GB1023670A - A device for compensating unbalance in rotatable bodies - Google Patents
A device for compensating unbalance in rotatable bodiesInfo
- Publication number
- GB1023670A GB1023670A GB4607062A GB4607062A GB1023670A GB 1023670 A GB1023670 A GB 1023670A GB 4607062 A GB4607062 A GB 4607062A GB 4607062 A GB4607062 A GB 4607062A GB 1023670 A GB1023670 A GB 1023670A
- Authority
- GB
- United Kingdom
- Prior art keywords
- unbalance
- rotary
- rotor
- coils
- compensation
- 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
Links
- 238000004804 winding Methods 0.000 abstract 7
- 239000000463 material Substances 0.000 abstract 3
- 238000000227 grinding Methods 0.000 abstract 2
- 238000003754 machining Methods 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
- B24B41/042—Balancing mechanisms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/14—Determining imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
- G01M1/22—Determining imbalance by oscillating or rotating the body to be tested and converting vibrations due to imbalance into electric variables
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Testing Of Balance (AREA)
Abstract
1,023,670. Grinding; balancing by machinery. W. & T. AVERY Ltd. Dec. 6, 1962 [Dec. 14, 1961], No. 46070/62. Headings B3B, B3C, B3D and B3K. [Also in Division G1] A device for compensating unbalance in rotatable bodies in which unbalance compensation can only be carried out at specific compensation points symmetrically distributed around the body has at least two machining tools which are simultaneously drivable and are so adjustable together relative to the body, or are so adjustable relative to one another, in dependence on the observed angular position of the unbalance in relation to the compensation points, that to correctly locate the unbalance compensation on the body they in general each remove the same or a different amount of material from the body at a corresponding compensation point. A device, Fig. 1 (not shown), for correcting unbalance in an electrical rotor 8, e.g. a motor armature having windings disposed in grooves between the rotor teeth, comprises a table 4 in which the rotor 8 is supported. The table 4 is supported on the bed 1 by rollers 2, 3 so that it is rotatably adjustable about a point 11; the table carries a side 9 and the bed or index mark 10. Grinding discs 14, 15 milling cutters or similar rotary cutters are secured to the shaft of a motor 17 attached to a tool holder 18 rotatable about a bolt 19 by a handle 20. The tool holder carries a scale 22 and the bolt an index mark 21 for indicating the depth of cut. In use the table 4 is adjusted in accordance with the reading on the dial of a vector meter upon which unbalance is indicated in a dynamic balance machine, the dial having divisions corresponding to the scale 9; this adjustment determines how much material is removed from the teeth 12, 13 of the rotor, by the cutters 14, 15. The adjustment of the table 4 may be effected by the handle 2D. In an alternative mode of use, the table 4 is fixed and the bolt 19 is moved along the curve 23 having its centre at 11. In another device, Fig. 3 (not shown), material is removed from the mid-points of the teeth 12, 13 of the armature 8 by drills 33, 34 or the like, the shafts 40, 41 of which are driven by a motor. The drills are rotatably mounted in cylinders 35, 36 axially movable in a housing 42. Racks 37, 38 on the cylinders mesh with a pinion 39 connected to a disc 44 and operated manually or automatically by a lever 48. The disc 44 has a scale 45 and the housing 42 has an index 46. The housing 42, which has an index 49, is displaceable towards the work on a base 51, which has a scale 50. The body may be tested in a dynamic balancing machine, the unbalance being measured by a vector meter 60, Fig. 4 (not shown), comprising an instrument 60a, having fixed field coil 62a and rotary coil 64a and an instrument 60b having fixed field coil 62b and rotary coil 64b. During measurement the field coils are connected with a phase indicator having a rotor rotating in synchronism with the body to provide reference alternating voltages with a mutual phase relationship of 90 degrees; the rotary coils are connected with two windings of the moving coil of a transducer providing signals corresponding to the vibrations of the body due to its unbalance. The rotary coils are held, by coils 61a, 61b, in their positions indicating the components of unbalance; the body is placed in the compensation device