US3603038A - Internal grinder for steel ingot mould - Google Patents

Internal grinder for steel ingot mould Download PDF

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Publication number
US3603038A
US3603038A US3649A US3603038DA US3603038A US 3603038 A US3603038 A US 3603038A US 3649 A US3649 A US 3649A US 3603038D A US3603038D A US 3603038DA US 3603038 A US3603038 A US 3603038A
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US
United States
Prior art keywords
arm
carriage
work head
mould
steel ingot
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
Application number
US3649A
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English (en)
Inventor
Yoshikane Manabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FUJIKI KOUSAN KK
Original Assignee
Fujiki Kosan
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Filing date
Publication date
Application filed by Fujiki Kosan filed Critical Fujiki Kosan
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    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/07—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a stationary work-table
    • B24B7/075—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a stationary work-table using a reciprocating grinding head mounted on a movable carriage
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
    • B24B27/04—Grinding machines or devices in which the grinding tool is supported on a swinging arm

Definitions

  • This invention relates to an internal grinder for a steel ingot mould.
  • the inside of the mould has been ground by moving a wagon-shaped handoperated grinder, a portable grinder, or the like, in the right and left directions while moving it back and forth.
  • the mould surface after being ground, may still retain lateral injuries which give the same lateral injuries to steel ingots in the mould. Such lateral injuries remain as fatal injuries to the products produced by the rolling mills from such ingots.
  • the conventional grinders have had many defects in that their operational efficiency is extremely bad, that small moulds and special moulds are not ground effectively, and that smooth surfaces can rarely be obtained.
  • An objective of the present invention is to provide an internal grinder for a steel ingot mould free from the conventional defects as mentioned above, wherein lateral injuries are not formed by grinding, the grinding can correspond to any shape of the inner surfaces of the mould to be ground and to any uneven inner surface thereof, caused by dissimilarity of degrees of melting and the difficulty of an alignment operation caused the the heavy weight of the mould, is eliminated.
  • a grinding wheel is turnable mounted at one side of the tip of an elongated arm.
  • the arm is supported, by a cylindrical bearing, to rotate about an axis of the arm together with drive means for the grinding wheel.
  • the bearing is received upon a work head which moves partially in the vertical direction along a plane passing through the axis of the arm.
  • the work head comprises means to reciprocate the work head automatically on a carriage for a predetermined length along the lengthwise direction of the carriage.
  • At the lower foreportion of the bearing there is provided an adjusting means to determine the angle of elevation of the arm.
  • the adjusting means has a wheel at the lower end thereof to run upon a copying surface plate which is pivoted at the fore end thereof to a carriage and movable partially about a pivot along a vertical plane including the axis of the arm. Therefore, the work head is reciprocated above the carriage and the arm having the grinding wheel at the tip thereof is reciprocated along the copying surface plate.
  • the carriage is moved above a truck in the horizontal direction within restricted angles.
  • the truck is also movable on rails.
  • FIG. 1 is a partially exposed side view of an internal grinder for a steel ingot mould
  • FIG. 2 is a partially exposed plan view of the same
  • FIG. 3 is a plan view of the same, showing the state to grind the half-right of the inside of the mould;
  • FIG. 4 is a plan view of the same, showing the state to grind the half-left of the inside of the mould;
  • FIG. 5 is a partially sectioned side view taken along the lengthwise direction of a cotter
  • FIG. 6 is a plan view of main parts of a carriage and a truck, wherein a work head is removed for clarification;
  • FIG. 7 is a partially sectioned view of a device for adjusting the angle of elevation of an arm and depth of cut of grinding.
  • a grinding wheel 1 is turnably mounted about a wheel spindle 2 provided at the tip of an elongated hollow arm 4 which is elliptic in cross section.
  • the grinding wheel 1 is connected with an output shaft of a motor 7, fixed to a motor base 6 near the rear end of the elongated arm 4, through a known V-belt device 3 passing through the inner space of the arm 4.
  • the arm 4 is rotatably supported by a cylindrical bearing 5, the lower portion of the bearing being rotatably pivoted to a work head 11.
  • a spur gear 10 is fixed to the arm 4 and is engaged with a spur gear 10a.
  • a shaft to which the spur gear is fixed has a worm wheel 9a meshed with a worm 9 of a shaft 25 secured by the work head, so that the arm 4, as well as the grinding wheel 1, is rotated and directed to both directions, as shown in FIGS. 3 and 4, by rotating a handle 8 at one end of the shaft 25 of the worm 9 to the right and left directions.
  • FIG. 5 shows this mechanism in detail.
  • the work head 11 has front and rear wheels 12 and 12a which guide it along rails above a carriage 21.
  • the mounting of the wheels and their axles to the work head permits vertical movement of the work head relative to the wheels and rails.
  • a shaft of the rear wheels is operatively connected to an output shaft of a speed change motor 18,-fixed to the work head 11 and having a magnetic brake 19, by means of a roller chain 20.
  • a worm 14 is provided on a shaft of a handle 13 positioned at one side of the foreportion of the bearing 5 above the work head 11 as shown in FIGS. 1 and 7.
  • An upper cap member 16 screwed with a vertical uphold screw 15, which is the shaft of a worm wheel 14a meshing with the worm 14, receives the lower portion of the bearing 5.
  • the lower end of the uphold screw 15 is provided with a lower cap member 17 having a roller 17a which is in contact with the upper surface of a copying surface plate 27.
  • Rotation of worm 14 moves the upper cap member 16 toward, or away from, the lower cap member, depending upon its direction of rotation.
  • the angle of elevation of the elongated arm 4 is adjustable about a pivot connecting the bearing 5 with the work head 11 by means of rotation of the handle 13, which may be rotated in both directions.
