CN111950109A - Pipe cutting clamp and optimization method thereof - Google Patents
Pipe cutting clamp and optimization method thereof Download PDFInfo
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Abstract
The application provides a pipe cutting clamp and an optimization method thereof, wherein the optimization method comprises the steps of establishing a dynamic model of the pipe cutting clamp; adjusting model parameters of the arc-shaped track to calculate the clamping force of the jaw model on the pipe with the same diameter based on different model parameters; and adjusting the diameter of the pipe to calculate the clamping force of the jaw model on the pipe with different diameters based on different model parameters. By the method, corresponding model parameters can be selected for design according to the clamping force required by pipes with different diameters in the actual pipe cutting process during subsequent design, and the model parameters need to be calculated once in the design process due to the change of the diameters of the pipes, so that the calculation time is saved, the design period is shortened, and the design efficiency of the pipe cutting clamp is improved.
Description
Technical Field
The application relates to the field of pipe machining, in particular to a pipe cutting clamp and an optimization method thereof.
Background
The cutting of the pipe type material requires the clamping of the pipe, and in order to avoid the error of the cutting process of the pipe moving, the fixation of the pipe without movement is a necessary reason for the existence of the clamp. Under most working conditions, the length and the diameter of the pipe are changed, the weight range is 0 to hundreds of kilograms, the clamping force of the clamp is in a large enough change range, and the pipe with the same diameter and different lengths needs to be synchronously considered, namely, the pipe with the same diameter and different lengths can have larger clamping force when the clamping radius is smaller, so that the pipe with the longer length can be fixed for processing. At present main anchor clamps design is through lever principle, enlargies the constant force of cylinder output to certain multiple, reaches the effect of increase anchor clamps clamping force, and the design of current mainstream has sharp track type and arc track type, and with regard to lever effect, the orbital effect of arc is better than the effect of linear type. However, a typical disadvantage of the arc-shaped track is that the curvature radius is constant and has no change, which results in that when the diameter of the pipe changes, the clamping force cannot be synchronously changed to adapt to the pipe with the corresponding diameter.
Disclosure of Invention
The application mainly provides a pipe cutting clamp and an optimization method thereof, which can save calculation time and shorten the design period, thereby improving the design efficiency of the pipe cutting clamp.
In order to solve the technical problem, the application adopts a technical scheme that: provided is an optimization method of a pipe cutting clamp, comprising the following steps: establishing a dynamic model of the pipe cutting clamp, wherein the dynamic model comprises a rotating plate model and a jaw model, the rotating plate model is provided with an arc-shaped rail, and the jaw model and the arc-shaped rail are matched and arranged so as to move along the guide direction of the arc-shaped rail when the rotating plate model rotates, so that a pipe is clamped; adjusting model parameters of the arc-shaped track to calculate the clamping force of the jaw model on the pipe with the same diameter based on different model parameters; and adjusting the diameter of the pipe to calculate the clamping force of the jaw model on the pipe with different diameters based on the different model parameters.
Wherein the model parameters comprise curvature radius, and the step of adjusting the model parameters of the arc-shaped track to calculate the clamping force of the jaw model to the pipe with the same diameter based on different model parameters comprises: and adjusting the curvature radius of the arc track in a linear change rate mode within a preset range to calculate a first clamping force of the jaw model on the same-diameter pipe based on different curvature radii.
Wherein, the step of adjusting the curvature radius of the arc track in a linear rate of change manner within a preset range to calculate a first clamping force of the jaw model to a pipe with the same diameter based on different curvature radii further comprises: adjusting the curvature radius of the arc track in a non-linear change rate mode within a preset range to calculate a second clamping force of the jaw model on the same diameter pipe based on different curvature radii, wherein the non-linear change rate delta r is a (F)max-Fmin)3+b(Fmax-Fmin)2+c(Fmax-Fmin)1Said FmaxAnd said FminThe maximum value and the minimum value of the first clamping force in the preset range are respectively, and a, b and c are adjustable coefficients.
