CN107413999A - Turret head cross recess fastener upsetting forming method and mould - Google Patents
Turret head cross recess fastener upsetting forming method and mould Download PDFInfo
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- CN107413999A CN107413999A CN201710459540.XA CN201710459540A CN107413999A CN 107413999 A CN107413999 A CN 107413999A CN 201710459540 A CN201710459540 A CN 201710459540A CN 107413999 A CN107413999 A CN 107413999A
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- closed
- core
- upsetting
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- mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/44—Making machine elements bolts, studs, or the like
- B21K1/46—Making machine elements bolts, studs, or the like with heads
- B21K1/48—Machines working with hammers, e.g. beating in a radial direction, for forming heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/44—Making machine elements bolts, studs, or the like
- B21K1/46—Making machine elements bolts, studs, or the like with heads
- B21K1/50—Trimming or shearing formed heads, e.g. working with dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention provides a kind of turret head cross recess fastener upsetting forming method, by closed just upsetting, by workpiece top, upsetting system is shaped to fastener head in closed first forming recess between punch die, matrix and lower mould, workpiece bottom is shaped to fasteners shank in lower loft hole, the mould that methods described uses includes：Closed just punch die, lower mould and matrix；It is closed just punch die, including spring cushion block, spring, it is closed just punching set, it is closed just rush core and closing just push rod.For forming method of the present invention using closed just upsetting, fastener upsetting forming process is more stable, can effectively avoid the generation of upsetting unstable phenomenon；During the upsetting of closed just upsetting, workpiece is molded in the forming recess of closing, and the product size uniformity of first upsetting shaping is good；Achievable fastener head is shaped to main deformed area and auxiliary deformation area, and auxiliary deformation plot structure can avoid cross recess upsetting problems of crack caused by deforming acutely during smart upsetting.
Description
Technical field
The invention belongs to field of machining, more particularly, to a kind of turret head cross recess fastener mold and shaping side
Method.
Background technology
Turret head cross recess fastener is the structure design that cross recess is added on the basis of hexagonal-head fastener structure,
It is not only suitable for hexagon plate to twist, is twisted again suitable for cross frid, and there is higher tensile strength, thus is answered with extensive
With.
The head materials of turret head cross recess fastener are more and head dummy is complicated, during type is made in upsetting, due to
Fastener head deformation is violent, and upsetting unstable phenomenon easily occurs, and upsetting unstability can cause fastener upsetting deformation whard to control, production
Product dimensional uniformity is poor；Upsetting unstability also results in fine fault trough, causes the average life of fine less than 1000.
The content of the invention
In view of this, the present invention is directed to propose being rushed at the beginning of one kind is closed, to solve existing turret head cross recess fastener
Cause the problem of homogeneity of product is poor, fine service life is short easily occurring upsetting unstability during upsetting.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of turret head cross recess fastener upsetting forming method, including：
Wire rod is cut into the workpiece of predetermined length according to design requirement；
Workpiece is sent to upsetting station by feed mechanism, workpiece is fixed by closed just punch die and lower mould；
By closed just upsetting, by workpiece top in closed just upsetting in the forming recess between punch die, matrix and lower mould
System is shaped to fastener head, and workpiece bottom is shaped into fasteners shank in lower loft hole；
The mould that methods described uses includes：Closed just punch die, lower mould and matrix；
It is closed just punch die, including spring cushion block, spring, it is closed just punching set, it is closed just rush core and closing just push rod,
Just push rod and workpiece can be closed just push rod and spring cushion block limit the upside of workpiece in the closed core bore movement for just rushing core for closing
Position；Forming recess include it is closed just rush core core bore lower end cavity, matrix correspond to core bore set ring-shaped cavity and under
Mould；Workpiece can be moved in the string holes of lower mould, and lower push rod is also included in the string holes of lower mould, and lower push rod limits the lower position of workpiece；
Die attachment is in lower mould surface；
The closed just punch die is fixed on cold headers, is displaced into workpiece by the feed mechanism of cold headers closed
Just between punching and lower mould, the closed just upsetting of fastener head and fasteners shank is carried out to the workpiece.
