CN113941827A - Machining method of power shaft bridge - Google Patents
Machining method of power shaft bridge Download PDFInfo
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- CN113941827A CN113941827A CN202010682314.XA CN202010682314A CN113941827A CN 113941827 A CN113941827 A CN 113941827A CN 202010682314 A CN202010682314 A CN 202010682314A CN 113941827 A CN113941827 A CN 113941827A
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- milling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/121—Power-transmission from drive shaft to hub
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- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention provides a processing method of a power shaft bridge, wherein the power shaft bridge comprises a U-shaped seat body, the U-shaped seat body comprises an inward concave inner stop and a side surface, and the inner stop comprises an upper mounting surface and a bottom surface; sinking platforms are arranged at two ends of the U-shaped seat body; the opposite surface of the inner gear is provided with a middle boss; a central shaft is arranged on one side of the sinking platform far away from the inner stop; the central shafts are positioned on the same central line; a first through hole is formed in the center of the central shaft; the upper end surface of the sinking platform is provided with a mounting hole; threads are arranged at two ends of the central shaft; the method comprises the following steps: casting, marking-out, roughly milling bottom surface, roughly milling top surface, milling end surface to make central hole, roughly turning, primarily finishing, primarily detecting flaw, tempering, gas cutting and stretching ribs, secondarily finishing, primarily inspecting, semi-finely milling bottom surface, semi-finely milling mounting surface, semi-finely milling two ends, thirdly finishing, detecting magnetic powder flaw, finely milling bottom surface, finely milling mounting surface, finely milling two ends, drilling positioning hole, semi-finely turning, finely boring hole, milling key slot, finely turning and rolling, disassembling balance weight, tapping by bench work, finely finishing for four times, detecting magnetic powder flaw and cleaning.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a machining method of a power shaft bridge.
Background
Along with the development of society, urban rail transit development concepts such as energy-saving and environmental-friendly are continuously promoted, and an energy storage type tramcar is produced at present, so that the energy storage type tramcar uses an energy storage element to store electric energy to be used as power for traction, and a current collector arranged on the roof of the car is contacted with a rail to obtain current.
The axle bridge device for the tramcar replaces a traditional axle, the axle bridge device cannot rotate along with wheels, the axle bridge is divided into a power axle bridge and a non-power axle bridge, the production cost of the conventional power axle bridge is high, the stress strength of the power axle bridge is high, the precision requirement is very high, and the rejection rate of the conventional processing method is high.
Disclosure of Invention
The invention aims to provide a method for processing a power shaft bridge, aiming at the problems. The method comprises the following steps: the power shaft bridge comprises a U-shaped seat body, the U-shaped seat body comprises an inward concave inner stop and a side face, and the inner stop comprises an upper mounting surface and a bottom surface; sinking platforms are arranged at two ends of the U-shaped seat body; the opposite surface of the inner gear is provided with a middle boss; a central shaft is arranged on one side of the sinking platform far away from the inner stop; the central shafts are positioned on the same central line;
a first through hole is formed in the center of the central shaft; the upper end surface of the sinking platform is provided with a mounting hole; threads are arranged at two ends of the central shaft;
the processing method of the power shaft bridge comprises the following steps:
casting, marking-out, roughly milling bottom surface, roughly milling top surface, milling end surface to make central hole, roughly turning, primarily finishing, primarily detecting flaw, tempering, gas cutting and stretching ribs, secondarily finishing, primarily inspecting, semi-finely milling bottom surface, semi-finely milling mounting surface, semi-finely milling two ends, thirdly finishing, detecting magnetic powder flaw, finely milling bottom surface, finely milling mounting surface, finely milling two ends, drilling positioning hole, semi-finely turning, finely boring hole, milling key slot, finely turning and rolling, disassembling balance weight, tapping by bench work, finely finishing for four times, detecting magnetic powder flaw and cleaning.
Preferably, the scribing line includes: station I: the product is horizontally placed, the mounting surface is corrected, the axle center of the central axle at two ends of the inner rail is used as a reference, a circle of the central axle line of the axle and other all processing lines are drawn, whether the processing allowance is uniform or not is checked, the central axle is subjected to sample punching and marking, and the sample punching and marking requirements are three continuous points at small intervals;
and a station II: the product is laterally placed, the line I of the angle square calibration station is vertical, the axis center line is drawn for a circle and other all processing lines, whether the processing allowance is uniform or not is checked, the center line is subjected to sample punching and marking, and the sample punching and marking requirements are that three continuous points are closely spaced.
