CN110480288A - A kind of processing method of the finish forge mould of tibial plateau joint prosthesis - Google Patents
A kind of processing method of the finish forge mould of tibial plateau joint prosthesis Download PDFInfo
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- CN110480288A CN110480288A CN201910726789.1A CN201910726789A CN110480288A CN 110480288 A CN110480288 A CN 110480288A CN 201910726789 A CN201910726789 A CN 201910726789A CN 110480288 A CN110480288 A CN 110480288A
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- 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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Abstract
The present invention provides a kind of processing methods of the finish forge mould of tibial plateau joint prosthesis, structure is complicated for its finish forge mould that can solve existing tibial plateau joint prosthesis, processing request is high, using more than conventional die processing method not only work step and complicated, but also it is difficult to ensure that dimensional accuracy and surface quality qualification problem.It is the following steps are included: step 1, blanking；Step 2 carries out roughing and semifinishing to the shape of die blank；Step 3 carries out roughing to bar portion type chamber and flatbed chamber on die blank；Step 4 is quenched die blank；Step 5 finishes the shape of die blank；Step 6 carries out semifinishing and finishing to flatbed chamber and bar portion type chamber using high speed Milling Machining；Step 7 finishes alar part type chamber using electrode machining；Step 8 carries out pincers and repairs to the tool marks that connect of high speed Milling Machining and electrode machining；Step 9 integrally carries out Nitrizing Treatment to mold.
Description
Technical field
The present invention relates to the manufacture field of finish forge mould, specially a kind of finish forge mould of tibial plateau joint prosthesis adds
Work method.
Background technique
Tibial plateau joint prosthesis is the substitute in human body knee joint after tibial plateau damage, can be carried out by operation
Implantation improves patients ' life quality to restore function of joint.Fig. 1 and Fig. 2 is a kind of tibial plateau prosthetic joint implants
Structural schematic diagram comprising platform 1, alar part 2 and bar portion 3, the side of platform 1 are provided with U-lag 4.
With the continuous development of society, tibial plateau prosthetic joint implants fine forge piece using more and more extensive, and it is smart
Size, the shape of forging are guaranteed by finish forge mould.The type chamber of tibial plateau joint prosthesis finish forge mould is by up and down
Flatbed chamber, alar part type chamber and bar portion type chamber composition, each type chamber is made of different curved surfaces, and bar portion type chamber is in very deep
Heart hole, alar part type chamber is deep and narrow, and the bottom curve form of alar part type chamber is complicated, depth and its cross-sectional width of various chamber
Ratio reaches 6 or more, and difficulty of processing is very big, meanwhile, finish forge mould is also very high to dimensional accuracy and surface quality requirements, uses
When conventional die processing method is processed, not only work step is more and complicated, but also it is difficult to ensure that dimensional accuracy and surface quality are qualified.
Summary of the invention
For the finish forge mould of tibial plateau joint prosthesis, structure is complicated, and processing request is high, uses conventional mold processing
Not only work step is more and complicated for method, but also it is difficult to ensure that dimensional accuracy and surface quality qualification technical problem, present invention offer
A kind of processing method of the finish forge mould of tibial plateau joint prosthesis, work step is simple, can reduce die manufacturing cycle and at
This, while can effectively ensure that mold machining accuracy and surface quality meet the requirements.
The processing method that its technical solution is such that a kind of finish forge mould of tibial plateau joint prosthesis, feature exist
In comprising following steps:
Step 1, blanking carry out blanking to mould steel pole material and obtain die blank；
Step 2 carries out roughing and semifinishing to the shape of die blank, and the shape after semifinishing is relative to theoretical size
There are machining allowance；
Step 3 carries out roughing, bar portion type chamber and platform after roughing to bar portion type chamber and flatbed chamber on die blank
There are machining allowance relative to theoretical size for type chamber；
Step 4 is quenched die blank, and detects quenched die blank hardness, size and surface quality, sentences
It is disconnected whether to meet the requirements；
Step 5 finishes the shape of die blank；
Step 6 carries out semifinishing and finishing to flatbed chamber and bar portion type chamber using high speed Milling Machining；
Step 7 finishes alar part type chamber using electrode machining；
Step 8 carries out pincers and repairs to the tool marks that connect of high speed Milling Machining and electrode machining；
Step 9 integrally carries out Nitrizing Treatment to mold, so far completes the processing of mold.
