CN105322692B - A kind of motor case forming method - Google Patents
A kind of motor case forming method Download PDFInfo
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- CN105322692B CN105322692B CN201510239711.9A CN201510239711A CN105322692B CN 105322692 B CN105322692 B CN 105322692B CN 201510239711 A CN201510239711 A CN 201510239711A CN 105322692 B CN105322692 B CN 105322692B
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- lateral incision
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Abstract
The invention discloses a kind of motor case forming method, material strip is walked in motor case continuous mould, material strip is carried out on each station of continuous mould including the operation of following process successively：(1), material strip cuts out the front side portion with preceding arc-shaped edges edge, rear lateral portion and connect band with rear arc-shaped edges edge on first station；(2) repeatedly load-unload, is carried out to circular flitch, and forms annular sidewall and end plate；(3) centre bore and positioning hole, are punched into end plate；(4), to annular sidewall side blow lateral incision, the upper end open width of lateral incision is less than its lower end width；(5), to annular sidewall top side blow cover plate mounting groove；(6) pole pawl, is punched on end plate；(7) circular arc bending, is carried out to pole pawl；(8), to pole pawl punching press；(9) shaping, is carried out to pole pawl；(10) rotary-cut, is carried out to shell nozzle end；(11) connect band, is cut off.A kind of continuous shaping method for the motor case that the present invention is pole pawl and lateral incision is unlikely to deform, properties of product are higher.
Description
Technical field
The present invention relates to the parts of motor, more particularly, to a kind of motor case and its forming method.
Background technology
The casing of existing motor is punched to be overall, and the punching of the lateral incision of housing and the punching and bending of pole pawl are to pass through
Multiple moulds substep is completed, and the precision of motor case is relatively low, complex process, inefficiency, and the pole pawl of motor case and
The openend of lateral incision is easily deformed, and influences properties of product.
The content of the invention
It is an object of the invention to provide the company of a kind of pole pawl and lateral incision is unlikely to deform, properties of product are higher motor case
Continuous forming method.
To achieve the above object, the present invention is adopted the following technical scheme that：A kind of motor case forming method, motor case bag
The housing that the tubular being set as is enclosed by annular sidewall and an end plate is included, housing tip is to extend above and below openend, annular sidewall, end
Plate is arranged on annular sidewall bottom, and annular sidewall and end plate are integral type structure, and annular sidewall top is provided with lateral incision and is used for
The cover plate mounting groove of cover plate is installed, lateral incision extends downward into the bottom of annular sidewall from annular sidewall top, lateral incision it is upper
End opening is the opening between the side top of lateral incision two, and the upper end open width of lateral incision is equal with its lower end width, is passed through
Lateral incision upper end open and annular sidewall outside wall surface and around casing center axis upper circumference circle be more than pass through lateral incision
Lower end and annular sidewall outside wall surface and the lower circumference circle for surrounding casing center axis；End plate is provided with centre bore, positioning
Hole, pole pawl hole and pole pawl, the pole pawl expect the in-flanges of the bending into housing for the hole in pole pawl hole, and pole pawl hole and pole pawl are surround
The central axis of housing is set uniformly at intervals, and pole pawl is to be bent around casing center axis in circular arc and axially extending circular arc
Plate, material strip is walked in motor case continuous mould, material strip is carried out on each station of continuous mould including such as successively
The operation of lower process：
(1), material strip cuts out the front side portion with preceding arc-shaped edges edge, the rear side with rear arc-shaped edges edge on first station
Portion and connect band, connect band are connected between forward and backward sidepiece, and material strip is punched into when feeding next time on first station
Front side portion it is relative and collectively form a circle flitch with being punched the rear lateral portion that the is formed when previous stage of the front side portion is punched；
(2) repeatedly load-unload, is carried out to circular flitch, and forms annular sidewall and end plate；
(3) centre bore and positioning hole, are punched into end plate；
(4), to annular sidewall side blow lateral incision, now, the upper end open of lateral incision is located at the top end face of annular sidewall, side
The upper end open width of otch is less than its lower end width；
(5), to annular sidewall top side blow cover plate mounting groove；
(6) pole pawl, is punched on end plate, now pole pawl and end plate angle at an acute angle；
(7), pole pawl is carried out to bend around the circular arc of casing center axis；
(8) axially extending, is allowed to pole pawl punching press；
(9) shaping, is carried out to pole pawl；
(10) rotary-cut, is carried out to shell nozzle end；
(11) connect band, is cut off.
