CN109127909A - Hole extruding formed punch, formed punch design method and anti-deforming structure - Google Patents
Hole extruding formed punch, formed punch design method and anti-deforming structure Download PDFInfo
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- CN109127909A CN109127909A CN201811012465.3A CN201811012465A CN109127909A CN 109127909 A CN109127909 A CN 109127909A CN 201811012465 A CN201811012465 A CN 201811012465A CN 109127909 A CN109127909 A CN 109127909A
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- hole
- punch
- punch segment
- segment
- punching press
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a kind of hole extruding formed punch, formed punch design method and anti-deforming structures, hole extruding formed punch, the first punch segment, the First Transition section set on second punch segment in the first punch segment downstream, between the first punch segment and the second punch segment, the second changeover portion set on the third punch segment in the second punch segment downstream and between the second punch segment and third punch segment including being located at formed punch starting point；The starting point diameter of second punch segment is less than or equal to the end diameter of the first punch segment, the end diameter of second punch segment is greater than the end diameter of the first punch segment, and the starting point diameter of the end diameter of the first punch segment and the second punch segment is all larger than the diameter of First Transition section；The starting point diameter of third punch segment is less than or equal to the end diameter of the second punch segment, the end diameter of third punch segment is greater than the end diameter of the second punch segment, and the end diameter of the second punch segment and the starting point diameter of third punch segment are all larger than the diameter of the second changeover portion.
Description
Technical field
The present invention relates to hole-crimped forming technical fields, particularly, are related to a kind of hole extruding formed punch and its design method, this
Anti-deforming structure when a kind of processing for hole flanging is further related to outside.
Background technique
Hole flanging as erects side for translating into bore edges, and hole flanging is that material is translated into edge-on flange around inner hole
A kind of stamping procedure.Formed punch, the metal parts in stamping die in machine tool, be mounted in stamping die carry out it is continuous
Punching punching press thrusts operation, makes machined material that separation or plastic deformation occur, thus finished product required for obtaining or semi-finished product.
It needs to process multiple hole flangings for being used to weld other components on aero-engine casing, in the prior art, uses
Conventional hole flanging punch carries out punching press, and the wall thickness for the hole flanging being stamped and formed out and the wall thickness of casing are identical, but zero due to needing to weld
Hole flanging wall thickness after the wall ratio punching press of component is thin very much, the half of the hole flanging wall thickness even less than after punching press.Due to wall thickness phase
Poor two big components usually generate weld crack in welding heat affected zone, need repair welding repeatedly, part is caused to close in welding
Lattice rate is low.Therefore, by other processing methods such as milling that the hole flanging after punching press is thinning so that the wall thickness of hole flanging and to be welded
The wall thickness of components is consistent, increases the manufacturing procedure of hole flanging, and the process-cycle is long.
Summary of the invention
It is existing to solve the present invention provides a kind of hole extruding formed punch, formed punch design method and anti-deforming structure
Hole flanging punch can not process the technical issues of thinning biggish hole extruding.
According to an aspect of the present invention, a kind of hole extruding formed punch is provided, the first punching including being located at formed punch starting point
Head section, set on second punch segment in the first punch segment downstream, the First Transition between the first punch segment and the second punch segment
Section, the second transition set on the third punch segment in the second punch segment downstream and between the second punch segment and third punch segment
Section；The starting point diameter of second punch segment is less than or equal to the end diameter of the first punch segment, the end diameter of the second punch segment
Greater than the end diameter of the first punch segment, the starting point diameter of the end diameter of the first punch segment and the second punch segment is all larger than
The diameter of one changeover portion；The starting point diameter of third punch segment is less than or equal to the end diameter of the second punch segment, third formed punch
The end diameter of section is greater than the end diameter of the second punch segment, the end diameter of the second punch segment and the starting point of third punch segment
Diameter is all larger than the diameter of the second changeover portion.
Further, the axial length of First Transition section is greater than or equal to hole flanging pre-punched hole part through the first punch segment punching press
The height of the hole flanging formed afterwards.
Further, the axial length of the second changeover portion is greater than or equal to hole flanging pre-punched hole part through the first punch segment and the
The height of the hole flanging formed after two punch segment punching presses.
