CN109079021A - Manufacture the mold and punching head of fastener - Google Patents
Manufacture the mold and punching head of fastener Download PDFInfo
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- CN109079021A CN109079021A CN201710444478.7A CN201710444478A CN109079021A CN 109079021 A CN109079021 A CN 109079021A CN 201710444478 A CN201710444478 A CN 201710444478A CN 109079021 A CN109079021 A CN 109079021A
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- formed punch
- mold
- rib
- punching head
- outer rim
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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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
A kind of mold and punching head manufacturing fastener, fastener refers to screwdriver heads, the present invention is to manufacture the stamping die of screwdriver heads, the present invention be directed to the formed punches of the mold, it include: a tapered outer rim, the flank and an inclined-plane of several circular outer rim settings, the setting on the inclined-plane facilitate the removal of flash；The present invention can be used to form various slot, including be in star or quincunx slot；The present invention can make a screwdriver heads it is closer insertion one screw slot, further make the screw stronger and smoothly screw in a workpiece, reduction rock, shake and inclined situation occur.
Description
Technical field
The present invention relates to a kind of mold and punching heads for manufacturing fastener, more particularly to one kind to have quincunx or star for manufacturing
The mold and punching head of the manufacture fastener of shape slot.
Background technique
General manufacture screw or screwdriver can first take out metal wire processed, it will usually metal wire is stretched to certain thickness, then
It is made into screw or screwdriver with a screw head and a bar with a formed punch, then with rolling threading mold shape on bar
At screw thread, and screw head would generally be formed by punching press program, which one slot of punching press, this screw head can form punching press simultaneously
Program is two stage forming process, including the first punching and the second punching, first punching provide a slot anchor point, just
In carrying out the second punching, and the second punching is secondary punching press, can form slot on the head of fastener, if slot is set
Meter is good, and a screwdriver heads safely steadily can be injected and be fitted into slot, so screwdriver heads can be firmly
Rotate the fastener.
The slot shape of general screw can be divided into: linear type, cross, quincunx (Torx-shaped) etc.；So-called plum blossom
Shape refers to a star-like slot at least with hexagonal, it is however generally that, the effect that plum blossom head screw prevents protrusion from deviateing can be better than phenanthrene
The general head screw (cross slotted head) of benefit or manifold screw, the design of Phillips head screw, be in order to allow bottle opener protrusion to deviate from and come,
To prevent tension, and plum blossom head screw is then designed to prevent screwdriver protrusion from deviateing, therefore this limitation screwdriver is turned round
The design of square, torque needed for offer one can be provided, thus can avoid needing to rely on work when reaching certain torque using screwdriver
Tool to skid off screw head, while avoid damage screwdriver heads, screw head, even workpiece risk the problem of, the design of wabbler
The more high torque that can bear than similarly sized hex(agonal)screw head can be applied, without damaged screws head and/or tool.
Known technology shown in Figure 1A is a traditional hexangle type slot 10, and shown in Figure 1B is then a quincunx slot
15, refering to fig. 1 shown in A, justify 12 by one of contact point between six screwdrivers and screw and tool head slot, which represent
Positioned at these put caused by rotary force direction (in order to see more clearly, gap between component is extended a little),
Because contact surface is not perpendicular to this circle 12, a radial force can be generated, which can strut parent part, and squeeze bull, if
This radial force is more than the limit that assembly material can bear, wherein each angle of a component or two components can wear into circle by this radial force
The side of shape or parent part will crack, and the size of this power is and the cotangent at the angle b is directly proportional between the circle 12 and the contact surface,
As shown in Figure 1A and Figure 1B, for a blossom type screw head, it is located at tool and fastener head contact surface and the circumference forward power
Angle, very close 90 degree, therefore under the situation of set torque, be likely to result in the radial force of damage with regard to much smaller.
However, still there are many other defects for quincunx slot, for example, when quincunx screwdriver head is inserted into quincunx slot,
Other groove profiles are compared to, quincunx slot pairing is more not easy, and quincunx slot also needs more stopper point, required precision
It is higher than general cross or linear type slot, more unstable or easy rolling when furthermore precision deficiency can make screwdriver head insert sincere
It is dynamic, in punching plum blossom slot, can also lead to the problem of it is many, it is usually because this is asked caused by stamping Die Design is bad
Topic will further discuss below.
