CN105234321B - A kind of cold upset extrusion shaping device of thin-walled hollow alignment pin - Google Patents
A kind of cold upset extrusion shaping device of thin-walled hollow alignment pin Download PDFInfo
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- CN105234321B CN105234321B CN201510757084.8A CN201510757084A CN105234321B CN 105234321 B CN105234321 B CN 105234321B CN 201510757084 A CN201510757084 A CN 201510757084A CN 105234321 B CN105234321 B CN 105234321B
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- chamfering
- hole
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- 238000001125 extrusion Methods 0.000 title claims abstract description 17
- 238000007493 shaping process Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 57
- 239000011799 hole material Substances 0.000 claims description 81
- 239000000047 product Substances 0.000 claims description 39
- 238000005520 cutting process Methods 0.000 claims description 24
- 230000001360 synchronised effect Effects 0.000 claims description 15
- 210000002257 embryonic structure Anatomy 0.000 claims description 10
- 210000001161 mammalian embryo Anatomy 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 4
- 238000012797 qualification Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 208000007623 Lordosis Diseases 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
- B21G3/00—Making pins, nails, or the like
- B21G3/18—Making pins, nails, or the like by operations not restricted to one of the groups B21G3/12 - B21G3/16
- B21G3/28—Making pins, nails, or the like by operations not restricted to one of the groups B21G3/12 - B21G3/16 by forging or pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
- B21G3/00—Making pins, nails, or the like
- B21G3/18—Making pins, nails, or the like by operations not restricted to one of the groups B21G3/12 - B21G3/16
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
- B21G3/00—Making pins, nails, or the like
- B21G3/32—Feeding material to be worked to nail or pin making machines
Abstract
The invention discloses a kind of cold upset extrusion shaping device of thin-walled hollow alignment pin, including blank module, a pier module, two pier modules, the pre- casement group of pier, front chamfering module, drawing module, chamfering cut off module, material returned disk and operating clamp.The cold upset extrusion shaping device of the thin-walled hollow alignment pin is a kind of six stations cold header, thin-walled hollow alignment pin molding can be completed High-Speed Automatic using the device, and no longer need secondary operations, simultaneously, the device causes the manufacture of thin-walled hollow alignment pin to switch to automated production by artificial operation, production efficiency is high, cost reduction, and the Product Precision produced, qualification rate are also significantly improved；Thin-walled hollow alignment pin is produced using the device, its raw material can not use finish draw steel pipe, directly justify the product that material can produce precision prescribed with common disk, and stock utilization is high, reduce further cost.
Description
Technical field
The present invention relates to a kind of alignment pin production equipment, the technical field of mould, more particularly to it is a kind of thin
The cold upset extrusion shaping device of wall roll pin axle.
Background technology
Thin-walled hollow alignment pin is present in the mould being made up of two parts or more parts, makes mould in closure phase
Adjacent two parts are accurately positioned, so as to make perfect product.Because the monolateral wall thickness of thin-walled hollow alignment pin is relatively thin, typically only have
0.3-0.8mm, in addition to being easy to assembling, two ends need the rake angle of certain altitude, therefore product size tolerance and morpheme are public
Difference requires very high.At present for the processing technique of thin-walled hollow alignment pin is：Cold drawn finish draw steel pipe → cut off → lathe is put down
Surface chamfer → cylindrical grinding.Not only cost is very high for this processing mode, and working (machining) efficiency is very low, and Product Precision directly receives finish draw steel
Pipe qualitative effects (material quality has high demands), because product wall is thin during processing, disqualification rate is also very high.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of cold-heading of thin-walled hollow alignment pin is squeezed
Shaped device, to solve the skills such as existing thin-walled hollow alignment pin processing technique high cost, the low, unstable product quality of efficiency
Art problem.
