Volute machining positioning device

Abstract

The invention discloses a volute machining positioning device, and relates to the technical field of volute machining, the volute machining positioning device comprises a base, an inner wall positioning mechanism, a top positioning mechanism and a side wall positioning mechanism are arranged above the base, and the inner wall positioning mechanism comprises movable supporting blocks arranged in an annular array and used for clamping the inner wall of a volute; and a swing polishing mechanism is arranged on the inner wall positioning mechanism. According to the volute polishing device, the inner wall of a volute can be directly polished while the volute is clamped and positioned, all-directional and stable clamping of the volute can be achieved through the synergistic effect of the inner wall positioning mechanism, the top positioning mechanism and the side wall positioning mechanism, and it is ensured that the volute cannot move or rotate in the polishing process; the function that only volute clamping and positioning can be achieved in the prior art is changed.

Description

Technical Field

[0001] The invention belongs to the technical field of volute processing, and specifically relates to a volute processing positioning device. Background Art

[0002] In the volute manufacturing industry, as an important fluid machinery component, the smoothness of the inner wall of the volute has a crucial impact on the performance and service life of the equipment. Especially after the volute is processed, there are often burrs on the inner wall. These burrs not only affect the aesthetics of the volute, but may also cause obstacles to the fluid during the operation of the equipment, reducing efficiency, and may even pose a safety hazard to the operator due to the burrs pricking the hand.

[0003] However, most of the existing volute processing positioning devices can only achieve clamping and positioning of the volute, lacking the ability to polish the inner wall while clamping. As a result, the inner wall of the volute still needs to be polished manually with a grinding machine, which is not only inefficient, but also often unable to effectively and comprehensively polish due to the arc shape of the inner wall of the volute and the obstruction of the line of sight, thus unable to meet the actual needs. Summary of the Invention

[0004] To solve the problems raised in the above background art, the invention proposes a volute processing positioning device.

[0005] The purpose of the invention can be achieved through the following technical solutions:

[0006] A volute processing positioning device includes a base. An inner wall positioning mechanism, a top positioning mechanism, and a side wall positioning mechanism are arranged above the base. Among them, the inner wall positioning mechanism includes support blocks that are movable and arranged in a circular array for clamping the inner wall of the volute, and a swing grinding mechanism is arranged on the inner wall positioning mechanism;

[0007] The swing grinding mechanism includes a plurality of rotating shafts respectively arranged on the support blocks. A first connecting plate is rotatably connected to the rotating shafts. A first fixing frame is arranged on the first connecting plate. An adaptive unit is arranged on the first fixing frame. A grinding block is arranged on the adaptive unit for grinding the inner wall of the volute.

[0008] As a further preferred of this technical solution: The adaptive unit includes a sleeve rod slidably connected to the first fixing frame. A second spring is arranged between the first fixing frame and the sleeve rod, and the sleeve rod is fixedly connected to the grinding block.

[0009] As a further preferred of this technical solution: A grinding pressure adjusting mechanism is also arranged on the inner wall positioning mechanism;

[0010] The grinding pressure adjusting mechanism includes a guide shaft penetrating through the support block and the push rod. One end of the guide shaft is connected to the sliding plate through a second fixing bracket. A connecting block capable of pushing the guide shaft to slide is arranged at the other end of the guide shaft, and a fourth chute matching the connecting block is arranged on the push rod.

[0011] As a further preference of this technical solution: The grinding pressure adjusting mechanism further includes a second chute arranged on the support block. The sliding plate is slidably arranged inside the second chute, and a third spring is arranged between the sliding plate and the second chute.

[0012] As a further preference of this technical solution: An adjusting drive mechanism for simultaneously driving a plurality of connecting blocks to slide is further arranged on the top surface of the base;

[0013] The adjusting drive mechanism includes a second rotating disc capable of rotating and arranged above the lifting shaft. A plurality of third chutes arranged in an annular array are opened on the second rotating disc. Each third chute is slidably connected with a third slider, and a connecting rod for pushing the connecting block to slide is fixedly connected to the third slider.