In the quincunx slot of punching press, poorly designed stamping die, the slot after may making punching press generates error, has
The problem of a little slots have the excessive situation that is open, and some slots have side wall surface bending, both of which will cause screwdriver head
Be inserted into screw slot when, might have the situation rocked or loosened, because the industry person can constantly improve it is this be used for fastening
Part and various tool head (such as screwdriver or screwdriver head) form the stamping die of quincunx slot.
United States Patent (USP) US8955417 rotation drive device disclosed applied to tool and workpiece, the device include
One for making the stamping die of quincunx slot, screw or bottle opener have manufacturing tolerance or in screws in fastener head
The difference in gap between the torque receiving plane of bottle opener (tool) and the torque transfer surface of screw slot (workpiece) is driven using this rotation
When dynamic device, this gap will cause the tool by the influence for rotary shaft being in cross force, these cross forces can not only reduce drive
Dynamic speed, also will cause screw when screwing in the workpiece, and inclination deviates the longitudinal axis of the workpiece.
The cylinder of aforementioned rotation drive device is by several round protrusions, and several circles between these protrusions
Groove is formed, the outmost surface of these protrusions, tangentially forms a circle with maximum radius, and those grooves is most interior
Face tangentially forms a circle with least radius, deviates this cylinder, the region between each protrusion forms several circles
The conical surface, these circular conical surfaces are not intended to transmitting torque, but in order to by the tool alignment workpiece.
Referring now still to United States Patent (USP) US8955417, which is to make metal blank in pressure for one metal blank of punching press
Under control condition, it is arranged on formed punch along a set Direction distortion in order to reduce the scratch caused by metal overflow in slot
One flash groove, however, the flash groove reduces the precision of the formed slot of punching press, because die cavity is not filled, at this
In the male model of patent, protrusion is vertical direction, and circular conical surface is for guiding metal stream, and the slope of circular conical surface is quite big, is being rushed
When pressure, vertical protrusion, which does not leave, allows the space of metal overflow, and it is excessive to be supplied to overflow metal because of its slope for circular conical surface
Space, then will form flash at the edge of protrusion, this be because the spatial distribution in die cavity it is uneven caused by, and in order to
Flash is removed, one of secondary operation program is needed, and in the part of circular conical surface, die cavity can not be filled with, therefore not only precision
It can reduce, tool and workpiece may cooperate in which therefore can not be successfully.
In order to solve the disadvantage that it is above-mentioned manufacture stamping die used in quincunx slot on fastener and various tool and exist,
The present invention has the unexistent new advantage of known stamping die.
Summary of the invention
Therefore the main purpose of the present invention is to provide a kind of moulds of two times punch when manufacturing screw or screwdriver
Tool, can make to be formed by quincunx slot in screw head more accurate, while be not required to secondary operation (such as in order to remove flash), should
Mold includes several main ribs and secondary rib, forms a frustum around setting, which forms the head of fastener, and main rib and secondary rib are most
An angle is tilted well, to provide enough spaces, is allowed metal inflow in punching press, is filled up this punching press and form quincunx slot
Surface, and the one side of the formed slot of this punching press is that will not have flash to be formed at slot edge for vertical direction.
The present invention provides a kind of mold and punching head for manufacturing fastener, the mold and formed punch are used to be formed with star slot
Screw head, the mold include a cylinder body and a formed punch, cylinder body have a plane, and formed punch be by the plane extend shape
At integrated molding, formed punch has several flanks, and around its outer rim is set to, each flank includes an at least main rib, and at least one
Adjacent secondary rib；And one inclined-plane be formed in the formed punch and interplanar.
The formed punch is, inclination one angle tapered from a lower section first end towards the second end above one, about between 2 to 3 degree
Between, the diameter of the formed punch first end is greater than the diameter of its second end, and main rib and secondary rib also tilt close or equal angular, tiltedly
The diameter in face is greater than the diameter of formed punch first end, a circular arc width of the main rib and a preferable ratio of circular arc width of the pair rib
It is the most preferably 2:1 between 1.5:1 and 2.5:1；One circular groove is set between the main rib of each flank and secondary rib,
With fillet connection main rib and secondary rib.