It is further characterized by:
In step 2, shape after semifinishing is unilateral 0.3mm ~ 0.7mm relative to the machining allowance that theoretical size reserves.
In step 3, bar portion type chamber after roughing relative to the machining allowance that theoretical size reserves be unilateral 0.9mm ~
1.1mm, flatbed chamber after roughing are unilateral 0.8mm ~ 1.5mm relative to the machining allowance that theoretical size reserves.
In step 2 and step 5, equipment used in roughing, semifinishing and the finishing of the shape of die blank is equal
For numerically controlled lathe；In step 3, the equipment that the roughing of bar portion type chamber uses is drilling machine, and what the roughing of flatbed chamber used sets
Standby is numerical control machining center.
In step 4, it is quenched and is handled for vacuum hardening, the hardness number of quenched die blank is HRC55 ~ HRC58,
The deflection of quenched die blank is no more than 0.01mm, and the surface of quenched die blank does not have oxide skin.
In step 5, die shape after finishing, thereon, the flatness of lower plane and its depth of parallelism control is in 0.02mm
Within, the degree control of cylindrical surface and bottom surface is within 0.05mm.
In step 6, the cutter revolving speed of high speed Milling Machining is 15000rpm ~ 20000rpm.
In step 6, the concentricity of bar portion type chamber and mold outer circle after finishing controls the step 6 within the scope of 0.02mm
Die size precision after finishing should reach 0.02mm, and surface roughness should reach 1.6 μm.
In step 7, electrode machining includes extensive electric machining and low gap essence electro-discharge machining, after low gap essence electro-discharge machining
Die size precision should reach 0.01mm, and surface roughness should reach 1.6 μm.
Nitrided case depth is 0.2mm in step 9.
The beneficial effects of the present invention are:
The processing method of the finish forge mould of tibial plateau joint prosthesis of the invention, by being quenched and being returned to die blank
After fire processing, then finishing processing is carried out to die blank, and in finishing, high speed Milling Machining and electrode machining perfection are had
Machine combines, and effectively ensures mold machining accuracy and connects remaining position at tool marks except high speed Milling Machining and electrode machining
Surface quality, and the surface quality of high speed Milling Machining and electrode machining connect at tool marks then passes through pincers repairs and guaranteed, thus
Effectively ensure that the machining accuracy of mold entirety and surface quality meet design requirement；It, can be significantly by quenching and Nitrizing Treatment
Die surface hardness and wear-resisting property are improved, mold processing quality and die life are improved；Also, the method for the present invention technique
Step is simple, is greatly improved production efficiency, reduces die manufacturing cost.
Detailed description of the invention
Fig. 1 is the main view of tibial plateau joint prosthesis；
Fig. 2 is the bottom view of Fig. 1；
Fig. 3 is the top view of die blank when step 3 of the present invention completes the process；
Fig. 4 is the cross-sectional view of the line A-A along Fig. 3；
Fig. 5 is the top view for the tibial plateau joint prosthesis finish forge mould that the present invention processes；
Fig. 6 is the cross-sectional view of the line B-B along Fig. 5.
