CN100420928C - Unbalance measurement method and device for long shaft rotator - Google Patents
Unbalance measurement method and device for long shaft rotator Download PDFInfo
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- CN100420928C CN100420928C CNB2003101240199A CN200310124019A CN100420928C CN 100420928 C CN100420928 C CN 100420928C CN B2003101240199 A CNB2003101240199 A CN B2003101240199A CN 200310124019 A CN200310124019 A CN 200310124019A CN 100420928 C CN100420928 C CN 100420928C
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Abstract
The present invention provides a method and a device for measuring imbalance of a rotating body in shape of a long shaft, which can easily determine the reason of the imbalance. Regarding a transmission shaft, an initial imbalance value can be measured under the condition of application of load torque and slow revolutions (S1); imbalance correction can be performed according to the initial imbalance value (S2); then a loaded imbalance value M1 is measured under the condition of the application of the load torque and the slow revolutions (S3); an imbalance value M2 without load is measured under the condition of the slow revolutions and no application of the load torque (S4); whether an imbalance value on a sliding part is under an allowable value can be judged by referring to a preset conversion table according to the difference between M1 and M2 (S5); in addition, an imbalance value M3 of fast revolutions can be measured under the condition of the fast revolutions and no application of the load torque (S6); whether an imbalance value on a joint part is under an allowable value by referring to the preset conversion table according to the difference between M2 and M3 (S7).
Description
Technical field
The present invention relates to a kind of uneven assay method of long axis rotary, the particularly vibration that takes place according to the rotation of following long axis rotary, the assay method of mensuration amount of unbalance.
Background technology
The imbalance of transmission shaft is measured in the vehicle, carries out under the high revolution (for example 4000rpm) near actual running at high speed the time.At this moment, have at the transmission shaft central part under the situation of slide mechanism,, remove the imbalance that causes by waving of the portion of being slidingly matched and measure by applying certain load torque.In other words, measure the original amount of unbalance that bending (curve) and journal offset (axis shift) by transmission shaft cause, the original imbalance of axle is revised according to this measurement result.When checking after the correction, under high revolution same as described above, just do not apply load torque, in other words considered to carry out after the waving of the portion that is slidingly matched imbalance and measured and carry out final decision.
When the transmission shaft with slide mechanism is measured, need be under high revolution, and apply under the situation of certain load torque and carry out.Under high revolution, apply load torque, need big tension force, be used to prevent the slip of the rotating band between drive motor and the transmission shaft.Yet as shown in figure 14, in the determinator with handstand leaf spring mode vibrating frame, when utilizing vibration transducer 42 mensuration that are installed in the vibrating frame 34 to be the vibration of orthogonal direction with respect to leaf spring 36, the tension force of rotating band 38 is pushed vibration.Its result can not detect the vibration that should measure, brings bad influence to mensuration.Therefore, in order to measure applying under load torque and the high revolution, need structure as shown in figure 15.In the determinator of Figure 15, in the measurement axis 30 from vibrating frame 34, hang up rotating band 38 on the measurement axis 46 of the other setting that connects via joint 44, the tension force that has constituted rotating band 38 is to measuring the structure that does not exert an influence.
The correlation technique that the imbalance of above-mentioned transmission shaft is measured is opened flat 9-280991 communique (Japanese patent application) spy and is opened in the flat 6-43064 communique on the books with (Japanese patent application) spy.
Transmission shaft, its central part that has has slide mechanism, and its two ends that also have have universal joint (free joint) mechanism.In such transmission shaft, except the original imbalance of axle crooked by transmission shaft and that journal offset causes, also there is the imbalance that causes of waving by slide mechanism and universal joint mechanism.Therefore, do not measure, when its result surpasses the amount of unbalance that allows, be difficult to differentiate the tested imbalance of making and cause by what reason when finally having to carry out imbalance under load torque and the situation with high revolution rotation.
On the other hand, the determinator that being used for as shown in figure 15 measured under the situation that applies load torque, high revolution does not apply the determinator that load torque measures with shown in Figure 14 being used for and compares, and has large-scale, complicated structure.
Summary of the invention
The object of the invention provides a kind of uneven assay method of determining the long axis rotary of reason of unbalanced easily.In addition, another object of the present invention provides a kind of simple in structure and be applicable to the determinator of this assay method.
