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How to work Pipe or Bolt Threading Machine

Author: Imc Machines
by Imc Machines
Posted: Mar 05, 2023

Industrial Machinery Corporation has invented a certain new and useful Improvement in Machines for Threading Bolts and Pipes, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same This invention relates to machines of the character that are used for Bolt Threading Machine

The main object of our present invention is to provide means for increasing the efficiency and speed of operation of a pipe or bolt threading machine of the type in which an operating medium such as a hydraulic medium or a medium under pressure is used for causing the work to be engaged by the threading mechanism and for separating the threading work without speeding up the machine or increasing the speed of the drive shaft, and without changing the chasers of the threading mechanism.

At this end we have devised a bolt or pipe threading machine in which the supply of the operating medium that affects the movement of one main element of the machine toward the other main element; for example, the carriage toward the threading mechanism is automatically out off after the article being. threaded has been engaged by the threading mechanism and the supply of the operating medium that affects the return of the "carriage to starting position is automatically turned on at the completion of the threading operation so as to cause the carriage to return to starting position, and is cut off automatically when the carriage reaches its starting position.

Pipe or Bolt Threading Machine of the above construction is practically automatic in its operation, for after the supply of the operating medium has been turned on by the operator in charging the remainder of "the cycle of, the machine.

Work is carried by a carriage that moves toward and away from the threading mechanism. wish it to be understood, however, that it is immaterial, so far as my broad idea 1s concerned, which main element of the machine is movable toward and away from the other main element, so long as the work can be engaged by and separated from the bolt threading machine.

Referring to the drawings, A designates the base of the machine. B designates the threading mechanism, and C designates the carriage on which the bolt or pipe to be threaded is mounted and clamped in any preferred manner, the bolt threading machine herein illustrated being equipped with a clamping means of the character described application

In the form of our invention herein illustrated a single operating cylinder D is provided for moving the carriage C toward and away from the threading mechanism B, but I wish it to be understood that it is immaterial, so far as my broad idea is concerned, what particular type of hydraulic or pneumatic means is employed for moving the carriage G in opposite directions. In the machine herein illustrated the piston 1 of the operating cylinder D is connected to the carriage (l by means of a rod 2 whose front end is attached to an arm 3 that projects downwardly from the carriage. Compressed air or any other suitable operating medium is admitted to and exhausted from the cylinder D to effect the movement of the carriage C toward the threading mechanism by means of a three-way valve E arranged at the front end of the machine and provided with a handle 4: that is adapted to be moved manually by the operator toward the left so as to turn on the supply of the operating medium or cause said operating medium to be admitted to the front end (the left hand end) of the cylinder D.

As soon as the supply of the operating medium has been turned on in the manner just described, the carriage 0 starts to move to the right toward the threading mechanism B, and when the article on said carriage which is to be threaded is engaged by the threading mechanism B, the valve E is actuated automatically so as to out off the supply of the operating medium to the cylinder D and also exhaust the operating medium previously admitted to said cylinder. arious means can be employed for actuating the valve E automatically so as to out of the supply of the operating medium in the manner just described, but 1 prefer to connect the handle 4 of said valve to a rod 5 that passes through a guide 6 on the carriage C and which is provided at its right hand end with a stop 7 that is adapted to be engaged by the guide 6 when the carriage C reaches a certain position in its travel toward the threading mechanism, the movement imparted to the rod 5 by the guide 6 on the carriage causing the stem of the valve E to be moved into such a position that the supply of the operating medium to the cylinder D will be cut 0 and the operating medium previously admitted to the cylinder permitted to exhaust from said cylinder after the article on the carriage has been brought into operative relationship with the threading mechanism. The stop 7 is preferably adjustably connected to the rod 5, as for example, by means of a set screw 7*, so as to permit the automatic tripping or closing of the valve E to be accurately regulated.

The pipe or bolt threading machine is also equipped with a three way valve F, and means-for automatically opening said valve at the completion of the threading operation, thus causing the carriage C to return to its starting position,and for closing said valve automatically when the carriage reaches its starting position. The mechanism employed in the machine herein illustrated for automatically opening and closing the valve F consists of, a rock arm or lever 8 that is connected by means of a link 9 with an arm 10 on the stem of the valve F, and a rod 11 connected to the. carriage C and provided with tripping devices 12 and 13 that engage and move the rock arm 8 at certain points in the cycle of operations of the carriage C, namely, when the carriage is approaching the end of its stroke to the right, and when 7 the carriage is approaching the end of its stroke to the left, or,in other words, shortly 7 before it reaches its starting position. 7 a After the bolt, rod, or other article to be "threaded. has been clamped in operative position-Von the carriage C the operator in charge of the machine actuates the valve E so as to admit the operating medium to the front end of the cylinder D through the supply pipe 14:, thereby causing the carriage to start to move toward the threading mechanism B. At a certain point in the stroke of the carriage, namely, after the ar-V tickle theron has been engaged by the threading mechanism B, the cooperation of the guide 6 on the carriage with the stop 7 on r 'the rod 5 causes the valveS to close and cut '0 s the supply of the operating medium which affected the movement of the carriage the tripping device 12 on the rod 11 en-v gages the rock arm 8 and moves it in a direction to cause the valve F to open at the termination of the threading operation, thereby causing the operating medium to be admitted to the rear end of the cylinder D through the supply pipe 14, and thus causing the piston l in said cylinder to move forward or in a direction to return the carriage C to its starting position. Just before the carriage reaches its starting position the tripping device 13 on the rod 11 engages the rock arm 8 and moves it in a direction to cause the valve F to close as soon as the carriage reaches its starting position, the operating medium that was previously admitted to the rear end of the cylinder D escaping from said cylinder as soon as the valve F closes. The tripping.devices 12 and 13 on the rod 11 are preferably adjustably connected to same,'so as to enable the return stroke of the carriage.C to be accurately controlled, the tripping devices herein illustrated being adjustably mounted ing medium that causes said reciprocating element to move toward the other main element of the machine, nothing further is required of the operator during the remainder of the cycle of the carriage.

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Welcome to my profile...Hope you will enjoy my articles. We are supplying our Products throughout India and Abroad Under the brand Name ‘Imc’

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Author: Imc Machines

Imc Machines

Member since: Jan 19, 2018
Published articles: 5

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