CN101850400B - Processing method for cone frustum-shaped product with inside teeth and front cover of brake slack adjuster - Google Patents
Processing method for cone frustum-shaped product with inside teeth and front cover of brake slack adjuster Download PDFInfo
- Publication number
- CN101850400B CN101850400B CN 201010149904 CN201010149904A CN101850400B CN 101850400 B CN101850400 B CN 101850400B CN 201010149904 CN201010149904 CN 201010149904 CN 201010149904 A CN201010149904 A CN 201010149904A CN 101850400 B CN101850400 B CN 101850400B
- Authority
- CN
- China
- Prior art keywords
- forging
- tooth
- blank
- processing method
- blocking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention provides a processing method for a cone frustum-shaped product with inside teeth and a front cover of a brake slack adjuster. The processing method comprises the following steps: determining the size of a bar stock and blanking; putting the bar stock at the center of the hohlform of the lower die of a forging die, utilizing a press machine to drive a finish forging terrace die sleeved in the upper die ring of the forging die to contact with the bar stock, extruding the bar stock for molding, and then ejecting a molded blank out of the forging die; and putting the molded blank into the hohlform of the lower die of a tooth forging die, utilizing the press machine to drive a teeth forging terrace die sleeved in the upper die ring of the tooth forging die to extrude the molded blank in a titling manner, and finally molding the forging teeth to produce the cone frustum-shaped product with the inside teeth. The process scheme of the invention blanks less materials in practical production, has high accuracy of forged piece size and can sufficiently ensure the performance and size requirements of products. In addition, the scheme of the invention does not need the trimming process and can reduce the possibility of defect generation, thus improving production efficiency.
Description
Technical field
The present invention relates to areas of information technology, particularly relate to the processing method of the toothed truncated cone product in a kind of inside, and a kind of lock accent device protecgulum with preceding method processing.
Background technology
It is inner toothed product that the railway freight-car lock is transferred device protecgulum product, and Fig. 1-a, 1-b and 1-c show right view, front view and the left view that lock is transferred device protecgulum product respectively; In the product shown in this figure; The total length of product is 126mm, and the diameter of interior cylinder and height are respectively 84mm, 65mm, and the width of three outer ribs of rectangle is 42mm; The diameter of outside cylinder is 52mm, and positive six prismatic height (orthohexagonal inscribe diameter of a circle) are 62mm.Prior art is general to adopt following two kinds of processing technologys to produce this lock accent device protecgulum product.
Scheme one: adopt casting technique, promptly carry out global formation through smart casting, method is that liquid metal is poured in the sand mold die cavity through the supercooling aftershaping.The shortcoming of this programme is: in the process of pouring into a mould and solidifying, inevitably can produce metal owing to each one is uneven in temperature in the equal problem of each several part flowing velocity, be very easy to the generation internal flaw, and form as-cast structure.Because this lock accent device protecgulum product in use present position is the connecting portion of brake apparatus; The quality of its quality has constituted certain influence to safe driving; So after train operation a period of time, promptly need in time change, use for maintenance and bring many inconvenience to changing parts.
Scheme two: use fly press and die hammer and carry out the method that overlap forges, in the forging process, need hold excess metal, after forging is shaped to blank, unnecessary overlap is removed through the side cut mode by flash gutters.The shortcoming of this scheme is: adopt general die forging mode cutting stock weight bigger, and there is the bigger overlap operation of need cutting edge in forging, and time-consuming; In addition, owing to need adopt closed-die forging, lead lock even increase, still unavoidably produce the mismatch phenomenon, therefore need the allowance of reservation also bigger, working (machining) efficiency is low.
Summary of the invention
Technical problem to be solved by this invention provides the processing method of the toothed truncated cone product in a kind of inside, and can solve prior art needs more raw material and the low problem of working (machining) efficiency.
The present invention also provides a kind of lock with preceding method processing to transfer device protecgulum product, to guarantee the application of said method in reality.
