JPH0321251B2 - - Google Patents
Info
- Publication number
- JPH0321251B2 JPH0321251B2 JP62330659A JP33065987A JPH0321251B2 JP H0321251 B2 JPH0321251 B2 JP H0321251B2 JP 62330659 A JP62330659 A JP 62330659A JP 33065987 A JP33065987 A JP 33065987A JP H0321251 B2 JPH0321251 B2 JP H0321251B2
- Authority
- JP
- Japan
- Prior art keywords
- connecting shaft
- die plate
- workpiece
- plate
- roughening
- 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
Links
- 238000000034 method Methods 0.000 claims description 25
- 238000007788 roughening Methods 0.000 claims description 23
- 238000005096 rolling process Methods 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 10
- 238000009499 grossing Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 description 18
- 238000005452 bending Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H5/00—Making gear wheels, racks, spline shafts or worms
- B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
- B21H5/027—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls by rolling using reciprocating flat dies, e.g. racks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、被加工物として中央部に大径を有す
る輪キヤスターにおける車輪の連結軸体の外周に
精度が良好な二条の凹溝を一工程で削り屑を生じ
ることなく加工しうるようにした双輪キヤスター
における車輪の連結軸体の加工方法並びにその加
工装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is directed to forming two concave grooves with good precision on the outer periphery of a connecting shaft of a wheel in a wheel caster having a large diameter in the center as a workpiece. The present invention relates to a method of machining a connecting shaft of a wheel in a twin-wheel caster, which can be machined without producing shavings during the process, and a machining device therefor.
第１図に示すような双輪キヤスターにおける２
つの車輪をそれぞれ独自に回転可能に保持するた
めの連結軸体を図示したような形状に加工するに
は、まずあらかじめ中央部分に大径部を設けた軸
体形状に形成し、その後軸体の両端に旋盤を利用
したバイトによる切削加工にて凹溝を加工する方
法や、ローリングマシーンを利用し、間隔をあけ
て配した２枚の略板状体のダイスプレート間に前
記の中央部分に大径部を設けた連結軸体を挟圧保
持した状態で一方のダイスプレートを移動させる
ことによつて軸体を回動させて凹溝を加工する方
法等がある。
2 in a twin-wheel caster as shown in Figure 1.
In order to process the connecting shaft for independently rotating the two wheels into the shape shown in the figure, first form the shaft into a shape with a large diameter section in the center, and then shape the shaft. There is a method of machining a concave groove by cutting with a cutting tool using a lathe on both ends, and a method of machining a groove in the central part between two roughly plate-shaped die plates placed at a distance using a rolling machine. There is a method of machining a concave groove by moving one die plate while holding a connecting shaft provided with a diameter portion under pressure, thereby rotating the shaft.
しかしながら、バイトによる切削加工では二条
の凹溝を加工する場合には工程が複数となつて作
業効率が悪くなるだけでなく、削り屑の発生が問
題となり、又ローリングマシーンを利用したとき
には二条の凹溝を一度に加工でき、削り屑の発生
もないものの、深さの深い凹溝を凹溝の大きさ、
幅、深さ、加工位置を良好な精度のもとに加工す
るのは被加工物として中央部に大径部を有する連
結軸体が略板状体のダイスプレート間で円滑に転
動しないため或いは、加工時に連結軸体が軸方向
にぶれたりするため困難であるという問題があ
る。
However, when cutting with a cutting tool, machining two grooves requires multiple steps, which not only reduces work efficiency, but also causes problems in the generation of shavings, and when using a rolling machine, two grooves Although the grooves can be machined in one go and no shavings are generated, it is possible to process deep grooves by changing the size of the groove.
The reason for machining with good precision in width, depth, and machining position is because the connecting shaft, which has a large diameter part in the center of the workpiece, does not roll smoothly between the approximately plate-shaped die plates. Alternatively, there is a problem in that it is difficult to process because the connecting shaft body may wobble in the axial direction.
