CN105408641B - The manufacture method of metallic plate with threaded hole, housing and metallic plate with threaded hole - Google Patents
The manufacture method of metallic plate with threaded hole, housing and metallic plate with threaded hole Download PDFInfo
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- CN105408641B CN105408641B CN201480019744.6A CN201480019744A CN105408641B CN 105408641 B CN105408641 B CN 105408641B CN 201480019744 A CN201480019744 A CN 201480019744A CN 105408641 B CN105408641 B CN 105408641B
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- metallic plate
- wall portions
- outside wall
- threaded hole
- bottom outlet
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- 239000010931 gold Substances 0.000 description 7
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- 238000003825 pressing Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000010079 rubber tapping Methods 0.000 description 5
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Classifications
-
- 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
- B21D53/00—Making other particular articles
- B21D53/24—Making other particular articles nuts or like thread-engaging members
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
- B21D19/10—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws working inwardly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/02—Nuts or like thread-engaging members made of thin sheet material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/12—Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes
- F16B37/122—Threaded inserts, e.g. "rampa bolts"
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Plates (AREA)
- Punching Or Piercing (AREA)
- Finishing Walls (AREA)
- Domestic Plumbing Installations (AREA)
- Door And Window Frames Mounted To Openings (AREA)
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The metallic plate with threaded hole, its screwed hole possess the cylindric outside wall portions that are erected from a face of metallic plate and ora terminalis from the outside wall portions to the cylindric inner wall part turned back on the inside of the outside wall portions, the inner wall part inner peripheral surface formed with internal thread.
Description
Technical field
The present invention relates to the manufacture method of metallic plate with threaded hole, housing and metallic plate with threaded hole.In more detail
For, be related to in the case of even in thin-walled property with the fastening force of screw with external thread also excellent screwed hole and also can
Enough prevent the damaged metallic plate with threaded hole of the screwed hole, the housing for possessing the metallic plate with threaded hole and above-mentioned band spiral shell
The manufacture method of the metallic plate of pit.
The application is based on the Patent 2013-154105 CLAIM OF PRIORITYs proposed on July 25th, 2013 in Japan, by it
Content quotation is so far.
Background technology
The outdoor unit of air-conditioning and the housing of transformer are processed to using by cutting off processing and/or bending machining more
Variously-shaped metallic plate.It is wide in this metallic plate and other metallic plates of composition housing and/or the mounting portion of appurtenances
It is general to be constructed using screw thread, therefore to manufacture screwed hole on a metal plate sometimes.
Figure 11 is the figure for schematically showing screwed hole possessed by conventional metallic plate, and in including screwed hole
Longitudinal section in the case of being observed in the section of mandrel line.The metallic plate 510 with screwed hole shown in this figure, in order to
Make the structure it can be readily appreciated that also showing screw with external thread (male ね じ) 550 with imaginary line and there is through hole 551a another gold
Belong to plate 551.There is metallic plate 510 shown in the figure the cylindric longitudinal wall part 511 for playing screwed hole effect (below, sometimes will
The longitudinal wall part 511 is referred to as screwed hole 511).One end of longitudinal wall part 511 and the main body 513 of metallic plate are mutually continuous, in the longitudinal wall part
511 inner peripheral surface is formed with internal thread 511b.The overlapping of metallic plate 551 with through hole 551a is being installed on the metallic plate
When 510, by the way that screw with external thread 550 is inserted into through hole 551a and is threaded into making its combination in hole 511.The screwed hole
511 can use flange (burring) processing to be formed at metallic plate, because the processing is most easy, therefore use the processing mostly.
Figure 12 A and Figure 12 B are the vertical of one of the manufacturing procedure for schematically showing the screwed hole on conventional metallic plate
Sectional view, Figure 12 A represent punch out step, and Figure 12 B represent flange step in addition.In thread mill drilling 511, first in processing pair
Bottom outlet is got on the metallic plate 520 of elephant.The punching of bottom outlet can be carried out by shearing and/or machining.Passing through
In the case that shearing gets bottom outlet, such as use the drift 531 of punching as illustrated in fig. 12 and the punch die of punching
532.By making drift 531 and punch die 532 close to being thus pressed into a part for metallic plate 520 together with drift 531
In the through hole of punch die 532.As a result, by using being respectively arranged at the knife of drift 531 and punch die 532 by metallic plate 520
A part cuts and is allowed to separate, so as to get bottom outlet.
The metallic plate 520 of bottom outlet is being equipped with, the stretch flange formability by flange processing shaping as longitudinal wall part.Such as Figure 12 B institutes
Show, the drift 533 of flange, the punch die 534 of flange and holding pad (blank holder) are used in flange processing
539.In flange processing, in the state of metallic plate 520 is hold by punch die 534 and holding pad 539, make drift 533 and punching
Mould 534 and holding pad 539 in a manner of to move, by the peripheral part of the bottom outlet of metallic plate 520 together with drift 533
In the recess of ground press-in punch die 534.As a result, the pressing direction of the peripheral part of the bottom outlet of metallic plate 520 to drift 533 is prolonged
Stretch, simultaneously also radially expand, as a result, having shaped the stretch flange formability i.e. longitudinal wall part 511 of cylindrical shape.
It is being configured to by using such as screw tap (not shown) in the inner peripheral surface processing of the longitudinal wall part 511 of such cylindrical shape
Screw thread 511b, thus, it is possible to produce screwed hole 511 on metallic plate 520.
On the screwed hole of metallic plate, as shown in such as patent document 1, various motions were proposed in the past.Patent document 1 carries
The housing gone out, the 2nd sheet metal member in its component parts is formed with screwed hole.The screwed hole of 2nd sheet metal member is flat with the 1st
Plate portion and the 2nd flat part, the 1st flat part and the 2nd flat part are turned back by the ora terminalis of sheet metal member to be formed as right each other
To relative configuration.The screwed hole of 2nd sheet metal member also has：1st cylindrical portion, its from the 1st flat part protrude cylindrical shape and
Inner peripheral surface has screw part；With the 2nd cylindrical portion, it protrudes cylindrical shape from the 2nd flat part and has screw part in inner peripheral surface, with
1st cylindrical portion substantially serial arrangement.It can be said that according to the 2nd sheet metal member, because internal thread is formed at as screw part
The inner peripheral surface of 1 cylindrical portion and the 2nd cylindrical portion, so the axial dimension that can make to contact with screw external screw thread is elongated and ensures to fasten
Torque.
In addition, Patent Document 2 discloses following constructions：By by the 1st thin plate formed with the 1st cylindrical portion and formation
After the 2nd thin plate for having the 2nd cylindrical portion is overlapped so that being coaxially embedded within the 1st cylindrical portion in the 2nd cylindrical portion, from the 2nd thin plate
Side makes tapping screw be screwed together in the inner peripheral surface of the 1st cylindrical portion, the 2nd thin plate is fastened relative to the 1st thin plate.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2011-214802 publications
Patent document 2：Japanese Unexamined Patent Publication 2012-241839 publications
The content of the invention
Problems to be solved by the invention
In the screwed hole of the conventional metallic plate 510 as shown in Figure 11, what is formed by flange processing shaping
The inner peripheral surface of longitudinal wall part (stretch flange formability) 511 is formed with internal thread 511b.In the spiral shell being fabricated as such by flange processing
In pit 511, with the thin-walled property of the light-weighted metallic plate of pursuit for household appliances and/or automobile component etc., with outer spiral shell
The fastening force of line screw reduces.In addition, there is also the ridge of the ridge of screwed hole 511 and screw with external thread 550 because of screw thread
The state for being deformed without engagement in hole 511, the i.e. damaged situation of screwed hole 511.
In addition, propose following structures as screwed hole in above-mentioned patent document 1：With the opposite each other the 1st
Flat part and the 2nd flat part, the cylindrical portion with screw part is set respectively in the 1st flat part and the 2nd flat part.It can be said that
According to the structure, the axial dimension for the internal thread that can make to contact with screw with external thread is elongated and ensures fastening torque.Formed
Needed in the case of the screwed hole：It is equipped with the 1st flat part after bottom outlet and carries out flange processing to set cylindrical portion, and the
2 flat parts carry out flange processing to set cylindrical portion after being equipped with bottom outlet, carry out turning back afterwards so that the 1st flat part and the 2nd flat board
Portion is overlapping, is processed further internal thread.So, processing needs 6 steps, and machining period is significantly increased.In addition, turned back
So that, it is necessary to make the center of 2 cylindrical portions consistent with each other when the 1st flat part is overlapping with the 2nd flat part, it is desirable to high bending essence
Degree.Thus, if processing the screwed hole that patent document 1 is recorded on a metal plate, that processing cost is substantially increased this be present.