In order to address the above problem, the invention discloses the processing method of the toothed truncated cone product in a kind of inside, comprising:
Blanking step: confirm bar size and blanking; The bar length-to-diameter that blanking produces is 2.5～5;
Heating steps: the bar of blanking generating step is heated to 1200～1250 ℃ with induction heater;
The step of pre-upsetting: the counterdie impression of the bar of said blanking generating step being put into the blocking mould; Driving said Upper Die-sleeve with forcing press moves downward with the blocking punch that is enclosed within the Upper Die-sleeve together; Above-mentioned bar is squeezed into fully in the impression of said counterdie, the blocking blank after by knock-pin blocking being accomplished then ejects;
Extrusion modling step: the counterdie center of die cavity place that the blocking blank of the said generating step of pre-upsetting is placed on the forging mould; The finish-forging punch that drives in the Upper Die-sleeve that is sleeved on the forging mould with forcing press contacts with said blocking blank; And, then molded blank is ejected the forging mould with the extrusion modling of said blocking blank;
Forge the tooth step: said molded blank is put into the counterdie impression of forging the tooth mould; Drive the forging tooth punch that is sleeved in the Upper Die-sleeve of forging the tooth mould with forcing press said molded blank is carried out oblique extruding; Finish-forging tooth moulding generates the toothed truncated cone product in said inside.
Preferably, the hitting power of equipment is 75.6 tons in the said blocking jumping-up step.
Preferably, after said extrusion modling step, also comprise in the circle procedure of processing: the inner cylinder body region of the blank of extrusion modling further is processed as the size near final products.
Preferably, also comprise local eddy-current heating step before the said forging tooth step: position local heat to 850～900 ℃ that the blank of extrusion modling need be forged tooth with the induced inside firing equipment.
Preferably, the hitting power of equipment is 50 tons in the said forging tooth step.
Preferably, the hitting power of equipment is 1500 tons in the said extrusion modling step.
Preferably, said forcing press is a high power screw press, and the weight of the toothed truncated cone product in said inside is less than 20 kilograms, and ratio of height to diameter is less than 1.2.
The invention also discloses a kind of lock and transfer the device protecgulum, adopt the processing method extrusion forging of the toothed truncated cone product in above-mentioned inside to form.
Compared with prior art, the present invention has the following advantages:
At first, the present invention adopts the Forging Technology scheme, through pushing directly internal tooth is forged out, in actual production blanking few, the forging ' s block dimension precision is high, can fully guarantee the product size requirement; Pass through the reasonable distribution forging flow lines in the extrusion forging process, can improve the intensity and the internal soundness of product greatly, thereby make the inner band of this product tooth position can bear bigger drag and the permanent good performance of production run assurance product of ability.
Secondly, the present invention program can reduce the possibility that produces defective because of not needing trimming technology, and has therefore improved production efficiency.
The 3rd, adopt extrusion forging technology to absorb because of the distortion of the energy of equipment by forging, therefore little to the damage of mould and equipment, die life is long.
The 4th, adopt fashion of extrusion to forge, there is not the mismatch phenomenon in direct extrusion modling during owing to solid forging, and semifinished product precision is high.
Description of drawings
Fig. 1-a, 1-b and 1-c are respectively right view, front view and the left views that existing railway freight-car lock is transferred device protecgulum product;
Fig. 2 is the processing method flow chart of the inner toothed truncated cone product of the present invention;
Fig. 3 is the bar size sketch map that a kind of lock of the present invention transfers the processing of device protecgulum to be adopted;
Fig. 4-a is that a kind of lock of the present invention transfers device protecgulum upsetting mould to form sketch map;
Fig. 4-b is the blank front view that a kind of lock of the present invention transfers the upsetting of device protecgulum to be shaped;
Fig. 4-c is the blank shape sketch map that a kind of lock of the present invention transfers the upsetting of device protecgulum to be shaped;
Fig. 4-d is that a kind of lock of the present invention is transferred the time dependent curve synoptic diagram of device protecgulum upsetting process hitting power;
Fig. 5-a is that a kind of lock of the present invention transfers device protecgulum finish-forging mould to form sketch map;
Fig. 5-b-a and 5-b-b are respectively blank front view and the left views that a kind of lock of the present invention transfers device protecgulum finish-forging to be shaped;
Fig. 5-c is the finish-forging blank shape sketch map that a kind of lock of the present invention is transferred device protecgulum finish-forging extrusion molding;
Fig. 5-d is that a kind of lock of the present invention is transferred the time dependent curve synoptic diagram of device protecgulum finish-forging extrusion process hitting power;
Fig. 6-a and 6-b are respectively finish-forging blank front view and the left views after a kind of lock of the present invention is transferred the processing of device protecgulum;
Fig. 7-a is that a kind of lock of the present invention transfers the device protecgulum to forge tooth mould composition sketch map;
Fig. 7-b-a, 7-b-b and 7-b-c are respectively right view, front view and the left views that a kind of lock of the present invention is transferred device protecgulum final products;
Wherein, the 1-Upper Die-sleeve, 21-blocking punch, 22-finish-forging punch, 23-forges tooth punch, 3-counterdie, 4-knock-pin, 5-locating piece, equally distributed 60 teeth of 6-.