According to another aspect of the present invention, a kind of design method of hole extruding formed punch is also provided, for designing above-mentioned change
Thin hole flanging punch, comprising the following steps: according to the outer diameter of the wall thickness of pre-punched hole part and the hole extruding of required processing and turn over
Hole edge thickness determines the end diameter of the first punch segment and third punch segment；It is rushed by distribution hole extruding through the second punch segment
The thinning in pressure hole and thinning through third punch segment punching press hole flanging, determine the end diameter of the second punch segment；According to
The axial length of one changeover portion is greater than or equal to the height for the hole flanging that pre-punched hole part is formed after the first punch segment punching press, passes through
The height for calculating the hole flanging that pre-punched hole part is formed after the first punch segment punching press, determines the axial length of First Transition section；Root
It is greater than or equal to pre-punched hole part according to the axial length of the second changeover portion to be formed after the first punch segment and the second punch segment punching press
Hole flanging height, pass through and calculate the height of hole flanging that pre-punched hole part is formed after the first punch segment and the second punch segment punching press
Degree, determines the axial length of the second changeover portion.
Further, the outer diameter that the end diameter of the first punch segment is equal to the hole extruding of required processing subtracts twice of pre- punching
The wall thickness of hole part；It is thick that the outer diameter that the end diameter of third punch segment is equal to the hole extruding of required processing subtracts twice of hole flanging side
Degree.
Further, it thinning of the distribution hole extruding through the second punch segment punching press hole flanging and is turned over through third punch segment punching press
The thinning in hole, comprising the following steps: distributed and become according to the ironing coefficient during the tension-thining of the material of pre-punched hole part
Thinning of the thin hole flanging through the second punch segment punching press hole flanging and the thinning through third punch segment punching press hole flanging；Second punch segment
End diameter is equal to the end diameter of the first punch segment and turns over twice of hole extruding pre-punched hole part through the second punch segment punching press
The sum of the thinning in hole.
Further, it is determined that the axial length of First Transition section, comprising the following steps:
Calculate the height h1 for the hole flanging that pre-punched hole part is formed after the first punch segment punching press:
Wherein, D0For the neutral line diameter of the hole flanging of formation of the pre-punched hole part after the first punch segment punching press, d0To rush in advance
Bore dia, r are the radius of filleted corner at the fold of the hole extruding of required processing, t0For the wall thickness of pre-punched hole part；First mistake
The axial length for crossing section is greater than or equal to h1。
Further, it is determined that the axial length h of the second changeover portion2, comprising the following steps: the hole extruding processed needed for setting
Fold at the radius of filleted corner be r, the outer diameter of the hole extruding of required processing is D, and pre-punched hole part is rushed through the first punch segment
Hole flanging side after pressure is with a thickness of t, and hole flanging of the hole extruding after the second punch segment punching press is with a thickness of t1, hole extruding pre-punched hole zero
The height for the hole flanging that part is formed after the first punch segment punching press is h1, hole extruding pre-punched hole part is after the second punch segment punching press
The hole flanging height of the hole flanging of formation is h2；
It calculates and justifies at the hole flanging side and fold for the hole flanging that hole extruding pre-punched hole part is formed after the first punch segment punching press
The sum of the volume at angle V1:
It calculates at hole flanging side and the fold for the hole flanging that pre-punched hole part hole extruding is formed after the second punch segment (2) punching press
The sum of volume of fillet V2:
According to V1=V2, the hole flanging that pre-punched hole part is formed after the first punch segment and the second punch segment punching press is calculated
Height h2, the axial length of the second changeover portion is more than or equal to h2。
Further, the axial length of First Transition section is the hole flanging that pre-punched hole part is formed after the first punch segment punching press
1~1.5 times of height；The axial length of second changeover portion is pre-punched hole part through the first punch segment and the second punch segment punching press
1~1.5 times of the height of the hole flanging formed afterwards.
According to another aspect of the present invention, a kind of anti-deforming structure is also provided, for preventing pre-punched hole part in punching press
Hole flanging position shifts in journey, including be installed on hole flanging punching mold tool on connecting plate, be fixedly arranged on connecting plate bushing, with
In centering plate that the inner ring of pre-punched hole part matches and insertion centering plate, bushing and connecting plate and with centering plate is affixed inserts
Pin.
The invention has the following advantages:
Hole extruding formed punch of the invention, successively by the first punch segment of setting, the second punch segment and third punch segment
Hole flanging is formed after the pre- part of punching press, the wall thickness of hole flanging is gradually thinning after Multi-step forming, and the wall thickness after making hole-crimped forming meets
The requirement of hole extruding；Connecting the first punch segment with the second punch segment by First Transition section and pass through the second changeover portion will
Second punch segment is connected with third punch segment, and beginning diameter is all larger than the diameter and second punch segment of First Transition section
End diameter and the starting point diameter of third punch segment are all larger than the diameter of the second changeover portion, and pre-punched hole part is made to complete the first punching
Needed after head section punching press by First Transition Duan Houzai carry out the second punch segment punching press, complete the second punch segment punching press after need through
It crosses after the second changeover portion and carries out the punching press of third punch segment again, since the starting point diameter of the second punch segment is less than or equal to first
The end diameter of punch segment and the starting point diameter of third punch segment are less than or equal to the end diameter of the second punch segment, thus
It avoids becoming larger suddenly due to the diameter of formed punch and damaging property of pre-punched hole part is pullled, influence the molding of hole extruding.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the hole extruding formed punch of the preferred embodiment of the present invention；
Fig. 2 is the structure size schematic diagram of the hole extruding formed punch of the preferred embodiment of the present invention.
