What is the difference between ordinary cylindrical grinding and centerless cylindrical grinding?
Ordinary Cylindrical Grinding. Ordinary cylindrical grinding, as shown in the figure below, utilizes the top holes at both ends of the workpiece to support the workpiece between the headstock and the top of the tailstock of the grinder, with the workpiece rotating under the drive of the main spindle and the grinding wheel feeding transversely during grinding.
Centerless Cylindrical Grinding. Centerless Cylindrical Grinding It has no headstock and tailstock, but the workpiece is supported by pallets and guide wheels, and grinding is carried out by grinding wheels. Centerless grinding method it is composed of three mechanisms: grinding wheel, adjusting wheel and workpiece holder, in which the grinding wheel actually serves as the work of grinding, the adjusting wheel controls the rotation of the workpiece and enables the workpiece to incur the feed speed, and the workpiece holder supports the workpiece during grinding. Centerless cylindrical grinding machine has high productivity. More for mass production, easy to realize automation.
Advantages of Centerless Cylindrical Grinding over Ordinary Cylindrical Grinding
1. Continuous processing, no need to back off the tool, short time for workpiece clamping, etc., high productivity.
2. the bracket and guide wheel positioning mechanism than ordinary cylindrical grinding machine top, center frame mechanism supporting good rigidity, the cutting volume can be larger, and is conducive to the processing of long and thin shaft workpieces, easy to achieve high-speed grinding and powerful grinding.
3. centerless cylindrical grinding machine workpiece by the outer circle in the positioning mechanism, the grinding amount is the workpiece diameter on the margin, so the grinding wheel wear, feed mechanism compensation and cut into the body of the repeated positioning accuracy error on the diameter of the parts size accuracy of the impact of only half of the ordinary cylindrical grinding machine, do not need to play the center hole, and easy to prior to loading and unloading automation.
4. wide grinding wheel centerless grinder through the type of mechanism, can be used to increase the processing allowance each time, in the plunge-cut grinding can be on the complex shape of the surface in order to shape grinding or multi-grinding wheel grinding, high productivity, applicable to a wide range.
5. Centerless cylindrical grinding machine has no mechanism to ensure the relative positional accuracy (coaxiality, perpendicularity, etc.) of the grinding surface and the non-grinding surface, and the roundness is poor in grinding the circumferential intermittent external surface.
6. The grinding surface is prone to produce an odd number of roundness, such as larger often cause the illusion that the measured size is smaller than the largest solid size, which affects the quality of assembly and work performance.
7. machine adjustment is more complex, time-consuming, every replacement of different diameter workpiece will need to punch adjust the height of the bracket, and distance and related process parameters. Therefore, the adjustment of technical difficulties, is not suitable for small batch and single piece production.
Moresuperhard Centerless Grinding Solutions:
Centerless Grinding Wheels
► Application: grinding carbide, ceramic, magnetic materials, stainless steel bar, PCD & PCBN compositives
► Model: 1A1 , 6A1, 9A1
► Bonded Type: Resin bond, Metal bond
► Centerless Grinder Machine: Koyo, Crystec, Dedtru, Landis , Okuma, Paragon, Royal Master, Unison, WMV
►High Precision Centerless Grinding Machines Models:
-FX12CNC
-FX18CNC-4
►Broad Applications:
-Automotive Industry: shafts, pins, valves, and bearings
-Aerospace Industry: turbine shafts, landing gear components, and fuel system parts
-Medical Industry
-Tool and Die Industry
-Bearings industry
-Tool and Die Industry: cutting tools, punches, and dies with high accuracy and surface quality
High Precision with High Rigidity Body Structure