It is connected with two connect bands between forward and backward sidepiece altogether in step (1), two connect bands are respectively positioned at material strip
The left and right sides.
In step (2), the circular flitch carries out three drawing altogether.
In step (4), the upper end open width of lateral incision reduces 3% -5% than its lower end width.
A kind of forming method of motor case of the present invention, by continuous mould by motor case punch forming, subtracts
Positioning work is lacked, has improved production efficiency and workpiece accuracy, institute has the advantages that into motor case：Due to lateral incision
The upper shed width of mouth is more than its lower end width, and then can control the deflection of lateral incision upper opening, makes lateral incision top
Openend is unlikely to deform, and after preventing that motor case is molded completely, lateral incision is trapezoidal, causes shell nozzle end to lose circle.Pole pawl is
The in-flanges and pole pawl in pole pawl hole are arc plate, can improve casing processing efficiency and improve the intensity of pole pawl.The hair of pole pawl
Thorn face for its towards annular sidewall lateral surface, and lateral incision burr side be located at annular sidewall outside wall surface on, can carry
The performance of high motor case.
Brief description of the drawings
Fig. 1 is the stereogram of the embodiment of the present invention 1；
Fig. 2 is the structural representation of the embodiment of the present invention 1；
Fig. 3 is that the product of each station when carrying out the production of motor case using continuous mould in the embodiment of the present invention 2 is arranged
Master drawing；
Fig. 4 is the structural representation of the cross section of the drift of blanking die；
Fig. 5 is step（4）The structural representation of middle motor case；
The step of Fig. 6 is embodiment 2（6）The structural representation of middle motor case；
Fig. 7 is the A direction views in Fig. 6；
The step of Fig. 8 is embodiment 2（7）The structural representation of middle motor case；
Fig. 9 is the B direction views in Fig. 8；
The step of Figure 10 is embodiment 2（8）The structural representation of middle motor case；
Figure 11 is the C direction views in Figure 10.
Description of reference numerals：1st, pole pawl hole, 2, pole pawl, 3, annular sidewall, 4, cover plate mounting groove, 5, openend, 6, center
Hole, 7, end plate, 8, central axis, 9, positioning hole, 10, material strip, 11, rear lateral portion, 12, first station, 13, front side portion, 14, circle
Shape flitch, 15, second station, 16, the 3rd station, 17, the 4th station, 18, the 5th station, 19, the 6th work
Position, 20, the 7th station, 21, the 8th station, 22, the 9th station, 23, the tenth station, 24, the 11st station,
25th, the 12nd station, 26, the 13rd station, 27, lateral incision, 28, side blow head, 29, left side outer edge, 30, left side inner edge
Edge, 31, three-arc edge, the 32, first arc-shaped edges edge, 33, middle drift, the 34, the 5th arc-shaped edges edge, 35, right side outer edge,
36th, right side inside edge, the 37, the 6th arc-shaped edges edge, the 38, second arc-shaped edges edge, the 39, the 4th arc-shaped edges edge, 40, burr side, 41, on
Circumference, 42, lower circumference, 43, lateral surface.
