CN105127695A - One-time forming quick processing method applicable to medical tweezers or clip - Google Patents
One-time forming quick processing method applicable to medical tweezers or clip Download PDFInfo
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- CN105127695A CN105127695A CN201510676537.4A CN201510676537A CN105127695A CN 105127695 A CN105127695 A CN 105127695A CN 201510676537 A CN201510676537 A CN 201510676537A CN 105127695 A CN105127695 A CN 105127695A
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- processing method
- medical
- folder
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B9/00—Hand-held gripping tools other than those covered by group B25B7/00
- B25B9/02—Hand-held gripping tools other than those covered by group B25B7/00 without sliding or pivotal connections, e.g. tweezers, onepiece tongs
Abstract
The invention belongs to the field of medical instrument manufacturing, and particularly relates to a one-time forming quick processing method applicable to a pair of medical tweezers or a medical clip. The method comprises the following steps: directly casting the shape dimension and the position dimension of sheet bodies in the finished product tweezers or the clip by adopting a metal powder injection forming technology, then performing thermal treatment and surface treatment on the sheet body in sequence, riveting the left sheet body and the right sheet body to obtain the tweezers or clip finished product, and finishing the finished product. The conventional processing method for a clamping instrument such as the medical tweezers or the medical clip is reformed, so that the problems of low processing precision, complicated working procedure, long period and high cost of the conventional processing method for the medical tweezers or the medical clip are solved, the flow of the product processing technology is simplified, the production period is shortened, and one-time forming quick processing of the medical tweezers or the medical clip is realized; meanwhile, the labor intensity and the production cost are reduced, and the processing precision is improved.
Description
Technical field
The present invention relates to the manufacturing process of a kind of medical forceps or folder, be specifically related to a kind of one-shot forming fast processing method being applicable to medical forceps or folder, belong to medicine equipment and manufacture field.
Background technology
Medical forceps (folder) are one of operating theater instruments the most frequently used in operation, and clinical demand amount is large.The batch machining of current domestic medical forceps (folder) is based on methods such as roll-in, forging and stamping, machineds, need in process to carry out the multiple working procedure such as milling lip head tooth (or hook), mill casting skin, polishing, scratch brushing, pickling, press-bending, shaping, complex procedures, process-cycle is long, precision is low, cost is high, and the artificial workload participated in is large, labour intensity is high, artificial mismachining tolerance is large, cause the geomery of product and position dimension uniformity poor, product quality is very unstable.
Metallic powder injection moulding process is a kind of high-new near-net-shape technology PM technique combined with plastic injection moulding process; it has the incomparable advantage of conventional powder metallurgical, hot investment casting and machine-tooled method; the product that planform complexity, required precision are high can be made; and various process based prediction model is more excellent; steady quality; when production in enormous quantities, large-scale production, cost can significantly reduce.
But it does not also obtain in medicine equipment manufacture field extensively should have, a very large reason is the particularity that the manufacturing technique requirent of medicine equipment has self, especially medical forceps (folder), good intensity and elasticity should be had, stable chucking power size, yield strength is not less than 1000MPa, and hardness is generally 40 ~ 45HRC; Resistance to corrosion is strong; Product surface is smooth, and roughness Ra is not more than 0.8 μm; Lip head tooth (hook) should have the good accuracy of mesh, and when namely product with two pieces is mediated, lip head tooth fits like a glove the length planted agent of its full-depth tooth long 2/3rds downwards from head end, must not open one's mouth.Technological requirement corresponding to medical forceps (folder) key technology performance requirement limit metal powder metallurgy technique flexible, effectively apply.
Summary of the invention
According to above deficiency of the prior art, the technical problem to be solved in the present invention is: provide a kind of one-shot forming fast processing method being applicable to medical forceps or folder, can simplify product processing technique flow process, shortens the production cycle, improve machining accuracy, and reduce labour intensity and production cost.
