CN102813581A - High-precision turning body for integrally processed medical wheelchair and processing method for high-precision turning body - Google Patents

High-precision turning body for integrally processed medical wheelchair and processing method for high-precision turning body Download PDF

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Publication number
CN102813581A
CN102813581A CN2012103150887A CN201210315088A CN102813581A CN 102813581 A CN102813581 A CN 102813581A CN 2012103150887 A CN2012103150887 A CN 2012103150887A CN 201210315088 A CN201210315088 A CN 201210315088A CN 102813581 A CN102813581 A CN 102813581A
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China
Prior art keywords
bearing block
front fork
processing
turning body
axle center
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Application number
CN2012103150887A
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Chinese (zh)
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CN102813581B (en
Inventor
鄭博文
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MINGDA ALUMINUM TECHNOLOGY (TAICANG) Co Ltd
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MINGDA ALUMINUM TECHNOLOGY (TAICANG) Co Ltd
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Priority to CN201210315088.7A priority Critical patent/CN102813581B/en
Publication of CN102813581A publication Critical patent/CN102813581A/en
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Abstract

The invention discloses a high-precision turning body for an integrally processed medical wheelchair and a processing method for the high-precision turning body. The turning body comprises a front fork, a bearing block, an axle center, bearings and nuts, wherein the axle center penetrates through the front fork and the bearing block and is fixed with the front fork and the bearing block through the nut on the lower surface of the front fork and the nut on the upper surface of the bearing block; the four bearings are distributed on the bearing block and are symmetrical relative to the axle center; and the front fork and the bearing block are integrally formed in a squeezed manner, so that the front fork and the bearing block are fixed relatively. The problem that a gap is formed due to improper assembly so that the high-precision turning body deflects in an advancing process is avoided. The processing method includes steps of designing, squeezing, semi-finished product saw cutting, finished product saw cutting, quenching, artificial aging, rough milling, boring, drilling, fine milling, anode processing and the like. By the processing technology, the turning precision of the medical wheelchair can be improved, efficiency is improved, and cost is reduced.

