Clamping tool for impeller machining

Abstract

The clamping tool for impeller machining comprises an installation disc, an air cylinder is arranged on one side of the installation disc, a sleeve is fixedly connected into the installation disc in a sleeved mode, an insertion rod can be separated from an insertion hole by pulling a conical plug after an impeller is connected with the sleeve in a sleeved mode, a limiting block can be rapidly turned over by 90 degrees on a pin shaft, and the clamping tool is simple in structure and convenient to use. According to the impeller pre-clamping device, the limiting block is matched with shrinkage of the air cylinder to achieve rapid pre-clamping of the impeller through the limiting block, the clamping efficiency is greatly improved, the problem that a traditional clamp is tedious in operation is solved, meanwhile, an adjustable clamping block structure is adopted, a movable nut is driven through an adjusting bolt, and flexible sliding of the clamping block along a through groove is achieved; the clamping block is pulled and rotated to be connected with the impeller in a clamped mode under the action of the spring, distribution angles of different impeller blades are effectively adapted, clamping blind areas caused by blade interference are avoided, rapidity and stability of the clamping process are guaranteed, and wide compatibility of impeller blade layout is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of impeller processing clamping fixture technology, and specifically relates to a clamping fixture for impeller processing. Background Technology

[0002] An impeller is a rotating component with blades or flow channels, widely used in fluid machinery, mainly for transmitting energy, transporting media, or realizing the conversion between fluid and mechanical energy.

[0003] Currently, Chinese utility model patent CN205074558U discloses an impeller clamping fixture, including a three-jaw chuck, an aluminum block, and a hydraulic ejector pin. One side of the three-jaw chuck is the aluminum block, and the other side is the hydraulic ejector pin. The three-jaw chuck includes a base and three movable jaws with identical structures. One end of each movable jaw located at the center of the base has a boss, the outer edge of which is a clamping surface, which is cylindrical. The aluminum block is cylindrical, with a cylindrical groove at the center of its first plane and a cylindrical protrusion at the center of its second plane. The cylindrical protrusion has a conical groove at its center. The hydraulic ejector pin includes a hydraulic cylinder and an ejector pin. The hydraulic cylinder is connected to the ejector pin via a hydraulic rod, and the ejector pin rests against the conical groove. The clamping surface of the movable jaw accurately fits the inner circle of the impeller, preventing vibration and deformation during processing. The fixture is simple to install, firmly fixed, accurately positioned, and convenient for processing, thus improving production efficiency.

[0004] Traditional clamping fixtures use fixed jaws and bolt clamping structures, which have low clamping efficiency, poor adaptability, and difficulty in achieving rapid pre-positioning. Due to the different distribution angles of impeller blades, fixed jaws are prone to interference with the blades, resulting in ineffective positioning. To solve the above problems, we provide a clamping fixture for impeller machining. Utility Model Content

[0005] The purpose of this utility model is to provide a clamping fixture for impeller processing, so as to solve the problems mentioned in the background art. Traditional clamping fixtures generally adopt fixed jaws or bolt clamping structures, which have low clamping efficiency, poor adaptability, and difficulty in achieving rapid pre-positioning. Since the impeller blades have different distribution angles, the fixed jaws are very likely to interfere with the blades, resulting in ineffective positioning.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a clamping fixture for impeller processing, including a mounting plate, a cylinder is provided on one side of the mounting plate, a sleeve is fixedly sleeved inside the mounting plate, and a limit mechanism is provided at the telescopic end of the cylinder.

[0007] The limiting mechanism includes a round rod with a square groove inside. A pin is sleeved inside the round rod, and a limiting block is rotatably connected to the surface of the pin via a bearing. A plug is slidably sleeved on one end of the round rod, and a conical plug is fixedly connected to one end of the plug. A second round groove is opened inside the round rod, and an annular block is fixedly sleeved on the surface of the plug. The interior of the second round groove is slidably connected to the annular block. A second spring is sleeved on the surface of the plug. A insertion hole adapted to the plug is opened at one end of the limiting block. A fixing nut is fixedly connected to one end of the round rod, and the telescopic end of the cylinder is threadedly connected to the fixing nut.

