US3651605A - Grinding machines - Google Patents
Grinding machines Download PDFInfo
- Publication number
- US3651605A US3651605A US10136A US3651605DA US3651605A US 3651605 A US3651605 A US 3651605A US 10136 A US10136 A US 10136A US 3651605D A US3651605D A US 3651605DA US 3651605 A US3651605 A US 3651605A
- Authority
- US
- United States
- Prior art keywords
- probe
- relative
- workpiece
- mounting means
- mounting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
Definitions
- This invention relates to grinding machines and more particularly to the matching of the diameters of two rolls or other cylindrical workpieces ground consecutively on a grinding machine.
- An object of the present invention is to provide a grinding machine in which the matching operation is simplified.
- a grinding machine for matching the diameters of two workpieces, comprising means for supporting each of the workpieces in turn for rotation, a grinding wheel, means for effecting relative in-feed and traverse between the workpiece and the grinding wheel, and means for measuring the position of the surface of the workpiece relative to a datum position.
- FIG. 1 is a schematic plan view of a grinding machine suitable for use in the present invention.
- FIG. 2 is a view showing part of a grinding machine according to the present invention of the type shown in FIG. 1 fitted with measuring means.
- the grinding machine for matching the diameter of a pair of rolls comprises a bed 1, a pair of roll journal rests 2 adapted to support a roll 3 about a known axis.
- a grinding wheel 4 for longitudinal and in-feed movement relative to the roll 3 in known manner on slides 4a and 4b, respectively.
- a bottom in-feed slide 5 mounted on a carriage 6 on the bed 1 carries a top in-feed slide 7 upon which is mounted a support 8 carrying a gauge measuring head 9 or probe which is connected with an indicator 10 for measuring axial movement of the probe relative to the support.
- a feed screw 11 rotatable through a worm l2 and worm wheel 13 is provided for moving the bottom slide 5 to cause infeed or out-feed thereof, and thus the probe 9, relative to the roll 3.
- a print-out l4 and a digital read-out 15 are connected with a rotary resolver 16 connected with the feed screw 11 and are set to read twice the distance between the probe 9 and the axis of rotation of the roll 3 when the indicator 10 connected with the probe measures zero.
- the indicator 10 is arranged to read zero when the probe 9 is fully extended relative to its support 8.
- a fixed stop 17 is carried by the bottom slide 5 and serves to limit in-feed movement of the top slide 7 relative to the bottom slide 5.
- a first roll 3 is mounted in the roll journal rests 2 for rotation about the above-mentioned known axis.
- the top slide 7 abutting the stop 17 on the bottom slide 5
- the latter is advanced towards the roll 3 until the probe 9 just touches the surface of the roll 3 to be ground.
- the print-out l5 and the read-out 14 indicate the diameter of the unground roll 3.
- the bottom slide 5 is then advanced further so that the probe 9 is depressed and the indicator 10 measures the distance by which it is depressed.
- the advance or in-feed of the bottom slide 5 is continued until the indicator 10 reads a distance equivalent to the amount of metal to be removed from the roll 3, said amount being predetermined for the condition of the pair of rolls being matched.
- the read-out l4 and the print-out 15 measure twice the distance between the probe and the axis of rotation of the roll when the grinding operation on that roll is complete i.e., the diameter of the roll after grinding.
- the grinding operation is then commenced and is continued until the indicator 10 reads zero again i.e., until the actual diameter of the roll 3 equals the value given by the print-out l5 and read-out 14.
- One or more finishing passes of the grindin wheel 4 may be required subsequent] hen, wIthout moving the bottom sli e 5, the top slide 7 is moved away from the fixed stop 17 to enable the ground first roll to be replaced by a second roll whose diameter is to be matched to that of the first roll.
- the second roll is mounted accurately for rotation about the same known axis as the first roll.
- the top slide 7 is then moved against the fixed stop 17 thus causing the probe 9 to contact the surface of the second roll and to be depressed relative to the support 8.
- the distance of depression is shown on the indicator l0 and is a measure of the amount of metal to be removed from the second roll to reduce it to the same diameter as the ground first roll.