To achieve these goals, the uneven assay method of the long axis rotary that the present invention relates to has for long axis rotary, applies load torque and makes its slow speed rotation with regulation, measures the initial unbalance determination step of initial unbalance; According to described initial unbalance,, the imbalance correction step that the imbalance of described long axis rotary is revised; With for the revised long axis rotary of described imbalance, do not apply load torque and make its high revolution rotation with regulation, measure uneven determination step after the correction of revising the back amount of unbalance.
Long axis rotary such as transmission shaft in the vehicle, what have has slide mechanism and universal joint (free joint) mechanism.Follow the rotation of long axis rotary, waving of slide mechanism and universal joint mechanism taken place.By the amount of unbalance that waving of slide mechanism causes, when not having load torque, become big, when being arranged, load torque diminishes.On the other hand,, when revolution is high, become big, when revolution is low, diminish by the amount of unbalance that waving of universal joint mechanism causes.In above-mentioned uneven assay method, revise the back amount of unbalance owing to be for long axis rotary, measure when not applying load torque and its high revolution with regulation being rotated, comprise amount of unbalance that causes by waving of slide mechanism and amount of unbalance two aspects that cause by waving of universal joint mechanism so revise in the amount of unbalance of back.
Preferably, have described correction back amount of unbalance, compare the uneven decision method that the imbalance of described long axis rotary is judged with at least one the permissible value that waves of the direction of principal axis sliding part of described long axis rotary and free connector portions.
In addition, to achieve these goals, the uneven assay method of the long axis rotary that the present invention relates to has for long axis rotary, do not apply load torque and make its slow speed rotation, measure the initial unbalance determination step of initial unbalance, with regulation; According to described initial unbalance,, the imbalance correction step that the imbalance of described long axis rotary is revised; With for the revised long axis rotary of described imbalance, do not apply load torque and make its high revolution rotation with regulation, measure uneven determination step after the correction of revising the back amount of unbalance.This assay method for example with the long axis rotary that do not have slide mechanism as object.
In addition, to achieve these goals, the uneven assay method of the long axis rotary that the present invention relates to has for long axis rotary, apply load torque and make its slow speed rotation, measure the initial unbalance determination step of initial unbalance, with regulation; According to described initial unbalance,, the imbalance correction step that the imbalance of described long axis rotary is revised; For the revised long axis rotary of described imbalance, apply load torque and make its slow speed rotation with regulation, that measures loaded amount of unbalance has a laod unbalance determination step; For the revised long axis rotary of described imbalance, do not apply load torque and make its slow speed rotation with regulation, measure the non-loaded uneven determination step of non-loaded amount of unbalance; With according to described loaded amount of unbalance and described non-loaded amount of unbalance, derive the sliding part amount of unbalance of the sliding part amount of unbalance that causes by the waving of the direction of principal axis sliding part of described long axis rotary (ricketiness orunsteadiness) and derive step.
According to said structure, in the sliding part amount of unbalance is derived step, owing to can be determined at the amount of unbalance that causes by waving of sliding part in the imbalance of long axis rotary, so the reason during uneven the correction determines to become easy.
In said structure, preferably,, do not apply load torque and make its slow speed rotation, measure the uneven determination step of low rotation of low rotation amount of unbalance with regulation for the described long axis rotary of described sliding part amount of unbalance below ormal weight; For the described long axis rotary of described sliding part amount of unbalance below ormal weight, do not apply load torque and make its high revolution rotation with regulation, the height of measuring high rotation amount of unbalance rotates uneven determination step; With according to described low rotation amount of unbalance and described high rotation amount of unbalance, derive the free connector portions amount of unbalance derivation step of the free connector portions amount of unbalance that causes by waving of the free connector portions of described long axis rotary.
According to said structure, derive in step and the free connector portions amount of unbalance derivation step at the sliding part amount of unbalance, owing to can be respectively independently measure amount of unbalance that causes by waving of sliding part and the amount of unbalance that causes by waving of free connector portions, so the reason during uneven the correction determines to become easy.In addition, revolution is low during owing to the mensuration before uneven the correction, so can prolong the vibrating frame of determinator and the serviceable life of measurement axis.