The specific embodiment
With reference to Fig. 2, show the processing method one embodiment flow process of the inner toothed truncated cone product of the present invention, specifically comprise following processing step:
Step 101: confirm bar size and blanking;
Wherein, blanking deviation is positive and negative 1mm;
Bar size calculation method can be calculated according to the weight after the moulding of product blank, and adopts bar under the sawing of high speed band saw;
Step 102: the counterdie center of die cavity place that the bar of step 101 generation is placed on the forging mould; The finish-forging punch 22 that drives in the Upper Die-sleeve that is sleeved on the forging mould with forcing press contacts with above-mentioned bar; And, then molded blank is ejected the forging mould with above-mentioned bar extrusion modling;
Step 103: the molded blank that step 102 produces is put into the counterdie impression of forging the tooth mould, drive the 23 pairs of above-mentioned molded blanks of forging tooth punch that are sleeved in the Upper Die-sleeve of forging the tooth mould with forcing press and carry out oblique extruding, finish-forging tooth moulding.
For convenient above-mentioned forging tooth extrusion process and improve the quality of product; Put into the impression of forging tooth mould at the molded blank that step 103 produces step 102 after; To above-mentioned molded blank with the induced inside firing equipment carry out local heat to 850～900 ℃, and then the forging tooth forming process of carrying out oblique extruding.
In another preferred embodiment of the embodiment of the invention; For the upset ratio (length-to-diameter) that solves the raw material of growing excellent type exceeds rational upset ratio (2.5～5); Thereby the problem that causes bar when moulding, bending to take place and can't moulding before step 102, also comprises blocking jumping-up step: the bar that step 101 is produced is put into the impression of the counterdie 3 of blocking mould; Driving Upper Die-sleeve 1 with forcing press moves downward with the blocking punch 21 that is enclosed within the Upper Die-sleeve 1 together; Above-mentioned bar is squeezed in the impression of counterdie 3, push the forging moulding, the molded blank after by knock-pin 4 blocking being accomplished then ejects.Through this blocking step, but the reasonable distribution blank helps the forging molding of subsequent handling.
Be convenient above-mentioned blocking upsetting process, can the bar that step 101 produces be heated with induction heater that preferred heating-up temperature is 1200～1250 ℃.
In an also preferred embodiment of the embodiment of the invention; For making the size of final products more accurate; And make things convenient for the finish-forging tooth of subsequent step 103, after step 102 is accomplished finish forging, the forging tooth inner circular part position of the blank of step 103 extrusion modling is further processed.
Below, transferring device protecgulum product with the lock shown in Fig. 1-a, 1-b and the 1-c is example, specifies the processing method of the inner toothed truncated cone product of the present invention.In this preferred embodiment; It is 126mm that the lock of final molding is transferred the total length of device protecgulum product; The diameter of interior cylinder and height are respectively 84mm, 65mm; The width of three outer ribs of rectangle is 42mm, and the diameter of outside cylinder is 52mm, and positive six prismatic height (orthohexagonal inscribe diameter of a circle) are 62mm.
Step 1: adopt high speed band saw sawing;
Step 2: adopt induction heater to heat;
For diameter is the bar of 60mm, long 285mm, can produce less iron scale 8～9 minutes heat time heating times of induction heater, and temperature can reach 1200～1250 ℃.
Step 3: the bar after will heating is placed into and carries out jumping-up processing in the upsetting mould;
Wherein, the composition of upsetting mould is shown in Fig. 4-a, and blocking punch 21 is enclosed within the Upper Die-sleeve 1, moves downward together with bar to contact, and it is squeezed in the counterdie 3, after blocking is accomplished, by knock-pin 4 it is ejected.