Further, closed just upsetting comprises the following steps：
S1：The closed downward mould direction movement of just punch die, workpiece is just rushed in the core bore of core into closed, while promotes envelope
Close first push rod to slide in closed just rush in the core bore of core, the push rod at the beginning of rear enclosed is contacted with spring cushion block stops sliding；
S2：Closed just punch die continues the movement of downward mould direction, after workpiece enters in the string holes of lower mould and promotes lower push rod
Move, the forming recess that closing is formed after core contacts with the matrix of lower mould surface is rushed at the beginning of closed；
S3：Closed just punch die continues downward mould direction movement, and closed just punch die slides simultaneously in closed just punching set
Extrusion spring, the reaction force of spring makes the closed core that just rushes produce mold clamping force with lower intermode, while workpiece continues along lower mould
String holes movement stops movement after specified location will be moved to after lower push rod；
S4：Closed just punch die continues the movement of downward mould direction, workpiece be squeezed power it is closed just rush core, matrix and
It is plastically deformed in the forming recess that lower mould is formed；
S5：Closed just punch die is moved to specified location, and workpiece completes just upsetting.
Further, one-level aperture and two level aperture are provided with closed just punching set, one-level aperture is less than two level aperture, envelope
Just rush core includes core body, core bore and core extension to enclosed, and core body external diameter is less than core extension external diameter, and core body can be along one-level aperture
Mobile, core extension can move along two level aperture and be limited to one-level aperture, and core extension limits the closed core that just rushes closed first
The position limit of movement in from punching set to one-level aperture direction；
Spring is arranged in closed just punching set, and spring both sides are respectively with spring cushion block and closed just rushing the core extension of core
Compress；
Spring and spring cushion block and the i.e. mobile pole of the up moving process of workpiece can be just limited during upsetting closed
Extreme position, the first push rod of closing can also be recovered to original position automatically after closed first upsetting process terminates.
Lower push rod bottom also is provided with recovering the elastic mechanism of position.The elastic mechanism includes spring.
Just push rod moves in core bore and is limited to spring cushion block in two level aperture direction for closing.
Further, the one-level aperture of closed just punching set coordinates with the closed core body external diameter for just rushing core for gap.
Further, the one-level aperture of closed just punching set and the clearance distance of the closed core body external diameter for just rushing core are
0.05-0.15mm。
Further, the bar footpath of the closed core bore for just rushing core and the first push rod of closing is that gap coordinates.
Further, the closed core bore for just rushing core and the clearance distance in the bar footpath of the first push rod of closing are 0.02-0.05mm.
Further, the closed core bore aperture for just rushing core is slightly larger than the string holes aperture of lower mould.
Further, the fastener head of closed just upsetting shaping includes main deformed area and auxiliary deformation area.
Further, auxiliary deformation area is located at the end of main deformed area, and auxiliary deformation area is fastener head in first upsetting
Less end is deformed in journey.In the fastener head forming process of i.e. closed just upsetting, the deformation of fastener head reserved part
Less end.
Further, after closed just upsetting, then smart upsetting is carried out to fastener head by cross recess fine blanking die and marked
Quasi- cross recess groove profile.
The present invention also provides a kind of turret head cross recess fastener upsetting mould, and the mould includes closed just punching
Mould, matrix and lower mould, it is closed just punch die, including spring cushion block, spring, it is closed just punching set, it is closed just rush core and closing
First push rod, close just push rod and workpiece can in the closed core bore movement for just rushing core, it is closed just rush core in the lower end of core bore
Provided with forming recess；Workpiece can move in the string holes of lower mould, also include lower push rod in the string holes of lower mould.
One-level aperture and two level aperture are provided with closed just punching set, one-level aperture is less than two level aperture, closed just to rush
Core includes core body, core bore and core extension, and core body external diameter is less than core extension external diameter, and core body can move along one-level aperture, core
Extension can move along two level aperture and be limited to one-level aperture, core extension limit it is closed just rush core it is closed just punching set in
The position limit of the movement in one-level aperture direction；
Spring is arranged in closed just punching set, and spring both sides are respectively with spring cushion block and closed just rushing the core extension of core
Compress；
Just push rod moves in core bore and is limited to spring cushion block in two level aperture direction for closing.