In addition, to achieve these goals, the uneven assay method of the long axis rotary that the present invention relates to has for long axis rotary, do not apply load torque and make its slow speed rotation, measure the initial unbalance determination step of initial unbalance, with regulation; According to described initial unbalance,, the imbalance correction step that the imbalance of described long axis rotary is revised; For the revised long axis rotary of described imbalance, do not apply load torque and make its slow speed rotation with regulation, measure the uneven determination step of low rotation of low rotation amount of unbalance; For the revised long axis rotary of described imbalance, do not apply load torque and make its high revolution rotation with regulation, the height of measuring high rotation amount of unbalance rotates uneven determination step; With according to described low rotation amount of unbalance and described high rotation amount of unbalance, derive the free connector portions amount of unbalance derivation step of the free connector portions amount of unbalance that causes by waving of the free connector portions of described long axis rotary.
In said structure preferably, derive in the step at described sliding part amount of unbalance, poor according to expression described loaded amount of unbalance and described non-loaded amount of unbalance with the conversion table of the corresponding relation of described sliding part amount of unbalance, derived described sliding part amount of unbalance.
In said structure preferably, derive in the step at described free connector portions amount of unbalance, poor according to described low rotation amount of unbalance of expression and described high rotation amount of unbalance with the conversion table of the corresponding relation of described free connector portions amount of unbalance, derived described free connector portions amount of unbalance.
In addition, the uneven determinator that is fit to the long axis rotary of said determination method, has the measurement axis that is connected with long axis rotary, supported by leaf spring and the vibrating frame of the rotatable described measurement axis of clamping, with via rotating band, make the drive motor of described measurement axis rotation, be rotated according to the measurement axis that is connected with described long axis rotary, follow the vibration of the vibrating frame of its rotation generation, measure the amount of unbalance of described long axis rotary, wherein, the slow speed that the thickness of described leaf spring is chosen to be in regulation arrives in the mensuration rotating range of high revolution, can guarantee the mensuration precision of stipulating.
According to said structure, only use this determinator just can realize mensuration according to aforementioned assay method.In addition, be used for comparing at the determinator that applies load torque and measure under high revolution with existing, it is simple in structure and can miniaturization.
Description of drawings
Fig. 1 is the figure of expression transmission shaft structure.
Fig. 2 is the figure of expression transmission shaft structure.
Fig. 3 is the figure of the sliding part of expression transmission shaft.
Fig. 4 is the figure of the sliding part of expression transmission shaft.
Fig. 5 is the figure of joint (joint) portion of expression transmission shaft.
Fig. 6 is the figure of the corresponding relation of expression size of load torque and amount of unbalance.
Fig. 7 is the figure that expression has or not the corresponding relation of the material unaccounted for of load torque and the size that sliding part waves.
Fig. 8 is the figure of the corresponding relation of expression revolution and amount of unbalance.
Fig. 9 is the figure of the corresponding relation of the material unaccounted for that caused by revolution difference of expression and the connector portions size of waving.
Figure 10 is the process flow diagram of preferred implementation that is used to represent the uneven assay method of the long axis rotary that the present invention relates to.
Figure 11 is the process flow diagram of another preferred implementation that is used to represent the uneven assay method of the long axis rotary that the present invention relates to.
Figure 12 is the process flow diagram of another preferred implementation that is used to represent the uneven assay method of the long axis rotary that the present invention relates to.
Figure 13 is the process flow diagram of another preferred implementation that is used to represent the uneven assay method of the long axis rotary that the present invention relates to.
Figure 14 is the figure of determinator that expression has the vibrating frame of handstand leaf spring mode.
Figure 15 is the existing determinator measured under load torque and the high revolution applying of being used for of expression.
Embodiment
The uneven assay method and the determinator of the long axis rotary that the present invention relates to are unbalanced method and the devices that takes place when being used for measuring transmission shaft (long axis rotary) rotation that is loaded in vehicle etc.Below, at first utilize Fig. 1～Fig. 9 that the imbalance of the transmission shaft measured by the assay method that the present invention relates to and determinator is described.
Fig. 1 and Fig. 2 are the figure of expression transmission shaft structure.Transmission shaft 10 shown in Figure 1, the intermediate portion has sliding part 12, and its two end portions has connector portions (free connector portions) 14.Transmission shaft 10 shown in Figure 2 does not have sliding part, and two end portions has connector portions 14.The unbalanced principal element that takes place during transmission shaft 10 rotation is the imbalance that causes of waving by sliding part 12 and connector portions 14, in addition the original imbalance of axle that is for example caused by the bending and the journal offset of transmission shaft.Below to sliding part 12 wave and waving of connector portions 14 is described in detail.
