CN103878645A - Ram overhanging deformation compensation device and method - Google Patents
Ram overhanging deformation compensation device and method Download PDFInfo
- Publication number
- CN103878645A CN103878645A CN201210562935.XA CN201210562935A CN103878645A CN 103878645 A CN103878645 A CN 103878645A CN 201210562935 A CN201210562935 A CN 201210562935A CN 103878645 A CN103878645 A CN 103878645A
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- saddle
- ram
- hole
- rectangular
- column
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- 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
- B23Q23/00—Arrangements for compensating for irregularities or wear, e.g. of ways, of setting mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
Abstract
The invention belongs to the technical field of error compensation for large numerical control machine tools or large friction stir welding equipment, and particularly relates to a ram overhanging deformation compensation device and method. The device comprises a saddle, a ram, a column, a force sensor and center-of-mass regulating mechanisms. The column is provided with a rectangular through hole I in the vertical direction. The saddle is disposed in the rectangular through hole I of the column and slidably connected with the front end of the column and the inner wall of the rectangular through hole I in the vertical direction. The saddle is provided with a rectangular through hole II in the length-wise direction. The ram is inserted into the rectangular through hole II of the saddle and slidably connected with the saddle in the horizontal direction. The saddle moves in the rectangular through hole I of the column in the vertical direction, and the ram extends or retracts in the rectangular through hole II of the saddle. One side or two sides of the saddle are provided with the center-of-mass regulating mechanisms; the force sensor is disposed at the sliding connection of the saddle with the front end of the column. The ram overhanging deformation compensation device has the advantages that compensation torque is large, compensation effect is good, precision is high, response speed is high, and dynamic performance is good.
Description
Technical field
The invention belongs to the Error Compensation Technology field of large-size numerical control machine or large-scale agitating friction soldering equipment, specifically a kind of overhang deflection compensation device and method of ram, is applicable to the large-scale agitating friction soldering equipment of large-size horizontal digital-control boring-milling machine and structural similarity.
Background technology
Along with China's aerospace, manufacturing development, the large-scale agitating friction soldering equipment application of large-size horizontal digital-control boring-milling machine and structural similarity is more and more extensive.But its precision remain restriction its development key factor, wherein ram overhang distortion very large on the impact of its precision, be still at present insoluble technical problem.The ram distortion that overhangs refers at ram front end and stretching out after saddle, and the reach of ram barycenter makes ram front end downward-sloping.This distortion is that end executing means has departed from default position, thereby has produced processing or welding error.Current compensation method is mainly barycenter compensation, ram compensation, the hydraulic pressure moment of flexure penalty method etc. deformation-compensated, that be out of shape by ram and the generation of saddle entirety gravity center shift of moving component.Although existing compensation method has all compensated the distortion that overhangs of part ram to some extent, and obtained some effects, but its weak point is ram stretch out after, the distortion that compensation ram gravity center shift produces, its active force all acts on saddle, and the end error that the distortion of saddle causes does not compensate.But also cause the move up and down stressed serious inequality of guide rail of saddle, and way rub is increased, reduce guide rail service life.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of ram overhang deflection compensation device and method.This apparatus structure is simple, compact, is easy to install, reliable and practical, and compensation moment of flexure is large, and compensation effect is good, can meet the requirement of strength and stiffness.
The object of the invention is to be achieved through the following technical solutions:
A kind of ram deflection compensation device that overhangs, comprise saddle, ram, column, power sensor and centroid adjustment mechanism, on its central post, vertically offer rectangular through-hole I, described saddle is arranged in the rectangular through-hole I of column, and be vertically slidably connected with the front end of column and the inwall of rectangular through-hole I, on described saddle, be provided with along its length rectangular through-hole II, described ram is inserted in the rectangular through-hole II of saddle, and be slidably connected with saddle along continuous straight runs, described saddle is vertical direction motion in the rectangular through-hole I of column, described ram stretches out or retracts in the rectangular through-hole II of saddle, the one or both sides of described saddle are provided with centroid adjustment mechanism, and the front end place of being slidably connected of saddle and column is provided with power sensor, and the distortion after by described centroid adjustment mechanism, ram being overhang compensates.
Described centroid adjustment mechanism comprises supporting box and is arranged at the motor in supporting box, hinge support, lift Connection Block, bearing pin, torsional axis, lever arm, spiral lift and spherical linkage, wherein torsional axis is installed on the sidewall of saddle, one end and the torsional axis of supporting box are rotationally connected, the cylindrical end of lever arm is sleeved on torsional axis, and be connected with torsional axis, the other end of lever arm is connected with spherical linkage by bearing pin, described spherical linkage upper end is connected with spiral lift, described motor is arranged on a side of spiral lift, described spiral lift top is provided with lift Connection Block, the both sides of described lift Connection Block are separately installed with the hinge support for support helix lift, described hinge support is connected with the both sides of supporting box, the rectangular through-hole I inwall of one end of described supporting box and column is slidably connected.