Relative to prior art, turret head cross recess fastener upsetting forming method and mould of the present invention have with
Lower advantage：
(1) using closed just upsetting, fastener upsetting forming process is more stable, can effectively avoid the hair of upsetting unstable phenomenon
It is raw；
(2) during the upsetting of closed just upsetting, workpiece is molded in the forming recess of closing, the product chi of first upsetting shaping
Very little uniformity is good；
(3) due to effectively prevent upsetting unstable phenomenon, the service life of fine within 1000 by increasing as 10000
More than, fine service life greatly improves；Because upsetting forming process is stable, fine service life is high, reduce more mold exchange,
The number of lathe, production efficiency significant increase are modulated, production cost effectively reduces；
(4) closed just upsetting is easily controlled the forming process and shaping result of fastener head, and fastener head can be achieved
Main deformed area and auxiliary deformation area is shaped to, cross recess is because deformation is acutely led during auxiliary deformation plot structure can avoid smart upsetting
The problems such as upsetting of cause is ftractureed, smart upsetting end face injustice；
(5) auxiliary deformation plot structure can also avoid fine cross recess trough from deforming and wear, can significant increase fine blanking die
The service life of tool.
Brief description of the drawings
The accompanying drawing for forming the part of the invention is used for providing further understanding the invention, present invention wound
The schematic description and description made is used to explain the invention, does not form the improper restriction to the invention.
In accompanying drawing：
Fig. 1 is the schematic diagram of the closed just punch die described in the embodiment of the present invention；
Fig. 2 is the decomposing schematic representation of the closed just punch die described in the embodiment of the present invention；
Fig. 3 is the initial state schematic diagram of closed just upsetting described in the embodiment of the present invention；
Fig. 4 is the step S1 schematic diagrames of closed just upsetting described in the embodiment of the present invention；
Fig. 5 is the step S2 schematic diagrames of closed just upsetting described in the embodiment of the present invention；
Fig. 6 is the step S3 schematic diagrames of closed just upsetting described in the embodiment of the present invention；
Fig. 7 is the step S4 schematic diagrames of closed just upsetting described in the embodiment of the present invention；
Fig. 8 is the step S5 schematic diagrames of closed just upsetting described in the embodiment of the present invention.
Description of reference numerals：
The closed just punch dies of 1-；2- workpiece；3- matrixs；Mould under 4-；5- string holes；6- spring cushion blocks；7- springs；8- is closed
Just punching set；81- one-levels aperture；82- two levels aperture；The first push rod of 9- closings；10- is closed just to rush core；101- core bodies；102- cores
Hole；103- core extensions；104- forming recess.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the invention can
To be mutually combined.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the invention and simplifies description, rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For the limitation to the invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined
Feature can express or implicitly include one or more this feature.In the description of the invention, unless separately
It is described, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the invention
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the invention.
1-8 and describe the present invention in detail in conjunction with the embodiments below with reference to the accompanying drawings.
Technical scheme technical problem to be solved in embodiment includes：1, the head of turret head cross recess fastener is used
Expect that more and head dummy is complicated, during type is made in upsetting, because fastener head deformation is violent, upsetting unstability easily occurs and shows
As upsetting unstability can cause fastener upsetting deformation to be difficult to control, and product size uniformity is poor；Upsetting unstability also results in fine
Fault trough, cause the average life of fine less than 1000；2, during fine cross recess, the cross recess of fastener head is due to becoming
Shape acutely causes upsetting to be ftractureed and smart upsetting end face injustice etc. technical problem, the fine blanking die of cross recess trough easily deform and
Abrasion causes the fine blanking die life-span relatively low；3, closed just upsetting step is carried out in forming recess 104, it is necessary to set in order to realize
A kind of mould simple in construction, that closed just upsetting can be achieved.
A kind of turret head cross recess fastener upsetting forming method, including：
Wire rod is cut into the workpiece 2 of predetermined length according to design requirement；
Workpiece 2 is sent to upsetting station by feed mechanism, workpiece 2 is fixed by closed just punch die 1 and lower mould 4；Work
The upper end alignment of part 2 is closed just to rush the closed of film and just rushes the core bore 102 of core 10, the string holes of mould 4 under the lower end aligned of workpiece 2
5, the perforate of matrix 3 forms ring-shaped cavity, and the lower surface of mould 4, such as Fig. 3 are fixed on after the string holes 5 of the lower mould 4 of perforate alignment of matrix 3
It is shown.
