CN1307019C

CN1307019C - Lens template super precision lathe structure

Info

Publication number: CN1307019C
Application number: CNB2004100804790A
Authority: CN
Inventors: 李维谦; 许铭生
Original assignee: Tianshui Xinghuo Machine Tool Co Ltd
Current assignee: Tianshui Xinghuo Machine Tool Co Ltd
Priority date: 2004-10-11
Filing date: 2004-10-11
Publication date: 2007-03-28
Anticipated expiration: 2024-10-11
Also published as: CN1586775A

Abstract

The present invention relates to a super-precision lathe structure of a lens template. The shaft line of the main shaft of the present invention is perpendicular to the ground, a main motor drives a working table to horizontally rotate through a driving mechanism, a vacuum chuck is arranged on the working table connected with a left upright post and a right upright post on both sides of the vacuum chuck, cross beams are arranged on the left upright post and the right upright post above the working table, a lathe tool frame is arranged on the cross beam, a tool angular coordinate device is arranged on the lathe tool frame, and a tool is driven to make circumferential arc-shaped reciprocating motion in a vertical plane by an angular coordinate feeding servo motor; one end of the cross beams is provided with a transversal alternating-current servo motor which is connected with the lathe tool frame through a transversal feeding device to horizontally move, and a longitudinal alternating-current servo motor is connected with both ends of the cross beam through a longitudinal feeding device and a longitudinal feeding synchronous mechanism to move up and down. The vertical lathe structure can solve the problem that a main shaft system is deformed by the dead weight of a rotary working table, a vacuum chuck and a lens template when a horizontal lathe is used for chucking so as to ensure the processing quality of parts and the chucking convenience; the present invention lays the foundation for internally ensuring design optimization for manufacturing a high-precision super-fine lathe meeting the requirement of processing a large-size lens template (more than phi2500 millimeters).

Description

Lens template super precision lathe structure

Technical field the present invention relates to the lathe in Machining Technology field, relates in particular to a kind of lens template super precision lathe structure that is used for high precision part processing such as Aero-Space, the large-scale ultraprecise lens template of military project and national defence, missile component and civilian rear projector, radar, large-scale astronomical telescope, copier toner.

Background technology is present, domestic lens template super precision lathe processing maximum can reach 800 millimeters of φ, external lens template super precision lathe maximum can reach 2500 millimeters of φ, the topology layout of these lathes is horizontal, this structural constraint surpass the manufacturing of 2500 millimeters large-scale lens templates of φ, this is to be vertical being installed because the workpiece of horizontal machine tool adopts, when the lens template diameter of need processing is big, the deadweight of rotary table, vacuum cup and lens template very easily causes the distortion of axis system, directly has influence on the machining accuracy of lathe.And vertical structure can solve this difficult problem, break through the manufacturing limit of 2500 millimeters of existing lens template φ, the processing of the part of high accuracy such as the silicon chip of the speculum of using for present generation aircraft, submarine, guided missile, laser fusion, the speculum of large stellar telescope and multifaceted prism, large scale integrated circuit, computer disk provides strong support.

Summary of the invention the object of the present invention is to provide a kind of integral structure layout rationally, the lens template super precision vertical lathe structure easily that is installed, the axis system problem on deformation that can effectively avoid the deadweight of rotary table in the horizontal type structure, vacuum cup and lens template to cause.

For achieving the above object, the technical scheme that the present invention takes is: this lens template super precision lathe structure, its rotary table main-shaft axis is perpendicular to ground, main motor is connected with deceleration device by flexible clutch, drive pulley in the deceleration device is connected with driven pulley by driving belt, driven pulley is connected with main shaft, the main shaft top is a rotary table, rotary table is provided with vacuum cup, the left side of rotary table and its both sides, right column links together, crossbeam is installed in the left side of rotary table top, on the right column, tool holder is contained on the crossbeam, the angular coordinate device is housed on the tool holder, the angular coordinate device is equipped with cutter, cutter is done the circumference arc by angular coordinate feed servo motor-driven and is moved back and forth in vertical plane, crossbeam one end is equipped with the lateral communication servomotor, it is connected with tool holder by cross feed device, realize moving horizontally of tool holder, vertically AC servo motor is connected with the crossbeam two ends with the length feed lazy-tongs by longitudinal feeding device, realizes that the crossbeam two ends move up and down synchronously.

The said lens template super precision lathe structure, being based on this special workpiece of machining large lens template designs, adopt vertical lathe version, in the time of can avoiding that the horizontal lathe structure is vertical to be installed, the axis system problem on deformation that the deadweight of rotary table, vacuum cup and lens template causes, thereby guarantee part processing quality and the convenience that is installed, lay a good foundation for the super precision lathe of making high accuracy, satisfy machining large (φ is more than 2500 millimeters) lens template guarantees the optimization that designs on the whole.

Appended drawings is the lens template super precision lathe structure schematic diagram.

Among the figure: 1-main motor; 2-flexible clutch; 3-deceleration device; 4-drive pulley; 5-driving belt; 6-driven pulley; 7-rotary table main shaft; 8-rotary table; 9-vacuum cup; 10-lens template; 11-left column; 12-right column; 13-crossbeam; 14-tool holder; 15-angular coordinate device; 16-lateral communication servomotor; 17-cross feed device; 18-vertically AC servo motors; 19-longitudinal feeding device; 20-length feed lazy-tongs; 21-cutter; 22-angular coordinate feed servo motor.