Embodiment
Embodiment 1：
The tubular being set as is enclosed as a kind of motor case shown in Fig. 1-Fig. 2, including by annular sidewall 3 and an end plate 7
Housing, annular sidewall extends about 3, and end plate 7 is arranged on the bottom of annular sidewall 3, and housing tip is openend 5, i.e. annular sidewall 3
Top opening end be housing openend 5, the top end face of annular sidewall 3 is the top end face of housing.Annular sidewall 3 and end plate 7 are one
Body formula structure.
The top of annular sidewall 3 is provided with lateral incision 27 and the cover plate mounting groove 4 for installing cover plate, lateral incision 27 and cover plate peace
Tankage 4 is radially penetrating setting, and upwards, lateral incision 27 is extended downwardly the notch of cover plate mounting groove 4 from the top of annular sidewall 3
To the bottom of annular sidewall 3, lateral incision 27 extends to be lower vertically, and the lower end of lateral incision 27 is located at the bottom of annular sidewall 3
Upside, cover plate mounting groove 4 is arranged at intervals several around casing center axis 8, and the both sides of lateral incision 27 are equipped with the cover plate
Mounting groove 4, the two cover plate mounting grooves 4 adjacent with its both sides of lateral incision 27 are connected, and cover plate mounting groove 4 is prior art, therefore not
Narration in detail.The upper end open width L of lateral incision 27 is equal with its lower end width M, and lateral incision 27 sets for equal in width from top to bottom
Put, the side of two axial directions of lateral incision 27 is set to be spaced and parallel, and the upper end open of lateral incision 27 is the both sides of lateral incision 27
Opening between the top of side, the upper end open width L of lateral incision 27 refers to the width distance between two side tops of lateral incision 27,
The lower ending opening M of lateral incision 27 refers to the width distance between two side bottoms of lateral incision 27, when the both sides of lateral incision 27 are connected
When having cover plate mounting groove 4, as shown in Fig. 1 in embodiment 1, the upper end open width L of lateral incision 27 refers to and the both sides of lateral incision 27
Between two joining places that two bottom lands of two cover plate mounting grooves 4 being connected are formed between two side tops of lateral incision 27 respectively
Width distance.Certainly, the present invention is not limited to above-mentioned form, and the both sides of lateral incision 27 can not also connect cover plate mounting groove 4, work as lateral incision
When 27 both sides of mouth do not connect cover plate mounting groove 4, the upper end open of lateral incision 27 is located on the top end face of annular sidewall 3, lateral incision
Two side tops of mouth 27 all extend to the top end face of annular sidewall 3, and now the upper end open width of lateral incision 27, which refers to, extends
Width distance to two side tops of the lateral incision 27 of the top end face of annular sidewall 3.
By the upper end open of lateral incision 27 and the outside wall surface of annular sidewall 3 and around the upper circumference 41 of casing center axis 8
Girth is more than by the lower end of lateral incision 27 and the outside wall surface of annular sidewall 3 and around the girth of lower circumference 42 of casing center axis 8,
The center of circle of upper circumference 41 and lower circumference 42 is respectively positioned on casing center axis 8, and the upper girth of circumference 41 is longer by 3% than the lower girth of circumference 42,
Certainly, the present invention is not limited to above-mentioned form, and the upper girth of circumference 41 is also than the lower girth length 5% of circumference 42, or upper circumference 41 weeks
Length is than between the long 3%-5% of the lower girth of circumference 42, so, annular sidewall 3 is in the up big and down small round platform ring close to annular
Shape side wall.
The burr side 40 that lateral incision 27 is formed when by mould molding is located in the outside wall surface of annular sidewall 3, i.e. side
Otch 27 is when side blow is molded, and lateral incision 27 is to be rushed from housing to hull outside, and the burr side 40 is located at lateral incision 27 and ring
On the edge of the outside wall surface linking of shape side wall 3, the use function of motor case can be so improved.
The end plate 7 is provided with centre bore 6, positioning hole 9, pole pawl hole 1 and pole pawl 2, and positioning hole 9 sets two altogether, and two determine
Position hole 9 is located at the both sides of centre bore 6 respectively.