Moreover, in above-mentioned patent document 2, if its 0014 section record is " due to making the 1st cylindrical portion to radial direction foreign side
Expand and it is crimped on the 2nd cylindrical portion, thus thin plate each other non-loosening and fixed securely by screwed part ", eliminate the 1st
Clearance between cylindrical portion and the 2nd cylindrical portion, thus seek to prevent the relative position deviation between the 1st thin plate and the 2nd thin plate.
In this configuration, if the size difference of the internal diameter and the external diameter of the 1st cylindrical portion of the 2nd cylindrical portion is larger, it is likely that example
Even if as made the 1st cylindrical portion be expanded to radial direction foreign side, also the 1st cylindrical portion can not be made fully to be crimped on the 2nd cylindrical portion, its
As a result the effect above can not be obtained.Thus, in order to obtain sufficient fastening force, it is poor it is expected to reduce above-mentioned size to a certain extent
(clearance size), the embedded operation that the 1st cylindrical portion is so embedded in the 2nd cylindrical portion becomes difficult, although being also possible to sometimes
It is not fitted together to correctly but is by mistake screwed into tapping screw.In this case, of course can not be thin by the 1st thin plate and the 2nd
Effectively fixed between plate.Moreover, this screwed hole generally not only sets at one but sets many, so can't deny, occur
The probability of such operation error is not low.Therefore, from effectively obtain sufficient fastening force it is such from the viewpoint of, even
The construction of patent document 2 also may not be abundant.
The present invention makes in view of the foregoing, and its object is to provide metallic plate with threaded hole, possess the band
The manufacture method of the housing of the metallic plate of screwed hole and metallic plate with threaded hole, the metallic plate with threaded hole can be reduced
The rising of processing cost and even in thin-walled property in the case of the fastening force of screwed hole and screw with external thread it is still excellent and
It can prevent that screwed hole is damaged.
Technical teaching for solving the problem was
The present inventors are in order to solve the above problems, to being caused due to conventional metallic plate thin-walled property illustrated in fig. 11
The fastening force of screw thread reduce and disrepair phenomenon is analyzed, the reason for obtaining following (a)~(d).
(a) in flange processing, the foundation part of longitudinal wall part 511 occurs with the shaping of cylindric longitudinal wall part 511
Wall thickness is reduced.In addition, so-called " foundation part ", as shown in the part that double dot dash line is irised out in Figure 11, refer to longitudinal wall part 511 with
The consecutive part 511a of main body 513 of metallic plate.
(b) due to by thread groove be worked into wall thickness because the wall thickness of above-mentioned (a) reduces and thinning foundation part, so producing
The very thin position of wall thickness.
(c) elastic deformation occurs for the very thin position of the wall thickness so as to which fastening force reduces.In addition, in screw with external thread 550
Produce plastic deformation at the very thin position of wall thickness when being screwed into and (tighten) operation, there is a situation where screwed hole 511 it is damaged or even
In the situation of fracture.
(d) screw with external thread 550 be screwed into operation and cylindric longitudinal wall part 511 during operation of loosening etc. is to expanding direction
Plastic deformation, the area that the ridge of screwed hole 511 abuts with the ridge of screw with external thread 550 sometimes are reduced.In the situation
Under, there is also the situation that fastening force occurs to reduce or even screwed hole 511 is damaged.
Attentively studied on the basis of these phenomenons, as a result, the present inventors contemplate：By screwed hole be configured to from
The cylindric outside wall portions and the double wall for the cylindric inner wall part turned back from the outside wall portions to inner side that metallic plate erects,
Further internal thread is formed in the inner peripheral surface of inner wall part.Thus, in the case of the thickness of slab of metallic plate is thinned, screwed hole
Breakage that is also excellent with the fastening force of screw with external thread and can also preventing screwed hole.
In addition, the present inventors contemplate：As the another way of screwed hole, even if being configured to erect from metallic plate
Cylindric inner wall part and cylindric outside wall portions this double wall turned back laterally from the inner wall part, further in inwall
The inner peripheral surface in portion forms the structure of internal thread, can also obtain substantially same effect.
The present invention is completed, its summary described below based on above-mentioned cognition.
(1) an embodiment of the invention is related to a kind of metallic plate with threaded hole, is the metallic plate with screwed hole,
Wherein, the screwed hole possesses the cylindric outside wall portions that are erected from a face of the metallic plate and from the end of the outside wall portions
Edge to the cylindric inner wall part turned back on the inside of the outside wall portions, the inner wall part inner peripheral surface formed with internal thread,.
(2) can also, in the metallic plate with threaded hole described in above-mentioned (1), the top of the inner wall part and the gold
Another face for belonging to plate is coplanar.
(3) can also, following structures are used in the metallic plate with threaded hole described in above-mentioned (1)：In screw with external thread
It is not screwed together in the state of the internal thread of the screwed hole, the inner peripheral surface of the outer peripheral face of the inner wall part from the outside wall portions
Separation, in the state of the screw with external thread is screwed together in the internal thread of the screwed hole, the inner wall part it is described outer
At least a portion of side face abuts with the inner peripheral surface of the outside wall portions.
(4) can also, in the case of the metallic plate with threaded hole described in above-mentioned (3), the top of the inner wall part with
Another face of the metallic plate is coplanar.
(5) another embodiment of the present invention is related to a kind of metallic plate with threaded hole, is the metallic plate with screwed hole,
Wherein, the screwed hole possesses the cylindric inner wall part that is erected from a face of the metallic plate and from the end of the inner wall part
Edge to the cylindric outside wall portions turned back on the outside of the inner wall part, the inner wall part inner peripheral surface formed with internal thread.
(6) another embodiment of the invention is related to a kind of housing, possesses the metallic plate with screwed hole, with through hole
Part and screw with external thread, the screw with external thread is screwed into the screwed hole and by the gold to insert the state of the through hole
Category plate is combined with the part with through hole, and the housing is characterised by, the metallic plate is in above-mentioned (1)~(5)
Metallic plate with threaded hole described in any one.
(7) another embodiment of the invention is related to a kind of method, manufactures the band any one of above-mentioned (1)~(4)
The metallic plate of screwed hole, wherein, have：The outside wall portions are shaped on the metallic plate and are connected with the inner side of the outside wall portions
The step of continuous plectane portion；The step of bottom outlet being got at the center in the plectane portion；The plectane portion of the bottom outlet will be equipped with
The step of being bent to the inner side of the outside wall portions and shaping the inner wall part；And in the described interior of the inner wall part formed thereby
Side face processes the step of internal thread.
(8) can also, in the manufacture method of the metallic plate with threaded hole described in above-mentioned (7), at thickness t (mm)
The metallic plate in the step of shaping the outside wall portions and the plectane portion, using with meeting following mathematical expressions (a)
The drift of radius R (mm) shoulder size,
The mathematical expression (a) of 0.5≤R/t≤1.0.
(9) can also, in the manufacture method of the metallic plate with threaded hole described in above-mentioned (7), at thickness t (mm)
The metallic plate in the step of getting the bottom outlet, get under the bottom outlet make it that the radius r (mm) of the bottom outlet meets
Mathematical expression (b) is stated,
The mathematical expression (b) of 0.5≤r/t≤1.2.
(10) can also, in the manufacture method of the metallic plate with threaded hole described in above-mentioned (7), in thickness t
(mm) in the step of outside wall portions and the plectane portion are shaped on the metallic plate, using with meeting following mathematical expressions
(a) drift of radius R (mm) shoulder size, in the step of getting the bottom outlet on the metallic plate, gets the bottom outlet
So that the radius r (mm) of the bottom outlet meets following mathematical expressions (b),
The mathematical expression (a) of 0.5≤R/t≤1.0
The mathematical expression (b) of 0.5≤r/t≤1.2.
(11) another mode of the invention is related to a kind of method, manufactures threaded any one of above-mentioned (1)~(4)
The metallic plate in hole, wherein, methods described has：The punch out step of bottom outlet is got on the metallic plate；It is concentric with the bottom outlet
Ground shapes the step of outside wall portions and plectane portion consecutive with the inner sides of the outside wall portions；By the plectane portion to described outer
The step of inner side of wall portion bends and shapes the inner wall part；And process the interior spiral shell in the inner peripheral surface of the inner wall part
The step of line.
(12) can also, in the manufacture method of the metallic plate with threaded hole described in above-mentioned (11), in thickness t
(mm) in the step of outside wall portions and the plectane portion are shaped on the metallic plate, using with meeting following mathematical expressions
(a) drift of radius R (mm) shoulder size,
The mathematical expression (a) of 0.5≤R/t≤1.0.
(13) can also, in the manufacture method of the metallic plate with threaded hole described in above-mentioned (11), in thickness t
(mm) in the step of getting the bottom outlet on the metallic plate, the bottom outlet is got so that the step of forming the plectane portion
The radius r (mm) of the bottom outlet afterwards meets following mathematical expressions (b),
The mathematical expression (b) of 0.5≤r/t≤1.2.
