JPH0451301U

JPH0451301U -

Info

Publication number: JPH0451301U
Application number: JP9369290U
Authority: JP
Priority date: 1990-09-05
Filing date: 1990-09-05
Publication date: 1992-04-30
Anticipated expiration: 2005-06-21
Also published as: JPH0727041Y2

Description

[Brief explanation of drawings]

第１，２図は本考案の第１実施例を示す全体概
略側面図と正面図、第３図は第２図の３−３線に
沿う拡大断面図、第４図は第３図に対応する部分
変形例を示す一部破断の側面図、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図に対応する部分変形例を示
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図は本考案の第２実施例を示す側断面図、
第２３，２４図は同じく第３実施例を示す側面図
と側断面図、第２５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２６図は面取り加工状態を示す部分拡大断面図
である。１３……台筐、１４……中間スリーブ、１５…
…口金、１６……中空室、２３……駆動モーター
、３１……第１給油路、３２……密閉収容室、３
５……主軸、３７……片刃バイト、４１……カム
盤、４３……溝カム、４４……ボール、４５……
ボール受け、４６……第２給油路、４８……圧縮
コイルバネ、４９，５０……バネリテーナー、５
２……押えナツト、５３……丸穴、５８……エヤ
ー供給路、Ａ……主軸台、Ｏ……潤滑油、Ｍ……
被加工物。 Figures 1 and 2 are an overall schematic side view and front view showing the first embodiment of the present invention, Figure 3 is an enlarged sectional view taken along line 3-3 in Figure 2, and Figure 4 corresponds to Figure 3. FIG. 5 is an enlarged sectional view taken along line 5-5 in FIG. 3, FIG. 6 is an enlarged sectional view taken along line 6-6 in FIG. 7 is a front view showing an extracted cam disk, FIG. 8 is a sectional view taken along line 8-8 in FIG. 7, FIG. 9 is a side sectional view showing a partial modification example corresponding to FIG. Figure 19 is a plan view showing various opening shapes of round holes in the workpiece, a corresponding cross-sectional view at the arrow position indicated in each of the plan views, and Figure 20.
Figure 21 is a developed graph showing the profiles of grooved cams corresponding to the two types of workpieces shown in Figures 10 to 13;
FIG. 22 is a side sectional view showing a second embodiment of the present invention;
23 and 24 are a side view and a side sectional view showing the third embodiment, and FIG. 25 is a side view showing the corresponding positional relationship between a workpiece and a single-edged cutting tool for chamfering the workpiece,
FIG. 26 is a partially enlarged sectional view showing the chamfering state. 13...Base, 14...Intermediate sleeve, 15...
...Cap, 16...Hollow chamber, 23...Drive motor, 31...First oil supply path, 32...Closed storage chamber, 3
5...Main shaft, 37...Single-edged bit, 41...Cam disc, 43...Slot cam, 44...Ball, 45...
Ball receiver, 46... Second oil supply path, 48... Compression coil spring, 49, 50... Spring retainer, 5
2... Presser nut, 53... Round hole, 58... Air supply path, A... Headstock, O... Lubricating oil, M...
Workpiece.

Claims

[Claims for Utility Model Registration] 1. A headstock A consisting of a housing 13, an intermediate sleeve 14 and a base 15 which are sequentially assembled to the front surface of the housing 13.
and a main shaft 35 which extends in the center of the headstock A and is supported so that it can move back and forth in the front and rear directions and rotate; A drive motor 23 that is a transmission-connected main shaft, a single-edged cutting tool 37 for chamfering that is attached to the front end of the main shaft 35 exposed from the base 15 so as to be able to rotate together, and the base 15 and the intermediate sleeve 14. A cam disk 41, which is also fitted onto the front part of the main shaft 35 so as to be able to rotate together with the main shaft 35, and a round hole pre-drilled in the workpiece M As a profile of the rotation trajectory following the opening edge of 53,
A grooved cam 43 carved on the rear surface of the cam disk 41, a ball receiver 45 embedded in the front surface of the intermediate sleeve 14 facing the rear surface of the cam disk 41, and a mutual interaction between the ball receiver 45 and the grooved cam 43. In order to keep the ball 44 and the grooved cam 43 of the cam disc 41 in a stable state of engagement at all times, the main shaft 35 is provided with a rearward force by a compression coil spring 48 or compressed fluid. A round hole chamfering device characterized in that a pressing force is applied to a round hole. 2. In applying a rearward pressing force to the main shaft 35, the compression coil spring 48 is wound around the rear part of the main shaft 35 facing into the hollow chamber 16 of the stand casing 13, and the front spring retainer 49 of the compression coil spring 48 is A feature is that while the intermediate sleeve 14 is fixedly held on the rear surface, the rear spring retainer 50 is also received by a retainer nut 52 screwed onto the main shaft 35 so that it can be adjusted forward and backward in the front and back direction of the main shaft 35. A round hole chamfering device according to claim 1. 3. In order to apply a rearward pressing force to the main shaft 35, a sealed storage chamber 32 for the cam disc 41 is partitioned between the front and rear facing sides of the base 15 of the headstock A and the intermediate sleeve 14, and the closed storage chamber 32 is sealed. Room 3
An air supply path 58 into the interior of the main shaft 35 is bored in the base 15, the sealed storage chamber 32 is used as an air cylinder, the cam disc 41 is used as a piston, and compressed air supplied from the air supply path 58 drives the main shaft 35. 2. The round hole chamfering device according to claim 1, wherein the round hole chamfering device is always biased in a rearwardly pressed state. 4 The base housing 13 of the headstock A is integrated into a frame as a sealed box, while the base 15 and intermediate sleeve 14 of the headstock A are also integrated.
A hermetic housing chamber 32 for the cam disk 41 is formed between the front and rear facing sides, and the hermetically sealed housing chamber 32 and the hollow chamber 1 of the pedestal case 13 are separated.
6 through a first oil supply passage 31 bored in the intermediate sleeve 14, and a second oil supply passage 46 communicating with the first oil supply passage 31 is also connected to a ball receiver 45 embedded in the intermediate sleeve 14. A certain amount of lubricating oil O stored in the hollow chamber 16 of the pedestal casing 13 is maintained so as to be automatically supplied to the engagement portion between the grooved cam 43 and the ball 44 of the cam disk 41 by drilling the holes. The round hole chamfering device according to claim 1, characterized in that: