JPH0192345U

JPH0192345U -

Info

Publication number: JPH0192345U
Application number: JP18814287U
Authority: JP
Priority date: 1987-12-10
Filing date: 1987-12-10
Publication date: 1989-06-16

Description

[Brief explanation of the drawing]

第１図は本考案の第１の実施例を示すものであ
り、主軸と工具との装着部構造の側断面図、第２
図は本考案の第２の実施例を示すものであり、主
軸と工具との装着部構造の側断面図、第３図は第
３の実施例を示すものであり、主軸と工具との装
着部構造の側断面図、第４図、第５図は従来の技
術を説明するためのものであり、第４図はＮＣ工
作機械の概要を示す側面図であり、第５図はその
主軸の先端部付近の側断面図である。４……主軸、４ａ……収納孔、４ｂ……テーパ
部、６……ツール（工具）、７……ツールシヤン
ク、７ａ，３０ａ，３２ｃ……周溝、２１……プ
ルスタツド（係合部）、２２……コレツト、２３
……プツシユロツド（棒状部材）、２５……貫通
孔、３０……シール部材、３１……環状部材、３
２……筒状部材、３２ｃ……環状溝。 FIG. 1 shows the first embodiment of the present invention, and shows a side sectional view of the structure of the attachment part between the main spindle and the tool, and a second embodiment of the present invention.
The figure shows a second embodiment of the present invention, and is a side cross-sectional view of the structure of the attachment part between the spindle and the tool, and FIG. Figures 4 and 5 are side sectional views of the structure of the parts, and are for explaining the conventional technology. Figure 4 is a side view showing an overview of the NC machine tool, and Figure 5 is a diagram showing the main axis of the FIG. 3 is a side cross-sectional view of the vicinity of the tip. 4...Main shaft, 4a...Storage hole, 4b...Tapered part, 6...Tool (tool), 7...Tool shank, 7a, 30a, 32c...Peripheral groove, 21...Pull stud (engaging part), 22...Collect, 23
... Push rod (rod-shaped member), 25 ... Through hole, 30 ... Seal member, 31 ... Annular member, 3
2... Cylindrical member, 32c... Annular groove.

Claims

[Claims for Utility Model Registration] (1) A main shaft having a storage hole with a tapered hole formed at the tip, which is fitted into the tapered hole of the main shaft,
and a tool shank having a tool attached to the tip and a pull stud provided at the rear, and a tightening device for press-fitting the tool shank into a tapered hole by removably grasping the pull stud of the tool shank and pulling it backward. a fastening member, and a push rod provided inside the fastening member to push the front tool shank out of the tapered hole by pressing the pull stud, the tool shank and the push rod having a through hole for passing a coolant therethrough. In a machine tool having a spindle-through type coolant supply device in which a hole is formed, the coolant is supplied to a fitting gap between the tool shank and the tapered hole between the tool shank and the tapered hole at a rear side position of the tool shank. A structure for mounting a main spindle and a tool in a machine tool, characterized by having a sealing mechanism for preventing intrusion. (2) The sealing mechanism is characterized in that a circumferential groove is formed on the outer circumferential surface of the tool shank, and a sealing member such as an O-ring or a U-packet that is in close contact with the tapered hole of the main shaft is provided inside the circumferential groove. A structure for mounting a main spindle and a tool in a machine tool according to claim 1 of the utility model registration claim. (3) The sealing mechanism includes an annular member provided on the inner circumferential surface of the storage hole of the main shaft, a circumferential groove formed on the inner circumferential surface of the annular member, and an O that is in close contact with the outer circumferential surface of the tool shank in the circumferential groove. A structure for mounting a main spindle and a tool in a machine tool according to claim 1, characterized in that a sealing member such as a ring or a U-packet is provided.