(14) can also, in the manufacture method of the metallic plate with threaded hole described in above-mentioned (11), in thickness t
(mm) in the step of outside wall portions and the plectane portion are shaped on the metallic plate, using with meeting following mathematical expressions
(a) drift of radius R (mm) shoulder size, in the step of getting the bottom outlet on the metallic plate, gets the bottom outlet
So that the radius r (mm) of the bottom outlet after the step of forming the plectane portion meets following mathematical expressions (b),
The mathematical expression (a) of 0.5≤R/t≤1.0
The mathematical expression (b) of 0.5≤r/t≤1.2.
The effect of invention
The metallic plate with threaded hole of an embodiment of the invention described in above-mentioned (1)~(4), possesses with outer wall
Portion and the double wall construction for the inner wall part turned back from the outside wall portions to inner side.According to the structure, make screw with external thread spiral shell
Together in inner wall part internal thread when, inner wall part receives the pressing force of screw with external thread and will extended to radial outside, but is located
Outside wall portions support around it, so the excessive deformation of inner wall part is restricted.As a result, the breakage of screwed hole can be prevented
With the reduction of the fastening force caused by inner wall part is excessively expanding.
Further for the viewpoint of fastening force, by by inner wall part to turning back to be shaped on the inside of outside wall portions
Sprung back's effect caused by processing, and in the state for the elastic force for constantly applying undergauge direction to inner wall part.Its
As a result, when screw with external thread to be screwed into the internal thread of inner wall part, due to constantly being pressed in internal thread to screw with external thread
The state pressed and be close to, so being able to ensure that the high fastening force for not producing loosening.
For the viewpoint further prevented from breakage, due to not forming in the past existing internal thread in outside wall portions, so energy
Enough prevent the foundation parts of the outside wall portions because female thread into and further thinning thus easy damaged situation.In addition, inside
It is the double wall construction covered by outside wall portions around it, so as to be not easy although formed with internal thread in the foundation part of wall portion
It is damaged.In such manner, it is possible to bending part ensures high intensity at the 2 of screwed hole, so breakage can be prevented.
It is as discussed above, according to the metallic plate with threaded hole of present embodiment, even if its thickness of slab, spiral shell is thinned
The fastening force of pit and screw with external thread is also excellent and can prevent the breakage of screwed hole.
The metallic plate with threaded hole of embodiment according to above-mentioned (5), possess with inner wall part and from the inwall
The double wall construction for the outside wall portions that portion turns back laterally.According to the structure, inner wall part is screwed together in making screw with external thread
During internal thread, inner wall part receives the pressing force of screw with external thread and will extended to radial outside, but is in outer around it
Wall portion supports, so the excessive deformation of inner wall part is restricted.As a result, the breakage of screwed hole can be prevented and due to inner wall part
Excessively it is expanding caused by fastening force reduction.
The housing of embodiment described in above-mentioned (6), due to possessing above-mentioned metallic plate with threaded hole, so screwed hole
Breakage excellent with the fastening force of screw with external thread and that screwed hole can be prevented.Thus, it is possible to prevent be screwed into external screw thread
Screw loosening.
The manufacture method of the metallic plate with threaded hole of embodiment described in above-mentioned (7)~(14), as described above, can
Processing fastening force is excellent on a metal plate and can prevent the screwed hole of breakage.Moreover, machining period and processing can be reduced
The increase of cost.
Brief description of the drawings
Fig. 1 is the figure of the screwed hole for the metallic plate with threaded hole for schematically showing the 1st embodiment of the present invention,
It is the longitudinal section in the case of being observed in the section of the central shaft including screwed hole.
Fig. 2 is the enlarged drawing in Fig. 1 A portions, and is screwed into the figure before tapping screw.
Fig. 3 is the enlarged drawing in Fig. 1 A portions, and the figure after tapping screw is screwed into.
Fig. 4 is the exploded perspective view for the housing for representing the embodiment.
Fig. 5 A are the figures of the manufacture method for the metallic plate with threaded hole for illustrating the embodiment, and represent work flow
In outside wall portions forming step sectional view.
Fig. 5 B are the sectional views for the punch out step for representing the then outside wall portions forming step in the work flow.
Fig. 5 C are the sectional views for the inner wall part forming step for representing the then punch out step in the work flow.
Fig. 5 D are the sectional views for the internal thread forming step for representing the then inner wall part forming step in the work flow.
Fig. 6 A are the figures of the variation of the manufacture method for the metallic plate with threaded hole for illustrating the embodiment, and are represented
The sectional view of punch out step in work flow.
Fig. 6 B are the sectional views of the outside wall portions forming step of the then punch out step in the work flow for represent the variation.
Fig. 6 C are the inner wall part forming steps of the then outside wall portions forming step in the work flow for represent the variation
Sectional view.
Fig. 6 D are the internal thread forming step of the then inner wall part forming step in the work flow for represent the variation
Sectional view.
Fig. 7 is the figure of the screwed hole for the metallic plate with threaded hole for schematically showing the 2nd embodiment of the present invention,
It is the longitudinal section in the case of being observed in the section of the central axis including screwed hole.
Fig. 8 is the figure of the screwed hole for the metallic plate with threaded hole for schematically showing the 3rd embodiment of the present invention,
It is the longitudinal section in the case of being observed in the section of the central axis including screwed hole.
Fig. 9 is the figure of the screwed hole for the metallic plate with threaded hole for schematically showing the 4th embodiment of the present invention,
It is the longitudinal section in the case of being observed in the section of the central axis including screwed hole.
Figure 10 is in the experiment for the fastening force for representing evaluation screwed hole, the externally threaded anglec of rotation of screw and fastening torque
The figure of relation and the relation of the externally threaded anglec of rotation of screw and the change ratio of fastening torque.
Figure 11 is the sectional view for the screwed hole for schematically showing conventional metallic plate with threaded hole.
Figure 12 A are the figures of one of the work flow of the screwed hole of the conventional metallic plate with threaded hole of explanation, Ye Shibiao
Show the sectional view of the punch out step in the work flow.
Figure 12 B are the sectional views for the flange step for representing the then punch out step in the work flow.
Embodiment
Hereinafter, referring to the drawings the metallic plate with threaded hole to the present invention, possess the housing of the metallic plate with threaded hole
And each embodiment of the manufacture method of metallic plate with threaded hole illustrates.In addition, the gold with threaded hole of the present invention
Any one of steel plate and clad steel sheet without coating can be applied to by belonging to plate.
(the 1st embodiment)
Fig. 1 is the figure of the screwed hole for the metallic plate 10 with threaded hole for schematically showing present embodiment, and is wrapping
Include the longitudinal section in the case of being observed in the central axis CL of screwed hole section.In addition, in Fig. 1, in order that structure is easy
In understanding, in addition to metallic plate 10 with threaded hole, also show screw with external thread 50 with imaginary line and there is through hole 51a
Metallic plate 51.
As shown in figure 1, metallic plate 10 (being also referred to as metallic plate 10 sometimes below) institute with threaded hole of present embodiment
The screwed hole 12 having possesses outside wall portions 12a and inner wall part 12b.Outside wall portions 12a, which has from the main body 10a of metallic plate 10, substantially to hang down
The cylindrical shape directly erected.If in other words, cylindric outside wall portions 12a, its foundation part 12a1 as one end of axial direction
Continuous with main body 10a, its center axis CL is vertical with main body 10a surface 10x.Outside wall portions 12a along central axis CL's
The other end 12a2 and inner wall part 12b in direction foundation part 12c are continuous.Inner wall part 12b has and outside wall portions 12a arranged coaxials
Cylindrical shape, be formed as turning back from outside wall portions 12a upper end (other end 12a2) to inner side.Also, inner wall part 12b's
Inner peripheral surface is formed with internal thread 12b1.
The screwed hole 12 of the metallic plate 10 with threaded hole of present embodiment, in the case of thickness of slab t is thinned,
Also the degree of inner wall part 12b foundation part 12c wall thickness reduction can be mitigated, it is possible to increase the fastening force of screwed hole 12 and
The breakage of screwed hole 12 can be prevented.Suppress inner wall part 12b on the metallic plate 10 with threaded hole by present embodiment
Foundation part 12c wall thickness reduce the reasons why, behind will be described.Here, such as the portion irised out in Fig. 1 by single dotted broken line
Shown in point, " inner wall part 12b foundation part 12c " refers to the above-mentioned consecutive parts of other end 12a2 with outside wall portions 12a.
Screwed hole 12 possessed by the metallic plate 10 with threaded hole of present embodiment for possess outside wall portions 12a and pass through by
The double wall construction for the inner wall part 12b that outside wall portions 12a turns back.Thus, operation and pine are screwed into screw with external thread 50
When solving operation, even if inner wall part 12b bears the power of expanding direction due to the pressing from screw with external thread 50, because by outer wall
Portion 12a is supported from surrounding, so can also prevent inner wall part 12b from exceedingly deforming to expanding direction, can prevent from fastening
The reduction of power and the breakage of screwed hole 12.