The one-shot forming fast processing method being applicable to medical forceps or folder of the present invention, tweezer or folder are made up of the lamellar body that left and right two panels is identical, the head end of lamellar body has lip head tooth, tail end has two riveted holes, left and right two lamellar bodies carry out diplopore by two rivets and are fixedly connected with, and the procedure of processing of above-mentioned tweezer or folder is as follows:
1. metal powder injection molding: adopt metallic powder injection moulding process directly to cast to finished product tweezer or the geomery and the position dimension that press from both sides median plate body;
2. lamellar body is heat-treated:
First carry out solution treatment---1050 ± 5 DEG C of heating, insulation 2 ~ 3h, afterwards oil quenching or air cooling;
Carry out Ageing Treatment again---470 ± 10 DEG C of heating, insulation 6 ~ 8h, afterwards air cooling;
3. carry out surface treatment to lamellar body: cutting edge of a knife or a sword rib, burr, the oxide-film of first removing surface of the work, then carry out surface finish, cleaning, roughness Ra is not more than 0.8 μm;
4. by left and right two lamellar body riveted joints, tweezer or folder finished product is obtained: first the rivet of riveted joint is carried out sofening treatment, then by two rivets, left and right two lamellar bodies are riveted face-to-face;
5. finished product finishing: carry out tooth process to the tweezer of having riveted or folder finished product, after ensureing that left and right two lamellar bodies are closed, lip head tooth fits like a glove downwards from head end in the length of its full-depth tooth long 2/3rds, must not open one's mouth.
The present invention directly casts geomery to finished product and position dimension by adopting metallic powder injection moulding process, machining accuracy can be made up to 0.1mm on the one hand, and postorder processing obviously can not change geomery and the position dimension of product, part geometry error is not more than 0.1mm, position dimension error is not more than 0.5mm, therefore improve machining accuracy and product quality on the whole, eliminate milling lip head tooth (or hook) on the other hand, mill casting skin, polishing, scratch brushing, pickling, bend, the mechanical process operation that the multiple tracks such as shaping manually participate in, thus reduce the labour intensity of workman, shorten the process-cycle, improve operating efficiency, production cost is also significantly reduced.
Preferably, riveted holes opens 15 ~ 25 ° of chamferings; Rivet adopts stainless steel.
Preferably, step 1. in the metal dust that adopts in metallic powder injection moulding process be high-pressure atomization 17-4PH stainless steel attritive powder, and through accurate rational Technology for Heating Processing, make product have good intensity and elasticity.
Preferably, 3. step adopts magnetic force glossing, by magnetic force polisher by removal surface of the work cutting edge of a knife or a sword rib, burr, oxide-film and surface finish, each operation of cleaning is disposable completes.For the medical forceps or the folder that require not reflecting surface, need step 3. in matting after, carry out the sub-light process of bead sandblasting to the lateral surface of lamellar body, after process, roughness Ra is not more than 0.8 μm.
Preferably, step 4. in riveted joint adopt automatic riveter to carry out cold roll riveted joint, riveted joint is fast, accurately, greatly simplify the technological processes such as machined, surface treatment and pincers worker shaping, correspondingly, shorten the process-cycle, improve operating efficiency.
To sum up, the one-shot forming rapid processing of medical forceps or folder can be realized by the present invention, be applicable to producing in enormous quantities, to meet the demand (medical forceps or be clipped in being in great demand in clinical operation) of medical forceps or folder in clinical operation.
The beneficial effect that the present invention is compared with prior art had is:
1, simplify work flow, shorten the process-cycle.This processing method adopts metallic powder injection moulding process directly to cast geomery to finished product and position dimension, adopt that magnetic force polisher goes cutting edge of a knife or a sword rib, burr, oxide skin and surface finish, flushing is disposable completes, automatic rotary riveted joint is adopted to rivet fast, accurately, greatly simplify the technological processes such as machined, surface treatment and pincers worker shaping, correspondingly, shorten the process-cycle, improve operating efficiency.
2, labour intensity is reduced.Compared with traditional processing mode, this processing method eliminates the operation that the multiple tracks such as milling lip head tooth (or hook), mill casting skin, polishing, scratch brushing, pickling, press-bending, shaping manually participates in, and the amount of labour of workman is significantly reduced.