- the grinding operation is commenced and continued until the indicator 10 reads zero.
- the diameters of the two rolls are accurately matched.
- top slide 7 is not an essential part of a grinding machine according to the present invention, since the bottom slide 5 could carry the probe support 8 directly and could be retracted to allow the second roll to be loaded into the machine and then advanced until the read-out 14 and print-out 15 showed the same value as that before retraction.
- Absolute measurements can be taken by fixing a linear measuring device (not shown) to the bottom slide 5 and having the datum for this measuring device fixed relative to the center of rotation of the workpiece.
- the rolls may be aligned on the grinding machine in the manner described in application Ser. No. 10,135 filed Feb. l0,
- the movement of the probe relative to the workpiece may be effected manually but preferably it is effected automatically by a motor 18.
- a grinding machine for matching the diameters of two workpieces comprising means for supporting each of the workpieces in turn for rotation, a grinding wheel, means for effecting relative in-feed and traverse between the workpiece and the grinding wheel, and means for measuring the position of the surface of the workpiece relative to a datum position, said measuring means comprising a probe, means mounting the probe for movement towards and away from the surface of the workpiece, said probe being movable relative to said mounting means, means for indicating the position of said probe relative to said mounting means, and means for indicating the position of the mounting means relative to the datum position, said probe being mounted on the mounting means through the intermediary of a further mounting means movable towards and away from the surface of the workpiece, and a fixed stop on the first mounting means being provided to limit movement of the further mounting means towards the workpiece surface relative to the first mounting means.
- a grinding machine for matching the diameters of two workpieces comprising means for supporting each of the workpieces in turn for rotation, a grinding wheel, means for effecting relative in-feed and traverse between the workpiece and the grinding wheel, and means for measuring the position of the surface of the workpiece relative to a datum position, said measuring means comprising a probe, means mounting the probe for movement towards and away from the surface of the workpiece, said probe being towards and away from the surface of the workpiece, said probe being movable relative to said mounting means, means for indicating the position of said probe relative to said mounting means, and means for indicating the position of the mounting means relative to the datum position, a rotary feed screw being provided for effecting movement of the first mounting means, and a rotary resolver associated with the feed screw being connected with the means for indicating the position of the first mounting means.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
An apparatus in which the diameters of two rolls are matched by grinding one roll, measuring the position of the surface of the ground roll relative to a datum position using a probe, and grinding the second roll until the surface thereof is in the same position relative to the datum position as was the surface of the first roll.
Description
United States Patent Tittle 51 Mar. 28, 197 2 541 GRINDING MACHINES 56] References Cited [72] inventor: John Noel Tittle, Knutsford, England UNITED STATES PATENTS i731 Assign Churchill amp"! 504,566 9/1893 Davidson ..s1/49 Limited. Broadheath, Altrincham, 773,983 1 H1904 Reisnerm cheshlrev Ensland 1,225,858 5/1917 Raule 22 Filed; Feb 10 1970 1,792,043 2/1931 Sousa 3,037,332 6/1962 Wratt et al. ..5 l/l65.76 [21] Appl. No.: 10,136
Primary Examiner-Lester M. Swingle 30] Foreign Application Priority Data Anomey flolman & Stem Feb. l1, 1969 Great Britain ..7,276/69 ABSTRACT An apparatus in which the diameters of two rolls are matched [52] US. Cl ..5l/49, 5l/165.75 by grinding one 1.0, measuring the position f the Surface f [5 l Int. Cl "324!) 5/04 the ground n relative to a datum position using a probe, and [58] held of Search 5- 165-751 165-76 grinding the second roll until the surface thereof is in the same position relative to the datum position as was the surface of the first roll.
2 Claims, 2 Drawing Figures Patented March 28, 1972 2 Sheets-Sheet l IAIuE/VTMQ.
I M. 717 fl. 6'
9YLQ zYWwW gW GRINDING MACHINES This invention relates to grinding machines and more particularly to the matching of the diameters of two rolls or other cylindrical workpieces ground consecutively on a grinding machine.