Screwed hole 12 possessed by the metallic plate 10 with threaded hole of present embodiment, will such as in manufacture method described later
As explanation, the outer peripheral face that inner wall part 12b is configured in bending process contacts with outside wall portions 12a inner peripheral surface, but due to
The effect of sprung back, the inner wall part 12b shaped can be slightly distorted to undergauge direction.Thus, turn into following structures：
In the state of screw with external thread 50 does not screw togather with the internal thread 12b1 of screwed hole 12, inner wall part 12b outer peripheral face is from outside wall portions 12a
Inner peripheral surface separate, in the state of the internal thread 12b1 of screw with external thread 50 and screwed hole 12 is screwed togather, inner wall part 12b periphery
At least a portion in face abuts with outside wall portions 12a inner peripheral surface.On the structure, it is further described using Fig. 2 and Fig. 3.
First, as shown in Fig. 2 in the state of before screw with external thread 50 is threaded into hole 12, due to by curved
Folding processing forms after screwed hole 12 sprung back that occurs, and inner wall part 12b top 12b3 is from outside wall portions 12a foundation portion
12a1 is divided to be slightly separated.Thus, formed between somewhat between inner wall part 12b outer peripheral face and outside wall portions 12a inner peripheral surface
Gap.
Then, as shown in figure 3, in the state of screw with external thread 50 has been screwed into screwed hole 12, screw with external thread is born
The inner wall part 12b of 50 pressing force is corresponding to sprung back's amount and to expanding direction elastic deformation, as a result, inner wall part
12b outer peripheral face abuts with outside wall portions 12a inner peripheral surface to disappear so as to appeal gap.Therefore, as it was previously stated, by outside wall portions 12a
Block and limit inner wall part 12b deformation, in addition, Fig. 2 will also be returned to play inner wall part 12b by sprung back
State recuperability.In the presence of the recuperability, inner wall part 12b is by towards screw with external thread 50 as shown in Fig. 3 arrow X
Force, so being persistently close between internal thread 12b1 and screw with external thread 50.Thus, it is possible to further improve screwed hole 12 with it is outer
Fastening force between threaded screw 50 and prevent the loosening of screw with external thread 50.
As mentioned above, the screwed hole 12 of the metallic plate 10 with threaded hole of present embodiment possesses：From metallic plate 10
The cylindric outside wall portions 12a that vertically erect of a face 10x；With the upper edge from outside wall portions 12a to outside wall portions 12a inner side
The cylindric inner wall part 12b to turn back, inner wall part 12b inner peripheral surface formed with internal thread 12b1.
According to the structure, even if the thickness of slab t of metallic plate 10 with threaded hole is thinned, it can also make screwed hole 12 and external screw thread
The fastening force of screw 50 is excellent and prevents the breakage of screwed hole 12.Moreover, screwed hole 12 is formed by forming
Integrated component, so the time such as welding processing need not be spent, processing cost will not also be significantly increased.
In addition, in the metallic plate 10 with threaded hole of present embodiment, inner wall part 12b top 12b3 and metallic plate
Another face 10y is coplanar.
According to the structure, for example, in above-mentioned another face 10y as mounting surface to the metallic plate 10 with threaded hole
Entire surface require no concave-convex flatness in the case of, can be by concavo-convex degree caused by the formation of screwed hole 12
Min. is prevented, and is able to ensure that internal thread 12b1 length dimension for maximum.Thus, it is possible to obtain having concurrently it is attractive in appearance and
The metallic plate 10 with threaded hole of fastening force.
Then, Fig. 1 and Fig. 4 used below illustrate to the housing of present embodiment.
As shown in figure 4, the housing 70 of present embodiment possesses：Above-mentioned metallic plate 10 with threaded hole；With through hole 51a
Part (metallic plate) 51；And it is threaded into hole 12 and by metallic plate with threaded hole to be inserted into through hole 51a state
The screw with external thread 50 being combined between 10 and part 51.In addition, Fig. 4 is exploded perspective view, and by by screw with external thread 50
Be threaded into hole 12 and in the state of metallic plate 10 with threaded hole and part 51 are engaged, the major part of screwed hole 12
Sectional view, as shown in Figure 1.
According to the housing 70 of present embodiment, because metallic plate 10 with threaded hole possesses above-mentioned construction, so screwed hole
12 is excellent with the fastening force of screw with external thread 50, and can also prevent the breakage of screwed hole 12.In addition, turning into can also prevent
The housing 70 that the screw with external thread 50 being screwed into loosens.In addition, as housing 70, the indoor set and outdoor unit of air-conditioning can be illustrated
Also housing of transformer etc. etc..
In addition, in Fig. 1, the metallic plate with through hole 51a is the top 12b3 that part 51 is installed on inner wall part 12b
Side, but the structure is not limited to, the structure for the foundation part 12c sides that part 51 is installed on to inner wall part 12b can also be used.That is,
In Fig. 1, the configuration relation up and down of metallic plate 10 with threaded hole and part 51 can also be made in turn.In addition, " inner wall part
12b top 12b3 " refers on the direction along central axis CL positioned at the end with above-mentioned foundation part 12c opposite side
Portion.In addition, part 51 is not limited to metallic plate, also include appurtenances with through hole etc..
Then, the manufacture method of the metallic plate 10 with threaded hole of present embodiment is illustrated.In present embodiment
In, punch out step is carried out after outside wall portions forming step, but can also use and outside wall portions shaping is carried out after punch out step
The variation (aftermentioned) of step.
Fig. 5 A~5D are the schematic diagrames of the work flow of the manufacture method for the metallic plate for representing present embodiment, and Fig. 5 A are represented
Outside wall portions forming step, Fig. 5 B represent punch out step, and Fig. 5 C represent inner wall part forming step, and Fig. 5 D represent female thread into step
Suddenly.
First, in outside wall portions forming step, processing object be on metallic plate 20 (blank) shaped exterior wall portion 20a and with
Plectane portion 20b connected outside wall portions 20a.One end and metallic plate on cylindric outside wall portions 20a central axis CL directions
20 main body is mutually continuous, and cylindric outside wall portions 20a erects the table for causing its center axis CL and metallic plate 20 from metallic plate 20
Face is vertical.The inner side of the other end on outside wall portions 20a central axis CL directions and plectane portion 20b phases are continuous.
The outside wall portions 20a and plectane portion 20b of such shape, can be by using the convex shaping of drum or drawing of drift and punch die
Deep processing shapes.In the case of the convex shaping of drum, as shown in Figure 5A, except bulging with drift 35 and bulging punch die 36 with
Outside, also using holding pad 36a.By holding pad 36a and punch die 36 metallic plate 20 is being clamped from the surface of metallic plate 20 and the back side
In the state of, relatively move drift 35 and punch die 36 and holding pad 36a, so as to by a part for metallic plate 20 and drift 35 1
Rise in ground press-in punch die 36.Thus, the outside wall portions 20a and plectane portion 20b of cylindrical shape have been shaped on metallic plate 20.
In punch out step then, in plectane portion, bottom outlet is got at 20b center.I.e., as shown in Figure 5 B, by using beating
Hole carries out the punching completed based on shearing with drift 31 and punching with punch die 32, and thus in plectane portion, 20b gets bottom outlet
20b1.Punching can also the machining by using drill bit and/or the perforation processing using laser cutter carry out.
In inner wall part forming step then, bottom outlet 20b1 plectane portion 20b is equipped with by bending, thus shaping is outside
The inner wall part 12b to be turned back on the inside of wall portion 20a (12a).Plectane portion 20b bending can by so-called reaming process come
Carry out.
That is, in reaming processing, reaming drift 37, reaming punch die 38 and binder as shown in Figure 5 C can be used
Circle 39 is carried out.That is, in the state of the metallic plate 20 is clamped from the surface of metallic plate 20 and the back side by punch die 38 and holding pad 39,
Drift 37 is set to be relatively moved with punch die 38 and holding pad 39.Now so that drift 37 is pressed into bottom outlet 20b1.So, if
The plectane portion 20b of metallic plate 20 is pressed into outside wall portions 20a inner side together with drift 37, then plectane portion 20b is while by punching
First 37 pressing direction stretching is on one side also to radially expanded, as a result, being formed cylindrical and inside from outside wall portions 12a (20a)
The inner wall part 12b (20b) that side is turned back.Now, although being formed as inner wall part 12b outer peripheral face and outside wall portions 12a inner circumferential
Face contacts, but inner wall part 12b is slightly distorted because of sprung back and to undergauge direction, thus can produce it is as shown in Figure 2 between
Gap.