[0008] Preferably, the surface of the mounting plate has three cut surfaces, the interior of the mounting plate has three T-shaped grooves, the surface of the cut surfaces has through grooves, the interior of the T-shaped grooves is slidably connected to a movable nut, the interior of the through grooves is fitted with an adjusting bolt, and one end of the adjusting bolt is threadedly connected to the movable nut.

[0009] Preferably, the surface of the adjusting bolt is fitted with a locking block, the surface of the adjusting bolt is fitted with a first spring, the surface of the locking block is provided with a first circular groove that matches the first spring, and the inner side of the locking block is provided with two locking slots.

[0010] Preferably, the cylinder is fitted with four mounting bolts, one end of which is threadedly connected to the mounting plate.

[0011] In summary, this utility model has the following beneficial effects:

[0012] This device allows the insertion rod to disengage from the insertion hole by pulling the conical plug after the impeller is connected to the sleeve. This causes the limiting block to quickly rotate 90 degrees on the pin shaft. Combined with the retraction of the cylinder, the limiting block quickly pre-clamps the impeller, significantly improving clamping efficiency and solving the problem of cumbersome operation of traditional clamps. At the same time, it adopts an adjustable clamping block structure, and the adjusting bolt drives the moving nut to allow the clamping block to slide flexibly along the through groove. By pulling and rotating the clamping block, it is engaged with the impeller under the action of the spring, effectively adapting to different impeller blade distribution angles and avoiding clamping blind spots caused by blade interference. This device ensures the speed and stability of the clamping process and has broad compatibility with impeller blade layouts. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0014] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0015] Figure 3 This is an exploded view of a partial structure of this utility model.

[0016] Reference numerals: 1. Mounting plate; 2. Cylinder; 3. Sleeve; 4. Limiting mechanism; 401. Round rod; 402. Square groove; 403. Pin; 404. Limiting block; 405. Insert rod; 406. Conical plug; 407. Second circular groove; 408. Annular block; 409. Second spring; 410. Insertion hole; 411. Fixing nut; 5. Cross-section; 6. T-slot; 7. Through groove; 8. Moving nut; 9. Adjusting bolt; 10. Locking block; 11. First circular groove; 12. First spring; 13. Locking groove; 14. Mounting bolt. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] Example 1:

[0019] refer to Figure 1-3 A clamping fixture for impeller processing includes a mounting plate 1, a cylinder 2 is provided on one side of the mounting plate 1, a sleeve 3 is fixedly sleeved inside the mounting plate 1, and a limit mechanism 4 is provided at the telescopic end of the cylinder 2.

[0020] The limiting mechanism 4 includes a round rod 401, with a square groove 402 inside the round rod 401. A pin 403 is sleeved inside the round rod 401, and a limiting block 404 is rotatably connected to the surface of the pin 403 via a bearing. An insert rod 405 is slidably sleeved at one end of the round rod 401, and a conical plug 406 is fixedly connected to one end of the insert rod 405. A second round groove 407 is opened inside the round rod 401, and an annular block 408 is fixedly sleeved on the surface of the insert rod 405. The interior of the second round groove 407 is slidably connected to the annular block 408. A second spring 409 is sleeved on the surface of the insert rod 405. An insertion hole 410 adapted to the insert rod 405 is opened at one end of the limiting block 404. A fixing nut 411 is fixedly connected to one end of the round rod 401, and the telescopic end of the cylinder 2 is threadedly connected to the fixing nut 411.

[0021] refer to Figure 3 The surface of the mounting plate 1 has three cut surfaces 5, and the interior of the mounting plate 1 has three T-shaped grooves 6. The surface of the cut surface 5 has a through groove 7. The interior of the T-shaped groove 6 is slidably connected to a movable nut 8. The interior of the through groove 7 is fitted with an adjusting bolt 9. One end of the adjusting bolt 9 is threadedly connected to the movable nut 8. By setting the adjusting bolt 9, it is easy to limit and fix the locking block 10.

