CN113224917A - Production process of stepping motor winding shaft - Google Patents
Production process of stepping motor winding shaft Download PDFInfo
- Publication number
- CN113224917A CN113224917A CN202110410631.0A CN202110410631A CN113224917A CN 113224917 A CN113224917 A CN 113224917A CN 202110410631 A CN202110410631 A CN 202110410631A CN 113224917 A CN113224917 A CN 113224917A
- Authority
- CN
- China
- Prior art keywords
- main body
- body part
- material belt
- stepping motor
- heat treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000004804 winding Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000001746 injection moulding Methods 0.000 claims abstract description 17
- 238000004080 punching Methods 0.000 claims abstract description 16
- 230000005347 demagnetization Effects 0.000 claims abstract description 15
- 238000009713 electroplating Methods 0.000 claims abstract description 13
- 239000007769 metal material Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
- H02K15/0435—Wound windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
- H01F13/006—Methods and devices for demagnetising of magnetic bodies, e.g. workpieces, sheet material
Abstract
A production process of a stepping motor winding shaft comprises the following steps: step one, providing a metal material belt; step two, carrying out demagnetization heat treatment on the material belt; step three, electroplating the heat-treated material belt; stamping more than one area to be processed on the material belt, wherein the area to be processed comprises plate edges and a metal main body part; step five, injection molding the winding part on the metal main body part; and step six, forming an independent product by punching. According to the invention, the demagnetization heat treatment is carried out on the raw material, and then the positioning hole is punched on the material belt, so that the subsequent in-mold injection molding and punching are accurately positioned, the problems of positioning hole deformation and inaccurate positioning caused by the heat treatment can be fundamentally solved, and the product percent of pass is greatly improved. In addition, in order to ensure that the coercivity coefficient is within the standard range, the coercivity is set to be close to the minimum value during demagnetization heat treatment, and the increase value of the coercivity is controlled through stamping and injection molding processes, so that the final value of the coercivity is within the required standard requirement range.
Description
Technical Field
The invention relates to a motor accessory, in particular to a production process of a stepping motor winding shaft.
Background
The stepping motor is internally provided with a winding, the winding is provided with a winding shaft for winding, and the winding shaft must be demagnetized in the production process. This spool includes the metal main part and locates the colloidal part on the metal main part, the traditional processing technology of spool usually is: the method comprises the following steps of raw material stamping and forming of a metal main body part, demagnetization heat treatment, electroplating, injection molding of a colloid part in a mold and finished product, wherein a positioning hole needs to be formed when the metal main body part is stamped and formed so as to accurately position the subsequent injection molding in the mold. However, in the conventional process, after demagnetization heat treatment, the positioning hole formed by punch forming is very easy to deform, so that the deformed positioning hole cannot be accurately positioned when in-mold injection molding, the large-scale defective products are easy to cause, and the method is one of the biggest difficulties and pain points in the industry at present.
Disclosure of Invention
Therefore, the invention aims to provide a production process of a stepping motor bobbin, so as to solve the problems that the traditional stepping motor bobbin is easy to deform and poor in alignment accuracy in the production process.
A production process of a stepping motor winding shaft comprises the following steps:
providing a metal material belt, wherein the material belt is made of iron;
step two, heat treatment, namely placing the metal material belt in a furnace for demagnetization heat treatment;
electroplating, namely electroplating the demagnetized and heat-treated material strip;
stamping, namely stamping and forming more than one to-be-processed area on the material belt, wherein the to-be-processed area comprises plate edges and a metal main body part arranged on the inner sides of the plate edges, positioning holes are formed in the plate edges, and connecting ribs are arranged between the metal main body part and the plate edges;
step five, injection molding in a mold, namely putting the punched and formed material belt into the mold, and forming a winding part on the metal main body part;
and step six, punching, namely punching the plate edges and the connecting ribs on the outer side of the metal main body part to form an independent product.
Further, in step two, the coercive force of the heat treatment is set to the smaller value of the allowable range values.
Furthermore, the metal main body part is also provided with a terminal which is connected with the metal main body part and the plate edge; in the sixth step, after punching, the punched surface of the terminal is an electroless plated surface.
And seventhly, electroplating the end face, and electroplating the end face of the terminal.
Further, in the fourth step, the stamping forming step specifically includes cutting the shape, punching the positioning hole and the forming hole, the shape of the plate edge is cut first, and then the positioning hole and the forming hole are punched on the plate edge to form the metal main body part.
Furthermore, a central hole is formed in the metal main body part, horizontal teeth extend towards the central position of the central hole, and the punch forming further comprises a forming step so as to bend the horizontal teeth of the teeth.
