Technical parameters of IG100 Internal Cylindrical Grinder

Main parameters	Unit	IG100
Grinding hole diameter	mm	Φ6~100 (0.24-3.9”)
Grinding hole depth	mm	150 (5.9”)
Workpiece swivel diameter (inside)	mm	Φ260 (10”)
Workpiece swivel diameter (outside)	mm	Φ400 (16”)
Headstock spindle maximum load-bearing		50kg
Worktable travel	mm	550 (22”)
Headstock swivel angle	°	20°
Workpiece rotate speed	r/min	180/250/355/500
Max rotate speed of grinding spindle	r/min	10000/18000
Working table speed	m/min	0.1~8
Maximum travel of feeding slide	mm	80
Feeding rate of feeding handwheel per rotation	mm	0.32
Feeding rate of feeding handwheel per grid	mm	0.002
Adjusting handwheel per rotation	mm	0.01
Adjusting handwheel per grid	mm	2
Power of workpiece motor	kW	0.45/0.75
Power of grinding wheel motor	kW	2.2
Power of hydraulic motor	kW	0.75
Power of cooling motor	kW	0.09
Power of end face grinding motor	kW	0.75
Roundness	mm	0.002
Cylindricity	mm	0.003
Roughness	Ra	0.32
Machine weight	kg	2550
Overall dimension (L x W x H)	mm	2363x1260x1650

Equipments
1.Internal grinder;
2. Cooling device;
3. Grinding device;
4. Three jaw chuck;
5. Special greases;
6. Chuck wrench;
7. V-belt;
8. Endless rubber nylon belt;
9. Bush;
10. Flange;
11. Outer hexagonal bolts;
12. Inner hexagonal bolts;
13. Joint shaft assembly;
14. Belt pulley;
15. Puller screw;
16. Wheel recessed one side;
17. Parallel grinding wheel;
18. Operational instruction;
19. Certificate of conformity;
20. Packing list;
21. Work table cover;
 
Optionals
1. Magnetic separator;
2.Paper filter;         
3. Digital readout;
4. End face grinding device;
 
Appliance and main specifications
This machine is a chuck-type internal grinder capable of grinding cylindrical and conical through holes or blind holes in single piece or small batch production. The grinding wheel of the machine is made for cross feed, while the workpiece for longitudinal reciprocating movement. The machine is light in weight and occupies less floor space.
The longitudinal reciprocating movement of the table is carried out hydraulically and its speed can be varied stepless. The change of the fast advance, retraction, grinding and dressing of the table is automatically performed. Wheel dressing is controlled by a hydraulic handle.
The cross feed of the grinding wheel is performed either manually or hydraulically. In case of hydraulic feed, the wheel makes an automatic feed motion with each reciprocation of the table (i.e. periodic feed). The feed increment can be adjusted stepless.
The feed system is equipped with a jumping mechanism, with which the grinding wheel can take the jump-in and jump-out movements. Wheel dressing is carried out at the fixed position with the grinding wheel jumped out, while grinding is performing at the place the grinding wheel jumps in. The feed termination is controlled by means of a dead stop which offices a high repeatable positioning accuracy in sizematic gending in batch production.
There are two driving chains in the feeding system: one is used for grinding and the other for adjustment and dressing feed. They are not interfered with each other. During grinding, the handwheel doesn't advance or retract frequently and the operator doesn’t have to remember the position of the graduation disc so that it’s easy and convenient to make adjustment and operation.
The length of the worktable fast retraction can be adjusted within certain range to meet the demands of different work-piece lengths and measurement. In this way, the idle reduced and the efficiency improved.
The electrical control equipment is centralized in the electrical cabinet mounted on the right side of the machine bed so that it is convenient for operator and maintenance. Safety measure is taken in the power switch to automatically cut off the power to prevent from electrical shock.
 
 Internal Grinders
FORTUNE PACIFIC has a full line of small diameter Internal Cylindrical Grinding Machines, also knows as ID grinders. From multi work-head/multi spindle machines, to hydrostatic ways and linear motors, FORTUNE PACIFIC has the ability to hold ultra tight tolerances on bores, angles, and faces. Our ID grinders are very popular for fuel injector grinding in the automotive industry.

A grinding machine, often shortened to grinder, is any of various power tools or machine tools used for grinding, which is a type of machining using an abrasive wheel as the cutting tool. Each grain of abrasive on the wheel's surface cuts a small chip from the workpiece via shear deformation.

Grinding is used to finish workpieces that must show high surface quality (e.g., low surface roughness) and high accuracy of shape and dimension. As the accuracy in dimensions in grinding is of the order of 0.000025 mm, in most applications it tends to be a finishing operation and removes comparatively little metal, about 0.25 to 0.50 mm depth. However, there are some roughing applications in which grinding removes high volumes of metal quite rapidly. Thus, grinding is a diverse field.

