GB979013A - Apparatus for testing the unbalance of a rotating part of a machine - Google Patents
Apparatus for testing the unbalance of a rotating part of a machineInfo
- Publication number
- GB979013A GB979013A GB2271561A GB2271561A GB979013A GB 979013 A GB979013 A GB 979013A GB 2271561 A GB2271561 A GB 2271561A GB 2271561 A GB2271561 A GB 2271561A GB 979013 A GB979013 A GB 979013A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lead
- leads
- pulses
- counter
- voltages
- 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
- 239000013598 vector Substances 0.000 abstract 8
- 239000002184 metal Substances 0.000 abstract 4
- 229910052751 metal Inorganic materials 0.000 abstract 4
- -1 V 1 x is negative Substances 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000011664 signaling Effects 0.000 abstract 1
- 230000007306 turnover Effects 0.000 abstract 1
Classifications
-
- 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
- G01M1/24—Performing balancing on elastic shafts, e.g. for crankshafts
-
- 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)
- Testing Of Balance (AREA)
Abstract
979, 013. Electric selective signalling systems. SOC. NOUVELLE D'ELECTRONIQUE ET DE LA RADIO-INDUSTRIE. June 22, 1961 [June 22,1960], No. 22715/61. Heading G4H. The unbalance of a rotating member, e.g. the crankshaft 1, Fig. 1, of an internal combustion engine, is sensed by two pick-up leads 8, 9 in which are induced alternating voltages whose amplitude and phase represent in polar co-ordinates the respective unbalance vectors V 1 <SP>1</SP>, V 2 <SP>1</SP> in the sensing planes. The system described converts these voltages to D.C. voltages representing the component vectors V 1 <SP>1</SP>x, V 1 <SP>1</SP>y, V 2 <SP>1</SP>x, V 2 <SP>1</SP>y in Cartesian co-ordinate, digitizes these D.C. voltages and calculates the component correction vectors V 1 x, V 1 y, V 2 X V 2 y which represent the amount of metal which must be removed on the x and y axes of the correction planes 4, 5 to balance the crankshaft. If a correction vector e.g. for plane 4, is found to be negative, metal is removed from planes 5, 6, this operation having the same effect as adding metal in plane 4. Metal is removed in planes 4, 5, 6 by a pair of machinery heads arranged on the x and y axes defined by the angular positions of the crankshaft at which the angular displacements 0 degrees and 90 degrees of a reference voltage occur, this voltage being produced by alternator 120 or a photo-electric generator. The component correction vectors are given by: - Operation: Heads 8, 9 each supply a pair of amplifiers 113,114, Fig. 2, the amplifiers having gains of (e + d)/2d and (e - d)/2d so that their outputs on leads 15a, 15b and 16a, 16b represent V 1 <SP>1</SP> and V 2 <SP>1</SP> multiplied by these factors. Reference voltages with phases 0 degrees and 90 degrees derived from alternator 120 are utilized in units 230, 260 to produce clock pulses on leads 21-1 to 21-4, 22A,22B,25,27,28a,28b as shown in Fig. 3. Pulses on lead 25 mark the instants at which the 0 degrees reference voltage passes through zero in cycle A (lead 22A energized), and leads 21-1 to 21-4 are energized in turn over successive cycles of this reference voltage. Gates 311-314, Fig. 7, each produce an output pulse at times corresponding to angular positions 0, # during successive revolutions of the crankshaft. Gates 315-318 are only opened by the outputs of gates 311-314 if the respective sinusoidally varying input on leads 15a, 15b, 16a, 16b, is positive, and the voltages thus sampled, representing the right hand sides of equations (3), (4), are supplied in succession to an analogue store 319. The stored samples are fed in turn to a digitizer 331 (block 330) which produces a train of pulses representing in number the analogue input. Unit 210 produces a train of pulses on lead 26 which alternately mark the positive half cycles of the two sensed voltages on leads 15a, 16a. The pulses on leads 28a, 28b respectively mark the instants at which the positive and negative half-cycles of the 0 degrees reference voltage commence, and thus the signs of vectors V<SP>1</SP> 1 y and V 2 <SP>1</SP>y are determined by gates 333, 334 which control gates 338, 339 so that the output of converter 331 is supplied to the add or subtract lead of counter 340. When the first two pulse trains have entered counter 340 (R.H.S. of equation (3)), pulse generator 343 is started and feeds pulses on lead 38 to return counter 340 to zero. The sign of the contents of counter 340 appears as a marking on lead 39a or 39b and determines which of gates 338, 339 is opened during the resetting period. When the counter again reaches zero, matrix 334 delivers a pulse to stop generator 343. The pulses on lead 38 are applied to an appropriate counter for V 1 y in a store 460 through a gating circuit 410 which is controlled by the sign bit on leads 39a, 39b and the clock pulses on leads 21-1 to 21-4 and 22A, 22B. The next two numbers (R.H.S. of equation (4)) are then entered in counter 340 and the sum is transferred to the appropriate counter for V 2 y in store 460. The process is repeated with lead 22B energized and a differently phased set of clock pulses (right hand side of Fig. 3) in order to determine the components V 1 x and V 2 x. If a component of a correction vector e.g. V 1 x is negative, lead 39b is energized when the transfer to store 460 takes place and the pulses on lead 38 are gated in circuit 410 to the store counters for V 2 x and V 0 x (V 0 x being the x component of a correction vector in plane 6). The stored components may be used to control the necessary machining operations either directly or after transferring the data to a punched card or tape.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR830735A FR1383712A (en) | 1960-06-22 | 1960-06-22 | Improvements to balancing machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB979013A true GB979013A (en) | 1965-01-01 |
