CN-116967795-B - Square frame type face milling machine

CN116967795BCN 116967795 BCN116967795 BCN 116967795BCN-116967795-B

Abstract

The invention relates to a square frame type face milling machine, which comprises a bracket, a main body frame, a fixed pressing device, a face milling executing mechanism and a leveling mechanism, wherein the fixed pressing device and the face milling executing mechanism are arranged on the main body frame, the leveling mechanism is arranged on a pitching adjusting mechanism and a pair of heading adjusting mechanisms, each heading adjusting mechanism comprises a heading driving mechanism and a slidable supporting seat, and the main body frame is rotatably arranged on the slidable supporting seat along the heading direction through a central rotating shaft on the left side and the right side of the main body frame, so that the heading position of the main body frame can be adjusted through driving of the heading driving mechanism on the slidable supporting seat. The invention enables the main body frame to adjust the pitching position by taking the pair of central rotating shafts as rotating shafts under the drive of the pitching adjusting mechanism, and also can adjust the heading position by taking the central rotating shaft on one side as a datum point under the drive of the heading driving mechanism on the other side, or the heading driving mechanisms on two sides are simultaneously driven in the same or opposite directions so as to quickly realize the adjustment of the heading position of the main body frame.

Inventors

LI SHENGQING

Assignees

苏州复玖机械科技有限公司

Dates

Publication Date: 20260505
Application Date: 20230907

Claims (15)