Fig. 3 and Fig. 4 are the enlarged drawings of sliding part 12 among Fig. 1, and the state when Fig. 3 represents that sliding part 12 waves, Fig. 4 are represented the state that do not take place to wave.Sliding part 12 can not rotate with splined shaft 18 relatively by making Cylindorical rod 16, and can axially move and mesh, and allows telescopic transmission shaft.Do not make the transmission shaft rotation if do not apply load torque, shown in Fig. 3 (b), because by rotating the centrifugal force 20 that produces, splined shaft engaging piece radius vector direction deflection is just waved, shown in Fig. 3 (a), Cylindorical rod 16 deviation occurs with the axle center of splined shaft 18, and uneven quantitative change is big.On the other hand, make the transmission shaft rotation if apply load torque, shown in Fig. 4 (b), owing to be arranged on the pressure angle effect of the spline tooth of spline engagement portion, shown in Fig. 4 (a), Cylindorical rod 16 is adjusted with the axle center of splined shaft 18, and amount of unbalance diminishes.Thus,, when non-loaded, become big, diminish when load is arranged by the amount of unbalance that waving of sliding part 12 causes.
Fig. 5 is the enlarged drawing of the connector portions 14 among Fig. 1.Two axles of right-angled intersection in the leading section of the U word shape of connector portions 14, i.e. directions X axle 22 and Y axis of orientation 24, connecting into to be the center rotation with axle separately.Yet, the very little gap of radially existence of transmission shaft in this connecting portion, owing to follow the centrifugal force of transmission shaft rotation, axial deviation self can take place and wave in axle.Therefore, by the amount of unbalance that waving of connector portions causes, become big when revolution is high, revolution diminishes when low.
More than, respectively to sliding part in the transmission shaft wave and how waving of connector portions is illustrated.Consider the present invention, in addition, also be conceived to the different a plurality of transmission shafts of the degree of waving and the related of non-loaded and revolution height arranged.
Fig. 6 is the figure of corresponding relation of size and the amount of unbalance of expression load torque, is the result who respectively sliding part is waved the corresponding relation of the size of two different transmission shafts mensuration load torques of degree and amount of unbalance.As shown in Figure 6, sliding part waves big transmission shaft (waving big Yan's part: wave big transmission shaft), sliding part waves little transmission shaft (waving little parts: wave little transmission shaft), all is to reduce along with load torque increases amount of unbalance.But,, can know the difference of two transmission shafts if note this reduction.That is, in the difference of the amount of unbalance when amount of unbalance when load torque 0 and load torque T, waving little is α 1, is α 2 and wave big, α 1＜α 2.This is common tendency, and the amount of unbalance when not applying load torque when applying the load torque of regulation is poor, and the amount of unbalance when promptly having or not load torque is poor, becomes corresponding relation with the size of waving of sliding part.
Fig. 7 is the figure of corresponding relation that expression has or not the amount of unbalance difference of load torque and the size that sliding part waves, and is the figure by size that a plurality of transmission shafts are waved separately and the amount of unbalance difference that has or not load torque are measured and simulation etc. obtains.Obtain conversion table as shown in Figure 7, in the big or small indefinite transmission shaft that waves, non-loaded material unaccounted for is arranged, utilize conversion table can determine the size that the sliding part of this transmission shaft waves by mensuration.
Fig. 8 is the figure of the corresponding relation of expression revolution and amount of unbalance, is to dock head to wave two different transmission shafts of degree revolution and result of measuring of the corresponding relation of amount of unbalance separately.As shown in Figure 8, connector portions is waved big transmission shaft (waving big parts: wave big transmission shaft), connector portions is waved little transmission shaft (waving little parts: wave little transmission shaft), all is the increase amount of unbalance increase along with revolution.But,, can know the difference of two transmission shafts if note this reduction.That is, in the difference of the amount of unbalance when amount of unbalance when revolution is 2000rpm and revolution are 4000rpm, waving little parts is β 1, is β 2 and wave big parts, β 1＜β 2.This is common tendency, during slow speed and the amount of unbalance during high revolution poor, promptly the amount of unbalance that is caused by revolution difference is poor, becomes corresponding relation with the size that connector portions is waved.