Upset force can calculate: the equipment hitting power is 75.6 tons according to numerical simulation during jumping-up; Fig. 4-c and Fig. 4-d are molded blank and hitting power curves in the numerical simulation process; Can find out from the hitting power curve shown in Fig. 4-d; When time duration to 0.263 second, the pressure that is added on the upper and lower mould of upsetting mould is 765000 Ns (promptly 76.5 tons), is added in the pressure 0 on the workpiece.
Because this product blanking is long rod type, its upset ratio 285/60=4.75 has exceeded rational upset ratio 2.5～3, so just can not directly push the upsetting moulding, otherwise can make bar when moulding, bending take place and can't moulding.Therefore in the middle of this, increase by one upsetting operation, through bar shown in Figure 3 upsetting in mould shown in Fig. 4-a is become blank shape shown in Fig. 4-b, through forward extrusion moulding reasonable distribution blank, help follow-up forging molding.Above-mentioned blocking process preferably adopts 2500 tons of high power screw presses to carry out forging.
Step 4: the molded blank behind the jumping-up is placed into carries out extrusion molding in the finish-forging mould;
Blank behind the process blocker forging; Compound extrusion forming is carried out in the finish impression of after ejecting mechanism ejects, putting into shown in Fig. 5-a; When placing, need blank is positioned over the center of die cavity place, the blank after the forging is shown in Fig. 5-b-a and 5-b-b; Wherein, Fig. 5-b-a and 5-b-b are respectively the front view and the left views of finish-forging blank.Above-mentioned finish-forging process preferably adopts 2500 tons of high power screw presses to carry out forging.
Wherein, the finish-forging punch 22 of finish-forging mould is enclosed within the Upper Die-sleeve 1, and Upper Die-sleeve 1 is fixing by locating piece 5 with finish-forging punch 22; Move downward together; Contact with the blocker forging blank, it is squeezed in the counterdie 3, the finish-forging blank that finish-forging is accomplished the back generation is ejected it by knock-pin 4.
Extruding force can be calculated: the equipment hitting power is 1500 tons according to numerical simulation during extruding; Fig. 5-c and Fig. 5-d are extrusion modling blank and hitting power curves in the numerical simulation process; Can find out from the hitting power curve shown in Fig. 5-d; When time duration to 0.506 second, the pressure that is added on the upper and lower mould of finish-forging mould is 15000000 Ns (promptly 1500 tons), is added in the pressure 0 on the workpiece.
Step 5: the finish-forging blank that finish-forging is shaped carries out interior circle processing;
The inner cylinder of the finish-forging blank shown in Fig. 5-b-a and the 5-b-b is processed, so that finish-forging tooth.Finish-forging blank after the processing is shown in Fig. 6-a and 6-b, and wherein, Fig. 6-a and 6-b are respectively the front view and the left views of processing back finish-forging blank.As can be seen from the figure, cylindrical bottom surface diameter by 60mm and 60mm before the processing, becomes 84mm and 65mm after the processing with high.
Step 6: the interior circle of the finish-forging blank after adopting the induced inside firing equipment to processing is forged the tooth place and is carried out local heat;
The induction coil of induced inside firing equipment is put into circle forging tooth place carry out local heat, temperature is heated to 850～900 ℃.
Step 7: forge the tooth moulding;
The forging (the finish-forging blank after the processing) that will pass through local eddy-current heating is put into the forging tooth mould shown in Fig. 7-a and is forged tooth, through oblique extruding, and finish-forging tooth moulding.When forging tooth equipment power is adjusted to 50 tons, final products are shown in Fig. 7-b-a, 7-b-b and 7-b-c behind the forging tooth, and wherein, Fig. 7-b-a, 7-b-b and 7-b-c are respectively right view, front view and the left views that final lock is transferred device protecgulum product.
Wherein, the forging tooth punch 23 of forging the tooth mould is enclosed within the Upper Die-sleeve 1, and Upper Die-sleeve 1 is with to forge tooth punch 23 fixing by locating piece 5, move downward together with heat after, be positioned at counterdie 3 finish-forging shaping blank contact, through the finish-forging tooth moulding of oblique extruding.After forging the tooth completion, transfer device protecgulum product to eject by the lock that knock-pin 4 will finally generate.
In this preferred embodiment; Product adopts the extrusion modling Forging Technology; Compare with existing overlap Forging Technology, can practice thrift the blanking cost greatly: economize 20% material than on fly press, carrying out the open type forging, forge the material of saving 13% than on die hammer, carrying out open type.