The pole pawl 2 expects the in-flanges along inside edge bending into housing in pole pawl hole 1, pole pawl hole 1 for the hole in pole pawl hole 1
It is to be set uniformly at intervals around the central axis 8 of housing with pole pawl 2, all pole pawls 2 are respectively positioned on same circumference, pole pawl 2
To be bent around casing center axis 8 in circular arc and axially extending arc plate, and pole pawl 2 is lower upper small trapezoidal greatly
Shape, pole pawl 2 is with pole pawl hole 1 to correspond, and pole pawl 2 sets 8 altogether, and pole pawl hole 1 is also 8, and certainly, the present invention is not limited to
Above-mentioned form, pole pawl 2 and pole pawl hole 1 can also be respectively provided with 6.The burr face that pole pawl 2 is formed when by mould molding is pole
The lateral surface 43 towards annular sidewall 3 of pawl 2, i.e. pole pawl 2, in punching molding, is to be punched from hull outside into housing, this
Sample can improve the performance of motor case.Pole pawl hole 1 can as motor case heat emission hole.
Embodiment 2：
Fig. 3-Figure 11 is a kind of forming method of motor case described in embodiment 1, and material strip 10 is walked in into motor case connects
In continuous mould, material strip 10 be before and after extension and material strip 10 to feed from back to front, material strip 10 successively continuous mould each
Material strip 10 is carried out on station to include the operation of following process：
（1）, material strip 10 cut out the front side portion 13 with preceding arc-shaped edges edge on first station 12 wherein, with rear circular arc
The material strip clout of the rear lateral portion 11 and connect band at edge, rear lateral portion 11 and rear side, which is thrown away, to be connected as a single entity, and preceding arc-shaped edges edge is with after
Arc-shaped edges edge is dorsad sets, and preceding arc-shaped edges edge and rear arc-shaped edges may make up a full-circle spray pattern, connect band along with respect to when connecing
It is connected between forward and backward sidepiece 13,11, two connect bands, two connect bands is connected with altogether between adjacent forward and backward sidepiece 13,11
It is located at the left and right sides of material strip 10 respectively and is symmetrical arranged, connect band is the band that is flexible coupling.Material strip 10 is when feeding next time the
The front side portion 13 being punched on one station 12 is with being punched the rear lateral portion 11 formed when the previous stage of the front side portion is punched relatively simultaneously
Collectively form a circular flitch 14.
Continuous mould first station 12 of correspondence is provided with blanking die, as shown in figure 4, the blanking die has three punchings
Head：Positioned at middle middle drift 33 and respectively positioned at two side blows first 28 of the middle left and right side of drift 33, middle drift 33
Front and rear sides edge be respectively the first arc-shaped edges along 32 and second arc-shaped edges along 38, the edge of arranged on left and right sides is respectively a left side
Side inside edge 30 and right side inside edge 36；Side blow first 28 correspondence left side inside edge 30 in left side is provided with left side outer edge 29, left side side
Drift 28 is respectively equipped with the arc-shaped edges of three-arc edge 31 and the 4th along 39 in the forward and backward side of left side outer edge 29；Right side side blow
First 28 correspondence right side inside edge 36 is provided with right side outer edge 35, and right side side blow first 28 is distinguished in the forward and backward side of right side outer edge 35
Provided with the 5th arc-shaped edges along 34 and the 6th arc-shaped edges along 37；Left side inside edge 30 and left side outer edge 29 are interval relative set,
Right side inside edge 36 and right side outer edge 35 is are spaced relative set, and blanking die is provided with the cavity plate being adapted with its drift, fallen
When expecting mold work, left side inside edge 30 and the collective effect of left side outer edge 29 can be punched into the connect band in left side, right side inner edge
The connect band on right side can be punched into along 36 and the collective effect of right side outer edge 35, three-arc edge 31, the first arc-shaped edges are along 32
The preceding arc-shaped edges edge of front side portion 13 can be punched into along 34, the 4th arc-shaped edges are along the 39, second arc-shaped edges along 38 and with the 5th arc-shaped edges
6th arc-shaped edges can be punched into the rear arc-shaped edges edge of rear lateral portion 11 along 37.