1. The square frame type face milling machine is characterized by comprising a bracket provided with a pair of brackets, a square frame-shaped main body frame, a fixed pressing device for fixing a wind power blade, a face milling actuating mechanism for milling the end face of the wind power blade, and a leveling mechanism for adjusting the main body frame to be aligned with the end face of the wind power blade, wherein the fixed pressing device and the face milling actuating mechanism are arranged on the main body frame, the leveling mechanism is arranged between the main body frame and the bracket, and comprises a pitching adjusting mechanism which is arranged on the bracket and is in driving connection with one side of the bottom of the main body frame, and a pair of heading adjusting mechanisms which are correspondingly arranged on the pair of brackets, wherein each heading adjusting mechanism comprises a heading driving mechanism and a slidable supporting seat, and the main body frame is rotatably arranged on the slidable supporting seat on the left side and the right side of the main body frame along the heading direction through a central rotating shaft so that the heading position of the main body frame can be adjusted through driving of the heading driving mechanism on the slidable supporting seat.
2. The square face milling machine of claim 1, wherein the pitch adjustment mechanism comprises a pitch drive mechanism and a fisheye bearing device, wherein the pitch drive mechanism is a pitch servo cylinder, the fisheye bearing device comprises a fisheye bearing drivingly connected to the pitch servo cylinder and a fixed support base fixedly mounted on the bottom side of the main body frame, the fisheye bearing rotatably mounted on the fixed support base by a cylinder pin.
3. The square face milling machine of claim 2, wherein the bracket comprises a bracket base and the pair of brackets, the pair of heading adjustment mechanisms are symmetrically arranged on the left and right along the heading direction, the heading driving mechanism is fixedly arranged on the brackets, and the slidable supporting seat is slidably arranged on the brackets.
4. The block face milling machine of claim 1 wherein the slidable support comprises a slidable mounting plate and a ball-seated vertical bearing mount secured to the slidable mounting plate, wherein the slidable mounting plate is slidably mounted to the bracket by means of cooperating slide blocks and rail structures, the ball-seated vertical bearing mount being in clearance fit with the central spindle.
5. The block face milling machine of claim 4 wherein the central spindle is mounted in the ball-seated vertical bearing seat via a bearing sleeve clearance fit, the ball-seated vertical bearing seat comprising a spherical bearing.
6. The block mill of claim 5 wherein the heading drive mechanism is a heading servo cylinder mounted to the support by means of a fixed mount and drivingly connected to the slidable mounting plate.
7. The block-type face milling machine of claim 1, wherein the face milling actuator comprises: the X-axis transverse moving assembly comprises a vertical beam assembly and an X-axis driving mechanism, wherein the upper end and the lower end of the vertical beam assembly are movably and correspondingly connected to the upper beam and the lower beam of the main body frame, and the X-axis driving mechanism is arranged on the vertical beam assembly and can drive the vertical beam assembly to transversely move along the X-axis direction on the upper beam and the lower beam; the Z-axis moving mechanism is arranged on the vertical beam assembly and can move up and down along the Z-axis direction; And a Y-axis feeding mechanism fixedly mounted on the Z-axis moving mechanism and provided with a milling head thereon, wherein the Y-axis feeding mechanism is arranged to drive the milling head to feed along the Y-axis direction.
8. The block face milling machine of claim 7 wherein the vertical beam assembly comprises an upper mounting plate, a lower mounting plate, and a vertical beam connecting the upper and lower mounting plates, the upper and lower mounting plates being correspondingly connected to the upper and lower cross beams via slide blocks and slide rail structures, respectively.
9. The square frame type face milling machine of claim 8, wherein the X-axis driving mechanism is mounted on one side of the vertical beam and includes an X-axis servo motor and an X-axis transmission mechanism, wherein the X-axis transmission mechanism includes upper and lower transmission rods, upper and lower steerer gears, upper and lower gears, and upper and lower racks, wherein the X-axis servo motor is respectively driven at upper and lower ends of an output shaft thereof via longitudinal couplings to connect inner ends of the upper and lower transmission rods, outer ends of the upper and lower transmission rods are respectively connected to one ends of the upper and lower steerer gears via longitudinal couplings, the other ends of the upper and lower steerer gears are respectively driven via transverse couplings to connect the upper and lower gears, and the upper and lower racks are respectively mounted on the upper and lower cross beams and adapted to be respectively engaged with the upper and lower gears so that the X-axis servo motor drives the vertical beam assembly to move laterally in the X-axis direction via the X-axis transmission mechanism.
10. The square frame type face milling machine of claim 9, wherein the X-axis servo motor, the upper steering gear and the lower steering gear are fixedly arranged on the left side of the vertical beam on one side, the sliding blocks and the sliding rail structures comprise guiding sliding blocks arranged on the upper mounting plate and the lower mounting plate and guiding sliding rails arranged on the upper cross beam and the lower cross beam, and the upper cross beam and the lower cross beam are respectively provided with an upper dust cover and a lower dust cover which extend along the X-axis direction and are in an upside-down L shape, and the sliding blocks and the sliding rail structures are positioned on the inner sides of the upper dust cover and the lower dust cover.
11. The square face milling machine of claim 8, wherein the Z-axis moving mechanism includes a Z-axis mount in the form of an upside-down L, a Z-axis servo motor movably mounted on the right side of the vertical beam at the right side thereof via a slider and rail structure, and a gear and rack structure including a Z-axis gear drivingly connected to an output shaft of the Z-axis servo motor and a Z-axis rack fixedly mounted on the front side of the vertical beam, the Z-axis rack extending in a Z-axis direction and adapted to engage the Z-axis gear so that the Z-axis moving mechanism can move up and down in the Z-axis direction on the vertical beam upon actuation of the Z-axis servo motor.
12. The square frame type face milling machine of claim 11, wherein the Y-axis feeding mechanism comprises a Y-axis fixing seat, a Y-axis servo motor, a screw nut structure, a sliding block and a sliding rail structure, wherein the Y-axis fixing seat is fixedly arranged on one side, far away from the vertical beam, of the right side part of the Z-axis mounting seat, the Y-axis servo motor is arranged on the Y-axis fixing seat, the screw nut structure comprises a Y-axis screw rod in driving connection with the Y-axis servo motor and a Y-axis nut meshed with the Y-axis screw rod, the sliding block and the sliding rail structure comprise a Y-axis sliding rail arranged on the Y-axis fixing seat and a Y-axis sliding block in sliding fit with the Y-axis sliding rail, and the Y-axis nut and the Y-axis sliding block are fixedly arranged on the milling head so that the milling head can feed along a Y-axis direction under the driving of the Y-axis servo motor.
13. The square-frame face milling machine according to any one of claims 1 to 12, further comprising a synchronous jacking device mounted on the bottom of the bracket, the synchronous jacking device comprising a driving mechanism, a transmission mechanism and two pairs of worm wheel lifters, wherein the driving mechanism comprises a motor and a speed reducer, the transmission mechanism comprises a longitudinal transmission shaft, a pair of T-shaped corner pieces and two pairs of transverse transmission shafts, the pair of T-shaped corner pieces are symmetrically arranged on the front and rear sides of the speed reducer, the speed reducer is respectively connected with the pair of T-shaped corner pieces in a driving manner at two ends through the longitudinal transmission shaft, each T-shaped corner piece is connected with the pair of worm wheel lifters through the pair of transverse transmission shafts, and the pair of worm wheel lifters are symmetrically arranged on the left and right sides of the T-shaped corner pieces, so that the motor can drive the worm wheel lifters through the speed reducer, the longitudinal transmission shaft, the T-shaped corner pieces and the transverse transmission shafts to realize lifting of the square-frame face milling machine.
14. The block mill of claim 13 wherein the longitudinal drive shafts are connected at both ends thereof to the T-turn via longitudinal couplings, and each of the transverse drive shafts is connected at one end to the T-turn via a transverse coupling and at the other end to the worm gear elevator via a transverse coupling.
15. The block face milling machine of claim 14 further comprising a controller electrically connected to at least the face milling actuator, the leveling mechanism and the synchronized jacking device.

