CN106623467B - A kind of processing technology of the cold extrusion press for processing spraying arbor and spraying arbor - Google Patents
A kind of processing technology of the cold extrusion press for processing spraying arbor and spraying arbor Download PDFInfo
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- CN106623467B CN106623467B CN201710100617.4A CN201710100617A CN106623467B CN 106623467 B CN106623467 B CN 106623467B CN 201710100617 A CN201710100617 A CN 201710100617A CN 106623467 B CN106623467 B CN 106623467B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/212—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/32—Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C26/00—Rams or plungers for metal extruding; Discs therefor
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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
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
Abstract
A kind of cold extrusion press for processing spraying arbor, including upper press section, squeeze station, demoulding portion, PLC control system, hydraulic system, guide support column, upper press section is supported by guide support column, compressional movement is done along guide support column under the driving of hydraulic system by upper press section and demoulding portion, the work of PLC control system control hydraulic system, it is characterized by: upper press section includes seaming chuck and upper mold, upper mold is used with seaming chuck and is removably connect, squeeze station is equipped with removably lower mold, the bottom of the lower mold and is equipped with hole；Demoulding portion is equipped with the knockout pin of hydraulic cylinder and Driven by Hydraulic Cylinder, and knockout pin is located at the underface of lower mold hole.Solving axis used in spray in the prior art, processing efficiency is low present in the high-volume processing, the high problem of processing cost.
Description
Technical field
The present invention relates to mechanical manufacturing field, spy be related to a kind of cold extrusion press for processing spraying arbor and spraying arbor plus
Work technique.
Background technique
Be a kind of structure chart of typical arbor by spraying in attached drawing 1, spraying arbor therefrom between to both ends shaft diameter be in step
Formula reduces, and major diameter axis is excessive to the shaft shoulder between small diameter shaft, and there are also spline or gear structures on spraying arbor, using routine
Processing method is extremely difficult, and human cost is very high.
The processing method of usual axis is turning, if selecting lathe in machining, although numerically controlled lathe processing is high-quality,
But processing cost is higher, to process feed more than once to shaft-like work, the amount of each turning is very limited, behind process
Spline will be also further processed using gear shapping machine or gear-hobbing machine, and entire process flow is very long.If turn is selected to add
Work, it is more demanding to worker's qualification, and the workpiece that different workers are processed can also have biggish difference, need individually
Quality inspection after processing is completed or needs other processing spline or gear structure, processing efficiency also very low.Be not suitable for very much high-volume
Processing.
On the other hand, by the product of turning and gear shaping or gear hobbing process, many materials will certainly be removed when waste material, is mentioned
High material cost.
Summary of the invention
In view of the deficiencies of the prior art, the arbor the present invention provides a kind of cold extrusion press for processing spraying arbor and by spraying
Processing technology, solving axis used in spray in the prior art, processing efficiency is low present in the high-volume processing, is processed into
This high problem.
The technical scheme is that a kind of cold extrusion press for processing spraying arbor, including it is upper press section, squeeze station, de-
Mould portion, PLC control system, hydraulic system, guide support column, upper press section are supported by guide support column, and upper press section is hydraulic
Compressional movement is done along guide support column under the driving of system, PLC control system controls the work of hydraulic system, and feature exists
In: upper press section includes seaming chuck and upper mold, and with seaming chuck using removably connecting, squeeze station is equipped with removable upper mold
The bottom of the lower mold unloaded, the lower mold is equipped with through-hole；Demoulding portion is equipped with the knockout pin of hydraulic cylinder and Driven by Hydraulic Cylinder, takes off
Tringle is located at the underface of lower mold through-hole and may pass through through-hole.
Optionally, upper mold and lower mold are the axis extrusion die of the spatial model with spraying machine axis shape size characteristic
External member, the maximum position of spraying machine shaft diameter are the boundary section of upper mold and lower mold, the spatial mode of upper mold and lower mold
Type is cylindrical and diameter gradually successively decreases in step type from outside to inside.