とりわけ第１図に示したようなキヤスターの合
成樹脂製の車輪を保持するための軸体にあつて
は、車輪内面側に突設した取付筒内に周設した突
条が連結軸体の凹溝に弾性嵌合して取付けられる
ため比較的深さを保有していることが求められる
が、このローリングマシーンを利用した方法で加
工する凹溝の深さでは到底採用できるものではな
かつた。 In particular, in the case of a shaft body for holding a synthetic resin wheel of a caster as shown in Fig. 1, a protrusion provided around a mounting cylinder protruding from the inner surface of the wheel is inserted into a concave part of the connecting shaft body. Since it is attached by elastically fitting into the groove, it is required to have a relatively deep groove, but the depth of the concave groove machined using this rolling machine is simply not possible.
このような従来の問題点に鑑みて発明されたの
が本発明の双輪キヤスターにおける車輪の連結軸
体の加工方法並びにその加工装置であつて、被加
工物における連結軸体の小径部の外周に二条の凹
溝を一度に加工でき、且つ削り屑も発生しないロ
ーリングマシーンを利用した加工方法において、
深さの深い凹溝であつて大きさ、幅、深さ、加工
位置を精度を良好にして加工しうるようにするこ
とを目的とする。 In view of these conventional problems, the present invention provides a method for machining a connecting shaft of a wheel in a twin-wheel caster, and a processing device therefor. In a processing method using a rolling machine that can process two grooves at once and does not generate shavings,
It is an object of the present invention to provide a deep concave groove that can be machined with good precision in size, width, depth, and machining position.
かかる目的を達成するため、本発明の第１は、
間隔をあけて配した被加工物の表面に加工を施す
ダイスプレートと板状体の加工時に被加工物を支
持する支持プレートの間に被加工物として中央部
に大径部を有する連結軸体を挟圧保持した状態で
ダイスプレートを支持プレートに対して相対的に
移動させて被加工物を加工する際し、該ダイスプ
レートの略中央に移動方向全長にわたつて設けた
凹条に連結軸体の大径部を内装して該連結軸体を
案内させた状態で連結軸体の大径部両側の小径部
表面にダイスプレートの移動方向の一側側に設け
た粗面加工部で粗面加工をして連結軸体の転動を
円滑にしながら、連結軸体における小径部の粗面
加工部外側の両先端部の外周に凹溝加工をし、そ
の後連結軸体の小径部表面に形成された前記粗面
をダイスプレートの移動方向の他側側に設けた復
元用突部に圧接させてもとの表面状態に復元して
なる双輪キヤスターにおける車輪の連結軸体の加
工方法を、又本発明の第２は、中央部に大径部を
有する連結軸体を被加工物としてその表面に加工
を施すダイスプレートと板状体の加工時に被加工
物を支持する支持ブレートを間隔をあけ、しかも
ダイスプレートを支持プレートに対して相対的に
移動可能としてダイスプレートと支持プレートの
間に被加工物を挟圧保持した状態での加工空間と
するとともに、ダイスプレートを支持プレートと
対面する内面側の略中央部に移動方向全長にわた
つて、連結軸体の大径部を内装する凹条を設け、
連結軸体の大径部両側の小径部の先端部に凹溝を
加工すべく該凹溝に対応する位置関係に移動方向
にわたる二条の突条を設け、該突条と凹溝の間に
は該突条と平行方向に連結軸体の小径部表面に粗
面加工をするための該突条に直交する直線状の切
り刃を多数間隔をあけて立設してなる粗面加工用
突部を配設し、且つダイスプレートの内面側であ
つて移動方向の他側側の前記一側側に設けた粗面
加工用突部に対応する部位には表面が平坦な連結
軸体の小径部の粗面加工部分をもとの表面状態に
復元するための復元用突部を設けてなる双輪キヤ
スターにおける車輪の連結軸体の加工装置を提供
せんとするにある。
In order to achieve such an objective, the first aspect of the present invention is to:
A connecting shaft body with a large diameter portion in the center serves as a workpiece between die plates arranged at intervals to process the surface of the workpiece and a support plate that supports the workpiece during processing of a plate-shaped object. When processing a workpiece by moving the die plate relative to the support plate while holding the die plate under pressure, a connecting shaft is attached to a concave line provided approximately in the center of the die plate over the entire length in the direction of movement. With the large diameter part of the body inside and the connecting shaft guided, the surface of the small diameter part on both sides of the large diameter part of the connecting shaft is roughened with a roughened part provided on one side in the moving direction of the die plate. While performing surface machining to smooth the rolling of the connecting shaft, grooves are machined on the outer periphery of both tips on the outside of the roughened part of the small diameter part of the connecting shaft, and then on the surface of the small diameter part of the connecting shaft. A method for processing a connecting shaft of a wheel in a twin-wheeled caster, in which the formed rough surface is brought into pressure contact with a restoring protrusion provided on the other side of the moving direction of the die plate to restore the original surface state. The second aspect of the present invention is to use a connecting shaft having a large diameter portion in the center as a workpiece, and to separate a die plate that processes the surface of the workpiece and a support plate that supports the workpiece during machining of the plate-shaped body. In addition, the die plate is movable relative to the support plate to create a processing space in which the workpiece is held under pressure between the die plate and the support plate, and the die plate faces the support plate. A concave line is provided at approximately the center of the inner surface side over the entire length in the direction of movement, and accommodates the large diameter part of the connecting shaft body.
