JPS6025299Y2 - Pressure correction disc - Google Patents

Description

【考案の詳細な説明】 本考案は、例えば、引抜線材の外周面を真直・真円にし
たり、あるいは、琢磨する場合等に使用する加圧矯正円
盤の改良に関するもので、特に被加工物の引抜線材と、
接触する部分を超硬合金とし、台金を一般鋼材で形成し
た加圧矯正円盤に係るものである。[Detailed description of the invention] The present invention relates to the improvement of a pressurized straightening disk used, for example, to make the outer circumferential surface of a drawn wire rod straight and perfect circle, or to polish it. A drawn wire rod,
This relates to a pressure straightening disk in which the contacting part is made of cemented carbide and the base metal is made of general steel.

従来、加圧矯正円盤には次のようなものがある。Conventionally, there are the following pressurized correction discs.

（イ）全体を超硬合金で形成したもの。(a) One made entirely of cemented carbide.

（ロ）被加工物と接触する部分とその近傍を超硬合金で
形成し他の構成部材即ち合金をデ般鋼材で構成したもの
。(b) The part that contacts the workpiece and its vicinity are made of cemented carbide, and the other components, that is, the alloy, are made of general steel.

等があり、上記０項に属するもの）超硬合金と鋼材の取
付手段は次のような種類がある。(Those belonging to item 0 above) There are the following types of means for attaching cemented carbide and steel materials.

ａ 超硬合金で形成された部分を銀ロウまたは銅ロウ付
は等により鋼材の合金にロウ着したもの。a. Parts made of cemented carbide are brazed to a steel alloy using silver or copper brazing.

□・ｂ 超硬合金で形成された部材に廻り止め手段を要
所に設け、かつ合金の鋼材を−、５０℃〜−７０℃に冷
却して冷し嵌めに〒体的に固定したもの。□・b A member made of cemented carbide is provided with anti-rotation means at important points, and the alloy steel is cooled to -50°C to -70°C and physically fixed by cold fitting.

等が知られている。etc. are known.

しかし以上の従来型のものにおいて上記イ項のものは耐
摩耗性・、機械的強度から：考えれば使用上非常に良い
結、果が得られるが、周知の如く超硬合金は鋼材に比べ
て鋼材の比重が７．８Ｅｌ ｆｉｌに対し超硬合金の比
重は１５ｇ／Ｃ１ｌ！と約二倍である、しかも加圧矯正
円盤は非常に高速回転で作業をするために重量が大であ
ると回転時における遠心力の作用が非常に大きく作用す
るために事故発生による破損で危険度が大きい事と超硬
合金は鋼材に比べて硬度が硬く各種の所望する機械加工
が容易にできないこと、さらに超硬合金は鋼材に比べて
非常に高価な材料でもあるので上記と相俟ってコスト的
に好ましいものではない等の諸問題を有している。However, in terms of wear resistance and mechanical strength, among the conventional types mentioned above, the one in item (a) provides very good results in terms of use, but as is well known, cemented carbide is inferior to steel. The specific gravity of steel is 7.8El fil, while the specific gravity of cemented carbide is 15g/Cl! In addition, pressurized straightening disks rotate at very high speeds, so if they are heavy, the centrifugal force during rotation will be very strong, making it dangerous to break due to accidents. Combined with the above, the hardness of cemented carbide is higher than that of steel, making it difficult to perform various desired machining processes, and cemented carbide is also a much more expensive material than steel. However, it has various problems such as not being cost-effective.

。マタ、（ロ）項のａに示したものについてはロ
ウ付強度が約２０ｋｏ／ｒｒｕＭと低い上に熱膨張係数
が超硬合金は約、５．５Ｘ １０−’／°Ｃ，これに対
し鋼材の熱膨張係数が約１１ Ｘ １０−’／℃と約２
倍位の差があり、ワ・つ付作業時約７００℃前後の温度
を加え、ロウ付作業完了後常温に戻した場合残留応力を
完全に除去することができず、このま）の状態で加工時
加圧矯正円盤に被加工物よりの力を受けると、この残留
応力を相乗して破損し易い不安定な状態で使用され安全
上好ましいものとはいえない。. Regarding the materials shown in item (b) a, the brazing strength is as low as approximately 20 ko/rruM, and the thermal expansion coefficient of cemented carbide is approximately 5.5X 10-'/°C, whereas steel The coefficient of thermal expansion is approximately 11 x 10-'/°C and approximately 2
There is a double difference in temperature, and if a temperature of around 700°C is applied during the brazing work and the temperature is returned to room temperature after the brazing work is completed, the residual stress cannot be completely removed, and the condition remains as it is. When the pressurized straightening disk is subjected to force from the workpiece during processing, this residual stress is compounded and the disk is used in an unstable state where it is likely to break, which is not desirable from a safety standpoint.