3, improve machining accuracy, product quality.Metallic powder injection moulding process is adopted directly to cast geomery to finished product and position dimension, machining accuracy is up to 0.1mm, and postorder processing obviously can not change geomery and the position dimension of product, part geometry error is not more than 0.1mm, position dimension error is not more than 0.5mm, metal dust adopts high-pressure atomization 17-4PH stainless steel attritive powder, and through accurate reasonably Technology for Heating Processing, product has good intensity and elasticity.
4, production cost is considerably reduced.Medical forceps (folder) are in great demand in clinical operation, are applicable to producing in enormous quantities, and because processing process is simplified, the production cycle reduces further, and the labour intensity of staff is also reduced, thus production cost is significantly reduced.
5, improve product aesthetic property.Owing to decreasing artificial degree of participation, reduce artificial mismachining tolerance, the geomery of product is more consistent with position dimension, and profile more Jiamei is seen.
Detailed description of the invention
Below embodiments of the invention are described further:
Processing method of the present invention is mainly for the medical forceps of following version or folder: the lamellar body identical by left and right two panels forms, the head end of lamellar body has lip head tooth, tail end has two riveted holes, and left and right two lamellar bodies carry out diplopore by two stainless steel rivets and are fixedly connected with.The step being applicable to the one-shot forming fast processing method of above-mentioned medical forceps or folder is as follows:
1. metal powder injection molding: adopt metallic powder injection moulding process directly to cast to finished product tweezer or the geomery and the position dimension that press from both sides median plate body.The metal dust adopted in metallic powder injection moulding process is high-pressure atomization 17-4PH stainless steel attritive powder, it has the performance characteristics of uniform composition, dense structure, and be adjusted to shaped piece intensity rank by variation Technology for Heating Processing, to realize good comprehensive mechanical property, product is made to have good intensity and elasticity; This material, compared with medical forceps (folder) conventional bar section of stainless steel 2Cr13,1Cr18Ni9, has better corrosion-resistant and anti-fatigue performance.
2. lamellar body is heat-treated: first carry out solution treatment---1052 DEG C of heating, insulation 2.6h, nitrogen cooling afterwards; Carry out Ageing Treatment again---477 DEG C of heating, insulation 7.2h, afterwards air cooling.Can obtain even tissue, densification and the workpiece of all higher comprehensive mechanical property of intensity, toughness by this heat treatment, hardness range is HRC40 ~ 45.
3. surface treatment is carried out to lamellar body: first adopt magnetic force polisher by removal surface of the work cutting edge of a knife or a sword rib, burr, oxide-film and surface finish, each operation of cleaning is disposable completes.
4. by a left side, right two lamellar body riveted joints, obtain tweezer or folder finished product: first the stainless steel rivet of riveted joint is carried out sofening treatment, rivet plasticity through sofening treatment is higher, be easy to during riveted joint fill up riveted holes, riveted holes opens 15 ~ 25 ° of chamferings, the axial thrust load that fillet surface applies rivet is little, rivet more solid and reliable, riveted joint smooth surface is smooth, riveted joint speed is fast, precision is high, prevent riveting askew, riveting is discontented with, the riveted joint such as loosing of rivet distortion defect produces, then two stainless steel rivets are passed through to a left side, right two lamellar bodies are riveted face-to-face, carry out diplopore riveted joint with two stainless steel rivets and can prevent a left side, right two lamellar bodies rotate around a rivet, utilize automatic riveter quick during riveted joint, accurate cold roll is riveted, greatly simplify machined, the technological processes such as surface treatment and pincers worker shaping, correspondingly, shorten the process-cycle, improve operating efficiency.
5. finished product finishing: carry out tooth process to the tweezer of having riveted or folder finished product, after ensureing that left and right two lamellar bodies are closed, lip head tooth fits like a glove downwards from head end in the length of its full-depth tooth long 2/3rds, must not open one's mouth.