Wherein, the step of adjusting the curvature radius of the arc track in a nonlinear rate of change manner within a preset range to calculate a second clamping force of the jaw model on the same diameter pipe based on different curvature radii further comprises: according toThe nonlinear change rate is used for making a change spiral line of which the curvature radius is within the preset range; calculating the sensitivity of the jaw model to the pipe with the same diameter according to the second clamping force and the change spiral line, wherein the sensitivity is
FiFor the second clamping force, A is the angle of rotation of the varying helix, PiIs the diameter of the pipe, KiIs the non-linear rate of change.
The method comprises the following steps of adjusting model parameters of the arc-shaped track to calculate clamping force of a clamping jaw model on pipes with the same diameter based on different model parameters, wherein the model parameters further comprise friction factors, and the step of adjusting the model parameters of the arc-shaped track to calculate the clamping force of the clamping jaw model on the pipes with the same diameter based on different model parameters comprises the following steps: adjusting the friction factor of the arc-shaped track to calculate a first clamping force of the jaw model to a pipe with the same diameter based on different friction factors when the pipe with the same curvature radius is in the same curvature radius; and adjusting the curvature radius of the arc track in a linear change rate mode within a preset range so as to calculate first clamping force of the jaw model on the same diameter of the pipe based on different curvature radii respectively under different friction factors.
Wherein, the step of adjusting the curvature radius of the arc track in a linear rate of change manner within a preset range to calculate the first clamping force of the jaw model to the pipe with the same diameter based on different curvature radii comprises the following steps: calculating the length of the arc-shaped track corresponding to the pipe with the same diameter according to the path length of the pipe with the same diameter clamped by the jaw model and the rotation angle of the rotating plate model; the step of adjusting the curvature radius of the arc-shaped track in a linear change rate manner within a preset range to calculate a first clamping force of the jaw model on a pipe with the same diameter based on different curvature radii comprises: and adjusting the curvature radius of the arc-shaped track in a linear change rate mode within a preset range, wherein the length of the arc-shaped track is kept unchanged, so as to calculate a first clamping force of the jaw model on the pipe with the same diameter based on different curvature radii.
Wherein, the step of adjusting the model parameters of the arc-shaped track to calculate the clamping force of the jaw model to the pipe with the same diameter based on different model parameters further comprises the following steps: and calculating the adjustment range of the curvature radius according to the maximum preset diameter and the minimum preset diameter of the pipe.
Wherein, the calculating the adjustment range of the curvature radius according to the maximum preset diameter and the minimum preset diameter of the pipe comprises: and calculating the maximum curvature radius and the minimum curvature radius according to the lengths of the arc tracks corresponding to the maximum preset diameter and the minimum preset diameter of the pipe.
Wherein, the step of adjusting the model parameters of the arc-shaped track to calculate the clamping force of the jaw model to the pipe with the same diameter based on different model parameters further comprises the following steps: and adjusting working condition parameters of a dynamic model of the pipe cutting clamp so as to calculate the clamping force of the jaw model on pipes with the same diameter based on the same model parameters under different working conditions.
In order to solve the above technical problem, another technical solution adopted by the present application is: the pipe cutting clamp comprises a rotating plate and clamping jaws, wherein the rotating plate is provided with an arc-shaped rail, the clamping jaws are respectively matched with the arc-shaped rail to move along the guide direction of the arc-shaped rail when the rotating plate rotates, so that pipes are clamped, and the rotating plate and the clamping jaws are prepared by the optimization method.