Marginal data:
1, the first punch segment；2, First Transition section；3, the second punch segment；4, the second changeover portion；5, third punch segment.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited by following and
The multitude of different ways of covering is implemented.
Fig. 1 is the structural schematic diagram of the hole extruding formed punch of the preferred embodiment of the present invention；Fig. 2 is the preferred embodiment of the present invention
Hole extruding formed punch structure size schematic diagram.
As shown in Figure 1, the hole extruding formed punch of the present embodiment, including being located at the first punch segment 1 of formed punch starting point, being set to
Second punch segment 3 in 1 downstream of the first punch segment, is set the First Transition section 2 between the first punch segment 1 and the second punch segment 3
Third punch segment 5 in 3 downstream of the second punch segment and the second transition between the second punch segment 3 and third punch segment 5
Section 4；The starting point diameter of second punch segment 3 is less than or equal to the end diameter of the first punch segment 1, the end of the second punch segment 3
Diameter is greater than the end diameter of the first punch segment 1, the starting point diameter of the end diameter of the first punch segment 1 and the second punch segment 3
It is all larger than the diameter of First Transition section 2；The end diameter of third punch segment 5 is greater than the end diameter of the second punch segment 3, third punching
The starting point diameter of head section 5 is less than or equal to the end diameter of the second punch segment 3, the end diameter and third of the second punch segment 3
The starting point diameter of punch segment 5 is all larger than the diameter of the second changeover portion 4.First punch segment 1, the second punch segment 3, third punch segment
5 are become larger by starting point terminad diameter.First punch segment 1, the second punch segment 3, third punch segment 5 surface be evagination
Face.The surface of First Transition section 2 and the second changeover portion 4 is concave curved surface.Wherein, the first punch segment 1 carries out wall to pre-punched hole part
Thick constant conventional hole flanging, and the second punch segment 3 and third punch segment 5 are successively to pre-punched hole part through 1 punching press of the first punch segment
The hole flanging formed afterwards carries out hole extruding, and the thickness on hole flanging side is made to meet processing request.Hole extruding formed punch of the invention, passes through
First punch segment 1, the second punch segment 3 and third punch segment 5 are set and successively form hole flanging, the wall thickness of hole flanging after the pre- part of punching press
Gradually thinning after Multi-step forming, the wall thickness after making hole-crimped forming meets the requirement of hole extruding；It will by First Transition section 2
First punch segment 1 and the second punch segment 3 connect and are connected the second punch segment 3 and third punch segment 5 by the second changeover portion 4
It connects, and beginning diameter is all larger than the diameter of First Transition section 2 and the end diameter and third punch segment 5 of the second punch segment 3
Starting point diameter be all larger than the diameter of the second changeover portion 4, needed after so that pre-punched hole part is completed 1 punching press of the first punch segment by the
The punching press of the second punch segment 3 is carried out after one changeover portion 2 again, is needed after the second changeover portion 4 after completing the punching press of the second punch segment 3
The punching press for carrying out third punch segment 5 again, since the starting point diameter of the second punch segment 3 is less than or equal to the end of the first punch segment 1
Hold the starting point diameter of diameter and third punch segment 5 to be less than or equal to the end diameter of the second punch segment 3, thus avoid due to
The diameter of formed punch becomes larger suddenly pulls damaging property of pre-punched hole part, influences the molding of hole extruding.Optionally, thinning
Hole flanging punch further includes set on the 4th punch segment in 5 downstream of third punch segment and for connecting third punch segment 5 and the 4th punching
Third changeover portion between head section.When the wall thickness of pre-punched hole part differs larger with the thickness on the hole flanging side of required processing, the
The thickness that three punch segments 5 complete the hole flanging side of hole flanging formed after punching press is still unable to reach when requiring, by adding third transition
Section and the 4th punch segment, third punch segment 5 make to form after completing punching press by the punching press that third changeover portion carries out the 4th punch segment
The hole flanging side thickness of hole flanging afterwards meets the requirements.Hole extruding after molding is equal with the wall thickness for the components that need to be welded, therefore
It no longer needs to keep hole flanging side thinning other processing methods such as hole flanging progress milling, directly welds hole extruding and components
It connects.