Description

Square frame type face milling machine Technical Field The invention relates to the technical field of wind power blade face milling machines, in particular to a square frame type face milling machine. Background Wind turbines generally consist of a tower, wind turbine blades on the tower, a hub, a nacelle, a drive train within the nacelle, a control system, a generator, etc. The wind driven generator blade and the hub are generally connected into a whole through threads, so that an embedded part, namely a bolt, is arranged at the root end of the blade in the blade manufacturing process. Before the blade is connected with the hub, the root end of the blade, namely the end face of the root of the blade, needs to ensure certain precision, namely the whole end face and the embedded part need to achieve uniform precision, and the flatness of the embedded part generally meets the specified requirement through a milling processing mode. However, because the diameter of the root end of the blade is larger, especially for a high-power wind driven generator, the diameter of the joint surface of the root of the blade and the hub which are in threaded connection reaches more than two meters (even the height of two floors), which increases the difficulty of positioning and processing the end surface of the root end of the blade. Due to the limitation of the blade shape, the conventional end milling machine cannot be used for finishing. A square frame type face milling machine is known, namely, a square frame type face milling machine is disclosed, the outer peripheral surface of a blade is fixedly clamped from the outside through a square frame of the square frame type face milling machine, namely, a fixed clamping device is arranged on each corner of a main body frame, and a milling head is driven through a triaxial linkage device arranged on the square frame to finish milling of studs on the end face of the blade root. However, the existing square-frame face milling machine is mostly used in a fixed mode, and a workpiece frame of a wind power blade is also in a fixed mode, so that the problem of inaccurate alignment of the face milling machine and the end face of the blade is caused, and therefore, the blade needs to be moved to be suitable for milling in many times. In practice, however, the movement of the blades is rather time-consuming, laborious and dangerous. In addition, in the existing square frame type face milling machine, because the three-axis linkage device, namely the face milling actuating mechanism, is arranged on the beam assembly which needs to move up and down along the main body frame in the milling process, gravity existing in the upward movement and downward inertia force existing in the downward movement have serious influence on the movement of the face milling machine, a movement balance system which ensures the up-and-down stable movement of the three-axis linkage device is specially arranged for the three-axis linkage device, so that the whole square frame type face milling machine is huge in size and can only be used in a fixed position. In order to adjust the height direction, the conventional square frame type face milling machine is provided with four independent lifters at the bottom, and when the height of the face milling machine needs to be adjusted, the lifting height of each lifter is manually adjusted to be in a required state. Disclosure of Invention In order to overcome the defects in the prior art, the invention provides a square frame type face milling machine which does not influence face milling operation under the condition that processing blades are randomly placed, is convenient to move for position use and automatically adjusts the height. To this end, the invention provides a square frame type face milling machine comprising a bracket provided with a pair of brackets, a square frame-shaped main body frame, a fixed pressing device for fixing a wind power blade, a face milling actuating mechanism for milling the end face of the wind power blade, and a leveling mechanism for supporting and adjusting the main body frame to align the end face of the wind power blade, wherein the fixed pressing device and the face milling actuating mechanism are arranged on the main body frame, the leveling mechanism is arranged between the main body frame and the bracket and comprises a pitching adjusting mechanism which is arranged on the bracket and is in driving connection with one side of the bottom of the main body frame, and a pair of heading adjusting mechanisms which are correspondingly arranged on the pair of brackets, wherein each heading adjusting mechanism comprises a heading driving mechanism and a slidable supporting seat, and the main body frame is rotatably arranged on the slidable supporting seat on the left side and the right side of the main body frame along the heading direction through a central rotating shaft so that the heading position of the main body frame can be a