JPH10251652A - Cutting machine for sheet surface of oven lid frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lightweight cutting machine for the sheet surface of an oven lid frame which can smoothly cut the whole surface. SOLUTION: In this machine, a rail frame 7 is fixed by screwing at the intermediate points of support shafts 4 installed with distances in the oven direction from an oblong frame 3 fixed in a plane contact with a backstay 26; the rail frame 7 is curved in about the same shape as the curve of the sheet surface of an oven lid 1 by the rotation of each support shaft 4; an end mill cutter 9 is carried movably in the transverse direction on a truck moving up-and-down along the rail frame 7 curved as above; and the sheet surface of the oven lid 1 is cut by the end mill cutter 9 moving around the sheet surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a furnace frame cutting machine, and more particularly to a furnace for cutting by rotating an end mill cutter along a rail frame which is bent and inclined substantially in the same shape as the curved surface of the furnace frame. The present invention relates to a lid frame sheet surface cutting machine.

[0002]

2. Description of the Related Art A sheet surface of a furnace lid frame of a coke oven has a dent due to scraping or oxidizing corrosion when the furnace lid is attached and detached, and gas leakage occurs when the furnace lid is mounted. Scratches and the like are periodically removed by cutting to prevent gas leakage.

[0003] In the furnace lid frame sheet cutting machine, a cutting machine is mounted so as to be able to move sideways on a traveling carriage moving up and down in a vertically long frame, and is rotated along the furnace lid frame sheet surface for cutting. However, since the surface of the furnace lid frame is bent and inclined such that the intermediate portion thereof projects forward due to high heat, the temperature of the furnace lid frame sheet is disclosed in
No. 9 discloses measuring the warp inclination of the furnace lid frame sheet with a sensor, and controlling the feed amount of the end mill cutter based on the measured data to follow the warp inclination of the furnace lid frame sheet surface. It describes cutting. Japanese Patent Application Laid-Open No. 8-92563 describes that an actuator is actuated by a reaction force received by a grindstone to cut the grindstone so that the grindstone follows and bends into and out of the furnace cover frame sheet surface.

[0004]

However, the measurement of the inclination of the sheet surface of the furnace lid frame by a sensor has a problem that a measurement error occurs due to a large amount of tar, carbon or the like attached to the sheet surface. Since the end mill cutter cuts the inclined sheet surface at many portions at an acute angle, the cut surface has fine irregularities, and there is a problem that a step is generated between the cutting start end and the cutting end. In addition, the actuation of the actuator by the reaction force applied to the grindstone requires a considerable amount of time, so that there is a problem that it takes a lot of time for the circular cutting. In addition, there is a problem that it is not easy to cut the grindstone to a depth at which the dent scratch is removed.

[0005]

According to the present invention, a rail frame is screwed into the middle of a plurality of support shafts provided at intervals in the furnace direction from a vertically long frame body which is in contact with and fixed to a back stay. The frame is bent and tilted by the rotation of each of the support shafts so as to have substantially the same shape as the bend and tilt of the furnace lid frame sheet surface, and an end mill cutter is mounted on the traveling bogie that moves up and down along the bent and tilted rail frame. Then, the end mill cutter is used to solve the problem by cutting the surface of the furnace lid frame around.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

A vertically long frame 3 having vertically long plate portions 3a and 3b in contact with the front surfaces of back stays 2a and 2b surrounding the furnace lid frame 1 is formed. A plurality of support shafts 4 are rotatably mounted on the inside of the longitudinal plate portions 3a and 3b on both sides of the longitudinal frame body 3 at intervals in the furnace direction. 5 is a support cylinder of each support shaft 4,
The length is adjusted by entering and leaving the screw between a and 3b by screw fitting.

Each of the support shafts 4 has a screw portion 6 formed by fitting male and female screws between the support shaft 4 and the rail frame 7 to support the rail frame 7 in a freely bendable manner. The rail frame 7 has a vertically long shape slightly larger than the furnace lid frame sheet surface 1a, and a rail 7a is attached to the front surface thereof.
Are fitted over guides 8a and 8b with bearings of the traveling vehicle 8. The traveling trolley 8 is equipped with an end mill cutter 9 which is deviated to one side and has a blade surface facing the seat surface 1a. The end mill cutter 9 is provided with a vertical movement of the traveling trolley 8 and a screw shaft provided on the traveling trolley 8 for lateral movement. With 10 rotations, it runs around the front surface of the furnace lid frame sheet surface 1a. 9a is a motor for rotating the end mill cutter 9, 10a and 10a are rails for traversing the traveling carriage 8, 10b and 10b are guides with bearings fitted to the rails 10a and 10a, 10c is a motor for rotating the screw shaft 10, Numeral 11 denotes a screw ball screw for moving the carriage 8 up and down, and 11a denotes a motor.

