CN209647386U - A kind of automotive high-performance micromotor shell drawing die - Google Patents
A kind of automotive high-performance micromotor shell drawing die Download PDFInfo
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- CN209647386U CN209647386U CN201920165800.7U CN201920165800U CN209647386U CN 209647386 U CN209647386 U CN 209647386U CN 201920165800 U CN201920165800 U CN 201920165800U CN 209647386 U CN209647386 U CN 209647386U
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Abstract
The utility model provides a kind of automotive high-performance micromotor shell drawing die, including mutually matched upper die and lower die, is equipped in upper mold and stretches cavity plate made of wolfram steel, is equipped with stretching convex die in lower die.It stretches and offers cavity plate slot in the middle part of cavity plate, cavity plate slot includes the first segment and second segment of seamless connection, first segment is located at the top of second segment, first segment is back taper, second segment is cylindricality, the diameter of the one end of first segment far from second segment is greater than the diameter of one end that first segment connects with second segment, and second segment is equipped with the first outside fillet far from one end of first segment.Stretching convex die includes cylindrical support end and cylindrical punch-pin end, and support end and punch-pin end integrally connected, the diameter at punch-pin end are less than the diameter of support end, and support end is equipped with the second fillet of indent with the junction at punch-pin end.
Description
Technical field
The utility model relates to a kind of mold more particularly to a kind of automotive high-performance micromotor shell drawing dies.
Background technique
Mold is that modernization industry produces one of essential equipment.The progressive die is most important one kind in mold.Even
Continuous mould (also known as progressive die, progressive die) refers to that press machine in one stroke, successively on several different positions, is completed at the same time
The punch die of multiple working procedure.Blanking part gradually shapes in the progressive die, and progressive forming is the process that process is concentrated, and can make
The working procedures such as trimming, notch, grooving, punching, plastic deformation, blanking are completed on a secondary mold.According to the reality of stamping parts
It needs, multiple stamping procedures (being known as station in progressive die) is scheduled in certain sequence and carry out continuous punching.Automobile Micromotor
Shell commonly uses continuously elongated mold and carries out punching production, but Automobile Micromotor requires revolving speed high, low noise, thus to micro machine outside
The requirement of the various aspects of shell will be very high, the rotary-cut trimming of traditional handicraft, and cut sides are too sharp to be easy burr, with motor plastics
Brush holder can scratch the side of brush holder when assembling, and generate plastics break flour, have security risk to motor, serious to will cause motor fortune
It is stuck when turning.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of automotive high-performance micromotor shell drawing die.
To achieve the above object, the utility model adopts the technical scheme that
A kind of automotive high-performance micromotor shell drawing die, including mutually matched upper die and lower die, the upper mold
It is inside equipped with and stretches cavity plate made of wolfram steel, stretching convex die is installed in the lower die.It is offered in the middle part of the stretching cavity plate
Cavity plate slot, the cavity plate slot include the first segment and second segment of seamless connection, and the first segment is located at the top of the second segment,
The first segment is back taper, and the second segment is cylindricality, and the diameter of the one end of the first segment far from the second segment is greater than
The diameter of one end that the first segment connects with the second segment, the second segment are equipped with outside far from one end of the first segment
The first fillet.The stretching convex die includes cylindrical support end and cylindrical punch-pin end, the support end and the punch-pin end
Integrally connected, the diameter at the punch-pin end are less than the diameter of the support end, the junction of the support end and the punch-pin end
The second fillet equipped with indent.
Preferably, the diameter of the support end is less than the diameter of the second segment.
Preferably, the distance between the support end and the second segment inner wall are less than or equal to 0.55 millimeter.
Preferably, the first segment both ends have at least 2 degree of taper.
Preferably, the length of the second segment is more than or equal to 3 millimeters.
Preferably, the length at the punch-pin end is less than the depth of the cavity plate slot.
Preferably, the radius of first fillet is greater than the radius of second fillet.Further, first fillet
Radius be 3.0 millimeters, the radius of second fillet is 0.7 millimeter.
Preferably, micro machine of the sum of the radius of the length at the punch-pin end and second fillet than mold production
The top of shell grows 0.05 to 0.10 millimeter to the length between cut sides.
Compared with prior art, the utility model has the following beneficial effects: passing through the second fillet length dimension of stretching convex die
Control designs with the taper fit gap for stretching cavity plate, can obtain the micromotor shell of fillet size stable molding, and then can make
Micromotor shell has fillet guiding when installing with brush holder, will not generate the break flour of scratch, improve motor production efficiency and
Quality reduces the quality risk of motor.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of automotive high-performance micromotor shell drawing die of the utility model.
Fig. 2 is a kind of working state schematic representation of automotive high-performance micromotor shell drawing die of the utility model.
Fig. 3 is that the micromotor shell that a kind of automotive high-performance micromotor shell drawing die of the utility model produces shows
It is intended to.
Specific embodiment
Further understand to make to have the purpose of this utility model, construction, feature and its function, hereby cooperates embodiment
Detailed description are as follows.