Overview
The grinding machine consists of a bed with a fixture to guide and hold the work piece, and a power-driven grinding wheel spinning at the required speed. The speed is determined by the wheel’s diameter and manufacturer’s rating. The grinding head can travel across a fixed work piece, or the work piece can be moved while the grind head stays in a fixed position.

Fine control of the grinding head or table position is possible using a vernier calibrated hand wheel, or using the features of numerical controls.

Grinding machines remove material from the work piece by abrasion, which can generate substantial amounts of heat. To cool the work piece so that it does not overheat and go outside its tolerance, grinding machines incorporate a coolant. The coolant also benefits the machinist as the heat generated may cause burns. In high-precision grinding machines (most cylindrical and surface grinders), the final grinding stages are usually set up so that they remove about 200 nm (less than 1/10000 in) per pass - this generates so little heat that even with no coolant, the temperature rise is negligible.

Equipments
1.Internal grinder;
2. Cooling device;
3. Grinding device;
4. Three jaw chuck;
5. Special greases;
6. Chuck wrench;
7. V-belt;
8. Endless rubber nylon belt;
9. Bush;
10. Flange;
11. Outer hexagonal bolts;
12. Inner hexagonal bolts;
13. Joint shaft assembly;
14. Belt pulley;
15. Puller screw;
16. Wheel recessed one side;
17. Parallel grinding wheel;
18. Operational instruction;
19. Certificate of conformity;
20. Packing list;
21. Work table cover;
 
Optionals
1. Magnetic separator;
2.Paper filter;         
3. Digital readout;
4. End face grinding device;

Technical parameters of IG100 Internal Cylindrical Grinder

Main parameters	Unit	IG100
Grinding hole diameter	mm	Φ6~100 (0.24-3.9”)
Grinding hole depth	mm	150 (5.9”)
Workpiece swivel diameter (inside)	mm	Φ260 (10”)
Workpiece swivel diameter (outside)	mm	Φ400 (16”)
Headstock spindle maximum load-bearing		50kg
Worktable travel	mm	550 (22”)
Headstock swivel angle	°	20°
Workpiece rotate speed	r/min	180/250/355/500
Max rotate speed of grinding spindle	r/min	10000/18000
Working table speed	m/min	0.1~8
Maximum travel of feeding slide	mm	80
Feeding rate of feeding handwheel per rotation	mm	0.32
Feeding rate of feeding handwheel per grid	mm	0.002
Adjusting handwheel per rotation	mm	0.01
Adjusting handwheel per grid	mm	2
Power of workpiece motor	kW	0.45/0.75
Power of grinding wheel motor	kW	2.2
Power of hydraulic motor	kW	0.75
Power of cooling motor	kW	0.09
Power of end face grinding motor	kW	0.75
Roundness	mm	0.002
Cylindricity	mm	0.003
Roughness	Ra	0.32
Machine weight	kg	2550
Overall dimension (L x W x H)	mm	2363x1260x1650

Appliance and main specifications
This machine is a chuck-type internal grinder capable of grinding cylindrical and conical through holes or blind holes in single piece or small batch production. The grinding wheel of the machine is made for cross feed, while the workpiece for longitudinal reciprocating movement. The machine is light in weight and occupies less floor space.
The longitudinal reciprocating movement of the table is carried out hydraulically and its speed can be varied stepless. The change of the fast advance, retraction, grinding and dressing of the table is automatically performed. Wheel dressing is controlled by a hydraulic handle.
The cross feed of the grinding wheel is performed either manually or hydraulically. In case of hydraulic feed, the wheel makes an automatic feed motion with each reciprocation of the table (i.e. periodic feed). The feed increment can be adjusted stepless.
The feed system is equipped with a jumping mechanism, with which the grinding wheel can take the jump-in and jump-out movements. Wheel dressing is carried out at the fixed position with the grinding wheel jumped out, while grinding is performing at the place the grinding wheel jumps in. The feed termination is controlled by means of a dead stop which offices a high repeatable positioning accuracy in sizematic gending in batch production.
There are two driving chains in the feeding system: one is used for grinding and the other for adjustment and dressing feed. They are not interfered with each other. During grinding, the handwheel doesn't advance or retract frequently and the operator doesn’t have to remember the position of the graduation disc so that it’s easy and convenient to make adjustment and operation.
The length of the worktable fast retraction can be adjusted within certain range to meet the demands of different work-piece lengths and measurement. In this way, the idle reduced and the efficiency improved.
The electrical control equipment is centralized in the electrical cabinet mounted on the right side of the machine bed so that it is convenient for operator and maintenance. Safety measure is taken in the power switch to automatically cut off the power to prevent from electrical shock.