Specific embodiment
A kind of processing method of the finish forge mould of tibial plateau joint prosthesis of the invention comprising following steps:
Step 1, blanking take the mould steel pole material for not doing and being quenched, and blanking is carried out by the way of sawing machine blanking and obtains mould
Has blank；
Step 2 carries out roughing and half finishing using shape (including bottom surface, side and top surface) of the numerically controlled lathe to die blank
Work, shape after semifinishing are unilateral 0.3mm ~ 0.7mm relative to the machining allowance that theoretical size reserves, and die blank
The flatness and its depth of parallelism of bottom surface and top surface control within 0.02mm, the degree control of side and bottom surface 0.05mm with
It is interior；
Step 3 carries out roughing to bar portion type chamber 5 and flatbed chamber 6 on die blank；When bar portion pocket machining, with mold
The blank bottom surface center of circle is origin, and using drilling machine at die blank bottom surface drill centers (i.e. bar portion type chamber), central hole size is opposite
In the machining allowance that theoretical size reserves be unilateral 0.9mm ~ 1.1m；When platform pocket machining, it is with the die blank top surface center of circle
Origin, using numerical control machining center roughing flatbed chamber, the flatbed chamber after roughing adds relative to what theoretical size reserved
Spare time amount is unilateral 0.8mm ~ 1.5mm；The structure of die blank is as shown in Figure 3, Figure 4 at this time；In order to improve mold pressing process
The consistency of middle multiple clamping, can shift to an earlier date die blank top surface process a depth 5mm step 8, for the ease of processing with
It calculates, step is parallel with the u-shaped bottom of flatbed chamber, so that step can be used as X axis benchmark；
Step 4 carries out vacuum hardening processing to die blank, and detects die blank hardness, size and table after vacuum hardening
The hardness number of face quality, quenched die blank is HRC55 ~ HRC58, and the deflection of quenched die blank is no more than
The surface of 0.01mm, quenched die blank do not have oxide skin；By using vacuum heat treatment, it is greatly improved heat treatment matter
Amount, deformation is small, and achievees the effect that surface-brightening purifies；
Step 5 is finished, the top surface and bottom of the die blank after finishing using shape of the numerically controlled lathe to die blank
Facial plane degree and its depth of parallelism control are within 0.02mm, and the degree control of side and bottom surface is within 0.05mm；
Step 6 carries out semifinishing and finishing to flatbed chamber and bar portion type chamber using high speed Milling Machining, high speed Milling Machining
Cutter revolving speed is 15000rpm ~ 20000rpm；Preferably, after the completion of the finishing of flatbed chamber, bar portion type chamber is finished；Flatbed
The machining tool of chamber preferably uses high hardness, oxidation resistance temperature height and the good φ 2mm hard alloy bulb cutter of wearability；Bar portion type
The machining tool of chamber preferably uses the φ 10mm extended type hard alloy vertical milling that hardness is high, oxidation resistance temperature is high and wearability is good
Knife, extended type carbide end mill select multiple-cutting-edge tool, blade long 40mm, overall length 100mm, which is suitable for High-speed machining,
And rigidity is good, can reduce relieving amount when side cut to the maximum extent, the bar portion of slotting cutter can add work close to blade one end
The minor diameter of 20mm long avoids section, it is possible to prevente effectively from interference；Hard alloy bulb cutter and carbide end mill all have
The heat resistance and wearability of cutter can be improved in XCP coating；The concentricity control of bar portion type chamber and mold outer circle after finishing exists
Within the scope of 0.02mm, the die size precision after finishing should reach 0.02mm, and surface roughness should reach 1.6 μm；
Step 7 finishes alar part type chamber 7 using electrode machining, and electrode machining includes extensive electric machining and low gap essence
Electro-discharge machining may make the imitative type precision of alar part type chamber to further increase by replacing the different same type chambers of electrode machining；
Wherein, low gap essence electro-discharge machining electrode select red metal, red metal have good electric conductivity, processing loss is small, can obtain compared with
High precision；Discharging gap is 0.1mm, and the die size precision after low gap essence electro-discharge machining should reach 0.01mm, and surface is thick
Rugosity should reach 1.6 μm；Electrode machining and Milling Machining junction only slightly connect tool marks；
Step 8 carries out pincers and repairs to the tool marks that connect of high speed Milling Machining and electrode machining, and pincers are repaired using import abrasive pastes, as is produced from the U.S.
AKAY-8000, pincers, which are repaired, to be followed by reaching mirror effect at knife；
Step 9 integrally carries out Nitrizing Treatment, nitrided case depth 0.2mm to mold；Nitrizing Treatment strengthens nitriding using gas,
The enhancing of die surface hardness, wearability can be made to improve, while there is good resultant force under the premise of ensuring mould and die accuracy
Performance is learned, the service life of mold is improved；So far the processing of mold is completed, final mould structure is as shown in Figure 5, Figure 6.