[0014] As a further preference of this technical solution: A connecting seat is arranged at the bottom of the base, and a rotary grinding mechanism is arranged on the connecting seat;

[0015] The rotary grinding mechanism includes a driving gear rotating on the bottom surface of the base. The driving gear is meshed and connected with a driven gear, and the driven gear is fixedly connected to the lifting shaft.

[0016] As a further preference of this technical solution: The rotary grinding mechanism further includes a connecting shaft rotatably connected to the lower end of the lifting shaft;

[0017] And a first cylinder is arranged on the connecting seat, and the output end of the first cylinder is fixedly connected to the connecting shaft.

[0018] As a further preference of this technical solution: The length of the driving gear is greater than the length of the driven gear.

[0019] As a further preference of this technical solution: The total length of the third chute is greater than or equal to the sum of the displaceable lengths of the support block and the connecting block.

[0020] As a further preference of this technical solution: A side wall positioning mechanism is arranged outside the inner wall positioning mechanism, and a top positioning mechanism is arranged above the inner wall positioning mechanism.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. In the present invention, while clamping and positioning the volute, it can directly carry out grinding operations on its inner wall. Through the coordinated action of the inner wall positioning mechanism, the top positioning mechanism, and the side wall positioning mechanism, it is possible to achieve all-round and stable clamping of the volute, ensuring that the volute will not move or rotate during the grinding process of its outer wall by the staff, thus changing the existing function that can only achieve clamping and positioning of the volute.

[0023] 2. In the present invention, it can perform conforming grinding according to the irregular shape of the inner wall of the volute, ensuring the comprehensiveness and uniformity of grinding. The design of the adaptive unit enables the grinding block to always remain in contact with the inner wall of the volute. Even if there are arcs or unevenness on the inner wall of the volute, a high-quality grinding effect can be achieved.

[0024] 3. In the present invention, the conforming force between the grinding block and the inner wall of the volute can be adjusted according to the actual grinding requirements. By adjusting the drive of the drive mechanism, it is possible to achieve simultaneous and uniform force adjustment for multiple grinding blocks, ensuring that the volute will not be damaged during the grinding process, while achieving an ideal grinding effect.

[0025] 4. In the present invention, the setting of the rotary grinding mechanism enables the oscillating grinding mechanism to perform rotary grinding around the inner wall of the volute, further improving the flexibility and comprehensiveness of grinding. It is applicable to the arc surface part of the inner wall of the volute, ensuring that these difficult-to-grind areas can also be fully processed, improving the processing quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 is a partial structural cross-section Figure 1 ;

[0028] Figure 3 is Figure 2 an enlarged schematic diagram at A in

[0029] Figure 4 is a partial three-dimensional structural schematic Figure 1 ;

[0030] Figure 5 is Figure 4 an enlarged schematic diagram at B in

[0031] Figure 6 is Figure 2 an enlarged schematic diagram at C in

[0032] Figure 7 is a partial three-dimensional structural schematic Figure 2 ;

[0033] Figure 8Partial structural cross-section of the present invention Figure 2 ;

[0034] Figure 9 Partial structural cross-section of the present invention Figure 3 ;

[0035] Figure 10 Schematic diagram of the partial three-dimensional structure of the present invention Figure 3 。

[0036] Legend: 1. Base; 2. Support frame; 3. Inner wall positioning mechanism; 31. Lifting shaft; 32. Angle iron; 33. First chute; 34. First spring; 35. Guide frame; 36. Support block; 37. First slider; 38. First rubber pad; 39. Push rod; 4. Rotating grinding mechanism; 41. First servo motor; 42. Driving gear; 43. Connecting shaft; 44. Driven gear; 5. Connecting seat; 6. First cylinder; 7. Oscillating grinding mechanism; 71. Slide plate; 72. Second servo motor; 73. First rotating disc; 74. Sleeve; 75. Rotating shaft; 76. First connecting plate; 77. Slide shaft; 78. First fixing frame; 79. Grinding block; 710. Sleeve rod; 711. Second spring; 8. Grinding pressure adjusting mechanism; 81. Connecting block; 82. Guide shaft; 83. Second fixing frame; 84. Third spring; 85. Second chute; 9. Adjusting driving mechanism; 91. Support rod; 92. Second connecting plate; 93. Third AC motor; 94. Second rotating disc; 95. Third chute; 96. Connecting frame; 97. Connecting rod; 98. Third slider; 10. Top positioning mechanism; 101. Second cylinder; 102. Pressing plate; 103. Second rubber pad; 11. Side wall positioning mechanism; 111. Third cylinder; 112. Clamping block; 113. Third rubber pad. Detailed implementation manners

