Custom Designed Machine for Drilling and Cutting Tube.
Courtesy of Bespoke Machines
In this application, our client, Bespoke Machines, was asked to design and build a machine to drill a series of holes in steel tube and then cut off to the correct length. The stock tube being machined was 8.2 meters long and multiple tubes needed to be loaded so the machine could run automonously through the night. The size of the machine meant that there would be logistical issues to consider as the overall machine would be so large it would take a special lorry and loader to move to the clients site.
Our client designed all of the mechanics for the machine in-house and requested a semi-custom solution from TRM for the control systems.
The requirements of the design were to:
Using a 3 axis TRM motion controller with MAP software, two servomotors of 4.1 Nm and one servomotor of 1.2 Nm, each with a 1000 PPR encoder, one TRM electrical cabinet, a set of pre-made cables between the electrical cabinet and controller and 3 proximity sensors for home position sensing, our client was able to build and control the machine to meet the desired specifications.
By using the Motion Application Programme "MAP" our client was able to save money and time in software development. MAP can store many user programs in memory and each program can have up to 1000 commands. The flexibility of MAP means that very complex programs can be created, in this case the program was 250 lines long.
The number of holes, the angle and the length of the finished product can all be programmed by the user. Using the servomotors, the machine starts gripping the 8.2 meter long tube and takes it to position. The end is sawn square and then repositioned to drill the first hole. After executing one hole, the tube is moved to position in order to drill the second hole. By using the servomotors the tube can be rotated any number of degrees in order to make holes at a different angle. Once all the holes have been drilled, the saw is activated and the tube is cut to length. The machine is run 24/7 and production is higher than expected.
The controller was programmed using the Motion Application Programme ‘MAP’. ‘MAP’ has been used in a vast variety of machines and applications giving the user a greater control of costs, saving money and time on software development.
Point to Point move:
Items Provided By TRM for this Application:
Professional Motion Controller
1 off 3 Axis stand alone motion controller with keypad and colour screen.
24 Volts for the motion controller and the power supply for the DC servo amplifiers to run the motors using an external transformer. Screw connectors are used for connecting the Inputs/Outputs for a fast connection, On-board filtering of power supplies and signals.
1 off DC Servomotor rated at 1.2 Nm
2 off DC Servomotor rated at 4.1Nm
1 off compact current mode amplifier capable of driving brushed DC Servo motors continuously at up to 100 volts and up to 5, 10 or 20 amps depending on the model
3 off Rotary Encoder with 1000 ppr
3 off Inductive Proximity sensor for home position