Guide vane milling machine device for water machine supported by universal joint and working method

Abstract

The invention discloses a guide vane milling machine device for a water machine supported by a universal joint and a working method. A base part is fixed to the ground of a workshop; the two support parts are fixed to the two sides of the base part respectively, and the milling machine body part is fixed to the upper portion of the base part. Two supporting legs of a half-frame type bracket in the portal frame part are arranged in portal frame rails of the milling machine body through wheel parts at the lower ends; the milling machine body part is a planer type milling machine body; the milling cutter lifting part and the crane part move along the track of an upper beam of the semi-frame type bracket; the milling cutter lifting part and the crane part move on the portal frame; the support part comprises a support part guide vane support, universal joints are arranged at the top end of a telescopic shaft of a hydraulic oil cylinder in the support part guide vane support, and the two universal joints are supported at the gravity center position of a guide vane. According to the invention, a counterweight is canceled; therefore, the position of the supporting part can be adjusted before the guide vane is milled, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of numerically controlled machine tools, and in particular relates to a universal joint-supported guide vane milling machine device for a water machine. Background Art

[0002] Milling machines are widely used in the field of metal manufacturing and processing. They are machine tools that use milling cutters to mill workpieces. In addition to milling planes, grooves, gear teeth, threads and spline shafts, they can also process more complex surfaces. They are widely used in mechanical manufacturing and repair departments.

[0003] As the machinery manufacturing industry's requirements for the shape of guide vanes for water turbines increase, the processing and manufacturing efficiency and appearance quality of guide vanes have become issues worthy of attention.

[0004] The gantry milling machines currently used in the market or factories are all integrated devices. The machine tool and its outer protective shell are a whole, and the transmission components and parts are fixed to each other, which makes repair and disassembly extremely inconvenient. When the internal parts reach the end of their service life, the whole machine needs to be disassembled and repaired, which reduces work efficiency. Moreover, when the guide vanes are processed by the milling machine, due to the asymmetric shapes of the left and right sides of the guide vanes, it is necessary to calculate the counterweight for the guide vanes, which requires a large amount of steel plates to be welded on both sides of the guide vanes to maintain balance for easy processing. After milling is completed, the counterweight plate is removed. This method seriously increases the limitations of guide vane processing and is relatively wasteful of manpower, material and financial resources. Therefore, further improving the efficiency and appearance quality of guide vane processing and manufacturing is of great significance to the development of the pumped storage water machine manufacturing industry. Summary of the invention

[0005] In view of the problems existing in the background technology, the present invention provides a universal joint supported guide vane milling machine device for a water machine, which is easy and convenient to disassemble and repair, has strong flexibility, and can effectively improve the efficiency and quality of guide vane processing and manufacturing. The technical scheme includes: a base part, a bracket part, a gantry part, a crane part, a milling cutter lifting part and a milling machine bed part; the base part is fixed to the workshop floor; two bracket parts are respectively fixed on both sides of the base part, and the milling machine bed part is fixed above the base part; two legs of the semi-frame bracket in the gantry part are arranged in the gantry track of the milling machine bed through the wheels at the lower end; the milling machine bed part is the bed of the gantry milling machine; the milling cutter lifting part and the crane part both move along the upper beam track of the semi-frame bracket; the milling cutter lifting part and the crane part move on the gantry;

[0006] The bracket part includes: a guide vane support of the bracket part, a rotating plate, a sliding groove, a rotating shaft, a fixed plate, and an elliptical connecting plate; the sliding groove is arranged on the upper surface of the rotating plate, and the sliding block at the lower end of the guide vane support of the bracket part is inserted into the sliding groove; the rotating plate is connected to the fixed plate through the rotating shaft, and the rotating shaft is the rotating structure of the rotating plate, and the rotating shaft is connected to the power output shaft of the bracket rotating motor, and the bracket rotating motor is fixed to the fixed plate, so that the rotating plate drives the upper guide vane support of the bracket part to rotate around the rotating shaft; the fixed plate is fixedly installed above the elliptical connecting plate, and the fixed plate is the connecting and fixing structure of the rotating plate and the elliptical connecting plate; the elliptical connecting plate is fixedly connected to the chassis of the base part;

[0007] The guide vane support of the bracket part includes: a sliding block, a universal joint, a telescopic shaft, a hydraulic cylinder, a support plate and two laser displacement sensors; the support plate is a steel plate, and the lower end of the support plate is fixedly connected with a sliding block, the sliding block is inserted into a sliding groove, and at the same time, the support plate contacts the upper end surface of the rotating plate to maintain the direction of the telescopic shaft; the hydraulic cylinder is fixed above the support plate, and a universal joint is fixed on the top end of the telescopic shaft of the hydraulic cylinder; the two universal joints are both supported at the center of gravity of the guide vane, and the support drive motor fixed at the lower end of the sliding block is connected to the rotating plate through a support structure displacement component.