[0037] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] Embodiment 1:

[0039] Please refer to Figures 1 - 10, this application provides a positioning device for volute processing, including a base 1. Above the base 1, an inner wall positioning mechanism 3, a top positioning mechanism 10, and a side wall positioning mechanism 11 are provided. Among them, the inner wall positioning mechanism 3 includes support blocks 36 that are movable and arranged in a circular array for clamping the inner wall of the volute. The top positioning mechanism 10 and the side wall positioning mechanism 11 are respectively used for clamping and positioning the top wall and the side wall of the volute. A swing grinding mechanism 7 is provided on the support block 36. The swing grinding mechanism 7 includes a plurality of rotating shafts 75 respectively arranged on the support block 36. A first connecting plate 76 is rotatably connected to the rotating shaft 75. A first fixing frame 78 is provided on the first connecting plate 76. An adaptive unit is provided on the first fixing frame 78. Since the inner wall of the volute is not a regular circle but is arranged in a shape similar to a U shape, the grinding block 79 can always be attached to the inner wall of the volute through the adaptive component to complete the grinding operation. The adaptive unit is provided with a grinding block 79 for grinding the inner wall of the volute.

[0040] In this embodiment, the swing grinding mechanism 7 further includes a slide plate 71. A second servo motor 72 is provided on the slide plate 71. The output end of the second servo motor 72 is provided with a first rotating disc 73. A sliding sleeve 74 is eccentrically rotatably connected to the first rotating disc 73. A sliding shaft 77 is slidably connected to the inside of the sliding sleeve 74. The sliding shaft 77 is fixedly connected to the first connecting plate 76. By energizing the second servo motor 72 to drive the first rotating disc 73 to rotate, the first rotating disc 73 drives the sliding sleeve 74 thereon to rotate. Then, through the up and down movement of the sliding shaft 77, the first fixing frame 78 at the other end of the first connecting plate 76 drives the grinding block 79 to swing up and down to grind the inner wall of the volute.

[0041] In this embodiment, the adaptive unit includes a sleeve rod 710 slidably connected to the first fixing frame 78. A second spring 711 is provided between the first fixing frame 78 and the sleeve rod 710, and the sleeve rod 710 is fixedly connected to the grinding block 79.

[0042] In this embodiment, the inner wall positioning mechanism 3 further includes a lifting shaft 31 that can move up and down through the base 1. Triangular irons 32 are arranged in a circumferential array on the side wall of the lifting shaft 31. Each triangular iron 32 is provided with a first chute 33, and a first slider 37 is slidably connected inside the first chute 33. A push rod 39 is fixedly connected to the first slider 37, and the push rod 39 is fixedly connected to the support block 36. A first spring 34 is arranged inside the triangular iron 32 between the triangular iron 32 and the first slider 37 to drive the first slider 37 to reset. A circular slide rail is provided on the base 1, and a moving block is arranged inside the circular slide rail. The upper end of the moving block is fixedly connected with a guide frame 35, and the guide frame 35 is slidably connected with the support block 36. While providing support for the support block 36, the guide frame 35 allows the support block 36 to slide thereon, and then fits with the inner wall of the volute for clamping. A first rubber pad 38 is also detachably arranged on the side surface of the support block 36 in contact with the inner wall of the volute to adapt to the uneven change of the inner wall of the volute. Specifically, since the volute is composed of a circular outer shell and detachable side plates, the opening for installing the side plates is sleeved on a plurality of support blocks 36. Then, by starting the first cylinder 6, the connecting shaft 43 and the lifting shaft 31 are pushed upward. The upward movement of the lifting shaft 31 drives the plurality of triangular irons 32 to move upward, thereby causing the first slider 37 to slide inside the first chute 33 and pushing the push rod 39 to slide outward relative to the guide frame 35 to contact and locate the position on the inner wall of the volute, preventing it from rotating.