Family
ID=8733937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2271561A Expired GB979013A (en) | 1960-06-22 | 1961-06-22 | Apparatus for testing the unbalance of a rotating part of a machine |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1298735B (en) |
FR (1) | FR1383712A (en) |
GB (1) | GB979013A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2309853A1 (en) * | 1975-04-30 | 1976-11-26 | Hofmann Maschf Geb | ELECTRONIC ASSEMBLY FOR BALANCING MACHINES |
US4015480A (en) * | 1974-12-14 | 1977-04-05 | Carl Schenck Ag | Balancing method and apparatus |
US4104919A (en) * | 1975-07-21 | 1978-08-08 | Gebr. Hofmann Kg, Maschinenfabrik | Balancing machine circuit for eliminating unbalances |
US4109312A (en) * | 1974-02-07 | 1978-08-22 | Firma Carl Schenk Ag | Method and apparatus for measuring and indicating the unbalance of a rotor |
CN110873811A (en) * | 2018-08-29 | 2020-03-10 | 斯凯孚公司 | Processor-implemented system and method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4000875A1 (en) * | 1990-01-13 | 1991-07-18 | Teldix Gmbh | Automatic balancing arrangement esp. for rotating bodies in spacecraft - has radially and tangentially displaceable weights with linear drives for balancing during operation |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2731834A (en) * | 1956-01-24 | Adjust f | ||
DE955830C (en) * | 1952-04-27 | 1957-01-10 | Schenck Gmbh Carl | Installation on balancing machines |
US2730899A (en) * | 1952-08-19 | 1956-01-17 | Gen Electric | Dynamic balancing apparatus |
DE962474C (en) * | 1955-04-26 | 1957-04-25 | Losenhausenwerk Duesseldorfer | Balancing machine with electromechanical force gauges |
FR1207643A (en) * | 1957-07-15 | 1960-02-17 | Schenck Gmbh Carl | Dynamic balancing machine |
FR1226922A (en) * | 1958-06-10 | 1960-08-18 | Schenck Gmbh Carl | Method and device for dynamically determining the imbalance of rotating parts |
-
1960
- 1960-06-22 FR FR830735A patent/FR1383712A/en not_active Expired
-
1961
- 1961-06-22 GB GB2271561A patent/GB979013A/en not_active Expired
- 1961-06-22 DE DE1961S0074462 patent/DE1298735B/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4109312A (en) * | 1974-02-07 | 1978-08-22 | Firma Carl Schenk Ag | Method and apparatus for measuring and indicating the unbalance of a rotor |
US4015480A (en) * | 1974-12-14 | 1977-04-05 | Carl Schenck Ag | Balancing method and apparatus |
FR2309853A1 (en) * | 1975-04-30 | 1976-11-26 | Hofmann Maschf Geb | ELECTRONIC ASSEMBLY FOR BALANCING MACHINES |
US4002076A (en) * | 1975-04-30 | 1977-01-11 | Gebr. Hofmann Kg | Method and circuit for use in determining unbalance of a rotary body |
US4104919A (en) * | 1975-07-21 | 1978-08-08 | Gebr. Hofmann Kg, Maschinenfabrik | Balancing machine circuit for eliminating unbalances |
CN110873811A (en) * | 2018-08-29 | 2020-03-10 | 斯凯孚公司 | Processor-implemented system and method |
Also Published As
Publication number | Publication date |
---|---|
DE1298735B (en) | 1969-07-03 |
FR1383712A (en) | 1965-01-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1464740A (en) | Method and apparatus for detecting the initial value of the rotor angle of a rotary field machine | |
GB1456987A (en) | Monitoring process for combustion engines | |
GB979013A (en) | Apparatus for testing the unbalance of a rotating part of a machine | |
GB994489A (en) | Coordinate conversion system | |
GB938957A (en) | An attitude computer | |
US3272975A (en) | Automatic machine-tool control system for truing mechanical parts | |
US3143646A (en) | Simultaneous equation solver | |
SU690341A1 (en) | Device for measuring shaft power and acceleration | |
US3889254A (en) | Measuring apparatus | |
SU726534A1 (en) | Coordinate transformation device | |
SU809070A1 (en) | Device for measuring frequency response | |
SU930479A1 (en) | Synchronous machine protection device | |
SU408354A1 (en) | DEVICE FOR DETERMINATION OF CHANGE CODE CORNER CONVERTER - CODE | |
SU1332315A2 (en) | Device for computing functions | |
SU824064A1 (en) | Device for measuring complex resistance comronentes | |
JPS5935054B2 (en) | Rectangular coordinates ↓-polar coordinates/conversion device | |
SU1084631A1 (en) | Device for measuring engine power | |
Rubinoff | Digital computers for real-time simulation | |
SU1596323A1 (en) | Device for computing logarithmic function | |
RU1816684C (en) | Robot drive control device | |
PL157094B1 (en) | Control and reference signals simulator | |
SU1015377A1 (en) | Device for computing root | |
SU930137A1 (en) | Null-organ | |
SU1525494A1 (en) | Device for measuring torque | |
Stassen | The polarity coincidence correlation technique-A useful tool in the analysis of human-operator dynamics |