in the same position as it was in the dynamic balance machine. The field coils are now fed with alternating voltages embodying the same phase difference as those from the phase generator; the rotary coils 64a, 64b are connected respectively with windings 66, 68 in the rotor of a rotary transformer 67, the windings being disposed at right angles to each other. The stator of the rotary transformer 67 has windings 71, 72 at right angles to each other. .Winding 71 is connected with a device 95 to indicate zero position so that when the body is set in the zero position, i.e. the unbalance is in the machining position, a motor 73 is disconnected by a switch 96. The motor shaft 74 carries the rotor 69 of the rotary transformer, a gear 75 and a coupling 77 connected through shaft 78 with means 79 for rotating the body. The gear 75 meshes with a gear 81, the ratio of the gearing being the reciprocal of the number of teeth on the body; the gear 81 operates the lever 48 to set the drills 33,34. Precise positioning of the body relation to the drills is effected by pressing a roller 86 against a part 80 mounted on the shaft 78 and having as many teeth as the body. The signal induced in the winding 72 indicates the depth to be drilled; drilling may be automatically discontinued after the required depth has been drilled.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1961SC030714 DE1236829B (en) | 1961-12-14 | 1961-12-14 | Device for unbalance compensation on rotating bodies |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1023670A true GB1023670A (en) | 1966-03-23 |
Family
ID=7431840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4607062A Expired GB1023670A (en) | 1961-12-14 | 1962-12-06 | A device for compensating unbalance in rotatable bodies |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1236829B (en) |
GB (1) | GB1023670A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4846024A (en) * | 1988-10-12 | 1989-07-11 | The Scott Fetzer Company | Three-way opener |
EP1079222A2 (en) * | 1999-08-26 | 2001-02-28 | Schenck RoTec GmbH | Procedure and device for compensating unbalance by removing material |
CN102175396A (en) * | 2010-12-31 | 2011-09-07 | 西安交通大学 | Online automatic balance executing device for high-speed electro-spindle rotor |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2548729A1 (en) * | 1975-10-31 | 1977-05-05 | Schenck Ag Carl | METHOD AND DEVICE FOR DETERMINING AND DISPLAYING THE ANGLE POSITION OF THE IMBALANCE IN BALANCING MACHINES |
DE2638876C3 (en) * | 1976-08-28 | 1982-11-11 | Gebr. Hofmann Gmbh & Co Kg Maschinenfabrik, 6100 Darmstadt | Device for balancing rotors, in particular electric motor armatures |
DE2908272C2 (en) * | 1979-03-02 | 1982-11-25 | Gebr. Hofmann Gmbh & Co Kg Maschinenfabrik, 6100 Darmstadt | Device for balancing rotors |
DE3232542A1 (en) * | 1982-09-01 | 1984-03-01 | Gebr. Hofmann Gmbh & Co Kg Maschinenfabrik, 6100 Darmstadt | Method and circuit arrangement for controlling the unbalance compensation operation on rotary bodies |
DE4229521B4 (en) * | 1992-09-07 | 2004-10-21 | Schenck Rotec Gmbh | Method for balancing a rotor |
DE102007014763A1 (en) * | 2007-03-28 | 2008-10-02 | Robert Bosch Gmbh | Rotor i.e. eddy current-reduced rotor, balancing method for electrical machine, involves forming slot with respect to position and shape of rotor such that slot compensates or partially compensates rotor unbalance |
CN110823450B (en) * | 2019-12-23 | 2021-09-21 | 东方电气集团东方汽轮机有限公司 | On-site dynamic balance angle indicating device and using method thereof |
-
1961
- 1961-12-14 DE DE1961SC030714 patent/DE1236829B/en active Pending
-
1962
- 1962-12-06 GB GB4607062A patent/GB1023670A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4846024A (en) * | 1988-10-12 | 1989-07-11 | The Scott Fetzer Company | Three-way opener |
EP1079222A2 (en) * | 1999-08-26 | 2001-02-28 | Schenck RoTec GmbH | Procedure and device for compensating unbalance by removing material |
EP1079222B1 (en) * | 1999-08-26 | 2010-05-12 | Schenck RoTec GmbH | Procedure and device for compensating unbalance by removing material |
CN102175396A (en) * | 2010-12-31 | 2011-09-07 | 西安交通大学 | Online automatic balance executing device for high-speed electro-spindle rotor |
CN102175396B (en) * | 2010-12-31 | 2012-08-15 | 西安交通大学 | Online automatic balance executing device for high-speed electro-spindle rotor |
Also Published As
Publication number | Publication date |
---|---|
DE1236829B (en) | 1967-03-16 |
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