In screw chasing step then, internal thread 12b1 is processed in the inner wall part 12b formed inner peripheral surface.It is right
Internal thread 12b1 processing method is not particularly limited, such as can be as shown in Figure 5 D by screw tap 40 come machining internal thread
12b1.As mentioned above, according to the manufacture method of present embodiment, metallic plate 10 with threaded hole can be obtained, i.e. in gold
The screwed hole for possessing outside wall portions 12a and the inner wall part 12b that an outside wall portions 12a part is turned back is processed on category plate 20
12。
According to the manufacture method of present embodiment, with forming spiral shell using the use flange processing as illustrated by Figure 11
The conventional method of pit is compared, and can mitigate the degree in the foundation part wall thickness reduction of screwed hole.That is, in conventional manufacture
In method, as shown in Figure 12 B, in flange processing in the state of metallic plate 520 is clamped by punch die 534 and holding pad 539, lead to
Cross and the bottom outlet peripheral part of metallic plate 520 is pressed into the recess of punch die 534 together with drift 533 and makes the bottom outlet peripheral part
Deformation, thus shapes longitudinal wall part 511.Now, due to the foundation part 511a on bottom outlet periphery that is deformed in metallic plate 520 with by
The part that punch die 534 and holding pad 539 clamp is neighbouring, so the foundation in longitudinal wall part 511 produces very big tensile stress, its
As a result, wall thickness reduction is promoted.
On the other hand, in the present embodiment, as shown in Figure 5 C in inner wall part forming step by punch die 38 and binder
In the state of the clamping metallic plate 20 of circle 39, plectane portion 20b is pressed into outside wall portions 20a (12a) inner side simultaneously together with drift 37
Plectane portion 20b is deformed, thus shapes inner wall part 12b.Now, in metallic plate 20, circles of the outside wall portions 12a between deformation
Between plate portion 20b and the part being held between punch die 38 and holding pad 39.Thus, the foundation part 12c in inner wall part 12b is made
Caused tensile stress is relaxed, as a result, compared with conventional above-mentioned foundation part 511a (reference picture 11), can be reduced
Foundation part 12c wall thickness decrement.
Therefore, according to the manufacture method of present embodiment, it is possible to increase the screwed hole 12 formed and screw with external thread 50
Fastening force and be also prevented from the breakage of screwed hole 12.Further, since screwed hole 12 is the double of outside wall portions 12a and inner wall part 12b
Layer wall construction, so inner wall part 12b can be prevented to be deformed to expanding direction, can prevent the reduction of the fastening force as caused by deformation
With the breakage of screwed hole 12.It is additionally, since bending plectane portion 20b and forms inner wall part 12b, if so screw with external thread 50 is twisted
Enter screwed hole 12, then recuperability can be produced due to inner wall part 12b sprung back, inner wall part 12b is close to external screw thread
Screw 50.Thus, the fastening force of screwed hole 12 further improves, and can more be prevented securely from be screwed into screw with external thread
50 loosen.
Present embodiment can be shaped by outside wall portions, be punched, inner wall part shaping and female thread are into this 4 step shapes
Into screwed hole 12, so compared with the conventional screwed hole that above-mentioned patent document 1 is proposed, the increasing of machining period can be reduced
Add.In addition, high machining accuracy is not required in above-mentioned 4 steps.Therefore, it is and upper according to the manufacture method of present embodiment
State the screwed hole that patent document 1 is proposed to compare, the rising of processing cost can be reduced.
The manufacture method of the metallic plate with threaded hole of the present invention, as the mode beyond described above, can also be used
Such as the variation shown in Fig. 6 A~6D.
Fig. 6 A represent punch out step, and Fig. 6 B represent outside wall portions forming step, and Fig. 6 C represent inner wall part forming step, Fig. 6 D tables
Show internal thread forming step.In this variation, when forming screwed hole 12, bottom outlet is got in punch out step first.I.e., such as
Shown in Fig. 6 A, punched using punching with drift 31 and punching with punch die 32 by shearing, in the gold of processing object
Bottom outlet 20b1 is got on category plate 20.Punching can also be by using the machining of drill bit and/or beating using laser cutter
Hole machined is carried out.
In outside wall portions forming step then, as shown in Figure 6B, the outside wall portions of cylindrical shape are shaped on metallic plate 20
20a and with the consecutive plectane portion 20b of outside wall portions 20a.One end in cylindric outside wall portions 20a axial direction is foundation part
Mutually continuous with metallic plate 20, cylindric outside wall portions 20a erects from metallic plate 20 causes its center axis CL and metallic plate 20
Surface is vertical.In addition, the outside wall portions 20a inner side along the other end on central axis CL direction is connected with plectane portion 20b
It is continuous.In this variation, such outside wall portions 20a and plectane portion 20b are configured to bottom outlet 20b1 and cylindric outside wall portions 20a
With one heart.
Outside wall portions 20a and plectane portion 20b shaping, can be by using the convex shaping of drum of drift and punch die or drawing process
Come carry out.In the case of the convex shaping of drum, except using the bulging drift 35 and bulging punch die 36 shown in Fig. 6 B, also using
Holding pad 36a.It is consistent with the center of the recess of punch die 36 that metallic plate 20 is configured to its bottom outlet 20b1 center, by punch die 36
Metallic plate 20 is clamped with holding pad 36a.In this condition, drift 35 is made to be relatively moved with punch die 36 and holding pad 36a, by metal
A part for plate 20 is pressed into punch die 36 together with drift 35.Thus, plectane portion 20b and cylindrical shape are shaped on metallic plate 20
Outside wall portions 20a.Now, bottom outlet 20b1 deformation and it is expanding.
In inner wall part forming step then, as shown in Figure 6 C, by bending plectane portion 20b formed thereby, thus into
Shape goes out the inner wall part 12b to be turned back from outside wall portions 12a to inner side.
In internal thread forming step then, as shown in Figure 6 D, internal thread is processed in inner wall part 12b inner peripheral surface
12b1.Plectane portion 20b bending can be carried out with above-mentioned embodiment likewise by reaming processing.In addition, with above-mentioned reality
Apply that mode is same, internal threads 12b1 processing is not particularly limited, such as can be processed by screw tap 40.
By the manufacture method of above-mentioned variation, it can also be formed on metallic plate 20 and possess outside wall portions 12a and inner wall part
12b screwed hole 12.In addition, in this variation, when plectane portion 20b is bent in inner wall part forming step, in metallic plate 20
In, outside wall portions 12a is between the plectane portion 20b of deformation and the part that is clamped by punch die 38 and holding pad 39.Therefore, it is possible to subtract
The degree of light inner wall part 12b foundation part 12c wall thickness reduction, as a result, can improve the fastening force of screwed hole 12 and
The breakage of screwed hole 12 can be prevented.
In addition, in this variation, also same with above-mentioned embodiment, resulting screwed hole 12 is with outside wall portions
12a and inner wall part 12b double wall construction, so inner wall part 12b can be prevented to expanding direction excessive deformation, can prevent by
The reduction of this caused fastening force and the breakage of screwed hole 12.If moreover, screw with external thread 50 is threaded into hole 12, inwall
Portion 12b is close to screw with external thread 50 because of sprung back.Thus, the fastening force of screwed hole 12 further improves, and
It can prevent be screwed into screw with external thread 50 from loosening.
This variation can be shaped by punching, outside wall portions, inner wall part shaping and female thread are made into this 4 steps
Screwed hole 12 is made, so compared with the conventional screwed hole that above-mentioned patent document 1 is proposed, the increasing of machining period can be suppressed
Add.In addition, above-mentioned 4 steps do not require high machining accuracy.Therefore, the spiral shell that this variation is proposed with above-mentioned patent document 1
Pit is compared, and can reduce the rising of processing cost.
This variation can also carry out the step of outside wall portions shaping and inner wall part shaping using identical device, in the situation
The increase of machining period can further be suppressed down.Specifically, in fig. 6b, by with bulging with drift 35 it is relative in a manner of
Reaming shown in configuration diagram 6C (is illustrated and omited) with drift 37.Thereby, it is possible to passing through bulging drift 35 and bulging punch die 36
After having shaped outside wall portions 20a (12a) and plectane portion 20b, at once by reaming with drift 37 come shaping inner wall portion 12b.
The 1st embodiment and its variation for the above-described, in outside wall portions forming step (reference picture 5A, Fig. 6 B)
During shaped exterior wall portion 20a (12a) and plectane portion 20b, it is preferably to which the radius R (mm) using punch die 36 and shoulder meets following mathematical expressions
(1) drift 35.In addition, in punch out step (reference picture 5B, Fig. 6 A), it is preferable that get inner wall part after bottom outlet causes into
The radius r (mm) of the bottom outlet before inner wall part shaping in shape step meets following mathematical expressions (2).In addition, t represents metallic plate 20
Thickness of slab (mm).
