Working ideas

Cylindrical grinder is a grinder (also called top center grinder or cylindrical grinder) that grinds cylindrical steel parts into precise concentricity with two centers and a grinding wheel as the tool.

structure

The main machine is composed of bed, head, tail, grinding head, driving dust collector and other parts. The lathe head, grinding head can be rotated, special fixture for grinding thimble and leather roll chamfering, dynamic balance frame and leather roll detector are ordered by customers.

characteristic

1. The spindle bearing of the grinding wheel adopts the cone shaped oil wedge dynamic pressure bearing, and the spindle of the grinding wheel still has high bearing stiffness at low speed.

2. The grinding wheel rack guide rail adopts the cross roller rigid guide rail, and the semi-automatic feed mechanism is realized by the rotary oil cylinder.

3. The tailstock shafting is characterized by clearance free stiffness, and the electric box, hydraulic box and cooling box are separated from the machine tool.

4. Equipped with grinding indicator and coolant filter.

5. The head frame speed has the AC variable frequency stepless speed regulation.

6. The electrical system adopts programmable controller (pc), which has self diagnosis function and is very convenient for maintenance.

7. Automatic measuring instrument is optional.

purpose

Cylindrical grinder is mainly used for precision grinding of end faces, excircles and conical surfaces of shaft parts in batches. It is the main equipment in automobile engine and other industries. It is also applicable to the processing of shaft parts with small batch and high precision requirements in military, aerospace and general precision machining workshops.

⑴ It is used in textile and spinning industry, thick and thin yarn frame, drawing frame, comber, texturing machine and other upper leather roller processing.

⑵ It is used in the production and manufacturing of office communication equipment industry, fax machine, copier, printer, lettering machine and other rubber roll processing.

⑶ Suitable for printing, food, pharmaceutical industry automatic conveyor epithelial roll, plastic processing.

Influence of Machining Accuracy of Cylindrical Grinder

1. The influence of equal height of grinding head, head rest and tailstock on the dimensional accuracy of workpiece.

The equal height error of the grinding head, head rest and tailstock will cause the center line of the head rest and tailstock to deviate from the axis of the grinding wheel spindle in space. At this time, the ground workpiece surface will be a hyperboloid.

2. The influence of the parallelism error of the grinding head spindle axis in the horizontal plane caused by the center line of the head rest and tailstock on the dimensional accuracy of the workpiece.

When this error occurs, the contour of the workpiece ground by the cylindrical grinder will be a cone, that is, the grinding wheel is angled and the surface has spiral grinding lines.

3. The influence of the perpendicularity error of the grinding head movement relative to the machine tool guide rail on the machining accuracy.

The final result of this error is that the axis of the main shaft is offset from the center line of the head frame and tailstock. When grinding the end face of the shaft shoulder, the perpendicularity error between the end face of the shaft shoulder and the axis of the workpiece will be caused. When grinding the excircle, the surface roughness will be affected and spiral grinding lines will be generated.