  • the fore end portion of the copying surface plate 27 is pivoted to the carriage 21 by a horizontal pin 28, while the rear end portion thereof is received by a wedgeshaped cotter 31 (cam) shown in FIG. 5.
  • the cotter 31 is connected to a spindle 30 by screw threads thereof.
  • the spindle 30 is mounted to the carriage 21, so that, by rotating a handle 29 provided at one end of the spindle, the cotter is moved to right and left along the transverse direction of the carriage.
  • the angle of the copying surface plate 27 about the horizontal pin 28 is adjustable. With the result that the angle of elevation of the arm 4 running above the copying surface plate 27 is also adjusted by determining the inclination or shape of the copying surface plate.
  • the carriage 21 is pivoted to a truck 32 at substantially the center portion thereof by means of a vertical pin 22 as shown in FIG. 6.
  • a spindle 45 having a screw thread is pivoted to the carriage 21 at one end thereof by a pin 26 and is also fixed to the truck 32 at the other end portion thereof.
  • the screw thread of the spindle 45 meshes with a bevel gear 24a which in turn meshes with another bevel gear 24.
  • a handle 23 is provided to one end of a shaft of the bevel gear 24, so that, by rotating the handle 23 in either direction, the carriage 21 is moved about the vertical pin 22 in either direction within the predetermined horizontal angles, as shown in FIG. 3 and FIG. 4.
  • the carriage has the rails on which the wheels of the work head are moved.
  • the truck 32 has four wheels 33 and 33a moved along two rails 38.
  • a spur gear 37a fixed to one of the wheel axles meshes with another spur gear 37 which is rotatable by a handle 35.
  • the truck is therefore moved right and left along the rails 38.
  • a steel ingot mould 41 whose interior is to be ground, is placed upon a sup port provided in front of the present apparatus.
  • the mould 41 is greatly deformed at the lower inside thereof, while the upper inside is not so deformed.
  • the angle of elevation of the copying surface plate 27 as well as the devices thereon are adjusted by rotation of the handle 29.
  • the handle 8 is rotated to direct the grinding wheel to the right side, as shown in FIG.
  • the handle 23 is rotated to rotate the carriage 21 as well as the devices thereon about the pin 22 along the horizontal plane so that the grinding wheel 1 may be parallel to the inner right wall of the mould.
  • the length along which the grinding wheel 1 is moved back and forth is determined by the length of the mould, and the position of the dogs 40 and 40a is determined by that length.
  • the motors 7 and 18 are driven to rotate the grinding wheel 1 and to move it back and forth, respectively. While the motors 7 and 18 are in motion, the handle 13 and, if desired, the handle 29, are rotated to adjust the depth of cut of the grinding wheel 1 and the degree of parallelness between the grinding wheel and the inner wall of the mould in accordance with the degree of deformation of the mould.
  • the grinding wheel 1 is moved from the right side to the left side by rotating the handle 35.
  • the forward and rearward speed of the grinding wheel is more than 15 m./min. and the lateral movement of the grinding wheel is from to 30 mm. for each reciprocal movement of the grinding wheel.
  • the internal grinder for ingot mould is so constructed that many advantages will be effected, as follows:
  • the adjustment to adapt the grinding wheel correctly to the inclination of the right and left inner sides of the mould and to determine the depth of cut of the mould is performed while the grinding is in operation.
  • This type of adjustment is possible because the grinding wheel is turnably mounted on one side of the tip of the elongated arm, which is received upon the work head, so as to be rotated about the axis thereof together with the drive means for the grinding wheel and to be elevated along a vertical plane including the axis of the arm.
  • the work head includes means to reciprocate the work head automatically along the lengthwise direction of the carriage for a predetermined length, the straight reciprocal motion of the grinding wheel is automatically performed inside of the mould along the lengthwise direction thereof, eliminating any lateral injury to the mould.
  • the products produced by pouring melted iron into the mould and then processed through rolling mills are much improved in quantity.
  • the arm as well as the grinding wheel is guided and reciprocated along the inclination of the copying surface plate. Therefore, when a large mould, for example, a mould weighing 30 tons, is to be ground, the mould is stationary placed upon a support and then the angle of elevation of the copying surface plate is determined, for example, to correspond to the inclination of the inner wall of the mould so that the arm as well as the grinding wheel may be reciprocated along the inclination of the inner wall of the mould, thereby providing a positive and automatic grinding and alignment operation for moulds of different shapes and internal dimensions.
  • the grinding operation is performed at a high efficiency.
  • the angle of elevation of the arm is adjusted, firstly by the angle of the copying surface plate and secondly by rotation of the handle 13, the desirable and delicate adjustment of grinding is performed.
  • An internal grinder for steel ingot moulds comprising a grinding wheel device turnably mounted at the tip of an elongated arm, drive means for said grinding wheel device, a work head rotatably supporting said arm, means to rotate said arm about an axis of the arm, means provided below said arm to adjust the angle of elevation of the arm, a copying surface plate receiving an end of said adjusting means to adjust an angle of elevation of the arm, a carriage, said plate being pivoted at one end thereof to said carriage so as to be elevated within restricted angles, said carriage receiving the work head, means to reciprocate said work head in the lengthwise direction of said arm, and a movable truck with said carriage mounted thereon so as to rotate said carriage within restricted hon'zontal angles.
  • An internal grinder for steel ingot moulds as claimed in claim 1, wherein said means to adjust an angle of elevation of the arm comprises a wheel to run along the shape and inclination of the copying surface plate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
US3649A 1970-01-19 1970-01-19 Internal grinder for steel ingot mould Expired - Lifetime US3603038A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US364970A 1970-01-19 1970-01-19
GB311370 1970-01-22