さらに（ロ）項すのものに於いては鋼材の合金と超硬合
金製円盤の空回転を防止するために、超硬合金製円盤と
鋼製の合金の所定位置の回周面に複数個の穴を穿設せし
め、該合金を一５０°Ｃ〜−７０℃に冷却して冷し嵌め
後該ノックピンを挿入して構成したものは加圧矯正円盤
が高速回転すると同時に引抜線材より受ける作用応力に
よって超硬合金側に穿設したピン穴の部分より応力が形
状効果の点より集中して割れが発生し加圧矯正円盤の破
壊につながる点があった。Furthermore, in the case of (b) above, in order to prevent the steel alloy and the cemented carbide disc from idling, a plurality of them are installed on the rotating surfaces of the cemented carbide disc and the steel alloy at predetermined positions. A hole is drilled in the alloy, the alloy is cooled to -50°C to -70°C, the knock pin is inserted after cold fitting, and the pressurized straightening disk is rotated at high speed and at the same time is subjected to the action of the drawn wire. There was a point where the stress concentrated at the pin hole drilled in the cemented carbide side due to the shape effect, causing cracks and leading to the destruction of the pressurized straightening disk.

本考案は上記した従来の加圧矯正円盤がもっていた諸問
題点を改善することによってロウ付は部分がはずれると
いう事故の少ない、かつ超硬合金の形状効果による割れ
の発生がない長寿命の加圧矯正円盤を提供することを目
的とするものである。The present invention improves the problems of the conventional pressurized straightening disks mentioned above, thereby reducing the chance of parts coming off during brazing, and providing long-life brazing without the occurrence of cracks due to the shape effect of the cemented carbide. The object of the present invention is to provide a compression correction disk.

本考案は、加圧矯正作用面を超硬合金とし、これを受け
る合金が鋼材製から成る引抜材料の外周面を真直・真円
にしたり、あるいは琢磨したりする加圧矯正円盤におい
て、前記台金の凹部に起硬環盤を焼き嵌めまたは圧入等
によって嵌入し、合金の平面と該環盤の上面を面一また
は環盤の上面を該平面より突出させて形成し、しかる後
超硬円盤の底面を上記上面と平面上に載置し銀ロウまた
は銅ロウ付けによって固着したことを特徴とする加圧矯
正円盤である。The present invention provides a pressurized straightening disk in which the pressurized straightening surface is made of cemented carbide, and the outer peripheral surface of a drawn material made of steel is made straight, perfectly round, or polished. A hardened ring disk is fitted into the recessed part of the gold by shrink fitting or press fitting, and the plane of the alloy and the upper surface of the ring disk are flush with each other, or the upper surface of the ring disk is formed to protrude from the plane, and then a carbide disk is formed. This pressurized straightening disk is characterized in that the bottom surface of the disk is placed on a plane with the top surface and fixed by silver soldering or copper soldering.

以下、本考案の実施例を添付した図面に基づいて説明す
る。Embodiments of the present invention will be described below with reference to the accompanying drawings.

第１図から第６図に於いて、１の超硬合金製の円盤は、
その中央部にブツシュ遊嵌用穴１１と、この穴１１を基
準に外開きのテーパー面１２と底面１３と政商１２の終
端から曲線で結合した上面１４と外周１５により形成さ
れている。In Figures 1 to 6, the cemented carbide disk 1 is
It is formed by a bushing loose fitting hole 11 in its center, a tapered surface 12 opening outward from the hole 11, a bottom surface 13, an upper surface 14 connected by a curve from the terminal end of the political merchant 12, and an outer periphery 15.

なお、上面１４は加工物と接触する加工面となるので加
工物の形態に合せ外周１５側下りとなる滑らかな傘形状
となし、この形状は外周１５で曲線と直線で結ばれてい
る。Since the upper surface 14 becomes a processing surface that comes into contact with the workpiece, it has a smooth umbrella shape that slopes downward toward the outer periphery 15 in accordance with the shape of the workpiece, and this shape is connected by a curved line and a straight line at the outer periphery 15.

また、加工物と接触する面１４は精度の高い仕上げをお
こなう方が加工物の表面を美麗に仕上るので好ましい。Further, it is preferable that the surface 14 that comes into contact with the workpiece be finished with high precision because the surface of the workpiece will be beautifully finished.

２の超硬環盤は、中央部にブツシュを遊嵌する穴２１と
底面２２と上面２３と外周２４から戒っている。The carbide ring disk No. 2 has a hole 21 in which the bushing is loosely fitted in the center, a bottom surface 22, a top surface 23, and an outer periphery 24.