Fig. 9 is the figure that the amount of unbalance difference that caused by revolution difference of expression and connector portions are waved the corresponding relation of size, is size that a plurality of transmission shafts are waved separately and by the material unaccounted for that revolution difference causes is measured and simulation etc. obtains figure.Obtain conversion table as shown in Figure 9, in the big or small indefinite transmission shaft that waves,, utilize conversion table can determine the size that the connector portions of this transmission shaft is waved by measuring the material unaccounted for that causes by revolution.
As mentioned above, according to each item relevant, can realize the uneven assay method and the determinator of the long axis rotary that the present invention relates to the imbalance of transmission shaft.Below, with reference to the accompanying drawings embodiments of the present invention are described.
Figure 10 represents the preferred implementation of the uneven assay method of the long axis rotary that the present invention relates to, and Figure 10 is the process flow diagram of overall process that is used to represent the uneven assay method of transmission shaft.Each step in the description of flow diagram in order.
Imbalance before implementing to revise in step 1 is measured.At this moment, apply the load torque of prescribed level T, transmission shaft is measured with slow speed (for example 2000rpm) rotation and the enforcement of regulation.So owing to applied waving of load torque sliding part little (transmission shaft that does not have sliding part does not have this to wave), and in addition, so because waving of the low connector portions of revolution is also little.Therefore, can know that in step 1 amount of unbalance of measuring is the imbalance except that sliding part and connector portions, for example an original imbalance that causes by the bending and the journal offset of transmission shaft.
In step 2, implement unbalanced correction.Because the amount of unbalance of measuring in step 1 is the original imbalance of axle that is caused by the bending of transmission shaft and journal offset, so that the weight that welding is used to revise on transmission shaft etc. are used for revising is uneven.
In the step 3, under the situation that does not apply load torque and rotate, implement uneven mensuration, acquisition measured value Ma (revised amount of unbalance) with the high revolution of stipulating (for example 4000rpm).For transmission shaft, owing to be to measure not applying load torque and make under its situation, wave the amount of unbalance that causes and wave amount of unbalance two aspects (transmission shaft that does not have sliding part does not comprise the amount of unbalance that is caused by waving of sliding part) that cause by connector portions so measured value Ma comprises by sliding part with the high revolution rotation of regulation.
In step 4, measured value Ma and standard value A are compared.If the permissible value that sliding part is waved is a, the permissible value that connector portions is waved is b, and the standard value with transmission shaft of sliding part and connector portions is A=a+b, has connector portions and the standard value that do not have a transmission shaft of sliding part is A=b.In step 4,, finish to measure if measured value Ma below standard value A, judges then that (being) wave below permissible value; If measured value Ma is bigger than standard value A, judge that then (deny) wave greatlyyer than permissible value, implement to decompose and investigate.
Figure 11 represents other preferred implementation of the uneven assay method of the long axis rotary that the present invention relates to, and Figure 11 is used to represent to have connector portions and does not have the process flow diagram of overall process of uneven assay method of the transmission shaft of sliding part.Each step in the description of flow diagram in order.
Imbalance before implementing to revise in step 1 is measured.At this moment, do not apply load torque, transmission shaft is measured with slow speed (for example 2000rpm) rotation and the enforcement of regulation.Owing to do not have a sliding part, thus even do not apply in the mensuration of load torque and also do not have waving of sliding part, in addition, so because waving of the low connector portions of revolution is also little.Therefore, can know that in step 1 amount of unbalance of measuring is the imbalance except that sliding part and connector portions, for example an original imbalance that causes by the bending and the journal offset of transmission shaft.
In step 2, implement unbalanced correction.Because the amount of unbalance of measuring in step 1 is the original imbalance of axle that is caused by the bending of transmission shaft and journal offset, so that the weight that welding is used to revise on transmission shaft etc. are used for revising is uneven.
In the step 3, under the situation that does not apply load torque and rotate, implement uneven mensuration, acquisition measured value Mb (revised amount of unbalance) with the high revolution of stipulating (for example 4000rpm).Because transmission shaft do not have sliding part, measured value Mb only comprises by connector portions and waves the amount of unbalance that causes.
The permissible value b that in step 4 measured value Mb and connector portions is waved compares.In step 4,, finish to measure if measured value Mb below standard value b, judges then that (being) wave below permissible value; If measured value Mb is bigger than standard value b, judge that then (deny) wave greatlyyer than permissible value, implement to decompose and investigate.