[0008] The rotating plate comprises an upper steel plate and a lower steel plate, and a gap is arranged between the upper steel plate and the lower steel plate.

[0009] The gantry part includes: a top plate, a support plug and a semi-frame bracket, wherein the top plate is fixed on the top of the semi-frame bracket through the support plug, the support leg driving motor is fixed on the semi-frame bracket, the two legs of the semi-frame bracket move in the gantry track on the milling machine bed, and one of the legs of the semi-frame bracket is provided with a support leg displacement assembly;

[0010] The milling cutter lifting part includes: a backing plate, a transmission box, a milling head tool, a hydraulic telescopic cylinder, a milling cutter lifting motor and a reducer; the power input end of the transmission box is connected to the power output end of the milling cutter lifting motor through the reducer, and the power output end of the transmission box is connected to the milling head tool, driving the milling head tool to process the guide vane; the cylinder body of the hydraulic telescopic cylinder is fixed to the first surface of the backing plate, the telescopic end of the hydraulic telescopic cylinder is fixed to the upper end of the transmission box body, and the hydraulic telescopic cylinder is located on one side of the upper end of the transmission box; the motor and the reducer are both fixed to the transmission box body;

[0011] The second surface of the backing plate is provided with an upper clamping plate group, a lower clamping plate group, and a milling cutter translation motor, wherein the upper and lower plates of the upper clamping plate group are in contact with the upper and lower end surfaces of the top plate respectively, and the upper and lower plates of the lower clamping plate group are in contact with the upper and lower end surfaces of the upper beam of the semi-frame bracket respectively. The power output of the milling cutter translation motor is connected to the gantry part through the milling cutter rack and pinion transmission group, so that the milling cutter lifting part moves left and right along the guide rail on the semi-frame bracket.

[0012] The base part includes: an L-shaped fixing plate, a rib plate, a chassis, screws and a pad; wherein the L-shaped fixing plate is a fixing structure for the chassis and the pad plate, the pad plate is fixed on top of the chassis by the L-shaped fixing plate and screws, the rib plate is installed on the L-shaped fixing plate, and the chassis is fixed to the workshop floor.

[0013] The crane part includes: a lifting ring, a hanging plate, a bridge, a lifting column, a telescopic connecting plate, a spring washer and a hanging column fixing nut; wherein the bridge is a frame-type structure, and the two bridges are respectively fixed to the protruding plate on one side of the telescopic connecting plate, and the crane drive motor is fixed on one side of the bridge; there are four groups of hanging plates, each group has two plates, and the two groups are respectively welded and fixed on the front and rear sides of the lifting column, and the two groups of hanging plates are symmetrically arranged front and back; a lifting column is installed at the lower part of each group of hanging plates, and both ends of the lifting column are fixed to a hanging plate by spring washers and hanging column fixing nuts; a lifting ring is installed at the middle upper end of the bridge by bolts, and the lifting ring extends from the circular groove in the center of the protruding plate on both sides of the telescopic connecting plate.

[0014] A computer installation half slot is provided on one side of the semi-frame bracket, and a computer with a control system installed is arranged in the computer installation half slot; a milling machine tool trajectory control module, a crane movement module and a guide vane support adjustment module are installed in the control system;

[0015] The crane drive motor is connected to the crane moving module;

[0016] The support leg driving motor, the hydraulic telescopic cylinder, the milling cutter lifting motor and the milling cutter translation motor are connected to the milling machine tool trajectory control module;

[0017] The support rotation motor, the lifting controller of the hydraulic cylinder, the laser displacement sensor and the support drive motor in the support parts on both sides are all connected to the guide vane support adjustment module; two laser displacement sensors are arranged on the side surfaces of the top ends of the telescopic shafts on both sides, and the two laser displacement sensors are on the same radial line.