In High Speed Milling Operation process, since die blank height is higher, and entire type chamber will be finished, it is preferred to use
Strength disk adsorbs die blank, then is processed.What needs to be explained here is that step 5 is after processing is completed die blank
Iron filings, dust of bottom surface etc. are blown clean, and burr removal is clean, bottom surface wiped clean before High Speed Milling Operation on die blank；Often
Strength disk wiped clean will be polished strong magnetic dish platform face convex portion with oilstone before secondary clamping；Die blank is direct
It is adsorbed on strong magnetic dish platform face.
Above-mentioned quenching, tempering, electrode machining, Nitrizing Treatment technological parameter all in accordance with specific die steel material depending on,
Using common process.
Below with several specific embodiments finish forge mould processing method that the present invention will be described in detail.
Embodiment 1
The processing method of the finish forge mould of tibial plateau joint prosthesis comprising following steps:
Step 1, blanking take the mould steel pole material for not doing and being quenched, and blanking is carried out by the way of sawing machine blanking and obtains mould
Has blank, blank dimension are as follows: φ 155mm*75mm；
Step 2 carries out roughing and semifinishing using shape of the numerically controlled lathe to die blank, the shape phase after semifinishing
The machining allowance reserved for theoretical size is unilateral 0.3mm, and the bottom surface of die blank and the flatness of top surface and its parallel
Degree control is within 0.02mm, and the degree control of side and bottom surface is within 0.05mm；
Step 3 carries out roughing to bar portion type chamber and flatbed chamber on die blank；When bar portion pocket machining, with mold hair
The base bottom surface center of circle is origin, and using drilling machine in die blank bottom surface drill centers, central hole size is reserved relative to theoretical size
Machining allowance be unilateral 0.9mm；When platform pocket machining, using the die blank top surface center of circle as origin, using in numerical control processing
It is careless or thoughtless by nature processing platform type chamber, the flatbed chamber after roughing is unilateral 0.8mm relative to the machining allowance that theoretical size reserves；
Step 4 carries out vacuum hardening processing to die blank, and detects die blank hardness, size and table after vacuum hardening
The hardness number of face quality, quenched die blank is HRC55 ~ HRC58, and the deflection of quenched die blank is no more than
The surface of 0.01mm, quenched die blank do not have oxide skin；
Step 5 is finished, the top surface and bottom of the die blank after finishing using shape of the numerically controlled lathe to die blank
Facial plane degree and its depth of parallelism control are within 0.02mm, and the degree control of side and bottom surface is within 0.05mm；
Step 6 successively adds flatbed chamber and the progress semifinishing of bar portion type chamber and finishing, High Speed Milling Operation using high speed Milling Machining
The cutter revolving speed of work is 15000rpm；The machining tool of flatbed chamber is high using hardness, oxidation resistance temperature is high and the good φ of wearability
2mm hard alloy bulb cutter；The φ that the machining tool of bar portion type chamber is high using hardness, oxidation resistance temperature is high and wearability is good
10mm extended type carbide end mill, extended type carbide end mill select multiple-cutting-edge tool, the long 40mm of blade, overall length
The bar portion of 100mm, slotting cutter avoid section close to the minor diameter of the additional work 20mm long in blade one end；Hard alloy bulb cutter and hard
Matter alloy slotting cutter all has XCP coating；The concentricity of bar portion type chamber and mold outer circle after finishing is controlled in 0.02mm model
In enclosing, the die size precision after finishing should reach 0.02mm, and surface roughness should reach 1.6 μm；
Step 7 finishes alar part type chamber using electrode machining, and electrode machining includes that extensive electric machining and low gap essence are put
Electric machining；Wherein, the electrode of low gap essence electro-discharge machining selects red metal, discharging gap 0.1mm, after low gap essence electro-discharge machining
Die size precision should reach 0.01mm, surface roughness should reach 1.6 μm；Electrode machining and Milling Machining junction are only light
It is micro- to connect tool marks；
Step 8 carries out pincers and repairs to the tool marks that connect of high speed Milling Machining and electrode machining, and pincers, which are repaired, produces AKAY-8000 grinding using the U.S.
Cream, pincers, which are repaired, to be followed by reaching mirror effect at knife；
Step 9 integrally carries out gas reinforcing Nitrizing Treatment, nitrided case depth 0.2mm to mold.