In order to machine a concave groove at the tip of the small diameter part on both sides of the large diameter part of the connecting shaft body, two protrusions extending in the moving direction are provided in a positional relationship corresponding to the concave groove, and between the protrusion and the concave groove. A protrusion for surface roughening comprising a large number of linear cutting blades perpendicular to the protrusion, arranged at intervals for roughening the surface of the small diameter portion of the connecting shaft in a direction parallel to the protrusion. and a small diameter portion of the connecting shaft body with a flat surface at a portion corresponding to the surface roughening protrusion provided on the one side on the inner side of the die plate and on the other side in the moving direction. It is an object of the present invention to provide a processing device for a connecting shaft of a wheel in a twin-wheel caster, which is provided with a restoring protrusion for restoring the roughened portion of the wheel to its original surface condition.
しかして、前記した加工装置をローリングマシ
ーンに設置し、ローリングマシーンを駆動してダ
イスプレートの略中央に移動方向全長にわたつて
設けた凹条に連結軸体の大径部を内装して該連結
軸体を案内させた状態でダイスプレートの粗面加
工用突部を設けた移動方向における一側側に支持
プレートの移動方向における側端が一部重合する
位置関係でダイスプレートと支持プレートの間に
凹溝を加工すべく被加工物として中央部に大径部
を有する連結軸体を挟圧保持し、この状態のまま
ダイスプレートをダイスプレートに対して完全に
重合する方向に移動させ、このダイスプレートの
移動する間のダイスプレートと支持プレート間に
おいて、まずダイスプレートの粗面加工部である
粗面加工用突部により連結軸体表面に粗面加工を
することで摩擦力を付与して連結軸体の転動を円
滑にしながらダイスプレートの二条の突条により
凹溝を連結軸体の大径部両側の小径部の先端部の
外周に加工し、その後連結軸体の小径部表面の前
記粗面に復元用突部を押しあててもとの表面状態
に復元し、連結軸体の外周に凹溝を加工するもの
である。
The processing device described above is installed in a rolling machine, and the rolling machine is driven to insert the large diameter portion of the connecting shaft body into the concave line provided approximately in the center of the die plate over the entire length in the direction of movement. Between the die plate and the support plate in a positional relationship such that the side edge of the support plate in the movement direction partially overlaps one side in the movement direction where the protrusion for surface roughening of the die plate is provided while the shaft body is guided. In order to machine a concave groove, a connecting shaft body having a large diameter part in the center is held under pressure as a workpiece, and in this state, the die plate is moved in a direction where it completely overlaps with the die plate. Between the die plate and the support plate while the die plate is moving, frictional force is first applied by roughening the surface of the connecting shaft using the roughening protrusion, which is the roughening part of the die plate. While smoothing the rolling motion of the connecting shaft, grooves are formed on the outer periphery of the tips of the small diameter portions on both sides of the large diameter portion of the connecting shaft using two protrusions on the die plate, and then grooves are formed on the outer periphery of the tips of the small diameter portions on both sides of the large diameter portion of the connecting shaft. A restoring protrusion is pressed against the rough surface to restore the original surface condition, and a groove is formed on the outer periphery of the connecting shaft.
