A special polishing machine for the inner arc surface of a guide vane

Abstract

The utility model discloses a kind of special polishing machine for guide vane inner arc surface, which is convenient to realize guide vane inner arc surface polishing and avoid overcut. The special polishing machine for guide vane inner arc surface includes horizontal installation platform; the horizontal installation platform is provided with driving motor, gearbox; the horizontal installation platform one end is provided with vertical installation plate; driving wheel, driven wheel are installed with abrasive band; the inner side of abrasive band is provided with tension pulley; driving wheel and driven wheel are provided with first transition wheel, second transition wheel, third transition wheel and fourth transition wheel; the abrasive band is sequentially passed first transition wheel, second transition wheel, third transition wheel and fourth transition wheel; the lower end of vertical installation plate is provided with mounting seat; the first slider is provided on mounting seat; the second slider is provided on the first slider; the guide vane clamping moving device is installed on the second slider; the guide block is provided above the second slider. The special polishing machine for guide vane inner arc surface can ensure polishing quality, improve work efficiency and reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of guide vane processing, and in particular to a special polishing machine for the inner arc surface of guide vanes. Background Technology

[0002] Polishing is necessary during the machining of engine or turbine blades. For ordinary blades, polishing can be performed using existing polishing machines. However, for guide vanes with excessively large inner curvature, small radius of curvature at the concave arc, and small mounting bosses, polishing with existing equipment, which relies on clamping and positioning with mounting bosses, results in low blade rigidity, easily affecting machining accuracy and increasing machining difficulty. Furthermore, during polishing, the blade body is prone to overcutting due to difficulty passing through the grinding wheel. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a special polishing machine for the inner arc surface of guide vanes that facilitates polishing of the inner arc surface of guide vanes and avoids overcutting.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a special polishing machine for the inner arc surface of a guide vane, including a horizontal mounting platform; a drive motor and a gearbox are provided on the horizontal mounting platform; a vertical mounting plate is provided at one end of the horizontal mounting platform;

[0005] A drive wheel and a driven wheel are mounted on the vertical mounting plate; the gearbox has a first rotating shaft; the drive wheel is disposed at one end of the first rotating shaft and is fixedly connected to the first rotating shaft;

[0006] A sanding belt is mounted on the drive wheel and the driven wheel; a tensioning wheel is provided on the inner side of the sanding belt; a first transition wheel, a second transition wheel, a third transition wheel and a fourth transition wheel are provided between the drive wheel and the driven wheel; the sanding belt passes around the first transition wheel, the second transition wheel, the third transition wheel and the fourth transition wheel in sequence;

[0007] The sand belt forms a downward V-shape along the paths of the second, third, and fourth transition wheels;

[0008] The lower end of the vertical mounting plate is provided with a mounting base; the mounting base is provided with a first slider that moves laterally; the first slider is provided with a second slider that moves longitudinally; the mounting base is provided with a first driving device that drives the first slider to move laterally; the second slider is provided with a second driving device that drives the second slider to move longitudinally.

[0009] The second slider is equipped with a guide vane clamping and moving device; a first guide block is provided above the second slider to restrict the up and down movement path of the guide vane clamping and moving device;

[0010] The guide vane clamping and moving device includes a clamping body for clamping the guide vane; two vertical sliding columns are provided on the lower surface of the clamping body; a first spring is fitted on the vertical sliding columns;

[0011] A support block is provided at the lower end of the vertical sliding column; the vertical sliding column is inserted into the support block and slides in cooperation with the support block.

[0012] A second rotating shaft is provided between the two support blocks; a rotating sleeve is fitted on the second rotating shaft; a limiting curved surface is provided on the first guide block; the outer surface of the rotating sleeve is tangent to the limiting curved surface;

[0013] The lower end of the support block is provided with an inverted T-shaped sliding post; the second slider is provided with a stepped hole that matches the inverted T-shaped sliding post; the inverted T-shaped sliding post is fitted with a second spring.