Optionally, upper mold includes that there is profile inner space the tooth of spline or gear feature to squeeze upper mold and smooth surface axis
Upper mold, lower mold include that tooth squeezes mold under lower support mode and smooth surface axis, and the tooth squeezes the space shape in upper mold
Shape presses the spline or gear shape size design of spraying arbor, and the tooth squeezes upper mold and the tooth squeezes lower branch hold mode
Tool matches；Spatial form under smooth surface axis upper mold and smooth surface axis in mold presses the size shape design of spraying arbor, light
Mold matches and corresponds to the spline on spraying arbor or gear parts in smooth surface axis upper mold under face axis upper mold and smooth surface axis
Mold retains gear compound graduation circular diameter thickness under tool and smooth surface axis, remaining corresponding part is in smooth surface axis upper mold and smooth surface axis lower die
There are the machining allowance of 1mm for tool.
Smooth surface axis upper mold in upper mold with mold is corresponding under smooth surface axis matches, blank is put into extruder,
Support mode is corresponding under tooth extruding upper mold in upper mold is squeezed with the tooth in lower mold matches, and processes spline or gear
When one-pass molding, processing upper mold is tooth extrusion die, and lower mold is to be processed axis feature circular through hole, processes and is put into blank
In lower mold, lower mold plays position-limiting action, and the tooth extrusion die of upper mold does downwards extruding fortune under the control of PLC control system
Dynamic, the spraying machine shaft-like work of spline or gear to be processed squeezes out spline or gear in the extrusion die of upper mold.
Optionally, upper press section is equipped with limition orientation bar A, and the lower end of limition orientation bar A is equipped with blind hole lead pipe, blind hole
The bottom of lead pipe is equipped with damping spring or shock absorbing rubber pad, and squeeze station is equipped with the blind hole lead with the limition orientation bar A
The top of the limition orientation bar B that pipe matches, limition orientation bar B are equipped with chamfering or fillet, and limition orientation bar B is located at limition orientation
The underface of bar A.
Optionally, upper mold and seaming chuck are connected and fixed using magnetism, and seaming chuck is equipped with magnetic concave support base, upper mold
Tool is placed on magnetic concave support base groove, is fixed by magnetic-adsorption.
Optionally, lower mold and squeeze station are connected and fixed using magnetism, and squeeze station is equipped with magnetic concave support base, lower die
Tool is placed on magnetic concave support base groove, is fixed by magnetic-adsorption.
Optionally, upper mold is fixed with bolts with seaming chuck.
Optionally, lower mold is fixed with bolts with squeeze station.
A kind of processing technology of spraying arbor, it is characterised in that include the following steps:
Step 1, it stocks up: calculating the weight of spraying arbor according to the size of processed spraying machine axis, select diameter spraying
The +/- 20% range round bar steel of the diameter of arbor most thick portion point are as material to be processed, further according to weight, density and diameter
The length of required blank is calculated, cutting round bar obtains blank, finally examines the weight of blank, the weight ratio of gained blank is most
Final product weight is big by 5%~20%；Preferred round bar steel are 20CrMnTi round steel.
Step 2, blank phosphorus saponification process: is subjected to phosphorus saponification process；Phosphatization be the metal of clean surface is put into containing
It is handled in phosphatic dilute acid solutions；Saponification is to be put into the metal of clean surface in sodium stearate solution to impregnate one section
Time makes metal surface adsorb saponification layer securely and does lubricant.After blank phosphorus saponification process, blank surface can be made
Soften, while playing lubricating action, facilitates subsequent demoulding.