[0018] A working method of a universal joint supported guide vane milling machine device for a hydraulic machine is also provided, and the technical solution includes:

[0019] Score the curved structure below the guide vane part to mark the center of gravity of the component before machining;

[0020] The guide vane blank is moved to a position to be processed above the milling machine bed by means of a crane, and then the guide vane blank is placed on the milling machine bed;

[0021] Push the guide vane supports of the bracket parts on both sides to just below the center of gravity in the curved structure, and control the two hydraulic cylinders to lift the universal joints and lift the blades through the telescopic shaft;

[0022] Guide vane support adjustment module for automatic leveling:

[0023] Repeat the automatic leveling process until the difference between the two laser displacement sensors on the same side is within the threshold range;

[0024] The control system calls the milling machine tool trajectory control module to perform processing operations on the upper surface of the guide vane blank according to the set milling cutter trajectory;

[0025] The process of automatic leveling by the guide vane support adjustment module is as follows: the guide vane support adjustment module collects the difference between the two laser displacement sensors on both sides, and when the difference between at least one pair of the two laser displacement sensors on the same side exceeds the threshold; the guide vane support adjustment module first calls the lifting controller to lower the universal joint; the guide vane support adjustment module then sends a signal to the bracket rotation motor to drive it to rotate a certain angle according to the movement angle corresponding to the difference and the recorded calibration value; the guide vane support adjustment module finally calls the lifting controller to raise the universal joint; and the difference between the two laser displacement sensors on the same side of each side bracket part is collected again.

[0026] Before processing the top of the guide vane blank, first input the weight of the guide vane blank to be processed, the position of the guide vane support of the bracket part and the milling cutter trajectory in the computer's half-slot bracket part; then preheat it, first start the milling cutter lifting part to start idling debugging of the machine tool.

[0027] The beneficial effects of the present invention are:

[0028] 1. A support part for guide vane processing is set up, and a universal joint device is used to support the guide vane. The two bracket parts of the guide vane support are set on the center of gravity line of the guide vane, and the counterweight is cancelled; thus, the position of the support part can be adjusted before the guide vane milling process, which improves the single counterweight support problem of the guide vane processing and manufacturing by the previous gantry milling, and further improves the production efficiency.

[0029] 2. A laser displacement sensor for measuring counterweight is set up to avoid the consumption of a large amount of steel plates welded on both sides of the guide vane to maintain balance. The position of the laser displacement sensor can be adjusted during operation; the previous processing method of using steel plate counterweights in guide vane processing is improved to avoid wasting manpower, material resources, save processing time and materials, and further improve production efficiency.

[0030] 3. A crane specially designed for the milling machine is installed on one side of the milling machine, which does not affect the additional operation of the overhead crane in the factory and improves the hoisting efficiency of the guide vanes. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an embodiment of a universal joint supported guide vane milling machine device for a hydraulic machine of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the lifting part of the milling cutter in an embodiment of the present invention;

[0033] Figure 3 It is a structural schematic diagram of the gantry part in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of the bracket part in an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of the guide vane support of the bracket part in an embodiment of the present invention;

[0036] Figure 6 It is a structural schematic diagram of the guide vane support of the bracket part in another viewing angle in an embodiment of the present invention;

[0037] Figure 7 It is a structural schematic diagram of the base part in an embodiment of the present invention;

[0038] Figure 8 Schematic diagram of the structure of the crane part in the embodiment of the present invention.

[0039] Among them: 1-milling cutter lifting part; 11-back plate; 12-transmission box; 13-milling head tool; 14-hydraulic telescopic cylinder; 15-milling cutter lifting motor; 16-reducer; 2-gantry part; 21-top plate; 22-support plug; 23-computer installation half slot; 24-semi-frame bracket; 3-gantry groove; 4-bracket part; 41-bracket part guide vane support; 411-universal joint; 412-telescopic shaft; 413-hydraulic cylinder; 414-support plate; 415-excitation Optical displacement sensor; 42-rotating plate; 43-sliding groove; 44-rotating axis; 45-fixed plate; 46-elliptical connecting plate; 5-base part; 51-L-shaped fixed plate; 52-rib plate; 53-chassis; 54-screw; 55-pad; 6-crane part; 61-lifting ring; 62-hanging plate; 63-bridge; 64-lifting column; 65-telescopic connecting plate; 66-pillar fixing nut; 7-milling machine bed part; 71-gantry track; 416-sliding block. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0041] like Figures 1 to 8The specific structure of an embodiment of the present invention shown in the figure comprises: a base part 5, a support part 4, a gantry part 2, a crane part 6, a milling cutter lifting part 1 and a milling machine bed part 7; the base part 5 is fixed to the workshop floor; the two support parts 4 are respectively fixed on both sides of the base part 5, the milling machine bed part 7 is fixed above the base part 5, and the two legs of the semi-frame support 24 in the gantry part 2 are arranged in the gantry track 71 of the milling machine bed 7 through the wheels at the lower end; the milling machine bed part 7 is the bed of the gantry milling machine; the milling cutter lifting part 1 and the crane part 6 both move along the upper beam track of the semi-frame support 24; the milling cutter lifting part 1 and the crane part 6 can both move along the three axial directions on the gantry, so as to control the driving milling cutter to complete the milling processing of the guide vane, and during processing, the universal joints 411 of the two support parts 4 are supported at the center of gravity of the guide vane, thereby eliminating the counterweight.