[0014] Furthermore, the clamping body is provided with a groove that matches the guide vane; one end of the clamping body is provided with a mounting block that matches the guide vane mounting boss.

[0015] Furthermore, the second slider is provided with a vertical guide post; a second guide block is provided on both sides of the support block; the vertical guide post passes through the second guide block.

[0016] Furthermore, both the first and second drive devices employ lead screw drive devices.

[0017] Furthermore, the upper end of the vertical mounting plate is provided with an adjusting device for a tensioning wheel; the tensioning wheel has a rotating shaft; the vertical mounting plate is provided with a vertical sliding groove, through which the rotating shaft passes.

[0018] The adjusting device includes a fixed plate and a vertical rod disposed on one end of a rotating shaft; one end of the vertical rod passes through the fixed plate, and adjusting nuts are provided on both the upper and lower surfaces of the fixed plate; the adjusting nuts are threadedly engaged with the vertical rod.

[0019] Furthermore, the drive wheel, driven wheel, and first transition wheel are all provided with annular limiting grooves that match the sanding belt.

[0020] The beneficial effects of this utility model are: the special polishing machine for the inner arc surface of the guide vane described in this utility model sets a transition wheel so that the sanding belt forms a V-shaped path, thereby making it easier for the sanding belt to penetrate into the inner arc surface of the guide vane for grinding and polishing; thus achieving polishing of areas with excessive curvature of the inner arc surface;

[0021] By setting up a guide vane clamping and moving device, the installation and positioning of the guide vane is facilitated, ensuring rigidity during the guide vane processing. Simultaneously, the cooperation between the guide vane clamping and moving device and the guide block, along with the lateral movement of the first slider, ensures the guide vane's path during polishing, keeping the inner arc surface of the guide vane in constant contact with the abrasive belt. This guarantees polishing of the inner arc surface, avoiding over-cutting or unpolished areas. This facilitates automated grinding and polishing of the guide vane's inner arc surface, ensuring polishing quality, improving work efficiency, reducing costs, shortening the processing cycle by approximately 30%, and reducing processing costs by nearly 60%. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the guide vane in an embodiment of this utility model;

[0023] Figure 2 This is a perspective view of a special polishing machine for the inner arc surface of the guide vane in this utility model embodiment;

[0024] Figure 3 This is a top view of the special polishing machine for the inner arc surface of the guide vane in this embodiment of the utility model;

[0025] Figure 4 This is a side view of a special polishing machine for the inner arc surface of the guide vane in this embodiment of the present invention;

[0026] Figure 5 This is a front view of the special polishing machine for the inner arc surface of the guide vane in this embodiment of the utility model;

[0027] Figure 6 yes Figure 4 AA section view in the middle;

[0028] Figure 7 yes Figure 5 BB section view in the middle;

[0029] Figure 8 yes Figure 6 A magnified view of part C;

[0030] Figure 9 yes Figure 2 A magnified view of part D;

[0031] The diagram indicates the following components: 100-Horizontal mounting platform, 110-Drive motor, 120-Gearbox, 130-Rotating shaft, 140-Column, 200-Vertical mounting plate, 210-Mounting base, 220-First slider, 221-First drive device, 230-Second slider, 231-Second drive device, 300-Drive wheel, 400-Driven wheel, 500-Tension wheel, 510-Adjusting device, 610-First transition wheel, 620-Second transition wheel, 630-Third transition wheel, 640-Fourth transition wheel, 700-Guide block, 800-Guide blade clamping moving device, 810-Clamping body, 820-Mounting block, 830-Vertical sliding column, 840-First spring, 850-Support block, 860-Inverted T-shaped sliding column, 870-Second spring, 880-Second rotating shaft, 890-Rotating sleeve, 900-Sand belt. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] like Figures 1 to 9 As shown, the present invention provides a special polishing machine for the inner arc surface of a guide vane, comprising a horizontal mounting platform 100; a drive motor 110 and a gearbox 120 are provided on the horizontal mounting platform 100; and a vertical mounting plate 200 is provided at one end of the horizontal mounting platform 100.

