CN111112954A - Finish machining process method for inner cavity of floating drum of liquid floated gyroscope - Google Patents

Finish machining process method for inner cavity of floating drum of liquid floated gyroscope Download PDF

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Publication number
CN111112954A
CN111112954A CN202010003657.9A CN202010003657A CN111112954A CN 111112954 A CN111112954 A CN 111112954A CN 202010003657 A CN202010003657 A CN 202010003657A CN 111112954 A CN111112954 A CN 111112954A
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China
Prior art keywords
buoy
finish machining
inner cavity
handle
coaxially
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CN202010003657.9A
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CN111112954B (en
Inventor
郭海营
侯熙硕
陈明
高建
刘勇
陈鹏
张恺
刘媛媛
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707th Research Institute of CSIC
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707th Research Institute of CSIC
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2703/00—Work clamping
    • B23Q2703/02—Work clamping means
    • B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention relates to a fine machining process method for an inner cavity of a floating barrel of a liquid floated gyroscope, which mainly comprises the following steps: firstly, reserving and additionally arranging a process handle, wherein the process of the buoy before the inner cavity finish machining is to roughly machine the outer wall, and a boss at the tail end of the buoy is not left under the general condition; then, finish machining is carried out, under the condition that a process handle is additionally arranged, a designed special tool and a pressing ring are used for clamping the buoy, and the inner cavity of the buoy is subjected to finish machining; and finally, cutting off the process handle, performing interference fit on the inner cavity of the buoy and the frame part after finish machining is completed to form a combined body, and then performing finish machining on the outer wall of the buoy, and removing the additionally arranged process handle at the same time. The method relates to a process handle in the working procedures before and after finish machining, does not add additional working procedures, and obviously improves the production efficiency compared with the traditional gluing method.