In addition, this preferred embodiment is an extrusion forming process, can avoid casting technique to bring the possibility of defective to product; Because of the flow process that need not excise unnecessary overlap, therefore can enhance productivity greatly.
For aforesaid each method embodiment; Simple in order to describe; So it all is expressed as a series of combination of actions, but those skilled in the art should know that the present invention does not receive the restriction of described sequence of movement; Because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art should know that also said method embodiment all belongs to preferred embodiment, and related action and instrument might not be that the present invention is necessary.
Need to prove in addition; Forging of the present invention (inner toothed truncated cone product) can (like 2500 tons of high power screw presses of previous embodiment employing) carry out on the forcing press of special use; Also can on general punching machine, carry out, or on hydraulic press, hot forging punching machine, hydraulic screw press and high energy rate forging hammer, carry out; When on hotdie forging press, carrying out extrusion forging,, therefore be fit to carry out closed die forging because of hotdie forging press has fixing stroke; In addition, final forging tooth can also adopt the mode of colding pressing to carry out.
Forging tooth forging based on the fly press carries out the extrusion forming process characteristics, requires the weight of inner toothed truncated cone product to be no more than 20kg, and ratio of height to diameter is less than 1.2.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
More than to the processing method of the toothed truncated cone product in a kind of inside provided by the present invention and adopt the lock of this processing method processing to transfer the device protecgulum to carry out detailed introduction; Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. the processing method of the toothed truncated cone product in inside is characterized in that, comprising:
Blanking step: confirm bar size and blanking; The bar length-to-diameter that blanking produces is 2.5～5;
Heating steps: the bar of blanking generating step is heated to 1200～1250 ℃ with induction heater;
Blocking jumping-up step: the counterdie impression of the bar of said blanking generating step being put into the blocking mould; Driving said Upper Die-sleeve with forcing press moves downward with the blocking punch that is enclosed within the Upper Die-sleeve together; Above-mentioned bar is squeezed into fully in the impression of said counterdie, the blocking blank after by knock-pin blocking being accomplished then ejects;
Extrusion modling step: the counterdie center of die cavity place that the blocking blank of the said generating step of pre-upsetting is placed on the forging mould; The finish-forging punch that drives in the Upper Die-sleeve that is sleeved on the forging mould with forcing press contacts with said blocking blank; And, then molded blank is ejected the forging mould with the extrusion modling of said blocking blank;
Forge the tooth step: said molded blank is put into the counterdie impression of forging the tooth mould; Drive the forging tooth punch that is sleeved in the Upper Die-sleeve of forging the tooth mould with forcing press said molded blank is carried out oblique extruding; Finish-forging tooth moulding generates the toothed truncated cone product in said inside.
2. processing method as claimed in claim 1 is characterized in that, the hitting power of equipment is 75.6 tons in the said blocking jumping-up step.
3. processing method as claimed in claim 1 is characterized in that, circle procedure of processing in after said extrusion modling step, also comprising: the inner cylinder body region of the blank of extrusion modling further is processed as the size near final products.
4. like claim 1 or 3 described processing methods, it is characterized in that, also comprise local eddy-current heating step before the said forging tooth step: position local heat to 850～900 ℃ that the blank of extrusion modling need be forged tooth with the induced inside firing equipment.
5. processing method as claimed in claim 4 is characterized in that, the hitting power of equipment is 50 tons in the said forging tooth step.
6. processing method as claimed in claim 1 is characterized in that, the hitting power of equipment is 1500 tons in the said extrusion modling step.
7. processing method as claimed in claim 1 is characterized in that, said forcing press is a high power screw press, and the weight of the toothed truncated cone product in said inside is less than 20 kilograms, and ratio of height to diameter is less than 1.2.
