JP3612888B2 - Bracket manufacturing method - Google Patents

Bracket manufacturing method Download PDF

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Publication number
JP3612888B2
JP3612888B2 JP25809396A JP25809396A JP3612888B2 JP 3612888 B2 JP3612888 B2 JP 3612888B2 JP 25809396 A JP25809396 A JP 25809396A JP 25809396 A JP25809396 A JP 25809396A JP 3612888 B2 JP3612888 B2 JP 3612888B2
Authority
JP
Japan
Prior art keywords
bracket
press
fit
hoop
manufacturing
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.)
Expired - Lifetime
Application number
JP25809396A
Other languages
Japanese (ja)
Other versions
JPH10108423A (en
Inventor
昌彦 森崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP25809396A priority Critical patent/JP3612888B2/en
Publication of JPH10108423A publication Critical patent/JPH10108423A/en
Application granted granted Critical
Publication of JP3612888B2 publication Critical patent/JP3612888B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Motor Or Generator Frames (AREA)
  • Manufacture Of Motors, Generators (AREA)

Description

【0001】
【発明の属する技術分野】
本発明はブラケットの製造方法に関する。
【0002】
【従来の技術】
図3は従来の電動機の一部断面図である。1は固定子完成品、2は回転子完成品、3は波形ワッシャ、4はブラケットである。従来より、組立工数の削減,ギャップ精度の確保等を目的に、図4のようなブラケットを圧入して固定する方法が採られてきた。
【0003】
図4(a)が従来のブラケットであり、図4(b)が従来のブラケットの製造方法であります。図4(a)が示すブラケットは、5が内圧入部、6が外圧入部であり、内外径とも圧入部位は円周全体である。そして、このブラケットの製造方法として、まずブラケットの材料板となるフープを第1のプレス加工により内圧入部5を形成し、その後第2のプレス加工により外圧入部6の形成とフープからのブラケットの切断を同時に行いブラケットを形成していた。
【0004】
【発明が解決しようとする課題】
図3に示すように、ブラケットの内圧入部と外圧入部との間に、電動機の突出部圧入し固定するために、内圧入部5と外圧入部6で高い精度を要求されていた。
【0005】
しかし、従来のブラケットの製造方法では、内圧入部5の形成と、外圧入部6の形成を異なるプレス加工により行い、外圧入部のプレス加工と同時にフープの切断を行っていた
ので、外圧入部6を形成する時にはブラケット部はフープから切り離されており、ブラケットの高い精度を出すことは困難であった。
【0006】
本発明のブラケットの製造方法は、内圧入部と外圧入部とで高い精度を備えた圧入部を有するブラケットを提供することを目的とする。
【0007】
【課題を解決するための手段】
この課題を解決するために本発明は、ブラケット部外周の圧入部の押し出し成形中、ブラケット部はスクラップ部に複数の支持部のみで固定され、その後、支持部のみを切断することとしたものであり、精度の高いブラケットを提供することができる。
【0008】
【発明の実施の形態】
本発明のブラケットの製造方法は、外周に圧入部を有するブラケット部をフーププレス加工により押し出し成形するブラケットの製造方法において、前記ブラケット部を、前記フープのスクラップ部との間に複数形成された支持部のみにより前記ブラケット部と前記スクラップ部を連結する状態で、圧入部を押し出し成形した後、前記支持部のみを切断することとしたものである。
【0009】
【実施例】
以下本発明の実施例について、図1,図2を用いて説明する。
【0010】
図1(a)はブラケットの1例を示しており、ブラケット11には電動機のシャフトを通すシャフト穴12を有し、ブラケットの外周付近に、電動機のブラケット接合部と嵌合する内圧入部13と外圧入部14からなる圧入部15を備える。この圧入部15は凹形状をしており、電動機の凸状の接合部に圧入しブラケット11の固定を行う。圧入部15は接合部に圧入した時、外側に押され、その押された力の反発力により接合部の両側を圧入部ではさみ固定する。
【0011】
次に、このブラケットの圧入部の製造方法について、図1(b)のステップ図を示して説明する。フープ16は、スクラップ部17とブラケット部18からなり、スクラップ部17とブラケット部18は支持部19のみにより連結されている。この時のブラケット部18は複数のプレス加工によりシャフト穴12を備え、電動機の形状に適合するように、ブラケットの内部を突出させている。なお、支持部19は3ヶ所で備えているが、少なくとも1ヶ所でも設ければよいが、ブラケット11の精度をより高精度にしようとする場合には、支持部19は少なくとも3ヶ所で必要とする。
【0012】
このフープ16は内圧入部プレス加工により、ブラケット部18の内圧入部13の形成を行う。その後、外圧入部プレス加工により、ブラケット部18をプレスし外圧入部14の形成を行う。ブラケット部18とフープ部16とは支持部19のみにより連結されており、ブラケット11は内圧入部13のプレス加工の時も、外圧入部14のプレス加工の時も、フープ16の1部として保持されている。よって、プレス中にブラケット部18が動かず、圧入部15の形状は高い精度を備える。
【0013】
このように、圧入部15を形成した後、プレス加工により支持部19を切断する。
【0014】
以上のように、圧入部15の成形後に、ブラケット部18とスクラップ部17との切断を行ったので、プレス加工中は必ずブラケット部18は固定しており、圧入部15の寸法は高い精度を備える。
【0015】
【発明の効果】
以上の説明から明らかなように、請求項1の発明のブラケットの製造方法によれば、圧入部の寸法は高い精度を備えることができる。
【図面の簡単な説明】
【図1】(a)本発明の実施例のブラケットの構造を示す図
(b)同ブラケットの製造方法を示すステップ図
【図2】同フープを示す図
【図3】モータ駆動装置の部分断面図
【図4】(a)従来のブラケットの構造を示す図
(b)同ブラケットの製造方法を示すステップ図
【符号の説明】
15 圧入部
16 フープ
17 スクラップ部
18 ブラケット部
19 支持部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a bracket.
[0002]
[Prior art]
FIG. 3 is a partial sectional view of a conventional electric motor. 1 is a finished stator product, 2 is a finished rotor product, 3 is a wave washer, and 4 is a bracket. Conventionally, for the purpose of reducing assembly man-hours and ensuring gap accuracy, a method of press-fitting and fixing a bracket as shown in FIG. 4 has been adopted.
[0003]
Fig. 4 (a) shows a conventional bracket, and Fig. 4 (b) shows a conventional bracket manufacturing method. In the bracket shown in FIG. 4A, 5 is an inner press-fit portion, 6 is an external press-fit portion, and the press-fit portion is the entire circumference with both inner and outer diameters. As a manufacturing method of the bracket, first, a hoop to be a material plate of the bracket is formed by the first press working to form the inner press-fitting portion 5, and then the second press working to form the outer press-fitting portion 6 and cutting the bracket from the hoop. At the same time, a bracket was formed.
[0004]
[Problems to be solved by the invention]
As shown in FIG. 3, high precision is required in the inner press-fit portion 5 and the outer press-fit portion 6 in order to press-fit and fix the protruding portion of the electric motor between the inner press-fit portion and the outer press-fit portion of the bracket.
[0005]