Incorporated by reference to referring to FIG. 1, FIG. 2 and FIG. 3, a kind of automotive high-performance micromotor shell of an embodiment of the present invention
Drawing die, including mutually matched upper die and lower die are equipped with the stretching cavity plate 1 made of wolfram steel, peace in lower die in upper mold
Equipped with stretching convex die 2.
The middle part for stretching cavity plate 1 offers cavity plate slot 3, and cavity plate slot 3 includes the first segment 31 and second segment 32 of seamless connection,
First segment 31 is located at the top of second segment 32, and first segment 31 is back taper, and second segment 32 is cylindricality, and first segment 31 is far from second segment
The diameter of 32 one end is greater than the diameter of one end that first segment 31 connects with second segment 32, second segment 32 far from first segment 31 one
End is equipped with the first outside fillet 33.Wolfram steel is hard alloy, has high hardness, wear-resisting, intensity and toughness preferable, heat-resisting, resistance to
Corrosion etc. a series of excellent performances, especially its high rigidity and wearability, even if 500 DEG C at a temperature of keep substantially not
Become, still has very high hardness at 1000 DEG C.So the stretching cavity plate 1 made using wolfram steel, it can be to the galvanized steel plain sheet after heating
Extruding moulding is carried out, and itself is not in deformation, and it can undergo Multi-step forming to produce with high-wearing feature, is improved whole
The service life of mold.The second segment 32 of cavity plate slot 3 is the unified cylindricality of diameter and its diameter is outside micro machine produced
In the margin of tolerance of shell 4, illustrates dotted line 5 as depicted in figs. 1 and 2, in figure and illustrates one section between dotted line 6 to be second segment 32,
Cylindrical second segment 32 can play the effect of moulding to 4 structure size of micromotor shell, and convenient for guaranteeing 4 ruler of micromotor shell
It is very little it is indeformable under the premise of, carry out the extrusion forming to the angle R (i.e. fillet) of micromotor shell 4.The first segment 31 of cavity plate slot 3 is
Tapered, as depicted in figs. 1 and 2, it is first segment 31 that the part of 5 or more dotted line is illustrated in figure, and tapered first segment 31 is convenient at the angle R
It is demoulded after extrusion forming.First fillet 33 stretches in cavity plate 1 can smoothly enter into stretching convex die 2, and can be in punching course
Certain pressuring action is played, and Deformation Flow space can be provided to the extra steel squeezed out in punching course.
Stretching convex die 2 includes cylindrical support end 21 and cylindrical punch-pin end 22, as depicted in figs. 1 and 2, to illustrate dotted line
7 to be divided to stretching convex die 2 be two sections, and 7 below one sections of dotted line of signal are support end 21, and one section of 7 or more dotted line of signal is punch-pin
End 21,22 integrally connected of support end 21 and punch-pin end avoids the occurrence of seam, influences punching press effect；The diameter at punch-pin end 22 is less than
The junction at the diameter of support end 21, support end 21 and punch-pin end 22 is equipped with the second fillet 23 of indent.Second fillet 23 is set
Meter can replace the rotary-cut trimming of traditional handicraft, can produce the micromotor shell 4 with the smooth angle R, and utilize the second fillet
The 23 stamping forming angles R can play guiding role when brush holder is installed, and keep brush holder installation more smooth, will not generate scratch
Break flour, proposes the efficiency and quality for having done motor production, and Du has determined the quality risk of motor.
In actual operation, hot-dip galvanizing sheet steel is sleeved in stretching convex die 2, stretch cavity plate 1 on punching machine with upper mold to
Lower punching stretch stretches cavity plate 1 and is sleeved in the stretching convex die 2 for being cased with hot-dip galvanizing sheet steel, directly hot-dip galvanizing sheet steel is expressed to
At second fillet 23 of stretching convex die 2, the angle R for needing size is obtained, and then obtain the shape needed.
Preferably, the diameter of support end 21 is less than the diameter of second segment 32.It can convenient for the stretching convex die 2 in punching course
It can smoothly enter into and stretch in cavity plate 1.
Preferably, the distance between support end 21 and 32 inner wall of second segment d are less than or equal to 0.55 millimeter, ensure that punching press is complete
There is relatively thin thickness at the steel plate of rear redundance, convenient for the progress of rotary-cut trimming work, reduce trimming difficulty.
Preferably, 31 both ends of first segment have at least 2 degree of taper b, can play the role of it is easily demoulding and
Micromotor shell 4 is indeformable in punching course.
Preferably, the length a of second segment 32 is more than or equal to 3 millimeters.Tolerance of the diameter of second segment 32 in micromotor shell 4
In range, can play the role of limiting 4 size of micromotor shell, due in punching course, galvanized steel plain sheet can with punching press into
It goes and deforms, the extra steel for deforming generation can squeeze movement toward two sides, if 32 length of second segment is too short, be easy to cause second
The redundance of deformed steel plate is mobile to the housing parts of micromotor shell 4 at fillet 23, influences the essence of micromotor shell 4
Degree, even resulting in smoothly to demould, and 32 length of second segment is greater than 3 millimeters, be avoided that extra steel at micromotor shell 4
It moves, and then extra steel is expressed to the outside of the first fillet 33, guarantee the dimensional accuracy of micromotor shell 4.