Step 3, an extrusion forming: having for phospholeumization treated blank is put into spraying arbor cold extrusion press is spraying
Under the smooth surface axis of arbor feature in mold, seaming chuck drives smooth surface axis upper mold to move downward and squeezes out with axis outer dimension spy
The semi-finished product axis of sign, seaming chuck lift, and semi-finished product axis is squeezed out mold under smooth surface axis by knockout pin, the spline on corresponding spraying arbor
Or the diameter of gear parts keeps identical as gear compound graduation circular diameter, there are the machining allowance of 1mm for rest part；
Step 4, secondary extrusion form: by step 3 gained semi-finished product axis be put into spraying arbor cold extrusion press have gear
The tooth of feature squeezes in lower support mode, and seaming chuck band movable tooth, which squeezes upper mold and moves downward, squeezes out spline or gear position squeezes
Spline or gear structure feature are extruded, the axis processed is squeezed out tooth and squeezes lower support mode by knockout pin；
Step 5, it finishes: being carried out further with the lathe semi-finished product axis with spline or gear obtained to step 4
Finishing, the chamfering for leaving major diameter axis and small diameter shaft to step 3 processing are removed, and are formed positioning shaft shoulder, are removed axis outer surface
One layer of metal, to subsequent heat treatment.
Step 6, be heat-treated: the axis that step 5 obtains first carries out carbo-nitriding heat treatment, in carbon containing and nitrogen salt bath
900~1000 DEG C of temperature, soaking time 1~3 hour of reason；Secondly 800~850 DEG C at a temperature of be quenched, finally 180
Tempering at a temperature of~200 degrees Celsius.The hardness of carburized surface (can quench up to HRC58--63, other surfaces after heat treatment
Place's core thoroughly) hardness is up to HRC35--45.
Step 7, cylindrical grinding: by the working face of carbo-nitriding treated axis on sander ground smooth, make rough surface
Degree reaches Ra0.8.
Technical solution provided by the invention has the benefit that
1. the cold extrusion press moving component is few, PLC control program is simple, in use, dedicated set of molds is installed respectively
It on upper press section and squeeze station, is put into mold by the blank of spraying arbor to be processed, is squeezed in PLC control system control
Splenium moves downward, the blank of the spraying arbor on squeeze station, needed for being deformed under the squeezing action of upper mold and lower mold
The shape and structure feature wanted, after the completion of extruding, upper press section is lifted, and it is de- that PLC control system drives the hydraulic cylinder in demoulding portion to drive
Tringle moves upwards.The bottom of lower mold in cold extrusion press of the invention is equipped with through-hole, is additionally provided with knockout pin, knockout pin can
To pass through the through-hole of lower mold bottom.After the completion of workpiece extruding, typically no drafting angle appropriate is difficult rapidly squeeze
It presses workpiece to take out, the knockout pin of Driven by Hydraulic Cylinder is set, even will can also squeeze the workpiece completed rapidly without drafting angle
It extracts.The process of one part completes the process, and removes the blank of the next spraying arbor of part exchanging.Whole process is no more than
10s substantially increases processing efficiency.And low to the requirement of the skills involved in the labour of skilled worker, skilled worker only needs to pick and place
Part reduces recruitment cost.
2. upper mold and lower mold have the axis extrusion die external member of the spatial model of spraying arbor feature, by spraying arbor
Boundary section of the maximum position of diameter as upper mold and lower mold demoulds after conveniently completing the process.By blank when processing
It is put into lower mold, the extruded rod of upper mold does downwards compressional movement under the control of PLC control system, and blank is in upper/lower die
Extruding under deformation fill up the spatial model of upper mold Yu lower mold, blank has just been processed into the spraying machine of upper mold Yu lower mold
The spraying arbor semi-finished product of axis feature, easy to operate, high in machining efficiency a, extrusion forming.
3. once squeezing just plastic, high in machining efficiency, homogeneity of product using tooth extrusion die processing gear or spline
It is good.
4. limition orientation bar A and limition orientation bar B is arranged, the upper press section of prevention and squeeze station are when processing because of workpiece
Crush resistance makes squeeze station shift, and the top of limition orientation bar B is equipped with chamfering or fillet, can guide limition orientation
Pipe B is inserted into blind hole lead pipe.In addition the bottom of the blind hole lead pipe of limition orientation bar A is equipped with damping spring or shock absorbing rubber
Pad, it is possible to reduce the vibration of upper press section and squeeze station impact moment protects process equipment, improves process equipment service life.
