JPS6239050B2 - - Google Patents
Info
- Publication number
- JPS6239050B2 JPS6239050B2 JP54093452A JP9345279A JPS6239050B2 JP S6239050 B2 JPS6239050 B2 JP S6239050B2 JP 54093452 A JP54093452 A JP 54093452A JP 9345279 A JP9345279 A JP 9345279A JP S6239050 B2 JPS6239050 B2 JP S6239050B2
- Authority
- JP
- Japan
- Prior art keywords
- metal tube
- collar plate
- hole
- inclined hole
- eccentric
- 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
Links
- 239000002184 metal Substances 0.000 claims description 27
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Gears, Cams (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【発明の詳細な説明】
冷凍機用クランクシヤフトは、油を通すために
中空をなし、かつ要所に、平衡板を兼ねる鍔板を
備えている。DETAILED DESCRIPTION OF THE INVENTION A crankshaft for a refrigerator is hollow to allow oil to pass therethrough, and is provided with flange plates at key points that also serve as balance plates.
そのため従来は、鋳造もしくは鍛造により輪郭
体を形成し、外面要所を、切削並びに研磨すると
ともに、偏心する軸部の各端部から中空孔を穿設
して製造されており、多大の工数を要していた。 Conventionally, therefore, the contour body was formed by casting or forging, the key points on the outer surface were cut and polished, and hollow holes were drilled from each end of the eccentric shaft, which required a large amount of man-hours. It was necessary.
本発明は、別途準備された鍔板と管体とを使用
し、バルジ加工により、きわめて簡単に、かつ少
ない工程をもつて、冷凍機用クランクシヤフトを
製造する方法に関するもので、以下、図面に基い
て説明する。 The present invention relates to a method of manufacturing a crankshaft for a refrigerator using a separately prepared flange plate and a pipe body through bulge processing in an extremely simple manner and with a small number of steps. I will explain based on this.
まず第１図に示すような所要寸法の金属管１
と、第２，３図に示すような鍔板２とを用意す
る。 First, a metal pipe 1 with the required dimensions as shown in Figure 1.
and a collar plate 2 as shown in FIGS. 2 and 3 are prepared.
鍔板２は、プレス加工又は機械加工により製作
され、完成品の不平衡荷重を相殺するのにふさわ
しい外形と寸法を有し、要所に、金属管１を嵌合
しうる受孔３を備え、孔３の一側には、やや大寸
の傾斜孔４が、同じく他側には、僅かに大径の回
り止め窪み５′付段孔５が連設されている。 The collar plate 2 is manufactured by press working or machining, has an external shape and dimensions suitable for offsetting the unbalanced load of the finished product, and is provided with receiving holes 3 at key points into which the metal pipe 1 can be fitted. A slightly large inclined hole 4 is connected to one side of the hole 3, and a stepped hole 5 with a slightly large diameter detent recess 5' is connected to the other side.
傾斜孔４の形状及び寸法は、完成品の軸部の径
及び偏心度に応じて定められるが、特にその深さ
は、後述するように、完成品の軸部の折曲部が、
鍔板２の表面より出ることのないように定めるの
が望ましい。 The shape and dimensions of the inclined hole 4 are determined depending on the diameter and eccentricity of the shaft of the finished product, and in particular, its depth is determined depending on the bent portion of the shaft of the finished product, as will be described later.
It is desirable to set it so that it does not protrude beyond the surface of the flange plate 2.
第４図に示すように、主軸部となるべき金属管
１の一端部所要長を固定治具６で把持するととも
に、偏心軸部となるべき金属管１の他端部所要長
を可動治具７で把持し、第５図に示すように、可
動治具７を金属管１の軸線と直交する方向に所要
量変位させることにより、金属管１の要所を屈曲
１ａさせ、その端部所要長を、所要量偏心させ
る。なお、この偏心加工は、プレス型によつても
よい。 As shown in FIG. 4, the required length of one end of the metal tube 1, which will become the main shaft portion, is gripped with a fixing jig 6, and the required length of the other end of the metal tube 1, which will be the eccentric shaft portion, is gripped with a movable jig. 7, and as shown in FIG. 5, by displacing the movable jig 7 by a required amount in the direction orthogonal to the axis of the metal tube 1, the metal tube 1 is bent at the key point 1a, and the end thereof is bent as required. Make the length eccentric by the required amount. Note that this eccentric processing may be performed using a press die.