The present invention is achieved by the following technical solutions：
A kind of cold upset extrusion shaping device of thin-walled hollow alignment pin, including blank module, a pier module, two pier modules,
The pre- casement group of pier, front chamfering module, drawing module, chamfering cut off module, material returned disk and operating clamp, wherein：
The blank module includes fixed cutting tool mould and moving cutting tool, for disk circle material is cut into cylinder by product specification
Chaeta blank；
The one pier module includes being corresponding in turn to before a pier of setting punch after punch, a pier die and a pier, and described one
Pier die is the die that inner chamber is cylinder, and which has front die orifice and rear die orifice, and die orifice is less than front die orifice thereafter, after a pier
Punch enters the inner chamber of a pier die by die orifice thereafter, for blank material is processed into a pier embryo；
The two piers module includes being corresponding in turn to before two piers of setting punch after punch, two pier dies and two piers, and described two
Pier die is the die that inner chamber is cylinder, and which has front die orifice and rear die orifice, and die orifice is less than front die orifice thereafter, after two piers
Punch enters the inner chamber of two pier dies by die orifice thereafter, for a pier embryo is processed into two pier embryos；
The pre- casement group of the pier includes convex behind punch, the pre- hole die of pier and the pre- hole of pier before the pre- hole of the pier for being corresponding in turn to setting
Mould, before the pre- hole of the pier, the leading section of punch is provided with the pre- hole of pier and works head, and the pre- hole die of the pier is that inner chamber is the recessed of cylinder
Mould, which has front die orifice and rear die orifice, and die orifice is less than front die orifice thereafter, and behind the pre- hole of the pier, punch enters pier by die orifice thereafter
The inner chamber of pre- hole die, in the front end face pier hole of two pier embryos, obtaining into the pre- hole material of pier；
The front chamfering module includes being corresponding in turn to convex after punch, front chamfering die and front chamfering before the front chamfering of setting
Mould, the front chamfering die have front die orifice and rear die orifice, and its forward and backward die orifice joint is set by the angle requirement of chamfering before product
There is chamfering step, the inner chamber bore of its chamfering step bottom forms a land plateau, for controlling slightly larger than die orifice bore thereafter
The height dimension of front chamfering and higher end face flatness, and product end surface not oarsman, the front end of punch after the front chamfering
Portion is provided with front chamfering work head, and the inner chamber of front chamfering die is entered by the rear die orifice of front chamfering die, for by pier pre- hole
The outer pier of the front end face of material obtains into front corner material into chamfering；
The drawing module includes being corresponding in turn to punch, the drawing after punch, drawing die and drawing before the drawing of setting
Before deep, punch includes the drawing work band being sequentially connected and drawing work head, and the size of the drawing work head is equal to product internal orifice
Footpath size, the diameter dimension of the drawing work band are less than the 0.3mm of drawing work head diameter dimension, and the drawing die is straight
Logical mould, after the drawing, punch enters the inner chamber of drawing die by the die cavity rear portion of drawing die, for by into front corner material
The inside drawing in the pre- hole of pier, obtains drawing material；
The chamfering is cut off punch and chamfering before module includes being corresponding in turn to the rear chamfering of setting and cuts off synchronous mould, it is described after
Before chamfering, the size and the interior bore consistent size of drawing material of the work head of punch, which is provided with steam vent, with chamfering after guarantee
After front punch enters the endoporus of drawing material, in hole, air and oil can be discharged in time, it is to avoid punch before chamfering after under powerful air pressure
Deviation phenomenon and product is had undesirable effect；The chamfering cuts off rear chamfering die, the right angle that synchronous mould includes being sequentially connected
Step and rear die orifice are cut off, the surface of internal cavity of the rear chamfering die is the inside conical surface for tightening, after its frustoconical bevel angle is product
The angle of chamfering, the inner chamber bore of its conical surface bottom is more than bore 0.10-0.35mm in product；Cut off in the right angle
There is bed material shearing blade, for cutting off bed material, then cut off bottom surface for by the bottom surface outer pier of drawing material into after rear chamfering, obtain
Thin-walled hollow alignment pin finished product；
The material returned disk is cut off between synchronous mould with chamfering located at punch before rear chamfering.
The front punch of one pier, the front punch of two piers, punch, the front punch of front chamfering, the front punch of drawing, rear chamfering before the pre- hole of pier
Front punch be in turn secured to one before on punch slide plate, and with front punch slide plate synchronizing moving；
The fixed cutting tool mould, a pier die, two pier dies, the pre- hole die of pier, front chamfering die, drawing die and chamfering
Cut off synchronous mould to be in turn secured in fixed plate；
After punch after punch, two piers after one pier, the pre- hole of pier, after punch, front chamfering, after punch and drawing, punch is solid successively
On punch slide plate after, and subsequently punch slide plate synchronizing moving.