The mathematical expression (1) of 0.5≤R/t≤1.0
The mathematical expression (2) of 0.5≤r/t≤1.2
Here, " radius of shoulder " of so-called drift 35 refers to the radius in R portions, the R portions are by with forming in the outer of metallic plate 20
The outer peripheral face for the drift 35 that wall portion 20a (12a) is abutted and it is connected with the top end face of the plectane portion 20b formed thereby drift 35 abutted
(reference picture 5A and Fig. 6 B).In addition, " radius of the bottom outlet before inner wall part shaping in inner wall part forming step " is specifically：
Refer to the bottom outlet 20b1 got by the punch out step shown in Fig. 5 B radius in the above-described embodiment, refer in above-mentioned variation
Bottom outlet 20b1's in the state of having been deformed by from the outside wall portions forming step shown in Fig. 6 B after punch out step to expanding direction
Radius.
If the radius R (mm) of the shoulder of drift 35 is smaller than 0.5 × t (mm) in outside wall portions forming step, drift 35 enters
(Shi い Write body) the R portions (bent portion) that are connected outside wall portions 20a (12a) with plectane portion 20b, sometimes because the wall thickness of the part subtracts
Less or even the phenomenon of fracture and to produce product bad, manufacture qualification rate reduces.On the other hand, if the radius R of the shoulder of drift 35
(mm) than 1.0 × t (mm) more greatly, then the R portions being connected outside wall portions 20a (12a) with plectane portion 20b in inner wall part forming step
(bent portion) will not fully be bent, and outside wall portions 20a (12a) swings to inner wall part 12b sides, and its result is also possible that generation product
It is bad.
In addition, if bottom outlet 20b1 radius r (mm) is smaller than 0.5 × t (mm), plectane is bent in inner wall part forming step
During portion 20b, make the power needed for bottom outlet 20b1 peripheral part deformation excessive.Thus, by outside wall portions 20a (12a) and metallic plate 20
Main body connection R portions (bent portion) can deform, as a result, inner wall part 12b and outside wall portions 20a can not be shaped sometimes
(12a) and to produce product bad, manufacture qualification rate reduces.On the other hand, if the radius r (mm) of bottom outlet than 1.2 × t (mm) more greatly,
Then diminished by inner wall part forming step and the inner wall part 12b shaped height, the quantity of ridge tails off.Therefore, it is possible to
The sufficient fastening force with screw with external thread 50 can not be obtained.
In metallic plate with threaded hole of the invention, possess the housing of the metallic plate and the system of metallic plate with threaded hole
Make in method, the material of metallic plate in itself is not particularly limited.
The manufacture method of the metallic plate with threaded hole of the present invention, it is preferable that in inner wall part forming step using Fig. 5 C and
The drift 37 that tapering is provided with top shown in Fig. 6 C.If the reason is that explanation using being provided with and in conventional art
In straight tube shape as shown in Figure 12 B flange drift 533 compared to external diameter with close to top and the drift in tapering that diminishes
37, then easily promote flexural deformation in the R portions (bending section) for being connected outside wall portions 20a (12a) with plectane portion 20b, can suppress
Outside wall portions 20a (12a's) falls down.
(the 2nd embodiment)
Hereinafter, the 2nd embodiment of the present invention is illustrated using Fig. 7.Explanation when, with above-mentioned 1st embodiment party
Illustrated centered on the difference of formula, other guide is set to identical with above-mentioned 1st embodiment and omitted the description.
Fig. 7 is the figure of the screwed hole 12 for the metallic plate 100 with threaded hole for schematically showing present embodiment, Ye Shi
The longitudinal section suitable with Fig. 3 in the case of being observed in the section of central axis CL including screwed hole 12.
The metallic plate 100 with threaded hole of present embodiment, its inner wall part 12b length dimension L1 are implemented than the above-mentioned 1st
The inner wall part 12b of mode length ruler modest ability.As a result, another the above-mentioned face of inner wall part 12b top 12b3 than metallic plate
10y is protruded.
According to the structure, for example, metallic plate 100 with threaded hole is overlapping with other metallic plates 51 and when being aligned,
As shown in fig. 7, can be by the way that inner wall part 12b ledge be embedded in the through hole 51a of other metallic plates 51, and easily
Aligned.
In addition, internal thread 12b1 length dimension can also be set to the long of the internal thread 12b1 than above-mentioned 1st embodiment
Size length is spent, so can also lengthen the length of the part screwed togather with screw with external thread 50 and more effectively be fastened.
(the 3rd embodiment)
Hereinafter, the 3rd embodiment of the present invention is illustrated using Fig. 8.Explanation when, with above-mentioned 1st embodiment party
Illustrated centered on the difference of formula, other guide is set to identical with above-mentioned 1st embodiment and omitted the description.
Fig. 8 is the figure of the screwed hole 12 for the metallic plate 110 with threaded hole for schematically showing present embodiment, Ye Shi
The longitudinal section suitable with Fig. 3 in the case of being observed in the section of central axis CL including screwed hole 12.
The metallic plate 10 with threaded hole of present embodiment, its inner wall part 12b length dimension L2 is than above-mentioned 1st embodiment party
The inner wall part 12b of formula length dimension is short.As a result, inner wall part 12b top 12b3 be in than metallic plate it is above-mentioned another
Face 10y leans on inner position.Therefore, when being screwed to bottom, gap somewhat can be produced between the surface of other metallic plates 51.
According to the structure, such as by screw with external thread after metallic plate 10 with threaded hole and other metallic plates 51 are overlapped
In the case that 50 are screwed to bottom, inner wall part 12b is shorter than the inner wall part 12b in the case of above-mentioned 1st embodiment, so and external screw thread
The length for the part that screw 50 screws togather shortens.However, due to the gap, so when having tightened screw with external thread 50,
Inner wall part 12b top 12b3 is allowed closer to the head of screw of screw with external thread 50.Also, tightened in screw with external thread 50 same
When, screw with external thread 50 pulls inner wall part 12b towards itself, as a result, cylindric inner wall part 12b wants undergauge.Thus,
Inner wall part 12b is more closely close to screw with external thread 50, it can be ensured that high fastening force.
(the 4th embodiment)
Hereinafter, the 4th embodiment of the present invention is illustrated using Fig. 9.Explanation when, with above-mentioned 1st embodiment party
Illustrated centered on the difference of formula, other guide is set to identical with above-mentioned 1st embodiment and omitted the description.
Fig. 9 is the figure of the screwed hole 212 for the metallic plate 200 with threaded hole for schematically showing present embodiment, and
The longitudinal section suitable with Fig. 3 in the case of being observed in the section of the central axis CL including screwed hole 212.
The metallic plate 200 with threaded hole of present embodiment is the metallic plate for having screwed hole 212, and screwed hole 212 possesses
The cylindric inner wall part 212b's erected from a face of metallic plate 220 the and inside wall portion 212b of ora terminalis from inner wall part 212b
The cylindric outside wall portions 212a that outside is turned back, inner wall part 212b inner peripheral surface formed with internal thread 212b1.
In the structure shown here, it is different from above-mentioned 1st embodiment, although inner wall part 212b sprung back can not be obtained
Effect, but can block the expanding direction of inner wall part 212b when tightening screw with external thread (not shown) by outside wall portions 212a
Deformation.Thus, due to inner wall part 212b excessive deformation can be limited, so even if the thickness of slab of metallic plate 220 is thinned, also can
Enough prevent the breakage of screwed hole 212 and the reduction of fastening force.
In addition, the metallic plate 200 with threaded hole of present embodiment is also used as the inscape of housing.That is, having
In the housing of standby metallic plate, part and screw with external thread, as the metallic plate, above-mentioned gold with threaded hole can be used
Belong to plate 200, the metallic plate has screwed hole, and the part has through hole, and the screw with external thread is to insert the shape of above-mentioned through hole
State is screwed into above-mentioned screwed hole and is combined above-mentioned metallic plate with above-mentioned part.
Embodiment
In order to confirm the present invention effect, by the present invention metallic plate with threaded hole manufacture method on a metal plate
Screwed hole is formed, and has carried out the experiment for the fastening force for evaluating the screwed hole.
As sample, the use of thickness of slab is 0.4~0.6mm and tensile strength be 270MPa grades steel plate.By using figure
The manufacture method of the metallic plate with threaded hole of the 1st embodiment illustrated by 5A~5D has processed JIS on the steel plate
Nominal a diameter of M3 screwed hole in B0205 (2001).
