CN209831015U - Automatic alignment tool suitable for energetic material processing - Google Patents
Automatic alignment tool suitable for energetic material processing Download PDFInfo
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- CN209831015U CN209831015U CN201920368071.5U CN201920368071U CN209831015U CN 209831015 U CN209831015 U CN 209831015U CN 201920368071 U CN201920368071 U CN 201920368071U CN 209831015 U CN209831015 U CN 209831015U
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Abstract
The utility model discloses an automatic alignment instrument that is suitable for energetic material processing, including the cutter arbor, the roller, the amesdial, its characterized in that: the side part of the execution tail end of the cutter bar is provided with a roller in a threaded fastening mode, the outer ring of the roller is an execution component for precise alignment operation, the dial indicator is installed at the bottom of the execution tail end of the cutter bar in a screw fastening mode, and a measurement thimble of the dial indicator is in centering contact with the outer ring of a bearing of the roller. The method is suitable for automatic application of the turning, clamping and positioning process of rotary workpieces, and provides reliable key technical support for near-field unmanned requirements of PBX material processing. The utility model has the advantages of simple structure, control convenience, low cost, can regard as advantages such as lathe annex use, and need not external power, avoid introduction such as dangerous source heat, electricity, power, can effectively promote energetic material machining's essential safety level and the integrated reliability of automation unit system.
Description
Technical Field
The utility model relates to an energetic material machining technical field especially relates to the automatic alignment instrument who is suitable for energetic material processing.
Background
The high-energy explosive PBX (Polymer bound Explosives) is an energetic material with excellent comprehensive performance, is used as a core functional component material of various important warheads, and is widely applied to various weapon systems of land, sea, air and cannon. With the rapid development of weaponry systems, the need for precision machining of various energetic material components has increased, and it has become desirable to increase the level of automation of the machining process. Particularly for the machining of the rotating body parts with the rapidly increased number, the precise alignment procedure before the adsorption and clamping can be realized only by manually knocking for many times, which depends on experience and has safety and quality risks. Therefore, according to the special design specifications of energetic material machining devices, developing a simple, easy, accurate and reliable automatic alignment tool system has great significance for safe and efficient production of national defense and military departments.
At present, widely used revolving body alignment methods at home and abroad mainly include a barrier positioning method, an alignment rod pushing method, a chuck self-centering method, an elastic deformation positioning method and the like. For energetic material cutting, the existing alignment tool is limited by application conditions, alignment precision, critical criterion and the like, so that the special requirements of the automatic operation of energetic materials are difficult to meet. Chinese patent publication No. CN204565139U discloses a self-centering alignment tool, comprising: the self-centering alignment tool does not depend on the experience of an operator, and can quickly determine the coaxiality of the workpiece by using a visual method; the Chinese patent with publication number CN203635953U discloses a quick alignment tool for turning shaft forgings, which aims to solve the problems that the large-size turning alignment needs to be repeatedly rotated and a workpiece blank is knocked for many times, the labor intensity is high, and the efficiency is low, and comprises a support body, a bearing, a gasket and a shaft, wherein the bearing rolls to push and align the workpiece; chinese patent publication No. CN203459693U discloses a workpiece alignment tool for a lathe, which includes a body, a guide bolt, a rolling bearing, a washer and a nut, wherein the rolling bearing is installed at the front end of the body to be integrated, and alignment is realized by using the contact of the rolling bearing and the outer circle or end face of the workpiece; chinese patent publication No. CN103846462A discloses a turning alignment tool, which comprises an alignment rod, a bearing, a positioning pin and a positioning table, wherein when shaft parts are turned, the bearing can be in contact with the parts to align the shaft parts; chinese patent publication No. CN202571328U discloses an excircle alignment tool, which comprises a support block, a roller, a pin shaft, and a retaining ring for the shaft, and the alignment is achieved by using the contact alignment between the roller and the component.