[0043] The side wall positioning mechanism 11 is arranged outside the inner wall positioning mechanism 3. Specifically, the side wall positioning mechanism 11 includes a plurality of third cylinders 111 arranged on the base 1 and arranged in a circumferential array. A clamping block 112 is arranged at the output end of each third cylinder 111, and a third rubber pad 113 is arranged on the clamping block 112. By flexibly squeezing the outer wall of the volute, the problem of direct contact between rigid materials causing damage is avoided. The top positioning mechanism 10 is arranged above the inner wall positioning mechanism 3. Specifically, the top positioning mechanism 10 includes a second cylinder 101 connected to the base 1 through a support frame 2. The output end of the second cylinder 101 is fixedly connected with a pressing plate 102. A circular groove is provided on the pressing plate 102 to allow the adjustment driving mechanism 9 to pass through. A second rubber pad 103 is arranged on the pressing plate 102, and the second rubber pad 103 has the same function as the third rubber pad 113. It should be noted that the top positioning mechanism 10 and the side wall positioning mechanism 11 can be combined with the inner wall positioning mechanism 3 for clamping and positioning. When machining the side wall of the volute, the top positioning mechanism 10 and the inner wall positioning mechanism 3 can be combined without hindering the side part. When machining the top surface, the side wall positioning mechanism 11 and the inner wall positioning mechanism 3 can be combined without hindering the top surface part.

[0044] Specifically, starting the second servo motor 72 drives the first rotating disc 73 to rotate. The rotation of the first rotating disc 73 can drive the sliding sleeve 74 thereon to rotate, and the rotation of the sliding sleeve 74 can drive the sliding shaft 77 to reciprocate up and down, thereby driving the first connecting plate 76 to rotate around the rotating shaft 75. The first connecting plate 76 drives the first fixing bracket 78 thereon to swing up and down. While the first fixing bracket 78 drives the grinding block 79 to swing up and down to clamp and position the inner wall of the volute, it can directly grind the inner wall of the volute, eliminating the need for workers to hold a grinding head and reach into the interior of the volute to grind the inner wall. This improves the situation where it is easy to have incomplete grinding due to poor visibility inside the volute and increased difficulty of grinding operations due to the arc-shaped inner wall of the volute. Additionally, by setting the adaptive unit, the grinding block 79 can always be in contact with the inner wall of the volute, ensuring the comprehensiveness of grinding.

[0045] Embodiment 2:

[0046] Based on Embodiment 1, a grinding pressure adjusting mechanism 8 is further provided on the inner wall positioning mechanism 3 for adjusting the fitting force between the grinding block 79 on the swinging grinding mechanism 7 and the inner wall. The grinding pressure adjusting mechanism 8 includes a guiding shaft 82 penetrating through the support block 36 and the push rod 39. One end of the guiding shaft 82 is connected to the sliding plate 71 through a second fixing bracket 83. A connecting block 81 capable of pushing the guiding shaft 82 to slide is provided at the other end of the guiding shaft 82, and a fourth chute matching the connecting block 81 is provided on the push rod 39.

[0047] In this embodiment, the grinding pressure adjusting mechanism 8 further includes a second chute 85 provided on the support block 36. The sliding plate 71 is slidably disposed inside the second chute 85, and a third spring 84 is provided between the sliding plate 71 and the second chute 85 for pushing the sliding plate 71 to reset, thereby realizing the reset of the grinding block 79.

[0048] Specifically, by adjusting the drive of the drive mechanism 9, multiple connecting blocks 81 slide simultaneously inside the fourth chute of the push rod 39, thereby pushing the guiding shaft 82 to slide. The guiding shaft 82 pushes the sliding plate 71 to slide outward relative to the support block 36 through the second fixing bracket 83, that is, move towards the inner wall of the volute, realizing the adjustment of the contact force between the grinding block 79 and the inner wall of the volute, and being able to adjust the force between the grinding block 79 and the inner wall of the volute according to actual grinding requirements.