[0042] Among them, Figure 2 As shown, the milling cutter lifting part 1 includes: a backing plate 11, a transmission box 12, a milling head tool 13, a hydraulic telescopic cylinder 14, a milling cutter lifting motor 15 and a reducer 16; the power input end of the transmission box 12 is connected to the power output end of the milling cutter lifting motor 15 through the reducer 16, and the power output end of the transmission box 12 is connected to the milling head tool 13, driving the milling head tool 13 to process the guide vane; the cylinder body of the hydraulic telescopic cylinder 14 is fixed to the first surface of the backing plate 11, the telescopic end of the hydraulic telescopic cylinder 14 is fixed to the upper end of the transmission box 12, and the hydraulic telescopic cylinder 14 is located on one side of the upper end of the transmission box 12; the motor and the reducer are fixed to the box body of the transmission box 12;

[0043] The second surface of the back plate 11 is provided with an upper clamping plate group 17, a lower clamping plate group 18, and a milling cutter translation motor (not shown in the figure), wherein the upper and lower plates of the upper clamping plate group 17 are in contact with the upper and lower end surfaces of the top plate 21 respectively, and the upper and lower plates of the lower clamping plate group 18 are in contact with the upper and lower end surfaces of the upper beam of the semi-frame bracket 24 respectively. The power output of the milling cutter translation motor is connected to the gantry part 2 through the milling cutter rack and pinion transmission group, so that the milling cutter lifting part 1 moves left and right along the guide rail on the semi-frame bracket 24.

[0044] In this embodiment, the gears in the milling cutter rack and pinion transmission group are connected to the power output of the milling cutter translation motor through a transmission, the milling cutter displacement rack in the milling cutter rack and pinion transmission group is fixed to the semi-frame bracket 24 or the top plate 21, and the milling cutter displacement gear and the milling cutter displacement rack are meshed to realize the movement of the milling cutter lifting part 1 relative to the gantry part 2.

[0045] like Figure 3The gantry part 2 includes a top plate 21, a support plug 22, a computer mounting half slot 23, and a semi-frame bracket 24, wherein the top plate 21 is fixed above the semi-frame bracket 24 through the support plug 22, the support leg driving motor is fixed on the semi-frame bracket 24, and the two legs of the semi-frame bracket 24 move in the gantry track 71 on the milling machine bed 7, and a support leg displacement component is provided on one of the legs of the semi-frame bracket 24.

[0046] In this embodiment, the two legs of the semi-frame bracket 24 move in the gantry rail 71 on the milling machine bed 7 in a wheeled manner. It is easy to understand that other forms of movement that can be freely selected according to their total load-bearing weight (the sum of the guide vane, crane part 6, milling cutter lifting part 1 and gantry part 2) and the guide vane size are also possible. Since multiple methods can be used, they are not shown in the figure.

[0047] In this embodiment, the support foot displacement assembly arranged on the semi-frame bracket 24 is a support foot displacement rack and gear set, wherein the support foot displacement gear is connected to the power output shaft of the support foot drive motor, thereby driving the semi-frame bracket 24 to move, and the support foot displacement rack is fixedly arranged in the space between the top plate 21 and the upper beam of the semi-frame bracket 24; it is easy to understand that other drive displacement forms that can be selected according to the total load-bearing weight and guide vane size are also possible, because multiple methods can be used, and therefore are not shown in the figure.

[0048] like Figure 4 As shown, the bracket part 4 includes: a bracket part guide vane support 41, a rotating plate 42, a sliding groove 43, a rotating shaft 44, a fixed plate 45, and an elliptical connecting plate 46; the sliding groove 43 is arranged on the upper surface of the rotating plate 42, and the sliding block 416 at the lower end of the bracket part guide vane support 41 is inserted into the sliding groove 43; the rotating plate 42 is connected to the fixed plate 45 through the rotating shaft 44, and the rotating shaft 44 is the rotating structure of the rotating plate 42, and the rotating shaft 44 is connected to the power output shaft of the bracket rotating motor, and the bracket rotating motor is fixed to the fixed plate 45, so that the rotating plate 42 drives the upper bracket part guide vane support 41 to rotate around the rotating shaft 44; the fixed plate 45 is fixedly installed above the elliptical connecting plate 46, and the fixed plate 45 is the connecting and fixing structure of the rotating plate 42 and the elliptical connecting plate 46; the elliptical connecting plate 46 is the supporting part of the whole bracket, and is fixedly connected to the chassis of the base part.