By comprehensively observing, the prior art and the utility model report still have the following insufficiencies to solving the accurate alignment problem in the automatic processing of energetic materials: 1, the design principle of the alignment tool is unclear, critical criterion criteria are lacked, data acquisition and analysis are difficult to carry out, and automation is not facilitated; 2, the alignment rod ejection method and the device have low integration level, still need to make a meter for calibration and are limited by roller profile errors and operation experience; most 3 utility models aim at the application in the field, lack the technical expansibility, are difficult to satisfy energetic material machining tool operation requirement. Therefore, based on the mature processing technology of energetic materials, a set of safe, reliable, simple, practical, automatic and accurate alignment tool system is designed and researched, which is necessary to solve the practical production problem.
SUMMERY OF THE UTILITY MODEL
To foretell a great deal of problem, the utility model provides an automatic alignment instrument and method that are suitable for energetic material processing can effectively solve the technological problem of the automatic alignment of gyration type energetic part processing, and applicable in multiple general numerical control lathe scene provides reliable key technical support for satisfying PBX energetic material course of working unmanned requirement.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
the automatic alignment tool suitable for energetic material processing comprises a cutter bar, a roller and a dial indicator, wherein the roller is installed on the side part of the executing end of the cutter bar in a threaded fastening mode, the outer ring of the roller is an executing component for precise alignment operation, the dial indicator is installed at the bottom of the executing end of the cutter bar in a screw fastening mode, a measuring thimble of the dial indicator makes centering contact with the outer ring of a bearing of the roller, and the eccentric quantity of the outer ring of the roller can be measured sensitively.
The roller comprises a precise needle bearing and a fastening mandrel accessory, the cylindricity of a bearing outer ring of the roller is not more than 0.003mm, the rotation error is not more than 0.02mm, the measuring range of the dial indicator is 0-1 mm, and the precision is 0.001 mm.
The utility model discloses another aspect provides foretell be suitable for the alignment method of the automatic alignment instrument of energetic material processing, adopts progressively revising the mode with this instrument and machine tool system cooperation and can realize quick, the accurate alignment operation to rotating part.
Further, the specific implementation steps are as follows:
a, selecting a precision turning machine tool, installing the alignment tool, and performing centering adjustment on a main shaft of the roller to ensure that the maximum eccentric vector of a workpiece can be mapped to the eccentric measurement of the roller;
b, accurately measuring the outer diameter of the workpiece to be aligned to reach micron-scale precision, then resetting the dial indicator, and finishing all process preparation work of the workpiece and the sucker before alignment on the machine tool spindle according to the processing operation requirement of the energetic material;
c, starting a machine tool system, rotating the main shaft at a low speed, and simultaneously gradually approaching the alignment tool roller to a workpiece to finish the tool setting calibration operation; selecting a measured outer surface process reference to avoid interference, and compiling a response automatic slow-feeding alignment program by taking the process reference dimension as the minimum distance of the centripetal feeding of the roller;
d, starting an alignment program or applying hand wheel pulsation to slowly advance the roller until the roller is in local contact with the maximum eccentric part of the workpiece, and paying attention to the change of the number of the dial indicator at any time;
e, continuing to execute the step of changing in, and stopping the feeding operation when the dial indicator number is stable, namely the degree is unchanged or the pointer is minimally deflected;
and f, stopping the main shaft by means of a machine tool system, automatically withdrawing the execution tool to finish the alignment of the workpiece, tightly sucking the workpiece, and then calling a cutting tool to prepare for subsequent processing.
The utility model discloses a be suitable for alignment method of automatic alignment instrument of energetic material processing, the design process of the accurate alignment method of gyration type part that relates is as follows: if the axis position of the main shaft of the numerical control lathe is a point O, the offset circle center of the rotary workpiece initially placed on the suction surface of the suction disc is a point O1, and the vector isThe eccentric vector of the workpiece is obtained, and the aim of workpiece alignment is to reduce the die length of the eccentric vector as much as possible; when the workpiece rotates with the spindle, the maximum eccentricity vector on the outer circle isAnd belongs to a rotary motion vector; at the moment, if a machine tool feeding system is used, a unidirectional slow-advancing ejection correction mode is adopted to gradually compensate the eccentric vector on the outer circle of the workpieceThe alignment operation is finished when the part tends to be zero, but the value is stable and tends to a certain stable value due to the accuracy of main shaft rotation, part roundness and the like.