The formed punch tapered, and adjacent main rib, groove and secondary rib sequentially connects, and forms more than one rib taper platform；One cone
Head be by the one long-range along stretching of the formed punch, a smooth side be located at the conehead and this it is long-range between.
The present invention also provides can be able to be star-like pattern, the mould in the screw punching press mold of screw head formation slot, the slot
Tool includes a main body for being equipped with a plane；And one formed punch integrally extend from the plane, the formed punch have several flanks,
Around its outer rim is set to, each flank is made of the adjacent secondary rib of an at least main rib and at least one；And formed punch includes one
Has flanged outward tapering tapered portion, which is inwardly tapered from a lower end towards a upper end, and such formed punch is at least a part of
In taper type；And formed punch further includes long-range a, outer rim for the tapering tapered portion of the formed punch with conehead, and is parallel to mold
Between one longitudinal axis of length direction, a range is formed between the angle of 2 to 3 degree；And one inclined-plane be formed in the formed punch and the mold
Flat top surface between；Wherein, which is greater than the diameter of the formed punch outer rim；And a circular arc width of the main rib with
The one preferable ratio of circular arc width of the pair rib is the most preferably 2:1 between 1.5:1 and 2.5:1；And one can form circle
The circular groove at angle is set between the main rib of each flank and secondary rib, to connect the main rib and secondary rib；Wherein, each flank
Main rib, groove and secondary rib can sequentially connect, more than one rib frustum is formed in certain a part of formed punch；An and smooth side shape
At in the conehead and it is long-range between.
The present invention manufactures the mold and punching head of fastener, and also providing can be in the screw of screw head formation slot (such as star slot)
The formed punch that punching press mold extends, the formed punch include several flanks around the setting of its outer rim, and each flank is by least one
Main rib, and at least one adjacent secondary rib are formed, which includes a tapering tapered portion, and an outer rim thereon is from a lower end direction
One upper end is inwardly tapered, so it is in taper type that the formed punch is at least a part of；And the outer rim of the tapering tapered portion of the formed punch,
And be parallel between a longitudinal axis in die length direction, a range is formed between the angle of 2 to 3 degree；And one circular groove set
It is placed between the main rib of each flank and secondary rib, to connect the main rib and secondary rib；Wherein, a circular arc width of the main rib and the pair
The one preferable ratio of circular arc width of rib is the most preferably 2:1 between 1.5:1 and 2.5:1；And the formed punch further includes one
Long-range with conehead and one be located at the conehead and it is long-range between smooth side.
The present invention also provides a kind of fastener that can be rotated or be rotated driving, which includes an outer rim and several ribs
Portion, the outer rim are inwardly tapered from one lower end towards one upper end, and those flanks are to surround to be set in the outer rim, each
Flank includes an at least main rib, and at least one secondary rib, and adjacent to each other, those flanks can form a pattern, such as star；And
The outer rim of the workpiece can be tapered, and and be parallel between a longitudinal axis in die length direction, formed a range between 2 to 3 degree
Angle；And a circular arc width of the main rib and a preferable ratio of circular arc width of the pair rib be between 1.5:1 and 2:5 it
Between, most preferably 2:1；And the workpiece includes one end and a smooth side, which is provided with taper or back taper forming head, and the light
Slide is formed in the taper or back taper forming head；One circular groove is set between the main rib of each flank and secondary rib, with even
Connect the main rib and secondary rib.
Detailed description of the invention
Figure 1A, 1B are respectively the known technology hexagon slot and quincunx slot for being set to a fastener head；
Fig. 2 is the perspective view of inventive die；
Fig. 3 is a part of side isometric view of the invention of inventive die shown in Fig. 2；
Fig. 4 is the formed punch top view of stamping die of the present invention shown in Fig. 2；
Fig. 5 is the side isometric view that stamping die shown in Fig. 2 is stamped into a fastener mold (shown in dotted line)；
Fig. 6 is the final stamping die punching of stamping die presentation process of the invention from the initial cylinder of the leftmost side to the rightmost side
The schematic diagram of head finished product；
Fig. 7 is the perspective view of fastener molding process；
Fig. 8 is perspective view of the present invention by mould punching one fastener head of insertion to form quincunx slot；
Fig. 9 is the upper parallax stereogram of the molding fastener head of the present invention.