For the medical forceps or the folder that require not reflecting surface, need step 3. in matting after, the sub-light process of bead sandblasting is carried out to the lateral surface of lamellar body, the average blasting treatment time is 5 ~ 15min, simple to operate, cost is low, pollution-free, and workpiece is indeformable, do not affect precision, low without the need to plating, roughness, after process, roughness Ra is not more than 0.8 μm.
The present invention directly casts geomery to finished product and position dimension by adopting metallic powder injection moulding process, machining accuracy can be made up to 0.1mm on the one hand, and postorder processing obviously can not change geomery and the position dimension of product, part geometry error is not more than 0.1mm, position dimension error is not more than 0.5mm, therefore improve machining accuracy and product quality on the whole, eliminate milling lip head tooth (or hook) on the other hand, mill casting skin, polishing, scratch brushing, pickling, bend, the mechanical process operation that the multiple tracks such as shaping manually participate in, thus reduce the labour intensity of workman, shorten the process-cycle, improve operating efficiency, production cost is also significantly reduced.
To sum up, the one-shot forming rapid processing of medical forceps or folder can be realized by the present invention, it not only increases the machining accuracy of medical forceps or folder, more simplifies processing process, shortens the production cycle, considerably reduce the production cost of product, through cost accounting, after producing by this process lot, its cost is only 1/2 of classical production process, when production in enormous quantities reaches more than 10,000, production cost can reduce further.Therefore the present invention is applicable to producing in enormous quantities very much, to meet the demand (medical forceps or be clipped in being in great demand in clinical operation) of medical forceps or folder in clinical operation.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the prerequisite not departing from the technology of the present invention principle, can also make several improvements and modifications, these improvements and modifications all should be considered as protection scope of the present invention.
Claims (7)
1. one kind is applicable to the one-shot forming fast processing method of medical forceps or folder, it is characterized in that: tweezer or folder are made up of the lamellar body that left and right two panels is identical, the head end of lamellar body has lip head tooth, tail end has two riveted holes, left and right two lamellar bodies carry out diplopore by two rivets and are fixedly connected with, and the procedure of processing of above-mentioned tweezer or folder is as follows:
1. metal powder injection molding: adopt metallic powder injection moulding process directly to cast to finished product tweezer or the geomery and the position dimension that press from both sides median plate body;
2. lamellar body is heat-treated:
First carry out solution treatment---1050 ± 5 DEG C of heating, insulation 2 ~ 3h, afterwards oil quenching or air cooling;
Carry out Ageing Treatment again---470 ± 10 DEG C of heating, insulation 6 ~ 8h, afterwards air cooling;
3. carry out surface treatment to lamellar body: cutting edge of a knife or a sword rib, burr, the oxide-film of first removing surface of the work, then carry out surface finish, cleaning, roughness Ra is not more than 0.8 μm;
4. by left and right two lamellar body riveted joints, tweezer or folder finished product is obtained: first the rivet of riveted joint is carried out sofening treatment, then by two rivets, left and right two lamellar bodies are riveted face-to-face.
5. finished product finishing: carry out tooth process to the tweezer of having riveted or folder finished product, after ensureing that left and right two lamellar bodies are closed, lip head tooth fits like a glove downwards from head end in the length of its full-depth tooth long 2/3rds.
2. the one-shot forming fast processing method being applicable to medical forceps or folder according to claim 1, is characterized in that: described riveted holes opens 15 ~ 25 ° of chamferings.
3. the one-shot forming fast processing method being applicable to medical forceps or folder according to claim 1, is characterized in that: described rivet adopts stainless steel.
4. the one-shot forming fast processing method being applicable to medical forceps or folder according to claim 1,2 or 3, is characterized in that: described step 1. in the metal dust that adopts in metallic powder injection moulding process be high-pressure atomization 17-4PH stainless steel attritive powder.
5. the one-shot forming fast processing method being applicable to medical forceps or folder according to claim 1,2 or 3, it is characterized in that: 3. described step adopts magnetic force glossing, by removal surface of the work cutting edge of a knife or a sword rib, burr, oxide-film and surface finish, each operation of cleaning is disposable completes.