Description

One is processed medical wheelchair and is turned to body and processing method thereof with high accuracy
Technical field
The invention belongs to field of medical, relate to medical wheelchair, be specifically related to a kind of one and process medical wheelchair and turn to body and processing method thereof with high accuracy.
Background technology
Wheelchair is the important tool of rehabilitation, and it is not only the walking-replacing tool of limbs the disabled, the more important thing is to make them carry out physical exercise and participate in social activity by means of wheelchair.According to appraisal agency of the United Nations statistics, people with a disability across the world's sum surpasses 600,000,000 at present, accounts for 10% of world population, and the annual disabled number that increases is 1,500 ten thousand.About 20% needs wheelchair among them, the same whole world more than 60 years old the old people surpass 600,000,000, and just in cumulative year after year, the year two thousand twenty will rise to 1,000,000,000, much human also needs wheelchair among them.Therefore the space that utilizes of wheelchair will be expanded, and becomes this colony gradually and carries instrument as recovery and healthy with the master of the traffic of riding instead of walk.
The traditional steering structure (accompanying drawing 1 and accompanying drawing 2) of medical treatment wheelchair is combined by a front fork and a bearing block; Form a universal wheel; Two processing respectively; Be fixed on the front fork with nut through an axle center again and connect both, adopt this structure and method product processed because joint gap and machining accuracy problem may beat occur and cause direction to squint in the process of advancing.
Summary of the invention
In order to overcome the deficiency of prior art, the invention provides the medical wheelchair that a kind of Shi Buhui of advancing causes the one processing of skew and turn to body with high accuracy.
The present invention also provides a kind of medical wheelchair of one processing to turn to the processing method of body with high accuracy.
To achieve these goals; The medical wheelchair of one processing of the present invention turns to body to comprise front fork, bearing block, axle center, bearing and nut with high accuracy; The axle center is run through front fork and bearing block and is fixed through two nuts on front fork lower surface and the bearing block upper surface; Four relative axle center of bearing are symmetrically distributed on the bearing block, and wherein front fork and bearing block are one-body molded through extruding, make the relative position of front fork and bearing block fix.
According to the size of the front fork that will use set out the front fork sectional view, the thickening of the stationary plane of front fork, draw extrusion section bar again.After squeezing out section bar according to normal extrusion process, sawing is done Quenching Treatment to regular length as requested, carries out machined after the timeliness, carries out turnning and milling and cuts processing, obtains the profile of desired bearing block band front fork, and final anode is handled.
Specifically may further comprise the steps:
1, design: the overall dimensions according to front fork is designed the cross section;
2, extruding: 460~510 ℃ of extrusion temperatures, extrusion speed 2.0~6.0mm/s, air-cooled;
3, semi-finished product sawing: according to the semi-finished product length sawing of setting;
4, finished product sawing: according to the profile of converted products, grab out saw cutting angle, accomplish sawing by CAD figure shelves;
5, quench: product hollow is partly upwards put in calabash butterfly cage, put into 520~530 ℃ of heating of glowing furnace, constant temperature is transferred in the liquid coolant fast after 3 hours and is cooled off, 300 ℃/minute of rate of cooling;
6, artificial aging: put product into aging furnace, 185 ℃ heated up 6 hours Ageing Treatment of constant temperature 2 hours;
7, rough mill processing: 2 feeds, the 10mm depth of cut, amount of feeding F0.2, speed of mainshaft S1200 milling profile;
8, bore hole processing: 3 feeds, the 8mm depth of cut, amount of feeding F0.2, speed of mainshaft S1200 machining bearing hole;
9, boring processing: 2 feeds, the 8.2mm depth of cut, amount of feeding F200, speed of mainshaft S1500;
10, finish-milling processing: 2 feeds, the 4mm depth of cut, amount of feeding F500, speed of mainshaft S2400;
11, anode processing: with product earlier after defat, washing, alkali cleaning, washing, neutralization, burn into washing, electrolysis, washing, sealing of hole, wash and dry processing.
Turn to body through pushing integrated medical wheelchair with high accuracy; The face thickness that structure is compared front fork fixed axis in the past strengthens; The relative position of front fork and bearing block is fixing, as long as can not form the process offset direction that causes advancing, gap after guaranteeing machining accuracy then wheelchair being formed because of the assembly problem between front fork and the bearing block, adopts this processing technique can promote the precision that turns to of medical wheelchair simultaneously; Promote efficient, reduced cost.
Description of drawings
Fig. 1 be the traditional medical wheelchair turn to the body sketch map;
Fig. 2 be the traditional medical wheelchair turn to the body longitudinal sectional drawing;
Fig. 3 is that the medical wheelchair of one processing of the present invention turns to the body sketch map with high accuracy;
Fig. 4 is that the medical wheelchair of one processing of the present invention turns to the body longitudinal sectional drawing with high accuracy.
The specific embodiment
Below in conjunction with embodiment one of the present invention being processed medical wheelchair turns to body and processing method thereof to set forth in detail with high accuracy; Thereby protection scope of the present invention is made more explicit defining so that advantage of the present invention and characteristic can be easier to it will be appreciated by those skilled in the art that.
As attach shown in Fig. 1 and 2; The body that turns to of traditional medical wheelchair is made up of front fork 11, bearing block 12, nut 13, bearing 14 and axle center 15; Front fork 11 is processed respectively with bearing block 12, through an axle center 15 with last in following 3 nuts 13 fixedly front fork 11 and bearing block 12 respectively, even machining accuracy reach the required standards; Still exist joint gap, the process of advancing may beat occur and cause the direction skew.
Accompanying drawing 3 and 4 is that the medical wheelchair of novel one processing of the present invention turns to body with high accuracy; Comprise front fork 1, bearing block 2, nut 3, bearing 4 and axle center 5; Front fork 1 and bearing block 2 and fixing through two nuts on front fork 1 lower surface and bearing block 2 upper surfaces 3 are run through in axle center 5; Four bearing 4 relative axle center 5 are symmetrically distributed on the bearing block 2; Front fork 1 be the integral body of one machine-shaping with bearing block 2, and the face thickness of fixed axis also strengthens, as long as guarantee can not form because of the assembly problem between front fork and the bearing block behind the then medical wheelchair composition of machining accuracy the process offset direction that causes advancing, gap.
The medical wheelchair that specifies one processing with a following example turns to the processing method of body with high accuracy.
1, design
Overall dimensions according to front fork is designed the cross section;
2, extruding
460~510 ℃ of extrusion temperatures, extrusion speed 2.0~6.0mm/s (main frame pace) adopts air-cooledly, prevents to export refractory wool and damages;
3, semi-finished product sawing
According to the sawing of technique initialization semi-finished product length;
4, finished product sawing
According to the profile of converted products, grab out saw cutting angle by CAD figure shelves, accomplish sawing by sawing oblique buck at a high speed;
5, quench
Product hollow is partly upwards put in calabash butterfly cage, put into glowing furnace heating, 520~530 ℃ of heating-up temperatures, constant temperature is transferred to product in the liquid coolant fast with calabash butterfly cage after 3 hours and is cooled off 300 ℃/minute of rate of cooling;
6, artificial aging
Put product into the aging furnace Ageing Treatment, adopt 185 ℃ to heat up 6 hours technology Ageing Treatment of constant temperature 2 hours;
7, rough mill processing
Adopt special fixture to be clamped in milling profile on the milling machine, 2 feeds, the 10mm depth of cut, amount of feeding F0.2, speed of mainshaft S1200;
8, bore hole processing
Product is clamped in the lathe machining bearing hole of getting on the bus, 3 feeds, the 8mm depth of cut, amount of feeding F0.2, speed of mainshaft S1200;
9, boring processing:
Adopt special fixture to be clamped on the milling machine 2 feeds, the 8.2mm depth of cut, amount of feeding F200, speed of mainshaft S1500;
10, finish-milling processing
Adopt special fixture to be clamped on the milling machine 2 feeds, the 4mm depth of cut, amount of feeding F500, speed of mainshaft S2400;
11, anode processing
With product earlier after defat, washing, alkali cleaning, washing, neutralization, burn into washing, electrolysis, washing, sealing of hole, wash and dry processing.

