JPH0451302U

JPH0451302U -

Info

Publication number: JPH0451302U
Application number: JP9369390U
Authority: JP
Priority date: 1990-09-05
Filing date: 1990-09-05
Publication date: 1992-04-30
Anticipated expiration: 2005-09-05
Also published as: JPH0751201Y2

Description

[Brief explanation of the drawing]

第１，２図は本考案の基本実施例を示す側面図
と正面図、第３図は第２図の３−３線断面図、第
４図は第３図に対応する変形実施例を示す部分側
断面図、第５図は第３図の５−５線に沿う拡大断
面図、第６図は第４図の６−６線に沿う拡大断面
図、第７図はカム盤を抽出して示す正面図、第８
図は第７図の８−８線断面図、第９図は第８図に
対応する変形例を示す側断面図、第１０〜１９図
は被加工物における丸穴の各種開口形状を示す平
面図と、その各平面図に記入した矢視位置での対
応断面図、第２０，２１図は第１０〜１３図の２
種な被加工物に対応する溝カムのプロフイルを各
々示す展開グラフ、第２２図は被加工物とその面
取り加工用片刃バイトとの対応位置関係を示す側
面図、第２３図は面取り加工状態を示す部分拡大
断面図である。１５……油圧シリンダー、２０……カツプリン
グ、２８……駆動モーター、３１……ピストン、
３８……口金、３９……密閉収容室、４２……主
軸、４４……片刃バイト、４８……カム盤、５０
……溝カム、５１……ボール、５２……ボール受
け、５５……エヤー供給路、５９……丸穴、Ａ…
…主軸台、Ｍ……被加工物、Ｏ……潤滑油。 Figures 1 and 2 are side and front views showing the basic embodiment of the present invention, Figure 3 is a sectional view taken along line 3-3 in Figure 2, and Figure 4 shows a modified embodiment corresponding to Figure 3. Partial side sectional view, Figure 5 is an enlarged sectional view taken along line 5-5 in Figure 3, Figure 6 is an enlarged sectional view taken along line 6-6 in Figure 4, and Figure 7 shows the cam disk extracted. Front view shown in Figure 8
The figure is a sectional view taken along the line 8-8 in Fig. 7, Fig. 9 is a side sectional view showing a modification corresponding to Fig. 8, and Figs. 10 to 19 are plane views showing various opening shapes of round holes in the workpiece. 20 and 21 are the corresponding cross-sectional views at the arrow positions indicated in each plan view, and 2
A developed graph showing the profiles of grooved cams corresponding to various workpieces, Fig. 22 is a side view showing the corresponding positional relationship between the workpiece and a single-edged cutting tool for chamfering, and Fig. 23 shows the chamfering state. It is a partially enlarged sectional view shown. 15... Hydraulic cylinder, 20... Coupling, 28... Drive motor, 31... Piston,
38... Mouthpiece, 39... Sealed storage chamber, 42... Main shaft, 44... Single-edged bit, 48... Cam disc, 50
... Groove cam, 51 ... Ball, 52 ... Ball receiver, 55 ... Air supply path, 59 ... Round hole, A ...
...headstock, M...workpiece, O...lubricating oil.

Claims

[Claims for Utility Model Registration] 1. A headstock A assembled in a sealed box type, a hollow piston 31 fitted with the hollow interior serving as a hydraulic cylinder 15 so as to be able to move forward and backward only, and the piston 31 a mouthpiece 38 that is assembled to the front surface of the cam disc to define a sealed housing chamber 39 for the cam disk; A main shaft 42 is supported by a bearing so that it can move forward and backward and rotate. A drive motor 28 for rotating the main shaft is operatively and transmission-coupled to the rear end of the main shaft 42 via a coupling ring 20. The base 38 A single-edged cutting tool 44 for chamfering is attached to the front end of the main shaft 42 exposed from the main shaft 42 so as to be able to rotate integrally with the main shaft 42;
The cam disc 48 is fitted onto the front part of the moving main shaft 42 so as to be able to rotate integrally therewith, and the profile of the rotation trajectory follows the opening edge of the round hole 59 previously drilled in the workpiece M.
A grooved cam 50 carved on the rear surface of the cam disk 48, and a piston 3 facing the rear surface of the cam disk 48.
1, and a ball 51 that is engaged with the ball receiver 52 and the grooved cam 50, and the ball 51 and the grooved cam 50 of the cam disk 48. In order to maintain stable engagement at all times, compressed air applies a backward pressing force to the main shaft 42, and the main shaft 42 and the piston 31 are set to be controlled in forward and backward directions by hydraulic oil supplied and discharged into the hydraulic cylinder 15. 2. In order to apply a backward pressing force to the main shaft 42, an air supply path 55 to the inside of the sealed housing chamber 39 for the cam disk is bored in the base 38, and the sealed housing chamber 39 is used as an air cylinder;
2. The apparatus for chamfering a round hole according to claim 1, wherein the cam disc 48 is used as a piston, and the main shaft 42 is always urged in a backward pressing state by compressed air supplied from an air supply path 55 of the cam disc 48. . 3. A certain amount of lubricating oil O is stored in the sealed storage chamber 39 for the cam disc, and the ball 51 is immersed in the lubricating oil O, so that the engagement portion between the ball 51 and the grooved cam 50 of the cam disc 48 is 2. The round hole chamfering device according to claim 1, wherein said round hole chamfering device is maintained so as to be automatically supplied to said hole.