Punch, fixed cutting tool mould, moving cutting tool, a pier die, two pier dies, pier before punch, drawing before the pre- hole of the pier
Pre- hole die, front chamfering die, drawing die, chamfering are cut off synchronous mould and are alloy material and make, and surface smoothness is good, production
The Product Precision that goes out, qualification rate are high, and can bear big pier extruding force.
The pre- hole of the pier works the endoporus aperture size for being smaller in size than into front corner material of head, front chamfering of its depth for product
Length, so that the chamfering of molding is substantially, meets product requirement.
, more than the endoporus aperture size that the pre- hole of pier is expected, which is highly higher than the pre- hole material of pier for the size of the front chamfering work head
Bore depth.
The moving cutting tool and operating clamp are located in operating module, and with operating module synchronizing moving, the operational mode
Include some sector gears on block, the operating clamp is connected with sector gear, and upset is completed by sector gear.
The quantity of the operating clamp is 5 secondary, is respectively arranged on a pier die, two pier dies, the pre- hole die of pier, front chamfering recessed
At the front die orifice of mould and drawing die, after this station completes work, the synchronous labor and materials upset to be added by this station of the clamp that operates
Or flat sending is transported to next station.
The present invention has advantages below compared to existing technology：The invention provides a kind of cold-heading of thin-walled hollow alignment pin
Extrusion forming device, the device are a kind of six stations cold header, High-Speed Automatic can complete thin-walled using the cold header empty
Heart alignment pin molding, and secondary operations are no longer needed, meanwhile, the device causes the manufacture of thin-walled hollow alignment pin by artificial
Operation switchs to automated production, and production efficiency is high, cost reduction, and the Product Precision produced, qualification rate are also significantly improved；Utilize
The device produces thin-walled hollow alignment pin, and its raw material can not use finish draw steel pipe, directly can production with common disk circle material
Go out the product of precision prescribed, and stock utilization is high, reduce further cost.
Description of the drawings
Fig. 1 is a kind of structural representation of the six station cold headers suitable for the method for the invention；
Fig. 2 is the structural representation of the front chamfering module of six station cold headers；
Fig. 3 is the structural representation of the drawing module of six station cold headers.
Fig. 4 is the structural representation that the chamfering of six station cold headers cuts off module；
Cold upset extrusion shaping method product forming technique flow charts of the Fig. 5 for thin-walled hollow alignment pin.
Specific embodiment
Below embodiments of the invention are elaborated, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following enforcements
Example.
Embodiment 1
A kind of cold upset extrusion shaping device of thin-walled hollow alignment pin is present embodiments provided, the device is a kind of six station
Cold header, shaped device have structure as Figure 1-4, including blank module, a pier module, two pier modules, the pre- hole of pier
Module, front chamfering module, drawing module, chamfering cut off module, operating clamp 8 and material returned disk 9, in figure, with the left side as six stations
The front direction of cold header, the right are the rear direction of six station cold headers.
The blank module includes fixed cutting tool mould 11 and moving cutting tool 12.
The one pier module includes being corresponding in turn to before a pier of setting punch 23 after punch 21, a pier die 22 and a pier,
The one pier die 22 is the die that inner chamber is cylinder, and which has front die orifice and rear die orifice, and die orifice is less than front die orifice thereafter, institute
After stating a pier, punch 23 enters the inner chamber of a pier die 22 by die orifice thereafter.
The two piers module includes being corresponding in turn to before two piers of setting punch 33 after punch 31, two pier dies 32 and two piers,
The two piers die 32 is the die that inner chamber is cylinder, and which has front die orifice and rear die orifice, and die orifice is less than front die orifice thereafter, institute
After stating two piers, punch 33 enters the inner chamber of two pier dies 32 by die orifice thereafter.
The pre- casement group of the pier is included before the pre- hole of the pier for being corresponding in turn to setting after the pre- hole die 42 of punch 41, pier and the pre- hole of pier
Punch 43, before the pre- hole of the pier, the leading section of punch 41 is provided with the pre- hole of pier and works head, and the pre- hole die 42 of the pier is that inner chamber is circle
The die of cylinder, which has front die orifice and rear die orifice, and die orifice is less than front die orifice thereafter, and behind the pre- hole of the pier, punch 43 is by thereafter
Die orifice enters the inner chamber of the pre- hole die of pier 42.