The beneficial effect of this application is: different from the situation of the prior art, the optimization method provided by the application calculates the clamping force of the jaw model on the pipe with the same diameter based on different model parameters by adjusting the model parameters of the arc-shaped track; the diameter of the pipe is adjusted to calculate the method for the clamping force of the clamping jaw model on the pipe with different diameters based on different model parameters, so that during subsequent design, the corresponding model parameters are selected to be designed according to the clamping force required by the pipe with different diameters in the actual pipe cutting process, and the model parameters need to be calculated once in the design process due to the change of the pipe diameter, so that the calculation time is saved, the design period is shortened, and the design efficiency of the pipe cutting clamp is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic flow chart diagram illustrating a first embodiment of a method for optimizing a pipe cutting fixture according to the present application;
FIG. 2 is a detailed flowchart of step S12 in FIG. 1;
FIG. 3 is a schematic diagram of a detailed flowchart of another embodiment of step S12 in FIG. 1;
FIG. 4 is a schematic diagram illustrating a detailed flow chart of step S12 in FIG. 1 in another embodiment;
FIG. 5 is a schematic flow chart diagram illustrating a second embodiment of the optimization method of the pipe cutting clamp provided in the present application;
fig. 6 is a schematic flow chart of a third embodiment of the optimization method of the pipe cutting clamp provided by the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive step are within the scope of the present application.
The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1, fig. 1 is a schematic specific flowchart of a first embodiment of an optimization method of a pipe cutting fixture provided in the present application, where the optimization method in this embodiment includes:
s11: establishing a dynamic model of the pipe cutting clamp;
wherein, the dynamics model of the pipe cutting clamp comprises a rotating plate model and a clamping jaw model, the rotating plate model is provided with two arc-shaped rails, the clamping jaw model and the arc-shaped rails are matched and arranged to be close to each other along the guide direction of the arc-shaped rails when the rotating plate model rotates so as to clamp the pipe, in one embodiment, the number of the arc-shaped rails is two, the two arc-shaped rails are arranged in central symmetry relative to the rotation center of the rotating plate model, the number of the clamping jaw models is also two, the two clamping jaw models are respectively matched and arranged with the two arc-shaped rails, based on the above description, in the actual pipe cutting process, the curvature radius of the arc-shaped rails has great influence on the clamping force generated when the clamping jaws clamp the pipe, the different curvature radii can cause different clamping directions when the clamping jaws clamp the pipe, namely, the angles of the generated, therefore, the optimization method in this embodiment mainly aims at the optimization analysis of the clamping force generated by the clamping jaws with different curvature radii of the arc-shaped track, and in the modeling process, the model parameters including the curvature radii of the arc-shaped track can be used as variable parameters, and other structural parameters which have no influence or little influence on the clamping force in the rotating plate model can be used as non-variable parameters, such as ambient temperature, humidity, material and the like.
The dynamic model can be completed by using multi-body prototype simulation software (ADAMS), and comprises a constraint model and a dynamic force driving model; the constraint model is only added with constraint, no load is added, the correctness of the model is only calculated, whether the over-constraint condition exists or not is judged, the external load is added to the dynamic force driving model, the operation working condition of the actual pipe cutting clamp is better met, and in the actual modeling process, in order to reduce the workload, structures which have no influence on optimization analysis in the solid clamp, such as chamfers, round holes with small diameters, bolt holes and the like, can be removed.
It is understood that the dynamic model of the pipe cutting jig also includes other models of the pipe cutting jig, such as a driving mechanism for driving the rotating plate model to rotate, a pipe model, and the like.
S12: adjusting model parameters of the arc-shaped track to calculate the clamping force of the jaw model on the pipe with the same diameter based on different model parameters;
specifically, the model parameters include the curvature radius, the curvature radius of the arc-shaped track is adjusted in a linear rate within a preset range, so as to calculate a first clamping force of the jaw model on the same-diameter pipe based on different curvature radii, for example, in the modeling process, the minimum value or the maximum value within the preset range is used as an initial value, then in step S12, the curvature radius of the arc-shaped track is adjusted in a gradually increasing or gradually decreasing manner with a fixed value, and the first clamping force of the jaw model on the same-diameter pipe based on each adjusted curvature radius is calculated through the dynamic model.