By closed just upsetting, by the top of workpiece 2 in the closed just forming recess between punch die 1, matrix 3 and lower mould 4
Upsetting system is shaped to fastener head in 104, and the bottom of workpiece 2 is shaped into fasteners shank in the lower string holes 5 of mould 4；
The mould that methods described uses includes：Closed just punch die 1, lower mould 4 and matrix 3；
It is closed just punch die 1, as shown in Figure 1-2, including spring cushion block 6, spring 7, it is closed just punching set 8, it is closed just
Core 10 and closing just push rod 9 are rushed, closing just push rod 9 and workpiece 2 can move in the closed core bore 102 for just rushing core 10, and closing is just
Push rod 9 and spring cushion block 6 limit the upper side position of workpiece 2；Forming recess 104 includes the closed core bore 102 for just rushing core 10
The ring-shaped cavity and lower mould 4 that the corresponding core bore 102 of lower end cavity, matrix 3 is set；Workpiece 2 can move in the string holes 5 of lower mould 4, lower mould
Also include lower push rod in 4 string holes 5, lower push rod limits the lower position of workpiece 2；
Matrix 3 is fixed on the lower surface of mould 4；
The closed just punch die 1 is fixed on cold headers, and workpiece 2 is displaced into closing by the feed mechanism of cold headers
Between punching and lower mould 4, the closed just upsetting of fastener head and fasteners shank is just carried out to the workpiece 2 for formula.
Further, closed just upsetting comprises the following steps：
As shown in figure 4, S1：The closed downward direction of mould 4 movement of just punch die 1, workpiece 2 enter the closed core for just rushing core 10
In hole 102, while the closing just slip in the closed core bore 102 for just rushing core 10 of push rod 9 is promoted, contacted when with spring cushion block 6
Just push rod 9 stops sliding rear enclosed；
As shown in figure 5, S2：Closed just punch die 1 continues the downward direction of mould 4 movement, and workpiece 2 enters in the string holes 5 of lower mould 4
And moved after promoting lower push rod, the forming recess that closing is formed after core 10 contacts with the matrix 3 on the lower surface of mould 4 is rushed at the beginning of closed
104；
As shown in fig. 6, S3：Closed just punch die 1 continues the downward direction of mould 4 movement, and closed just punch die 1 is closed first
Slided in punching set 8 and extrusion spring 7, the reaction force of spring 7 make closed just rush between core 10 and lower mould 4 produce mold clamping force, together
When workpiece 2 continue to move along the string holes 5 of lower mould 4 to move to after lower push rod after specified location and stop moving；
As shown in fig. 7, S4：Closed just punch die 1 continues the downward direction of mould 4 movement, and workpiece 2 is squeezed power closed
Just rush in the forming recess 104 that core 10, matrix 3 and lower mould 4 are formed and be plastically deformed；
As shown in figure 8, S5：Closed just punch die 1 is moved to specified location, and workpiece 2 completes just upsetting.
Further, one-level aperture 81 and two level aperture 82 are provided with closed just punching set 8, one-level aperture 81 is less than two level
Aperture 82, closed just rushing core 10 includes core body 101, core bore 102 and core extension 103, and the external diameter of core body 101 is less than core extension
103 external diameters, core body 101 can move along one-level aperture 81, and core extension 103 can move along two level aperture 82 and be limited to one-level hole
Footpath 81, core extension 103 limit the closed core 10 that just rushes in the position of the closed 8 interior movement to the direction of one-level aperture 81 of just punching set
The limit；
Spring 7 be arranged on it is closed just punching set 8 in, the both sides of spring 7 respectively with spring cushion block 6 and it is closed just rush core 10
Core extension 103 compresses；
Spring 7 and spring cushion block 6 and can it be moved in the closed up moving process of workpiece 2 that just limits during upsetting
Extreme position, the first push rod 9 of closing can also be recovered to original position automatically after closed first upsetting process terminates.
Lower push rod bottom also is provided with recovering the elastic mechanism of position.The elastic mechanism includes spring 7.
Just push rod 9 moves in core bore 102 and is limited to spring cushion block 6 in the direction of two level aperture 82 for closing.
The one-level aperture 81 of closed just punching set 8 coordinates with the closed external diameter of core body 101 for just rushing core 10 for gap.
The closed core body 101 for just rushing core 10 is freely slidable in the one-level aperture 81 of closed just punching set 8.
The one-level aperture 81 of closed just punching set 8 and the clearance distance of the closed external diameter of core body 101 for just rushing core 10 are
0.05-0.15mm。
The bar footpath of the closed core bore 102 for just rushing core 10 and the first push rod 9 of closing is that gap coordinates.