As shown in Fig. 2 the front chamfering module includes being corresponding in turn to punch 51, front chamfering die 52 before the front chamfering of setting
With punch 53 after front chamfering, the front chamfering die 52 has front die orifice and rear die orifice, before product is pressed in its forward and backward die orifice joint
The angle requirement of chamfering is provided with chamfering step 521, and the inner chamber bore of its chamfering step bottom is formed slightly larger than die orifice bore thereafter
One less land plateau 522, for controlling the height dimension and higher end face flatness of front chamfering, and product end surface is not
Oarsman；After the front chamfering, the leading section of punch 53 is provided with front chamfering work 531, the size of the front chamfering work 531
More than the endoporus aperture size of the pre- hole material of pier, its height is slightly above the bore depth of the pre- hole material of pier, and by front chamfering die 52
Rear die orifice enter front chamfering die 52 inner chamber.
As shown in figure 3, the drawing module includes being corresponding in turn to punch 61, drawing die 62 and drawing before the drawing of setting
Punch 63 afterwards, before the drawing, punch 61 includes the drawing work band 611 being sequentially connected and drawing work 612, the drawing
The size of work 612 is equal to caliber size in product, and the drawing work is straight less than drawing work head with 611 diameter dimension
The 0.3mm of footpath size, the drawing die 62 are straight-through mould, die cavity rear portion of the punch 63 by drawing die 62 after the drawing
Into the inner chamber of drawing die 62；
As shown in figure 4, the chamfering cuts off punch 71 and chamfering before module includes being corresponding in turn to the rear chamfering of setting cutting off
Synchronous mould 72, before the rear chamfering, punch 71 is provided with steam vent 711, enters product endoporus with punch 71 before chamfering after guarantee
Afterwards, in hole, air and oil can be discharged in time, it is to avoid powerful air pressure lower punch deviation phenomenon and product be had undesirable effect；Institute
Stating chamfering and cutting off synchronous mould 72 includes that the rear chamfering die 721, right angle being sequentially connected cuts off step 722 and rear die orifice 723, described
The surface of internal cavity of chamfering die 721 is the inside conical surface for tightening afterwards, and its frustoconical bevel angle is the angle of chamfering after product, its conical surface bottom
The inner chamber bore in portion is more than bore 0.10-0.35mm in product；The right angle is cut off, and uses
In cutting off bed material.
Punch 61, fixed cutting tool mould 11, moving cutting tool 12, a pier die 22, two before punch 41, drawing before the pre- hole of the pier
The pre- hole die 42 of pier die 32, pier, front chamfering die 52, drawing die 62, chamfering are cut off synchronous mould 72 and are alloy material system
Into surface smoothness is good, and the Product Precision produced, qualification rate are high, and can bear big pier extruding force.
Punch 51, drawing lordosis before punch 41, front chamfering before the pre- hole of punch 31, pier before punch 21, two piers before one pier
Before before mould 61, rear chamfering, punch 71 is in turn secured to one on punch slide plate 10, and with front 10 synchronizing moving of punch slide plate；It is described solid
Cutter mould 11, a pier die 22, the pre- hole die 42 of two pier dies 32, pier, front chamfering die 52, drawing die 62 and chamfering are cut
Disconnected synchronization mould 72 is in turn secured in a fixed plate 20；Punch behind the pre- hole of punch 33, pier after punch 23, two piers after one pier
43rd, it is after after front chamfering, after punch 53 and drawing, punch 63 is in turn secured to one on punch slide plate (not being given in figure) and subsequently convex
Mould slide plate synchronizing moving；The moving cutting tool 12 and operating clamp 8 operate in module (not being given in figure), and with operating located at one
Module synchronization is moved, and includes 5 sector gears in the operating module, and the quantity of the operating clamp 8 is 5 secondary, is respectively arranged on
At the front die orifice of one pier die 22, the pre- hole die 42 of two pier dies 32, pier, front chamfering die 52 and drawing die 62,5 secondary operatings
Clamp 8 is connected with 5 sector gears respectively, and completes upset by sector gear, and after this station completes work, operate clamp
8 synchronously transport the labor and materials upset to be added of this station or flat sending to next station.
