotter mill cutter clamping part and the knife bar in cutter hub are that grafting coordinates and adopts holding screw to locate, and described cutter hub end is knife bar clamping part.Cotter mill cutter clamping part and cutter hub are the design that grafting coordinates, and are the technical characteristics of this documents.The object done like this is: because cutter hub is in structural design, knife bar diameter in its cutter hub is large, inserting groove in knife bar can either realize coordinating with the grafting of cotter mill cutter knife bar, the processing carrying out keyway in groove can be stretched into again, simultaneously because the knife bar diameter in cutter hub is large, good rigidly, after the knife bar clamping part of cutter hub afterbody and cutter for milling machines clamping head clamp, the rigid requirements of milling machine to cotter mill cutter can be met, there is again the feature adding good stability in man-hour, thus avoid cotter mill cutter frangibility not in.But this milling cutter can not make exact requirements to the lock-joint surface roughness of heavy castings keyway, gradient.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide extraordinary keyway production miller and processing technology thereof, replaces original slotting machine planing technique, enhances productivity, and can make exact requirements to the surface roughness of keyway, gradient etc.
For achieving the above object and other relevant objects, the invention provides extraordinary keyway production miller, comprise base, column, be provided with gradient between described column and described base, the angle between described column and described base is 88 °-89.5 °, and described column is provided with spindle motor, main spindle box, described spindle motor is connected with described main spindle box, described main spindle box is provided with main shaft, and described base is provided with centering pilot mechanism, and described centering pilot mechanism is provided with scroll chuck.
Preferably, described base is provided with workbench, and described workbench is provided with fixture and pressing plate, and described fixture comprises baffle plate and set screw, and described baffle plate surrounds square, and described set screw is positioned at the surrounding of baffle plate, turns set screw, with regard to the position of adjustable baffle plate.
Preferably, described column is also provided with main spindle box lifting motor, lifting gearbox, slide carriage, support bent plate, described lifting gearbox is connected with described main spindle box lifting motor, described lifting gearbox is connected with described slide carriage, described main spindle box is positioned on described support bent plate, and described main spindle box lifting motor can drive the slide carriage of described main spindle box to move up and down on described column.
Preferably, described centering pilot mechanism is provided with guiding lifting handwheel, tooth bar is provided with in described centering pilot mechanism, described guiding lifting handwheel is connected with a gear, described gear engages with described tooth bar, control the lifting of centering pilot mechanism by rotating guiding lifting handwheel, thus scroll chuck can be moved up and down.
Preferably, the side of described base is provided with milling amount feeding handwheel and dial gauge, and described dial gauge comprises dial indicator head and dial gauge bar, and described milling amount feeding handwheel is connected with a screw mandrel, and described dial indicator head is connected with described base.
The method of extraordinary keyway production miller machining of special keyway, comprises the following steps:
(1) install workpiece, hang on production miller by extraordinary workpiece, the contact surface of base and workpiece and base keeps clean.Do not allow to there are the foreign material such as iron filings, the grains of sand, to prevent the keyway side that processes high, opposite side is low, makes keyway tilt and cause waste product, should be firm after crank has lifted, and avoids occurring security incident.
(2) locate, utilize centering pilot mechanism, scroll chuck positions macropore center, with the technique side of milling machine one side for the extraordinary workpiece of benchmark centering, then use the location of workpiece in locking process after dial indicator head Monitoring and Positioning, ensure the requirement of workpiece keyway symmetry.
(3) lock workpiece, fixture is simultaneously afterburning to add clamping of workpieces to workpiece both sides, prevents the transverse shifting of workpiece, then uses pressing plate fixation workpiece centre position, prevent vertically moving of workpiece, reach and lock workpiece completely.
(4) rough mill, main shaft is installed after rough milling cutter and workpiece is rough milled.
(5) finish-milling, main shaft is installed finish-milling cutter and carries out finish-milling to workpiece, now must adjust rotating speed and the depth of cut to improve the surface roughness of workpiece keyway.
(6) measure, after finish-milling machines by work piece hoisting in a detection platform, measure the height of keyway both sides to calculate the symmetry of keyway and to make a record with height dial gauge.Detection platform is positioned at the platform that one near milling machine is specifically designed to detection.
Preferably, in step (4), rough mill out the degree of depth that a bit of rear vernier caliper measurement is rough milled, 1mm allowance is stayed in bottom surface, and two sides are monolateral stays 2mm allowance.