Just push rod 9 is freely slidable in the closed core bore 102 for just rushing core 10 for closing.
The closed core bore 102 for just rushing core 10 and the clearance distance in the bar footpath of the first push rod 9 of closing are 0.02-0.05mm.
The closed aperture of core bore 102 for just rushing core 10 is slightly larger than the aperture of string holes 5 of lower mould 4.
The closed aperture of core bore 102 for just rushing core 10 bigger ensure that workpiece 2 initially enters and closed just rushes the core of core 10
In hole 102, enter back into the string holes 5 of lower mould 4.Workpiece 2 initially enter it is closed just rush in core 10, workpiece 2 is during first upsetting
Displacement is not susceptible to, meanwhile, string holes 5 defines the external diameter of fasteners shank, and therefore, the aperture of string holes 5 should be smaller, avoids fastening
Excessive deformation occurs for part bar portion.
The fastener head of closed just upsetting shaping includes main deformed area and auxiliary deformation area.
Auxiliary deformation area is located at the end of main deformed area, auxiliary deformation area be fastener head deformed during first upsetting compared with
Small end.In the fastener head forming process of i.e. closed just upsetting, fastener head reserved part deforms less end.
In precision process, fine blanking die deforms in first upsetting and carries out smart upsetting in less auxiliary deformation area for reserved end, avoids straight
It is connected on and deforms directly smart upsetting on larger main deformed area, causes main deformed area that larger shape occurs again after occurring compared with large deformation
Change, larger deformation process, which is easily caused fastener head, twice acutely causes cracking, end face injustice and mould because of deformation by shadow
Pilot causes the deformation of cross recess trough and abrasion.
After closed just upsetting, then smart upsetting is carried out to fastener head by cross recess fine blanking die and obtains standard cross recess groove
Type.
The present invention also provides a kind of turret head cross recess fastener upsetting mould, and the mould includes closed just punch die
1st, matrix 3 and lower mould 4, it is closed just punch die 1, including spring cushion block 6, spring 7, it is closed just punching set 8, it is closed just rush core 10
And the first push rod 9 of closing, closing just push rod 9 and workpiece 2 can move in the closed core bore 102 for just rushing core 10, closed just to rush core
10 in the lower end of core bore 102 are provided with forming recess 104；Workpiece 2 can move in the string holes 5 of lower mould 4, in the string holes 5 of lower mould 4 also
Including lower push rod.
One-level aperture 81 and two level aperture 82 are provided with closed just punching set 8, one-level aperture 81 is less than two level aperture 82, envelope
Just rush core 10 includes core body 101, core bore 102 and core extension 103 to enclosed, and the external diameter of core body 101 is less than the external diameter of core extension 103,
Core body 101 can move along one-level aperture 81, and core extension 103 can move along two level aperture 82 and be limited to one-level aperture 81, core
Extension 103 limits the closed position limit for just rushing core 10 in the closed 8 interior movement to the direction of one-level aperture 81 of just punching set；
Spring 7 be arranged on it is closed just punching set 8 in, the both sides of spring 7 respectively with spring cushion block 6 and it is closed just rush core 10
Core extension 103 compresses；
Just push rod 9 moves in core bore 102 and is limited to spring cushion block 6 in the direction of two level aperture 82 for closing.
Turret head cross recess fastener upsetting mould provided by the invention has reasonable in design, simple, upsetting system
The advantages that forming process is steadily controllable, and die wear is small, and service life is long.
Relative to prior art, turret head cross recess fastener upsetting forming method and mould of the present invention have with
Lower advantage：
(1) using closed just upsetting, fastener upsetting forming process is more stable, can effectively avoid the hair of upsetting unstable phenomenon
It is raw；
(2) during the upsetting of closed just upsetting, workpiece 2 is molded in the forming recess 104 of closing, the production of first upsetting shaping
Product dimensional uniformity is good；
(3) due to effectively prevent upsetting unstable phenomenon, the service life of fine within 1000 by increasing as 10000
More than, fine service life greatly improves；Because upsetting forming process is stable, fine service life is high, reduce more mold exchange,
The number of lathe, production efficiency significant increase are modulated, production cost effectively reduces；
(4) closed just upsetting is easily controlled the forming process and shaping result of fastener head, and fastener head can be achieved
Main deformed area and auxiliary deformation area is shaped to, cross recess is because deformation is acutely led during auxiliary deformation plot structure can avoid smart upsetting
The problems such as upsetting of cause is ftractureed, smart upsetting end face injustice；
(5) auxiliary deformation plot structure can also avoid fine cross recess trough from deforming and wear, can significant increase fine blanking die
The service life of tool.