Claims (2)

1. an one is processed medical wheelchair and is turned to body with high accuracy; Comprise front fork (1), bearing block (2), nut (3), bearing (4) and axle center (5); Front fork (1) and bearing block (2) and fixing through two nuts (3) on front fork (1) lower surface and bearing block (2) upper surface are run through in axle center (5); Four bearings (4) are symmetrically distributed on the bearing block (2) in axle center (5) relatively, and it is characterized in that: described front fork (1) and bearing block (2) are the integral body of one machine-shaping.
2. a claim requires 1 described one to process medical wheelchair and turns to the processing method of body with high accuracy, it is characterized in that may further comprise the steps:
A, design: the overall dimensions according to front fork is designed the cross section;
B, extruding: 460~510 ℃ of extrusion temperatures, extrusion speed 2.0~6.0mm/s, air-cooled;
C, semi-finished product sawing: according to the semi-finished product length sawing of setting;
D, finished product sawing: according to the profile of converted products, grab out saw cutting angle, accomplish sawing by CAD figure shelves;
E, quenching: product hollow is partly upwards put in calabash butterfly cage, put into 520~530 ℃ of heating of glowing furnace, constant temperature is transferred in the liquid coolant fast after 3 hours and is cooled off, 300 ℃/minute of rate of cooling;
F, artificial aging: put product into aging furnace, 185 ℃ heated up 6 hours Ageing Treatment of constant temperature 2 hours;
G, rough mill processing: 2 feeds, the 10mm depth of cut, amount of feeding F0.2, speed of mainshaft S1200 milling profile;
H, bore hole processing: 3 feeds, the 8mm depth of cut, amount of feeding F0.2, speed of mainshaft S1200 machining bearing hole;
I, boring processing: 2 feeds, the 8.2mm depth of cut, amount of feeding F200, speed of mainshaft S1500;
J, finish-milling processing: 2 feeds, the 4mm depth of cut, amount of feeding F500, speed of mainshaft S2400;
The processing of k, anode: with product earlier after defat, washing, alkali cleaning, washing, neutralization, burn into washing, electrolysis, washing, sealing of hole, wash and dry processing.
CN201210315088.7A 2012-08-30 2012-08-30 High-precision turning body for integrally processed medical wheelchair and processing method for high-precision turning body Active CN102813581B (en)

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Application Number Priority Date Filing Date Title
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CN102813581B CN102813581B (en) 2014-12-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111761299A (en) * 2020-03-31 2020-10-13 江苏贵钰航空工业有限公司 Process for preparing part by using numerical control drilling and milling

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2034947U (en) * 1988-02-11 1989-03-29 胡祥春 New-type tricycle
GB2287437A (en) * 1992-11-14 1995-09-20 Dennis Alfred Dunn Method and apparatus for joining two bicycles
JPH11301562A (en) * 1998-04-15 1999-11-02 Suzuki Motor Corp Steering device of motorcycle
CN101480773A (en) * 2009-01-22 2009-07-15 苏州利达铸造有限公司 Method for processing bearing support
CN102602489A (en) * 2012-03-29 2012-07-25 深圳市科美特机械设备有限公司 Integrally-formed front fork and manufacturing method thereof
CN202740260U (en) * 2012-08-30 2013-02-20 明达铝业科技(太仓)有限公司 Integrally processed high-precision steering body for medical wheel chair

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2034947U (en) * 1988-02-11 1989-03-29 胡祥春 New-type tricycle
GB2287437A (en) * 1992-11-14 1995-09-20 Dennis Alfred Dunn Method and apparatus for joining two bicycles
JPH11301562A (en) * 1998-04-15 1999-11-02 Suzuki Motor Corp Steering device of motorcycle
CN101480773A (en) * 2009-01-22 2009-07-15 苏州利达铸造有限公司 Method for processing bearing support
CN102602489A (en) * 2012-03-29 2012-07-25 深圳市科美特机械设备有限公司 Integrally-formed front fork and manufacturing method thereof
CN202740260U (en) * 2012-08-30 2013-02-20 明达铝业科技(太仓)有限公司 Integrally processed high-precision steering body for medical wheel chair

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111761299A (en) * 2020-03-31 2020-10-13 江苏贵钰航空工业有限公司 Process for preparing part by using numerical control drilling and milling

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