The axial length of First Transition section 2 is turned over more than or equal to what pre-punched hole part was formed after 1 punching press of the first punch segment
The height in hole.First Transition section 2 also progresses into hole flanging while first punch segment 1 enters pre-punched hole part punching, and
Punching press need to be carried out by after First Transition section 2 just the second punch segment 3 can enter in hole flanging, due to the axis of First Transition section 2
Be greater than or equal to the height of hole flanging to length, thus make the first punch segment 1 sufficiently complete to after the punching press of pre-punched hole part again into
The punching press of the second punch segment of row 3.The length of second changeover portion 4 is greater than or equal to pre-punched hole part through the first punch segment 1 and second
The height of the hole flanging formed after 3 punching press of punch segment.Second changeover portion 4 while second punch segment 3 enters pre-punched hole part punching
Also it progresses into hole flanging, and after the second changeover portion 4 third punch segment 5 can just need to enter in hole flanging and be rushed
Pressure completes the second punch segment 3 sufficiently to pre- punching since the length of the second changeover portion 4 is greater than or equal to the height of hole flanging
The punching press of third punch segment 5 is carried out after the punching press of hole part again.Pre-punched hole part sufficiently complete a stage punching press after again
Into the punching press in next stage, make the thinning and hole flanging height on hole flanging side after each stage punching press close to Theoretical Design value,
Improve the precision for the hole extruding that pre-punched hole part is formed after multiple stage punching presses.
As depicted in figs. 1 and 2, the design method of the hole extruding formed punch of the present embodiment, for designing above-mentioned hole extruding
Formed punch, comprising the following steps: thick according to the outer diameter and hole flanging side of the wall thickness of pre-punched hole part and the hole extruding of required processing
Degree, determines the end diameter of the first punch segment 1 and third punch segment 5；It is turned over by distribution hole extruding through 3 punching press of the second punch segment
The thinning in hole and thinning through 5 punching press hole flanging of third punch segment, determine the end diameter of the second punch segment 3；According to first
The axial length of changeover portion 2 is greater than or equal to the height for the hole flanging that pre-punched hole part is formed after 1 punching press of the first punch segment, passes through
The height for calculating the hole flanging that pre-punched hole part is formed after 1 punching press of the first punch segment, determines the axial length of First Transition section 2；
It is greater than or equal to pre-punched hole part after 3 punching press of the first punch segment 1 and the second punch segment according to the axial length of the second changeover portion 4
The height of the hole flanging of formation, the hole flanging formed after 3 punching press of the first punch segment 1 and the second punch segment by calculating pre-punched hole part
Height, determine the axial length of the second changeover portion 4.If the end diameter of the first punch segment 1 is D1, the end of the second punch segment 3
End diameter is D2, and the end diameter of third punch segment 5 is D3.Wherein, first is determined according to the diameter of the pre punching hole of pre-punched hole part
The diameter of 1 starting point of punch segment.The axial length of first punch segment 1 is the punching stroke of the first punch segment 1, therefore reality is rushed in advance
The axial length of the first punch segment of height 1 for the hole flanging that hole part is formed after 1 punching press of the first punch segment is with the first punch segment 1
Axial length is related.The height of the hole flanging formed after 1 punching press of the first punch segment according to designed pre-punched hole part determines first
The axial length of punch segment 1, it is ensured that the height for the hole flanging that pre-punched hole part is formed after 1 punching press of the first punch segment is rushed through second
After 2 punching press of head section the height gain of hole flanging and after 3 punching press of third punch segment the sum of the height gain of hole flanging meet needed for plus
The requirement of the height of the hole extruding of work.The design method of hole extruding formed punch of the invention, first by according to pre-punched hole zero
The outer diameter and hole flanging side thickness of the wall thickness of part and the hole extruding of required processing determine the first punch segment 1 and third punch segment 5
End diameter, further according to thinning distribution determine the second punch segment 3 end diameter, finally according to calculate pre-punched hole part
Hole flanging height after 1 punching press of the first punch segment and the hole flanging height after 3 punching press of the second punch segment determine First Transition section 2
With 4 axial length of the second changeover portion, so that completes hole extruding formed punch is designed to ensure that hole extruding formed punch punching press pre-punched hole
Molding hole extruding meets design requirement after part.