Preferably, in step (4), described in the milling cutter rotating speed rough milled be 140-160r/min, the depth of cut of rough milling is 60-70mm/min.
Preferably, in step (5), the milling cutter rotating speed of described finish-milling is 150-160r/min, and the depth of cut of finish-milling is 70-80mm/min.
As mentioned above, extraordinary keyway production miller of the present invention and processing technology thereof, have following beneficial effect: labor strength obviously reduces, operating efficiency significantly improves, the output increased of every order of classes or grades at school one times, relieves the quantity bottleneck problem restricting company's production development for a long time; Product quality significantly improves, and especially the surface roughness of lock-joint was greatly improved compared with in the past, and the symmetry of this outside keyway significantly improves compared with the keyway symmetry processed with planer, and tolerance is completely within the scope of drawing requirement.Meanwhile, keyway gradient is directly ensured by equipment, instead of manual operation, decreases the error brought by artifact, improves the degree of accuracy of gradient, all drawbacks existed before eliminating; The working environment of workman obviously improves, and manual labor greatly reduces; The use of this equipment makes the production cost of company greatly reduce, and its structure is simple, easy to use, flexible operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of extraordinary keyway production miller.
In figure: 1, base, 2, column, 3, main spindle box lifting motor, 4, lifting gearbox, 5, support bent plate, 6, spindle motor, 7, main spindle box, 8, milling cutter, 9, scroll chuck, 10, centering pilot mechanism, 11, guiding lifting handwheel, 12, feeding handwheel, 13, slide carriage.
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this description can understand other advantages of the present invention and effect easily.
Refer to Fig. 1.Notice, structure, ratio, size etc. that this description institute accompanying drawings illustrates, content all only in order to coordinate description to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this description as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
As shown in Figure 1, the invention provides extraordinary keyway production miller, comprise base 1, column 2, gradient between described column 2 and described base 1, the angle between described column 2 and described base 1 is 88 °-89.5 °, and described column 2 is provided with spindle motor 6, main spindle box 7, described spindle motor 6 is connected with described main spindle box 7, described main spindle box 7 is provided with main shaft, and described base 1 is provided with centering pilot mechanism 10, and described centering pilot mechanism 10 is provided with scroll chuck 9.
As a kind of specific embodiment, base 1 is provided with workbench, and described workbench is provided with fixture and pressing plate, described fixture comprises baffle plate and set screw, and described baffle plate surrounds square, and described set screw is positioned at the surrounding of baffle plate, turn set screw, with regard to the position of adjustable baffle plate.
As a kind of specific embodiment, column 2 is also provided with main spindle box lifting motor 3, lifting gearbox 4, supports bent plate 5, slide carriage 13, described lifting gearbox 4 is connected with described main spindle box lifting motor 3, described spindle motor 6 is connected with described main spindle box 7, described main spindle box 7 is positioned on described support bent plate 5, described support bent plate 5 is fixedly connected with described slide carriage 13, and described main spindle box lifting motor 3 can drive slide carriage 13 to move up and down on described column 2.
As a kind of specific embodiment, column 2 is provided with and supports bent plate 5, and described support bent plate 5 is right angled triangle, and described spindle motor 6 is positioned on the horizontal right-angle side of described support bent plate 5.
As a kind of specific embodiment, centering pilot mechanism 10 is provided with guiding lifting handwheel 11, tooth bar is provided with in described centering pilot mechanism 10, described guiding lifting handwheel 11 is connected with a gear, described gear engages with described tooth bar, control the lifting of centering pilot mechanism 10 by rotating guiding lifting handwheel 11, thus scroll chuck 9 can be moved up and down.
As a kind of specific embodiment, the side of described base 1 is provided with milling amount feeding handwheel 12 and dial gauge, and described dial gauge comprises dial indicator head and dial gauge bar, and described milling amount feeding handwheel 12 is connected with a screw mandrel, and described dial indicator head is connected with described base 1.
The method of extraordinary keyway production miller machining of special keyway, comprises the following steps:
(1) install workpiece, hang on production miller by extraordinary workpiece, the contact surface of base and workpiece and base keeps clean.Do not allow to there are the foreign material such as iron filings, the grains of sand, to prevent the keyway side that processes high, opposite side is low, makes keyway tilt and cause waste product, should be firm after crank has lifted, and avoids occurring security incident.
(2) locate, utilize centering pilot mechanism, scroll chuck positions macropore center, with the technique side of milling machine one side for the extraordinary workpiece of benchmark centering, then use the location of workpiece in locking process after dial indicator head Monitoring and Positioning, ensure the requirement of workpiece keyway symmetry.