The preferred embodiment of the invention is the foregoing is only, is not intended to limit the invention creation, it is all at this
Within the spirit and principle of innovation and creation, any modification, equivalent substitution and improvements made etc., the invention should be included in
Protection domain within.
Claims (10)
1. turret head cross recess fastener upsetting forming method, it is characterised in that including：
Wire rod is cut into the workpiece (2) of predetermined length according to design requirement；
Workpiece (2) is sent to upsetting station by feed mechanism, workpiece is fixed by closed just punch die (1) and lower mould (4)
(2)；
By closed just upsetting, by workpiece (2) top in the closed just shaping between punch die (1), matrix (3) and lower mould (4)
Die cavity (104) interior upsetting system is shaped to fastener head, and workpiece (2) bottom is shaped into fastener shank in lower mould (4) string holes (5)
Portion；
The mould that methods described uses includes：Closed just punch die (1), lower mould (4) and matrix (3)；
It is closed just punch die (1), including spring cushion block (6), spring (7), it is closed just punching set (8), it is closed just rush core (10)
And the first push rod (9) of closing, close just push rod (9) and workpiece (2) can be mobile in the closed core bore (102) for just rushing core (10), seal
Close just push rod (9) and spring cushion block (6) limits the upper side position of workpiece (2)；Forming recess (104) just rushes core including closed
(10) ring-shaped cavity and lower mould (4) that the corresponding core bore (102) of lower end cavity, matrix (3) of core bore (102) is set；Workpiece (2)
String holes (5) that can be in lower mould (4) is mobile, and lower push rod is also included in the string holes (5) of lower mould (4), and lower push rod is limited under workpiece (2)
Side position；
Matrix (3) is fixed on lower mould (4) surface；
The closed just punch die (1) is fixed on cold headers, and workpiece (2) is displaced into closing by the feed mechanism of cold headers
Between punching and lower mould (4), the closed just upsetting of fastener head and fasteners shank is just carried out to the workpiece (2) for formula.
2. turret head cross recess fastener upsetting forming method according to claim 1, it is characterised in that closed just upsetting
Comprise the following steps：
S1：Closed just punch die (1) mould (4) direction movement downwards, workpiece (2) enter the closed core bore for just rushing core (10)
(102) in, while promote closing just push rod (9) slide in closed just rush in the core bore (102) of core (10), when with spring cushion block
(6) contacting rear enclosed, just push rod (9) stops sliding；
S2：Closed just punch die (1) continues downward mould (4) direction movement, and workpiece (2) enters in the string holes (5) of lower mould (4) and pushed away
Moved after dynamic lower push rod, the forming recess that closing is formed after core (10) contacts with the matrix (3) on lower mould (4) surface is rushed at the beginning of closed
(104)；
S3：Closed just punch die (1) continues downward mould (4) direction movement, and closed just punch die (1) is in closed just punching set (8)
Interior to slide simultaneously extrusion spring (7), the reaction force of spring (7) makes closed just rush between core (10) and lower mould (4) produce mold clamping force,
Mobile will be moved to after lower push rod after specified location of string holes (5) that workpiece (2) continues along lower mould (4) simultaneously stops moving；
S4：Closed just punch die (1) continues downward mould (4) direction movement, and workpiece (2) is squeezed power and just rushes core closed
(10), it is plastically deformed in the forming recess (104) that matrix (3) and lower mould (4) are formed；
S5：Closed just punch die (1) is moved to specified location, and workpiece (2) completes just upsetting.
3. turret head cross recess fastener upsetting forming method according to claim 1, it is characterised in that：It is closed just to rush
One-level aperture (81) and two level aperture (82) are provided with set (8), one-level aperture (81) are less than two level aperture (82), closed just to rush
Core (10) includes core body (101), core bore (102) and core extension (103), and core body (101) external diameter is less than core extension (103) outside
Footpath, core body (101) can be mobile along one-level aperture (81), and core extension (103) can be mobile along two level aperture (82) and be limited to one
Level aperture (81), core extension (103) limit the closed core (10) that just rushes and just rushed in set (8) to one-level aperture (81) side closed
To movement position limit；
Spring (7) be arranged on it is closed just punching set (8) in, spring (7) both sides respectively with spring cushion block (6) and it is closed just rush core
(10) core extension (103) compresses；
Just push rod (9) moves in core bore (102) and is limited to spring cushion block (6) in two level aperture (82) direction for closing.