また、この超硬環盤２は後述する鋼製の合金の凹部に焼
き嵌めまたは圧入により嵌入するので外周２４は圧入代
あるいは焼き嵌め代を見込んで形成されるものである。Further, since this cemented carbide ring disc 2 is fitted into a recessed portion of a steel alloy, which will be described later, by shrink fitting or press fitting, the outer periphery 24 is formed with an allowance for press fitting or shrink fitting.

なお、好ましい方法は前記した超硬円盤１が耐摩耗性、
耐欠損性等に富んだ超硬材種のものを用いなければなら
ないのに対し、超硬環盤２はこれらの特性を気にするこ
となく熱膨張、熱収縮が該円盤と略同−ということのみ
を考慮して材種の選定をすればよいので比較的にコスト
の安いものが使用可能となる。In addition, a preferable method is that the above-described carbide disk 1 has wear resistance,
In contrast, the carbide ring disc 2 has approximately the same thermal expansion and contraction as the disc without worrying about these properties. Since it is only necessary to select the material with this in mind, relatively inexpensive materials can be used.

３は鋼材等から成る台金で、その中央部にはブツシュを
螺合するためのネジ穴３１を刻設せしめると共に平面３
２側にネジ穴３１と同芯上に凹部３３を形成せしめる。Reference numeral 3 denotes a base metal made of steel or the like, in the center of which a screw hole 31 for screwing the bushing is carved, and a flat surface 3 is provided.
A recess 33 is formed on the second side coaxially with the screw hole 31.

この凹部３３は前記した超硬環盤２を焼き嵌めまたは圧
入によって嵌着するので、その内径は該環盤２の外周２
４に見合った径に形成する。This recess 33 is fitted with the above-mentioned carbide ring disc 2 by shrink fitting or press fitting, so its inner diameter is equal to the outer circumference of the ring disc 2.
Form the diameter to match that of 4.

３４は合金の外周で超硬円盤１の外周１５と略同−径に
て形成されるものである。Reference numeral 34 denotes the outer periphery of the alloy, which is formed to have approximately the same diameter as the outer periphery 15 of the cemented carbide disk 1.

なお、３５は加圧矯正円盤を図外の機械に取り付けた際
の廻り止めピンが挿入される穴である。Note that 35 is a hole into which a rotation stopper pin is inserted when the pressurized correction disk is attached to a machine (not shown).

４はブツシュであり、該ブツシュは台金３の凹部３３に
超硬環盤２を焼き嵌めまたは圧入により嵌着後その上面
２３と平面３２上に超硬円盤１と環盤２と台金３を一体
化した後さらに上記三つの部材を締結する部材で、その
中央部には図外の機械の取付軸が嵌着する軸穴４１並び
に軸嵌大穴４２を設けると共に、円盤１の遊嵌穴１１と
環盤２の遊嵌穴２１に嵌挿する軸部４３と締結性と芯出
しをより効果的にするために形成した円盤１のテーパ面
１２に対応するテーパ面４４と台金３のネジ穴３１に螺
合を許容するネジ４５などから戊っている。4 is a bushing, and after the carbide ring disc 2 is fitted into the recess 33 of the base metal 3 by shrink fitting or press fitting, the carbide disc 1, the ring disc 2, and the base metal 3 are arranged on the upper surface 23 and the plane 32. It is a member that further fastens the above three members after integrating them, and has a shaft hole 41 and a large shaft-fitting hole 42 in the central part into which a mounting shaft of a machine (not shown) is fitted, and a loose-fitting hole of the disk 1. 11, a shaft portion 43 that fits into the loose fitting hole 21 of the ring disk 2, a tapered surface 44 corresponding to the tapered surface 12 of the disk 1 formed to make fastening performance and centering more effective, and a tapered surface 44 of the base metal 3. It is provided with a screw 45 or the like that allows screwing into the screw hole 31.

然かして、上記加圧矯正円盤の組み付けは、まず鋼材製
の台金３の凹部３３へ超硬環盤２を焼き嵌めまたは圧入
によって嵌着後、好ましくは台金３の平面３２と環盤２
の上面２３を面一と成る如く研削仕上げをおこなう、し
かる後、面一に形成された平面３２と上面２３上に銅板
を設置した上で超硬円盤１を載置しロウ付は作業を完了
させた後さらにブツシュ４のネジ４５を台金３のネジ穴
３１に螺合させながら円盤１のテーパ面１２にブツシュ
４のテーパ面４４を当接させて、しつかりと締着させた
上でネジ穴３１とネジ４５の境界の５に示す位置にスポ
ット溶接またはノックピンあるいはネジなどによって廻
り止めをおこない組み上げるのである。However, in assembling the pressure straightening disk, first, the carbide ring disk 2 is fitted into the recess 33 of the base metal 3 made of steel by shrink fitting or press fitting, and then preferably the flat surface 32 of the base metal 3 and the ring are fitted. Board 2
The top surface 23 is ground and finished so that it is flush with the top surface 23. After that, a copper plate is installed on the flat surface 32 and the top surface 23, which are formed flush with each other, and then the carbide disk 1 is placed on the top surface 23, and the brazing work is completed. After that, while screwing the screw 45 of the bushing 4 into the screw hole 31 of the base metal 3, the tapered surface 44 of the bushing 4 is brought into contact with the tapered surface 12 of the disc 1, and is firmly tightened. Rotation is prevented by spot welding, dowel pins, screws, etc. at the position shown in 5 at the boundary between the screw hole 31 and the screw 45, and the assembly is completed.