There is a requirement in rolling mills for pairs of rolls in the individual mill stands to have accurately matched diameters, the actual diameters being unimportant. As the rolls have to be reground at frequent intervals much time is spent measuring the rolls in order that each pair can be matched.
An object of the present invention is to provide a grinding machine in which the matching operation is simplified.
According to one aspect of the present invention, there is provided a grinding machine for matching the diameters of two workpieces, comprising means for supporting each of the workpieces in turn for rotation, a grinding wheel, means for effecting relative in-feed and traverse between the workpiece and the grinding wheel, and means for measuring the position of the surface of the workpiece relative to a datum position.
An embodiment of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic plan view of a grinding machine suitable for use in the present invention, and
FIG. 2 is a view showing part of a grinding machine according to the present invention of the type shown in FIG. 1 fitted with measuring means.
Referring to the drawings, the grinding machine for matching the diameter of a pair of rolls, comprises a bed 1, a pair of roll journal rests 2 adapted to support a roll 3 about a known axis. On the bed 1 is mounted, in known manner, a grinding wheel 4 for longitudinal and in-feed movement relative to the roll 3 in known manner on slides 4a and 4b, respectively.
A bottom in-feed slide 5 mounted on a carriage 6 on the bed 1 carries a top in-feed slide 7 upon which is mounted a support 8 carrying a gauge measuring head 9 or probe which is connected with an indicator 10 for measuring axial movement of the probe relative to the support.
A feed screw 11 rotatable through a worm l2 and worm wheel 13 is provided for moving the bottom slide 5 to cause infeed or out-feed thereof, and thus the probe 9, relative to the roll 3. A print-out l4 and a digital read-out 15 are connected with a rotary resolver 16 connected with the feed screw 11 and are set to read twice the distance between the probe 9 and the axis of rotation of the roll 3 when the indicator 10 connected with the probe measures zero. The indicator 10 is arranged to read zero when the probe 9 is fully extended relative to its support 8.
A fixed stop 17 is carried by the bottom slide 5 and serves to limit in-feed movement of the top slide 7 relative to the bottom slide 5.
In use, a first roll 3 is mounted in the roll journal rests 2 for rotation about the above-mentioned known axis. With the top slide 7 abutting the stop 17 on the bottom slide 5, the latter is advanced towards the roll 3 until the probe 9 just touches the surface of the roll 3 to be ground. in this position, the print-out l5 and the read-out 14 indicate the diameter of the unground roll 3. The bottom slide 5 is then advanced further so that the probe 9 is depressed and the indicator 10 measures the distance by which it is depressed. The advance or in-feed of the bottom slide 5 is continued until the indicator 10 reads a distance equivalent to the amount of metal to be removed from the roll 3, said amount being predetermined for the condition of the pair of rolls being matched. In this position, the read-out l4 and the print-out 15 measure twice the distance between the probe and the axis of rotation of the roll when the grinding operation on that roll is complete i.e., the diameter of the roll after grinding.
The grinding operation is then commenced and is continued until the indicator 10 reads zero again i.e., until the actual diameter of the roll 3 equals the value given by the print-out l5 and read-out 14. One or more finishing passes of the grindin wheel 4 may be required subsequent] hen, wIthout moving the bottom sli e 5, the top slide 7 is moved away from the fixed stop 17 to enable the ground first roll to be replaced by a second roll whose diameter is to be matched to that of the first roll. The second roll is mounted accurately for rotation about the same known axis as the first roll. The top slide 7 is then moved against the fixed stop 17 thus causing the probe 9 to contact the surface of the second roll and to be depressed relative to the support 8. The distance of depression is shown on the indicator l0 and is a measure of the amount of metal to be removed from the second roll to reduce it to the same diameter as the ground first roll.
The grinding operation is commenced and continued until the indicator 10 reads zero. Thus, the diameters of the two rolls are accurately matched.
It will be manifest that the top slide 7 is not an essential part of a grinding machine according to the present invention, since the bottom slide 5 could carry the probe support 8 directly and could be retracted to allow the second roll to be loaded into the machine and then advanced until the read-out 14 and print-out 15 showed the same value as that before retraction.