(3) lock workpiece, fixture is simultaneously afterburning to add clamping of workpieces to workpiece both sides, prevents the transverse shifting of workpiece, then uses pressing plate fixation workpiece centre position, prevent vertically moving of workpiece, reach and lock workpiece completely.
(4) rough mill, main shaft is installed after rough milling cutter and workpiece is rough milled.
(5) finish-milling, main shaft is installed finish-milling cutter and carries out finish-milling to workpiece, now must adjust rotating speed and the depth of cut to improve the surface roughness of workpiece keyway.
(6) measure, after finish-milling machines by work piece hoisting in a detection platform, measure the height of keyway both sides to calculate the symmetry of keyway and to make a record with height dial gauge.Detection platform is positioned at the platform that one near milling machine is specifically designed to detection.
As a kind of specific embodiment, in step (4), rough mill out the degree of depth that a bit of rear vernier caliper measurement is rough milled, 1mm allowance is stayed in bottom surface, and two sides are monolateral stays 2mm allowance.
As a kind of specific embodiment, in step (4), described in the milling cutter rotating speed rough milled be 140-160r/min, the depth of cut of rough milling is 60-70mm/min.
As a kind of specific embodiment, in step (5), the milling cutter rotating speed of described finish-milling is 150-160r/min, and the depth of cut of finish-milling is 70-80mm/min.
The operation principle of extraordinary keyway production miller processing work is as follows:
1. start main spindle box lifting motor 3, by lifting gearbox 4, utilize leading screw, screw transmission drives slide carriage 13 to move up and down feeding, control the size of the amount of feeding by the speed of frequency converter regulable control feed speed.
2. start spindle motor 6, after main spindle box 7, make slotting cutter revolution control at 157r/min.
Rotate feeding handwheel 12, utilize leading screw, screw transmission drive column 2 movable, realize the feeding on keyway depth direction, the size dial indicator head of the amount of feeding controls.
3. rotate guiding lifting handwheel 11, utilize gear, rack-driving to drive moving up and down of lead in fairlead.Utilize the scroll chuck positioning workpieces hole on lead during workpiece centering, step up center, chuck automatic positioning workpieces hole, after centering, unclamp chuck, rotate after guiding lifting handwheel 11 makes lead move down into original position and start milling key groove.
4. adopt fairlead, scroll chuck to locate macropore center, two sides are benchmark centering crank boring process side, ensure crank symmetry, ensure keyway dimensional tolerance 45+0.08+0.18 with profile milling cutter.Keyway changes over milling by planing, Milling Speed than planing improve 3-4 doubly and also keyway bottom surface, two sides roughness greatly improve, huge convenience is provided to follow-up key grinding of joining.
As mentioned above, extraordinary keyway production miller provided by the invention and processing technology thereof, labor strength obviously reduces, and operating efficiency significantly improves, and the output increased of every order of classes or grades at school one times, relieves the quantity bottleneck problem restricting company's production development for a long time; Product quality significantly improves, and especially the surface roughness of lock-joint was greatly improved compared with in the past, and the symmetry of this outside keyway significantly improves compared with the keyway symmetry processed with planer, and tolerance is completely within the scope of drawing requirement.Meanwhile, keyway gradient is directly ensured by equipment, instead of manual operation, decreases the error brought by artifact, improves the degree of accuracy of gradient, all drawbacks existed before eliminating; The working environment of workman obviously improves, and manual labor greatly reduces; This equipment makes the production cost of company greatly reduce, and its structure is simple, easy to use, flexible operation.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (9)
1. extraordinary keyway production miller, it is characterized in that: comprise base, column, gradient is provided with between described column and described base, angle between described column and described base is 88 °-89.5 °, described column is provided with spindle motor, main spindle box, and described spindle motor is connected with described main spindle box, and described main spindle box is provided with main shaft, described base is provided with centering pilot mechanism, and described centering pilot mechanism is provided with scroll chuck.
2. extraordinary keyway production miller according to claim 1, it is characterized in that: described base is provided with workbench, described workbench is provided with fixture and pressing plate, and described fixture comprises baffle plate and regulates screw mandrel, described baffle plate surrounds square, and described adjustment screw mandrel is positioned at the surrounding of base worktable.