In the adjusting process, an arc track which is continuously adjusted can be drawn by a curve interpolation method, and commonly used interpolation types comprise polynomial interpolation, Gaussian interpolation, arc interpolation and the like; for a common face or volume, polynomial interpolation is typically used; for curved surfaces with contact relationships, gaussian interpolation is typically used; for a smooth transition to another curved surface, circular interpolation is usually used; in the present embodiment, gaussian interpolation is mainly employed.
The preset range can be set manually, or the maximum value and the minimum value of the curvature radius recorded in the history calculation record can be used as the maximum value and the minimum value in the preset range.
Optionally, the fixed value is 18-22 mm, such as 18mm, 20mm, or 22 mm.
S13: and adjusting the diameter of the pipe to calculate the clamping force of the jaw model on the pipe with different diameters based on different model parameters.
Specifically, the diameter of the pipe is adjusted, and the first clamping force of the jaw model for the pipe of each diameter based on the different radii of curvature is calculated by the method in step S12.
The diameter of the pipe is adjusted by a manual setting method, the manual setting basis can be according to the diameter of the pipe commonly used in the actual pipe cutting process, the diameter of the pipe can also be according to the diameter commonly used in the pipe, and the adjustment of the diameter of the pipe can also be according to the diameter of the pipe recorded in the historical calculation record.
Referring to fig. 2, fig. 2 is a schematic flowchart illustrating the specific process of step S12 in fig. 1, in this embodiment, the step S12 may specifically include:
s12 a: and calculating the length of the arc-shaped track corresponding to the pipe with the same diameter according to the path length of the pipe with the same diameter clamped by the jaw model and the rotation angle of the rotating plate model.
The path length is the moving distance of the jaw model in the process from the unclamped state to the clamped state.
S12 b: and adjusting the curvature radius of the arc track in a linear change rate mode within a preset range to calculate a first clamping force of the jaw model on the same-diameter pipe based on different curvature radii.
Specifically, the curvature radius of the arc-shaped track is adjusted in a linear rate of change manner within a preset range, and the length of the arc-shaped track is kept unchanged, so as to calculate the first clamping force of the jaw model on the same diameter pipe material based on different curvature radii, and the description of the curvature adjustment in the step S12b can refer to the detailed description in the step S12 in the above embodiment.
In the optimization method in the embodiment, the curvature radius of the arc-shaped track is adjusted in a linear change rate mode, the diameter of the pipe is adjusted, and the clamping force of the jaw model on the pipe with different diameters based on different curvature radii is calculated, so that the corresponding curvature radius is selected to be designed according to the clamping force required by the pipe with different diameters in the actual pipe cutting process during subsequent design, the curvature radius is not required to be calculated once in the design process due to the change of the diameter of the pipe, the calculation time is saved, the design period is shortened, and the design efficiency of the pipe cutting clamp is improved.
Referring to fig. 3, fig. 3 is a schematic flowchart illustrating another embodiment of step S12 in fig. 1, wherein step S12 may specifically include:
s121: the curvature radius of the arc track is adjusted in a linear change rate mode within a preset range, so that a first clamping force of the jaw model on a pipe with the same diameter based on different curvature radii is calculated;
step S121 is the same as step S12 in the above embodiment, and is not described herein again.
S122: adjusting the curvature radius of the arc track in a nonlinear change rate mode within a preset range to calculate a second clamping force of the jaw model on the same-diameter pipe based on different curvature radii;
specifically, in the modeling process, the minimum value or the maximum value within the preset range is used as the initial value, then the curvature radius of the arc-shaped track is gradually increased or decreased in a nonlinear manner in step S122, and the second clamping force of the jaw model on the same diameter pipe based on the curvature radius after each adjustment is calculated through the dynamic model.