Figure 12 represents another preferred implementation of the uneven assay method of the long axis rotary that the present invention relates to, and Figure 12 is the process flow diagram of overall process of uneven assay method that is used to represent to have the transmission shaft of sliding part and connector portions.Each step in the description of flow diagram in order.
Imbalance before implementing to revise in step 1 is measured.At this moment, apply the load torque of prescribed level T, transmission shaft is measured with slow speed (for example 2000rpm) rotation and the enforcement of regulation.Because so it is little to have applied waving of load torque sliding part, in addition, so because waving of the low connector portions of revolution is also little.Therefore, can know that in step 1 amount of unbalance of measuring is the imbalance except that sliding part and connector portions, for example an original imbalance that causes by the bending and the journal offset of transmission shaft.In step 2, implement unbalanced correction.Because the amount of unbalance of measuring in step 1 is the original imbalance of axle that is caused by the bending of transmission shaft and journal offset, so that the weight that welding is used to revise on transmission shaft etc. are used for revising is uneven.
In the step 3, under load torque that applies prescribed level T and situation, implement uneven mensuration, obtain measured value M1 (loaded amount of unbalance) with the slow speed rotation of regulation.In addition, in the step 4, do not apply load torque and with the situation of aforementioned same slow speed rotation under implement uneven mensuration, obtain measured value M2 (non-loaded amount of unbalance).Comparative measurements value M1 and M2 in step 5, whether the difference of judging them is below permissible value a.The difference of measured value M1 and M2 is that non-loaded material unaccounted for is arranged, and has the corresponding relation (with reference to Fig. 7) of the size of waving with sliding part.Therefore, preestablish the permissible value a that waves the corresponding material unaccounted for that has or not load torque of big or small permissible value with sliding part, compare, can judge and whether wave below the permissible value of size at sliding part by difference and permissible value a to measured value M1 and M2.In other words, if the difference of M1 and M2 below permissible value a, judges that (being) below the permissible value that waves of sliding part, advances to step 6 then; If M1 is bigger than permissible value a with the difference of M2, judge that (denying) is bigger than the permissible value that waves of sliding part, implement to decompose investigation.
In the step 6, under the situation that does not apply load torque and rotate, implement uneven mensuration, acquisition measured value M3 (amount of unbalance of high revolution) with the high revolution of stipulating (for example 4000rpm).Comparative measurements value M2 and M3 in step 7, whether the difference of judging them is below permissible value b.The difference of measured value M2 and M3 is the material unaccounted for according to revolution difference, has the corresponding relation (with reference to Fig. 9) of the size of waving with connector portions.Therefore, preestablish the corresponding permissible value b of permissible value that waves size with connector portions, compare, can judge and whether wave below the big or small permissible value in connector portions by difference and permissible value b to measured value M2 and M3 according to the material unaccounted for of revolution difference.In other words, if the difference of M2 and M3 below permissible value b, is judged (being) below the permissible value that waves of connector portions, finish then to measure; If M2 is bigger than permissible value b with the difference of M3, judge that (denying) is bigger than the permissible value that waves of connector portions, implement to decompose investigation.
As mentioned above, owing to can measure the unbalanced main occurrence factor of transmission shaft, in decomposing investigation, determine reason easily with sliding part and connector portions.
Figure 13 represents another preferred implementation of the uneven assay method of the long axis rotary that the present invention relates to, and Figure 13 is used to represent not have sliding part and only has the process flow diagram of overall process of uneven assay method of the transmission shaft of connector portions.Each step in the description of flow diagram in order.
Imbalance before implementing to revise in step 1 is measured.Slow speed (for example 2000rpm) in regulation is implemented to measure down.So because waving of the low connector portions of revolution is little.Therefore, can know that in step 1 amount of unbalance of measuring is the imbalance except that connector portions, for example an original imbalance that causes by the bending and the journal offset of transmission shaft.In step 2, implement unbalanced correction.Because the amount of unbalance of measuring in step 1 is the original imbalance of axle that is caused by the bending of transmission shaft and journal offset, so that the weight that welding is used to revise on transmission shaft etc. are used for revising is uneven.