However, in the conventional manufacturing method of the bracket, the formation of the inner press-fit portion 5 and the formation of the outer press-fit portion 6 are performed by different pressing processes, and the hoop is cut simultaneously with the pressing process of the outer press-fit section. When doing so, the bracket portion is separated from the hoop, and it is difficult to achieve high accuracy of the bracket.
[0006]
The manufacturing method of the bracket of this invention aims at providing the bracket which has a press-fit part with a high precision with an internal press-fit part and an external press-fit part.
[0007]
[Means for Solving the Problems]
In order to solve this problem, the present invention is such that during extrusion molding of the press-fitting portion on the outer periphery of the bracket portion, the bracket portion is fixed to the scrap portion with only a plurality of support portions, and thereafter, only the support portions are cut. Ah is, it is possible to provide a highly accurate bracket.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Manufacturing method of the bracket of the present invention, a plurality formed during the method of manufacturing a bracket for more extruding bracket portion having a press-fit portion on the outer periphery to the hoop of the press machining, the bracket portion, the scrap portion of the hoop In a state where the bracket portion and the scrap portion are connected only by the supported portion, the press-fit portion is extruded and then only the support portion is cut.
[0009]
【Example】
Embodiments of the present invention will be described below with reference to FIGS.
[0010]
FIG. 1A shows an example of a bracket. The bracket 11 has a shaft hole 12 through which the shaft of the electric motor passes, and an internal press-fit portion 13 that fits with the bracket joint of the electric motor near the outer periphery of the bracket. A press-fitting part 15 including an external press-fitting part 14 is provided. The press-fitting portion 15 has a concave shape, and is press-fitted into a convex joint portion of the electric motor to fix the bracket 11. When the press-fit portion 15 is press-fitted into the joint portion, the press-fit portion 15 is pushed outward, and the both sides of the joint portion are pinched and fixed at the press-fit portion by the repulsive force of the pushed force.
[0011]
Next, a method for manufacturing the press-fitting portion of the bracket will be described with reference to the step diagram of FIG. Hoop 16 consists scrap portion 17 and the bracket portion 18, scrap portions 17 and bracket portion 18 are connected only by supporting lifting unit 19. At this time, the bracket portion 18 includes a shaft hole 12 by a plurality of press processes, and the inside of the bracket is protruded so as to conform to the shape of the electric motor. In addition, although the support part 19 is provided in three places, it is sufficient to provide at least one place. However, when the precision of the bracket 11 is to be made higher, the support part 19 is required in at least three places. To do.
[0012]
The hoop 16 forms the inner press-fit portion 13 of the bracket portion 18 by press-working the inner press-fit portion. Thereafter, the bracket portion 18 is pressed to form the external press-fit portion 14 by external press-fit portion press processing. The bracket portion 18 and the hoop portion 16 are connected only by the support portion 19, and the bracket 11 is held as a part of the hoop 16 both when the inner press-fit portion 13 is pressed and when the outer press-fit portion 14 is pressed. ing. Therefore, the bracket portion 18 does not move during pressing, and the shape of the press-fit portion 15 has high accuracy.
[0013]
Thus, after forming the press fit part 15, the support part 19 is cut | disconnected by press work.
[0014]
As described above, since the bracket portion 18 and the scrap portion 17 are cut after the press-fit portion 15 is formed, the bracket portion 18 is always fixed during the press working, and the size of the press-fit portion 15 is highly accurate. Prepare.
[0015]
【The invention's effect】
As apparent from the above description, according to the bracket manufacturing method of the first aspect of the present invention, the size of the press-fit portion can be provided with high accuracy .
[Brief description of the drawings]
FIG. 1A is a diagram showing a structure of a bracket according to an embodiment of the present invention, FIG. 1B is a step diagram showing a manufacturing method of the bracket, FIG. 2 is a diagram showing the hoop, and FIG. [Fig. 4] (a) A diagram showing a structure of a conventional bracket (b) A step diagram showing a manufacturing method of the bracket [Explanation of symbols]
15 Press-in part 16 Hoop 17 Scrap part 18 Bracket part 19 Support part