Rectangular through-hole I on described column is vertically arranged with auxiliary guide rail with the relative two sides that saddle connects, on described supporting box, be vertically provided with boss, this boss is provided with two auxiliary sliders, and described auxiliary slider and auxiliary guide rail form sliding pair.
The both sides, one end of described supporting box offer bearing mounting base hole, described torsional axis is rotationally connected at the bearing mounting base hole place of supporting box both sides respectively by clutch shaft bearing and the second bearing, between the cylindrical end of lever arm and clutch shaft bearing and the second bearing, be respectively equipped with sleeve and back-up ring, the outside of described back-up ring is provided with bearing baffle, and supporting box open side is installed cover plate.Described lever arm and torsional axis spline joint.Described torsional axis is affixed by the side of screw and saddle.
The both sides of described column front end rectangular through-hole I are separately installed with main guide rail, and the both sides of the rectangle end face of described saddle are respectively equipped with groove, are provided with described power sensor in this groove, and described power covers disposed on sensor has the master slider that forms moving sets with main guide rail.
A kind of ram deformation-compensated method that overhangs, detect the moment of flexure producing after ram overhangs by power sensor, described power sensor inputs to the numerical value detecting in control system, control system output order is to centroid adjustment mechanism, and the distortion after by centroid adjustment mechanism, ram being overhang compensates.
Motor in described centroid adjustment mechanism receives the instruction of control system and drives spiral lift work, described spiral lift promotes lever arm, lever arm drives torsional axis rotation, and described torsional axis drives saddle to reverse, and realizes the compensation of distortion after ram is overhang.
Advantage of the present invention and good effect are:
1. the present invention is simple in structure, compact, is easy to install, reliable and practical, and compensation moment of flexure is large, and compensation effect is good, can meet the requirement of strength and stiffness.
2. the present invention compensates that real-time is good, compensation precision is high.The present invention adopts the detection of power sensor, motor closed-loop control, and compensation precision is high, and its system response time is fast simultaneously, and dynamic property is good.
3. dynamical system of the present invention adopts electric driving, has avoided the use of conventional hydraulic, has some superiority in Aero-Space manufacture field.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention;
Fig. 2 is column internal structure schematic diagram of the present invention;
Fig. 3 is the structural representation of centroid adjustment of the present invention mechanism;
Fig. 4 is the top view of centroid adjustment of the present invention mechanism;
Fig. 5 is the axonometric drawing that waits of centroid adjustment of the present invention mechanism;
Fig. 6 is the structural representation of torsional axis of the present invention;
Fig. 7 is the structural representation of lever arm of the present invention.
Wherein: 1 is saddle, 2 is screw, and 3 is ram, and 4 take rail as the leading factor, 5 is column, and 6 is power sensor, and 7 is master slider, and 8 is auxiliary slider, 9 is auxiliary guide rail, and 10 is motor, and 11 is cover plate, and 12 is hinge support, 13 is lift Connection Block, and 14 is bearing pin, and 15 is bearing baffle, and 16 is torsional axis, 17 is sleeve, and 18 is back-up ring, and 19 is clutch shaft bearing, and 20 is the second bearing, 21 is supporting box, and 22 is lever arm, and 23 is spiral lift, and 24 is spherical linkage.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Fig. 1～7, the present invention includes saddle 1, ram 3, column 5, power sensor 6 and centroid adjustment mechanism, on its central post 5, vertically offer rectangular through-hole I, inside this rectangular through-hole I, on relative two sides, be vertically arranged with boss, auxiliary guide rail 9 is installed on boss, and on the front end face of column 5, the both sides of rectangular through-hole I are vertically arranged with main guide rail 4.Saddle 1 is T-shaped, and the both sides of wider one end vertically offer groove, and strong sensor 6 is set in this groove, and power sensor 6 is provided with the master slider 7 that forms moving sets with main guide rail 4.The one or both sides of saddle 1 are provided with centroid adjustment mechanism, are vertically provided with auxiliary slider 8 in centroid adjustment mechanism.Saddle 1 be arranged in the rectangular through-hole I of column 5 and by master slider 7 and auxiliary slider 8 respectively with column 5 on main guide rail 4 and auxiliary guide rail 9 be slidably connected.On saddle 1, be provided with along its length rectangular through-hole II, ram 3 is inserted in the rectangular through-hole II of saddle 1 and is slidably connected with saddle 1 along continuous straight runs, and ram 3 stretches out or retracts in the rectangular through-hole II of saddle 1.