5. the groove of magnetic concave support base can prevent mold from breakking away under big compression shock.
6. using processing technology of the invention, the process flow of processing can be shortened, processing efficiency is improved, is reduced
The waste of raw material metal reduces otherness caused by product processing, improves product quality.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of typical spraying machine axle construction schematic diagram in the prior art.
Fig. 2 is a kind of cold extrusion press structural schematic diagram for processing spraying arbor of the present invention.
Fig. 3 is the structural schematic diagram of limition orientation bar A and limition orientation bar B of the present invention.
Fig. 4 is that the assembling structure of mold and hydraulic cylinder and knockout pin is illustrated under smooth surface axis upper mold of the present invention, smooth surface axis
Figure.
Fig. 5 is the structural schematic diagram that tooth of the present invention squeezes upper mold.
Fig. 6 is the structural schematic diagram that tooth of the present invention squeezes upper mold and tooth squeezes lower support mode and knockout pin.
In figure: upper press section 1, seaming chuck 11, upper mold 12, tooth squeeze upper mold 121, smooth surface axis upper mold 122, squeeze
Platform 2, lower mold 21, tooth squeeze lower support mode 211, mold 212 under smooth surface axis, demoulding portion 3, hydraulic cylinder 31, knockout pin 32, spray
Mist arbor 4, guide support column 5, limition orientation bar B 6, limition orientation bar A 7, blind hole lead pipe 71, shock absorbing rubber pad 72.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, is clearly and completely retouched to the technical solution in embodiment
It states.Obviously, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Bright embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
As shown in Figures 2 and 3, a kind of cold extrusion press for processing spraying arbor, including upper press section 1, squeeze station 2, demoulding
Portion 3, PLC control system, hydraulic system, guide support column 5, upper press section 1 are supported by guide support column 5, and upper press section 1 is in liquid
Compressional movement is done along guide support column 5 under the driving of pressure system, PLC control system controls the work of hydraulic system, feature
Be: upper press section 1 includes seaming chuck 11 and upper mold 12, and upper mold 12, using removably connecting, is squeezed with seaming chuck 11
Platform 2 is equipped with removably lower mold 21, the bottom of the lower mold 21 and is equipped with through-hole；Demoulding portion 3 is equipped with 31 He of hydraulic cylinder
The knockout pin that hydraulic cylinder 31 drives, knockout pin are located at the underface of lower 21 through-hole of mold and may pass through through-hole.
The cold extrusion press moving component is few, and PLC control program is simple, in use, dedicated set of molds is separately mounted to
It on upper press section 1 and squeeze station 2, is put into mold by the blank of spraying arbor to be processed, is squeezed in PLC control system control
Splenium 1 moves downward, the blank of the spraying arbor on squeeze station 2, deforms under the squeezing action of upper mold 12 and lower mold 21
At required shape and structure feature, after the completion of extruding, upper press section 1 is lifted, and PLC control system drives the hydraulic of demoulding portion 3
Cylinder 31 drives knockout pin to move upwards.The bottom of lower mold 21 in cold extrusion press of the invention is equipped with through-hole, is additionally provided with de-
Tringle, knockout pin can pass through the through-hole of lower 21 bottom of mold.After the completion of workpiece extruding, typically no drafting angle appropriate
Workpiece will rapidly be squeezed by, which being difficult, takes out, and the knockout pin that setting hydraulic cylinder 31 drives even also can be rapid without drafting angle
The workpiece completed will be squeezed to extract.The process of one part completes the process, and removes the blank of the next spraying arbor of part exchanging.
Whole process is no more than 10s, substantially increases processing efficiency.And low, technology is required to the skills involved in the labour of skilled worker
Worker only needs to pick and place part, reduces recruitment cost.
Optionally, upper mold 12 and lower mold 21 are that the axis of the spatial model with spraying machine axis shape size characteristic squeezes
Mold external member, the maximum position of spraying machine shaft diameter are the boundary section of upper mold 12 and lower mold 21, upper mold 12 and lower die
The spatial model of tool 21 is cylindrical and diameter gradually successively decreases in step type from outside to inside.
