ZCS-QGM2030 high-precision CNC grinding machine for internal cylindrical grinding, using“Nano carbon fiber materials”Air floating guide rail, the workpiece axis adopts an air static pressure permanent magnet servo electric spindle (with built-in encoder), the grinding wheel axis adopts an air static pressure permanent magnet synchronous electric spindle, the grinding wheel dressing adopts an air static pressure AC asynchronous electric spindle, the X/Z axis guide rail adopts high-precision air static pressure (air floating) guide rail, the X axis is equipped with a grid high-precision grating ruler, and the online measurement adopts a Renishaw high-precision contact displacement sensor measuring head (optional). The CNC system adopts Taiwan's new generation high-precision CNC system to form a closed-loop control system. Achieve a machining accuracy of 0.3um roundness and 1.5um cylindricity for the entire machine.

1、 Technical features:
This machine tool is suitable for grinding and processing straight holes, tapered holes, stepped holes, and blind holes of parts.
This machine tool contains two national invention patent technologies:
① A high-precision grinding machine for inner or outer circles of metal components using air static pressure.
Patent number: ZL 2011 1 0213261.8。
② A type of air floating guide rail suitable for high-precision detection or high-precision processing equipment.
Patent number: 4.
All high precision of this machine toolHydrostatic electric spindleThe air floating guide rail is made of "nano carbon fiber material", which is a high-precision air static pressure (air bearing) electric spindle with high rigidity, large load capacity, low air consumption, self-lubricating and wear-resistant properties. 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 and is equipped with a vacuum suction cup. The air static pressure grinding wheel electric spindle adopts permanent magnet synchronous motor stepless speed regulation. On one side of the workpiece head frame, there is a grinding wheel dressing air static pressure electric spindle, which is dedicated to CBN alloy steel stone grinding wheel dressing, and can also be equipped with a diamond pen dressing bracket.
The X/Z axis is driven by high-precision air bearing guide rails, high-precision ball screws, and servo drive motors. It is equipped with a Taiwanese new generation high-precision CNC system with a resolution of 0.1um and a 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 unidirectional repeated measurement accuracy of 1um. 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 CNC grinding machine for internal cylindrical grinding
model		ZCS-QGM2030
Scope of application		Grinding of straight holes, tapered holes, step holes, and blind holes in partsAnd grindingmachining
Maximum card loading diameter(mm)		Ф300
Grinding maximum aperture(mm)		Ф200
Maximum grinding hole depth(mm)		120
Height of workpiece axis and guide rail center(mm)		210
Rotation angle of workpiece headstock (degrees)		±30º
Processing accuracy	Roundness(μm)	0.2
	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		High stiffness air static pressure permanent magnet synchronous electric spindle, speed range 1--36000turn/Divide,7.5KWSynchronous drive with stepless speed regulation. Configure the dynamic balance ring. The grinding wheel adopts a straight rod type clamping, and multiple grinding wheel rods are equipped according to the product aperture range.
Workpiece axis electric spindle		High precision air static pressure electric spindle, 3KW/10Nm/1000rpmSynchronous servo motor, built-in encoder, servo drive with stepless speed regulation, speed range 1--1000turn/Divide.The standard configuration for workpiece clamping includes high-precision three jaw chuck and vacuum suction cup, and specialized fixtures can also be customized according to process requirements.
on-line measurement		RenishawmeetTouch displacement sensor probeUnidirectional repeated measurement accuracy of 1um
guide rail	XAxis guide rail	useHigh precision air static pressure (air floating) guide rail
	ZAxis guide rail	useHigh precision air static pressure (air floating) guide rail
	Xaxis(mm)	Maximum travel distance400, Resolution0.1μm
	Zaxis(mm)	Maximum travel distance400, Resolution0.1μm
CNC feed system(μm)		Adopting Taiwan's new generation 21A high-precision CNC system, with a resolution of0.1μm.
X/ZAxis drive		Both X and Z axes are driven by high-precision ball screws, as well as Taiwan's new generation high-precision servo motors and drivers.
Grating ruler		The X-axis adopts a Spanish Fagor grating ruler with a resolution of0.1μm.YThe axis can be equipped with a grating ruler.
Handwheel feed rate per grid(um)		Minimum feed rate 0.1
Grinding wheel dressing		Specially designed for diamond grinding wheel dressing, using an air static pressure electric spindle of 1.5KW, 1-20000rpm, and variable frequency stepless speed regulation. (Equipped with diamond rollers, specifically designed for diamond grinding wheel dressing)
Electric spindle cooling water tank and water pump		Independent cooling water tank and water pump
Cutting fluid filtration water tank and water pump		Independent cooling water tank and water pump, equipped with paper tape filter machine
Water mist recycling and filtration system		Configure a dedicated water mist recovery filter machine
compressed air		Compressed air supply pressure range 0.45-0.55Mpa, total air consumption less than 300L/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 undergo professional training 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 (22 ℃± 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.
3. Requirements for compressed air and cooling water:
Compressed air needs to be processed by a freeze dryer, with a temperature of 17-19 ℃, a pressure of 0.55-0.65Mpa, a supply volume greater than 300L/min, and a filtration accuracy of 0.01um. The main shaft cooling water needs to be cooled by a chiller unit, with a temperature of 17-19 ℃, a pressure of 0.3Mpa, and a flow rate of 2 L/min.