[0034] The horizontal mounting platform 100 primarily serves to mount the drive unit, which includes a drive motor 110 and a gearbox 120. The drive motor 110 provides power, while the gearbox 120 controls the rotational speed.

[0035] The drive motor 110 is connected to the gearbox 120; the power of the drive motor 110 is transmitted to the gearbox 120, which controls the torque and speed through gearbox 120. Specifically, the horizontal mounting platform 100 can be made of steel plate, and a vertical support column 140 is provided at one end of the horizontal mounting platform 100. The column 140 can be made of angle steel.

[0036] A drive wheel 300 and a driven wheel 400 are mounted on the vertical mounting plate 200; the gearbox has a first rotating shaft 130; the drive wheel 300 is disposed at one end of the first rotating shaft 130 and fixedly connected to the first rotating shaft 130. A sanding belt 900 is mounted on the drive wheel 300 and the driven wheel 400.

[0037] The main function of the vertical mounting plate 200 is to mount the path guide wheels of the sanding belt 900. The path guide wheels of the sanding belt 900 include a drive wheel 300 and a driven wheel 400; the main function of the drive wheel 300 is to drive the sanding belt 900 to rotate. The main function of the driven wheel 400 is to guide the sanding belt 900.

[0038] Specifically, the first rotating shaft 130 passes through the vertical mounting plate 200, and the drive wheel 300 is fixedly mounted on one end of the first rotating shaft 130. Rotation of the first rotating shaft 130 drives the drive wheel 300 to rotate. The drive wheel 300 has a mounting hole that matches the first rotating shaft 130. One end of the first rotating shaft 130 is inserted into the mounting hole, and both the mounting hole and the first rotating shaft 130 have keyways, in which limit keys are installed. The driven wheel 400 is rotatably mounted on the mounting plate 200, and the driven wheel can be mounted on the mounting plate 200 via a rotating shaft.

[0039] A tensioning wheel 500 is provided on the inner side of the sanding belt; a first transition wheel 610, a second transition wheel 620, a third transition wheel 630 and a fourth transition wheel 640 are provided between the driving wheel 300 and the driven wheel 400; the sanding belt 900 passes around the first transition wheel 610, the second transition wheel 620, the third transition wheel 630 and the fourth transition wheel 640 in sequence; the sanding belt 900 forms a downward V-shape on the path of the second transition wheel 620, the third transition wheel 630 and the fourth transition wheel 640.

[0040] The tensioning wheel 500 primarily tensions the abrasive belt 900, preventing slippage between the belt and the drive wheel 300 and driven wheel 400. The first transition wheel 610, second transition wheel 620, third transition wheel 630, and fourth transition wheel 640 primarily guide the path of the abrasive belt 900. Specifically, the second, third, and fourth transition wheels 620 and 630 create a downward V-shape in the path of the abrasive belt 900. This facilitates insertion of the abrasive belt into the inner arc surface of the guide vane 8100, enabling the grinding and polishing of the guide vane 8100's inner arc surface.

[0041] Specifically, since the sanding belt 900 at the third transition wheel 630 needs to grind and polish the inner arc surface of the guide vane 8100, the radius of the third transition wheel 630 is smaller than the minimum radius of curvature of the inner screen.

[0042] The lower end of the vertical mounting plate 200 is provided with a mounting base 210; the mounting base 210 is provided with a first slider 220 that moves laterally; the first slider 220 is provided with a second slider 230 that moves longitudinally; the mounting base 210 is provided with a first driving device 221 that drives the first slider 220 to move laterally; the second slider 230 is provided with a second driving device 231 that drives the second slider 230 to move longitudinally.

[0043] A guide vane clamping moving device 800 is installed on the second slider 230; a first guide block 700 is provided above the second slider 230 to restrict the up and down movement path of the guide vane clamping moving device 800.