The further proposal is that the slowly advancing workpiece alignment process can be similar to a static force balance process, the pushing action area of the workpiece by the externally tangent roller belongs to high-pair contact, FnBeing a radial positive pressure, FfIs the friction between the roller and the workpiece, FhThe direction angle alpha of the resultant force applied to the workpiece, namely the actual roller thrust, is smaller and better, if the direction angle alpha is zero, the roller thrust is only used for aligning the workpiece, and the further eccentricity of the workpiece is not induced; however, by the formula μ ═ tan α ═ Ff/FnIt can be known that to improve the utility model discloses the performance of alignment instrument must furthest reduce FfSo that a rolling antifriction roller is preferred as the work alignment execution end; in addition, the smaller the revolution radius r of the roller is, the more beneficial the effective pushing action of the one-way contact is, and the roller with the smaller value of r is preferred under the condition of allowable stress and precision.
The beneficial effects of the utility model reside in that:
the utility model discloses an automatic alignment instrument that is suitable for energetic material processing, the existing ripe machining process of the energetic material of footing have the industry standard interface can use with present general processing equipment cooperation, are suitable for the automation of gyration type work piece turning clamping positioning process to use, provide reliable key technical support for the unmanned demand of near field of PBX material processing. The utility model has the advantages of simple structure, control convenience, low cost, can regard as advantages such as lathe annex use, and need not external power, avoid introduction such as dangerous source heat, electricity, power, can effectively promote energetic material machining's essential safety level and the integrated reliability of automation unit system.
The utility model discloses the gyration error of selected roller can not cause the alignment precision of work piece to reduce, because when just taking place the ejection effect, the work piece of gyration is reaction can make the roller outer lane take place the skew discontinuously, and then the amesdial that leads to after zeroing takes place the registration undulant, treat that the work piece is tangent to take place complete ejection effect back constantly with the roller, its interact power is even, the eccentric quantity of roller outer lane also will be fixed, the amesdial registration tends to stably, finally accomplish the automatic alignment function of work piece.
The utility model discloses put forward unilateral ejection roll antifriction design principle innovatively, and utilize the method of revising the compensation step by step, carry out integrated design with accurate roller, amesdial and standard cutter arbor, realize the accurate, quick alignment operation of rotating part with the help of the lathe system; in principle design and technological realization two aspects the utility model discloses a performance control gives effective guidance, like error source, accuracy control, data acquisition and judgement index etc. have better technical spreading value, and this also provides the new approach for promoting safety, high-quality and the high-efficient processing technology development of this type of work piece.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the embodiments or the drawings needed in the prior art description, and obviously, the drawings in the following description are only some embodiments of the embodiments, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic three-dimensional structure diagram of an automatic precise alignment tool suitable for processing energetic materials according to the present invention.
Fig. 2 is a schematic diagram of the alignment method of the automatic precise alignment tool suitable for processing energetic materials of the present invention, which shows the method for realizing the automatic alignment of the revolving body by matching the tool with the machine tool system.
Fig. 3 is a schematic diagram of the design process of the alignment method of the automatic precise alignment tool suitable for processing energetic materials of the present invention.
As shown, in which corresponding reference characters designate:
1 cutter bar, 2 rollers, 3 dial indicators, 4 workpieces, 5 suckers and 6 spindles.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-3, the automatic alignment tool suitable for processing energetic materials of the present invention is based on the rolling wear reduction principle and the gradual correction and compensation method, and integrates and designs the precision roller, the dial indicator and the standard cutter bar, and realizes the precision and quick alignment function for the rotary component by means of the machine tool system. The utility model discloses an automatic accurate alignment instrument that is suitable for energetic material processing, it includes cutter arbor 1, roller 2, amesdial 3, its characterized in that: the tool bar 1 meets the general design standard of the industry, can be freely installed on various numerical control lathes for use, the execution tail end of the tool bar is provided with the precise roller 2 in a threaded fastening mode, the roller 2 is designed in a needle bearing shaft system, the outer ring of the roller is an execution component for precise alignment operation, the dial indicator 3 is installed at the execution tail end of the tool bar 1 in a screw fastening mode, the measuring thimble of the dial indicator is in centering contact with the bearing outer ring of the roller 2, the eccentric quantity of the roller outer ring can be flexibly measured, and the tool can be matched with a machine tool system to realize the automatic precise alignment function of a rotary component.