Furthermore, in the fifth step, the two punched and formed material belts are aligned back to back, and then placed into a mold for injection molding.
In conclusion, the invention carries out demagnetization heat treatment on the raw material firstly, and then punches the positioning hole on the material belt to carry out accurate positioning on the subsequent in-mold injection molding and punching, thereby fundamentally solving the problems of deformation and inaccurate positioning of the positioning hole caused by the heat treatment and greatly improving the product percent of pass. In addition, in order to ensure that the coercivity coefficient is within the standard range, the coercivity is set to be close to the minimum value within the standard range during demagnetization heat treatment, and the increment value of the coercivity is controlled through stamping and injection molding processes, so that the final value of the coercivity is within the required standard requirement range. The invention has strong applicability and strong popularization significance
Drawings
FIG. 1 is a schematic view of a bobbin of a stepping motor according to the present invention;
fig. 2 is a schematic view of a structural change of a bobbin of a stepping motor according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1 and 2, the present invention provides a manufacturing process of a stepping motor bobbin, which is used for manufacturing and processing the motor bobbin. The stepping motor bobbin includes a metal body 10, a terminal 20 provided on one side of the metal body 10, and a bobbin 30 provided on both upper and lower sides of the metal body 10.
The production process of the stepping motor winding shaft specifically comprises the following steps:
step one, providing a metal material belt 40, wherein the material of the metal material belt 40 is pure iron.
And step two, demagnetization heat treatment, namely, the metal material belt 40 is placed into a vacuum furnace for high-temperature demagnetization, and the material belt after heat treatment can be continuously stored into a coil without worrying about the influence of elongation deformation on subsequent processing. Further, at the time of performing demagnetization heat treatment, the coercive force of the demagnetization heat treatment is set to a lower value in an allowable range, such as: if the heat treatment value of the traditional procedure is 70-80A/m, the coercive force can be set to be 30-40A/m within the range value in the procedure; so that the subsequent coercivity can be controllably increased.
And step three, electroplating, namely electroplating the demagnetized metal material belt. In this embodiment, when the material tape is a coiled material, the material tape needs to be cut into sections, and each section can be used for processing more than one product. To improve the electroplating efficiency, the material belt section is usually configured to have a plurality of product forming areas as one section.
And fourthly, performing punch forming, namely performing punch forming on the electroplated material belt to form a plurality of continuous to-be-rolled areas 50, wherein each to-be-rolled area 50 comprises a plate edge 51, a to-be-rolled main body part 52 arranged on the inner side of the plate edge, and a terminal 53 connected to the plate edge 51 and the to-be-rolled main body part 52. The plate edge 51 is provided with a plurality of positioning holes for precise positioning of subsequent in-mold injection molding, and more than one rib 54 is arranged between the main body part 52 to be rolled and the plate edge 51. In addition, the main body 52 to be rolled is provided with a plurality of teeth 55 at the middle, and the teeth 55 extend from the periphery toward the center.
When punching and forming, firstly cutting the shape of the plate edge 51, and then punching a positioning hole and forming a forming hole of the main body part 52 to be rolled and the terminal 53 in the middle; then, rolling is performed again, the teeth 55 at the middle of the main body 52 to be rolled are bent downward to be perpendicular to each other, and a central hole 56 is formed at the middle of the main body 52 to be rolled.
In addition, in the process of stamping forming, controllable factors which can greatly increase the coercive force are strictly controlled, such as: avoiding metal collision, ensuring the sharpness of the cutter, reducing the mantle and the like.
And step five, performing injection molding in the mold, namely putting the material belt subjected to punch forming into an injection mold to perform injection molding on the winding part 30, and accurately positioning the material belt through the positioning hole on the plate edge 51. In this embodiment, two material belts need to be placed back to back into the injection mold at the same time, that is, the teeth 30 of the two material belts are both arranged in the opposite direction.
And step injection and punching, namely cutting the injection-molded plate edge 51 and the connecting rib 54, the metal main body part 10 and the terminal 20 to form an independent finished product. The section of the punched terminal 30 is an un-plated surface, and an end surface plating step can be added according to the requirement.
In conclusion, the invention carries out demagnetization heat treatment on the raw material firstly, and then punches the positioning hole on the material belt to carry out accurate positioning on the subsequent in-mold injection molding and punching, thereby fundamentally solving the problems of deformation and inaccurate positioning of the positioning hole caused by the heat treatment and greatly improving the product percent of pass. In addition, in order to ensure that the coercivity coefficient is within the standard range, the coercivity is set to be close to the minimum value within the standard range during demagnetization heat treatment, and the increment value of the coercivity is controlled through stamping and injection molding processes, so that the final value of the coercivity is within the required standard range. The invention has strong applicability and strong popularization significance.