[0044] The primary function of the first slider 220 on the mounting base 210 is to achieve the lateral movement of the guide vane clamping moving device 800. The primary function of the second slider 230 is to achieve the longitudinal movement of the guide vane clamping moving device 800. Specifically, the first slider 220 is driven by a first driving device 221, which is a lead screw drive. The second slider 230 is driven by a second driving device 231, which is also a lead screw drive. Both the first driving device 221 and the second driving device 231 can be hydraulic cylinders or electric push rod drive devices.

[0045] The first slider 220 and the first guide block 700 work together to make the guide blade clamping moving device 800 move up and down simultaneously during the lateral movement, so that the movement path of the guide blade matches the shape of the inner arc surface of the guide blade 8100, so that the sanding belt is always in close contact with the inner arc surface, thereby achieving polishing of the inner arc surface.

[0046] The main function of the guide vane clamping and moving device 800 is to clamp and position the guide vane 8100, and to move the guide vane 8100 to achieve polishing.

[0047] Specifically, the guide vane clamping and moving device 800 includes a clamping body 810 for clamping the guide vane 8100; two vertical sliding columns 830 are provided on the lower surface of the clamping body 810; and a first spring 840 is fitted on the vertical sliding columns 830.

[0048] A support block 850 is provided at the lower end of the vertical sliding column 830; the vertical sliding column 830 is inserted into the support block 850 and slides in cooperation with the support block 850.

[0049] A second rotating shaft 880 is provided between the two support blocks 850; a rotating sleeve 890 is fitted on the second rotating shaft 880; a limiting curved surface 710 is provided on the first guide block 700; the outer surface of the rotating sleeve 890 is tangent to the limiting curved surface 710.

[0050] The lower end of the support block 850 is provided with an inverted T-shaped sliding post 860; the second slider 230 is provided with a stepped hole 232 that matches the inverted T-shaped sliding post 860; the inverted T-shaped sliding post 860 is fitted with a second spring 870.

[0051] The main function of the clamping body 810 is to install and fix the guide vane 8100. In order to ensure the rigidity of the guide vane 8100 after installation and fixation, the clamping body 810 is provided with a groove that matches the guide vane 8100; and one end of the clamping body 810 is provided with an installation block 820 that matches the mounting boss of the guide vane 8100.

[0052] The guide vane 8100 is installed in the groove, and the guide vane 8100 is lifted by clamping the body 810, thereby ensuring the rigidity of the guide vane 8100. At the same time, by installing the mounting boss in the mounting block 820, the installation and positioning of the guide vane is facilitated. Furthermore, limiting bosses can be provided around the groove to further limit the guide vane 8100.

[0053] An inverted T-shaped sliding post 860 is provided at the lower end of the support block 850; a stepped hole 232 matching the inverted T-shaped sliding post 860 is provided on the second slider 230; and a second spring 870 is fitted onto the inverted T-shaped sliding post 860. Thus, the inverted T-shaped sliding post 860 allows the support block 850 to move with the second slider 230. The second spring 870 provides a downward clamping force to the support block 850.

[0054] By setting a second rotating shaft 880 between two support blocks 850, and fitting a rotating sleeve 890 on the second rotating shaft 880, the rotating sleeve 890 can be pressed against the limiting curved surface 710 on the first guide block 700 by the downward pressing force of the support block 850, so that the support block 850 can move up and down along the path of the limiting curved surface 710 during the lateral movement.

[0055] Because the lower surface of the clamping body 810 is provided with two vertical sliding posts 830; a first spring 840 is fitted on the vertical sliding posts 830; the vertical sliding posts 830 are inserted into the support block 850, so the clamping body 810 can move with the support block 850; at the same time, the action of the first spring 840 can make the inner arc surface of the guide vane 8100 on the clamping body 810 always in close contact with the sanding belt on the third transition wheel 630; ensuring the polishing of the inner arc surface of the guide vane 8100.