（2）, on three stations to circular flitch 14 carry out three drawing, i.e., drawn for the first time on second station 15
Stretch, succeeding stretch is carried out on the 3rd station 16, three stretchings are carried out on the 4th station 17, when three stretchings are completed
Afterwards, annular sidewall 3 and end plate 7 are formed, now, annular sidewall 3 is annular side wall.
（3）, on the 5th station 18 centre bore 6 and two positioning holes 9 are punched into end plate 7.
（4）, on the 6th station 19 to the side blow lateral incision 27 of annular sidewall 3, lateral incision 27 is to housing from housing
Outer side blow, now, as shown in figure 5, lateral incision 27 extends downward into the bottom of annular sidewall 3, side from the top end face of annular sidewall 3
Two sides of otch 27 are oblique line extension, and the top inclination of two sides is opposite, two side bottoms are expanded outwardly, lateral incision
The upper end open of mouth 27 is the opening between the side top of lateral incision two, and the upper end open of lateral incision 27 is located at annular sidewall 3
The upper end open width L1 of top end face, now lateral incision 27（Upper end open width is the width distance between two side tops）It is small
In its lower end width M（Lower end width is the width distance between two side bottoms）, and the upper end open width of lateral incision 27
L1 reduces 3% than its lower end width M, and certainly, the present invention is not limited to above-mentioned form, the upper end open width L1 ratios of lateral incision 27
Its lower end width M reduce 5%, or lateral incision 27 upper end open width L1 than its lower end width M reduction 3%-5% between.
（5）, on the 7th station 20 to the top side blow cover plate mounting groove 4 of annular sidewall 3, around casing center axis 8
The several cover plate mounting grooves 4 of side blow are spaced, and in the both sides of lateral incision 27 also equal side blow cover plate mounting groove 4, make lateral incision 27 and its
Two adjacent cover plate mounting grooves 4 of both sides are connected, and the upper end open of lateral incision 27 is opening between the top of 27 liang of sides of lateral incision
Mouthful, so now, the upper end open of lateral incision 27 is two bottom lands point for two cover plate mounting grooves 4 being connected with the both sides of lateral incision 27
Opening between two joining places not formed between two side tops of lateral incision 27, the upper end open width L of lateral incision 27
Refer to two bottom lands of two cover plate mounting grooves 4 being connected with the both sides of lateral incision 27 shape between two side tops of lateral incision 27 respectively
Into two joining places between width distance.
（6）, eight pole pawls 2 and eight pole pawl hole 1 are punched on end plate 7 on the 8th station 21, such as Fig. 6 and Fig. 7
It is shown, now pole pawl 2 and the angle at an acute angle of end plate 7.Pole pawl 2 is to be punched from hull outside into housing.
（7）, on the 9th station 22 pole pawl 2 is carried out bending around the circular arc of casing center axis 8, now motor
Casing is as shown in Figure 8 and Figure 9.
（8）, on the tenth station 23 axially extending is allowed to the punching press of pole pawl 2, now motor case such as Figure 10 and Figure 11
It is shown.
（9）, on the 11st station 24 to pole pawl 2 carry out shaping.
（10）, on the 12nd station 25 to shell nozzle end 5 carry out rotary-cut, that is, pass through the turn-cutting die on continuous mould
The clout of unnecessary height component at shell nozzle end 5 is fallen in tool rotary-cut, makes the top end face of housing more smooth, and housing is met height
Spend the requirement of size.In step（1）--- step（10）In, there are two connect bands between the workpiece of adjacent two station all the time.