[0049] The rotating plate 42 includes an upper steel plate, a lower steel plate, a side fitting plate, an upper rotating shaft hole, a lower rotating shaft hole, a spring washer and a rotating plate fixing nut; the upper steel plate and the lower steel plate are triangular plates of the same size, and the upper and lower ends of the upper steel plate and the lower steel plate are fixed to the threads of the rotating shaft 44 by spring washers and rotating plate fixing nuts, so that a certain gap is provided between the upper steel plate and the lower steel plate; side fitting plates are installed on three sides of the upper steel plate and the lower steel plate.

[0050] like Figure 5 and Figure 6 As shown, the guide vane support 41 of the bracket part includes: a sliding block, a universal joint 411, a telescopic shaft 412, a hydraulic cylinder 413, a support plate 414 and two laser displacement sensors 415; the support plate 414 is a steel plate, and a sliding block 416 is fixedly connected to the lower end of the support plate 414, and the sliding block 416 is inserted into the sliding groove 43. At the same time, the support plate 414 contacts the upper end surface of the rotating plate 42 to maintain the direction of the telescopic shaft 412; the hydraulic cylinder 413 is fixed above the support plate 414, and a universal joint 411 is fixed on the top of the telescopic shaft 412 of the hydraulic cylinder 413; the laser displacement sensor 415 is arranged on the side of the top of the telescopic shaft 412, and the two laser displacement sensors 415 are on the same radial line; the support drive motor fixed at the lower end of the sliding block 416 is connected to the rotating plate 42 through the support structure displacement component.

[0051] In this embodiment, the support structure displacement assembly arranged on the semi-frame bracket 24 is a support structure displacement rack and pinion set, wherein the support structure gear is connected to the power output shaft of the support drive motor, thereby driving the guide vane support 41 of the bracket part to move, and the support structure displacement rack whose shape matches the sliding groove 43 is fixed in the side wall of the sliding groove 43; it is easy to understand that the support structure displacement assembly can select other drive displacement forms according to its total load-bearing weight and guide vane size.

[0052] like Figure 7 As shown, the base part 5 includes: an L-shaped fixing plate 51, a rib plate 52, a chassis 53, screws 54 and a pad 55; wherein the L-shaped fixing plate 51 is a fixing structure of the chassis 53 and the pad 55, and the pad 55 is fixed on the top of the chassis 53 by the L-shaped fixing plate 51 and the screws 54. There are four L-shaped fixing plates 51 in total, and one L-shaped fixing plate 51 is installed on both sides of the pad 55 respectively; the milling machine bed 7 is fixed on the pad 55 by the L-shaped fixing plate 51, which serves as the basis for milling the guide vane; the screws 54 are φ36×4 as a group; the rib plate 52 is installed on the L-shaped fixing plate 51, and the rib plate 52 is a right-angled triangle structure; the chassis 53 and the pad 55 as the overall support are both square steel plates, and the chassis 53 is fixed to the workshop floor.

[0053] like Figure 8As shown, the crane part 6 symmetrically arranged on the left and right sides includes: a lifting ring 61, a hanging plate 62, a bridge 63, a lifting column 64, a telescopic connecting plate 65, a spring washer and a hanging column fixing nut 66; wherein the bridge 63 is a frame-type structure, specifically using a rectangular steel pipe, two bridges 63 are respectively fixed to the protruding plate on one side of the telescopic connecting plate 65, and the crane driving motor is fixed on one side of the bridge 63; there are four groups of hanging plates 62, each group of two pieces, and the two groups are respectively welded and fixed on the front and rear sides of the lifting column 64, and the two groups of hanging plates 62 are symmetrically arranged front and back; a lifting column 64 is installed at the lower part of each group of hanging plates 62, and both ends of the lifting column 64 are fixed to a hanging plate 62 by spring washers and hanging column fixing nuts 66; a lifting ring 61 is installed at the upper end of the middle part of the bridge 63 by bolts, and the lifting ring 61 extends out from the circular groove in the center of the protruding plate on both sides of the telescopic connecting plate 65, and the circular groove is used to accommodate the nuts and screws for installing the lifting ring 61.