In figure shown in symbol:
Label symbol in the prior art:
10 hexangle type slots；12 circles；15 quincunx slots；
Label symbol in the present invention:
1 main body；1a plane；11a, 40 embryo materials；2 formed punches；2a first end；2b second end；2c outer rim；2a',2b',
23 ' diameters；21,221 main rib；22,222 secondary rib；221 grooves；23 inclined-planes；21 ', 22 ' width；3 coneheads；31 is smooth
Side；41 screw heads；42 top surfaces；43 blossom type slots；44e screw thread；44 fasteners；The a longitudinal axis；The b longitudinal axis.
Specific embodiment
In order to more clearly understand the present invention used technology contents, create purpose and reach the effect of, in conjunction with correlation
Detailed description are as follows for schema.
Each component is to clearly show that the principle of the present invention in figure, is not necessarily drawn according to actual ratio, in each view, is had
Reference number is corresponding to represent each component.
Content as described below is highly preferred embodiment of the present invention, its any that variation is generated in function, purpose, structure
He selects or modification is fallen in the scope of the present invention.
As shown in Figures 2 to 3, in a preferred embodiment of the invention, a screw punch pin mold include a main body 1, one
Formed punch 2 and a conehead 3, the main body 1 are a cylindrical body, its top is provided with a plane 1a, the formed punch 2 and 1 one of main body
Molding, while being extended to form by plane 1a, formed punch 2 has several flanks around its periphery.
With reference to figs. 2 to shown in Fig. 4, the quincunx each lobe of slot has a flank, and the flank is main by least one
Rib 21, at least one adjacent secondary rib 22 are formed, and an inclined-plane 23 is located between the formed punch 2 and plane 1a；And the 1 of formed punch 2
One end 2a one second end 2b of axially extending formation, as shown in figure 3, the outer rim 2c (longitudinal axis b line) of formed punch 2, relative to the vertical of mold
2 to 3 degree angle of axis a line inclination, that is to say, that the angle between longitudinal axis a line and longitudinal axis b line is that (longitudinal axis a line is parallel to mould to 2 to 3 degree
Have the longitudinal axis line and longitudinal axis b line is coincided with the inclined outer rim 2c of the formed punch 2), it is, the formed punch 2 is said from first end 2a
Towards second end 2b, it is inwardly tapered 2 to 3 degree angle of inclination.
With reference to figs. 2 to shown in Fig. 4, several main ribs 21 are to surround a frustum and be arranged, its first end of formed punch 2 2a with secondary rib 22
Diameter 2a ' be greater than its second end of formed punch 2 2b diameter 2b ', the tilt angle of the tilt angle of the main rib 21 and secondary rib 22 can be with
It is identical；As shown in figure 3, the diameter 23 ' on inclined-plane 23 is greater than the diameter 2a ' of first end 2a；And the circular arc width of the main rib 21
21 ' and the circular arc width 22 ' of secondary rib 22 be between 1.5:1 and 2.5:1, and optimal proportion is 2:1；And one is arc-shaped
Groove 221 is set between the main rib 21 and secondary rib 22, for connecting the main rib 21 and secondary rib 22, therefore it is the main rib 21, recessed
Slot 221 and secondary rib 22 can be connected sequentially, form more than one rib frustum, and the main rib 21 and secondary rib 22 all tilt 2 to 3 degree towards longitudinal axis a,
To form a frustum；And the conehead 3 is to be extended by the second end 2b of formed punch 2 and formed, the one of polished processing formation is smooth
Side 31 is (shown in Figure 3) between the conehead 3 and second end 2b, that is, the second end 2b of formed punch 2 extends to form the light
Slide 31, the smooth side 31 further extend to form conehead 3.