In another embodiment, the downstream of the third punch segment 5 of the hole extruding formed punch of required design is additionally provided with the 4th punching
Head section and for connecting the third changeover portion between third punch segment 5 and the 4th punch segment, comprising the following steps: according to pre- punching
The outer diameter and hole flanging side thickness of the wall thickness of hole part and the hole extruding of required processing determine the first punch segment 1 and the 4th punching
The end diameter of head section；It is rushed by thinning of the distribution hole extruding through 3 punching press hole flanging of the second punch segment, through third punch segment 5
The thinning in pressure hole and thinning through the 4th punch segment punching press hole flanging determine the second punch segment 3 and third punch segment 5
End diameter；By calculating the height for the hole flanging that pre-punched hole part is formed after 1 punching press of the first punch segment, First Transition section is determined
2 axial length；By the height for calculating the hole flanging that pre-punched hole part is formed after 3 punching press of the first punch segment 1 and the second punch segment
Degree, determines the axial length of the second changeover portion 4；By calculate pre-punched hole part through the first punch segment 1, the second punch segment 3 and
The height of the hole flanging formed after 5 punching press of third punch segment, determines the axial length of third changeover portion.
The outer diameter that the end diameter of first punch segment 1 is equal to the hole extruding of required processing subtracts twice of pre-punched hole part
Wall thickness；The outer diameter that the end diameter of third punch segment 5 is equal to the hole extruding of required processing subtracts twice of hole flanging side thickness.Due to
First punch segment 1 carries out plate embryo material hole flanging, therefore the hole flanging side thickness after punching press and pre-punched hole part to pre-punched hole part
Wall thickness is equal.
Distribute thinning of the hole extruding through 3 punching press hole flanging of the second punch segment and the change through 5 punching press hole flanging of third punch segment
Bao Liang, comprising the following steps: distribute pre-punched hole zero according to ironing coefficient of the material of pre-punched hole part during tension-thining
Thinning of the part through 3 punching press hole flanging of the second punch segment and the thinning through 5 punching press hole flanging of third punch segment；Second punch segment 3
End diameter is equal to the change of end diameter and twice of pre-punched hole part through 3 punching press hole flanging of the second punch segment of the first punch segment 1
The sum of thin amount.Hole extruding molding may be regarded as special ironing, and ironing coefficient difference, that is, different materials of different materials exist
Wall thickness is identical different by thinning after identical extruding force, and there are otherwise limit thinning for different wall thickness, therefore need
According to the hole flanging side thickness for the hole flanging that the material of pre-punched hole part and pre-punched hole part are formed after 1 punching press of the first punch segment,
Ensure to distribute pre-punched hole part and is less than limit thinning through the thinning of 3 punching press hole flanging of the second punch segment, it need to be according to pre-punched hole zero
The thickness on the hole flanging side for the hole flanging that part is formed after 3 punching press of the second punch segment, it is ensured that part is after 5 punching press of third punch segment
Thinning be less than limit thinning, while also need guarantee pre-punched hole part after 5 punching press of third punch segment of the second punch segment 3 at
The thickness on the hole flanging side of the hole extruding of type meets processing request.
Determine the axial length of First Transition section 2, comprising the following steps: calculate pre-punched hole part and rush through the first punch segment 1
The height h of the hole flanging formed after pressure1:Wherein, D0It is pre-punched hole part through first
The neutral line diameter of the hole flanging formed after 1 punching press of punch segment, d0For the diameter of the pre punching hole, r is turning over for the hole extruding of required processing
The radius of filleted corner, t at folding0For the wall thickness of pre-punched hole part；The axial length of First Transition section 2 is greater than or equal to h1。
Determine the axial length h of the second changeover portion 42, comprising the following steps: at the fold for the hole extruding processed needed for setting
The radius of filleted corner is r, and the outer diameter of the hole extruding of required processing is D, and pre-punched hole part is formed after 1 punching press of the first punch segment
Hole flanging hole flanging side with a thickness of t, pre-punched hole the part hole flanging formed after 3 punching press of the second punch segment hole flanging side with a thickness of
t1, the height for the hole flanging that pre-punched hole part is formed after 1 punching press of the first punch segment is h1, pre-punched hole part rushes through the second punch segment 3
The height of the hole flanging formed after pressure is h2；
Calculate the volume of fillet at the hole flanging side and fold for the hole flanging that pre-punched hole part is formed after 1 punching press of the first punch segment
The sum of V1:
Calculate the volume of fillet at the hole flanging side and fold for the hole flanging that pre-punched hole part is formed after 3 punching press of the second punch segment
The sum of V2:
According to V1=V2, the hole flanging that pre-punched hole part is formed after 3 punching press of the first punch segment 1 and the second punch segment is calculated
Height h2, the axial length of the second changeover portion 4 is more than or equal to h2。
The axial length of First Transition section 2 is the height for the hole flanging that pre-punched hole part is formed after 1 punching press of the first punch segment
1~1.5 times；The axial length of second changeover portion 4 is pre-punched hole part after 3 punching press of the first punch segment 1 and the second punch segment