[0054] In this embodiment, the bridge displacement assembly arranged on the bridge 63 is a crane displacement rack and gear set, wherein the crane displacement gear is connected to the power output shaft of the crane drive motor, thereby driving the crane part 6 to move through the bridge 63, and the crane displacement rack is fixedly arranged in the space between the top plate 21 and the upper beam of the semi-frame bracket 24; it is easy to understand that other drive displacement forms that can be selected according to their total load-bearing weight and guide vane size are also possible, because a variety of methods can be used, and therefore are not shown in the figure.

[0055] The computer installation half slot 23 is arranged on one side of the semi-frame bracket, and the computer with the control system is arranged in the computer installation half slot 23; the control system specifically installs a milling machine tool trajectory control module, a crane movement module and a guide vane support adjustment module, wherein,

[0056] The crane drive motor is connected to the crane moving module;

[0057] The support leg driving motor, the hydraulic telescopic cylinder 14, the milling cutter lifting motor 15 and the milling cutter translation motor are connected to the milling machine tool trajectory control module;

[0058] The support rotation motor, the lifting controller of the hydraulic cylinder 413, the laser displacement sensor 415 and the support drive motor in the support parts 4 on both sides are all connected to the guide vane support adjustment module; there is a curved structure under the guide vane, and the highest point of the guide vane curved structure is usually 30 to 50 cm away from the milling machine bed. An automatic leveling program is provided in the guide vane support adjustment module.

[0059] Processing methods include:

[0060] Step 1: Draw a line on the curved structure below the guide vane part to mark the center of gravity (line) position of the component before processing;

[0061] Step 2, the control system first calls the crane moving module and the milling machine tool trajectory control module at the same time and operates manually, hangs the guide vane blank to be processed on the lifting column 64 through a rope, and then manually operates the milling machine tool trajectory control module to move the crane part 6 to move the guide vane blank to the processing position above the milling machine bed 7, unties the rope, and places the guide vane blank on the milling machine bed 7;

[0062] Step 3, the control system calls the guide vane support adjustment module and operates manually, and pushes the guide vane supports 41 of the support parts on both sides to the position just below the center of gravity (line) in the curved structure by calling the support rotation motors and the support drive motors on both sides to move successively, and manually controls the two hydraulic cylinders 413 to raise the universal joint 411 and lift the blades through the telescopic shaft 412;

[0063] Step 4: Then call the guide vane support adjustment module for automatic leveling:

[0064] The guide vane support adjustment module collects the difference between the two laser displacement sensors 415 on the same side of each side bracket part 4. When the difference between at least one pair of the two laser displacement sensors 415 on the same side exceeds the threshold value, the guide vane support adjustment module first calls the lifting controller to lower the universal joint 411. The guide vane support adjustment module then sends a signal to the bracket rotation motor to drive the bracket to rotate a certain angle according to the movement angle corresponding to the difference and the recorded calibration value. Finally, the guide vane support adjustment module calls the lifting controller to raise the universal joint 411. The difference between the two laser displacement sensors 415 on the same side of each side bracket part 4 is collected again.

[0065] Repeat step 4 until the difference between the two laser displacement sensors 415 on the same side is within the threshold range, and the automatic leveling is completed; since the position of the guide vane support 41 in the sliding groove 43 is different each time, step 4 is usually performed multiple times;

[0066] Step 5: After the leveling is completed, the control system calls the milling machine tool trajectory control module to perform processing on the upper surface of the guide vane blank according to the set milling cutter trajectory.

[0067] During the leveling in step 4, a laser displacement sensor 415 is used to measure the counterweight. The support position of the guide vane by the universal joint 411 is changed through the feedback of the laser displacement sensor 415, thereby completing the support work on the guide vane blank, so that the milling head tool 13 maintains balance during processing, avoiding the consumption of a large amount of steel plates welded on both sides of the guide vane to maintain balance; the problem of single counterweight support in the previous gantry milling for guide vane processing and manufacturing is improved, and the production efficiency is improved.

[0068] Before processing the guide vane blank in step 5, input the weight of the guide vane blank to be processed, the position of the guide vane support 41 of the bracket part and the milling cutter trajectory in advance in the computer mounting half slot 23 of the bracket part; then preheating is performed, first start the milling cutter lifting part 1 to start idling debugging of the machine tool, and preheating is completed; then proceed to step 5, the milling head tool 13 rotates and operates according to the milling cutter trajectory to complete the milling process.

[0069] In this embodiment, the weight of the guide vane blank to be processed is 2300-2400 kg. The device of this embodiment omits the 500-1200 kg structure for counterweight, saving the welding time and counterweight materials required for multiple counterweights, thereby improving production efficiency.