Referring to figs. 3 to shown in Fig. 8, the second end 2b of the formed punch 2 gradually downward one metal fastenings embryo material 40 of punching press one
Screw head 41, to form a slot in the fastener head.Since the second end 2b diameter of formed punch 2 is less than its first end 2a diameter,
Metal from the metal embryo material 40 being stamped is initially the inclination outer rim 2c outflow along the formed punch 2, and the sky in slot
Gas can successfully be discharged along outer rim 2c, be somebody's turn to do when the first end 2a of the formed punch 2 touches the screw head 41 in punching course
When formed punch 2 arrives at slot bottom, a part of metal embryo material 40 can be pushed up, to fill up the one side on slot top.Therefore
Punching press is formed by slot side and is parallel to longitudinal axis a, herein may shape once the plane 1a of mold touches the top surface 42
At any metal flash the edge of the slot can be pushed back together by plane 1a and inclined-plane 23, therefore the edge can be very smooth, does not have
There is any flash, therefore, the slot as made by punching press can be more accurate, and is not required to add for removing the secondary of flash
Work.
Fig. 6 shows inventive die formed punch forming process, develops from a cylindrical body or embryo material 11a to being provided with a formed punch 2
Main body 1 process；And Fig. 7 shows fastener forming process, from fastener embryo material 40, and polishes and has the tight of screw thread 44e
Firmware 44, there are also 44 heads 41 of fastener for including a top surface 42；And Fig. 8 shows mould punching being inserted into a fastener 44
Head 41, to form quincunx slot.
As shown in fig.9, show the top surface 42 of a fastener screw head 41, the blossom type slot 43 and for manufacturing slot
Formed punch 2, be mirrored into each other, left and right is on the contrary, the blossom type slot 43 has several main ribs 221 and secondary rib 222.
The present invention at least has the advantages that following to be understood by those of ordinary skill in the art:
A. formed punch 2 is from first end 2a towards second end 2b, and tapered and inclined 2 to 3 degree, in punching press embryo material, this is designed
Help that air is discharged, without generating a reaming；
B. being located at the circular groove 221 between main rib 21 and secondary rib 22 can make main rib 21 and secondary rib 22 more significant prominent, because
This apparent can define the two；
C. the ratio of the circular arc width 22 ' of the 21 circular arc width 21 ' of main rib and secondary rib 22 is preferably ranged between 1.5:1 and 2.5:1,
And optimal proportion is 2:1, optimal proportion 2:1 can increase the torsion of screwdriver head；
D. circular groove 221 is a fillet between main rib 21 and secondary rib 22, can not only reduce screwdriver heads
Abrasion, moreover it is possible to extend the service life of screwdriver；
E. from the smooth side 31 that the second end 2b of formed punch 2 extends, the abrasion of formed punch 2 can be reduced, to extend the use of formed punch 2
Service life；
F. it is more aesthetically pleasing and symmetrical can to make the slot of stamped formation for inclined-plane 23, while reducing the formation of flash.
In conclusion only present pre-ferred embodiments, are not used to limit the rights protection model that the present invention is implemented
It encloses, it is all according to equivalent changes and modifications within the scope of the patent application of the present invention, it is all that the invention patent protection scope is covered.
Claims (19)
1. a kind of mold and punching head for manufacturing fastener, the mold and punching head refer to screw stamping die, the mold and punching head is used to
Form the screw head with star slot characterized by comprising
One cylinder-shaped body is provided with a plane;
One formed punch, by the plane one elongation moulding of the cylinder-shaped body;The formed punch has several flanks, the flank ring
In the outer rim for being set to the formed punch;Wherein each flank includes an at least main rib, and at least one secondary rib, adjacent to each other;
Wherein the formed punch is tapered from a first end towards a second end, tilts an angle, the angle is between 2 to 3 degree, institute
The diameter for stating first end is greater than the diameter of the second end;And one inclined-plane be formed between the formed punch and plane;Its
Described in inclined-plane diameter be greater than the formed punch the first end the diameter;The wherein master of each flank
Rib and the secondary rib, all tilt an angle;Wherein in each flank, a width of a circular arc of the main rib with it is described
The ratio of one width of one circular arc of secondary rib is between 1.5:1 and 2.5:1.