本発明の双輪キヤスターにおける車輪の連結軸
体の加工方法について、その加工装置をもとにし
て更に詳細に説明する。
The method of machining the connecting shaft of the wheels in the twin-wheel caster of the present invention will be explained in more detail based on the machining device.
実施例では、第１図に示すような双輪キヤスタ
ー１における２つの車輪２，２をそれぞれ独自に
回転可能に保持するための連結軸体３を軸体状の
被加工物から図示したような形状に加工する場合
を想定して以下順に説明する。 In the embodiment, a connecting shaft 3 for independently rotatably holding two wheels 2, 2 in a twin-wheel caster 1 as shown in FIG. The explanation will be given below in order, assuming that the process is to be processed.
まず、被加工物として第２図イに示すような中
央部分に大径部４を適宜な加工方法により設けた
連結軸体３をあらかじめ準備し、このような連結
軸体３の小径部５の端部に凹溝６を、その小径部
５の凹溝６より大径部４側に軸心方向の切り溝７
を刻設する粗面加工をすることにより粗面加工部
分を形成し、摩擦力を付与しながら加工し、その
後連結軸体３表面の前記切り溝７をもとの第２図
(イ)に示す連結軸体３表面状態に復元して、第２図
ハに示すような連結軸体３を加工するものであ
る。 First, as a workpiece, a connecting shaft 3 with a large diameter portion 4 provided in the center by an appropriate processing method as shown in FIG. 2A is prepared in advance, and the small diameter portion 5 of such a connecting shaft 3 is A concave groove 6 is formed at the end, and a cut groove 7 in the axial direction is formed on the side of the large diameter part 4 from the concave groove 6 of the small diameter part 5.
A roughened surface is formed by roughening the surface by engraving it, and the surface is machined while applying frictional force, and then the cut groove 7 on the surface of the connecting shaft body 3 is restored to the original shape shown in FIG. 2.
The surface state of the connecting shaft body 3 shown in (a) is restored and the connecting shaft body 3 as shown in FIG. 2 (c) is processed.
そして、このような連結軸体３を加工する加工
装置は第３，４図に示すように中央部に大径部４
を有する連結軸体３を被加工物としての表面に加
工を施すダイスプレート８と板状体の加工時に被
加工物を支持する支持プレート９を間隔をあけ、
しかもダイスプレート８を支持プレート９に対し
相対的に移動可能にローリングマシーンに設置し
て構成され、ダイスプレート８と支持プレート９
の間を連結軸体３の被加工物を挟圧保持した状態
での加工空間とするものであつて、このダイスプ
レート８と支持プレート９の間に第２図イに示す
連結軸体３を挿入し、ダイスプレート８を支持プ
レート９に対して相対的に移動させることにより
連結軸体３を挟圧保持した状態で転動させて加工
するものである。 The processing device for processing such a connecting shaft body 3 has a large diameter portion 4 in the center as shown in FIGS. 3 and 4.
A die plate 8 for processing the surface of the connecting shaft body 3 as a workpiece and a support plate 9 for supporting the workpiece during processing of the plate-shaped body are spaced apart from each other.
Moreover, the die plate 8 is installed on a rolling machine so as to be movable relative to the support plate 9, and the die plate 8 and the support plate 9
Between the die plate 8 and the support plate 9, the connecting shaft 3 shown in FIG. 2A is installed. By inserting the die plate 8 and moving the die plate 8 relative to the support plate 9, the connecting shaft body 3 is rolled and processed while being held under pressure.
