X-axis clearance too much fault repair Symptom: A CNC machine tool supporting FANUC OMC model XH754 has too large X-axis clearance. Analysis and processing: X-axis clearance consists of coupling clearance, bearing clearance, screw clearance, mechanical elastic clearance and other components. Remove the X-axis guard plate, shut down the power supply, hold the screw by hand, and turn back and forth, feeling a larger free corner, a larger gap; adjust the X-axis screw bearing clearance, tighten the nut to tighten it and no improvement, so I suspect there is a problem with the screw nut. Loosen the screw nut and the worktable and check that no gap is found. Then open the bearing seat flange and check the screw bearing. Find that the inner ring of the two-point contact bearing (back-to-back) has been tightened together. Under normal circumstances, there should be The gap indicates that there is no room for adjustment of the bearing clearance. X-axis encoder alarm fault repair Symptoms: A CNC machine tool supporting the FANUC OMC model XH754 has 319 alarms during processing. Overhaul alarm fault repair Symptoms: A CNC machine tool supporting the FANUC OMC model XH754 generates an overtravel alarm “OVER TRAVEL-X†when the X axis returns to zero.
Internal rubber mixer mainly used for rubber molding and mixing of rubber, is a machine equipped with a pair of specific shapes and relative to the rotation of the rotor, adjustable temperature and pressure in the sealed state of the polymer material on the plastic and mixing of the mechanical, mainly composed of the mixing chamber, rotor, rotor seal device, feeding pressure material device, discharge device, transmission and chassis and other components.
This machine is suitable for EVA, rubber,synthetic rubber,hot melt and all kinds of chemistry raw material
to mix ,mediate and disperse, and then put into the mass production.
75L kneader mixer
Hard tooth gear reducer with well-design structure, low noise, high efficiency and long service life. The mixing shaft is made of nickel & chrome alloy steel. The high abrasion part is additional welded with imported anti abrasion welding rod, then electroplating with hard chrome which is more durable.The main mixing chamber is whole set casting by high anti abrasion alloy steel, after special dealing then electroplating with hard chrome.The anti leakage unit of side wall is made of high-tech material which is wear-resisting and easy to maintain. [M" shape of the pressure gland which make the mixing more thorough and even. The main motor ampere meter is installed in the electrical control panel, under normal running, when the pressure of the mixing chamber is too big, the current exceeds the set value, the connector will automatically adjust the gland`s up and down via the magnetic valve to remit the pressure of the mixing chamber. The mixing chamber is bigger, the diameter of the air cylinder is bigger and gear reducer is also bigger, which enhance the mixing effect,save mixing time and also save the cost.
Main parameter
Mixing capacity(L)
75L
Motor power
110KW 6P AC
Material feeding
Front/back
Temperature adjustment
Steam heating or water cooling
Mixing capacity per batching
About 70-80kgs/time
Mixing time
4-8mins/batching
Rotor RPM
RPM
Temperature difference
±5º
gear reducer
ZLY375
Gear width
Input 110mm, output 140mm
Tilting angle
140°
Main air cylinder size (mm)
360×900
Piston rod diameter (mm)
120
Mixing chamber size (mm)
610×600×725
Two rotors center to center space (mm)
355
Rotor bearing diameter (mm)
140
Machine size(mm)
3900x2900x3400
Machine weight(kg)
9500
Internal Mixer,Turnover Internal Mixer,Internal Rubber Mixer,Pressure-Type Internal Mixer SHIJIAZHUANG LONGXUAN TRADING CO., LTD , https://www.longxuanmachines.com
According to the outer diameter of the bearing, a small ring pad with a thickness of lmm is used to subtract the original gap in the middle of the pair of bearing outer diameters, so that the inner ring of the pair of bearings has a clearance adjustment margin of about 0.8 mm. After installation, tighten the bearing back-up nut properly, set parameter 0535 to 0, measure the X-axis clearance with the dial indicator to 0.02mm, set parameter 0535 to 15 and measure the X-axis clearance to 0.01mm. The X-axis clearance can be eliminated. .
Analysis and processing procedures: Check the maintenance manual, indicating that the cause of the fault is an X-axis pulse encoder abnormality or communication error. Check the diagnosis number 760 and find that it has multiple positions. The maintenance manual prompts that the pulse encoder is defective or the feedback cable is defective. The X-axis encoder cable plug M185 is normally detected first, so it is judged that there is a problem with the X-axis serial encoder. To confirm that M184 and M194, M185 and M195 and the corresponding motor three-phase drive lines were exchanged in the cabinet, the fault alarm was changed to 339, and the fault became Z-axis, confirming that the X-axis encoder was defective. After the replacement, troubleshooting.
Analysis and processing: Check that the X-axis alarm is far from the stroke limit, and the X coordinate displayed on the display exceeds the X-axis range, so the confirmation is a soft limit over-travel alarm. Check the parameter 0704 normal, power off, hold down the P key and turn on the NC power at the same time, complete the zero return under the condition that the system does not check the soft limit; also can change the 0704 to -99999999 and back to zero, if no problem, Then change it back to the original value; you can also press the P key and CAN key to turn on the power to eliminate the alarm.