（11）, on the 13rd station 26 cut off connect band（That is clout）, so far, motor case shaping.Motor case
After shaping, as shown in figure 1, the upper end open width L of lateral incision 27 is equal with its lower end width M, opened by the upper end of lateral incision 27
Mouthful and the outside wall surface of annular sidewall 3 and around casing center axis 8 the girth of upper circumference 41 be more than by the lower end of lateral incision 27 with
And the outside wall surface of annular sidewall 3 and the girth of lower circumference 42 for surrounding casing center axis 8, and the girth of upper circumference 41 is than lower circumference 42
Girth length 3%, annular sidewall 3 is in the up big and down small round platform ring-type close to annular.Certainly, the present invention is not limited to above-mentioned shape
Formula, when in step（4）The upper end open width L1 of middle lateral incision 27 than its lower end width M reduce 5% when, can make motor case into
The upper end open width L of lateral incision 27 and lower end width M after type it is equal and make motor case be molded after the girth of upper circumference 41
It is longer by 5% than the lower girth of circumference 42；When in step（4）The upper end open width L1 of middle lateral incision 27 reduces 3%- than its lower end width M
When between 5%, can make motor case be molded after the upper end open width L of lateral incision 27 and lower end width M it is equal, make motor machine
The girth of upper circumference 41 after casing forming is longer than the lower girth of circumference 42, and the girth of upper circumference 41 after motor case shaping is than lower circle
Between the long 3%-5% of all 42 girths.
Corresponding step should be set gradually between the upper bolster of the continuous mould and die shoe（1）In first station 12
The blanking die, correspondence step（2）In second, third, three drawing dies of the 4th station 17, correspondence step（3）In
The punching blanking mould of 5th station 18, correspondence step（4）In the 6th station 19 can side blow lateral incision 27 side stamp die
Tool, correspondence step（5）In the 7th station 20 can the blanking die of side blow cover plate mounting groove 4, correspondence step（6）In the 8th
The die cutting die for being punched pole pawl 2 of station 21, correspondence step（7）In the 9th station 22 flexible pole pawl 2 bending die
Tool, correspondence step（8）In the tenth station 23 diel, correspondence step（9）In the 11st station 24 shaping mould,
Correspondence step（10）In the 12nd station 25 rotary-cut shaving die and correspondence step（11）In the 13rd station 26
Cut off mould.
The forming method of a kind of motor case of the present invention, above and below the lateral incision 27 of the motor case of final molding is
Opening size is consistent, i.e. the upper end open width L of lateral incision 27 is consistent with lower end width M, two sides interval of lateral incision 27
It is parallel, but because manufacturability loses the influence of circle problem, therefore need when by mould lateral incision, i.e., in step（4）Middle lateral incision
The upper end open width L1 and lower end width M of mouth 27 compare the size for reducing 3%-5%（It is up-small and down-big）, to control deflection, this
Sample is when motor case is molded by serial process mould, and annular sidewall 3 can produce certain deformation, make the upper of lateral incision 27
End opening can be increased slightly and the lower end width of lateral incision 27 is constant, just made up the surplus left before this, made upper and lower opening chi
It is very little consistent（I.e. final finished lateral incision about 27 width dimensions it is consistent）, while making the girth of circumference 41 be more than lower circumference 42
Girth, on the one hand this is the mistake circle problem for solving lateral incision technique, it is ensured that the upper and lower side size of lateral incision 27 is identical；The opposing party
Face, facilitates assembling, because the upper girth of circumference 41 is more larger than the lower girth of circumference 42, so the top opening diameter of annular sidewall 27 is also slightly larger
A bit, it is in the up big and down small round table-like side wall close to annular to make whole annular sidewall 3, so in assembling motor, stator
Fitted easily in Deng intraware.
A kind of forming method of motor case of the present invention, by continuous mould by motor case punch forming, subtracts
Lack positioning work, improve production efficiency and workpiece accuracy.