Thin-walled hollow alignment pin can be completed High-Speed Automatic using the cold upset extrusion shaping device of above-mentioned thin-walled hollow alignment pin
The production of axle, concrete production process is as shown in figure 5, comprise the following steps：
(1) with disk circle material as raw material, disk raw material is cut by product specification using moving cutting tool 12, obtains cylinder
Blank material；
(2) blank material is transported to moving cutting tool 12 the front die orifice of a pier die 22, before front punch slide plate 10 drives a pier
Punch 21 slides, and blank material is pushed carries out pier pressure in a pier die 22, and after pier pressure terminates, rear punch slide plate is moved forward, band
After a dynamic pier, punch 23 is moved, and after a pier, the blank material after first time pier pressure is pushed away by punch 23 by the rear die orifice of a pier die 22
Go out to operating clamp 8, obtain a pier embryo 101；
(3) a pier embryo 101 is overturn 180 ° by the clamp 8 that operates, and is transported to the front die orifice of two pier dies 32, front punch slide plate
Before 10 two piers of drive, punch 31 slides, and a pier embryo 101 is pushed carries out pier pressure, after pier pressure terminates, rear punch in two pier dies 32
Slide plate is moved forward, and after driving two piers, punch 33 is moved, and after two piers, punch 33 will be for the second time by the rear die orifice of two pier dies 32
A pier embryo 101 after pier pressure is pushed out on operating clamp 8, obtains two pier embryos 102；After a pier and the compacting of two piers, under cutting
The disk circle material blank for coming is into the cylinder of even circumferential；
(4) two pier embryos 102 are overturn 180 ° by the clamp 8 that operates, and are transported to the front die orifice of the pre- hole die of pier 42, and front punch is slided
Plate 10 drives before the pre- hole of pier punch 41 to pre- 42 punching press of hole die of pier, two pier embryos 102 is pushed in the pre- hole die of pier 42, and is passed through
The pre- hole of the pier of its end works head, and on the end face of two pier embryos 102, (it is front end that two pier embryos 102 have the end faces in pier hole in pier hole
Face), obtain the pre- hole of pier and expect 103；Wherein, the pier hole of two pier embryos 102 is smaller in size than the endoporus into front corner material 104 described below
Aperture size, front chamfering length of its depth for product, so that the chamfering of molding is substantially, meets product requirement；After pier pressure terminates,
After punch slide plate drives the pre- hole of pier afterwards, punch 43 is moved, and behind the pre- hole of pier, punch 43 is pre- by pier by the rear die orifice of the pre- hole die of pier 42
Hole material 103 is pushed out on operating clamp 8；
(5) clamp 8 is operated by 180 ° of 103 upset of pier pre- hole material, and be transported to the front die orifice of front chamfering die 52, front punch
Before slide plate 10 drives front chamfering, punch 51 slides, and pier pre- hole material 103 is pushed in front chamfering die 52, now, and the pre- hole of pier expects 103
The outer of front end face contact with the intracavity bottom of front chamfering die 52, meanwhile, after front chamfering, convex film 53 is by front chamfering die
52 rear die orifice is moved at the chamfering step 521 of front chamfering die 52, and its front chamfering work 531 expects 103 with the pre- hole of pier
Pier hole pier pressure again；During pier pressure, in the presence of the chamfering step 521 of the intracavity bottom of front chamfering die 52, the pre- hole of pier
The outer of the front end face of material 103 forms chamfering, and using the slight flat step 522 of bottom, the height gauge of chamfering before control
Very little and higher end face flatness, obtains into front corner material 104；After pier pressure terminates, after front chamfering, convex film 53 is continued to move along,
Operating clamp 8 will be pushed out to into front corner material 104；
(6) clamp 8 that operates will overturn 180 ° into front corner material 104, and be transported to the front die orifice of drawing die 62, and front punch is slided
Before plate 10 drives drawing, punch 61 slides, and will push in drawing die 62 into front corner material 104, and now before drawing, punch 61 continues fortune
It is dynamic, its drawing work 612 with coordinate into the pier hole of front corner material 104, and inwardly advance, will be into 104 drawing of front corner material to product
The height of requirement, obtains drawing material 105, after drawing terminates, after drawing convex film by the die cavity rear portion of drawing die 62 by drawing
Material 105 is pushed out to operating clamp 8；
(7) clamp 8 that operates delivers to the front die orifice that chamfering cuts off synchronous mould 72 by drawing material 105 flat, punch 71 before rear chamfering
External diameter it is consistent with the internal orifice dimension of drawing material 105, when before rear chamfering, punch 71 is advanced to drawing material 105, punch before rear chamfering
71 are enclosed within the aperture of drawing material 105, drawing material 105 is pushed rear chamfering and is cut off in synchronous mould 72, and in rear chamfering die 721
The conical surface in the presence of, formed chamfering；Before chamfering, punch 71 continues propulsion afterwards, cuts off the bed material on step 722 using right angle and cuts
Breaking, the bed material of drawing material 105 is cut off, and obtains thin-walled hollow alignment pin finished product 106；Finally, before rear chamfering punch 71 with
106 rollback of thin-walled hollow alignment pin finished product, in the presence of material returned disk 9, by thin-walled hollow alignment pin finished product 106 from it is rear fall
Depart from punch 71 before angle, complete Product processing.