In the step 3, under the situation that does not apply load torque and rotate, implement uneven mensuration, acquisition measured value M2 with the slow speed of stipulating.In the step 4, under the situation that does not apply load torque and rotate, implement uneven mensuration, acquisition measured value M3 with the high revolution of stipulating (for example 4000rpm).Comparative measurements value M2 and M3 in step 5, whether the difference of judging them is below permissible value b.The difference of measured value M2 and M3 is the material unaccounted for according to revolution difference, has the corresponding relation (with reference to Fig. 9) of the size of waving with connector portions.Therefore, preestablish the corresponding permissible value b of permissible value that waves size with connector portions, compare, can judge and whether wave below the big or small permissible value in connector portions by difference and permissible value b to measured value M2 and M3 according to the material unaccounted for of revolution difference.In other words, if the difference of M2 and M3 below permissible value b, is judged (being) below the permissible value that waves of connector portions, finish to measure; If M2 is bigger than permissible value b with the difference of M3, judge that (denying) is bigger than the permissible value that waves of connector portions, implement to decompose investigation.
As mentioned above, owing to can measure the imbalance that causes by connector portions, in decomposing investigation, determine reason easily.
In addition, to uneven assay method shown in Figure 13, the imbalance before implementing to revise in step 1 is measured, and implements in the step 2 unbalanced correction, carries out imbalance for the transmission shaft of having implemented the balance correction after the step 3 and measures at Figure 10.But, to uneven assay method shown in Figure 13, also can omit step 1 and step 2 at Figure 10, the transmission shaft of not implementing the balance correction is carried out imbalance measure.In other words, also can only utilize Figure 10 uneven assay method conduct extremely shown in Figure 13 to unbalanced inspection.
As described above, can provide a kind of uneven assay method of determining the long axis rotary of reason of unbalanced easily by the present invention.
Claims (8)
1. the uneven assay method of a long axis rotary comprises:
For long axis rotary, apply load torque and make under its situation the initial unbalance determination step of mensuration initial unbalance, with the slow speed rotation of regulation;
According to described initial unbalance,, the imbalance correction step that the imbalance of described long axis rotary is revised; With
For the revised long axis rotary of described imbalance, do not apply load torque and make under its situation uneven determination step after the correction of amount of unbalance after mensuration is revised with the high revolution rotation of regulation.
2. the uneven assay method of long axis rotary according to claim 1, comprise with described revise the back amount of unbalance, with the permissible value that waves of the free connector portions of described long axis rotary or with the permissible value that waves of the direction of principal axis sliding part of described long axis rotary and free connector portions and compare, judge the whether qualified uneven decision method of imbalance of described long axis rotary.
3. the uneven assay method of a long axis rotary comprises:
For long axis rotary, do not apply load torque and make under its situation the initial unbalance determination step of mensuration initial unbalance, with the slow speed rotation of regulation;
According to described initial unbalance,, the imbalance correction step that the imbalance of described long axis rotary is revised; With
For the revised long axis rotary of described imbalance, do not apply load torque and make under its situation, revising uneven determination step after the correction that the back amount of unbalance measures with the high revolution rotation of regulation.
4. the uneven assay method of a long axis rotary comprises:
For long axis rotary, apply load torque and make under its situation the initial unbalance determination step of mensuration initial unbalance, with the slow speed rotation of regulation;
According to described initial unbalance,, the imbalance correction step that the imbalance of described long axis rotary is revised;
For the revised long axis rotary of described imbalance, apply load torque and make under its slow speed rotation situation with regulation, to what loaded amount of unbalance was measured the laod unbalance determination step arranged;
For the revised long axis rotary of described imbalance, do not apply load torque and make under its situation, the non-loaded uneven determination step that non-loaded amount of unbalance is measured with the slow speed rotation of regulation; With
According to described loaded amount of unbalance and described non-loaded amount of unbalance, derive the sliding part amount of unbalance derivation step of waving the sliding part amount of unbalance that causes by the direction of principal axis sliding part of described long axis rotary.
5. the uneven assay method of long axis rotary according to claim 4 comprises:
For the described long axis rotary of described sliding part amount of unbalance below ormal weight, do not apply load torque and make under its situation, the uneven determination step of low rotation that low rotation amount of unbalance is measured with the slow speed rotation of regulation;
For the described long axis rotary of described sliding part amount of unbalance below ormal weight, do not apply load torque and make under its situation with the high revolution rotation of regulation, the height that height rotation amount of unbalance is measured rotates uneven determination step; With
According to described low rotation amount of unbalance and described high rotation amount of unbalance, derive the free connector portions amount of unbalance of the free connector portions amount of unbalance that causes by waving of the free connector portions of described long axis rotary and derive step.