ここで、図中８として示されるダイスプレート
８の支持プレート９と対面する内面側の移動方向
に沿つた中央部分には被加工物としての連結軸体
３の大径部４を内装する凹条１０を基材を屈曲し
て移動方向全長にわたつて設け、同じく内面側の
該凹条１０両側のほぼ全体には連結軸体３の外周
所定位置に二条の凹溝６を形成すべく該凹溝６に
対応する位置関係に移動方向にわたる突条１１，
１１をそれぞれ基材を屈曲して設けるとともに、
同じく内面側の移動方向一側の突条１１と凹条１
０間には連結軸体３表面に切り溝７を刻設するた
めの該突条１１に直交する直線状の切り刃１２を
多数間隔をあけて立設してなる粗面加工部１３と
しての、粗面加工用突部１３′を突条１１と平行
方向に配設し、しかも他側の粗面加工用突部１
３′に対応する部位には表面が平坦な連結軸体３
の粗面加工をもとの表面状態に復元するための復
元用突部１４を基材を屈曲して設けている。 Here, in the center portion along the movement direction of the inner surface of the die plate 8 shown as 8 in the figure, which faces the support plate 9, there is a concave groove in which the large diameter portion 4 of the connecting shaft body 3 as the workpiece is accommodated. 10 is provided by bending the base material over the entire length in the moving direction, and the grooves 10 on the inner surface side are formed almost entirely on both sides to form two grooves 6 at predetermined positions on the outer periphery of the connecting shaft body 3. a protrusion 11 extending in the moving direction in a positional relationship corresponding to the groove 6;
11 by bending the base material, and
Similarly, protrusions 11 and grooves 1 on one side in the movement direction on the inner surface side
As a roughened surface processing part 13, a large number of straight cutting blades 12 perpendicular to the protrusions 11 are vertically provided at intervals for carving cut grooves 7 on the surface of the connecting shaft 3. , the roughening protrusion 13' is arranged parallel to the protrusion 11, and the roughening protrusion 1 on the other side is arranged parallel to the protrusion 11.
At the part corresponding to 3', there is a connecting shaft 3 with a flat surface.
A restoring protrusion 14 for restoring the roughened surface to the original surface condition is provided by bending the base material.
しかして、このようなダイスプレート８と支持
プレート９を用いて連結軸体３を加工するには、
ローリングマシーンを駆動して第３図に示すよう
にダイスプレート８の粗面加工部１３としての粗
面加工用突部１３′を設けた移動方向における一
側側に支持プレート９の側端が一部重合する位置
関係でダイスプレート８と支持プレート９の間に
凹溝６を加工すべく第２図イに示すような連結軸
体３を挟圧保持し、ダイスプレート８の凹条１０
に連結軸体３の大径部４を内装して該連結軸体３
を案内させた状態で支持プレート９を第３図中印
印で示す方向即ちダイスプレート８に対して完全
に重合する方向に移動させるか、又は逆にダイス
プレート８を支持プレート９に対して完全に重合
する方向に移動させ、このダイスプレート８、支
持プレート９の移動にする間のダイスプレート
８、支持プレート９間において、まず連結軸体３
表面の軸心方向に切り刃１２によつて切り溝７を
刻設する粗面加工をすることで摩擦力を付与して
連結軸体３の転動を円滑にしながら凹溝６を連結
軸体３の外周に加工して第２図(ロ)に示すような連
結軸体３形状に形成し、その後連結軸体３表面の
粗面加工部分の前記切り溝７に復元用突部１４を
押しあてて第２図イに示す表面状態に復元して第
２図ハに示すような連結軸体３に加工するもので
ある。 Therefore, in order to process the connecting shaft body 3 using such a die plate 8 and support plate 9,
By driving the rolling machine, as shown in FIG. 3, the side end of the support plate 9 is placed on one side in the moving direction in which the roughening protrusion 13' as the roughening part 13 of the die plate 8 is provided. In order to machine the groove 6 between the die plate 8 and the support plate 9 in a positional relationship where they partially overlap, the connecting shaft 3 as shown in FIG. 2A is held under pressure, and the groove 10 of the die plate 8 is
The large diameter portion 4 of the connecting shaft 3 is installed inside the connecting shaft 3.
While guiding the support plate 9, move it in the direction shown by the mark in FIG. During the movement of the die plate 8 and the support plate 9, between the die plate 8 and the support plate 9, first, the connecting shaft body 3
By roughening the surface by carving cut grooves 7 in the axial direction of the surface with a cutting blade 12, frictional force is applied and the concave grooves 6 are formed on the connecting shaft while smoothing the rolling motion of the connecting shaft 3. 3 to form the shape of the connecting shaft 3 as shown in FIG. The surface is restored to the surface state shown in FIG. 2A, and then processed into the connecting shaft body 3 as shown in FIG. 2C.