Publications (1)

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US3603038A true US3603038A (en) 1971-09-07

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GB (1) GB1233345A (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822509A (en) * 1971-07-08 1974-07-09 E Evertz Long-arm grinding machine
EP0003197A1 (fr) * 1978-01-09 1979-07-25 Societe Europeenne Des Produits Refractaires Machine pour le meulage de produits de dureté élevée
CN114378696A (zh) * 2021-12-23 2022-04-22 通裕重工股份有限公司 一种立式钢锭模打磨机械手

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3337487A1 (de) * 1983-10-13 1985-04-25 Deutsche Telephonwerke Und Kabelindustrie Ag, 1000 Berlin Vorrichtung zum einschleifen von schraegschliffen
CN112692702B (zh) * 2021-01-08 2022-06-03 广宁县灿虹五金科技有限公司 一种用于圆形钢锭的打磨装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1462420A (en) * 1919-06-27 1923-07-17 Treadwell Engineering Company Grinding machine
US2750714A (en) * 1950-12-04 1956-06-19 Mid West Abrasive Co Swing grinder
US3245176A (en) * 1963-06-27 1966-04-12 Mid West Abrasive Co Grinding machine
US3335525A (en) * 1963-06-27 1967-08-15 Mid West Abrasive Co Hydraulic system for grinding machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1462420A (en) * 1919-06-27 1923-07-17 Treadwell Engineering Company Grinding machine
US2750714A (en) * 1950-12-04 1956-06-19 Mid West Abrasive Co Swing grinder
US3245176A (en) * 1963-06-27 1966-04-12 Mid West Abrasive Co Grinding machine
US3335525A (en) * 1963-06-27 1967-08-15 Mid West Abrasive Co Hydraulic system for grinding machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822509A (en) * 1971-07-08 1974-07-09 E Evertz Long-arm grinding machine
EP0003197A1 (fr) * 1978-01-09 1979-07-25 Societe Europeenne Des Produits Refractaires Machine pour le meulage de produits de dureté élevée
FR2413953A1 (xx) * 1978-01-09 1979-08-03 Produits Refractaires
CN114378696A (zh) * 2021-12-23 2022-04-22 通裕重工股份有限公司 一种立式钢锭模打磨机械手

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Publication number Publication date
GB1233345A (xx) 1971-05-26

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