Embodiment 2
The processing method of the finish forge mould of tibial plateau joint prosthesis comprising following steps:
Step 1, blanking take the mould steel pole material for not doing and being quenched, and blanking is carried out by the way of sawing machine blanking and obtains mould
Has blank, blank dimension are as follows: φ 155mm*75mm；
Step 2 carries out roughing and semifinishing using shape of the numerically controlled lathe to die blank, the shape phase after semifinishing
The machining allowance reserved for theoretical size is unilateral 0.5mm, and the bottom surface of die blank and the flatness of top surface and its parallel
Degree control is within 0.02mm, and the degree control of side and bottom surface is within 0.05mm；
Step 3 carries out roughing to bar portion type chamber and flatbed chamber on die blank；When bar portion pocket machining, with mold hair
The base bottom surface center of circle is origin, and using drilling machine in die blank bottom surface drill centers, central hole size is reserved relative to theoretical size
Machining allowance be unilateral 1.0mm；When platform pocket machining, using the die blank top surface center of circle as origin, using in numerical control processing
It is careless or thoughtless by nature processing platform type chamber, the flatbed chamber after roughing is unilateral 1.15mm relative to the machining allowance that theoretical size reserves；
Step 4 carries out vacuum hardening processing to die blank, and detects die blank hardness, size and table after vacuum hardening
The hardness number of face quality, quenched die blank is HRC55 ~ HRC58, and the deflection of quenched die blank is no more than
The surface of 0.01mm, quenched die blank do not have oxide skin；
Step 5 is finished, the top surface and bottom of the die blank after finishing using shape of the numerically controlled lathe to die blank
Facial plane degree and its depth of parallelism control are within 0.02mm, and the degree control of side and bottom surface is within 0.05mm；
Step 6 successively adds flatbed chamber and the progress semifinishing of bar portion type chamber and finishing, High Speed Milling Operation using high speed Milling Machining
The cutter revolving speed of work is 17500rpm；The machining tool of flatbed chamber is high using hardness, oxidation resistance temperature is high and the good φ of wearability
2mm hard alloy bulb cutter；The φ that the machining tool of bar portion type chamber is high using hardness, oxidation resistance temperature is high and wearability is good
10mm extended type carbide end mill, extended type carbide end mill select multiple-cutting-edge tool, the long 40mm of blade, overall length
The bar portion of 100mm, slotting cutter avoid section close to the minor diameter of the additional work 20mm long in blade one end；Hard alloy bulb cutter and hard
Matter alloy slotting cutter all has XCP coating；The concentricity of bar portion type chamber and mold outer circle after finishing is controlled in 0.02mm model
In enclosing, the die size precision after finishing should reach 0.02mm, and surface roughness should reach 1.6 μm；
Step 7 finishes alar part type chamber using electrode machining, and electrode machining includes that extensive electric machining and low gap essence are put
Electric machining；Wherein, the electrode of low gap essence electro-discharge machining selects red metal, discharging gap 0.1mm, after low gap essence electro-discharge machining
Die size precision should reach 0.01mm, surface roughness should reach 1.6 μm；Electrode machining and Milling Machining junction are only light
It is micro- to connect tool marks；
Step 8 carries out pincers and repairs to the tool marks that connect of high speed Milling Machining and electrode machining, and pincers, which are repaired, produces AKAY-8000 grinding using the U.S.
Cream, pincers, which are repaired, to be followed by reaching mirror effect at knife；
Step 9 integrally carries out gas reinforcing Nitrizing Treatment, nitrided case depth 0.2mm to mold.
