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US 11,305,397 B2Granted
Lapping system that includes a lapping plate temperature control system, and related methods
AssigneeSeagate Technology LLC
InventorsAndrew Habermas, Dat Quach, Jeff O'Konski, Yuhong Xiong, Ricky Anderson, Joshua Zierhut
Life of this patent
Estimating the term…
Abstract
The present disclosure includes a lapping system that includes a temperature control system system to heat or cool the lapping plate while lapping. The temperature control system can include a closed circuit fluid system and/or one or more electrical resistive heating elements. In some embodiments that cooling system can control the temperature of the lapping plate during lapping to within +/−5° C., or even +/−0.5° C.
Claims19
A method of lapping a slider or row bar having a plurality of sliders, wherein the method comprises:
- a) lapping the slider or the row bar having a plurality of sliders by contacting a surface of the slider or row bar having a plurality of sliders with a rotating lapping plate, wherein the slider comprises one or more electronic lapping guides or wherein each of the plurality of sliders comprises one or more electronic lapping guides;
- b) controlling the temperature of the lapping plate to a target temperature +/−0.3° C. during at least a portion of the lapping, wherein controlling comprises:
- i) measuring a surface of the lapping plate that faces the surface of the slider or row bar having a plurality of sliders during lapping, wherein the temperature of the surface of the lapping plate that faces the surface of the slider or row bar is measured via a temperature sensor comprising an infrared sensor;
- and
- ii) providing the measured temperature of the surface of the lapping plate to a control system that controls the temperature of the lapping plate.
2 more elements
A lapping system comprising:
- a) a mounting structure that is configured to removably couple a row bar comprising a plurality of sliders, wherein each of the plurality of sliders comprises one or more electronic lapping guides,
- b) a lapping plate having a lapping surface that is operable to rotate and contact the row bar for lapping each slider;
- and
- c) a temperature control system operatively coupled to the lapping plate and configured to control the temperature of the lapping plate to a target temperature +/−0.3° C. during at least a portion of the lapping, wherein the temperature control system comprises:
- i) a temperature sensor comprising an infrared sensor;
- and
- ii) a controller that is configured to execute program instructions comprising:
- A measuring a surface of the lapping plate that faces the surface of the row bar having a plurality of sliders during lapping, wherein the temperature of the surface of the lapping plate that faces the surface of the row bar is measured via the infrared sensor;
- and
- B) providing the measured temperature of the surface of the lapping plate to the controller to adjust the temperature of the lapping plate.
7 more elements
A lapping system comprising:
- a) a mounting structure that is configured to removably couple a row bar comprising a plurality of sliders, wherein each of the plurality of sliders comprises one or more electronic lapping guides,
- b) a lapping plate having a lapping surface that is operable to rotate and contact the row bar for lapping each slider;
- and
- c) a temperature control system operatively coupled to the lapping plate and configured to control the temperature of the lapping plate to a target temperature +/−0.3° C. during at least a portion of the lapping, wherein the temperature control system comprises:
- i) a temperature sensor comprising an infrared sensor;
- ii) a controller that is configured to execute program instructions comprising:
- A) measuring a surface of the lapping plate that faces the surface of the row bar having a plurality of sliders during lapping, wherein the temperature of the surface of the lapping plate that faces the surface of the row bar is measured via the infrared sensor;
- and
- B) providing the measured temperature of the surface of the lapping plate to the controller to adjust the temperature of the lapping plate;
- and
- iii) one or more electrical resistive heating elements coupled to the lapping plate, wherein the temperature control system is operative to heat the lapping plate by supplying electrical power to the one or more electrical resistive heating elements to increase the temperature of the lapping plate.
8 more elements
A lapping system comprising:
- a) a mounting structure that is configured to removably couple a row bar comprising a plurality of sliders, wherein each of the plurality of sliders comprises one or more electronic lapping guides,
- b) a lapping plate having a lapping surface that is operable to rotate and contact the row bar for lapping each slider;
- and
- c) a temperature control system operatively coupled to the lapping plate and configured to control the temperature of the lapping plate to a target temperature +/−0.3° C. during at least a portion of the lapping, wherein the temperature control system comprises:
- i) a temperature sensor comprising an infrared sensor;
- ii) a controller that is configured to execute program instructions comprising:
- A) measuring a surface of the lapping plate that faces the surface of the row bar having a plurality of sliders during lapping, wherein the temperature of the surface of the lapping plate that faces the surface of the row bar is measured via the infrared sensor;
- and
- B) providing the measured temperature of the surface of the lapping plate to the controller to adjust the temperature of the lapping plate;
- and
- iii) a closed fluid supply system that is coupled to the lapping plate so that heat transfers to the lapping plate from fluid or from the lapping plate to fluid, when fluid flows through the closed fluid supply system, to control the surface of the lapping plate that faces the surface of the row bar having a plurality of sliders during lapping.
8 more elements
Dependencies are inferred from the claim text.