ついで、第６図に示すように、鍔板２を、その
傾斜孔４を内側として、金属管１の主軸部の外方
より嵌合し、傾斜孔４内に屈曲部１ａを変位させ
る。 Next, as shown in FIG. 6, the collar plate 2 is fitted from the outside to the main shaft portion of the metal tube 1, with the inclined hole 4 facing inside, and the bent portion 1a is displaced into the inclined hole 4.
ついで、第７図に示すように、対向面に所要の
形状寸法の成形用窪み８，９を備える上下の金型
１０，１１内に、鍔板２を嵌合した金属管１を収
容し、金型１０，１１の一側より、金属管１の主
軸部の外端を経て、金属管１内へ作動油１２を充
満し、適宜の外部操作により、この作動油１２を
加圧する。 Then, as shown in FIG. 7, the metal tube 1 with the collar plate 2 fitted therein is housed in upper and lower molds 10 and 11 having molding depressions 8 and 9 of the required shape and dimensions on opposing surfaces, and Hydraulic oil 12 is filled into metal tube 1 from one side of molds 10 and 11 through the outer end of the main shaft portion of metal tube 1, and this hydraulic oil 12 is pressurized by an appropriate external operation.
なお、金型１０，１１における金属管１の偏心
軸部の外端部には、中心に通孔１３を備える押圧
駒１４が、軸線方向に摺動可能に嵌装されてい
る。 Note that a pressing piece 14 having a through hole 13 in the center is fitted to the outer end of the eccentric shaft portion of the metal tube 1 in the molds 10 and 11 so as to be slidable in the axial direction.
かくして、金属管１の外面は、所要の形状寸法
にバルジ加工されるとともに、その偏心軸部は、
押圧駒１４により軸線方向に押圧されて、屈曲部
１ａは鍔板２の傾斜孔４内へ据え込まれる。 In this way, the outer surface of the metal tube 1 is bulged into the required shape and dimensions, and the eccentric shaft portion is
The bent portion 1a is pressed in the axial direction by the pressing piece 14, and is seated into the inclined hole 4 of the collar plate 2.
これにより、金属管１は、その一部が鍔板２の
受孔３を強圧するとともに、段孔５及び傾斜孔４
内へ食い込むので、鍔板２と確実強固に一体化さ
れる。 As a result, a part of the metal tube 1 presses strongly against the receiving hole 3 of the collar plate 2, and the stepped hole 5 and the inclined hole 4
Since it bites inward, it is reliably and firmly integrated with the collar plate 2.
鍔板２の傾斜孔４の形状及び寸度を選択するこ
とにより、金属管１の偏心軸部の屈曲度を所望に
定めることができるとともに、この屈曲部が鍔板
２の表面より全く外方へ露出させず、両者間に曲
率零の角部を形成させることができる。 By selecting the shape and dimensions of the inclined hole 4 of the collar plate 2, the bending degree of the eccentric shaft portion of the metal tube 1 can be determined as desired, and the bending portion is completely outside the surface of the collar plate 2. A corner with zero curvature can be formed between the two without exposing the two.
また、金属管１の屈曲部１ａは、鍔板２の傾斜
孔４に押されつつ据え込み加工されるので、この
部分の肉厚は増加し、強度的に最も不安のあるこ
の部分は十分に補強され、好都合である。 In addition, since the bent portion 1a of the metal tube 1 is upset while being pressed into the inclined hole 4 of the collar plate 2, the wall thickness of this portion increases, and this portion, which is most unstable in terms of strength, is sufficiently Reinforced and expedient.