そして、このような方法によれば連結軸体３小
径部５の外径が７mmのものに対し、0.75mmの深さ
の凹溝６を連結軸体３の外周に設けることが可能
となつたのである。 According to this method, it has become possible to provide a concave groove 6 with a depth of 0.75 mm on the outer periphery of the connecting shaft 3 when the outer diameter of the small diameter portion 5 of the connecting shaft 3 is 7 mm. It is.
第３図において、連結軸体３に凹溝６を形成す
るために一方のダイスプレート８に設ける突条１
１，１１は少なくとも粗面加工用突部１３′と重
合する移動方向における一側にのみ設けてもよい
のである。 In FIG. 3, a protrusion 1 is provided on one die plate 8 to form a groove 6 on the connecting shaft body 3.
1 and 11 may be provided only on one side in the direction of movement that overlaps at least the surface roughening protrusion 13'.
又、図示した実施例にかかわらず粗面加工とし
ては他にローレツト加工やその他任意の適度な摩
擦力が付与されるような加工方法を採用すること
ができる。 In addition, regardless of the illustrated embodiment, other methods such as knurling or other processing that imparts an appropriate frictional force may be employed as the surface roughening.
以上のようになる本発明の双輪キヤスターにお
ける車輪の連結軸体の加工方法並びにその加工装
置にあつては、ダイスプレートと支持プレート
の間に被加工物として中央に大径部を有する連結
部材をダイスプレートの凹条に連結軸体の大径部
を内装させて挟圧保持して、該連結軸体を案内さ
せ且つ被加工物としての連結軸体の大径部両側の
小径部表面にダイスプレートの移動方向の一側側
に設けた粗面加工部である粗面加工用突部により
粗面加工をすることで摩擦力を付与して連結軸体
の転動を円滑にしながら連結軸体における小径部
の前記粗面加工部分の外側の両先端部の外周に凹
溝加工をするため、加工時に連結軸体が大径部と
その両側外側の粗面加工部分で確実に保持されて
軸方向にぶれたり、連結軸体が滑ることなく、深
さの深い凹溝であつても凹溝の大きさ、幅、深
さ、加工位置を確実に且つ精度の良好な状態にし
て加工することができる。
In the method and apparatus for processing a connecting shaft of a wheel in a twin-wheel caster according to the present invention as described above, a connecting member having a large diameter portion in the center is provided between a die plate and a support plate as a workpiece. The large diameter part of the connecting shaft is placed inside the concave groove of the die plate and held under pressure, and the connecting shaft is guided and the die is placed on the surface of the small diameter part on both sides of the large diameter part of the connecting shaft as a workpiece. The roughening protrusion, which is a roughening part provided on one side in the direction of movement of the plate, applies a frictional force to the connecting shaft to smooth the rolling motion of the connecting shaft. Since concave grooves are machined on the outer periphery of both tips on the outside of the roughened portion of the small diameter portion, the connecting shaft is securely held by the large diameter portion and the roughened portions on both sides of the shaft during machining. To process even deep grooves by ensuring that the size, width, depth, and machining position of the grooves are correct and accurate without wobbling in the direction or slipping of the connecting shaft body. Can be done.
しかも、ダイスブレートの移動方向の他側側
に復元用突部を設けているため、連続して連結軸
体の小径部の粗面加工部をもとの表面状態に復元
するこができるので、小径部の表面が滑らかであ
ることを要求される双輪キヤスターにおける車輪
の連結軸体であつても一公定でかつ簡単に製造す
ることができる。 Moreover, since the restoring protrusion is provided on the other side in the moving direction of the die plate, it is possible to continuously restore the roughened part of the small diameter part of the connecting shaft to its original surface condition. Even a wheel connection shaft in a twin-wheel caster, which requires a smooth surface on the small diameter portion, can be easily manufactured using one standard.