6. the one-shot forming fast processing method being applicable to medical forceps or folder according to claim 5, it is characterized in that: described step 3. in, after a washing process, carry out the sub-light process of bead sandblasting to the lateral surface of lamellar body, after process, roughness Ra is not more than 0.8 μm.
7. the one-shot forming fast processing method being applicable to medical forceps or folder according to claim 1,2 or 3, is characterized in that: described step 4. in riveted joint adopt automatic riveter carry out cold roll riveted joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510676537.4A CN105127695A (en) | 2015-10-16 | 2015-10-16 | One-time forming quick processing method applicable to medical tweezers or clip |
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| CN201510676537.4A CN105127695A (en) | 2015-10-16 | 2015-10-16 | One-time forming quick processing method applicable to medical tweezers or clip |
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| CN105127695A true CN105127695A (en) | 2015-12-09 |
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| CN201510676537.4A Pending CN105127695A (en) | 2015-10-16 | 2015-10-16 | One-time forming quick processing method applicable to medical tweezers or clip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602478A (en) * | 2019-02-12 | 2019-04-12 | 滕跃晖 | New medical tool and its manufacturing method |
| CN109865987A (en) * | 2018-12-29 | 2019-06-11 | 于恩忠 | A kind of processing method and diathermy forceps of combined type bipolar coagulation forceps |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3866324A (en) * | 1972-11-22 | 1975-02-18 | Julius Walser | Dental forceps |
| CN2576193Y (en) * | 2002-11-20 | 2003-10-01 | 朱爱莲 | Medical sterilized forceps |
| CN102041453A (en) * | 2009-10-22 | 2011-05-04 | 湖南海旭实业集团有限公司 | Novel wear-resisting and corrosion-resisting stainless steel and production process thereof |
| CN102335745A (en) * | 2011-10-26 | 2012-02-01 | 湖南瀚德微创医疗科技有限公司 | Method for preparing disposable minimally invasive surgical scissor blades |
| CN103706793A (en) * | 2013-12-18 | 2014-04-09 | 潍坊学院 | Preparation method of low-nickel high-nitrogen austenitic stainless steel product |
| CN203710110U (en) * | 2014-01-09 | 2014-07-16 | 杨丰贤 | Emergency department pharyngeal foreign body extractor |
| CN204500881U (en) * | 2015-02-10 | 2015-07-29 | 常州瑞捷生物科技有限公司 | Ultrasonic cut hemostatic cutter |
-
2015
- 2015-10-16 CN CN201510676537.4A patent/CN105127695A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3866324A (en) * | 1972-11-22 | 1975-02-18 | Julius Walser | Dental forceps |
| CN2576193Y (en) * | 2002-11-20 | 2003-10-01 | 朱爱莲 | Medical sterilized forceps |
| CN102041453A (en) * | 2009-10-22 | 2011-05-04 | 湖南海旭实业集团有限公司 | Novel wear-resisting and corrosion-resisting stainless steel and production process thereof |
| CN102335745A (en) * | 2011-10-26 | 2012-02-01 | 湖南瀚德微创医疗科技有限公司 | Method for preparing disposable minimally invasive surgical scissor blades |
| CN103706793A (en) * | 2013-12-18 | 2014-04-09 | 潍坊学院 | Preparation method of low-nickel high-nitrogen austenitic stainless steel product |
| CN203710110U (en) * | 2014-01-09 | 2014-07-16 | 杨丰贤 | Emergency department pharyngeal foreign body extractor |
| CN204500881U (en) * | 2015-02-10 | 2015-07-29 | 常州瑞捷生物科技有限公司 | Ultrasonic cut hemostatic cutter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865987A (en) * | 2018-12-29 | 2019-06-11 | 于恩忠 | A kind of processing method and diathermy forceps of combined type bipolar coagulation forceps |
| CN109602478A (en) * | 2019-02-12 | 2019-04-12 | 滕跃晖 | New medical tool and its manufacturing method |
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Application publication date: 20151209 |
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