Described centroid adjustment mechanism comprises supporting box 21 and is arranged at motor 10, cover plate 11, hinge support 12, lift Connection Block 13, bearing pin 14, bearing baffle 15 torsional axis 16, sleeve 17, back-up ring 18, clutch shaft bearing 19, the second bearing 20, lever arm 22, spiral lift 23 and the spherical linkage 24 in supporting box 21, wherein torsional axis 16 is affixed with the side of saddle 1 by screw 2, the cylindrical end of lever arm 22 be sleeved on torsional axis 16 and with torsional axis 16 spline joints.The cylindrical end of lever arm 22 is equipped with sleeve 17, clutch shaft bearing 19 near a side of saddle 1, and opposite side is equipped with back-up ring 18, the second bearing 20 and bearing baffle 15.The other end of lever arm 22 is connected with spherical linkage 24 by bearing pin 14, spherical linkage 24 upper ends are connected with spiral lift 23, motor 10 is arranged on a side of spiral lift 23, spiral lift 23 tops are provided with lift Connection Block 13, the both sides of lift Connection Block 13 are separately installed with for 12, two hinge support 12 of hinge support of support helix lift 23 and are connected with the both sides of supporting box 21 respectively.
Described supporting box 21 both sides have bearing mounting base hole, and clutch shaft bearing 19 and the second bearing 20 are installed on respectively the bearing mounting base hole place of supporting box 21 both sides, and supporting box 21 open side are installed cover plate 11.Auxiliary slider 8 is arranged on supporting box 21.
The installation process of centroid adjustment mechanism is:
Operation principle of the present invention is:
Ram 3 stretches out, the gravity motion of ram 3, produce moment of flexure, this moment of flexure is delivered to main guide rail 4 through saddle 1, then the power sensor 6 under main guide rail 4 reaches on column 5, and the measured value of the sensor 6 of exerting all one's strength increases, and power sensor 6 measured values are inputed in control system, calculate by analysis output simulation controlled quentity controlled variable.By in the driver of simulation controlled quentity controlled variable input motor 10, control the level of torque of motor 10.Motor 10 drives spiral lift 23 to rotatablely move and is converted into rectilinear motion, the leading screw of spiral lift 23 stretches out, promote lever arm 22, lever arm 22 drives torsional axis 16 to rotate, torsional axis 16 connects together with saddle 1, make saddle 1 reverse a minute angle, thereby end deflection is reduced.Now, the pressure of the main guide rail 4 below power sensors 6 that support saddle 1 moves reduces, and in the time that power sensor 6 returns to initial alignment value, control system sends torque keeping instructions to motor 10 drivers, until the measured value of power sensor 6 again increases or reduces.This compensating torque is started by saddle 1, through torsional axis 16-lever arm 22-spiral lift 23-supporting box 21-auxiliary guide rail 9, is finally delivered on column 5.
Claims (9)
1. the ram deflection compensation device that overhangs, it is characterized in that: comprise saddle (1), ram (3), column (5), power sensor (6) and centroid adjustment mechanism, its central post vertically offers rectangular through-hole I on (5), described saddle (1) is arranged in the rectangular through-hole I of column (5), and be vertically slidably connected with the front end of column (5) and the inwall of rectangular through-hole I, described saddle is provided with rectangular through-hole II on (1) along its length, described ram (3) is inserted in the rectangular through-hole II of saddle (1), and be slidably connected with saddle (1) along continuous straight runs, described saddle (1) is vertical direction motion in the rectangular through-hole I of column (5), described ram (3) stretches out or retracts in the rectangular through-hole II of saddle (1), the one or both sides of described saddle (1) are provided with centroid adjustment mechanism, the front end place of being slidably connected of saddle (1) and column (5) is provided with power sensor (6), and the distortion after by described centroid adjustment mechanism, ram (3) being overhang compensates.
2. by the deflection compensation device that overhangs of the ram described in claims 1, it is characterized in that: described centroid adjustment mechanism comprises supporting box (21) and is arranged at the motor (10) in supporting box (21), hinge support (12), lift Connection Block (13), bearing pin (14), torsional axis (16), lever arm (22), spiral lift (23) and spherical linkage (24), wherein torsional axis (16) is installed on the sidewall of saddle (1), one end of supporting box (21) and torsional axis (16) are rotationally connected, the cylindrical end of lever arm (22) is sleeved on torsional axis (16), and be connected with torsional axis (16), the other end of lever arm (22) is connected with spherical linkage (24) by bearing pin (14), described spherical linkage (24) upper end is connected with spiral lift (23), described motor (10) is arranged on a side of spiral lift (23), described spiral lift (23) top is provided with lift Connection Block (13), the both sides of described lift Connection Block (13) are separately installed with the hinge support (12) for support helix lift (23), described hinge support (12) is connected with the both sides of supporting box (21), the rectangular through-hole I inwall of one end of described supporting box (21) and column (5) is slidably connected.