Description

Finish machining process method for inner cavity of floating drum of liquid floated gyroscope
Technical Field
The invention belongs to the technical field of precision machining, and relates to finish machining of an inner cavity of a floating drum of a liquid floated gyroscope, in particular to a finish machining process method of the inner cavity of the floating drum of the liquid floated gyroscope.
Background
A buoy part in the liquid floated gyroscope belongs to a thin-wall part and plays a role in protecting and supporting a motor rotor, a frame, an internal circuit, a sensor and the like in the gyroscope. Because the motor rotor, the circuit, the sensor and the like in the buoy belong to ultra-precise parts, the requirement on the processing quality of the inner cavity of the buoy is high in the installation and use processes, and the requirements on the shape and position and the surface quality are met. Therefore, in the process of processing the inner cavity of the buoy, particularly in the final finish machining, the processing quality of the inner cavity of the buoy is guaranteed to be very important. However, since the buoy is a thin-wall part, if the clamping mode is improper during the machining process, the buoy is easy to deform greatly, so that the required form and position size and surface quality cannot be ensured. In order to prevent the generation of large deformation in the finish machining process, the inner cavity of the buoy is usually subjected to a gluing mode in the prior art, namely, each buoy is stained on a tool by using specific glue (each buoy needs one tool), and then finish machining is carried out. As the clamping of the buoy is not involved in the process, the buoy is only adhered to a tool, so that the buoy is basically not deformed. However, the gluing method involves the steps of processing, gluing, fixing, removing glue, processing and the like of a large number of tools, so that the fine processing efficiency of the buoy is seriously influenced, and the production efficiency is reduced. In addition, the thickness of the adhesive coating on the adhesive surface and the adhesive quality cannot be effectively controlled, so that the processing quality of the buoy cannot be stably controlled in the processing process.
Through the knowledge of the applicant to the related art in the field, no finish machining process method with high efficiency and stable machining quality exists for the finish machining of the inner cavity of the buoy.
Through the search of patent publications, no published patent document related to the application of the invention is found. A
Disclosure of Invention
The invention aims to provide a finish machining process method for an inner cavity of a floating drum of a liquid floated gyroscope, which effectively solves the problems of low production efficiency and unstable quality in the finish machining process of the inner cavity of the floating drum of the liquid floated gyroscope by additionally arranging a process handle in the finish machining process.
The purpose of the invention is realized by the following technical scheme:
a finish machining process method for an inner cavity of a buoy of a liquid floated gyroscope comprises the following steps:
⑴ float craft handle processing
Roughly turning the outer wall of the buoy workpiece, and leaving a boss at the tail end of the buoy as a process handle;
⑵ finishing inner hole of float bowl
Taking the end face of the side of the technological handle made of the buoy as a positioning reference, coaxially installing the buoy into a special tool face to face, coaxially fixing the buoy on the tool by the technological handle by using a compression ring, then carrying out finish machining on the inner cavity of the buoy until the machining is finished, loosening the compression ring after the machining is finished, dismounting the buoy, and preparing for the next procedure;
⑶ float bowl outer wall finishing and craft handle removal
After finishing the finish machining of the inner cavity of the buoy, the frame part is required to be in interference fit with the inner hole of the buoy to form a combined body, then finish machining is carried out on the outer wall of the buoy by using the double-top clamping combined body, and meanwhile, the reserved process handle is directly machined off, namely, the reserved process handle is cut off while the finish machining is carried out on the outer wall of the buoy.
And moreover, the special tool for the step ⑵ is of a step-shaped cylindrical structure and is coaxially manufactured by a fixed column and a table column, external threads are manufactured on the outer edge cylindrical surface of the table column, a tool positioning surface is manufactured on the outer side end surface of the table column, and the diameter of the outer circle of the table column is larger than or equal to that of the float technological handle.
Furthermore, the pressing ring of step ⑵ is a circular ring structure, and the inner hole of the circular ring is formed with an internal thread which is engaged with an external thread formed on the outer edge cylindrical surface of the pillar.
And the assembling mode of the buoy workpiece, the special tool and the compression ring in the step ⑵ is as follows:
the outer edge cylindrical surface of the special tool coaxially corresponds to the outer end surface of the technological handle of the buoy workpiece, then the compression ring is coaxially sleeved in the buoy workpiece, and the internal thread of the compression ring is meshed with the external thread formed on the outer edge cylindrical surface of the table column for fastening, so that the three parts are coaxially fixed.
And the frame part of the step ⑶ is composed of a front circular plate, a support plate, a rear circular plate and a top head coaxially and fixedly arranged on the outer end face of the front circular plate, the outer circle diameter of the front circular plate and the inner hole diameter of the float bowl after finish machining form a size of interference fit, and the length between the front circular plate and the rear circular plate is the same as the length of the float bowl workpiece.
The invention has the advantages and positive effects that:
1. the invention can obviously reduce the use of raw materials, only needs to design one set of tool when the inner cavity of the buoy is subjected to fine processing, effectively reduces the production cost and the waste, and overcomes the technical problem that the material used for processing the tool is more than the buoy parts because a large number of tools need to be processed in the traditional 'gluing' processing method.
2. The invention can obviously improve the processing efficiency of the precise processing of the inner cavity of the buoy, only the process handles are respectively added and removed in the processes before and after the precise processing, the auxiliary time is obviously reduced, the processing efficiency can be effectively improved, and the defects that the conventional 'gluing' processing method firstly needs to process a tool for each buoy, the processing time of the tool is longer, and the processing efficiency is influenced are overcome; and the process of bonding the buoy to the tool, heating and fixing in the later period, removing the glue and the like is complicated, the auxiliary time is long, and the processing efficiency is influenced.