Upper mold 12 and lower mold 21 have the axis extrusion die external member of the spatial model of spraying arbor feature, by spraying machine
Boundary section of the maximum position of shaft diameter as upper mold 12 and lower mold 21 demoulds after conveniently completing the process.When processing
Blank is put into lower mold 21, the extruded rod of upper mold 12 does downwards compressional movement, blank under the control of PLC control system
The spatial model of upper mold 12 Yu lower mold 21 is filled up in deformation under the extruding of upper/lower die 21, and blank has just been processed into upper mold
12 with the spraying arbor semi-finished product of the spraying arbor feature of lower mold 21, easy to operate, high in machining efficiency a, extrusion forming.
Optionally, as shown in Figure 4, Figure 5 and Figure 6, upper mold 12 includes that profile inner space has spline or gear feature
Tooth squeeze upper mold 121 and smooth surface axis upper mold 122, lower mold 21 includes that tooth squeezes under lower support mode 211 and smooth surface axis
Mold 212, the tooth squeeze the spline or gear shape size design that the spatial form in upper mold 121 presses spraying arbor,
The tooth squeezes support mode 211 under upper mold 121 is squeezed with the tooth and matches；Smooth surface axis upper mold 122 and light
Spatial form under the axis of face in mold 212 presses the size shape design of spraying arbor, smooth surface axis upper mold 122 and smooth surface axis lower die
Tool 212 matches and corresponds to the spline on spraying arbor or the gear parts mold under smooth surface axis upper mold 122 and smooth surface axis
212 retain gear compound graduation circular diameter thicknesses, remaining corresponding part under smooth surface axis upper mold 122 and smooth surface axis mold 212 there are
The machining allowance of 1mm.
Smooth surface axis upper mold 122 in upper mold 12 with mold 212 is corresponding under smooth surface axis matches, blank is put into crowded
In press, tooth in upper mold 12 squeezes upper mold 121 and the tooth in lower mold 21 and squeezes that time support mode 211 is corresponding mating to be made
With one-pass molding when processing spline or gear, processing upper mold 12 is tooth extrusion die, and lower mold 21 is is processed axis characteristic circle
Blank is put into lower mold 21 by shape through-hole, processing, and lower mold 21 plays position-limiting action, and the tooth extrusion die of upper mold 12 is in PLC
Do compressional movement under the control of control system downwards, the extruding of the spraying machine shaft-like work of spline or gear to be processed in upper mold 12
Mould squeezes out spline or gear.Gear is processed using tooth extrusion die or spline once squeezes just plastic, high in machining efficiency, production
Product consistency is good.
Optionally, upper press section 1 is equipped with limition orientation bar A 7, and the lower end of limition orientation bar A 7 is equipped with blind hole lead pipe
71, the bottom of blind hole lead pipe 71 is equipped with damping spring or shock absorbing rubber pad 72, and squeeze station 2 is equipped with and the limition orientation bar
The top of the limition orientation bar B 6 that the blind hole lead pipe 71 of A 7 matches, limition orientation bar B 6 are equipped with chamfering or fillet, limit
Guide rod B 6 is located at the underface of limition orientation bar A 7.
Limition orientation bar A 7 and limition orientation bar B 6 is set, and the upper press section 1 of prevention and squeeze station 2 are when processing because of work
The crush resistance of part makes squeeze station 2 shift, and the top of limition orientation bar B 6 is equipped with chamfering or fillet, can guide
Limition orientation pipe B is inserted into blind hole lead pipe 71.In addition the bottom of the blind hole lead pipe 71 of limition orientation bar A 7 is equipped with damping bullet
Spring or shock absorbing rubber pad 72, it is possible to reduce the vibration of upper press section 1 and the impact moment of squeeze station 2 protects process equipment, improves and add
Construction equipment service life.
Optionally, upper mold 12 is connected and fixed with seaming chuck 11 using magnetism, and seaming chuck 11 is equipped with magnetic concave support
Seat, upper mold 12 are placed on magnetic concave support base groove, are fixed by magnetic-adsorption.