[0022] refer to Figure 3 The surface of the adjusting bolt 9 is fitted with a locking block 10, and the surface of the adjusting bolt 9 is fitted with a first spring 12. The surface of the locking block 10 is provided with a first circular groove 11 that matches the first spring 12. The inner side of the locking block 10 is provided with two locking grooves 13. By setting the first spring 12, it is easy to apply pressure to the locking block 10.

[0023] refer to Figure 1 The cylinder 2 is fitted with four mounting bolts 14. One end of the mounting bolts 14 is threaded to the mounting plate 1. By setting the mounting bolts 14, the cylinder 2 can be installed in a way that is convenient.

[0024] Brief description of usage: The user can connect the impeller to the limiting mechanism 4 and the sleeve 3, then pull the conical plug 406 to drive the insertion rod 405, causing the insertion rod 405 to drive the annular block 408 to compress the second spring 409. At the same time, one end of the insertion rod 405 disengages from the insertion hole 410, causing the limiting block 404 to rotate 90 degrees on the surface of the pin 403. Then, the cylinder 2 is activated to retract the limiting mechanism 4, causing the output end of the cylinder 2 to drive the limiting block 404 to quickly limit and clamp the impeller, thus effectively facilitating rapid pre-clamping of the impeller. The user can pull the locking block 10 to make the adjusting bolt 9 slide inside the through groove 7. At the same time, the adjusting bolt 9 makes the moving nut 8 slide inside the T-shaped groove 6. Then, pulling the locking block 10 compresses the first spring 12. Then, the locking block 10 is rotated 90 degrees. After being released, the first spring 12 pushes the locking block 10 through the locking groove 13 to engage the impeller. Then, the adjusting bolt 9 is turned to limit and fix the locking block 10 through the moving nut 8. This can effectively facilitate adjustment and limit fixation according to the position of the impeller blades, and avoid the blades blocking the impeller from being limited.

[0025] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A clamping fixture for impeller machining, comprising a mounting plate (1), characterized in that: A cylinder (2) is provided on one side of the mounting plate (1), and a sleeve (3) is fixedly sleeved inside the mounting plate (1). A limit mechanism (4) is provided at the telescopic end of the cylinder (2). The limiting mechanism (4) includes a round rod (401), the inside of which is provided with a square groove (402). A pin (403) is sleeved inside the round rod (401). A limiting block (404) is rotatably connected to the surface of the pin (403) via a bearing. A plug (405) is slidably sleeved at one end of the round rod (401). A conical plug (406) is fixedly connected to one end of the plug (405). A second round groove (407) is provided inside the round rod (401). The surface of the insert rod (405) is fixedly fitted with an annular block (408), the interior of the second circular groove (407) is slidably connected to the annular block (408), the surface of the insert rod (405) is fitted with a second spring (409), one end of the limiting block (404) is provided with an insertion hole (410) that is compatible with the insert rod (405), one end of the round rod (401) is fixedly connected with a fixing nut (411), and the telescopic end of the cylinder (2) is threadedly connected to the fixing nut (411).

2. The clamping fixture for impeller machining according to claim 1, characterized in that: The surface of the mounting plate (1) has three cut surfaces (5), the interior of the mounting plate (1) has three T-shaped grooves (6), the surface of the cut surfaces (5) has a through groove (7), the interior of the T-shaped groove (6) is slidably connected to a movable nut (8), the interior of the through groove (7) is fitted with an adjusting bolt (9), and one end of the adjusting bolt (9) is threadedly connected to the movable nut (8).

3. The clamping fixture for impeller machining according to claim 2, characterized in that: The surface of the adjusting bolt (9) is fitted with a locking block (10), the surface of the adjusting bolt (9) is fitted with a first spring (12), the surface of the locking block (10) is provided with a first circular groove (11) that matches the first spring (12), and the inner side of the locking block (10) is provided with two locking grooves (13).

4. The clamping fixture for impeller machining according to claim 1, characterized in that: The cylinder (2) is fitted with four mounting bolts (14), one end of which is threaded to the mounting plate (1).

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