Claims (7)
1. a kind of cold upset extrusion shaping device of thin-walled hollow alignment pin, it is characterised in that including blank module, a pier module,
The pre- casement group of two pier modules, pier, front chamfering module, drawing module, chamfering cut off module, material returned disk and operating clamp, wherein：
The blank module includes fixed cutting tool mould and moving cutting tool, for disk circle material is cut into cylinder chaeta by product specification
Blank；
The one pier module includes being corresponding in turn to before a pier of setting punch after punch, a pier die and a pier, and a pier is recessed
Mould is the die that inner chamber is cylinder, and which has front die orifice and rear die orifice, and die orifice is less than front die orifice thereafter, punch after a pier
The inner chamber of one pier die is entered by die orifice thereafter, for blank material is processed into a pier embryo；
The two piers module includes being corresponding in turn to before two piers of setting punch after punch, two pier dies and two piers, and two pier is recessed
Mould is the die that inner chamber is cylinder, and which has front die orifice and rear die orifice, and die orifice is less than front die orifice thereafter, punch after two piers
The inner chamber of two pier dies is entered by die orifice thereafter, for a pier embryo is processed into two pier embryos；
The pre- casement group of the pier includes before the pre- hole of the pier for being corresponding in turn to setting punch, institute behind punch, the pre- hole die of pier and the pre- hole of pier
Before stating the pre- hole of pier, the leading section of punch is provided with the pre- hole of pier and works head, and the pre- hole die of the pier is inner chamber for the die of cylinder, its
With front die orifice and rear die orifice, die orifice is less than front die orifice thereafter, and behind the pre- hole of the pier, punch enters the pre- hole of pier by die orifice thereafter
The inner chamber of die, in the front end face pier hole of two pier embryos, obtaining into the pre- hole material of pier；
The front chamfering module includes being corresponding in turn to before the front chamfering of setting punch, institute after punch, front chamfering die and front chamfering
State front chamfering die and there is front die orifice and rear die orifice, its forward and backward die orifice joint is provided with down by the angle requirement of chamfering before product
Angle step, the inner chamber bore of its chamfering step bottom form a land plateau more than die orifice bore thereafter, convex after the front chamfering
The leading section of mould is provided with front chamfering work head, and is used for into the inner chamber of front chamfering die by the rear die orifice of front chamfering die
The outer pier of the front end face that pier pre- hole is expected obtains into front corner material into chamfering；
The drawing module includes being corresponding in turn to before the drawing of setting punch after punch, drawing die and drawing, before the drawing
Punch includes the drawing work band being sequentially connected and drawing work head, and the size of the drawing work head is equal to bore chi in product
Very little, the diameter dimension of the drawing work band is less than the 0.3mm of drawing work head diameter dimension, and the drawing die is straight-through
Mould, after the drawing, punch enters the inner chamber of drawing die by the die cavity rear portion of drawing die, for by the pier into front corner material
The inside drawing in pre- hole, obtains drawing material；
The chamfering is cut off punch and chamfering before module includes being corresponding in turn to the rear chamfering of setting and cuts off synchronous mould, the rear chamfering
The size and the interior bore consistent size of drawing material of the work head of front punch, which is provided with steam vent；The chamfering cuts off synchronization
Mould includes that the rear chamfering die being sequentially connected, right angle cut off step and rear die orifice, the surface of internal cavity of the rear chamfering die be to
The conical surface of interior deflation, its frustoconical bevel angle are the angle of chamfering after product, and the inner chamber bore of its conical surface bottom is more than bore in product
0.10-0.35mm；The right angle is cut off, for by the bottom surface outer pier of drawing material into it is rear fall
Angle, then bottom surface is cut off, obtain thin-walled hollow alignment pin finished product；
The material returned disk is cut off between synchronous mould with chamfering located at punch before rear chamfering.
