Drilling machine
AssigneeSugino Machine Limited
InventorMinoru Ihara
Life of this patent
Estimating the term…
Abstract
The drilling machine includes a spindle, a spindle motor, a frame including, a linear motion guide support plate, a motor support portion, and a ram support plate disposed at a front end of the linear motion guide support plate, and having a height lower than the motor support portion, a linear motion guide disposed on the reference surface, a slider having a nut mounting hole to reciprocate along the linear motion guide, and having a height substantially the same as the motor support portion, a ram penetrating the first ram guide hole, a feed screw including a screw shaft having a rear end supported by the motor support portion and a front end that is a free end, and a nut fastened to the nut mounting hole; and a feed motor connected to the screw shaft.
Claims9
A drilling machine, comprising:
- a spindle extending horizontally;
- a spindle motor configured to drive the spindle;
- a box-shaped frame having an opening upward, the frame including
- a linear motion guide support plate having a reference surface manufactured by cutting,
- a motor support portion disposed at a rear end of the linear motion guide support plate, and
- a ram support plate having a first ram guide hole, the ram support plate disposed at a front end of the linear motion guide support plate, the ram support plate having a height lower than the motor support portion;
- a linear motion guide disposed on the reference surface;
- a slider having a nut mounting hole at an upper portion, the slider having a lower end connected to the linear motion guide configured to reciprocate along the linear motion guide, the slider having the same height as the motor support portion;
- a ram penetrating the first ram guide hole to be fastened to a front surface of the slider;
- a feed screw including
- a screw shaft having a rear end supported by the motor support portion and a front end that is a free end, the screw shaft disposed above the ram, and
- a nut fastened to the nut mounting hole;
- a feed motor fixed to the motor support portion to be connected to the screw shaft;
- a first fitting portion disposed on the ram support plate coaxially with the first ram guide hole;
- and
- a ram guide detachably attached at a front outer side of the ram support plate, the ram guide including a second fitting portion configured to fit with the first fitting portion and a second ram guide hole within which the ram slides,
- wherein the ram slides within the first ram guide hole and the second ram guide hole,
- the feed screw includes a cylindrical portion disposed at a front end of the screw shaft and coaxially with the screw shaft, the cylindrical portion being configured to adjust a parallelism between the linear motion guide and the screw shaft, and
- the drilling machine further comprises
- a first fitting portion disposed on the ram support plate coaxially with the first ram guide hole, and
- an adjustment jig, the adjustment jig including a third fitting portion configured to fit with the first fitting portion and a fourth fitting portion configured to fit with the cylindrical portion.
Dependencies are inferred from the claim text.