Wherein the nonlinear change rate Δ r ═ a (F)max-Fmin)3+b(Fmax-Fmin)2+c(Fmax-Fmin)1，FmaxAnd FminThe values a, b, and c are respectively the maximum value and the minimum value of the first clamping force within the preset range, that is, the maximum value and the minimum value of the first clamping force calculated in step S121, a, b, and c are adjustable coefficients, and different change rates are obtained through different values of a, b, and c, so that the change rates are nonlinear, and the values of a, b, and c can be calculated through a gaussian function or can be set in a manual setting manner.
S123: formulating a change spiral line with the curvature radius within a preset range according to the nonlinear change rate;
specifically, in the modeling process, the minimum value or the maximum value in the preset range is used as the initial value, then different change rates are obtained by adjusting the values of a, b and c, and the curvature radius of the arc-shaped track is adjusted according to the different change rates, so that the curvature radius in the adjusting process is presented in a spiral line state in the graph.
S124: and calculating the sensitivity of the jaw model to the pipe with the same diameter according to the second clamping force and the changing spiral line.
Wherein the sensitivity is
FiThe second clamping force calculated in step S122, A is the rotation angle of the spiral line changed in step S123, PiIs the diameter of the tube, KiIs the nonlinear rate of change in step S122.
In the other embodiment, the curvature radius of the arc-shaped track is adjusted in a nonlinear change rate mode, the diameter of the pipe is adjusted, the clamping force of the jaw model on the pipe with different diameters based on different curvature radii is calculated, and the sensitivity of the jaw model on the pipe with different diameters based on the clamping force is calculated through the clamping force, so that in subsequent design, the corresponding curvature radius is selected for design according to the comprehensive consideration of the clamping force and the sensitivity required by the pipe with different diameters in the actual pipe cutting process, the calculation time is saved, the design period is shortened, the design efficiency of the pipe cutting clamp is improved, the accuracy of curvature radius selection is improved, and the reasonability of the pipe cutting clamp design is improved.
Referring to fig. 4, fig. 4 is a schematic flowchart illustrating a specific process of step S12 in fig. 1 in a further embodiment, in the further embodiment, the model parameter in step S12 in the above embodiment further includes a friction factor, and step S12 may specifically include:
s121 a: adjusting friction factors of the arc-shaped track to calculate a first clamping force of the jaw model to a pipe with the same diameter based on different friction factors when the pipe with the same curvature radius is the same;
specifically, as can be seen from the above description in step S11, in the actual pipe cutting process, the friction force generated between the portions where the arc-shaped rail and the jaws are engaged also has a great influence on the clamping force generated when the jaws clamp the pipe, and different friction forces may influence the moving speed of the jaws during the rotation of the rotating plate, thereby influencing the fluctuation of the generated clamping force.
The friction factor can be set in an artificial setting mode and corresponds to the roughness of the rotating plate and the clamping jaws.
S121 b: the curvature radius of the arc-shaped track is adjusted in a linear change rate mode within a preset range, so that the first clamping force of the jaw model on the pipe with the same diameter is calculated based on different curvature radii when different friction factors exist.
Specifically, the curvature radius of the arc track is adjusted in a linear rate within a preset range, and the content in step S121a is executed when the curvature radius is adjusted to each curvature radius.
It is to be understood that, in the further embodiment, the curvature radius may also be adjusted in a non-linear change rate manner as in the above-mentioned another embodiment, so as to calculate the second clamping force and the sensitivity, the two principles are the same, and the difference is only that the friction factor needs to be adjusted in the process of adjusting the curvature radius, and therefore, the description is not repeated herein.
In the further embodiment, in the process of adjusting the curvature radius, the friction factor is adjusted simultaneously, so that the clamping force generated by the jaw model is calculated based on the friction factor and the curvature radius of the arc-shaped track simultaneously, and therefore, in the subsequent design, the corresponding curvature radius and the friction factor are selected for design according to the clamping force required by pipes with different diameters in the actual pipe cutting process, and the design of the pipe cutting clamp is more in line with the actual pipe cutting requirement while the calculation time is saved, the design period is shortened, and the design efficiency of the pipe cutting clamp is improved.