Embodiment 3
The processing method of the finish forge mould of tibial plateau joint prosthesis comprising following steps:
Step 1, blanking take the mould steel pole material for not doing and being quenched, and blanking is carried out by the way of sawing machine blanking and obtains mould
Has blank, blank dimension are as follows: φ 155mm*75mm；
Step 2 carries out roughing and semifinishing using shape of the numerically controlled lathe to die blank, the shape phase after semifinishing
The machining allowance reserved for theoretical size is unilateral 0.7mm, and the bottom surface of die blank and the flatness of top surface and its parallel
Degree control is within 0.02mm, and the degree control of side and bottom surface is within 0.05mm；
Step 3 carries out roughing to bar portion type chamber and flatbed chamber on die blank；When bar portion pocket machining, with mold hair
The base bottom surface center of circle is origin, and using drilling machine in die blank bottom surface drill centers, central hole size is reserved relative to theoretical size
Machining allowance be unilateral 1.1mm；When platform pocket machining, using the die blank top surface center of circle as origin, using in numerical control processing
It is careless or thoughtless by nature processing platform type chamber, the flatbed chamber after roughing is unilateral 1.5mm relative to the machining allowance that theoretical size reserves；
Step 4 carries out vacuum hardening processing to die blank, and detects die blank hardness, size and table after vacuum hardening
The hardness number of face quality, quenched die blank is HRC55 ~ HRC58, and the deflection of quenched die blank is no more than
The surface of 0.01mm, quenched die blank do not have oxide skin；
Step 5 is finished, the top surface and bottom of the die blank after finishing using shape of the numerically controlled lathe to die blank
Facial plane degree and its depth of parallelism control are within 0.02mm, and the degree control of side and bottom surface is within 0.05mm；
Step 6 successively adds flatbed chamber and the progress semifinishing of bar portion type chamber and finishing, High Speed Milling Operation using high speed Milling Machining
The cutter revolving speed of work is 20000rpm；The machining tool of flatbed chamber is high using hardness, oxidation resistance temperature is high and the good φ of wearability
2mm hard alloy bulb cutter；The φ that the machining tool of bar portion type chamber is high using hardness, oxidation resistance temperature is high and wearability is good
10mm extended type carbide end mill, extended type carbide end mill select multiple-cutting-edge tool, the long 40mm of blade, overall length
The bar portion of 100mm, slotting cutter avoid section close to the minor diameter of the additional work 20mm long in blade one end；Hard alloy bulb cutter and hard
Matter alloy slotting cutter all has XCP coating；The concentricity of bar portion type chamber and mold outer circle after finishing is controlled in 0.02mm model
In enclosing, the die size precision after finishing should reach 0.02mm, and surface roughness should reach 1.6 μm；
Step 7 finishes alar part type chamber using electrode machining, and electrode machining includes that extensive electric machining and low gap essence are put
Electric machining；Wherein, the electrode of low gap essence electro-discharge machining selects red metal, discharging gap 0.1mm, after low gap essence electro-discharge machining
Die size precision should reach 0.01mm, surface roughness should reach 1.6 μm；Electrode machining and Milling Machining junction are only light
It is micro- to connect tool marks；
Step 8 carries out pincers and repairs to the tool marks that connect of high speed Milling Machining and electrode machining, and pincers, which are repaired, produces AKAY-8000 grinding using the U.S.
Cream, pincers, which are repaired, to be followed by reaching mirror effect at knife；
Step 9 integrally carries out gas reinforcing Nitrizing Treatment, nitrided case depth 0.2mm to mold.
Claims (10)
1. a kind of processing method of the finish forge mould of tibial plateau joint prosthesis, it is characterised in that: itself the following steps are included:
Step 1, blanking carry out blanking to mould steel pole material and obtain die blank；
Step 2 carries out roughing and semifinishing to the shape of die blank, and the shape after semifinishing is relative to theoretical size
There are machining allowance；
Step 3 carries out roughing, bar portion type chamber and platform after roughing to bar portion type chamber and flatbed chamber on die blank
There are machining allowance relative to theoretical size for type chamber；
Step 4 is quenched die blank, and detects quenched die blank hardness, size and surface quality, sentences
It is disconnected whether to meet the requirements；
Step 5 finishes the shape of die blank；
Step 6 carries out semifinishing and finishing to flatbed chamber and bar portion type chamber using high speed Milling Machining；
Step 7 finishes alar part type chamber using electrode machining；
Step 8 carries out pincers and repairs to the tool marks that connect of high speed Milling Machining and electrode machining；
Step 9 integrally carries out Nitrizing Treatment to mold, so far completes the processing of mold.