Claims (4)
1. a kind of motor case forming method, motor case includes the shell that the tubular being set as is enclosed by annular sidewall and an end plate
Body, housing tip is to extend above and below openend, annular sidewall, and end plate is arranged on annular sidewall bottom, and annular sidewall and end plate are
Integral structure, annular sidewall top is provided with lateral incision and the cover plate mounting groove for installing cover plate, and lateral incision is from annular sidewall
Top extends downward into the bottom of annular sidewall, and the upper end open of lateral incision is the opening between the side top of lateral incision two, side
The upper end open width of otch is equal with its lower end width, by lateral incision upper end open and annular sidewall outside wall surface and surrounds
The upper circumference circle of casing center axis is more than by lateral incision lower end and annular sidewall outside wall surface and around casing center axle
The lower circumference circle of line；End plate be provided with centre bore, positioning hole, pole pawl hole and pole pawl, the pole pawl for pole pawl hole hole expect to
The in-flanges of bending in housing, pole pawl hole and pole pawl are set uniformly at intervals around the central axis of housing, and pole pawl is around shell
Body central axis is bent and axially extending arc plate in circular arc, it is characterised in that：Material strip is walked in into motor case continuous
In mould, material strip is carried out on each station of continuous mould including the operation of following process successively：
(1), material strip cut out on first station the front side portion with preceding arc-shaped edges edge, the rear lateral portion with rear arc-shaped edges edge with
And connect band, connect band is connected between forward and backward sidepiece, material strip is punched into when feeding on first station next time before
The rear lateral portion that sidepiece is formed with being punched when the previous stage of the front side portion is punched is relative and collectively forms a circular flitch；
(2) repeatedly load-unload, is carried out to circular flitch, and forms annular sidewall and end plate；
(3) centre bore and positioning hole, are punched into end plate；
(4), to annular sidewall side blow lateral incision, now, the upper end open of lateral incision is located at the top end face of annular sidewall, lateral incision
Upper end open width be less than its lower end width；
(5), to annular sidewall top side blow cover plate mounting groove；
(6) pole pawl, is punched on end plate, now pole pawl and end plate angle at an acute angle；
(7), pole pawl is carried out to bend around the circular arc of casing center axis；
(8) axially extending, is allowed to pole pawl punching press；
(9) shaping, is carried out to pole pawl；
(10) rotary-cut, is carried out to shell nozzle end；
(11) connect band, is cut off.
2. a kind of motor case forming method as claimed in claim 1, it is characterised in that：The forward and backward sidepiece in step (1)
Between be connected with two connect bands altogether, two connect bands are located at the left and right sides of material strip respectively.
3. a kind of motor case forming method as claimed in claim 1, it is characterised in that：In step (2), the circle
Flitch carries out three drawing altogether.
4. a kind of motor case forming method as claimed in claim 1, it is characterised in that：In step (4), lateral incision
Upper end open width reduces 3% -5% than its lower end width.
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| CN107294322B (en) * | 2016-03-27 | 2019-01-18 | 莫玲芝 | A kind of motor machine barrel edge-neatening apparatus |
| CN108723238B (en) * | 2017-04-18 | 2020-10-02 | Ykk株式会社 | Molding machine, method for molding metal material, and method for manufacturing stop claw member |
| CN112531954B (en) * | 2020-12-11 | 2022-03-01 | 安徽雷利智能科技有限公司 | Shell assembly and motor using same |
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| CN203664457U (en) * | 2014-01-17 | 2014-06-25 | 常州工利精机科技有限公司 | Large-gap side punching mechanism for casing |
| CN203664511U (en) * | 2014-01-17 | 2014-06-25 | 常州工利精机科技有限公司 | Tooth profile R forming mechanism for casing electrode claw |
| CN203664478U (en) * | 2014-01-17 | 2014-06-25 | 常州工利精机科技有限公司 | Casing drawing mechanism based on soft connection carrier technology |
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| CN105322692A (en) | 2016-02-10 |
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