1~1.5 times of the height of the hole flanging of formation.Due to the height of the hole flanging formed after 1 punching press of the first punch segment in pre-punched hole part
Spend h1With the height h of the hole flanging formed after 3 punching press of the first punch segment 1 and the second punch segment2Calculating in, fillet at fold
Volume is that i.e. most thin-walled thickness calculates according to the wall thickness of the hole extruding of required processing, therefore h1And h2Value than actual value slightly
Greatly a bit, when the length and h of First Transition section 21When equal, h1And the deviation of actual value is that the length of First Transition section 2 is abundant
Degree, when the length and h of the second changeover portion 42When equal, h2And the deviation of actual value is the length nargin of the second changeover portion 4.The
The length of one changeover portion 2 is 1~1.5 times of the height for the hole flanging that pre-punched hole part is formed after 1 punching press of the first punch segment；Second
The length of changeover portion 4 is the 1 of the height for the hole flanging that pre-punched hole part is formed after 3 punching press of the first punch segment 1 and the second punch segment
~1.5 times, it is ensured that there is enough spaces to complete the punching press of the second punch segment 3 and third punch segment 5, and First Transition section 2 and the
The length nargin of two changeover portions 4 is reasonable, the total length for avoiding length nargin from crossing ambassador's formed punch it is very long and cause processing space and
The waste of formed punch making material, while reducing unnecessary idle stroke in punching course, improve hole extruding it is molding plus
Work efficiency rate.
The anti-deforming structure of the present embodiment, for preventing pre-punched hole part hole flanging position in punching course from shifting,
It is characterised in that it includes being installed on the connecting plate on hole flanging punching mold tool, the bushing being fixedly arranged on connecting plate and pre-punched hole part
The centering plate that matches of inner ring and insertion centering plate, bushing and connecting plate in and the bolt affixed with centering plate.Starting
When carrying out punching press hole flanging on casing, pre-punched hole is located on the conical surface, and tapered portion is fixed in stamping die by when processing to be rushed
During pressure hole, due to the self gravity of punching press stress and casing class part, the position of pre-punched hole is caused to be easy to happen
Offset, the position degree of hole extruding after molding are undesirable.Square distressed structure through the invention is to pre-punched hole part
Inner ring is fixed, and supports part by the connecting plate being fixed on hole flanging punching mold tool and is connect by bolt with connecting plate
Centering plate and the centering of part inner ring limit, so that it is guaranteed that pre-punched hole part is not susceptible to positional shift in punching course, protect
The position degree and precision for demonstrate,proving the hole extruding of pre-punched hole part meet the requirements.
It can be seen from the above description that the above embodiment of the present invention realizes following technical effect:
Hole extruding formed punch of the invention, successively by the first punch segment of setting, the second punch segment and third punch segment
Hole flanging is formed after the pre- part of punching press, the wall thickness of hole flanging is gradually thinning after Multi-step forming, and the wall thickness after making hole-crimped forming meets
The requirement of hole extruding；Connecting the first punch segment with the second punch segment by First Transition section and pass through the second changeover portion will
Second punch segment is connected with third punch segment, and beginning diameter is all larger than the diameter and second punch segment of First Transition section
End diameter and the starting point diameter of third punch segment are all larger than the diameter of the second changeover portion, and pre-punched hole part is made to complete the first punching
Needed after head section punching press by First Transition Duan Houzai carry out the second punch segment punching press, complete the second punch segment punching press after need through
It crosses after the second changeover portion and carries out the punching press of third punch segment again, since the starting point diameter of the second punch segment is less than or equal to first
The end diameter of punch segment and the starting point diameter of third punch segment are less than or equal to the end diameter of the second punch segment, thus
It avoids becoming larger suddenly due to the diameter of formed punch and damaging property of pre-punched hole part is pullled, influence the molding of hole extruding.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of hole extruding formed punch, which is characterized in that
Including being located at the first punch segment (1) of formed punch starting point, set on second punch segment in the first punch segment (1) downstream
(3), between first punch segment (1) and second punch segment (3) First Transition section (2), set on described second
The third punch segment (5) in punch segment (3) downstream and between second punch segment (3) and the third punch segment (5)
The second changeover portion (4)；
The starting point diameter of second punch segment (3) is less than or equal to the end diameter of first punch segment (1), and described the
The end diameter of two punch segments (3) is greater than the end diameter of first punch segment (1), the end of first punch segment (1)
Diameter and the starting point diameter of second punch segment (3) are all larger than the diameter of the First Transition section (2)；
The starting point diameter of the third punch segment (5) is less than or equal to the end diameter of second punch segment (3), and described the
The end diameter of three punch segments (5) is greater than the end diameter of second punch segment (3), the end of second punch segment (3)
Diameter and the starting point diameter of the third punch segment (5) are all larger than the diameter of second changeover portion (4).