4. turret head cross recess fastener upsetting forming method according to claim 2, it is characterised in that：It is closed just to rush
The one-level aperture (81) and closed core body (101) external diameter for just rushing core (10) for covering (8) coordinate for gap.
5. turret head cross recess fastener upsetting forming method according to claim 4, it is characterised in that：It is closed just to rush
The one-level aperture (81) and the clearance distance of closed core body (101) external diameter for just rushing core (10) for covering (8) are 0.05-
0.15mm。
6. turret head cross recess fastener upsetting forming method according to claim 3, it is characterised in that：It is closed just to rush
The bar footpath of the core bore (102) of core (10) and the first push rod (9) of closing is that gap coordinates.
7. turret head cross recess fastener upsetting forming method according to claim 6, it is characterised in that：It is closed just to rush
The core bore (102) of core (10) and the clearance distance in the bar footpath of the first push rod (9) of closing are 0.02-0.05mm.
8. turret head cross recess fastener upsetting forming method according to claim 3, it is characterised in that：It is closed just to rush
Core bore (102) aperture of core (10) is slightly larger than string holes (5) aperture of lower mould (4).
9. turret head cross recess fastener upsetting forming method according to claim 1, it is characterised in that：Closed just upsetting
Afterwards, then smart upsetting is carried out to fastener head by cross recess fine blanking die and obtains standard cross recess groove profile.
10. the mould of type is made in a kind of turret head cross recess fastener upsetting for described in claim 1-9 any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710459540.XA CN107413999B (en) | 2017-06-16 | 2017-06-16 | Turret head cross recess fastener upsetting forming method and mold |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710459540.XA CN107413999B (en) | 2017-06-16 | 2017-06-16 | Turret head cross recess fastener upsetting forming method and mold |
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| CN107413999A true CN107413999A (en) | 2017-12-01 |
| CN107413999B CN107413999B (en) | 2019-07-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116921603A (en) * | 2023-06-28 | 2023-10-24 | 珠海聚能精密工业有限公司 | Cold heading shaping device for precision machining with controllable thickness |
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| US843790A (en) * | 1904-06-06 | 1907-02-12 | Carl Schmidt | Upsetting-machine. |
| JPS5916650A (en) * | 1982-07-19 | 1984-01-27 | Asahi Okuma Ind Co Ltd | Die pin damage detecting device of upsetter |
| CN1031339A (en) * | 1987-08-20 | 1989-03-01 | 东北重型机械学院 | Die-revolving high-speed cold header with multiple working positions |
| CN2794711Y (en) * | 2005-04-12 | 2006-07-12 | 东莞济晟精密模具有限公司 | Composite slot screw mould |
| CN102806300A (en) * | 2012-08-13 | 2012-12-05 | 苏州工业园区新凯精密五金有限公司 | Sliding type spring stamping die ejecting mechanism |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US843790A (en) * | 1904-06-06 | 1907-02-12 | Carl Schmidt | Upsetting-machine. |
| JPS5916650A (en) * | 1982-07-19 | 1984-01-27 | Asahi Okuma Ind Co Ltd | Die pin damage detecting device of upsetter |
| CN1031339A (en) * | 1987-08-20 | 1989-03-01 | 东北重型机械学院 | Die-revolving high-speed cold header with multiple working positions |
| CN2794711Y (en) * | 2005-04-12 | 2006-07-12 | 东莞济晟精密模具有限公司 | Composite slot screw mould |
| CN102806300A (en) * | 2012-08-13 | 2012-12-05 | 苏州工业园区新凯精密五金有限公司 | Sliding type spring stamping die ejecting mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116921603A (en) * | 2023-06-28 | 2023-10-24 | 珠海聚能精密工业有限公司 | Cold heading shaping device for precision machining with controllable thickness |
| CN116921603B (en) * | 2023-06-28 | 2024-04-05 | 珠海聚能精密工业有限公司 | Cold heading shaping device for precision machining with controllable thickness |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107413999B (en) | 2019-07-16 |
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