Specific embodiment lens template super precision lathe structure provided by the invention, the axis normal of its rotary table main shaft 7 are in ground, so be called vertical.Main motor 1 is connected with deceleration device 3 by flexible clutch 2, and the drive pulley 4 in the deceleration device 3 is connected with driven pulley 6 by driving belt 5, and driven pulley 6 is connected with workbench main shaft 7; The top of rotary table main shaft 7 is provided with rotary table 8, and rotary table 8 is provided with vacuum cup 9, and vacuum cup 9 holds lens template 10, and rotary table 8 is connected in-rises with the left and

right pillar

11,12 of its both sides; Crossbeam 13 is installed on the left and

right pillar

11,12 of rotary table 8 tops, tool holder 14 is contained on the crossbeam 13, angular coordinate device 15 is housed on the tool holder 14, angular coordinate device 15 is equipped with cutter 21, cutter 21 is driven by angular coordinate feed servo motor 22, by from anti-backlash mechanism, can make the cutter 21 on the angular coordinate device 15 in vertical plane, do the reciprocating motion of circumference arc; The left end of crossbeam 13 is equipped with lateral communication servomotor 16, and it is connected with tool holder 14 by cross feed device 17, realizes that the transverse horizontal of tool holder 14 moves; Vertically AC servo motor 18 is connected with the two ends of length feed lazy-tongs 20 with crossbeam 13 by longitudinal feeding device 19, realizes that two ends, crossbeam 13 left and right sides move up and down synchronously.

In specific process, at first to be adsorbed on lens template to be processed 10 horizontal on the vacuum cup 9 of rotary table 8, can avoid like this because vertical clamping adds man-hour, the problem on deformation of the axis system that the deadweight of rotary table 8, vacuum cup 9 and lens template 10 causes.Main motor 1 is by flexible clutch 2, deceleration device 3, drive pulley 4, driving belt 5, driven pulley 6, main shaft 7 drives rotary table 8 and horizontally rotates, by cross feed device 17 tool holder 14 is moved horizontally to the corresponding position by the lateral communication servomotor 16 that is installed on the crossbeam 13, servo longitudinal motor 18 drives crossbeam 13 by longitudinal feeding device 19 and moves up and down, make the cutter 21 on the tool holder 14 aim at the relevant position that lens template 10 need be processed on the rotary table 8, rotary table 8 horizontally rotates in the process of motion, and lens template 10 obtains processing on demand.In the above-mentioned course of action, vertically synchro-feed mechanism 20 solves the crawling problems that crossbeams 13 move up and down, guarantee crossbeam 13 about 11,12 operations of two columns synchronously; Angular coordinate feed servo motor mechanism solves the angle problem of cutter 21 and lens template 10 contact-making surfaces, and assurance cutter 21 is processed by required angle.

In manufacturing and designing in the process of this lens template super precision vertical structure lathe, still need and to solve following problem: 1. solve vibration problem, the periphery that comes from lathe such as vibration source, specially treated is carried out on the basis of installing, avoid external vibration source, also need to solve vibration and driving member the vibration in transmission process etc. of power output element in the lathe running in addition.2. solve the spindle rotation accuracy problem, adopt the mode of advanced main shaft supporting, improve the rigidity and the rotating accuracy of main shaft.3. solve the lathe crossbeam in running, the asynchronous problem that on left and right column, moves up and down.When 4. solving knife rest and on crossbeam, moving, because the support stiffness problem of the big driving member that will overcome of span.5. by the interference surface of advanced angular coordinate device solves lens template and the processing problems of working face.6. it is not open to solve existing such machine tool control system, function singleness, restrict the problem of new function development, now new lens template lathe control system is on original basis, increase a workbench of giving full play to people's intelligence and wisdom, can carry out Software Secondary Development for the user, make equipment can bring into play bigger effect, satisfy the different demands of different user.

Need to prove: the total arrangement of lens template super precision lathe is to have problem of overall importance in the Machine Tool design, and its quality all has very big influence to the manufacturing and the use of lathe.Along with production requirement and science and technology development, the further further investigation along with lens template super precision vertical structure lathe provided by the invention also can constantly improve to some extent.

Claims

1, a kind of lens template super precision lathe structure, it is characterized in that: the axis normal of its rotary table main shaft (7) is in ground, main motor (1) is connected with deceleration device (3) by flexible clutch (2), drive pulley (4) in the deceleration device (3) is connected with driven pulley (6) by driving belt (5), driven pulley (6) is connected with rotary table main shaft (7), the top of rotary table main shaft (7) is provided with workbench (8), rotary table (8) is provided with vacuum cup (9), the left side of rotary table (8) and its both sides, right column (11,12) link together, crossbeam (13) is installed in the left side of rotary table (8) top, right column (11,12) on, tool holder (14) is contained on the crossbeam (13), angular coordinate device (15) is housed on the tool holder (14), angular coordinate device (15) is equipped with cutter (21), cutter (21) is driven by angular coordinate feed servo motor (22), one end of crossbeam (13) is equipped with lateral communication servomotor (16), it is connected with tool holder (14) by cross feed device (17), and vertically AC servo motor (18) is connected with crossbeam (13) two ends with length feed lazy-tongs (20) by longitudinal feeding device (19).