2. the mold and punching head of manufacture fastener as described in claim 1, which is characterized in that wherein a circular groove is set to
Between the main rib of each flank and the secondary rib, to connect the main rib and the secondary rib;It is wherein described arc-shaped
Groove has a fillet;Wherein in each flank, the width of the circular arc of the main rib and the secondary rib
The ratio of the width of the circular arc is 2:1.
3. the mold and punching head of manufacture fastener as claimed in claim 2, which is characterized in that the formed punch be in taper type, and
The main rib in each flank, the groove and the secondary rib can be connected sequentially, to form more than one rib frustum.
4. the mold and punching head of manufacture fastener as described in claim 1, which is characterized in that wherein a conehead is from the formed punch
One remotely extends, and a smooth side be set to the conehead and it is described it is long-range between.
5. a kind of mold and punching head for manufacturing fastener, the mold and punching head, which refers to, forms the spiral shell with star-like pattern slot in screw head
The mold and punching head of silk punching press characterized by comprising
One main body has a plane;
One formed punch integrally extends from the plane;The formed punch has several flanks, and the flank is described around being set to
In one outer rim of formed punch;Wherein each flank is made of an at least main rib, and at least one adjacent secondary rib;A wherein circle
Arc groove is set between the main rib of each flank and the secondary rib, to connect the main rib and the secondary rib;
Wherein the formed punch includes a tapering tapered portion, and the tapering tapered portion has an outer rim, from a lower end direction of the outer rim
One upper end of the outer rim is inwardly tapered, and at least a part of formed punch is in taper type;And one be formed in the formed punch and
Inclined-plane between the flat top surface of mold;Wherein the diameter on the inclined-plane is greater than the diameter of the outer rim of the formed punch.
6. the mold and punching head of manufacture fastener as claimed in claim 5, which is characterized in that the formed punch has long-range a, institute
Stating remotely has a conehead.
7. the mold and punching head of manufacture fastener as claimed in claim 5, which is characterized in that the tapering taper of the formed punch
The outer rim in portion, and be parallel between a longitudinal axis in die length direction, form the angle of one 2 to 3 degree.
8. the mold and punching head of manufacture fastener as claimed in claim 5, which is characterized in that the one of a circular arc of the main rib is wide
The ratio of one width of one circular arc of degree and the secondary rib is between 1.5:1 and 2.5:1.
9. the mold and punching head of manufacture fastener as claimed in claim 5, which is characterized in that wherein each flank is described
Main rib, the groove and the secondary rib can be connected sequentially, to form more than one rib frustum, become a part of the formed punch.
10. the mold and punching head of manufacture fastener as claimed in claim 6, which is characterized in that wherein a smooth side is formed at
The conehead and it is described it is long-range between.
11. a kind of mold and punching head for manufacturing fastener, the mold and punching head refers to punching press screw for forming star graph in screw head
The formed punch of the mold of case slot, which is characterized in that the formed punch includes:
Several flanks, around the outer rim for being set to the formed punch, wherein each flank includes an at least main rib, and at least
One adjacent secondary rib;Wherein the formed punch includes a tapering tapered portion, and the tapering tapered portion has an outer rim of the formed punch,
It is inwardly tapered by a lower end towards a upper end, at least a part of formed punch is in taper type;And an inclined-plane, it is formed in
Between the formed punch and the outer rim of the formed punch;Wherein the diameter on the inclined-plane is greater than the straight of the outer rim of the formed punch
Diameter.
12. the mold and punching head of manufacture fastener as claimed in claim 11, which is characterized in that the outer rim of the formed punch,
And be parallel between a longitudinal axis in die length direction, form the angle of one 2 to 3 degree.
13. the mold and punching head of manufacture fastener as claimed in claim 11, which is characterized in that the formed punch includes one arc-shaped
Groove is set between the main rib of each flank and the secondary rib, to connect the main rib and secondary rib;Wherein exist
In each flank, the ratio of a width of a circular arc of a width of a circular arc of the main rib and the secondary rib is 2:1.
14. the mold and punching head of manufacture fastener as claimed in claim 11, which is characterized in that the formed punch is provided with including one
Conehead long-range and one be formed in the conehead and it is described it is long-range between smooth side.