Preferably, roughly milling the bottom surface comprises enabling the bottom surface of the product to face upwards, adjustably supporting and supporting the mounting surface, leveling and straightening the central waist line of the product, press-fitting, fixing and re-calibrating the central line, milling the bottom surface, the two side sinking tables and the side surface of the middle boss, centering the bottom surface, the two side sinking tables and the side surface of the middle boss according to the size of the inner-gear blank, and drilling the mounting hole.
Preferably, the equal-height pads support the installation surface, correction and compaction are carried out, the bottom surface, the side surface, the inner and outer contour machining surface and the middle boss side surface are semi-finish-milled, and 2mm finish machining allowance is reserved on a single side until the size is reached. Correcting and pressing the machined bottom surface serving as a reference, semi-finish milling the top surface, the upper mounting surface and the side surface, reserving 2mm finish machining allowance on a single side to reach the size, and milling end surface mounting holes to reach the size
And correcting and pressing the machined bottom surface serving as a reference, semi-finish-milling two end planes and the outer contour of the shaft end, and reserving 2mm finish machining allowance on a single side to reach the size.
Preferably, the magnetic particle flaw detector is used for magnetic particle flaw detection.
Preferably, the primary flaw detection is performed by using an ultrasonic flaw detector.
Preferably, the quenching and tempering adopts a heat treatment furnace, and the quenching and tempering is carried out according to the requirements of the axle bridge heat treatment process.
The processing method of the power shaft bridge provided by the invention is used for processing through common machining equipment, the processing cutter is a common cutter, the adjustable support and the equal-height cushion block are adopted, the processing precision is high, the cost is low, and the problem of high rejection rate in the prior art is solved.
Drawings
FIG. 1 is a front view of a powered axle bridge of the present invention;
FIG. 2 is a top plan view of the power axle bridge of the present invention;
FIG. 3 is a side view of the power axle bridge of the present invention;
FIG. 4 is an enlarged view of a portion of the embodiment of FIG. 1;
fig. 5 is a partial cross-sectional view of C-C in the embodiment of fig. 1.
Detailed Description
The invention provides a method for processing a power shaft bridge, which comprises the following steps of referring to fig. 1 to 5: the power shaft bridge comprises a U-shaped seat body 10, the U-shaped seat body 10 comprises an inward concave inner stop and a side surface 12, and the inner stop comprises an upper mounting surface 11 and a bottom surface 12; sinking platforms 13 are arranged at two ends of the U-shaped seat body 10; the opposite surface of the inner gear is provided with a middle boss 15; a central shaft 16 is arranged on one side of the sinking platform 13 far away from the inner gear; the central shafts 16 are located on the same center line; a first through hole is formed in the center of the central shaft 16; the upper end surface of the sinking platform 13 is provided with a mounting hole; both ends of the central shaft 16 are provided with threads.
The processing method of the power shaft bridge comprises the following steps:
casting, marking-out, roughly milling a bottom surface 12, roughly milling a top surface, milling an end surface to form a central hole, roughly turning, primarily finishing, primarily inspecting, tempering, gas cutting and stretching ribs, secondarily finishing, primarily inspecting, semi-finely milling the bottom surface 12, semi-finely milling an installation surface 13, semi-finely milling two ends, thirdly finishing, performing magnetic powder inspection, finely milling the bottom surface 12, finely milling the installation surface 13, finely milling two ends, drilling a positioning hole, semi-finely turning, finely boring a hole, milling a key groove, finely turning and rolling, disassembling a counterweight, tapping by a wrench, finely finishing for four times, performing magnetic powder inspection and cleaning.