2. hole extruding formed punch according to claim 1, which is characterized in that
The axial length of the First Transition section (2) is greater than or equal to pre-punched hole part after the first punch segment (1) punching press
The height of the hole flanging of formation.
3. hole extruding formed punch according to claim 1, which is characterized in that
The axial length of second changeover portion (4) is greater than or equal to pre-punched hole part through first punch segment (1) and described
The height of the hole flanging formed after second punch segment (3) punching press.
4. a kind of design method of hole extruding formed punch, which is characterized in that any described thinning for designing claim 1-3
Hole flanging punch, comprising the following steps:
According to the wall thickness of pre-punched hole part and the outer diameter and hole flanging side thickness of the hole extruding of required processing, described first is determined
The end diameter of punch segment (1) and the third punch segment (5)；
By thinning of the distribution hole extruding through the second punch segment (3) punching press hole flanging and through the third punch segment (5)
The thinning of punching press hole flanging determines the end diameter of second punch segment (3)；
It is greater than or equal to pre-punched hole part according to the axial length of the First Transition section (2) to rush through first punch segment (1)
The height of the hole flanging formed after pressure, by calculating the hole flanging that is formed after the first punch segment (1) punching press of pre-punched hole part
Highly, the axial length of the First Transition section (2) is determined；
According to the axial length of second changeover portion (4) be greater than or equal to pre-punched hole part through first punch segment (1) and
The height of the hole flanging formed after second punch segment (3) punching press, by calculating pre-punched hole part through first punch segment (1)
With the height of the hole flanging formed after the second punch segment (3) punching press, the axial length of second changeover portion (4) is determined.
5. the design method of hole extruding formed punch according to claim 4, which is characterized in that
The outer diameter that the end diameter of first punch segment (1) is equal to the hole extruding of required processing subtracts twice of pre-punched hole part
Wall thickness；
It is thick that the outer diameter that the end diameter of the third punch segment (5) is equal to the hole extruding of required processing subtracts twice of hole flanging side
Degree.
6. the design method of hole extruding formed punch according to claim 4, which is characterized in that described in distribution hole extruding warp
The thinning of the second punch segment (3) punching press hole flanging and thinning through third punch segment (5) the punching press hole flanging, including following step
It is rapid:
According to ironing coefficient distribution hole extruding of the material of pre-punched hole part during tension-thining through second formed punch
The thinning and thinning through third punch segment (5) the punching press hole flanging of section (3) punching press hole flanging；
The end diameter of second punch segment (3) is equal to the end diameter and twice of pre-punched hole of first punch segment (1)
Thinning the sum of of the part through the second punch segment (3) punching press hole flanging.
7. the design method of hole extruding formed punch according to claim 4, which is characterized in that determine the First Transition section
(2) axial length, comprising the following steps:
Calculate the height h for the hole flanging that pre-punched hole part is formed after the first punch segment (1) punching press1:
Wherein, D0For the neutral line diameter of the hole flanging of formation of the pre-punched hole part after the first punch segment (1) punching press, d0For
The diameter of the pre punching hole, r are the radius of filleted corner at the fold of the hole extruding of required processing, t0For the wall thickness of pre-punched hole part；
The axial length of First Transition section (2) is greater than or equal to h1。
8. the design method of hole extruding formed punch according to claim 4, which is characterized in that determine the second changeover portion (4)
Axial length h2, comprising the following steps:
If the radius of filleted corner is r at the fold of the hole extruding of required processing, the outer diameter of the hole extruding of required processing is D,
Hole flanging side of the pre-punched hole part after the first punch segment (1) punching press is with a thickness of t, and hole extruding is after the second punch segment (3) punching press
Hole flanging with a thickness of t1, the height for the hole flanging that pre-punched hole part is formed after the first punch segment (1) punching press is h1, pre-punched hole part
The height of the hole flanging formed after the second punch segment (3) punching press is h2；
Calculate fillet at the hole flanging side of hole flanging and fold that pre-punched hole part is formed after the first punch segment (1) punching press volume it
And V1:
Calculate fillet at the hole flanging side of hole flanging and fold that pre-punched hole part is formed after the second punch segment (2) punching press volume it
And V2:
According to V1=V2, the hole flanging that pre-punched hole part is formed after the first punch segment (1) and the second punch segment (3) punching press is calculated
Height h2, the axial length of the second changeover portion (4) is more than or equal to h2。
9. the design method of hole extruding formed punch according to claim 4, which is characterized in that
The axial length of First Transition section (2) is the height for the hole flanging that pre-punched hole part is formed after the first punch segment (1) punching press
1~1.5 times；
The axial length of second changeover portion (4) is pre-punched hole part shape after the first punch segment (1) and the second punch segment (3) punching press
At 1~1.5 times of height of hole flanging.