図は本発明の実施要領を例示するもので、第１
図は、金属管の縦断正面図、第２図は、鍔板の縦
断正面図、第３図は、鍔板を左方より見た側面
図、第４図は、金属管の一部を偏心加工させるた
めに、金属管に治具を嵌合した状態を示す縦断正
面図、第５図は、第４図の状態から、金属管の一
部を偏心加工した状態を示す縦断正面図、第６図
は、偏心加工された金属管に鍔板を嵌合した状態
を示す縦断正面図、第７図は、第６図に示したも
のをバルジ加工して所望の製品を得た状態を示す
縦断正面図である。
１……金属管、１ａ……屈曲（部）、２……鍔
板、３……受孔、４……傾斜孔、５……段孔、６
……固定治具、７……可動治具、８，９……成形
用窪み、１０，１１……金型、１２……作動油、
１３……通孔、１４……押圧駒。
The figure illustrates the implementation procedure of the present invention.
The figure is a longitudinal sectional front view of the metal tube, Fig. 2 is a longitudinal sectional front view of the collar plate, Fig. 3 is a side view of the flange plate seen from the left, and Fig. 4 shows a part of the metal tube eccentrically. FIG. 5 is a longitudinal sectional front view showing a state in which a jig is fitted to the metal tube for processing, and FIG. Figure 6 is a longitudinal sectional front view showing the state in which the collar plate is fitted to the eccentrically machined metal tube, and Figure 7 shows the state in which the desired product has been obtained by bulging the material shown in Figure 6. FIG. DESCRIPTION OF SYMBOLS 1... Metal tube, 1a... Bend (part), 2... Flange plate, 3... Receiving hole, 4... Inclined hole, 5... Step hole, 6
... fixed jig, 7 ... movable jig, 8, 9 ... recess for molding, 10, 11 ... mold, 12 ... hydraulic oil,
13...Through hole, 14...Press piece.
Claims (1)
屈曲させ、傾斜孔とそれに続く受孔とを備える鍔
板を、その傾斜孔を内側として、金属管の非偏心
部の外方より嵌合して、該傾斜孔内に、前記金属
管の屈曲部を位置させ、しかる後、所要の金型内
において、金属管をバルジ加工することにより、
金属管の外面を所要の形状寸度に成形するととも
に、金属管と鍔板とを一体的に結合させ、かつ金
属管の偏心部を軸線方向に押圧して、前記屈曲部
を鍔板の傾斜孔内に据え込ませることを特徴とす
る冷凍機用クランクシヤフトの製造方法。1. A metal tube is bent at a key point so as to be eccentric with respect to the axis, and a collar plate having an inclined hole and a subsequent receiving hole is fitted from the outside of the non-eccentric part of the metal tube with the inclined hole inside. Then, by positioning the bent part of the metal tube in the inclined hole and then bulging the metal tube in a required mold,
The outer surface of the metal tube is formed into the required shape and dimensions, the metal tube and the collar plate are integrally joined, and the eccentric part of the metal tube is pressed in the axial direction to bend the bent part to the inclination of the collar plate. A method for producing a crankshaft for a refrigerator, which comprises upsetting the crankshaft in a hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9345279A JPS5617127A (en) | 1979-07-23 | 1979-07-23 | Manufacture of crank shaft of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9345279A JPS5617127A (en) | 1979-07-23 | 1979-07-23 | Manufacture of crank shaft of refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5617127A JPS5617127A (en) | 1981-02-18 |
| JPS6239050B2 true JPS6239050B2 (en) | 1987-08-20 |
Family
ID=14082710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9345279A Granted JPS5617127A (en) | 1979-07-23 | 1979-07-23 | Manufacture of crank shaft of refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5617127A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01141979U (en) * | 1988-03-23 | 1989-09-28 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4610298B2 (en) * | 2004-10-29 | 2011-01-12 | 坂本工業株式会社 | Manufacturing method of eccentric tube |
| SE529552C2 (en) * | 2005-12-15 | 2007-09-11 | Hydroforming Design Light Ab | Method for manufacturing a tubular element, and such a tubular element |
-
1979
- 1979-07-23 JP JP9345279A patent/JPS5617127A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01141979U (en) * | 1988-03-23 | 1989-09-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5617127A (en) | 1981-02-18 |
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