Preferably, the length at punch-pin end 22 is less than the depth of cavity plate slot 3, can guarantee that the angle R is molding and goes on smoothly.
Preferably, the radius of the first fillet 33 is greater than the radius of the second fillet 23.The radius of first fillet 33 is 3.0 millis
Rice is able to cooperate the progress for completing the work of rotary-cut section, and the radius of the second fillet 23 is 0.7 millimeter, and the second fillet 23 can be rushed successfully
The angle R that radius is 0.7 millimeter is extruded, not only can guarantee that R angle surface was smooth, but also guiding role can be played, and be installed into brush holder smoothly
Scrapings are not generated in micromotor shell 4 and；The angle R of 0.7 specification not only in the thickness range of micromotor shell 4, but also does not influence micro-
The use of motor housing 4, and the quality of micromotor shell 4 is not influenced.
Preferably, the sum of radius of the length at punch-pin end 22 and the second fillet 23 h1 is than micromotor shell 4 that mold produces
Top grow 0.05-0.10 millimeters to the length h2 between cut sides, can micromotor shell 4 carry out rotary-cut trimming when give
The certain error range of trimming guarantees that the angle R exists always.
From the above mentioned, a kind of automotive high-performance micromotor shell drawing die of the utility model, passes through stretching convex die
The second fillet length dimension control, with stretch cavity plate taper fit gap design, fillet size stable molding can be obtained
Micromotor shell, and then micromotor shell can be made to have fillet guiding when installing with brush holder, the break flour of scratch will not be generated, is improved
The efficiency and quality of motor production, reduce the quality risk of motor.
The utility model is described by above-mentioned related embodiment, however above-described embodiment is only to implement the utility model
Example.It must be noted that the embodiment disclosed is not limiting as the scope of the utility model.On the contrary, not departing from this
It is changed and retouched made by the spirit and scope of utility model, belongs to the scope of patent protection of the utility model.
Claims (9)
1. a kind of automotive high-performance micromotor shell drawing die, characterized by comprising: mutually matched upper die and lower die,
It is equipped in the upper mold and stretches cavity plate made of wolfram steel, stretching convex die is installed in the lower die；
Cavity plate slot is offered in the middle part of the stretching cavity plate, the cavity plate slot includes the first segment and second segment of seamless connection, described
First segment is located at the top of the second segment, and the first segment is back taper, and the second segment is cylindricality, and the first segment is separate
The diameter of one end of the second segment is greater than the diameter of one end that the first segment connects with the second segment, and the second segment is remote
One end from the first segment is equipped with the first outside fillet；
The stretching convex die includes cylindrical support end and cylindrical punch-pin end, and the support end and the punch-pin end integrally connect
It connects, the diameter at the punch-pin end is less than the diameter of the support end, and the junction at the support end and the punch-pin end is equipped with interior
The second recessed fillet.
2. automotive high-performance micromotor shell drawing die as described in claim 1, it is characterised in that: the support end
Diameter is less than the diameter of the second segment.
3. automotive high-performance micromotor shell drawing die as described in claim 1, it is characterised in that: the support end with
The distance between described second segment inner wall is less than or equal to 0.55 millimeter.
4. automotive high-performance micromotor shell drawing die as described in claim 1, it is characterised in that: the first segment two
Hold the taper at least 2 degree.
5. automotive high-performance micromotor shell drawing die as described in claim 1, it is characterised in that: the second segment
Length is more than or equal to 3 millimeters.
6. automotive high-performance micromotor shell drawing die as described in claim 1, it is characterised in that: the punch-pin end
Length is less than the depth of the cavity plate slot.
7. automotive high-performance micromotor shell drawing die as described in claim 1, it is characterised in that: first fillet
Radius be greater than second fillet radius.
8. automotive high-performance micromotor shell drawing die as claimed in claim 7, it is characterised in that: first fillet
Radius be 3.0 millimeters, the radius of second fillet is 0.7 millimeter.
9. automotive high-performance micromotor shell drawing die as described in claim 1, it is characterised in that: the punch-pin end
The sum of radius of length and second fillet is than the top for the micromotor shell that the mold produces to long between cut sides
Degree grows 0.05 to 0.10 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920165800.7U CN209647386U (en) | 2019-01-30 | 2019-01-30 | A kind of automotive high-performance micromotor shell drawing die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920165800.7U CN209647386U (en) | 2019-01-30 | 2019-01-30 | A kind of automotive high-performance micromotor shell drawing die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209647386U true CN209647386U (en) | 2019-11-19 |
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ID=68523507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920165800.7U Active CN209647386U (en) | 2019-01-30 | 2019-01-30 | A kind of automotive high-performance micromotor shell drawing die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209647386U (en) |
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2019
- 2019-01-30 CN CN201920165800.7U patent/CN209647386U/en active Active
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