Station I: the product is horizontally placed, the mounting surface 13 is corrected, the axle center of the central axle at two ends of the inner gear is used as a reference, a circle of the central axle line of the axle and other all processing lines are drawn, whether the processing allowance is uniform or not is checked, the central axle is subjected to sample punching and marking, and the sample punching and marking requirements are three continuous points at small intervals;
and a station II: the method comprises the following steps of laterally placing a product, enabling a line I of an angle square calibration station to be vertical, marking a shaft center line for one circle and other all processing lines, checking whether the processing allowance is uniform, and proofing and punching marks on the center line, wherein the pattern punching marks are required to be three continuous points at small intervals;
the method comprises the steps of enabling a bottom surface 12 of a product to face upwards, enabling a supporting and installing surface 11 to be adjustable, leveling and straightening a central waist line of the product, press-fitting, fixing and re-correcting a central line, milling the bottom surface 12, two side sinking tables and a middle boss side surface 12, centering by inner gear blank sizes, and drilling installation hole through holes. Correcting the center line of the product based on the bottom surface 12 of the above processAnd (5) press fitting and fixing, and respectively milling the upper mounting surface 11 and the fixed-length reference surfaces on the two sides to the dimension required by the drawing. And (3) taking the bottom surface 12 as a reference, flatly placing the product on a workbench, correcting the central waist line of the product, rotating the workbench, ensuring that the central line of the product is parallel to the main shaft of the boring mill, flatly placing the end surfaces at two ends, setting the total length, ensuring that the central shafts 16 at two ends are symmetrical in length, and drilling central holes at two ends. Clamping one top, roughly turning the outer circles of the two ends to obtain a character pattern, unloading the product after the inspection is qualified, and placing the product in order. And removing burrs on the machined surface and chamfering edges and corners. And removing the visual defects. The ultrasonic flaw detection drawing requires key areas, and the magnetic particle flaw detection is used for detecting the whole product. Quenching and tempering according to the requirements of the axle bridge heat treatment process. The gas cutting is used for removing the anti-deformation lacing wire, and the product deformation is avoided when the gas cutting is noticed. And secondary finishing and shot blasting. Removing surface attachments such as oxide and sagging of the product. Go up the marking off platform and carry out comprehensive inspection to the product, avoid the product to warp and cause the machining allowance uneven. And (3) supporting the mounting surface 11 by using the equal-height pads, correcting and pressing, semi-finish milling the bottom surface 12, the side surface 12, the inner and outer contour machining surfaces and the middle boss side surface 12, and reserving 2mm finish machining allowance on a single side to reach the size. Correcting and pressing the machined bottom surface 12 serving as a reference, semi-finish milling the top surface, the upper mounting surface 11 and the side surface 12, reserving 2mm finish machining allowance on a single side to reach the size, and milling an end surface mounting hole to reach the size
And correcting and pressing the machined bottom surface 12 serving as a reference, semi-finish-milling two end planes and the outer contour of the shaft end, and reserving 2mm finish machining allowance on a single side to reach the size. And removing burrs on the machined surface and chamfering edges and corners. And removing the visual defects. And (5) carrying out magnetic powder flaw detection on all processing surfaces. The mounting surface 11 is used as a reference equal-height cushion for supporting, correcting and pressing products, and finely milling a bottom surface 12, a lower step surface of the sinking table 13, a side surface of the sinking table 13 and a threaded bottom hole M24 of the drilling bottom surface
And tapping, milling from the center of the shaft to the plane 184
And sinking the platform and milling the reference of the symmetrical centers of the two ends. The equal-height pad supports the lower end face of the product sinking platform and correctsCompacting the product, finish milling the upper end face of the sinking table, the arc, the upper end face with 100 dimensions and the inner gear end face 1030 of the axle, and drilling the through hole of the end face
Drilling 4XM10, 8XM16 threaded bottom holes
Pre-drilled Top surface 4XM12 threaded bottom hole
The orifice chamfer is C1. Fine boring
Through hole milling
The depth of the counter bore is 5.5. The equal-height pads support the lower end face of the sinking platform 13, a product is corrected and compressed, reference faces at two ends of the bottom face 12 are finely milled, the end face of the shaft is finely milled in a centering mode, 1mm of fine turning allowance is reserved on one side of the outer circle of the shaft end, and through holes at two ends of the center of the shaft are pre-drilled