3. The invention can obviously improve the quality and stability of the float finishing, and the float can be stably fixed on a tool by taking the end surface of the float as a positioning surface and fixing the process handle through the clamp ring, so that the float has enough rigidity to resist radial deformation during processing; in addition, the method compresses the end part of the buoy, the wall thickness of the end part is large, so that the buoy is basically not deformed in the axial direction, and large errors cannot be generated in the axial direction when the inner cavity is subjected to finish machining, so that the machining errors in the finish machining of the inner cavity of the buoy can be effectively controlled.
4. The invention adds the process handle in the previous process of finish machining to provide favorable conditions and foundation for finish machining, and then removes the process handle in the next process of finish machining, thus providing a new idea and method for finish machining of the easily deformed parts with thin walls such as the buoy.
Drawings
FIG. 1 is a schematic perspective view of a buoy workpiece with a craft shank of the present invention;
FIG. 2 is a schematic view of a feed path for the float bowl work piece process shank of FIG. 1;
FIG. 3 is a schematic perspective view of the special tool for machining an inner hole according to the present invention;
FIG. 4 is a schematic perspective view of a clamp ring of the present invention;
FIG. 5 is a schematic perspective view of the assembly of the float bowl workpiece with the process handle, the special tooling and the clamp ring according to the present invention;
FIG. 6 is a schematic perspective view of the outer wall of the float bowl workpiece machined and frame components with the process shanks removed in accordance with the present invention;
FIG. 7 is a schematic perspective view of the assembled pontoon workpiece and frame parts with the boat shanks of the invention;
FIG. 8 is a view of the present invention illustrating the finish turning of the outer wall of the float bowl by the dual apex clamping assembly;
fig. 9 is a view of the invention of fig. 8 with the fabrication of the handle cut away.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings; the present examples are illustrative and not restrictive, and the scope of the invention is not limited thereto.
A finish machining process method for an inner cavity of a buoy of a liquid floated gyroscope comprises the following steps:
⑴ float craft handle processing
The outer wall of the buoy workpiece 2 is subjected to rough turning, a boss 1 is left at the tail end of the buoy to serve as a technological handle, namely, the technological handle which can be used for compaction is reserved for a buoy inner cavity finish machining process in the rough turning of the outer wall of the buoy, as shown in fig. 1. The feed route of the cutter during rough turning is shown in fig. 2, the buoy workpiece is fixed on a lathe conventionally, the technological handle is processed by a turning tool 4 according to the feed route 3, and a boss is reserved in the feed process to serve as the technological handle of the next finish machining process.
⑵ finishing inner hole of float bowl
The end face of the side, where the technological handle is made, of the buoy is used as a positioning reference, the buoy is coaxially installed in a special tool in a face-to-face mode, and the buoy is coaxially fixed on the tool through the technological handle by using a compression ring, and the reference is made in figure 5. At this moment, the buoy workpiece is firmly connected with the special tool, the rigidity requirement and the stability requirement during buoy processing can be guaranteed, then the inner cavity of the buoy is subjected to finish machining until the processing is completed, the clamp ring is loosened after the processing is completed, the buoy is detached, and the next procedure is prepared.
The structure diagram of the special tool is shown in figure 3, the special tool is of a step-shaped cylindrical structure and is coaxially manufactured by a fixed column 5 and a table column 6, external threads are manufactured on the outer edge cylindrical surface of the table column, a tool positioning surface 7 is manufactured on the outer side end surface of the table column, and the diameter of the outer circle of the table column is larger than or equal to that of the technological handle of the buoy. The structure of the compression ring is shown in fig. 4, and is a circular ring structure, wherein an inner hole 9 of a circular ring 8 is provided with an inner thread, and the inner thread is meshed with an outer thread on the outer edge cylindrical surface of the table column.
The assembly mode of the float bowl workpiece, the special tool and the clamp ring is as follows:
the outer edge cylindrical surface of the special tool coaxially corresponds to the outer end surface of the technological handle of the buoy workpiece, then the compression ring is coaxially sleeved in the buoy workpiece, and the internal thread of the compression ring is meshed with the external thread formed on the outer edge cylindrical surface of the table column for fastening, so that the three parts are coaxially fixed.
⑶ float bowl outer wall finishing and craft handle removal
After finishing the finish machining of the inner cavity of the buoy, a frame part is coaxially sleeved in the buoy, the frame part and the inner hole of the buoy are subjected to interference fit, after a combined body is formed, the outer wall of the buoy is subjected to finish machining by using the double-top clamping combined body, and meanwhile, a reserved process handle is directly machined off, namely, the reserved process handle is cut off while the outer wall of the buoy is subjected to finish machining.
The structure diagram of the frame part is shown in fig. 6, and the frame part is composed of a front circular plate 12, a support plate 11, a rear circular plate 10 and a top head 13 coaxially and fixedly mounted on the outer end face of the front circular plate, the excircle diameter of the front circular plate and the diameter of an inner hole after the float bowl is subjected to finish machining form the size of interference fit, the length between the front circular plate and the rear circular plate is the same as that of a float bowl workpiece, and the combination state of the float bowl and the frame part is shown in fig. 7.
The processing process of the buoy by adopting the double-tip clamping assembly is shown in figures 8 and 9, and the assembly of the buoy and the frame part is coaxially jacked on the left tip 14 and the right tip 15, so that the outer wall of the buoy can be subjected to finish turning on a lathe, and meanwhile, a reserved process handle is cut off.