3. by the deflection compensation device that overhangs of the ram described in claims 2, it is characterized in that: the rectangular through-hole I on described column (5) is vertically arranged with auxiliary guide rail (9) with the relative two sides that saddle (1) connects, described supporting box is vertically provided with boss on (21), this boss is provided with two auxiliary sliders (8), and described auxiliary slider (8) and auxiliary guide rail (9) form sliding pair.
4. by the deflection compensation device that overhangs of ram described in claim 2, it is characterized in that: the both sides, one end of described supporting box (21) offer bearing mounting base hole, described torsional axis (16) is rotationally connected at the bearing mounting base hole place of supporting box (21) both sides respectively by clutch shaft bearing (19) and the second bearing (20), between the cylindrical end of lever arm (22) and clutch shaft bearing (19) and the second bearing (20), be respectively equipped with sleeve (17) and back-up ring (18), the outside of described back-up ring (18) is provided with bearing baffle (15), supporting box (21) open side is installed cover plate (11).
5. by the deflection compensation device that overhangs of ram described in claim 2, it is characterized in that: described lever arm (22) and torsional axis (16) spline joint.
6. by the deflection compensation device that overhangs of ram described in claim 2, it is characterized in that: described torsional axis (16) is affixed with the side of saddle (1) by screw (2).
7. by the deflection compensation device that overhangs of the ram described in claims 1, it is characterized in that: the both sides of described column (5) front end rectangular through-hole I are separately installed with main guide rail (4), the both sides of the rectangle end face of described saddle (1) are respectively equipped with groove, in this groove, be provided with described power sensor (6), described power sensor (6) is provided with the master slider (7) that forms moving sets with main guide rail (4).
8. one kind is utilized described in claim 1-7 any one device to carry out the ram deformation-compensated method that overhangs, it is characterized in that: detect the moment of flexure producing after ram (3) overhangs by power sensor (6), described power sensor (6) inputs to the numerical value detecting in control system, control system output order is to centroid adjustment mechanism, and the distortion after by centroid adjustment mechanism, ram (3) being overhang compensates.
9. by method claimed in claim 8, it is characterized in that: the motor (10) in described centroid adjustment mechanism receives the instruction of control system and drives spiral lift (23) work, described spiral lift (23) promotes lever arm (22), lever arm (22) drives torsional axis (16) rotation, described torsional axis (16) drives saddle (1) to reverse, and realizes the compensation of distortion after ram (3) is overhang.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210562935.XA CN103878645B (en) | 2012-12-20 | 2012-12-20 | A kind of ram overhanging deflection compensation device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210562935.XA CN103878645B (en) | 2012-12-20 | 2012-12-20 | A kind of ram overhanging deflection compensation device and method |
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| CN103878645A true CN103878645A (en) | 2014-06-25 |
| CN103878645B CN103878645B (en) | 2016-03-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017158061A1 (en) | 2016-03-17 | 2017-09-21 | Hpt Sinergy S.R.L. | Cartesian machine tool with horizontal slide and cantilevered machining head, and slide carriage for such machine tool |
| CN111546133A (en) * | 2015-03-17 | 2020-08-18 | 东芝机械株式会社 | Machine tool |
| CN112146910A (en) * | 2020-09-27 | 2020-12-29 | 清华大学 | Simulation device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUA20161753A1 (en) * | 2016-03-17 | 2017-09-17 | Hpt Sinergy Srl | CARTESIAN MACHINE MACHINE PERFECTED WITH HORIZONTAL SLIDE AND WORKING HEAD WITH OVERHANG, AND SLIDING CARRIAGE FOR THIS MACHINE TOOL |
| ITUA20161749A1 (en) * | 2016-03-17 | 2017-09-17 | Hpt Sinergy Srl | CARTESIAN TOOL MACHINE WITH HORIZONTAL SLIDE AND WORKING HEAD WITH OVERHANG, AND SLIDING CARRIAGE FOR THIS MACHINE TOOL |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111546133A (en) * | 2015-03-17 | 2020-08-18 | 东芝机械株式会社 | Machine tool |
| CN111546133B (en) * | 2015-03-17 | 2022-02-11 | 芝浦机械株式会社 | Machine tool |
| WO2017158061A1 (en) | 2016-03-17 | 2017-09-21 | Hpt Sinergy S.R.L. | Cartesian machine tool with horizontal slide and cantilevered machining head, and slide carriage for such machine tool |
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| CN112146910A (en) * | 2020-09-27 | 2020-12-29 | 清华大学 | Simulation device |
| CN112146910B (en) * | 2020-09-27 | 2021-08-10 | 清华大学 | Simulation device |
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