また、連結軸体の表面に加工を施すダイスプ
レートと板状体の加工時に被加工物を支持する支
持プレートを用いて、ダイスプレートの凹溝に連
結軸体の大径部を内装させた状態で支持プレート
により連結軸体の大径部を挟圧保持するため、同
じダイスプレートを２枚用いる場合に比べて、両
者のダイスプレートの精度及び取付け精度を高く
する必要がなく、容易に加工を行うことができる
とともに連結軸体に対して均一な圧力をかけるこ
とができるので、より深さの深い凹溝であつても
凹溝の大きさ、幅、深さ、加工位置を確実に且つ
精度の良好な状態にして加工することができ、し
かも一方が板状の支持プレートであるのでコスト
が安く済むとともにメンテナンスも容易になる。 In addition, a die plate that processes the surface of the connecting shaft and a support plate that supports the workpiece during processing of the plate-shaped object are used, and the large diameter part of the connecting shaft is placed inside the groove of the die plate. Since the large diameter part of the connecting shaft body is held under pressure by the support plate, there is no need to increase the accuracy and installation accuracy of both die plates compared to when using two of the same die plate, making processing easier. It is possible to apply uniform pressure to the connecting shaft, so even if the groove is deeper, the size, width, depth, and machining position of the groove can be accurately and precisely determined. It can be processed in a good condition, and since one side is a plate-shaped support plate, the cost is low and maintenance is easy.
更に、この方法で加工される凹溝は外の部分
より組織が緻密となつて、この部分に回動力や摩
擦力がとりわけ付加されるような双輪キヤスター
における車輪の連結軸体の加工に適するものであ
る。 Furthermore, the concave groove machined by this method has a denser structure than the outer part, making it suitable for machining the connecting shaft of a wheel in a twin-wheel caster, where rotational force and frictional force are particularly applied to this part. It is.
また、ダイスプレートにおける粗面加工突部
として、突条に直交する直線状の切り刃を多数間
隔をあけて立設したものを用いているので、滑る
ことなく、粗面加工をして連結軸体の転動を行な
うことができる。 In addition, as the roughened protrusions on the die plate, we use a large number of linear cutting blades perpendicular to the protrusions, spaced apart, so that the connecting shaft can be roughened without slipping. Can perform body rolls.
第１図は双輪キヤスターの縦断面図、第２図
イロハは連結軸体の加工順序を示す説明図、第３
図は本発明の加工方法を具体化すべく加工装置の
説明図、第４図は同じく拡大断面図である。
１：双輪キヤスター、２：車輪、３：連結軸
体、４：大径部、５：小径部、６：凹溝、７：切
り溝、８：ダイスプレート、９：支持プレート、
１０：凹条、１１：突条、１２：切り刃、１３：
粗面加工部、１３：粗面加工用突部、１４：復元
用突部。
Figure 1 is a vertical cross-sectional view of a twin-wheel caster, Figure 2
The ABCs are explanatory diagrams showing the processing order of the connecting shaft body, and the third
The figure is an explanatory diagram of a processing apparatus for embodying the processing method of the present invention, and FIG. 4 is an enlarged sectional view. 1: Twin wheel caster, 2: Wheel, 3: Connecting shaft body, 4: Large diameter part, 5: Small diameter part, 6: Concave groove, 7: Cut groove, 8: Die plate, 9: Support plate,
10: Recessed line, 11: Protruding line, 12: Cutting edge, 13:
Rough surface processing portion, 13: protrusion for rough surface processing, 14: protrusion for restoration.
