学士学位论文
Reconfigurable manufacture system is to list as one of key technologies which will first solve in the future manufacturing , this article will mainly solve research on theory of reconfigurable for NC machine tool. Reconfigurable machine tool has many merits that include modularizeation, integration, custom-made, convertibility and so on. That is the traditional machine Tool cannot compare. This article has carried on the analysis from the deep hole components classification and the formed movement craft two aspects to the deep hole components race. The reconfigurable deep hole machine tool was to carry on the modular design based two aspects for the module partition and reconstructable analyze, solved the key technologies the machine tool modulation design. From the machine tool bed module, the head of machine tool module, the cutting tool auxiliary system and the numerical control system four aspects, to design and research on reconfigurable machine tool, solved the difficult design problem which the part reconfigurable designed. Finally uses the ultrasonic wave examination technology, has realized numerical control machine tool element level restructuring.
1 Introduction
The research and the development of reconfigurable machine tool is to realize reconfigurable manufacture system and the agile manufacture has the decisive significance. Reconfigurable Machine Tools: Namely in order to satisfy in a specific components race the components cannot forecast the demand in the design and the craft, through change machine Tool module structure or integrates the new technology, by lowest cost transformation machine tool own function, causes the machine tool at in entire life cycle certain specific cycles, completes machine Tool which a series of specific processing characteristic race processes. Reconfigurable machine Tool to have the modulation, compositive, custom-made, the convertibility and diagnostic and so on merits [1,2]. This characteristics is cannot compare for the traditional machine Tool.
2 Deep components race analyse
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学士学位论文
The deep hole machine Tool reconfigurable take the processes object and the finishing tool as a breakthrough point, analyzes the deep hole components race and the finishing tool has determined the deep hole machine Tool various functions module the division, after restructures the function redundancy to be smallest analyzes the deep hole machine Tool reconstructable.
(1) Deep components classification
The deep hole components may divide into according to the structure characteristic: gyroidal deep hole components and nongyroidal deep hole components. The deep hole components may divide into according to the hole size: Special minor diameter deep hole components, minor diameter deep hole components, middle diameter deep hole components, large diameter deep hole components and ultra large diameter deep hole components.
The deep hole components may divide into according to the precision class: exact level, ordinary exact level, general exact level. The components request precision class with the finishing tool close correlation which uses.
(2)Deep components processing formed movement craft analysis[3]
The deep hole components processing according to the deep hole to locate the position and the components other structure characteristic decided. Existing the deep hole drill movement form has the following kinds:
1) Work piece revolving, the cutting tool makes the feed motion, such as is on the shaft lever class components rotation spool thread the deep hole processing;
2) The work piece is motionless, cutting tool revolving makes the feed motion, such as processes the deep hole on the hot plate;
3) Work piece revolving, cutting tool revolving and makes the feed motion, like tubing drill hole.
3 The function modulation design of Reconfigurable numerical control deep hole processing machine Tool structure
3.1 Modular divisions
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学士学位论文
According to the request which might restructure carries on the modular division to the deep hole machine Tool, according to its itself characteristic, according to the functional analysis method, might divide into the machine ool following function module: Lathe bed, lathe-hedd, ydraulic system, k finishing tool system, numerical control system. Each module may continue to divide the function module[4,5,6].
3.2 Structure feasible plan and reconfigurable analysis
According to the deep hole components race in the work piece the size, the complex degree and the processing craft carries on restructuring. (1) Workpiece size change
Through change the linear movement module or changes the lathe bed length to satisfy the request.
(2) Workpiece geometry complexity change
For example gyroidal deep hole components change to nongyroidal deep hole components rotates, may adapt through the change machine Tool movement pattern, such as the machine Tool by original main axle revolving, the cutting tool straight line to feed changes the work piece to be motionless, the cutting tool on the one hand to feed on the other hand revolves. (3) Workpiece processing craft change
Through change the cutting tool and the processing equipment. For example choose butts, BTA drills, spurts attracts drills, SIED drills or the boring cutter so on and necessary auxiliary tools.
4 The reconfigurable numerical control deep hole machine Tool part design and study
4.1 The reconfigurable numerical control deep hole machine Tool module design and study
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学士学位论文
The traditional numerical control deep hole machine Tool is very difficult to realize the XYZ three axles linkage, but realizes the three axle linkage structure quite to be complex, its function redundancy relative many, this article studied one kind to be possible the simple realization XYZ traverse to be possible to restructure the numerical control deep hole machine Tool in certain scope (to see Figure 1)
Figure 1: The 3D graph of reconfigurable NC machine tool
Figure 2: The 3D graph of machine tool structure
(1) Lathe bed module
The lathe bed module includes the lathe bed, the guide screw and the power section and so on. This article designs the lathe bed uses the horizontal-type lathe bed, and is different with the traditional lathe bed, uses the headstock and the lathe bed separates the structure, and is equipped with the guide rail, has the ball bearing guide screw, this design is for satisfies the lathe-hedd to be possible the relative lathe bed in the Y direction migration(Figure 2). The lathe-hedd guide rail, the ball bearing guide screw and the headstock coordination, and is equipped with the independent dynamic system and the inching organization, uses the frequency conversion velocity modulation electromotor.
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学士学位论文
Figure 3: The graph of lathe-hedd
（a）
（b）
Figure 4: The graph of complex workpiece machining
(2) Lathe-hedd
The lathe-hedd module mainly is aims at the headstock to carry on the design (Figure 3). The power section uses the frequency conversion velocity modulation electromotor, through
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