Absolute measurements can be taken by fixing a linear measuring device (not shown) to the bottom slide 5 and having the datum for this measuring device fixed relative to the center of rotation of the workpiece.
By using output signals given by the measuring head at discrete points the amount of metal removed and the grinding process can be automatically controlled.
The rolls may be aligned on the grinding machine in the manner described in application Ser. No. 10,135 filed Feb. l0,
The movement of the probe relative to the workpiece may be effected manually but preferably it is effected automatically by a motor 18.
.I claim:
1. A grinding machine for matching the diameters of two workpieces, comprising means for supporting each of the workpieces in turn for rotation, a grinding wheel, means for effecting relative in-feed and traverse between the workpiece and the grinding wheel, and means for measuring the position of the surface of the workpiece relative to a datum position, said measuring means comprising a probe, means mounting the probe for movement towards and away from the surface of the workpiece, said probe being movable relative to said mounting means, means for indicating the position of said probe relative to said mounting means, and means for indicating the position of the mounting means relative to the datum position, said probe being mounted on the mounting means through the intermediary of a further mounting means movable towards and away from the surface of the workpiece, and a fixed stop on the first mounting means being provided to limit movement of the further mounting means towards the workpiece surface relative to the first mounting means.
2. A grinding machine for matching the diameters of two workpieces, comprising means for supporting each of the workpieces in turn for rotation, a grinding wheel, means for effecting relative in-feed and traverse between the workpiece and the grinding wheel, and means for measuring the position of the surface of the workpiece relative to a datum position, said measuring means comprising a probe, means mounting the probe for movement towards and away from the surface of the workpiece, said probe being towards and away from the surface of the workpiece, said probe being movable relative to said mounting means, means for indicating the position of said probe relative to said mounting means, and means for indicating the position of the mounting means relative to the datum position, a rotary feed screw being provided for effecting movement of the first mounting means, and a rotary resolver associated with the feed screw being connected with the means for indicating the position of the first mounting means.
Claims (2)
1. A grinding machine for matching the diameters of two workpieces, comprising means for supporting each of the workpieces in turn for rotation, a grinding wheel, means for effecting relative in-feed and traverse between the workpiece and the grinding wheel, and means for measuring the position of the surface of the workpiece relative to a datum position, said measuring means comprising a probe, means mounting the probe for movement towards and away from the surface of the workpiece, said probe being movable relative to said mounting means, means for indicating the position of said probe relative to said mounting means, and means for indicating the position of the mounting means relative to the datum position, said probe being mounted on the mounting means through the intermediary of a further mounting means movable towards and away from the surface of the workpiece, and a fixed stop on the first mounting means being provided to limit movement of the further mounting means towards the workpiece surface relative to the first mounting means.
2. A grinding Machine for matching the diameters of two workpieces, comprising means for supporting each of the workpieces in turn for rotation, a grinding wheel, means for effecting relative in-feed and traverse between the workpiece and the grinding wheel, and means for measuring the position of the surface of the workpiece relative to a datum position, said measuring means comprising a probe, means mounting the probe for movement towards and away from the surface of the workpiece, said probe being towards and away from the surface of the workpiece, said probe being movable relative to said mounting means, means for indicating the position of said probe relative to said mounting means, and means for indicating the position of the mounting means relative to the datum position, a rotary feed screw being provided for effecting movement of the first mounting means, and a rotary resolver associated with the feed screw being connected with the means for indicating the position of the first mounting means.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB727669 | 1969-02-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3651605A true US3651605A (en) | 1972-03-28 |
