JPS624440Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a facing mill device for steel pipes that is equipped with a pipe length measuring device that automatically measures the length of a material after cutting both end faces of a steel material or a large diameter pipe, for example. .

In a conventional facing machine for steel pipes, a fixed side face cutter and a movable side face cutter are arranged opposite to each other so as to be able to face both ends of a steel pipe placed on a steel pipe pedestal.
Since no pipe length measuring device was installed to measure the length of the steel pipe after cutting was completed, the only way to measure the length of the steel pipe was to have two operators use a tape measure, making the measurement work extremely inefficient. And since it is not mechanical, it is not free from problems such as errors and measurement errors.

This idea was made with the aim of improving the current state of pipe length measurement work in facing machines.
The gist of this is that one end of the steel pipe is cut with a stationary side cutter and the other end is cut with a moving side cutter, and the movable side cutter is made to be able to run according to the length of the raw pipe, and the movable side cutter is cut. A detection device is provided for detecting the distance traveled by the machine, the amount of cutting movement of a movable side milling machine headstock from its original position, and the amount of cutting movement of a fixed side milling machine headstock from its original position. It is something.

Embodiments of the surface milling machine device according to this invention will be described below with reference to the drawings.

1 is a steel pipe placed on a steel pipe pedestal 2; 3 is a movable side milling machine disposed on the right side of the steel pipe; 4 is a movable side milling machine disposed on the left side of the steel pipe 1 in opposition to the face milling machine; This is a fixed side milling machine.

The movable side milling machine 3 includes a headstock 5 forming the main body of the device, a cutting motor 6, and a transmission mechanism 7 connected to the motor.
A face plate 8 driven via a speed reduction mechanism (not shown) installed in the headstock 5, a cutter 9 attached to this, and a headstock 5 holding these devices are moved in and out in the cutting direction. Consisting of a cylinder 10 and a bed 11 on which the entire device is loaded and travels on rails, a pinion 14 is linked to a drive deceleration motor 13 provided in the bed 11 to drive the rail travel.
By engaging and driving the rack 15 provided on the rail 12, the movable side milling machine 3 is moved through the bed 11.
is configured to run in the cutting direction.

Furthermore, a pulse transmitter PG1 supported by a support stand 16 and connected to the shaft end of the drive deceleration motor 13 is provided on the bed 11, which travels by meshing with a pinion 14 and a rack 15. The interval X at the time of setting the blank tubes is read by electrically controlling the path signal transmitted from the base tube to adjust the amount of bed movement to a predetermined reference value.

The movable side milling machine configured as described above drives the cutting motor 6, rotates the face plate 8 to which the cutter 9 is attached via the transmission mechanism 7 interlocked with the motor 6 and the deceleration mechanism in the headstock 5, and achieves this state. The cylinder 10 is driven to move the headstock 5 forward in the cutting direction, thereby cutting the end face of the steel pipe 1. Furthermore, this forward movement is performed by the engagement of a rack 17 attached to the side surface of the headstock 5 with a pinion 19 supported pivotally on a mounting base 18 protruding from the bed 11, and a coupling 20 is attached to the pinion shaft. The amount of movement Y is read by electrically controlling the pulse signal transmitted from the pulse transmitter PG2 connected via the pulse transmitter PG2.

On the other hand, in the fixed side milling machine 4, the movable bed 11 of the movable side milling machine 3 is replaced with a fixed bed 21.The other part of the fixed side milling machine 4 is that the headstock 5' and the device held on the headstock are movable side milling machines. Although the mechanism is different from the device shown in FIG. The end face of the steel pipe 1 is cut by rotating the face plate 8' to which the cutter 9' is attached via the shaft 1), and in this state, driving the cylinder 10' to move the headstock 5' forward in the cutting direction. This forward movement amount Z is determined by the rack 17' attached to the side surface of the headstock 5' and the mounting base 1 protruding from the bed 21.
A coupling 2 is attached to the pinion shaft which is driven by meshing with the pinion 19' supported on the pinion 8'.
The reading is performed by electrically controlling the pulse signal transmitted from the pulse transmitter PG3 attached via the terminal 0'.

In this way, the distance X obtained by adjusting the travel distance of the movable side milling machine 3 from the predetermined reference position, the cutting travel distance Y of the movable side headstock 5 from the original position, and the fixed side milling machine headstock 5'. By detecting the cutting movement amount Z from the original position, the pipe length after cutting is L=X-
It is easily calculated as Y-Z.

FIG. 5 shows a block diagram of the pipe length measuring device, in which pulses transmitted from each pulse transmitter PG1, PG2, PG3 are detected by detectors 22, 23, 24, and inputted to a data selector 26 by an addition/subtraction circuit 25. A sequence is set up so that the output signal is further electrically controlled and displayed on the display.

As mentioned above, this device automatically measures the length of steel pipes using electrical control, which eliminates the need for two operators like traditional tape measure measurements and eliminates problems such as errors and measurement mistakes. This can be reliably resolved and measurement work can be carried out efficiently.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a layout diagram, FIG. 2 is a sectional view taken from the side of FIG. 1, and FIG.
1, FIG. 4 is a sectional view taken from FIG. 1, and FIG. 5 is a block diagram for measuring pipe length. 1... Steel pipe, 3... Moving side milling machine, 4... Fixed side milling machine, 5, 5'... Headstock, 6, 6'... Cutting motor, 8, 8'... Face plate, 9, 9'... cutlery,
10, 10'... Cylinder, 11, 21... Bed, 12... Rail, 13... Drive reduction motor,
14, 19, 19'...Pinion, 15, 17,
17'... Rack, 22, 23, 24... Detector, 25... Addition/subtraction circuit, 26... Data selector, PG1, PG2, PG3... Pulse oscillator.

Claims (1)

[Scope of utility model registration request] In a device in which a fixed side surface cutter and a movable side surface cutter are arranged in series facing each other so that both end faces of a steel pipe can be milled, it is possible to move the movable side surface cutter according to the length of the raw pipe. Along with Shimuru, its traveling device,
By providing a pulse transmitter in each of the moving devices of the moving headstock and the fixed headstock, and electrically controlling the pulse signals from the pulse transmitters,
1. A steel pipe facing mill device equipped with a pipe length measuring device, characterized in that the reference distance between a movable cutter and a fixed cutter is always displayed.