Optionally, lower mold 21 is connected and fixed with squeeze station 2 using magnetism, and squeeze station 2 is equipped with magnetic concave support base,
Lower mold 21 is placed on magnetic concave support base groove, is fixed by magnetic-adsorption.
It can prevent mold from breakking away under big compression shock on magnetic concave support base groove.
Optionally, upper mold 12 is fixed with bolts with seaming chuck 11.
Optionally, lower mold 21 is fixed with bolts with squeeze station 2.
A kind of processing technology of spraying arbor, it is characterised in that include the following steps:
Step 1, it stocks up: calculating the weight of spraying arbor according to the size of processed spraying machine axis, select diameter spraying
The +/- 20% range round bar steel of the diameter of arbor most thick portion point are as material to be processed, further according to weight, density and diameter
The length of required blank is calculated, cutting round bar obtains blank, finally examines the weight of blank, the weight ratio of gained blank is most
Final product weight is big by 5%~20%；Preferred round bar steel are 20CrMnTi round steel.
Step 2, blank phosphorus saponification process: is subjected to phosphorus saponification process；Phosphatization be the metal of clean surface is put into containing
It is handled in phosphatic dilute acid solutions；Saponification is to be put into the metal of clean surface in sodium stearate solution to impregnate one section
Time makes metal surface adsorb saponification layer securely and does lubricant.After blank phosphorus saponification process, blank surface can be made
Soften, while playing lubricating action, facilitates subsequent demoulding.
Step 3, an extrusion forming: having for phospholeumization treated blank is put into spraying arbor cold extrusion press is spraying
Under the smooth surface axis of arbor feature in mold 212, seaming chuck 11 drives smooth surface axis upper mold 122 to move downward and squeezes out outside with axis
The semi-finished product axis of shape size characteristic, seaming chuck 11 lift, and semi-finished product axis is squeezed out mold 212 under smooth surface axis, corresponding spray by knockout pin
The diameter of spline or gear parts on mist arbor keeps identical as gear compound graduation circular diameter, and there are the processing of 1mm for rest part
Surplus；
Step 4, secondary extrusion form: by step 3 gained semi-finished product axis be put into spraying arbor cold extrusion press have gear
The tooth of feature squeezes in lower support mode 211, and seaming chuck 11 moves downward with movable tooth extruding upper mold 121 and squeezes out spline or tooth
Wheel position squeezes out spline or gear structure feature, and the axis processed is squeezed out tooth and squeezes lower support mode 211 by knockout pin；
Step 5, it finishes: being carried out further with the lathe semi-finished product axis with spline or gear obtained to step 4
Finishing, the chamfering for leaving major diameter axis and small diameter shaft to step 3 processing are removed, and are formed positioning shaft shoulder, are removed axis outer surface
One layer of metal, to subsequent heat treatment.
Step 6, it is heat-treated: carbo-nitriding heat treatment being carried out to the axis that step 5 obtains, is handled in carbon containing and nitrogen salt bath
900~1000 DEG C of temperature, soaking time 1~3 hour；Secondly 800~850 DEG C at a temperature of be quenched, finally 180~
Tempering at a temperature of 200 degrees Celsius.For the hardness of carburized surface up to HRC58--63, other surfaces (can through hardening after heat treatment
Locate core) hardness is up to HRC35--45.
Step 7, cylindrical grinding: by the working face of carbo-nitriding treated axis on sander ground smooth, make rough surface
Degree reaches Ra0.8.
Using the processing technology, the process flow of processing is shortened, processing efficiency is improved, reduces raw material metal
Waste reduces otherness caused by product processing, improves product quality.
