Hi,
I am thinking about the possibility of making a part from PA6 or 6/6 with a highly oriented structure. I mean I need to have, for example, a disk with all the polymer chains inside it pointed toward its center. Is this possible?
The size of the part would be around 4 inches.
Dear Engineers,
I am currently working on finding a model for a specific type of polymeric actuators. A linear motion is generated by heating a string made of Nylon 6/6. I heat my actuator and then let it cool down to the room temperature and measure its length. When I plotted the...
Hi all,
I am looking for a sealing solution for isolating a pressurized air cavity (75 PSI) from the outside. A shaft is to come out of the cavity and it should be sealed to prevent the air from exiting. The rotation speed and duty cycle is low (10 RPM). The temperature of the cavity is high...
Hi engineers,
I am working on a paper recycling startup. My aim is to establish a deinking plant, which I assumed to be a key for recycling printed paper wastes. I have searched for the deinking technologies and it seems that there are two main methods: chemical-mechanical (floating, washing...
Dear engineers,
I am going to use graphite packing around a shaft to isolate a cavity from the outside. The shaft should go through the wall of a high pressure cavity (70 PSI). I chose a Klinger 40 package but I can not find any clue in the catalog or their website on the required pre-stress on...
Dear fellow engineers,
I need a flexible coupling for my mechanism. The shafts are not very big (2-3 cm in diameter). My main challenge is the ambient temperature which is up to 480 F (250 C).
Do you know any supplier who has such couplings?
the misalignment is not very high. I do not expect...
Hi friends,
I am considering the use of universal shaft between two parallel shafts. The casings of the input and output are not precisely built and I need to adjust the length of the universal shaft to install them. The spline shaft solve this problem but I may have trouble with the vibration...
Hi fellows,
I am working on design of a servo mechanism that needs shifting the rotation axis from one axis to another parallel one. I wonder If flexible shaft can be used to transmit the motion. Are flexible couplings precise in transmitting the motion or there is significant backlash or...
Hi fellows,
I am working on design of a servo mechanism that needs shifting the rotation axis from one axis to another parallel one. I wonder If flexible shaft can be used to transmit the motion. Are flexible couplings precise in transmitting the motion or there is significant backlash or...
Hi engineers,
I am looking for a rotary seal to prevent hot gas from exiting the gas pass through the clearance of the stator vanes. The vanes can rotate (they are actually nozzle guided vanes). The working temperature is 500 C and the pressure difference is 5 bar. the rotation speed is less...
Hi engineers,
My question is about the relation between gas leakage between shaft and hole clearance and tolerance of fitting. I am working on upgrade of a gas turbine by enabling one stage of its stator vanes to rotate. The vanes will rotate around their axis by means of a mechanism. The...
Hi engineers,
My question is about the relation between gas leakage between shaft and hole clearance and tolerance of fitting. I am working on upgrade of a gas turbine by enabling one stage of its stator vanes to rotate. The vanes will rotate around their axis by means of a mechanism. The...
I am going to make a linear drive by timing belt for vehicle simulation purpose. speed of the belt is not very high (150 RPM @ smaller pulley at most) and its tension is about 200 kgf. I looked at SKF timing belt catalog and the calculation showed that HDT 8M with 5 cm width is Ok but I have...
Dear Engineers, I am designing a linear drive and intending to use worm gear to drive timing belt drive pulley. I have found some servo worm gear with very low backlash . They are expensive and I can not afford them now. there are many some industrial worm gears with more backlash but much more...