Referring to fig. 5, fig. 5 is a schematic flowchart of a second embodiment of the optimization method for a pipe cutting fixture provided in the present application, where steps S21, S23, and S24 in this embodiment are respectively the same as steps S11, S12, and S13 in the first embodiment, and are not described herein again, and the optimization method in this embodiment further includes:
s22: and calculating the adjustment range of the curvature radius according to the maximum preset diameter and the minimum preset diameter of the pipe.
Specifically, the lengths of the arc tracks at the maximum preset diameter and the minimum preset diameter of the pipe are calculated through the step S12a in the first embodiment, and the maximum curvature radius and the minimum curvature radius are calculated according to the lengths of the arc tracks corresponding to the maximum preset diameter and the minimum preset diameter of the pipe, and are used as the maximum curvature radius and the minimum curvature radius within the adjustment range of the curvature radius.
The maximum preset diameter and the minimum preset diameter of the pipe can be set manually, and the maximum diameter and the minimum diameter of the pipe can be searched in a historical calculation record.
Referring to fig. 6, fig. 6 is a schematic flow chart of a third embodiment of the optimization method for a pipe cutting fixture provided in the present application, where steps S31, S33, and S34 in this embodiment are respectively the same as steps S11, S12, and S13 in the first embodiment, and are not repeated here, and the optimization method in this embodiment further includes:
s32: and adjusting working condition parameters of a dynamic model of the pipe cutting clamp to calculate the clamping force of the jaw model on the same diameter pipe based on the same model parameters under different working conditions.
Specifically, when different working conditions are calculated through the dynamic model, the clamping force of the jaw model on the pipe with the same diameter based on the same curvature radius is calculated, and then when the curvature radius of the arc-shaped track is adjusted in step S33, the clamping force of the jaw model on the pipe with the same diameter based on the curvature radius adjusted each time is calculated through the dynamic model under different working conditions.
The application still provides a cut pipe anchor clamps, should cut pipe anchor clamps and include that dynamics includes rotor plate and jack catch, and the rotor plate is equipped with the arc track, and the arc track is central symmetry for the rotation center of rotor plate, and the jack catch sets up with the cooperation of arc track respectively in order to be close to each other along the orbital direction of guide of arc when the rotor plate is rotatory, and then presss from both sides tight tubular product.
The rotating plate and the clamping jaw are prepared by the optimization method in any embodiment, namely when the pipe cutting clamp needs to be prepared, the corresponding curvature radius is selected according to the clamping force required by the pipe with the corresponding diameter in the actual pipe cutting process, so that the required rotating plate model and the required clamping jaw model are designed, the required rotating plate and the required clamping jaw are prepared through the rotating plate model and the clamping jaw model, and the design efficiency of the pipe cutting clamp is improved.
Different from the situation of the prior art, the optimization method provided by the application calculates the clamping force of the jaw model on the pipe with the same diameter based on different model parameters by adjusting the model parameters of the arc-shaped track; the diameter of the pipe is adjusted to calculate the method for the clamping force of the clamping jaw model on the pipe with different diameters based on different model parameters, so that during subsequent design, the corresponding model parameters are selected to be designed according to the clamping force required by the pipe with different diameters in the actual pipe cutting process, and the model parameters need to be calculated once in the design process due to the change of the pipe diameter, so that the calculation time is saved, the design period is shortened, and the design efficiency of the pipe cutting clamp is improved.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.