8. a lock is transferred the device protecgulum, it is characterized in that, said lock transfers the device protecgulum to adopt the processing method extrusion forging of one of the claim 1～7 toothed truncated cone product in said inside to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010149904 CN101850400B (en) | 2010-04-19 | 2010-04-19 | Processing method for cone frustum-shaped product with inside teeth and front cover of brake slack adjuster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010149904 CN101850400B (en) | 2010-04-19 | 2010-04-19 | Processing method for cone frustum-shaped product with inside teeth and front cover of brake slack adjuster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101850400A CN101850400A (en) | 2010-10-06 |
| CN101850400B true CN101850400B (en) | 2012-12-26 |
Family
ID=42802173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010149904 Expired - Fee Related CN101850400B (en) | 2010-04-19 | 2010-04-19 | Processing method for cone frustum-shaped product with inside teeth and front cover of brake slack adjuster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101850400B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989950B (en) * | 2011-09-19 | 2016-01-20 | 上海交大中京锻压有限公司 | A kind of automobile out star wheel Forging Technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201120445Y (en) * | 2007-10-23 | 2008-09-24 | 郑州华威耐火材料股份有限公司 | Mold for smithing production of main tooth |
| CN101332488A (en) * | 2008-08-01 | 2008-12-31 | 上海东芙冷锻制造有限公司 | Cold-forging technique of gear shaft |
| CN101332489A (en) * | 2008-08-01 | 2008-12-31 | 上海东芙冷锻制造有限公司 | Cold-forging precise forming technique of gear sleeve |
| CN101439387A (en) * | 2008-12-30 | 2009-05-27 | 洛阳市冠华精锻齿轮总厂 | Spiral angle gear accurate hot-extrusion stamp forging technique and process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002011542A (en) * | 2000-06-28 | 2002-01-15 | Kondoo Seikoo Kk | Component having spline hole, and manufacturing method thereof |
-
2010
- 2010-04-19 CN CN 201010149904 patent/CN101850400B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201120445Y (en) * | 2007-10-23 | 2008-09-24 | 郑州华威耐火材料股份有限公司 | Mold for smithing production of main tooth |
| CN101332488A (en) * | 2008-08-01 | 2008-12-31 | 上海东芙冷锻制造有限公司 | Cold-forging technique of gear shaft |
| CN101332489A (en) * | 2008-08-01 | 2008-12-31 | 上海东芙冷锻制造有限公司 | Cold-forging precise forming technique of gear sleeve |
| CN101439387A (en) * | 2008-12-30 | 2009-05-27 | 洛阳市冠华精锻齿轮总厂 | Spiral angle gear accurate hot-extrusion stamp forging technique and process |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-11542A 2002.01.15 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101850400A (en) | 2010-10-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102672096B (en) | Precision die forging and shaping technical method for automobile steering knuckle rough type parts | |
| CN103567248B (en) | A kind of inside and outside compromise face band muscle cylinder extrusion molding dies | |
| CN208437592U (en) | Ring flange forging and molding mold | |
| CN103831390A (en) | Cold heading forming method of car sleeve and mould structure for sleeve forming | |
| CN101934336A (en) | Method and device for semi-solid precision rheo-casting of light alloys | |
| CN105057529A (en) | Extrusion forming method for hollow shaft forged piece with variable cross section | |
| CN106734845A (en) | A kind of precise forming process of brake disc of high-speed train | |
| CN103419002A (en) | Temperature cooling precision forming method of big modulus high boss bevel gear | |
| CN109092957A (en) | A kind of shaft sleeve parts part thixoextruding method | |
| CN103934397A (en) | Engine turbine disc optimizing manufacturing process and device based on heat-resisting alloy | |
| CN202461396U (en) | Cold forging mold for washers | |
| CN112058936A (en) | Cold extrusion molding process of bevel gear | |
| CN208437593U (en) | A kind of ring flange forging and molding mold | |
| CN207154643U (en) | A kind of forging and molding module with handle flanged ball valve valve body forging | |
| CN203751219U (en) | Sleeve forming die structure for vehicle | |
| CN101850400B (en) | Processing method for cone frustum-shaped product with inside teeth and front cover of brake slack adjuster | |
| CN103464674B (en) | A kind of hot forging forming method of duplex fork forging | |
| CN102658304A (en) | Closed-extrusion and molding method of flange | |
| CN208528052U (en) | A kind of shaping dies of shaft sleeve parts part thixoextruding | |
| CN206614024U (en) | A kind of magnesium alloy hub liquid forging mould | |
| CN103658500A (en) | Precise warm forging one-time forming new technology of straight tooth cylinder inner gear | |
| CN103921074A (en) | Forging technology for valve body used on VVT | |
| CN110523899B (en) | Precise hot processing method and die for flange type magnet yoke for electromagnetic brake clutch | |
| CN203610605U (en) | Automatic thermal core box die with ejecting mechanism | |
| CN102107270A (en) | Method for producing irregular-shaped oil seal framework |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20180419 |