Claims (1)
施すダイスプレートと板状体の加工時に被加工物
を支持する支持プレートの間に被加工物として中
央部に大径部を有する連結軸体を挾圧保持した状
態でダイスプレートを支持プレートに対して相対
的に移動させて被加工物を加工するに際し、該ダ
イスプレートの略中央に移動方向全長にわたつて
設けた凹条に連結軸体の大径部を内装して該連結
軸体を案内させた状態で連結軸体の大径部両側の
小径部表面にダイスプレートの移動方向の一側側
に設けた粗面加工部で粗面加工をして連結軸体の
転動を円滑にしながら、連結軸体における小径部
の粗面加工部外側の両先端部の外周に凹溝加工を
し、その後連結軸体の小径部表面に形成された前
記粗面をダイスプレートの移動方向の他側側に設
けた復元用突部に圧接させてもとの表面状態に復
元してなる双輪キヤスターにおける車輪の連結軸
体の加工方法。 ２ 中央部に大径部を有する連結軸体を被加工物
としてその表面に加工を施すダイスプレートと板
状体の加工時に被加工物を支持する支持プレート
を間隔をあけ、しかもダイスプレートを支持プレ
ートに対して相対的に移動可能としてダイスプレ
ートと支持プレートの間に被加工物を挟圧保持し
た状態での加工空間とするとともに、ダイスプレ
ートの支持プレートと対面する内面側の略中央部
に移動方向全長にわたつて、連結軸体の大径部を
内装する凹条を設け、連結軸体の大径部両側の小
径部の先端部に凹溝を加工すべく該凹溝に対応す
る位置関係に移動方向にわたる二条の突条を設
け、該突条と凹溝の間には該突条と平行方向に連
結軸体の小径部表面に粗面加工をするための該突
条に直交する直線状の切り刃を多数間隔をあけて
立設してなる粗面加工用突部を配設し、且つダイ
スプレートの内面側であつて移動方向の他側側の
前記一側側に設けた粗面加工用突部に対応する部
位には表面が平坦な連結軸体の小径部の粗面加工
部分をもとの表面状態に復元するための復元用突
部を設けてなる双輪キヤスターにおける車輪の連
結軸体の加工装置。[Claims] 1. A large piece of workpiece is placed in the center between die plates arranged at intervals to process the surface of the workpiece and a support plate that supports the workpiece during processing of the plate-shaped object. When processing a workpiece by moving the die plate relative to the support plate while holding the connecting shaft body having a diameter portion under clamping pressure, a The large diameter portion of the connecting shaft is placed inside the concave groove, and the connecting shaft is guided. While smoothing the rolling of the connecting shaft by roughening it in the roughening section, grooves are machined on the outer periphery of both tips outside the roughening section of the small diameter section of the connecting shaft, and then the connecting shaft is A connecting shaft of a wheel in a twin-wheeled caster in which the rough surface formed on the surface of the small diameter portion of the body is pressed against a restoring protrusion provided on the other side in the moving direction of the die plate to restore the original surface state. How to process the body. 2. A die plate that processes the surface of a connecting shaft body having a large diameter portion in the center is spaced apart from a support plate that supports the workpiece during processing of the plate-shaped object, and also supports the die plate. The workpiece is held between the die plate and the support plate so as to be movable relative to the plate, and the workpiece is held under pressure. A groove is provided inside the large diameter part of the connecting shaft over the entire length of the moving direction, and a groove is machined at the tip of the small diameter part on both sides of the large diameter part of the connecting shaft at a position corresponding to the groove. Two protrusions extending in the moving direction are provided in the relationship, and between the protrusions and the groove, the protrusions are perpendicular to the protrusions for roughening the surface of the small diameter portion of the connecting shaft in a direction parallel to the protrusions. A protrusion for roughening, which is made up of a large number of straight cutting blades erected at intervals, is provided on the inner surface of the die plate and on the other side of the moving direction. A wheel for a twin-wheel caster, in which a restoring protrusion is provided at a portion corresponding to the roughening protrusion for restoring the roughened part of the small diameter part of the connecting shaft with a flat surface to its original surface condition. A processing device for connecting shaft bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62330659A JPH01170541A (en) | 1987-12-25 | 1987-12-25 | Method and device for working shaft body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62330659A JPH01170541A (en) | 1987-12-25 | 1987-12-25 | Method and device for working shaft body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01170541A JPH01170541A (en) | 1989-07-05 |
| JPH0321251B2 true JPH0321251B2 (en) | 1991-03-22 |
Family
ID=18235146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62330659A Granted JPH01170541A (en) | 1987-12-25 | 1987-12-25 | Method and device for working shaft body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01170541A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5611123A (en) * | 1979-07-06 | 1981-02-04 | Utsunomiya Rashi Kk | Method and apparatus for thread rolling |
| JPS5890342A (en) * | 1981-11-24 | 1983-05-30 | Morioka Sangyo Kk | Working method for groove for snap ring of pin and flat die for working |
-
1987
- 1987-12-25 JP JP62330659A patent/JPH01170541A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5611123A (en) * | 1979-07-06 | 1981-02-04 | Utsunomiya Rashi Kk | Method and apparatus for thread rolling |
| JPS5890342A (en) * | 1981-11-24 | 1983-05-30 | Morioka Sangyo Kk | Working method for groove for snap ring of pin and flat die for working |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01170541A (en) | 1989-07-05 |
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