2. the cold upset extrusion shaping device of a kind of thin-walled hollow alignment pin according to claim 1, it is characterised in that described
The front punch of one pier, the front punch of two piers, before punch, the front punch of front chamfering, the front punch of drawing, rear chamfering, punch is solid successively before the pre- hole of pier
On punch slide plate before, and with front punch slide plate synchronizing moving；
The fixed cutting tool mould, a pier die, two pier dies, the pre- hole die of pier, front chamfering die, drawing die and chamfering are cut off
Synchronous mould is in turn secured in fixed plate；
After punch after punch, two piers after one pier, the pre- hole of pier, after punch, front chamfering, after punch and drawing, punch is in turn secured to
After one on punch slide plate, and subsequently punch slide plate synchronizing moving.
3. the cold upset extrusion shaping device of a kind of thin-walled hollow alignment pin according to claim 1, it is characterised in that described
Punch before punch, drawing before the pre- hole of pier, fixed cutting tool mould, moving cutting tool, a pier die, two pier dies, the pre- hole die of pier, it is front fall
Angle die, drawing die, chamfering are cut off synchronous mould and are alloy material and make.
4. the cold upset extrusion shaping device of a kind of thin-walled hollow alignment pin according to claim 1, it is characterised in that described
The endoporus aperture size for being smaller in size than into front corner material of the pre- hole work head of pier, front chamfering length of its depth for product.
5. the cold upset extrusion shaping device of a kind of thin-walled hollow alignment pin according to claim 1, it is characterised in that described
Endoporus aperture size of the size of front chamfering work head more than the pre- hole material of pier, which is highly higher than the bore depth of the pre- hole material of pier.
6. the cold upset extrusion shaping device of a kind of thin-walled hollow alignment pin according to claim 1, it is characterised in that described
Moving cutting tool and operating clamp are in operating module, and with operating module synchronizing moving, include some in the operating module
Sector gear, the operating clamp are connected with sector gear, and complete upset by sector gear.
7. the cold upset extrusion shaping device of a kind of thin-walled hollow alignment pin according to claim 1, it is characterised in that described
The quantity of operating clamp is 5 secondary, is respectively arranged on a pier die, two pier dies, the pre- hole die of pier, front chamfering die and drawing die
Front die orifice at.
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| CN201510757084.8A CN105234321B (en) | 2015-11-05 | 2015-11-05 | A kind of cold upset extrusion shaping device of thin-walled hollow alignment pin |
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| CN201510757084.8A CN105234321B (en) | 2015-11-05 | 2015-11-05 | A kind of cold upset extrusion shaping device of thin-walled hollow alignment pin |
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| CN105234321B true CN105234321B (en) | 2017-04-05 |
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| US3359582A (en) * | 1965-11-22 | 1967-12-26 | Bethlehem Steel Corp | Die assembly for making chamfer headed nails |
| CN1231313C (en) * | 2002-02-04 | 2005-12-14 | 杨东佐 | Multifunctional part forming mechanism without grab |
| JP2005330997A (en) * | 2004-05-18 | 2005-12-02 | Tsubakimoto Chain Co | Cylindrical bearing member and manufacturing method thereof |
| KR101283225B1 (en) * | 2011-10-19 | 2013-07-11 | 이형춘 | The Manufacturing Method and Its Apparatus for Spring Pin |
| CN205183625U (en) * | 2015-11-05 | 2016-04-27 | 安徽黄山中友链条制造有限公司 | Hollow positioning pin's of thin wall crowded forming device of cold -heading |
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Application publication date: 20160113 Assignee: Jixi Huangshan Industrial Co.,Ltd. Assignor: HUANGSHAN ZHONGYOU CHAIN MANUFACTURE Co.,Ltd. OF ANHUI Contract record no.: X2024980004538 Denomination of invention: A Cold Heading and Extrusion Forming Device for Thin Wall Hollow Positioning Pin Shafts Granted publication date: 20170405 License type: Common License Record date: 20240424 |