Claims (10)
1. An optimization method of a pipe cutting clamp is characterized by comprising the following steps:
establishing a dynamic model of the pipe cutting clamp, wherein the dynamic model comprises a rotating plate model and a jaw model, the rotating plate model is provided with an arc-shaped rail, and the jaw model and the arc-shaped rail are matched and arranged so as to move along the guide direction of the arc-shaped rail when the rotating plate model rotates, so that a pipe is clamped;
adjusting model parameters of the arc-shaped track to calculate the clamping force of the jaw model on the pipe with the same diameter based on different model parameters;
and adjusting the diameter of the pipe to calculate the clamping force of the jaw model on the pipe with different diameters based on the different model parameters.
2. The optimization method according to claim 1, wherein the model parameters include a radius of curvature, and the step of adjusting the model parameters of the arcuate path to calculate the clamping force of the jaw model on the same diameter pipe based on different model parameters comprises:
and adjusting the curvature radius of the arc track in a linear change rate mode within a preset range to calculate a first clamping force of the jaw model on the same-diameter pipe based on different curvature radii.
3. The optimization method according to claim 2, wherein the step of adjusting the radius of curvature of the arcuate track in a linear rate of change within a preset range to calculate the first clamping force of the jaw model on the same diameter pipe based on different radii of curvature further comprises:
adjusting the curvature radius of the arc track in a non-linear change rate mode within a preset range to calculate a second clamping force of the jaw model on the same diameter pipe based on different curvature radii, wherein the non-linear change rate delta r is a (F)max-Fmin)3+b(Fmax-Fmin)2+c(Fmax-Fmin)1Said FmaxAnd said FminThe maximum value and the minimum value of the first clamping force in the preset range are respectively, and a, b and c are adjustable coefficients.
4. The optimization method according to claim 3, wherein the step of adjusting the curvature radius of the arc-shaped track in a non-linear rate of change within a preset range to calculate the second clamping force of the jaw model to the same diameter pipe based on different curvature radii is further followed by the step of:
formulating a change spiral line of the curvature radius within the preset range according to the nonlinear change rate;
calculating the sensitivity of the jaw model to the pipe with the same diameter according to the second clamping force and the change spiral line, wherein the sensitivity is
FiFor the second clamping force, A is the angle of rotation of the varying helix, PiIs the diameter of the pipe, KiIs the non-linear rate of change.
5. The optimization method according to claim 2, wherein the model parameters further include a friction factor, and the step of adjusting the model parameters of the arc-shaped track to calculate the clamping force of the jaw model on the same diameter of the pipe based on different model parameters comprises:
adjusting the friction factor of the arc-shaped track to calculate a first clamping force of the jaw model to a pipe with the same diameter based on different friction factors when the pipe with the same curvature radius is in the same curvature radius;
and adjusting the curvature radius of the arc track in a linear change rate mode within a preset range so as to calculate first clamping force of the jaw model on the same diameter of the pipe based on different curvature radii respectively under different friction factors.
6. The optimization method according to claim 2, wherein the step of adjusting the radius of curvature of the arcuate track in a linear rate of change within a preset range to calculate the first clamping force of the jaw model on the same diameter pipe based on different radii of curvature is preceded by the step of:
calculating the length of the arc-shaped track corresponding to the pipe with the same diameter according to the path length of the pipe with the same diameter clamped by the jaw model and the rotation angle of the rotating plate model;
the step of adjusting the curvature radius of the arc-shaped track in a linear change rate manner within a preset range to calculate a first clamping force of the jaw model on a pipe with the same diameter based on different curvature radii comprises:
and adjusting the curvature radius of the arc-shaped track in a linear change rate mode within a preset range, wherein the length of the arc-shaped track is kept unchanged, so as to calculate a first clamping force of the jaw model on the pipe with the same diameter based on different curvature radii.
7. The optimization method according to claim 6, wherein the step of adjusting the model parameters of the arc-shaped track to calculate the clamping force of the jaw model on the same diameter of the pipe based on different model parameters is preceded by the step of:
and calculating the adjustment range of the curvature radius according to the maximum preset diameter and the minimum preset diameter of the pipe.