10. a kind of anti-deforming structure, for preventing pre-punched hole part hole flanging position in punching course from shifting, feature exists
In including in the connecting plate being installed on hole flanging punching mold tool, the bushing and pre-punched hole part that are fixedly arranged on the connecting plate
It is in the centering plate and the insertion centering plate, the bushing and the connecting plate that ring matches and affixed with the centering plate
Bolt.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811012465.3A CN109127909B (en) | 2018-08-31 | 2018-08-31 | Thinned hole flanging punch and punch design method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811012465.3A CN109127909B (en) | 2018-08-31 | 2018-08-31 | Thinned hole flanging punch and punch design method |
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| CN109127909A true CN109127909A (en) | 2019-01-04 |
| CN109127909B CN109127909B (en) | 2020-05-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111813049A (en) * | 2020-07-31 | 2020-10-23 | 东莞市中泰模具股份有限公司 | Hole flanging female die, manufacturing method thereof, storage medium and CNC (computer numerical control) machine tool |
| CN112427524A (en) * | 2020-11-03 | 2021-03-02 | 贵州航天新力科技有限公司 | Flange flanging internal spinning composite forming method and device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201253664Y (en) * | 2008-09-09 | 2009-06-10 | 河南新科隆电器有限公司 | Hole-expansion punch |
| CN102554021A (en) * | 2010-12-28 | 2012-07-11 | 中国航空工业标准件制造有限责任公司 | Punch for machining irregularly-shaped hole at thread of thin-wall part |
| CN202921751U (en) * | 2012-10-18 | 2013-05-08 | 深圳市捷美奇电子五金有限公司 | Plunger chip structure for mould pre-punching hole |
| JP2014133261A (en) * | 2013-01-11 | 2014-07-24 | F C C:Kk | Molding method of press part, manufacturing method of press part and molding metal mold of press part |
| CN203917582U (en) * | 2014-06-26 | 2014-11-05 | 南京惠德机械有限公司 | A kind of automobile metal plate work cold stamping drift |
| CN204912469U (en) * | 2015-06-06 | 2015-12-30 | 安徽美吉汽车零部件有限公司 | Hole flanging drift punches a hole |
| CN205309115U (en) * | 2016-01-20 | 2016-06-15 | 东莞市铭科精技五金制品有限公司 | Tertiary hole flanging drift |
| CN206276786U (en) * | 2017-04-10 | 2017-06-27 | 重庆双玛科技有限公司 | A kind of multistage drift |
-
2018
- 2018-08-31 CN CN201811012465.3A patent/CN109127909B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201253664Y (en) * | 2008-09-09 | 2009-06-10 | 河南新科隆电器有限公司 | Hole-expansion punch |
| CN102554021A (en) * | 2010-12-28 | 2012-07-11 | 中国航空工业标准件制造有限责任公司 | Punch for machining irregularly-shaped hole at thread of thin-wall part |
| CN202921751U (en) * | 2012-10-18 | 2013-05-08 | 深圳市捷美奇电子五金有限公司 | Plunger chip structure for mould pre-punching hole |
| JP2014133261A (en) * | 2013-01-11 | 2014-07-24 | F C C:Kk | Molding method of press part, manufacturing method of press part and molding metal mold of press part |
| CN203917582U (en) * | 2014-06-26 | 2014-11-05 | 南京惠德机械有限公司 | A kind of automobile metal plate work cold stamping drift |
| CN204912469U (en) * | 2015-06-06 | 2015-12-30 | 安徽美吉汽车零部件有限公司 | Hole flanging drift punches a hole |
| CN205309115U (en) * | 2016-01-20 | 2016-06-15 | 东莞市铭科精技五金制品有限公司 | Tertiary hole flanging drift |
| CN206276786U (en) * | 2017-04-10 | 2017-06-27 | 重庆双玛科技有限公司 | A kind of multistage drift |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111813049A (en) * | 2020-07-31 | 2020-10-23 | 东莞市中泰模具股份有限公司 | Hole flanging female die, manufacturing method thereof, storage medium and CNC (computer numerical control) machine tool |
| CN112427524A (en) * | 2020-11-03 | 2021-03-02 | 贵州航天新力科技有限公司 | Flange flanging internal spinning composite forming method and device |
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| Publication number | Publication date |
|---|---|
| CN109127909B (en) | 2020-05-19 |
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