Claims
- 1. In an abrading device, the combination of:
- an upper lap plate and lower lap plate, each mounted for rotation about an axis and having an outer rotary portion and inner rotary portion adjacent the axis of rotation; and
- a temperature control device comprising,
- at least one tube disposed adjacent the lower lap plate for coolant fluid flow, the at least one tube includes a first end centrally located relative to the abrading device adjacent the axis of rotation and a second end located outwardly of the first end adjacent the outer rotary portions,
- fluid supply lines capable of supplying coolant fluid to the at least one tube at both the first end and the second end, and
- means for reversing the coolant flow supply from the first end to the second end while the abrading device is operational for effectuating more even temperature control across the lap plates.
- 2. In an abrading device in accordance with claim 1 wherein the at least one tube is wound in a spiral coil configuration about the axis of rotation from the first end to the second end.
- 3. In an abrading device in accordance with claim 2 wherein the at least one tube is wound in the spiral configuration in substantially the same plane about the axis of rotation from the first end to the second end.
- 4. In an abrading device in accordance with claim 1 wherein the at least one tube is mountable to the lower lap plate.
- 5. In an abrading device in accordance with claim 4, the combination further of a lower plate located below the lower lap plate, wherein the temperature control device comprises further that the at least one tube is housed in the lower plate.
- 6. In an abrading device in accordance with claim 1 wherein the temperature control device further comprises:
- a coolant supply tank;
- a supply pump for continuously supplying coolant fluid from the coolant supply tank;
- the fluid supply lines being supplied with coolant fluid by the supply pump and having at least a first coolant supply line for supplying coolant fluid to the first end of the tube and a second coolant supply line for supplying coolant fluid to the second end of the tube; and
- the means for reversing coolant fluid flow comprising a plurality of directional control valves for directing the coolant fluid through either the first supply line to the first end of the tube or the second supply line to the second end of the tube depending on the temperature of lap plates for effectuating more even temperature across the lap plates.
- 7. In an abrading device in accordance with claim 6 wherein the temperature control device further comprises a plurality of coolant return lines for returning coolant fluid supplied to the tube to the coolant supply tank, the coolant return lines including at least a first coolant return line to return coolant supplied to the tube at the first end and a second coolant return line to return coolant supplied to the tube at the second end, and each return line having a directional control valve adjusted to complement the directional control valves of the supply lines for returning the coolant fluid.
- 8. In an abrading device in accordance with claim 7 wherein the directional valves are each a two-way directional control valve with solenoid actuators.
CROSS REFERENCE TO RELATED APPLICATION
This is a division of U.S. patent application Ser. No. 08/638,678, filed Apr. 29, 1996, currently pending which in turn is a division of U.S. patent application Ser. No. 08/218,611, filed Mar. 28, 1994, now U.S. Pat. No. 5,595,529, issued Jan. 1, 1997.
US Referenced Citations (7)
Foreign Referenced Citations (3)
Number |
Date |
Country |
8040265 |
Mar 1983 |
JPX |
8196967 |
Nov 1983 |
JPX |
4053671 |
Feb 1992 |
JPX |
Divisions (2)
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Number |
Date |
Country |
Parent |
638678 |
Apr 1996 |
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Parent |
218611 |
Mar 1994 |
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