Claims

1. A universal joint supported guide vane milling machine device for a hydraulic machine, characterized in that: include: A base part (5), a support part (4), a gantry part (2), a crane part (6), a milling cutter lifting part (1) and a milling machine bed part (7); the base part (5) is fixed to the workshop floor; two support parts (4) are respectively fixed to the two sides of the base part (5), and the milling machine bed part (7) is fixed above the base part (5); two legs of the semi-frame support (24) in the gantry part (2) are arranged in the gantry track (71) of the milling machine bed (7) through the wheels at the lower end; the milling machine bed part (7) is the bed of the gantry milling machine; the milling cutter lifting part and the crane part (6) both move along the upper beam track of the semi-frame support (24); The milling cutter lifting part (1) and the crane part move on the gantry; The support part (4) comprises: a support part guide vane support (41), a rotating plate (42), a sliding groove (43), a rotating shaft (44), a fixed plate (45), and an elliptical connecting plate (46); the sliding groove (43) is arranged on the upper surface of the rotating plate (42), and the sliding block at the lower end of the support part guide vane support (41) is inserted into the sliding groove (43); the rotating plate (42) is connected to the fixed plate (45) through the rotating shaft (44), and the rotating shaft (44) is the rotation of the rotating plate (42). The structure comprises a rotating shaft (44) connected to a power output shaft of a support rotating motor, and the support rotating motor is fixed to a fixing plate (45), so that the rotating plate (42) drives the upper support guide vane support (41) to rotate around the rotating shaft (44); the fixing plate (45) is fixedly installed above the elliptical connecting plate (46), and the fixing plate (45) is a connecting and fixing structure of the rotating plate (42) and the elliptical connecting plate (46); the elliptical connecting plate (46) is fixedly connected to the chassis of the base part (5); The guide vane support (41) of the bracket part comprises: a sliding block (416), a universal joint (411), a telescopic shaft (412), a hydraulic cylinder (413) and a support plate (414), wherein the lower end of the support plate (414) is fixedly connected with the sliding block (416), and the support plate (414) is in contact with the upper end surface of the rotating plate (42) to maintain the direction of the telescopic shaft (412); a support drive motor fixed at the lower end of the sliding block (416) is connected to the rotating plate (42) through a support structure displacement component; the hydraulic cylinder (413) is fixed above the support plate (414), and a universal joint (411) is fixed on the top of the telescopic shaft (412) of the hydraulic cylinder (413); and both universal joints (411) are supported at the center of gravity of the guide vane.

2. A universal joint supported guide vane milling machine device for a hydraulic machine according to claim 1, characterized in that: The rotating plate (42) comprises an upper steel plate and a lower steel plate, and a gap is provided between the upper steel plate and the lower steel plate.

3. A universal joint supported guide vane milling machine device for a hydraulic machine according to claim 1 or 2, characterized in that: The gantry part (2) comprises: a top plate (21), a support plug (22), a computer installation half slot (23) and a semi-frame bracket (24), wherein the top plate (21) is fixed on the top of the semi-frame bracket (24) through the support plug (22), a support foot driving motor is fixed on the semi-frame bracket (24), two support feet of the semi-frame bracket (24) move in a gantry track (71) on a milling machine bed (7), and a support foot displacement component is provided on one of the support feet of the semi-frame bracket (24); The milling cutter lifting part (1) comprises: a backing plate (11), a transmission box (12), a milling head tool (13), a hydraulic telescopic cylinder (14), a milling cutter lifting motor (15) and a reducer (16); the power input end of the transmission box (12) is connected to the power output end of the milling cutter lifting motor (15) through the reducer (16), and the power output end of the transmission box (12) is connected to the milling head tool (13), driving the milling head tool (13) to process the guide vane; the cylinder body of the hydraulic telescopic cylinder (14) is fixed on the first surface of the backing plate (11), and the telescopic end of the hydraulic telescopic cylinder (14) is connected to the transmission box (16). The upper end of the transmission box (12) is fixed, and the hydraulic telescopic cylinder (14) is located on one side of the upper end of the transmission box (12); the motor and the reducer are fixed to the box of the transmission box (12); the second surface of the support plate (11) is provided with an upper clamping plate group (17), a lower clamping plate group (18), and a milling cutter translation motor, wherein the upper and lower plates of the upper clamping plate group (17) are respectively in contact with the upper and lower end surfaces of the top plate (21), and the upper and lower plates of the lower clamping plate group (18) are respectively in contact with the upper and lower end surfaces of the upper beam of the semi-frame bracket (24), and the power output of the milling cutter translation motor is connected to the gantry part (2) through the milling cutter rack and pinion transmission group.