Outside wall portions forming step is carried out by the convex shaping of drum, using the bulging drift 35 that external diameter is 3.2mm, with interior
Footpath is the punch die 36 and holding pad 36a of 4.6mm recess, shapes the outside wall portions 20a that height is 1.4mm.Now, make swollen
Shape is changed with the shoulder radius R of drift 35.In addition, punch out step is added using punching with drift 31 and punching punch die 32 by shearing
Work and carry out, now change bottom outlet 20b1 radius r.Inner wall part forming step uses the reaming drift that top is cone-shaped
37th, reaming is carried out with punch die 38 and holding pad 39.Reaming uses following drifts with drift 37：The radius of vertical tube part is 1.2mm,
The bottom corner in tapering has 60 ° of chamfering relative to central axis CL, and the radius on the top in tapering is 1.4mm.
In order to be compared, by using the work flow illustrated by Figure 12 A and Figure 12 B, also make on a metal plate
Metallic plate 10 (experiment No.1-1A, 2-1A, 3-1A) with threaded hole formed with the screwed hole obtained by conventional flange processing.
In addition, in order to be compared, also make and possessed what Fig. 1 of the patent document 2 quoted in the introduction was recorded
The metallic plate (not shown) (experiment No.1-1B, 2-1B, 3-1B) with threaded hole of construction.If using shown in above-mentioned embodiment 1
Fig. 1 illustrate, the comparative example is following constructions：In the state of screw with external thread 50 has been screwed into, outside wall portions 12a's
The outer peripheral face of inner peripheral surface and inner wall part 12b also separates and produces big gap, not by outside wall portions 12a around inner wall part 12b
Support.
In each experiment, prepare 20 metallic plates respectively and processed screwed hole.Now, bad generation is processed in investigation
Number of packages, calculate manufacture qualification rate.
In addition, for the screwed hole of each metallic plate with threaded hole, carry out being used for the experiment for evaluating fastening force.Evaluating
In the experiment of the fastening force of screwed hole, use can determine the threaded fastening device of fastening torque, and screw with external thread is screwed into
The screwed hole of metallic plate.Now, the externally threaded anglec of rotation of screw and the relation of fastening torque are determined.By according to the anglec of rotation to institute
The obtained externally threaded anglec of rotation (°) of screw and the relation of fastening torque (Nm) carry out differential, thus obtain screw external screw thread
The anglec of rotation (°) and fastening torque change ratio (Nm/ °) relation.
Figure 10 is in the experiment for the fastening force for representing evaluation screwed hole, the externally threaded anglec of rotation of screw and fastening torque
The schematic diagram of relation and the relation of the externally threaded anglec of rotation of screw and the change ratio of fastening torque.As shown in the drawing, if rotation
Angle increases with being screwed into for screw with external thread, then fastening torque turns from substantially 0 (zero) of starting stage and certain state
After being changed into increase, turn into substantially certain again, reduce afterwards.According to such anglec of rotation and the relation of fastening torque, obtain tight
Gu torque is changed into increased point O from for 0 and certain state.
On the other hand, if the anglec of rotation increases with being screwed into for screw with external thread, the change ratio of fastening torque is upper
State after point O starts increase, turn into substantially certain, reduce afterwards.According to the externally threaded anglec of rotation of such screw and fastening torque
Change ratio relation, the change ratio for obtaining fastening torque is changed into the reduced anglec of rotation from certain state.It will represent
Point on the curve of the relation of the anglec of rotation and fastening torque during the anglec of rotation is set to point A.Point A represents internal thread (screwed hole)
Start the point of plastic deformation.
Draw the straight line L that the point O that will so obtain and point A links.In addition, draw straight line L to the increased side of the anglec of rotation
The straight line L ' to obtained from moving in parallel 10 °.By the friendship of straight line L ' and the curve for representing the anglec of rotation and the relation of fastening torque
Point is set to point B.As the index of the fastening force of evaluation screwed hole, point B fastening torque (Nm) and point A fastening torque are calculated
The ratio between TA (Nm) (TB/TA, zero dimension).Such TB/TA represents to maintain fastening torque after internal thread starts plastic deformation
Ratio, in other words represent to maintain the ratio of the fastening force of screwed hole and screw with external thread after internal thread starts plastic deformation.
Therefore, TB/TA is bigger, then the fastening force of screwed hole and screw with external thread is more excellent.
The implication of the mark on " evaluation of fastening force " column in table 1~3 is as follows.
VG(Very Good：It is very good)：Expression meets TB/TA >=1.2.
GD(Good：It is good)：Represent to meet 1.2>TB/TA≥1.0.
FA(Fair：Typically)：Represent to meet 1.0>TB/TA≥0.8.
BD(Bad：It is bad)：Expression meets TB/TA ＜ 0.8.
Experiment No., the thickness of slab t of metallic plate, the processing method of screwed hole, the bulging that table 1~3 respectively illustrates each experiment rush
Head shoulder radius R, R/t value, whether meet above-mentioned mathematical expression (1), inner wall part shaping before bottom outlet radius r, r/t value,
Whether meet above-mentioned mathematical expression (2), manufacture qualification rate, fastening force index TB/TA value and its evaluation, also have test classification.
Here, on meeting situation to above-mentioned mathematical expression (1), represent that R/t value meets above-mentioned mathematical expression (1) in the case of " Y ",
The above-mentioned mathematical expression of R/t value foot with thumb down (1) in the case of " N ".In addition, on meeting feelings to above-mentioned mathematical expression (2)
Condition, represents that r/t value meets above-mentioned mathematical expression (2) in the case of " Y ", represents that r/t value is unsatisfactory in the case of " N "
State mathematical expression (2).
(table 1)
(table 2)
(table 3)
It is in a comparative example BD for the evaluation of fastening force according to table 1~3, is in example of the present invention relative to this
VG, GD or FA.Therefore, it is possible to confirm：The metallic plate with threaded hole of the present invention, the housing and metal for possessing the metallic plate
In the manufacture method of plate, the fastening force of screwed hole and screw with external thread is excellent.
In addition, in comparative example (experiment No.1-1A, 2-1A, 3-1A), the kan gene wall thickness of longitudinal wall part in flange processing
Reduce and rupture and/or can not be sufficiently formed in screw chasing the ridge of screwed hole, trigger product bad, product
Bad generation quantity is thinning with the thickness of slab of sample and increases.As a result, in a comparative example, manufacture qualification rate be 70% with
Under.On the other hand, it is more than 90% in example of the present invention, it is possible to increase manufacture qualification rate.
In addition, in comparative example (experiment No.1-1B, 2-1B, 3-1B), the internal thread machining part suitable with inner wall part by
In not supported by peripheral part suitable with outside wall portions, so rigidity is low, therefore occurs and be difficult to accurate tapping and nothing
Method ensures machining accuracy, the machining accuracy of internal thread this uneven problem in the circumferential.It is if suitable with inner wall part like this
Internal thread machining part rigidity it is weak and the machining accuracy of internal thread is low, then the mated condition between internal thread and external screw thread
(Department り tools close) easily becomes uneven in the circumference of internal thread.
In addition, in example of the present invention in the value of experiment of the R/t value less than 0.5 and R/t has exceeded 1.0 experiment,
Confirm manufacture qualification rate and some reductions be present.On the other hand, in experiment of the r/t value less than 0.5, system has been confirmed
Make qualification rate and some reductions be present.In addition, fastening force is evaluated as VG or GD in r/t value is less than 1.2 experiment, with
This is relative, and in r/t value has exceeded 1.2 experiment, the evaluation of fastening force turns into FA.It follows that by outside wall portions into
The drift for meeting above-mentioned mathematical expression (1) is used in shape step and gets the radius r that bottom outlet causes the bottom outlet before inner wall part shaping
Meet above-mentioned mathematical expression (2), thereby, it is possible to further improve the fastening force of manufacture qualification rate and screwed hole.
Industrial applicability
According to the metallic plate with threaded hole of the present invention, possesses the housing of metallic plate with threaded hole and with threaded hole
Metallic plate manufacture method, even in thin-walled property in the case of, the fastening force of screwed hole and screw with external thread also it is excellent simultaneously
And it can also prevent the breakage of screwed hole.Therefore, if by the metallic plate with threaded hole of the present invention, possessing metal with threaded hole
The manufacture method of the housing of plate and metallic plate with threaded hole is applied to the outdoor unit of air-conditioning and the housing of transformer, then
The thin-walled property of metallic plate can be remarkably contributing to.
Description of reference numerals
10、100、110、200：Metallic plate with threaded hole；10x：One face of metallic plate；10y：Metallic plate another
Face；12：Screwed hole；12a、212a：Outside wall portions；12b、212b：Inner wall part；12b1、212b1：Internal thread；12b3：Inner wall part
Top；20b：Plectane portion；37：Drift；50：Screw with external thread；51：Part；51a：Through hole；70：Housing.