以上の如く構成した加圧矯正円盤の作業状態は第７図に
示した如く、上下に被加工材６の加工量に対応して、超
硬円盤１の表面が位置し、かつ回転中心Ｃ０Ｃを結ぶ線
りが被加工材６の中心Ｅと平行に配置し、矢印Ｆ方向に
夫々回転させて作業をおこなう。As shown in FIG. 7, the working condition of the pressurized straightening disk configured as described above is such that the surface of the carbide disk 1 is positioned above and below corresponding to the amount of processing of the workpiece 6, and the center of rotation C0C is The connecting lines are arranged parallel to the center E of the workpiece 6, and the work is performed by rotating each in the direction of the arrow F.

このとき被加工材６は矢印Ｇ方向に回転しつ）矢印Ｈ方
向に進行し所望どおりの製品を仕上げるのである。At this time, the workpiece 6 rotates in the direction of arrow G and advances in the direction of arrow H to finish the desired product.

本考案は、以上述べた如く、台金３の凹部３３へ超硬環
盤２を嵌着した上に、作用面を有する超硬円盤１を載置
してロウ付けするようにしたので超硬製の円盤と環盤が
概略熱膨張係数が同じであるので従来のように残留応力
からくるクラックの発生がなくなったこと）、鋼材と起
硬合金を複合化としたことによりコストが低減され、し
かも超硬合金単体での高速回転時での破損による危険性
が緩和されると同時に超硬合金そのものにピン穴等の廻
り止め手段の加工を施していないので形状効果の点より
のクラックが防止できるなどの利点を有する加圧矯正円
盤である。As described above, in the present invention, the carbide ring disc 2 is fitted into the recess 33 of the base metal 3, and the carbide disc 1 having the working surface is placed and brazed. The coefficient of thermal expansion of the steel disk and ring disk is approximately the same, so there is no longer any cracks caused by residual stress as in the past), and by combining steel and hardened alloy, costs are reduced. In addition, the risk of breakage of the cemented carbide itself during high-speed rotation is alleviated, and at the same time, the cemented carbide itself is not machined with pin holes or other means for preventing rotation, which prevents cracks due to the shape effect. This is a pressurized straightening disk that has the following advantages.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例を示す断面した正面図、第２図
から第５図までは第１図の各部材を断面した正面図、第
６図は第１図の底面図、第７図は作業状態を示す説明図
である。 図面の符号、１・・・・・・起硬円盤、２・・・・・・
超硬環盤、３・・・・・・台金、４・・・・・・ブツシ
ュ、５・・・・・・廻す止め部材、６・・・・・・被加
工材、Ａ・・・・・・加圧矯正円盤。Fig. 1 is a sectional front view showing an embodiment of the present invention, Figs. 2 to 5 are sectional front views of each member in Fig. 1, Fig. 6 is a bottom view of Fig. 1, and Fig. The figure is an explanatory diagram showing the working state. Reference numbers in the drawings: 1... hardening disk, 2...
Carbide ring disk, 3... Base metal, 4... Bush, 5... Turning stop member, 6... Workpiece material, A... ...Pressure correction disc.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 加圧矯正作用面を超硬合金と、し、これを受ける合金が
鋼材製から威る引抜材料の外周面を真直・真円にしたり
、あるいは琢磨したりする加圧矯正円盤において、前記
台金の凹部に超硬環盤を焼き嵌め、または圧入等によっ
て嵌入し、合金の平面と該環盤の上面を面一または環盤
の上面を該平面より突出させて形成し、しかる後、超硬
円盤の底面を上記上面と平面上に載置し、゛銀白つまた
は銅ロウ゛付けによつｔ固着したことを特徴とする加圧
矯正円盤。In a pressurized straightening disk whose pressurized straightening surface is made of cemented carbide and the alloy receiving the pressurized material is made of steel, the outer circumferential surface of the drawn material is straightened, perfectly rounded, or polished. A carbide ring is fitted into the recess by shrink fitting or press fitting, so that the plane of the alloy and the upper surface of the ring are flush with each other, or the upper surface of the ring protrudes from the plane, and then the carbide ring is A pressurized correction disk characterized in that the bottom surface of the disk is placed on a plane with the top surface and fixed by silver plating or copper soldering.