The furnace lid frame sheet cutting machine formed in this manner is mounted on an extruder, a coke guide wheel or another work vehicle (neither is shown) to cut the furnace lid frame 1 to be cut. It is conveyed to the front surface, and the longitudinal plates 3a, 3b of the longitudinal frame 3 are brought into contact with the front surfaces of the back stays 2a, 2b by forward movement, and the back stays 2a, 2b are sandwiched from both sides by the clamp hardware 12 fitted on both sides. With the bolts 13 fixed, the end of each of the support shafts 4 is pulled out of the support cylinder 5 so that the coke oven protection plates 14a, 1
After adjusting the position of the rail frame 7 by pressing it against 4b, the warp inclination of the furnace lid frame sheet surface 1a is measured by eye measurement or the like, and each support shaft 4 is manually turned to a large or small size to match the warp inclination. It moves. When the support shaft 4 is rotated with the back stays 2a, 2b fixed to the vertical plate portions 3a, 3b in contact with the protection plate 14a, 14b as a fulcrum, the rail frame 7, which is screw-fitted to the support shaft 4, is provided.
Moves along the length of the rail 7a, and as shown in FIG. 4, bends and inclines in substantially the same shape as the warp and incline of the furnace lid frame sheet surface 1a. Then, by operating the handle 9b of the end mill cutter 9, the feed amount (advance amount) of the blade surface with respect to the sheet surface 1a is reduced to, for example, 4 mm to eliminate the deepest dent scratch on the sheet surface 1a, and running while rotating in contact with the sheet surface 1a. The truck 8 is moved up and down, and the furnace cover frame sheet surface 1a is cut by the rotation of the horizontal screw shaft 10 at the upper and lower running ends. When the upper and lower sheet surfaces 1a are wide and cannot be cut in one transverse movement, the transverse movement of the end mill 9 may be repeated while the traveling carriage 8 moves up and down.

When the circumferential cutting of the furnace lid frame sheet surface 1a is completed, the blade surface of the end mill cutter 9 is separated from the sheet surface 1a and each support shaft 4 is rotated back to make the rail frame 7 vertical and each support shaft is rotated. The end of the support tube 4 is rotated back by the support cylinder 5 so that the protection plate 14
a, 14b, and the back stays of the vertical plates 3a, 3b.
After releasing the fixation to 2a and 2b, the entire body is retracted into the traveling path and moved to the next work position.

[0011]

As described above, according to the present invention, the rail frame for moving the traveling bogie up and down in the cutting of the furnace lid frame sheet surface is bent and inclined substantially in the same shape along the warp bending inclination of the furnace lid frame sheet surface. So that the end mill cutter cuts at right angles on all sides of the sheet surface,
There is an effect that the sheet surface can be cut flat.

By setting the feed amount of the blade surface of the end mill cutter once, the sheet surface can be circularly cut at a predetermined depth, and the effect of eliminating the step between the cutting start end and the end can be eliminated. Occurs.

Further, there is an effect that the time required for orbital cutting of the sheet surface can be significantly reduced.

By using the back stay as a fulcrum for the bend of the rail frame, the vertical frame can be remarkably lightened by a simple structure in which two vertical plate portions and upper and lower ends thereof are bound by horizontal plates. This facilitates movement and management.

[Brief description of the drawings]

1 (a) is a front view of a cutting machine of the present invention, and FIG. 1 (b) is a side view thereof.

FIG. 2 is an enlarged side view of the traveling bogie.

FIG. 3 is a cross-sectional plan view showing a working state attached to a backstay.

FIG. 4 is a partial side view showing a state in which the rail frame is bent and tilted along the warp and tilt of the seat surface.

[Explanation of symbols]

 1 is a furnace lid frame 2a, 2b is a back stay 3 is a vertically long frame 3a, 3b is a vertically long plate portion 4 is a support shaft 5 is a support cylinder 6 is a screwed portion 7 is a rail frame 8 is a traveling trolley 8a, 8b contains bearings The guide 9 is an end mill cutter 9a is an end mill cutter prime mover 10 is a sideways screw shaft 10a, 10b is a sideways rail 10b, 10b is a bearing containing bearing 10c is a prime mover for rotating a screw shaft 11 is a screw ball screw 11a is a screw The prime mover 12 that rotates the ball screw 12 is the clamp hardware 13 is the bolt 14a, 14b is the protective plate of the coke oven 15a, 15b is the regulating plate that prevents the rail frame from expanding

Claims (2)

[Claims] 1. A rail frame is screwed into the middle of a plurality of support shafts provided at intervals in the furnace direction from a vertically long frame body which is in contact with and fixed to a back stay, and the rail frame is attached to each of the support shafts. The end mill cutter is mounted so as to be able to move sideways on a traveling vehicle that moves up and down along the bent and inclined rail frame, by bending and inclining substantially in the same shape as the warp bending inclination of the furnace lid frame sheet surface by rotation. A furnace cover sheet surface cutting machine, which cuts a furnace cover frame sheet surface. 2. The furnace lid frame sheet cutting machine according to claim 1, wherein the end mill cutter cuts around the furnace lid frame sheet surface by setting the feed amount at one time.