High precision internal and external CNC grinding machine-Fornitore globale

ZCS-QGM3050 high-precision internal and external cylindrical CNC grinder, with workpiece axis usingHydrostatic electric spindleThe grinding wheel shaft adopts an air static pressure grinding wheel electric spindle, and the grinding wheel dressing adopts an air static pressure electric spindle. The X/Z axis guide rails are high-precision air floating guide rails+linear motors, and the CNC system adopts Siemens 828 high-precision CNC system. Achieve a machining accuracy of 0.5um roundness and 1.5um cylindricity for the entire machine. The specific technical parameters are as follows:

1、 Technical features:

This machine tool contains two national invention patent technologies:
① An inner or outer circular ultra precision grinding machine for metal components under hydrostatic pressure.
Patent number: ZL 2011 1 0213261.8。
② A type of air floating guide rail suitable for ultra precision inspection or ultra high precision machining equipment.
Patent number: 4.
This machine tool is suitable for cylindrical outer circle, inner hole, end face, conical surface, spherical surface, thread, curve, multi-stage cylindrical outer inner hole, end face grinding and grinding processing.
All high-precision air static pressure electric spindles and air floating guides of this machine tool are made of "nano carbon fiber materials", which are high rigidity, large load-bearing, low air consumption, self-lubricating and wear-resistant high-precision air static pressure (air bearing) electric spindles. It has the characteristics of low-carbon, green, environmentally friendly, and wear-resistant.
The pneumatic static pressure workpiece electric spindle adopts a servo motor with a built-in encoder for high-precision indexing positioning, and is equipped with a Φ 300 vacuum suction cup. The air static pressure grinding wheel electric spindle adopts an AC variable frequency motor for stepless speed regulation. On one side of the workpiece head frame, there is an electric spindle for grinding wheel dressing, specifically designed for CBN alloy steel stone grinding wheel dressing. It can also be replaced with a diamond pen dressing bracket.
The X/Z axis adopts high-precision air floating guide rails+linear motors, Siemens 828 high-precision CNC system with a resolution of 0.1um, and Spanish Fagor high-precision grating ruler, forming a fully closed-loop control system. Achieve a machining accuracy of 0.5um roundness and 1.5um cylindricity for the entire machine.
A Renishaw contact displacement sensor probe is installed on the front side of the grinding wheel holder, with a one-way repeated measurement accuracy of 0.25um. It can measure the inner and outer diameters, length, and end face of the workpiece online. The measuring device is placed on the side of the inner circular grinding wheel holder and can automatically rotate.
The standard configuration for workpiece clamping includes high-precision three jaw chuck and vacuum suction cup. Special fixtures can also be customized according to process requirements, and the headstock can be manually rotated ± 45 degrees.
The main structural components of the machine tool are made of high-quality mineral bed (artificial marble), which has stable organization and solid structure. Fully enclosed outer cover.
The grinder is equipped with pressure sensors at the inlet of the air and water circuits, which have fault alarm protection functions such as overcurrent, overload, air pressure below the lower limit, and cooling water cut-off. And it has communication function with the upper computer (RS-485).

2、 Main Technical Parameters Table of the Whole Machine

Product Name		High precision inner and outer circular air floating CNC grinder
model		ZCS-QGM3050
Invention Patent		①Air floating grinder（Patent number: ZL 2011 1 0213261.8） ②Air floating guide rail（Patent number: ZL 2015 1 0300840.4）
trademark		ZCS (China Chuanshun)
Scope of application		Cylindrical outer circle, inner hole, end face, conical surface, spherical surface, thread, curve, multi-stage cylindrical outer inner hole, end face grinding processing.
Maximum grinding diameter range(mm)		300
Maximum grinding length range(mm)		200
Maximum grinding aperture range(mm)		Ф200
Maximum grinding hole depth(mm)		125
Height of workpiece axis and guide rail center(mm)		210
Rotation angle of workpiece headstock (degrees)		±45
Processing accuracy	Roundness(μm)	0.5
	Cylindricity(μm)	1.5
	Surface roughness(Ra/μm)	0.1
	Grinding wheel electric spindle	Rotation accuracy<0.2umRadial runout of shaft head ≤0.3umAxial movement ≤0.3um
	Workpiece electric spindle	Rotation accuracy<0.2umRadial runout of shaft head ≤0.3umAxial movement ≤0.3um
Grinding wheel electric spindle		Rigid air static pressure AC asynchronous electric spindle, speed range 0--24000turn/Divide,7.5KWDelta AC frequency converter.Adopting a straight rod type grinding wheel rod to clamp the grinding wheel, and equipped with a dynamic balance ring.
Workpiece electric spindle		High precision air static pressure electric spindle, 10Nm/3000rpmAC servo motor, built-in encoder, adjustable positioning, stepless speed regulation, speed range 0--3000turn/Divide. Configure K125 high-precision three jaw chuck and Φ 300Vacuum suction cup card installation.
on-line measurement		RenishawmeetTouch displacement sensor probeUnidirectional repeated measurement accuracy of 0.25um
guide rail	XAxial air floating guide rail stiffness	useHigh precision air static pressure(Air flotation)Guide rail, stiffness500N/μm
	Y/ZAxial air floating guide rail stiffness	useHigh precision air static pressure(Air flotation)Guide rail, stiffness500N/μm
	Xaxis(mm)	X-axis guide rail length 1000mm, maximum travel400, Resolution0.1μm
	Zaxis(mm)	Z-axis guide rail length 750mm, maximum travel400, Resolution0.1μm
CNC feed system(μm)		Adopting Siemens 820 high-precision CNC system with a resolution of0.1μm.
Linear motor		Both X and Z axes are driven by high-precision linear motors from Singapore's Yakobeys.
Grating ruler		The X/Z axes are both measured using a Spanish Fagor grating ruler, with a resolution of0.1μm
Y/ZAxis positioning accuracy(μm)		±2
Y/ZAxis repeatability positioning accuracy(μm)		±1.5
Handwheel feed rate per grid(um)		0.1
Grinding wheel dressing		Special air electric spindle 0.75KW, 20000rpm for diamond grinding wheel dressing, can also be equipped with a diamond pen dressing bracket
Electric spindle cooling water tank and water pump		Independent cooling water tank and water pump
Cutting fluid water tank and water pump		Independent water tank and pump
Bed frame		Adopting high-qualityMineral bed frame (artificial marble)
compressed air		Compressed air supply pressure range 0.5-0.6Mpa, total air consumption 200L/min
External parameters		Working pressure0.5～0.8Mpa, power supply380V，50Hz, overall power8KW
		External dimensions2400×1600×2000 (including base and electrical box), net weight3200Kg

3、 Installation requirements for use
1. Operator requirements: This machine tool is a high-precision CNC grinder, and the operator is required to have basic skills in operating CNC grinders. They must receive training from Party B and master the operating procedures before they can use it.
2. Installation and environmental requirements:
The fluctuation of the power supply voltage should be within ± 10%, and the working temperature should be installed in a constant temperature room (20 ℃± 2 ℃) with a humidity of less than 75%. The installation should be away from the seismic source, and if conditions permit, isolation trenches can be used. The equipment should be placed horizontally with a levelness of less than 0.02mm, and adjustable shims can be used to adjust the level.

4、 Internal structure of machine tool