Family
ID=9830001
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10136A Expired - Lifetime US3651605A (en) | 1969-02-11 | 1970-02-10 | Grinding machines |
US00187028A Expired - Lifetime US3751860A (en) | 1969-02-11 | 1971-10-06 | Method of grinding rolls |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00187028A Expired - Lifetime US3751860A (en) | 1969-02-11 | 1971-10-06 | Method of grinding rolls |
Country Status (3)
Country | Link |
---|---|
US (2) | US3651605A (en) |
DE (1) | DE2007383C3 (en) |
GB (1) | GB1295282A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5138799A (en) * | 1991-04-12 | 1992-08-18 | Bryant Grinder Corporation | Probe positioning mechanism for a radius dresser |
US5800247A (en) * | 1996-04-19 | 1998-09-01 | Centerline Engineering, Inc. | Non-contact gaging apparatus and method |
US20180311785A1 (en) * | 2015-10-21 | 2018-11-01 | Singapore Technologies Aerospace Ltd | A grinding module, a grinding machine and a method for grinding |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5303512A (en) * | 1991-06-25 | 1994-04-19 | Toyoda Koki Kabushiki Kaisha | Method and apparatus for grinding a cylindrical surface of a workpiece by traverse grinding |
EP2237924A1 (en) * | 2007-12-18 | 2010-10-13 | Alcoa Inc. | Apparatus and method for grinding work rollers |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US504566A (en) * | 1893-09-05 | Machine for truing rolls | ||
US773983A (en) * | 1902-12-01 | 1904-11-01 | W H Reisner Mfg Company | Indicating surface-gage. |
US1225858A (en) * | 1915-07-20 | 1917-05-15 | Clifford T Raule | Automatic sizing device. |
US1792043A (en) * | 1928-10-03 | 1931-02-10 | Scusa Lino | Indicator gauge |
US3037332A (en) * | 1960-02-08 | 1962-06-05 | Cincinnati Milling Machine Co | Machine tool sizing device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3157971A (en) | 1963-02-07 | 1964-11-24 | Landis Tool Co | Size control device adaptable to different diameters |
US3391497A (en) * | 1964-11-17 | 1968-07-09 | Farrel Corp | Roll grinding and gaging apparatus |
US3616578A (en) * | 1969-01-10 | 1971-11-02 | Ingersoll Milling Machine Co | Method for turning workpieces |
-
1969
- 1969-02-11 GB GB727669A patent/GB1295282A/en not_active Expired
-
1970
- 1970-02-10 US US10136A patent/US3651605A/en not_active Expired - Lifetime
- 1970-02-11 DE DE2007383A patent/DE2007383C3/en not_active Expired
-
1971
- 1971-10-06 US US00187028A patent/US3751860A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US504566A (en) * | 1893-09-05 | Machine for truing rolls | ||
US773983A (en) * | 1902-12-01 | 1904-11-01 | W H Reisner Mfg Company | Indicating surface-gage. |
US1225858A (en) * | 1915-07-20 | 1917-05-15 | Clifford T Raule | Automatic sizing device. |
US1792043A (en) * | 1928-10-03 | 1931-02-10 | Scusa Lino | Indicator gauge |
US3037332A (en) * | 1960-02-08 | 1962-06-05 | Cincinnati Milling Machine Co | Machine tool sizing device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5138799A (en) * | 1991-04-12 | 1992-08-18 | Bryant Grinder Corporation | Probe positioning mechanism for a radius dresser |
US5800247A (en) * | 1996-04-19 | 1998-09-01 | Centerline Engineering, Inc. | Non-contact gaging apparatus and method |
US20180311785A1 (en) * | 2015-10-21 | 2018-11-01 | Singapore Technologies Aerospace Ltd | A grinding module, a grinding machine and a method for grinding |
US11491606B2 (en) * | 2015-10-21 | 2022-11-08 | ST Engineering Aerospace Ltd. | Grinding module, a grinding machine and a method for grinding |
Also Published As
Publication number | Publication date |
---|---|
DE2007383A1 (en) | 1971-01-07 |
DE2007383B2 (en) | 1974-12-05 |
US3751860A (en) | 1973-08-14 |
DE2007383C3 (en) | 1975-07-10 |
GB1295282A (en) | 1972-11-08 |
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Legal Events
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AS | Assignment |
Owner name: B. ELLIOTT PUBLIC LIMITED COMPANY, 167 IMPERIAL DR Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:G.T.E. PARSON;R.D. AQUTTER - JOINT LIQUIDATORS;A H REALISATIONS LIMITED CIN LIQUIDATION;REEL/FRAME:004220/0389;SIGNING DATES FROM |