Claims (3)
1. a kind of cold extrusion press for processing spraying arbor, including upper press section (1), squeeze station (2), demoulding portion (3), PLC control
System, hydraulic system, guide support column (5), upper press section (1) are supported by guide support column (5), and upper press section (1) is hydraulic
Compressional movement is done along guide support column (5) under the driving of system, PLC control system controls the work of hydraulic system, feature
Be: upper press section (1) includes seaming chuck (11) and upper mold (12), and upper mold (12) is connect with seaming chuck (11) using magnetism
Fixed, seaming chuck (11) is equipped with magnetic concave support base, and upper mold (12) is placed on magnetic concave support base groove, by magnetic force
Absorption is fixed, and lower mold (21) is connected and fixed with squeeze station (2) using magnetism, and squeeze station (2) is equipped with magnetic concave support base,
Lower mold (21) is placed on magnetic concave support base groove, is fixed by magnetic-adsorption, and the bottom of the lower mold (21) is equipped with
Through-hole；The knockout pin (32) that demoulding portion (3) is equipped with hydraulic cylinder (31) and hydraulic cylinder (31) drives, knockout pin (32) are located at lower mold
(21) underface of through-hole and it may pass through through-hole, upper mold (12) includes the tooth that profile inner space has spline or gear feature
Upper mold (121) and smooth surface axis upper mold (122) are squeezed, lower mold (21) includes that tooth squeezes lower support mode (211) and smooth surface
Mold (212) under axis, the tooth squeeze the spline or gear shape that the spatial form in upper mold (121) presses spraying arbor (4)
Shape size design, the tooth are squeezed under upper mold (121) are squeezed with the tooth support mode (211) and are matched；Smooth surface
Spatial form under axis upper mold (122) and smooth surface axis in mold (212) presses the size shape design of spraying arbor (4), smooth surface
Mold (212) matches and corresponds to spline or gear parts on spraying arbor (4) and exists under axis upper mold (122) and smooth surface axis
Mold (212) retains gear compound graduation circular diameter thickness under smooth surface axis upper mold (122) and smooth surface axis, remaining corresponding part is in smooth surface
There are the machining allowance of 1mm for mold (212) under axis upper mold (122) and smooth surface axis.
2. a kind of cold extrusion press for processing spraying arbor according to claim 1, it is characterised in that: on upper press section (1)
Equipped with limition orientation bar A (7), the lower end of limition orientation bar A (7) is equipped with blind hole lead pipe (71), the bottom of blind hole lead pipe (71)
Portion is equipped with damping spring or shock absorbing rubber pad (72), and squeeze station (2) is equipped with the blind hole lead with the limition orientation bar A (7)
The top of the limition orientation bar B (6) that pipe (71) matches, limition orientation bar B (6) are equipped with chamfering or fillet, limition orientation bar B
(6) it is located at the underface of limition orientation bar A (7).
3. a kind of processing technology of spraying arbor, it is characterised in that include the following steps:
Step 1, it stocks up: calculating the weight of spraying arbor (4) according to the size of processed spraying machine axis (4), diameter is selected to spray
The +/- 20% range round bar steel of the diameter of mist arbor (4) most thick portion point are as material to be processed, further according to weight, density
The length of blank needed for going out with diameter calculation, cutting round bar obtain blank, finally examine the weight of blank, the weight of gained blank
It measures bigger than final products weight by 5%~20%；
Step 2, blank phosphorus saponification process: is subjected to phosphorus saponification process；
Step 3, phospholeumization treated blank is put into spraying arbor cold extrusion press an extrusion forming: had into spraying arbor
(4) under the smooth surface axis of feature in mold (212), seaming chuck (11) drives smooth surface axis upper mold (122) to move downward and squeezes out band
There is the semi-finished product axis of axis appearance and size feature, seaming chuck (11) lifts, and semi-finished product axis is squeezed out smooth surface axis lower die by knockout pin (32)
Having (212), the diameter of spline or gear parts on corresponding spraying arbor (4) keeps identical as gear compound graduation circular diameter, remaining
There are the machining allowance of 1mm for part；
Step 4, secondary extrusion form: by step 3 gained semi-finished product axis be put into spraying arbor cold extrusion press have gear feature
Tooth squeeze in lower support mode (211), seaming chuck (11) band movable tooth, which squeezes upper mold (121) and moves downward, squeezes spline or tooth
Wheel position squeezes out spline or gear structure feature, and the axis processed is squeezed out tooth and squeezes lower support mode by knockout pin (32)
(211)；
Step 5, it finishes: carrying out further finishing with the lathe semi-finished product axis with spline or gear obtained to step 4
Work, the chamfering for leaving major diameter axis and small diameter shaft to step 3 processing are removed, and are formed positioning shaft shoulder, are removed the one of axis outer surface
Layer metal, to subsequent heat treatment；
Step 6, it is heat-treated: carbo-nitriding heat treatment being carried out to the axis that step 5 obtains, the treatment temperature in carbon containing and nitrogen salt bath
900~1000 DEG C, soaking time 1~3 hour；Secondly 800~850 DEG C at a temperature of be quenched, finally 180~200
Tempering at a temperature of degree Celsius；
Step 7, cylindrical grinding: by the working face of carbo-nitriding treated axis on sander ground smooth, reach surface roughness
To Ra0.8.