[0049] Embodiment 3:

[0050] On the basis of the second embodiment, an adjustment driving mechanism 9 for simultaneously driving a plurality of connecting blocks 81 to slide is further provided on the top surface of the base 1; the adjustment driving mechanism 9 includes a second rotating disc 94 that can rotate and is arranged above the lifting shaft 31. A plurality of third sliding grooves 95 arranged in an annular array are formed on the second rotating disc 94. A third slider 98 is slidably connected inside each of the third sliding grooves 95. A connecting rod 97 for pushing the connecting block 81 to slide is fixedly connected to the third slider 98. Here, it should be noted that the adjustment driving mechanism 9 further includes a support rod 91 fixedly connected to the base 1. The upper end of the support rod 91 is fixedly connected with a second connecting plate 92. A third AC motor 93 is arranged on the second connecting plate 92. The output end of the third AC motor 93 is fixedly connected to the second rotating disc 94 for driving the second rotating disc 94 to rotate. And a connecting frame 96 for sliding of a plurality of connecting rods 97 is arranged on the bottom surface of the second connecting plate 92.

[0051] In this embodiment, the total length of the third sliding groove 95 is greater than or equal to the sum of the displaceable lengths of the support block 36 and the connecting block 81, so that after the support block 36 moves outwards by a specified distance, the connecting rod 97 can still push the connecting block 81.

[0052] Specifically, by starting the third AC motor 93 to drive the second rotating disc 94 to rotate, the rotation of the second rotating disc 94 can push a plurality of connecting rods 97 outwards relative to the connecting frame 96 under the guiding action of the third sliding grooves 95 thereon, thereby realizing that the connecting rods 97 simultaneously push a plurality of connecting blocks 81 to move, that is, realizing the simultaneous adjustment of the force between a plurality of grinding blocks 79 and the inner wall of the volute, without adjusting one by one, reducing the labor burden of the staff.

[0053] Embodiment Four:

[0054] On the basis of the third embodiment, a connecting seat 5 is provided at the bottom of the base 1. A rotary grinding mechanism 4 is arranged on the connecting seat 5 for driving the swinging grinding mechanism 7 to grind the inner wall of the volute at different positions, and can timely clean the slag adhered to the inner wall of the volute after grinding through the first rubber pad 38 on the support block 36; the rotary grinding mechanism 4 includes a driving gear 42 rotating on the bottom surface of the base 1. The driving gear 42 is meshed with a driven gear 44, and the driven gear 44 is fixedly connected to the lifting shaft 31; the rotary grinding mechanism 4 further includes a first servo motor 41 for driving the driving gear 42 to rotate.

[0055] In this embodiment, the rotary grinding mechanism 4 further includes a connecting shaft 43 rotatably connected to the lower end of the lifting shaft 31; and a first cylinder 6 is provided on the connecting seat 5, and the output end of the first cylinder 6 is fixedly connected to the connecting shaft 43. The function of the first cylinder 6 is to be able to push the lifting shaft 31 up and down, so as to realize the clamping of the inner wall of the volute by the support block 36. As a connecting member between the lifting shaft 31 and the first cylinder 6, the connecting shaft 43 enables the first cylinder 6 not to be affected by the rotation during the rotation of the lifting shaft 31.

[0056] In this embodiment, the length of the driving gear 42 is greater than the length of the driven gear 44, which enables the driven gear 44 to move up and down during the process of the lifting shaft 31, and will not disengage from the driving gear 42, thus achieving the purpose of rotary grinding.

[0057] Specifically, by starting the first servo motor 41 to drive the driving gear 42 to rotate, the rotation of the driving gear 42 drives the connecting shaft 43 to rotate, the connecting shaft 43 drives the lifting shaft 31 to rotate, the lifting shaft 31 drives the angle iron 32 thereon to rotate, and then drives the first rubber pad 38 to rotate through the first slider 37 and the push rod 39. The first rubber pad 38 drives the inner grinding block 79 to rotate around the inner wall of the volute to comprehensively grind the arc surface that is not easy to grind. And it should be noted here that during the rotation of the support block 36, the fitting degree between the first rubber pad 38 and the inner wall of the volute can be adjusted in advance, and only fitting is required. The outer side can be completely clamped and positioned by the top positioning mechanism 10 and the side wall positioning mechanism 11.