15. a kind of mold and punching head for manufacturing fastener characterized by comprising an outer rim, from a lower end court of the outer rim
It is inwardly tapered to a upper end of the outer rim;And several flanks, it surround and is set to the outer rim;Wherein each flank
Including an at least main rib, and at least one adjacent secondary rib;Wherein in each flank, the one of a circular arc of the main rib is wide
The ratio of one width of one circular arc of degree and the secondary rib is between 1.5:1 and 2.5:1.
16. the mold and punching head of manufacture fastener as claimed in claim 15, which is characterized in that the outer rim and be parallel to fastening
Between the part longitudinal axis, the angle of one 2 to 3 degree is formed.
17. the mold and punching head of manufacture fastener as claimed in claim 15, which is characterized in that described formed punch one end is provided with cone
Shape or back taper forming head；And it is formed in the smooth side in the taper or back taper forming head.
18. the mold and punching head of manufacture fastener as claimed in claim 15, which is characterized in that the formed punch is set to including one
The circular groove of the main rib of each flank and the secondary intercostal, to connect the main rib and the secondary rib.
19. the mold and punching head of manufacture fastener as claimed in claim 15, which is characterized in that several flanks form a star
Shape pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710444478.7A CN109079021A (en) | 2017-06-13 | 2017-06-13 | Manufacture the mold and punching head of fastener |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710444478.7A CN109079021A (en) | 2017-06-13 | 2017-06-13 | Manufacture the mold and punching head of fastener |
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| CN109079021A true CN109079021A (en) | 2018-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710444478.7A Pending CN109079021A (en) | 2017-06-13 | 2017-06-13 | Manufacture the mold and punching head of fastener |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458239A (en) * | 2021-07-15 | 2021-10-01 | 江门市中刀精密科技有限公司 | Plum blossom-shaped punch for processing horizontal RC implant of bone |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3238540A (en) * | 1961-05-26 | 1966-03-08 | Phillips Screw Co | Punch means for forming recesses in fastener heads and driving tools for said fasteners |
| US3972083A (en) * | 1971-10-31 | 1976-08-03 | P.L. Robertson Manufacturing Co. Ltd. | Punch for making recessed screw |
| CN1069322A (en) * | 1991-07-26 | 1993-02-24 | 菲利普螺丝公司 | Have the screw head of inclined ribs and be used for making the drift of this screw head |
| US20070065254A1 (en) * | 2005-09-16 | 2007-03-22 | Nebl David R | Fastener head |
| EP2036633A1 (en) * | 2007-09-14 | 2009-03-18 | Taiwan Shan Yin Int'l Co., Ltd. | Punch and recessed screw formed thereby |
| US20140150613A1 (en) * | 2012-12-05 | 2014-06-05 | Burton Kozak | Torx Head Bit |
-
2017
- 2017-06-13 CN CN201710444478.7A patent/CN109079021A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3238540A (en) * | 1961-05-26 | 1966-03-08 | Phillips Screw Co | Punch means for forming recesses in fastener heads and driving tools for said fasteners |
| US3972083A (en) * | 1971-10-31 | 1976-08-03 | P.L. Robertson Manufacturing Co. Ltd. | Punch for making recessed screw |
| CN1069322A (en) * | 1991-07-26 | 1993-02-24 | 菲利普螺丝公司 | Have the screw head of inclined ribs and be used for making the drift of this screw head |
| US20070065254A1 (en) * | 2005-09-16 | 2007-03-22 | Nebl David R | Fastener head |
| EP2036633A1 (en) * | 2007-09-14 | 2009-03-18 | Taiwan Shan Yin Int'l Co., Ltd. | Punch and recessed screw formed thereby |
| US20140150613A1 (en) * | 2012-12-05 | 2014-06-05 | Burton Kozak | Torx Head Bit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458239A (en) * | 2021-07-15 | 2021-10-01 | 江门市中刀精密科技有限公司 | Plum blossom-shaped punch for processing horizontal RC implant of bone |
| CN113458239B (en) * | 2021-07-15 | 2023-08-08 | 江门市中刀精密科技有限公司 | Quincuncial punch for processing bone level RC implant |
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