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| CN108057992A (en) * | 2017-12-06 | 2018-05-22 | 浙江浙研冷挤压有限公司 | A kind of preparation method of new-energy automobile drive motor shaft |
| CN107983791B (en) * | 2017-12-26 | 2024-08-27 | 重庆江东机械有限责任公司 | Mechanical limiting device |
| CN108526237B (en) * | 2018-06-12 | 2023-09-05 | 浙江彪马自动化设备有限公司 | Vertical hydraulic red punching processing device |
| CN109773432A (en) * | 2019-02-27 | 2019-05-21 | 常州金球轴承厂 | Multistation cold extrusion tooth shaft forming technology |
| CN113696017B (en) * | 2021-10-27 | 2022-03-18 | 南通京鼎机械科技有限公司 | Quick replacement formula gear manufacturing installation for cold extrusion |
| CN115846521A (en) * | 2022-11-22 | 2023-03-28 | 台州市百达电器有限公司 | Protective cover machining die and machining process |
| CN116475762A (en) * | 2023-03-29 | 2023-07-25 | 中国民用航空飞行学院 | A cold extrusion strengthening device for composite material pore structure |
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| US3605475A (en) * | 1969-06-19 | 1971-09-20 | Nat Machinery Co The | Method and apparatus for extruding gear blanks |
| JPS60257920A (en) * | 1984-06-04 | 1985-12-19 | Nissan Motor Co Ltd | Method and device for extrusion molding of helical gear |
| CN101081409A (en) * | 2007-07-04 | 2007-12-05 | 陈丽 | 125CC autobicycle gear shifting box main spindle multiple spline highly-effective cold extrusion processing technics |
| CN101513702A (en) * | 2008-02-20 | 2009-08-26 | 周蔚 | Process and device for cold extrusion forming of gear pump main shaft |
| CN101342566B (en) * | 2008-08-25 | 2010-10-13 | 江苏创一精锻有限公司 | Integral cold forging technique for angular wheel shaft |
| CN202591269U (en) * | 2011-09-20 | 2012-12-12 | 郑洪伦 | Cold extrusion forming device for starter gear of 125 motorcycle engine |
| CN103028624B (en) * | 2012-12-11 | 2015-01-14 | 西安交通大学 | Device for compositely extruding spline shaft by means of medium-high frequency induction heating and vibrating and technology therefor |
| CN206474519U (en) * | 2017-02-23 | 2017-09-08 | 湖北名泰农机有限公司 | A kind of cold extrusion press for processing spraying arbor |
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Effective date of registration: 20230403 Address after: Yongquan Industrial Park, Nanzhang Economic Development Zone, Xiangyang City, Hubei Province Patentee after: Hubei Mingtai electromechanical Co.,Ltd. Address before: 441500 10 Yongquan Industrial Park, Nanzhang County, Xiangfan City, Hubei Province Patentee before: HUBEI MINGTAI AGRICULTURAL MACHINERY CO.,LTD. |
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