[0058] The above embodiments are only used to illustrate the technical method of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical method of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A volute processing positioning device, comprising a base (1), characterized in that: Above the base (1), an inner wall positioning mechanism (3) is provided. Among them, the inner wall positioning mechanism (3) includes support blocks (36) that are movable and arranged in a circular array for clamping the inner wall of the volute. A swing grinding mechanism (7) is provided on the support blocks (36). The swing grinding mechanism (7) includes a plurality of rotating shafts (75) respectively arranged on the support blocks (36). A first connecting plate (76) is rotatably connected to the rotating shafts (75). A first fixing frame (78) is provided on the first connecting plate (76). An adaptive unit is provided on the first fixing frame (78). A grinding block (79) is provided on the adaptive unit for grinding the inner wall of the volute.

2. The positioning device for volute machining according to claim 1, characterized in that, The adaptive unit includes a sleeve rod (710) slidably connected to the first fixing frame (78). A second spring (711) is provided between the first fixing frame (78) and the sleeve rod (710). And the sleeve rod (710) is fixedly connected to the grinding block (79).

3. A volute processing positioning device according to claim 1, characterized in that, A grinding pressure adjusting mechanism (8) is further provided on the inner wall positioning mechanism (3). The grinding pressure adjusting mechanism (8) includes a guide shaft (82) penetrating through the support block (36) and the push rod (39). One end of the guide shaft (82) is connected to the sliding plate (71) through a second fixing frame (83). A connecting block (81) capable of pushing the guide shaft (82) to slide is provided at the other end of the guide shaft (82). And a fourth chute matching the connecting block (81) is provided on the push rod (39).

4. A volute machining positioning device according to claim 3, characterized in that, The grinding pressure adjusting mechanism (8) further includes a second chute (85) provided on the support block (36). The sliding plate (71) is slidably arranged inside the second chute (85). And a third spring (84) is provided between the sliding plate (71) and the second chute (85).

5. A volute machining positioning device according to claim 3, characterized in that, An adjusting drive mechanism (9) for simultaneously driving a plurality of connecting blocks (81) to slide is further provided on the top surface of the base (1). The adjusting drive mechanism (9) includes a second rotating disc (94) that can rotate and is arranged above the lifting shaft (31). A plurality of third chutes (95) arranged in a circular array are provided on the second rotating disc (94). A third slider (98) is slidably connected inside each third chute (95). A connecting rod (97) for pushing the connecting block (81) to slide is fixedly connected to the third slider (98).

6. The positioning device for volute machining according to claim 1, wherein, A connecting seat (5) is provided at the bottom of the base (1). A rotary grinding mechanism (4) is provided on the connecting seat (5). The rotary grinding mechanism (4) includes a driving gear (42) rotating on the bottom surface of the base (1). The driving gear (42) is meshed with a driven gear (44). And the driven gear (44) is fixedly connected to the lifting shaft (31).

7. A volute processing positioning device according to claim 6, characterized in that, The rotary grinding mechanism (4) further includes a connecting shaft (43) rotatably connected to the lower end of the lifting shaft (31). And a first cylinder (6) is provided on the connecting seat (5). The output end of the first cylinder (6) is fixedly connected to the connecting shaft (43).

8. A volute machining positioning device according to claim 6, characterized in that, The length of the driving gear (42) is greater than the length of the driven gear (44).

9. A volute machining positioning device according to claim 5, characterized in that, The total length of the third chute (95) is greater than or equal to the sum of the displaceable lengths of the support block (36) and the connecting block (81).

10. A volute machining positioning device according to claim 1, characterized in that, A side wall positioning mechanism (11) is arranged outside the inner wall positioning mechanism (3), and a top positioning mechanism (10) is arranged above the inner wall positioning mechanism (3).

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