6. the uneven assay method of a long axis rotary comprises:
For long axis rotary, do not apply load torque and make under its situation the initial unbalance determination step of mensuration initial unbalance, with the slow speed rotation of regulation;
According to described initial unbalance,, the imbalance correction step that the imbalance of described long axis rotary is revised;
For the revised long axis rotary of described imbalance, do not apply load torque and make under its situation, the uneven determination step of low rotation that low rotation amount of unbalance is measured with the slow speed rotation of regulation;
For the revised long axis rotary of described imbalance, do not apply load torque and make under its situation with the high revolution rotation of regulation, the height that height rotation amount of unbalance is measured rotates uneven determination step; With
According to described low rotation amount of unbalance and described high rotation amount of unbalance, derive the free connector portions amount of unbalance of the free connector portions amount of unbalance that causes by waving of the free connector portions of described long axis rotary and derive step.
7. according to the uneven assay method of claim 4 or 5 described long axis rotary, derive in the step at described sliding part amount of unbalance, according to representing the poor of described loaded amount of unbalance and described non-loaded amount of unbalance, with the conversion table of the corresponding relation of described sliding part amount of unbalance, derive described sliding part amount of unbalance.
8. according to the uneven assay method of claim 5 or 6 described long axis rotary, derive in the step at described free connector portions amount of unbalance, according to described low rotation amount of unbalance of expression and described high the poor of amount of unbalance of rotating, with the conversion table of the corresponding relation of described free connector portions amount of unbalance, derive described free connector portions amount of unbalance.
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| CN100420928C true CN100420928C (en) | 2008-09-24 |
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| CN105279358B (en) * | 2014-07-25 | 2018-03-02 | 上海纳铁福传动系统有限公司 | The initial residual amount of unbalance target setting method of power transmission shaft |
| US10324449B2 (en) * | 2015-02-27 | 2019-06-18 | Makino Milling Machine Co., Ltd. | Motor controlling method, control device and machine tool |
| JP2019148700A (en) * | 2018-02-27 | 2019-09-05 | コニカミノルタ株式会社 | Image forming device |
| CN109556499A (en) * | 2018-11-13 | 2019-04-02 | 东莞市国森科精密工业有限公司 | A kind of rotary tooling of wave producer |
| CN112683529B (en) * | 2020-12-04 | 2023-03-31 | 东风汽车股份有限公司 | Automobile transmission shaft bending endurance test device and method thereof |
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|---|---|---|---|---|
| JPH0643064A (en) * | 1992-07-24 | 1994-02-18 | Toyota Motor Corp | Dynamic-balance correcting method for long-shaft rotary body |
| JPH06323943A (en) * | 1993-05-12 | 1994-11-25 | Akashi:Kk | Balance tester |
| JPH0815075A (en) * | 1994-07-05 | 1996-01-19 | Mitsubishi Heavy Ind Ltd | Low-and high-speed balancing machine for rotating body |
| JPH0843235A (en) * | 1994-08-02 | 1996-02-16 | Nissan Motor Co Ltd | Method for correcting balance of connecting shaft |
| JPH09280991A (en) * | 1996-04-18 | 1997-10-31 | Toyota Motor Corp | Method for evaluating dynamic unbalance |
| CN1445521A (en) * | 2001-12-24 | 2003-10-01 | 雷达特股份有限公司 | Method for measuring rotor unbalance degree |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0643064A (en) * | 1992-07-24 | 1994-02-18 | Toyota Motor Corp | Dynamic-balance correcting method for long-shaft rotary body |
| JPH06323943A (en) * | 1993-05-12 | 1994-11-25 | Akashi:Kk | Balance tester |
| JPH0815075A (en) * | 1994-07-05 | 1996-01-19 | Mitsubishi Heavy Ind Ltd | Low-and high-speed balancing machine for rotating body |
| JPH0843235A (en) * | 1994-08-02 | 1996-02-16 | Nissan Motor Co Ltd | Method for correcting balance of connecting shaft |
| JPH09280991A (en) * | 1996-04-18 | 1997-10-31 | Toyota Motor Corp | Method for evaluating dynamic unbalance |
| CN1445521A (en) * | 2001-12-24 | 2003-10-01 | 雷达特股份有限公司 | Method for measuring rotor unbalance degree |
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