3. extraordinary keyway production miller according to claim 2, it is characterized in that: described column is also provided with main spindle box lifting motor, lifting gearbox, slide carriage, support bent plate, main spindle box, described lifting gearbox is connected with described main spindle box lifting motor, described main spindle box lifting gearbox is connected with described slide carriage, described main spindle box is positioned on described support bent plate, described support bent plate is fixed on slide carriage, and described main spindle box lifting motor can drive the slide carriage of described main spindle box to move up and down on described column.
4. extraordinary keyway production miller according to claim 1, it is characterized in that: described centering pilot mechanism is provided with guiding lifting handwheel, be provided with tooth bar in described centering pilot mechanism, described guiding lifting handwheel is connected with a gear, and described gear engages with described tooth bar.
5. extraordinary keyway production miller according to claim 3, it is characterized in that: the side of described base is provided with milling amount feeding handwheel and dial gauge, described dial gauge comprises dial indicator head and dial gauge bar, described milling amount feeding handwheel is connected with a screw mandrel, and described dial indicator head is connected with described base.
6. the method for extraordinary keyway production miller machining of special keyway, is characterized in that: comprise the following steps,
(1) install workpiece, hang on production miller by extraordinary workpiece, the contact surface of base and workpiece and base keeps clean;
(2) locate, utilize centering pilot mechanism, scroll chuck positions macropore center, with the technique side of milling machine one side for the extraordinary workpiece of benchmark centering, then use the location of workpiece in locking process after dial indicator head Monitoring and Positioning, ensure the requirement of workpiece keyway symmetry;
(3) lock workpiece, fixture is simultaneously afterburning to add clamping of workpieces to workpiece both sides, prevents the transverse shifting of workpiece, then uses pressing plate fixation workpiece centre position, prevent vertically moving of workpiece, reach and lock workpiece completely;
(4) rough mill, main shaft is installed after rough milling cutter and workpiece is rough milled;
(5) finish-milling, main shaft is installed finish-milling cutter and carries out finish-milling to workpiece;
(6) measure, after finish-milling machines by work piece hoisting in a detection platform, measure the height of keyway both sides to calculate the symmetry of keyway and to make a record with height dial gauge.
7. the method for extraordinary keyway production miller machining of special keyway according to claim 6, it is characterized in that: in step (4), rough mill out the degree of depth that a bit of rear vernier caliper measurement is rough milled, 1mm allowance is stayed in bottom surface, and two sides are monolateral stays 2mm allowance.
8. the method for extraordinary keyway production miller machining of special keyway according to claim 6, is characterized in that: in step (4), described in the milling cutter rotating speed rough milled be 140-160r/min, the depth of cut of rough milling is 60-70mm/min.
9. the method for extraordinary keyway production miller machining of special keyway according to claim 6, it is characterized in that: in step (5), the milling cutter rotating speed of described finish-milling is 150-160r/min, and the depth of cut of finish-milling is 70-80mm/min.
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| CN201510617928.9A CN105149664A (en) | 2015-09-25 | 2015-09-25 | Special milling machine for special key slot and processing process for special key slot |
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| CN201510617928.9A CN105149664A (en) | 2015-09-25 | 2015-09-25 | Special milling machine for special key slot and processing process for special key slot |
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Cited By (4)
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| CN105880699A (en) * | 2016-04-05 | 2016-08-24 | 杭州福朗机电科技有限公司 | Processing measuring method for keyway of rotor bracket of hydraulic turbine generator |
| CN105921800A (en) * | 2016-06-30 | 2016-09-07 | 上海振华重工集团(南通)传动机械有限公司 | Machining process for herringbone oblique tooth key groove |
| CN107442824A (en) * | 2017-07-31 | 2017-12-08 | 成都飞机工业（集团）有限责任公司 | A kind of titanium alloy thin wall one side frame class part vacuum suction numerical-control processing method |
| CN115007926A (en) * | 2022-07-01 | 2022-09-06 | 扎赉诺尔煤业有限责任公司 | Inner hole key groove machining device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107442824A (en) * | 2017-07-31 | 2017-12-08 | 成都飞机工业（集团）有限责任公司 | A kind of titanium alloy thin wall one side frame class part vacuum suction numerical-control processing method |
| CN115007926A (en) * | 2022-07-01 | 2022-09-06 | 扎赉诺尔煤业有限责任公司 | Inner hole key groove machining device |
| CN115007926B (en) * | 2022-07-01 | 2023-08-08 | 扎赉诺尔煤业有限责任公司 | Inner hole key groove processing device |
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Application publication date: 20151216 |