2. a kind of processing method of the finish forge mould of tibial plateau joint prosthesis according to claim 1, it is characterised in that:
In step 2, shape after semifinishing is unilateral 0.3mm ~ 0.7mm relative to the machining allowance that theoretical size reserves.
3. a kind of processing method of the finish forge mould of tibial plateau joint prosthesis according to claim 1 or 2, feature exist
In: in step 3, bar portion type chamber after roughing is unilateral 0.9mm ~ 1.1mm relative to the machining allowance that theoretical size reserves, slightly
Flatbed chamber after processing is unilateral 0.8mm ~ 1.5mm relative to the machining allowance that theoretical size reserves.
4. a kind of processing method of the finish forge mould of tibial plateau joint prosthesis according to claim 1, it is characterised in that:
In step 2 and step 5, equipment used in roughing, semifinishing and the finishing of the shape of die blank is numerical control lathe
Bed；In step 3, the equipment that the roughing of bar portion type chamber uses is drilling machine, and the equipment that the roughing of flatbed chamber uses is numerical control
Machining center.
5. a kind of processing method of the finish forge mould of tibial plateau joint prosthesis according to claim 1, it is characterised in that:
It in step 4, is quenched and is handled for vacuum hardening, the hardness number of quenched die blank is HRC55 ~ HRC58, quenched
The deflection of die blank is no more than 0.01mm, and the surface of quenched die blank does not have oxide skin.
6. a kind of processing method of the finish forge mould of tibial plateau joint prosthesis according to claim 1, it is characterised in that:
In step 5, die shape after finishing, thereon, the flatness of lower plane and its depth of parallelism control within 0.02mm, cylinder
The degree control of face and bottom surface is within 0.05mm.
7. a kind of processing method of the finish forge mould of tibial plateau joint prosthesis according to claim 1, it is characterised in that:
In step 6, the cutter revolving speed of high speed Milling Machining is 15000rpm ~ 20000rpm.
8. a kind of processing method of the finish forge mould of tibial plateau joint prosthesis according to claim 1, it is characterised in that:
In step 6, the concentricity of bar portion type chamber and mold outer circle after finishing is controlled within the scope of 0.02mm, after step 6 finishing
Die size precision should reach 0.02mm, surface roughness should reach 1.6 μm.
9. a kind of processing method of the finish forge mould of tibial plateau joint prosthesis according to claim 1, it is characterised in that:
In step 7, electrode machining includes extensive electric machining and low gap essence electro-discharge machining, the die size after low gap essence electro-discharge machining
Precision should reach 0.01mm, and surface roughness should reach 1.6 μm.
10. a kind of processing method of the finish forge mould of tibial plateau joint prosthesis according to claim 1, feature exist
In: nitrided case depth is 0.2mm in step 9.
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| CN201910726789.1A CN110480288B (en) | 2019-08-07 | 2019-08-07 | Machining method of precision forging die for tibial platform artificial joint |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113369833A (en) * | 2021-06-28 | 2021-09-10 | 宁波江丰复合材料科技有限公司 | Processing method of hot-pressing die |
| CN114228064A (en) * | 2022-02-21 | 2022-03-25 | 赫比(成都)精密塑胶制品有限公司 | Point pouring gate processing method, point pouring gate processing equipment and mold with point pouring gate |
| CN115070365A (en) * | 2022-06-29 | 2022-09-20 | 宁波富信模胚有限公司 | Processing method of die blank hot runner plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113369833A (en) * | 2021-06-28 | 2021-09-10 | 宁波江丰复合材料科技有限公司 | Processing method of hot-pressing die |
| CN114228064A (en) * | 2022-02-21 | 2022-03-25 | 赫比(成都)精密塑胶制品有限公司 | Point pouring gate processing method, point pouring gate processing equipment and mold with point pouring gate |
| CN114228064B (en) * | 2022-02-21 | 2022-05-06 | 赫比(成都)精密塑胶制品有限公司 | Point pouring gate machining method, point pouring gate machining equipment and mold with point pouring gate |
| CN115070365A (en) * | 2022-06-29 | 2022-09-20 | 宁波富信模胚有限公司 | Processing method of die blank hot runner plate |
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