Claims (10)
- A kind of 1. metallic plate with threaded hole, it is characterised in thatThe screwed hole possesses the cylindric outside wall portions that are erected from a face of the metallic plate and from the end of the outside wall portions Edge to the cylindric inner wall part turned back on the inside of the outside wall portions,The inner wall part inner peripheral surface formed with internal thread,The top of the inner wall part and another face of the metallic plate are coplanar,In the state of screw with external thread is not screwed together in the internal thread of the screwed hole, the outer peripheral face of the inner wall part and institute The inner peripheral surface separation of outside wall portions is stated,In the state of the screw with external thread is screwed together in the internal thread of the screwed hole, the periphery of the inner wall part At least a portion in face is connected to the inner peripheral surface of the outside wall portions.
- 2. a kind of housing, possess the metallic plate with screwed hole, part and screw with external thread with through hole, the external screw thread spiral shell Nail is screwed into the screwed hole and by the metallic plate and the part knot with through hole to insert the state of the through hole Closing, the housing is characterised by,The metallic plate is the metallic plate with threaded hole described in claim 1.
- 3. a kind of manufacture method of metallic plate with threaded hole, it is the metallic plate with threaded hole described in manufacturing claims 1 Method, it is characterised in that have：The outside wall portions and plectane portion consecutive with the inner sides of the outside wall portions are shaped on the metallic plate the step of；The step of bottom outlet being got at the center in the plectane portion；The step of plectane portion for being equipped with the bottom outlet is bent to the inner side of the outside wall portions and shapes the inner wall part；With AndThe inner wall part formed thereby the inner peripheral surface process the internal thread the step of.
- 4. the manufacture method of metallic plate with threaded hole according to claim 3, it is characterised in thatIn the step of outside wall portions and the plectane portion are shaped on the thickness t metallic plate, using with satisfaction The drift of the radius R of following mathematical expressions 1 shoulder size, wherein, t and R unit are millimeter,The mathematical expression 1 of 0.5≤R/t≤1.0.
- 5. the manufacture method of metallic plate with threaded hole according to claim 3, it is characterised in thatIn the step of getting the bottom outlet on the thickness t metallic plate, get the bottom outlet and cause the bottom outlet Radius r meets following mathematical expressions 2, wherein, t and r unit are millimeter,The mathematical expression 2 of 0.5≤r/t≤1.2.
- 6. the manufacture method of metallic plate with threaded hole according to claim 3, it is characterised in thatIn the step of outside wall portions and the plectane portion are shaped on the thickness t metallic plate, using with satisfaction The drift of the radius R of following mathematical expressions 1 shoulder size,In the step of getting the bottom outlet on the metallic plate, get under the radius r satisfactions that the bottom outlet causes the bottom outlet Mathematical expression 2 is stated, wherein, t, R and r unit are millimeter,The mathematical expression 1 of 0.5≤R/t≤1.0The mathematical expression 2 of 0.5≤r/t≤1.2.
- 7. a kind of manufacture method of metallic plate with threaded hole, it is the metallic plate with threaded hole described in manufacturing claims 1 Method, it is characterised in that have：The punch out step of bottom outlet is got on the metallic plate；The step of outside wall portions and plectane portion consecutive with the inner sides of the outside wall portions being shaped with one heart with the bottom outlet；The step of plectane portion is bent to the inner side of the outside wall portions and shapes the inner wall part；AndThe inner wall part the inner peripheral surface process the internal thread the step of.
- 8. the manufacture method of metallic plate with threaded hole according to claim 7, it is characterised in thatIn the step of outside wall portions and the plectane portion are shaped on the thickness t metallic plate, using with satisfaction The drift of the radius R of following mathematical expressions 1 shoulder size, t and R unit are millimeter,The mathematical expression 1 of 0.5≤R/t≤1.0.
- 9. the manufacture method of metallic plate with threaded hole according to claim 7, it is characterised in that thickness t's In the step of getting the bottom outlet on the metallic plate, the bottom outlet is got so that described after the step of forming the plectane portion The radius r of bottom outlet meets following mathematical expressions 2, wherein, t and r unit are millimeter,The mathematical expression 2 of 0.5≤r/t≤1.2.
- 10. the manufacture method of metallic plate with threaded hole according to claim 7, it is characterised in thatIn the step of outside wall portions and the plectane portion are shaped on the thickness t metallic plate, using with satisfaction The drift of the radius R of following mathematical expressions 1 shoulder size,In the step of getting the bottom outlet on the metallic plate, the bottom outlet is got so that after the step of forming the plectane portion The radius r of the bottom outlet meet following mathematical expressions 2, wherein, t, R and r unit are millimeter,The mathematical expression 1 of 0.5≤R/t≤1.0The mathematical expression 2 of 0.5≤r/t≤1.2.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-154105 | 2013-07-25 | ||
| JP2013154105 | 2013-07-25 | ||
| PCT/JP2014/069244 WO2015012236A1 (en) | 2013-07-25 | 2014-07-18 | Metal plate with tapped hole, frame, and method for manufacturing metal plate with tapped hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105408641A CN105408641A (en) | 2016-03-16 |
| CN105408641B true CN105408641B (en) | 2018-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480019744.6A Active CN105408641B (en) | 2013-07-25 | 2014-07-18 | The manufacture method of metallic plate with threaded hole, housing and metallic plate with threaded hole |
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| Country | Link |
|---|---|
| JP (1) | JP6137319B2 (en) |
| KR (1) | KR101811931B1 (en) |
| CN (1) | CN105408641B (en) |
| MX (1) | MX2015016278A (en) |
| MY (1) | MY182951A (en) |
| TW (1) | TWI620604B (en) |
| WO (1) | WO2015012236A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6370759B2 (en) * | 2015-10-14 | 2018-08-08 | 株式会社栗山百造 | Manufacturing method of nut with washer |
| DE102016209119B4 (en) * | 2016-05-25 | 2022-05-25 | Schaeffler Technologies AG & Co. KG | Spindle nut, screw drive and method for manufacturing a spindle nut |
| CN109175902A (en) * | 2018-09-21 | 2019-01-11 | 北京长城华冠汽车科技股份有限公司 | The manufacturing process of beam upper installing hole |
| JP7132428B1 (en) * | 2020-10-30 | 2022-09-06 | 東芝三菱電機産業システム株式会社 | Threaded hole processing method |
| KR20240082008A (en) * | 2022-12-01 | 2024-06-10 | 삼성전자주식회사 | Refrigerator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP150683C2 (en) * | 1942-12-20 | |||
| JPS57130013U (en) * | 1981-02-09 | 1982-08-13 | ||
| JP2007016930A (en) * | 2005-07-08 | 2007-01-25 | Tachibana Metal Mfg Co Ltd | Attachment cylindrical body, and manufacturing method of the cylindrical body |
| JP4121943B2 (en) * | 2003-12-26 | 2008-07-23 | 永山電子工業株式会社 | T nut |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6802681B2 (en) * | 2001-11-20 | 2004-10-12 | Itw Limited | Fastening element |
| GB0127734D0 (en) * | 2001-11-20 | 2002-01-09 | Itw Ltd | Fastening Element |
| JP5533151B2 (en) * | 2010-04-02 | 2014-06-25 | ダイキン工業株式会社 | Case and air conditioner equipped with the same |
-
2014
- 2014-07-18 MX MX2015016278A patent/MX2015016278A/en unknown
- 2014-07-18 MY MYPI2015703641A patent/MY182951A/en unknown
- 2014-07-18 JP JP2015528277A patent/JP6137319B2/en active Active
- 2014-07-18 CN CN201480019744.6A patent/CN105408641B/en active Active
- 2014-07-18 KR KR1020157027280A patent/KR101811931B1/en active IP Right Grant
- 2014-07-18 WO PCT/JP2014/069244 patent/WO2015012236A1/en active Application Filing
- 2014-07-22 TW TW103125148A patent/TWI620604B/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP150683C2 (en) * | 1942-12-20 | |||
| JPS57130013U (en) * | 1981-02-09 | 1982-08-13 | ||
| JP4121943B2 (en) * | 2003-12-26 | 2008-07-23 | 永山電子工業株式会社 | T nut |
| JP2007016930A (en) * | 2005-07-08 | 2007-01-25 | Tachibana Metal Mfg Co Ltd | Attachment cylindrical body, and manufacturing method of the cylindrical body |
Also Published As
| Publication number | Publication date |
|---|---|
| MY182951A (en) | 2021-02-05 |
| JP6137319B2 (en) | 2017-05-31 |
| WO2015012236A1 (en) | 2015-01-29 |
| JPWO2015012236A1 (en) | 2017-03-02 |
| CN105408641A (en) | 2016-03-16 |
| KR20150123921A (en) | 2015-11-04 |
| KR101811931B1 (en) | 2017-12-22 |
| TW201515733A (en) | 2015-05-01 |
| TWI620604B (en) | 2018-04-11 |
| MX2015016278A (en) | 2016-03-11 |
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Address after: Tokyo, Japan, Japan Patentee after: Nippon Iron & Steel Corporation Address before: Tokyo, Japan, Japan Patentee before: Nippon Steel Corporation |