[0056] In the application process, firstly, the first driving device 221 causes the first slider 220 to drive the second slider 230, simultaneously moving the guide vane clamping moving device 800 to one end of the mounting base 210. Then, the guide vane 8100, whose inner arc surface needs polishing, is installed on the guide vane clamping moving device 800. After the guide vane is installed, the first driving device 221 moves the guide vane clamping moving device 800 below the third transition wheel 630; and makes the guide vane clamping moving device 800 flush with one end of the guide surface 710 on the first guide block 700, such as... Figure 7 As shown. Then, the second slider 230 is driven longitudinally by the second drive device 231 so that the end face of the guide vane 8100 is flush with the end face of the sanding belt 900, as shown. Figure 9 As shown, or located inside the 900 end face of the sanding belt.

[0057] Then, the drive motor 110 is started, causing the drive wheel 300 to rotate, which in turn drives the sanding belt 900 to rotate. The rotation of the sanding belt 900 polishes the upper part of the inner arc surface of the guide vane 900. Simultaneously, the first drive device is started, causing the first slider 220 to move towards the guide surface 710. Under the guidance of the guide surface 710, the clamping body 810 moves up and down along the guide surface 710 in the vertical direction during the lateral movement, thereby polishing the inner arc surface of the guide vane 8100 during the movement of the guide vane 8100.

[0058] After the rotating sleeve 890 moves from one end of the guide surface 710 to the other end, the first driving device 221 stops; the second driving device 231 is activated, causing the second slider 230 to move longitudinally, so that the polished portion of the inner arc surface of the guide vane 8100 is removed from the abrasive belt and disengaged from contact with it. Then, the first driving device 221 is activated, causing the first slider 220 to drive the second slider 230 to drive the guide vane clamping moving device 800, and moving the rotating sleeve 890 from the other end of the guide surface 710 to the initial position. During the movement, the inner arc surface of the guide vane 8100 is polished through contact between the abrasive belt 900 and the inner arc surface of the guide vane 8100, and then polished back and forth until the requirements are met.

[0059] At the same time, the sanding belt of the appropriate width can be set so that the sanding belt can cover the inner arc surface of the guide vane 8100, thereby achieving one horizontal movement, one grinding and polishing, and then back and forth grinding and polishing until the requirements are met.

[0060] After polishing is completed, start the first drive device 221 to move the guide vane clamping moving device 800 out of the sand belt 900, and then remove the guide vane 8100.

[0061] In a feasible embodiment, to improve the stability of the device, a vertical guide post 233 is further provided on the second slider 230; a second guide block 851 is provided on both sides of the support block 850; the vertical guide post 233 passes through the second guide block 851.

[0062] In one feasible embodiment, to facilitate the adjustment of the tension wheel 500 and thus the tension of the sanding belt 900, the upper end of the vertical mounting plate 200 is further provided with an adjustment device 510 for the tension wheel 500; the tension wheel 500 has a rotating shaft; the vertical mounting plate 200 is provided with a vertical groove, through which the rotating shaft passes.

[0063] The adjusting device 510 includes a fixed plate and a vertical rod disposed on one end of a rotating shaft; one end of the vertical rod passes through the fixed plate, and adjusting nuts are disposed on both the upper and lower surfaces of the fixed plate; the adjusting nuts are threadedly engaged with the vertical rod.

[0064] In a feasible embodiment, in order to prevent longitudinal displacement of the sanding belt during the grinding and polishing process, the drive wheel 300, the driven wheel 400 and the first transition wheel 610 are all provided with annular limiting grooves that match the sanding belt 900.