The above-mentioned embodiments only represent one embodiment of the present invention, and the description is specific and detailed, but not understood as the limitation of the scope of the invention, it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the concept of the present invention, and these are within the scope of the invention, and therefore, the scope of the invention should be determined by the appended claims.
Claims (7)
1. A production process of a stepping motor winding shaft is characterized by comprising the following steps: the method comprises the following steps:
providing a metal material belt, wherein the material belt is made of iron;
step two, heat treatment, namely placing the metal material belt in a furnace for demagnetization heat treatment;
electroplating, namely electroplating the demagnetized and heat-treated material strip;
stamping, namely stamping and forming more than one to-be-processed area on the material belt, wherein the to-be-processed area comprises plate edges and a metal main body part arranged on the inner sides of the plate edges, positioning holes are formed in the plate edges, and connecting ribs are arranged between the metal main body part and the plate edges;
step five, injection molding in a mold, namely putting the punched and formed material belt into the mold, and forming a winding part on the metal main body part;
and step six, punching, namely punching the plate edges and the connecting ribs on the outer side of the metal main body part to form an independent product.
2. A process for manufacturing a stepping motor bobbin as claimed in claim 1, wherein: in step two, the coercivity of the heat treatment is set to the smaller value of the allowable range values.
3. A process for manufacturing a stepping motor bobbin as claimed in claim 1, wherein: the metal main body part is also provided with a terminal which is connected with the metal main body part and the plate edge; in the sixth step, after punching, the punched surface of the terminal is an electroless plated surface.
4. A process for manufacturing a stepping motor bobbin as claimed in claim 3, wherein: and seventhly, electroplating the end face, and electroplating the end face of the terminal.
5. A process for manufacturing a stepping motor bobbin as claimed in claim 1, wherein: in the fourth step, the step of punching forming specifically comprises cutting the shape, punching the positioning hole and the forming hole, the shape of the plate edge is cut firstly, and then the positioning hole and the forming hole are punched on the plate edge to form the metal main body part.
6. The process for producing a stepping motor bobbin as claimed in claim 5, wherein: the metal main body part is internally provided with a central hole, the central hole extends towards the central position to form horizontal teeth, and the punch forming further comprises a forming step to bend the horizontal teeth.
7. A process for manufacturing a stepping motor bobbin as claimed in claim 1, wherein: in the fifth step, the two punched and formed material belts are aligned back to back and then placed into a mold for injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110410631.0A CN113224917A (en) | 2021-04-14 | 2021-04-14 | Production process of stepping motor winding shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110410631.0A CN113224917A (en) | 2021-04-14 | 2021-04-14 | Production process of stepping motor winding shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113224917A true CN113224917A (en) | 2021-08-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110410631.0A Pending CN113224917A (en) | 2021-04-14 | 2021-04-14 | Production process of stepping motor winding shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113224917A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007020271A (en) * | 2005-07-06 | 2007-01-25 | Ntn Corp | Bearing apparatus of in-wheel motor |
| DE102015215624A1 (en) * | 2015-08-17 | 2017-02-23 | Schaeffler Technologies AG & Co. KG | Process for producing bearing components by means of a production line, production line and manufacturing plant |
| CN206932075U (en) * | 2017-06-20 | 2018-01-26 | 深圳市金峰精密机械电子有限公司 | A kind of middle pole plate material strip of micro-step motor |
| CN208840239U (en) * | 2018-09-30 | 2019-05-10 | 绍兴杨鑫金属制品有限公司 | A kind of stainless steel anti-corrosion yarn pot bottom reinforcement apparatus for leveling |
-
2021
- 2021-04-14 CN CN202110410631.0A patent/CN113224917A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007020271A (en) * | 2005-07-06 | 2007-01-25 | Ntn Corp | Bearing apparatus of in-wheel motor |
| DE102015215624A1 (en) * | 2015-08-17 | 2017-02-23 | Schaeffler Technologies AG & Co. KG | Process for producing bearing components by means of a production line, production line and manufacturing plant |
| CN206932075U (en) * | 2017-06-20 | 2018-01-26 | 深圳市金峰精密机械电子有限公司 | A kind of middle pole plate material strip of micro-step motor |
| CN208840239U (en) * | 2018-09-30 | 2019-05-10 | 绍兴杨鑫金属制品有限公司 | A kind of stainless steel anti-corrosion yarn pot bottom reinforcement apparatus for leveling |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210806 |
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| RJ01 | Rejection of invention patent application after publication |