Claims (5)

1. A finish machining process method for an inner cavity of a floating barrel of a liquid floated gyroscope is characterized by comprising the following steps: the method comprises the following steps:
⑴ float craft handle processing
Roughly turning the outer wall of the buoy workpiece, and leaving a boss at the tail end of the buoy as a process handle;
⑵ finishing inner hole of float bowl
Taking the end face of the side of the technological handle made of the buoy as a positioning reference, coaxially installing the buoy into a special tool face to face, coaxially fixing the buoy on the tool by the technological handle by using a compression ring, then carrying out finish machining on the inner cavity of the buoy until the machining is finished, loosening the compression ring after the machining is finished, dismounting the buoy, and preparing for the next procedure;
⑶ float bowl outer wall finishing and craft handle removal
After finishing the finish machining of the inner cavity of the buoy, the frame part is required to be in interference fit with the inner hole of the buoy to form a combined body, then finish machining is carried out on the outer wall of the buoy by using the double-top clamping combined body, and meanwhile, the reserved process handle is directly machined off, namely, the reserved process handle is cut off while the finish machining is carried out on the outer wall of the buoy.
2. The fine machining process method for the inner cavity of the floating pontoon of the liquid floating gyroscope as claimed in claim 1, wherein the tool dedicated in the step ⑵ is of a step-shaped cylindrical structure and is coaxially manufactured by a fixed column and a platform column, an external thread is manufactured on the outer edge cylindrical surface of the platform column, a tool positioning surface is manufactured on the outer side end surface of the platform column, and the diameter of the outer circle of the platform column is larger than or equal to that of the technological handle of the pontoon.
3. A finish machining process for the inner cavity of a float bowl of a liquid floating gyroscope according to claim 1, wherein the pressing ring in step ⑵ is of a circular ring structure, and an inner thread is formed in an inner hole of the circular ring and meshed with an outer thread formed on the outer edge cylindrical surface of the table column.
4. A finish machining process method for an inner cavity of a floating drum of the liquid floating gyroscope according to claim 1 is characterized in that the assembling mode of the floating drum workpiece, the special tool and the compression ring in the step ⑵ is that the outer edge cylindrical surface of the special tool coaxially corresponds to the outer end surface of a process handle of the floating drum workpiece, then the compression ring is sleeved in the floating drum workpiece coaxially, and then the internal thread of the compression ring is meshed with the external thread made on the outer edge cylindrical surface of the stand column for fastening, so that the floating drum workpiece, the special tool and the compression ring are coaxially fixed.
5. A finish machining process method for an inner cavity of a floating pontoon of a liquid floating gyroscope according to claim 1, wherein the frame part in the step ⑶ is composed of a front circular plate, a supporting plate, a rear circular plate and a top head coaxially and fixedly arranged on the outer end face of the front circular plate, the outer circle diameter of the front circular plate and the diameter of an inner hole of the pontoon after finish machining form a size of interference fit, and the length between the front circular plate and the rear circular plate is the same as that of a pontoon workpiece.
CN202010003657.9A 2020-01-03 2020-01-03 Finish machining process method for inner cavity of floating drum of liquid floated gyroscope Active CN111112954B (en)

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CN112338792A (en) * 2020-09-25 2021-02-09 天津津航技术物理研究所 Precise grinding and polishing method based on passive laser gyroscope cavity

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Publication number Priority date Publication date Assignee Title
CN112338792A (en) * 2020-09-25 2021-02-09 天津津航技术物理研究所 Precise grinding and polishing method based on passive laser gyroscope cavity
CN112338792B (en) * 2020-09-25 2021-12-21 天津津航技术物理研究所 Precise grinding and polishing method based on passive laser gyroscope cavity

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