Claims (1)

外周に圧入部を有するブラケット部をフーププレス加工により押し出し成形するブラケットの製造方法において、前記ブラケット部を、前記フープのスクラップ部との間に複数形成された支持部のみにより前記ブラケット部と前記スクラップ部を連結する状態で、圧入部を押し出し成形した後、前記支持部のみを切断し、ブラケットの完成品を製造するブラケットの製造方法。 In the method for manufacturing a bracket for more extruding bracket portion having a press-fit portion on the outer periphery to the hoop of the press machining, the bracket part, by only the support portion which is plurally formed between the scrap portion of the hoop the bracket portion In a state where the scrap part is connected, the press-fitting part is extruded and then only the support part is cut to produce a bracket finished product.
JP25809396A 1996-09-30 1996-09-30 Bracket manufacturing method Expired - Lifetime JP3612888B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25809396A JP3612888B2 (en) 1996-09-30 1996-09-30 Bracket manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25809396A JP3612888B2 (en) 1996-09-30 1996-09-30 Bracket manufacturing method

Publications (2)

Publication Number Publication Date
JPH10108423A JPH10108423A (en) 1998-04-24
JP3612888B2 true JP3612888B2 (en) 2005-01-19

Family

ID=17315420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25809396A Expired - Lifetime JP3612888B2 (en) 1996-09-30 1996-09-30 Bracket manufacturing method

Country Status (1)

Country Link
JP (1) JP3612888B2 (en)

Also Published As

Publication number Publication date
JPH10108423A (en) 1998-04-24

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