In order to ensure the utility model discloses an operational performance and system reliability, carry on the optimization to its key function device and important design parameter, in this embodiment, as shown in fig. 1, the roller 2 is made by accurate bearing and fastening mandrel annex, and the cylindricity of its bearing outer lane is not more than 0.003mm, and the gyration error is not more than 0.02mm, can preferably use cam roller standard cell, such as THK company CFS-A series product; the measuring range of the dial indicator 3 is 0-1 mm, the precision is 0.001mm, the device meets the using requirement of energetic material machining measuring tools, and periodic calibration and performance inspection are carried out.
As shown in fig. 2, the utility model provides a be suitable for the alignment method of the automatic accurate alignment instrument of energetic material processing, the utility model discloses tool cooperation lathe system adopts progressively revising the mode can realize the quick, accurate alignment operation to revolving part, and the concrete implementation step is as follows: a, selecting a precision turning machine tool, installing the alignment tool, and performing centering adjustment on a main shaft of the roller 2 to ensure that the maximum eccentric vector of a workpiece can be mapped to the eccentric amount measurement of the roller 2; b, accurately measuring the outer diameter of the workpiece to be aligned, and finishing all process preparation work of the workpiece 4 and the sucker 5 before alignment on the machine tool spindle 6 by the zero clearing dial indicator 3 according to the processing operation requirement of the energetic material; c, starting a machine tool system, rotating the main shaft at a low speed, and simultaneously gradually approaching the alignment tool roller 2 to a workpiece to finish tool setting calibration operation; selecting a measured outer surface process reference to avoid interference, and programming a corresponding automatic slow-feeding alignment program by taking the process reference dimension as the minimum distance of the centripetal feeding of the roller; d, starting an alignment program or applying hand wheel pulsation to slowly advance the roller 2 until the roller is in local contact with the maximum eccentric part of the workpiece 4, and paying attention to the change of the indication number of the dial indicator 3 at any time; e, continuing to execute the slow-feeding step, and stopping feeding operation when the number of the dial indicator 3 is stable, namely the degree is unchanged or the pointer is in minimum deflection; and f, stopping the main shaft by means of a machine tool system, automatically withdrawing the execution tool to finish the alignment of the workpiece, tightly sucking the workpiece, and then calling a cutting tool to prepare for subsequent processing.