Claims

1. A special polishing machine for the inner arc surface of guide vanes, characterized in that: It includes a horizontal mounting platform (100); a drive motor (110) and a gearbox (120) are provided on the horizontal mounting platform (100); a vertical mounting plate (200) is provided at one end of the horizontal mounting platform (100). A drive wheel (300) and a driven wheel (400) are mounted on the vertical mounting plate (200); the gearbox has a first rotating shaft (130); the drive wheel (300) is disposed at one end of the first rotating shaft (130) and fixedly connected to the first rotating shaft (130); A sanding belt (900) is installed on the drive wheel (300) and the driven wheel (400); a tensioning wheel (500) is provided on the inner side of the sanding belt; a first transition wheel (610), a second transition wheel (620), a third transition wheel (630) and a fourth transition wheel (640) are provided between the drive wheel (300) and the driven wheel (400); the sanding belt (900) passes around the first transition wheel (610), the second transition wheel (620), the third transition wheel (630) and the fourth transition wheel (640) in sequence. The sand belt (900) forms a downward V-shape on the paths of the second transition wheel (620), the third transition wheel (630), and the fourth transition wheel (640); The lower end of the vertical mounting plate (200) is provided with a mounting base (210); the mounting base (210) is provided with a first slider (220) that moves laterally; the first slider (220) is provided with a second slider (230) that moves longitudinally; the mounting base (210) is provided with a first driving device (221) that drives the first slider (220) to move laterally; the second slider (230) is provided with a second driving device (231) that drives the second slider (230) to move longitudinally. A guide vane clamping moving device (800) is installed on the second slider (230); a first guide block (700) is provided above the second slider (230) to restrict the up and down movement path of the guide vane clamping moving device (800). The guide vane clamping and moving device (800) includes a clamping body (810) for clamping the guide vane (8100); two vertical sliding columns (830) are provided on the lower surface of the clamping body (810); a first spring (840) is fitted on the vertical sliding columns (830). A support block (850) is provided at the lower end of the vertical sliding column (830); the vertical sliding column (830) is inserted into the support block (850) and slides in cooperation with the support block (850); A second rotating shaft (880) is provided between the two support blocks (850); a rotating sleeve (890) is fitted on the second rotating shaft (880); a limiting curved surface (710) is provided on the first guide block (700); the outer surface of the rotating sleeve (890) is tangent to the limiting curved surface (710); The lower end of the support block (850) is provided with an inverted T-shaped sliding post (860); the second slider (230) is provided with a stepped hole (232) that matches the inverted T-shaped sliding post (860); the inverted T-shaped sliding post (860) is fitted with a second spring (870).

2. The special polishing machine for the inner arc surface of guide vanes as described in claim 1, characterized in that: The clamping body (810) is provided with a groove that matches the guide vane (8100); one end of the clamping body (810) is provided with a mounting block (820) that matches the mounting boss of the guide vane (8100).

3. A special polishing machine for the inner arc surface of a guide vane as described in claim 2, characterized in that: The second slider (230) is provided with a vertical guide post (233); the support block (850) is provided with a second guide block (851) on both sides; the vertical guide post (233) passes through the second guide block (851).

4. A special polishing machine for the inner arc surface of a guide vane as described in claim 1, characterized in that: Both the first drive device (221) and the second drive device (231) are screw drive devices.

5. A special polishing machine for the inner arc surface of a guide vane as described in claim 1, characterized in that: The upper end of the vertical mounting plate (200) is provided with an adjusting device (510) for a tensioning wheel (500); the tensioning wheel (500) has a rotating shaft; the vertical mounting plate (200) is provided with a vertical groove, through which the rotating shaft passes. The adjusting device (510) includes a fixed plate and a vertical rod disposed on one end of a rotating shaft; one end of the vertical rod passes through the fixed plate, and adjusting nuts are disposed on both the upper and lower surfaces of the fixed plate; the adjusting nuts are threadedly engaged with the vertical rod.

6. A special polishing machine for the inner arc surface of a guide vane as described in claim 1, characterized in that: The drive wheel (300), driven wheel (400) and first transition wheel (610) are all provided with annular limiting grooves that match the sanding belt (900).

Images