Screw Driving Machine
AssigneeMax Co., Ltd.
InventorKazuya Mochizuki
Life of this patent
Estimating the term…
Abstract
A screw driving machine includes a driving piston to which a driver bit is attachable, a driving cylinder partitioned into a first chamber and a second chamber by the driving piston and moving the driver bit when compressed air is supplied to the second chamber, an air motor rotating the driver bit by the compressed air, an air flow path communicating the second chamber and the air motor, a main chamber storing the compressed air and communicating with the air flow path, and a main valve opening and closing communication between the air flow path and the main chamber. The driving cylinder has a supply port communicating the air flow path and the second chamber. A throttle portion is disposed to be displaceable on an outer periphery of the driving cylinder to change an opening area of the supply port.
Claims5
A screw driving machine comprising:
- a driving piston to which a driver bit is attachable;
- a driving cylinder partitioned into a first chamber and a second chamber by the driving piston, the driving cylinder being configured to cause the driver bit to move in an axial direction when compressed air is supplied to the second chamber;
- an air motor configured to cause the driver bit to rotate about an axis through the driving piston when the compressed air is supplied;
- a first air flow path communicating the second chamber and the air motor with each other;
- a main chamber configured to store the compressed air, the main chamber communicating with the first air flow path;
- a main valve configured to open and close communication between the first air flow path and the main chamber;
- and
- an on-off valve configured to open and close a second air flow path connecting the first air flow path and the air motor,
- wherein the air motor is provided on a second chamber side and coaxially with the driving cylinder,
- wherein the main valve is provided on an outer periphery of the driving cylinder on a driving cylinder side with respect to the air motor along an axial direction of the driving cylinder, and
- wherein the on-off valve is provided on a side portion of the air motor.
Dependencies are inferred from the claim text.