Finally, the design process of the precise alignment method for rotary parts according to the present invention is explained, as shown in fig. 3, assuming that the axis position of the main shaft 6 of the numerically controlled lathe is point O, the offset center of the circle of the rotary workpiece 4 initially placed on the suction surface of the suction cup 5 is point O1, and the vector is given byI.e. the eccentricity vector of the workpiece, the aim of so-called workpiece alignment is to minimize the die length of the eccentricity vector. When the workpiece 4 rotates with the main shaft, the maximum eccentric vector whose outer circle radius is R isAnd belongs to a rotary motion vector. At the moment, if a machine tool feeding system is used, a unidirectional slow-advancing ejection correction mode is adopted to gradually compensate the eccentric vector on the outer circle of the workpiece 4The alignment operation is finished when the part tends to be zero, but the value is stable and tends to a certain stable value due to the accuracy of main shaft rotation, part roundness and the like. As described above, the creep correction process may be approximated as a static forceDuring the balancing process, the pushing action area of the workpiece 4 subjected to the circumscribed roller 2 is in high-pair contact, the plane stress analysis is shown in figure 3, FnBeing a radial positive pressure, FfIs the friction between the roller and the workpiece, FhThe smaller the direction angle alpha of the resultant force applied to the workpiece, namely the actual roller thrust, the better, if the direction angle alpha is zero, the roller thrust is only used for aligning the workpiece, and the further eccentricity of the workpiece is not induced. However, by the formula μ ═ tan α ═ Ff/FnIt can be known that to improve the utility model discloses the performance of alignment instrument must furthest reduce FfSo that the rolling antifriction precision roller 2 is preferable as the work alignment execution end. In addition, the smaller the radius r of gyration of the roller 2, the more favorable the effective pushing action of the one-way contact, and the smaller r value roller is preferred under the condition of allowable stress and precision. The utility model discloses another advantage of so design lies in: the rotation error of the selected roller 2 cannot cause the alignment precision of the workpiece 4 to be reduced, when the ejection action just occurs, the outer ring of the roller 2 can be deviated due to the discontinuous reaction of the rotated workpiece 4, and then the dial indicator 3 after the zero return is caused to generate the registration fluctuation, after the workpiece 4 and the roller 2 are tangent at all time and complete ejection action occurs, the interaction force is uniform, the eccentric amount of the outer ring of the roller 2 is fixed, the 3 registration of the dial indicator tends to be stable, and finally the automatic alignment function of the workpiece 4 is completed.
The utility model discloses the gyration error of selected roller can not cause the alignment precision of work piece to reduce, because when just taking place the ejection effect, the work piece of gyration is reaction can make the roller outer lane take place the skew discontinuously, and then the amesdial that leads to after zeroing takes place the registration undulant, treat that the work piece is tangent to take place complete ejection effect back constantly with the roller, its interact power is even, the eccentric quantity of roller outer lane also will be fixed, the amesdial registration tends to stably, finally accomplish the automatic alignment function of work piece.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features. In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (2)
1. Be suitable for automatic alignment instrument of energetic material processing, including cutter arbor, roller, amesdial, its characterized in that: the side part of the execution tail end of the cutter bar is provided with a roller in a threaded fastening mode, the outer ring of the roller is an execution component for precise alignment operation, the dial indicator is installed at the bottom of the execution tail end of the cutter bar in a screw fastening mode, and a measurement thimble of the dial indicator is in centering contact with the outer ring of a bearing of the roller.
2. The automatic alignment tool for energetic material processing as claimed in claim 1, wherein said rollers include precision needle bearings and fastening mandrel attachments, the bearing outer race of said rollers has a cylindricity of no more than 0.003mm, a rotation error of no more than 0.02mm, and said dial gauge has a range of 0 to 1mm with a precision of 0.001 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920368071.5U CN209831015U (en) | 2019-03-21 | 2019-03-21 | Automatic alignment tool suitable for energetic material processing |
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| CN201920368071.5U CN209831015U (en) | 2019-03-21 | 2019-03-21 | Automatic alignment tool suitable for energetic material processing |
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| CN209831015U true CN209831015U (en) | 2019-12-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894899A (en) * | 2019-03-21 | 2019-06-18 | 中国工程物理研究院化工材料研究所 | Automatic capturing tool suitable for Machining energetic materials |
| CN112676891A (en) * | 2020-12-11 | 2021-04-20 | 中国工程物理研究院机械制造工艺研究所 | Split type aligning device processed at high precision and aligning method thereof |
-
2019
- 2019-03-21 CN CN201920368071.5U patent/CN209831015U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894899A (en) * | 2019-03-21 | 2019-06-18 | 中国工程物理研究院化工材料研究所 | Automatic capturing tool suitable for Machining energetic materials |
| CN109894899B (en) * | 2019-03-21 | 2024-02-13 | 中国工程物理研究院化工材料研究所 | Automatic alignment tool suitable for processing energetic materials |
| CN112676891A (en) * | 2020-12-11 | 2021-04-20 | 中国工程物理研究院机械制造工艺研究所 | Split type aligning device processed at high precision and aligning method thereof |
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