4. A universal joint supported guide vane milling machine device for a hydraulic machine according to claim 1 or 2, characterized in that: The base part (5) comprises: an L-shaped fixing plate (51), a rib plate (52), a chassis (53), screws (54) and a pad (55); wherein the L-shaped fixing plate (51) is a fixing structure for the chassis (53) and the pad (55); the pad (55) is fixed on the chassis (53) by means of the L-shaped fixing plate (51) and the screws (54); the rib plate (52) is installed on the L-shaped fixing plate 51; and the chassis (53) is fixed to the workshop floor.

5. The universal joint supported guide vane milling machine device for a hydraulic machine according to claim 3, characterized in that: The crane part (6) comprises: a lifting ring (61), a hanging plate (62), a bridge (63), a lifting column (64), a telescopic connecting plate (65), a spring washer and a column fixing nut (66); wherein the bridge (63) is a frame-type structure, two bridges (63) are respectively fixed to the protruding plate on one side of the telescopic connecting plate (65), and the crane driving motor is fixed to one side of the bridge (63); the hanging plates (62) are four groups in total, each group has two pieces, and the two groups are respectively welded Fixed on the front and rear sides of the lifting column (64), the two groups of hanging plates (62) are symmetrically arranged front and rear; the lifting column (64) is installed at the lower part of each group of hanging plates (62), and both ends of the lifting column (64) are fixed to a piece of hanging plate (62) through spring washers and hanging column fixing nuts (66); the middle upper end of the bridge frame (63) is installed with a lifting ring (61) through bolts, and the lifting ring (61) extends out from the circular groove in the center of the extension plate on both sides of the telescopic connecting plate (65).

6. A universal joint supported guide vane milling machine device for a hydraulic machine according to claim 5, characterized in that: A computer installation half slot (23) is provided on one side of the semi-frame bracket, and a computer with a control system installed is arranged in the computer installation half slot (23); a milling machine tool trajectory control module, a crane movement module and a guide vane support adjustment module are installed in the control system; The crane drive motor is connected to the crane moving module; The support leg driving motor, the hydraulic telescopic cylinder (14), the milling cutter lifting motor (15) and the milling cutter translation motor are connected to the milling machine tool trajectory control module; The support rotation motor, the lifting controller of the hydraulic cylinder (413), the laser displacement sensor (415) and the support drive motor in the support parts (4) on both sides are all connected to the guide vane support adjustment module; two laser displacement sensors (415) are arranged on the side surfaces of the top ends of the telescopic shafts (412) on both sides, and the two laser displacement sensors (415) are on the same radial line.

7. A method for operating a universal joint supported hydraulic guide vane milling machine device as claimed in claim 1, characterized in that: include: Score the curved structure below the guide vane part to mark the center of gravity of the component before machining; The guide vane blank is moved to a position to be processed above the milling machine bed by means of a crane, and then the guide vane blank is placed on the milling machine bed; Push the guide vane supports of the bracket parts on both sides to just below the center of gravity in the curved structure, and control the two hydraulic cylinders to lift the universal joints and lift the blades through the telescopic shaft; Guide vane support adjustment module for automatic leveling: Repeat the automatic leveling process until the difference between the two laser displacement sensors on the same side is within the threshold range; The control system calls the milling machine tool trajectory control module to perform processing operations on the upper surface of the guide vane blank according to the set milling cutter trajectory; The guide vane support adjustment module performs automatic leveling in the following process: the guide vane support adjustment module collects the difference between the two laser displacement sensors on both sides, and when the difference between at least one pair of the two laser displacement sensors on the same side exceeds the threshold value; the guide vane support adjustment module first calls the lifting controller to lower the universal joint; the guide vane support adjustment module then sends a signal to the bracket rotation motor to drive the bracket to rotate a certain angle according to the movement angle corresponding to the difference and the recorded calibration value; The guide vane support adjustment module finally calls the lifting controller to raise the universal joint; and again collects the difference between the two laser displacement sensors on the same side of each side of the bracket part.

8. The working method of the universal joint supported hydraulic guide vane milling machine device according to claim 1, characterized in that: Before processing the top of the guide vane blank, first input the weight of the guide vane blank to be processed, the position of the guide vane support of the bracket part and the milling cutter trajectory in the computer's half-slot bracket part; then preheat it, first start the milling cutter lifting part to start idling debugging of the machine tool.

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