8. The optimization method according to claim 7, wherein the calculating of the adjustment range of the curvature radius according to the maximum preset diameter and the minimum preset diameter of the pipe comprises:
and calculating the maximum curvature radius and the minimum curvature radius according to the lengths of the arc tracks corresponding to the maximum preset diameter and the minimum preset diameter of the pipe.
9. The optimization method according to claim 1, wherein the step of adjusting the model parameters of the arc-shaped track to calculate the clamping force of the jaw model on the same diameter of the pipe based on different model parameters is preceded by the step of:
and adjusting working condition parameters of the dynamic model of the pipe cutting clamp so as to calculate the clamping force of the two jaw models to pipes with the same diameter based on the same model parameters under different working conditions.
10. A pipe cutting clamp is characterized by comprising a rotating plate and a clamping jaw, wherein the rotating plate is provided with an arc-shaped rail, the clamping jaw is matched with the arc-shaped rail and is arranged to move along the guide direction of the arc-shaped rail when the rotating plate rotates so as to clamp a pipe, and the rotating plate and the clamping jaw are prepared by the optimization method of any one of claims 1-9.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035862A (en) * | 1987-07-28 | 1989-09-27 | 杰斯弗·麦克尔 | Connect into the anchorage clip that the template sideband is used |
| WO1991008866A1 (en) * | 1989-12-07 | 1991-06-27 | Wesch William E Jr | Power tongs with improved gripping means |
| US5172613A (en) * | 1989-12-07 | 1992-12-22 | Wesch Jr William E | Power tongs with improved gripping means |
| US20030054091A1 (en) * | 2001-06-29 | 2003-03-20 | Harold Mukamal | Method and fixture for evaluating the quality of surface coatings |
| CN105445575A (en) * | 2015-11-04 | 2016-03-30 | 中国电子科技集团公司第四十一研究所 | Optical path de-embedding method for S parameter measurement of optical device |
| CN205165612U (en) * | 2015-10-15 | 2016-04-20 | 黄石优利福自动化装备有限责任公司 | Circular tube fixture |
| CN108189070A (en) * | 2017-12-13 | 2018-06-22 | 大族激光科技产业集团股份有限公司 | Clamping jaw |
-
2019
- 2019-05-14 CN CN201910401160.XA patent/CN111950109A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035862A (en) * | 1987-07-28 | 1989-09-27 | 杰斯弗·麦克尔 | Connect into the anchorage clip that the template sideband is used |
| WO1991008866A1 (en) * | 1989-12-07 | 1991-06-27 | Wesch William E Jr | Power tongs with improved gripping means |
| US5172613A (en) * | 1989-12-07 | 1992-12-22 | Wesch Jr William E | Power tongs with improved gripping means |
| US20030054091A1 (en) * | 2001-06-29 | 2003-03-20 | Harold Mukamal | Method and fixture for evaluating the quality of surface coatings |
| CN205165612U (en) * | 2015-10-15 | 2016-04-20 | 黄石优利福自动化装备有限责任公司 | Circular tube fixture |
| CN105445575A (en) * | 2015-11-04 | 2016-03-30 | 中国电子科技集团公司第四十一研究所 | Optical path de-embedding method for S parameter measurement of optical device |
| CN108189070A (en) * | 2017-12-13 | 2018-06-22 | 大族激光科技产业集团股份有限公司 | Clamping jaw |
Non-Patent Citations (2)
| Title |
|---|
| 万晓鹏等: "基于ADAMS的钻杆夹持机械手的动力学仿真", 机床与液压, vol. 41, no. 13, 30 July 2013 (2013-07-30), pages 142 - 143 * |
| 文怀兴等: "基于ADAMS的夹持机械手虚拟设计及其结构优化", 机械设计与制造, no. 3, 30 March 2010 (2010-03-30), pages 75 - 77 * |
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