Drill through holes at two ends of the side surface 12
The product is positioned by the bottom surface 12, is corrected and compressed in a natural state, ensures the press-fitting supporting position, is provided with a hole screw hole which is reamed by the matched drill top surface M12, is chamfered at an orifice, and is provided with a counterweight tool. Cleaning a central hole of a product, smearing a small amount of clean butter, installing a heart-shaped chuck, clamping by double tips, carrying out numerical control semi-finish turning on the shaft end profile, reserving 0.3mm finish machining allowance on a single side, turning the product around, paying attention to a copper sheet pad to protect the installed heart-shaped chuck after one end of the product is machined so as to prevent the machined surface from being damaged. Correcting the symmetrical center of the product and the excircle of the central shaft 16 at the two ends, and finely boring the shaft hole to meet the blue pattern size requirement. Two end faces of the inner stop of the drill spindle are 4XM8, 30 holes and 35 thread bottom holes
The orifice chamfer is C1. The equal-height pads support the lower end face of the product sinking platform 13, correct and tightly press the product, and mill key grooves at two ends of the shaft. Cleaning a central hole of a product, smearing a small amount of clean butter, installing a heart-shaped chuck, clamping with double tips, carrying out numerical control finish turning on the shaft end outline, carrying out thread turning M75X2-6H, closing to standard screw tip clamping, carrying out numerical control finish turning on the shaft end outline, carrying out thread turning M75X2-6H, closing to standard screw tip clamping, carrying out numerical control finish turning on the shaft end outline, carrying out thread turning M75X2-6H, closing to standard nut inspection, reserving 0.02mm allowance for rolling reinforcement for the rest of single edges, and after one end is processed, turning the product, paying attention to pad copper skin protection and installing the heart-shaped chuck so as to avoid damaging the processed surface. And correcting and pressing the product by taking the bottom surface 12 as a reference, marking on one end of the shaft end 2017 in size, uniformly loosening a counterweight tool fixing bolt at opposite angles, and recording product fluctuation data. Drilling a threaded bottom hole of the top surface 4XM16
The orifice chamfer is C1. The product is horizontally placed, protected, pressed and fixed, mechanically tapped with 4XM10, 8XM16 and 4XM16 threads, cleaned and checked by a thread plug gauge. And manually tapping 8XM84XM16 threads, cleaning, and checking by a thread plug gauge. Hand tapping 8XM8 was 30 deep. And removing the processing burrs. The edges and corners are blunt R1.5. And wiping oil stains on the processing surface of the product by using alcohol or acetone, and carrying out three-coordinate inspection on the form and position tolerance and the critical dimension of the product. And (3) blowing the surface by high-pressure wind, smearing neutral anti-rust oil on the non-painted surface, and protecting and packaging by using a bubble film. And (4) manually detecting the key size and the threaded hole of the product and recording data.
The processing method of the power shaft bridge provided by the invention is used for processing through common machining equipment, the processing cutter is a common cutter, the adjustable support and the equal-height cushion block are adopted, the processing precision is high, the cost is low, and the problem of high rejection rate in the prior art is solved.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the scope of the present description should be considered as being described in the present specification. The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (7)
1. The processing method of the power shaft bridge is characterized in that the power shaft bridge comprises a U-shaped base body, the U-shaped base body comprises an inward concave inner rail and a side surface, and the inner rail comprises an upper mounting surface and a bottom surface; sinking platforms are arranged at two ends of the U-shaped seat body; the opposite surface of the inner gear is provided with a middle boss; a central shaft is arranged on one side of the sinking platform far away from the inner stop; the central shafts are positioned on the same central line;
a first through hole is formed in the center of the central shaft; the upper end surface of the sinking platform is provided with a mounting hole; threads are arranged at two ends of the central shaft;
the processing method of the power shaft bridge comprises the following steps:
casting, marking-out, roughly milling bottom surface, roughly milling top surface, milling end surface to make central hole, roughly turning, primarily finishing, primarily detecting flaw, tempering, gas cutting and stretching ribs, secondarily finishing, primarily inspecting, semi-finely milling bottom surface, semi-finely milling mounting surface, semi-finely milling two ends, thirdly finishing, detecting magnetic powder flaw, finely milling bottom surface, finely milling mounting surface, finely milling two ends, drilling positioning hole, semi-finely turning, finely boring hole, milling key slot, finely turning and rolling, disassembling balance weight, tapping by bench work, finely finishing for four times, detecting magnetic powder flaw and cleaning.
2. The method of manufacturing a powered axle bridge of claim 1, wherein said scoring includes: station I: the product is horizontally placed, the mounting surface is corrected, the axle center of the central axle at two ends of the inner rail is used as a reference, a circle of the central axle line of the axle and other all processing lines are drawn, whether the processing allowance is uniform or not is checked, the central axle is subjected to sample punching and marking, and the sample punching and marking requirements are three continuous points at small intervals;
and a station II: the product is laterally placed, the line I of the angle square calibration station is vertical, the axis center line is drawn for a circle and other all processing lines, whether the processing allowance is uniform or not is checked, the center line is subjected to sample punching and marking, and the sample punching and marking requirements are that three continuous points are closely spaced.
3. The method of claim 1, wherein the rough milling of the bottom surface comprises orienting the bottom surface of the product upward, adjustably supporting the support mounting surface, leveling and aligning the centerline of the product, press fitting and re-aligning the centerline, milling the bottom surface, the two side sinkers, the sides of the middle boss, centering the inner blank in size, and drilling the mounting hole.
4. The processing method of the power shaft bridge according to claim 1, characterized in that the equal-height pads support the mounting surface, correct and compact, semi-finish-mill the bottom surface, the side surface, the inner and outer contour processing surface and the middle boss side surface, and reserve 2mm finish machining allowance to the size on one side; correcting and pressing the machined bottom surface serving as a reference, semi-finish milling the top surface, the upper mounting surface and the side surface, reserving 2mm finish machining allowance on a single side to reach the size, and milling end surface mounting holes to reach the size
And correcting and pressing the machined bottom surface serving as a reference, semi-finish-milling two end planes and the outer contour of the shaft end, and reserving 2mm finish machining allowance on a single side to reach the size.
5. The method for processing a power shaft bridge according to claim 1, wherein the magnetic particle inspection is performed by a magnetic particle inspection machine.
6. The method for processing a power shaft bridge according to claim 1, wherein the primary flaw detection is performed by an ultrasonic flaw detector.
7. The method for processing the power axle bridge according to claim 1, wherein the thermal treatment furnace is adopted for thermal treatment, and the thermal treatment is performed according to the thermal treatment process requirements of the axle bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010682314.XA CN113941827A (en) | 2020-07-15 | 2020-07-15 | Machining method of power shaft bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010682314.XA CN113941827A (en) | 2020-07-15 | 2020-07-15 | Machining method of power shaft bridge |
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| Publication Number | Publication Date |
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| CN113941827A true CN113941827A (en) | 2022-01-18 |
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| CN202010682314.XA Pending CN113941827A (en) | 2020-07-15 | 2020-07-15 | Machining method of power shaft bridge |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100776247B1 (en) * | 2006-08-16 | 2007-11-16 | 정기옥 | Automobile tube style axle shaft and process of manufacture |
| CN104759848A (en) * | 2015-03-31 | 2015-07-08 | 常州南车铁马科技实业有限公司 | Manufacturing method of axle for low-floor vehicle |
| CN105397429A (en) * | 2015-12-21 | 2016-03-16 | 常州南车铁马科技实业有限公司 | Mechanical processing method of axle bridge for rail vehicle |
| CN107803635A (en) * | 2017-11-24 | 2018-03-16 | 江顺精密机械装备科技江阴有限公司 | A kind of mechanical processing technique of low-floor railroad vehicle axle bridge |
| CN109789884A (en) * | 2016-08-30 | 2019-05-21 | 路奇霓Rs公司 | The Portalachse of low-floor type rail vehicle and tramcar |
-
2020
- 2020-07-15 CN CN202010682314.XA patent/CN113941827A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100776247B1 (en) * | 2006-08-16 | 2007-11-16 | 정기옥 | Automobile tube style axle shaft and process of manufacture |
| CN104759848A (en) * | 2015-03-31 | 2015-07-08 | 常州南车铁马科技实业有限公司 | Manufacturing method of axle for low-floor vehicle |
| CN105397429A (en) * | 2015-12-21 | 2016-03-16 | 常州南车铁马科技实业有限公司 | Mechanical processing method of axle bridge for rail vehicle |
| CN109789884A (en) * | 2016-08-30 | 2019-05-21 | 路奇霓Rs公司 | The Portalachse of low-floor type rail vehicle and tramcar |
| CN107803635A (en) * | 2017-11-24 | 2018-03-16 | 江顺精密机械装备科技江阴有限公司 | A kind of mechanical processing technique of low-floor railroad vehicle axle bridge |
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