Clamp for machining rotary valve

Abstract

The utility model discloses a clamp for rotary valve processing, and the device includes: bottom plate, be equipped with motor on the bottom plate, one end of motor is connected with screw rod, is connected with moving block on screw rod, is equipped with cylinder on moving block, one end of cylinder is equipped with mounting plate, is seted up in guiding slot on the mounting plate, the T -shaped board is slidably connected in guiding slot, one end of T -shaped board is connected with the piston rod of cylinder, both sides of the other end of T -shaped board are equipped with U -shaped board, the top of one end of mounting plate is equipped with articulated column, two symmetrical V -shaped boards are articulated on articulated column, and the sliding sleeve is slidably connected to one end of two V -shaped boards close to articulated column, and two U -shaped boards are articulated with corresponding sliding sleeve respectively. The utility model has the advantages of: through the unique connecting rod mechanism, ensure that the clamping force always acts on the center line of rotary valve, avoid the workpiece displacement and deformation caused by one -sided clamping or uneven stress, improve the machining accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of machining fixture technology, specifically relating to a fixture for machining rotary valves. Background Technology

[0002] In the machining of rotary valves, the unique shape and structure of the valves present a significant challenge in achieving stable and precise clamping and fixation. Traditional fixtures struggle to flexibly adjust the clamping method and force according to the actual size and shape of the rotary valve, leading to displacement or wobbling during machining, which affects machining accuracy and product quality. This invention proposes a fixture for rotary valve machining, aiming to solve the technical problem of achieving effective, stable, and flexibly adjustable clamping of rotary valves.

[0003] Therefore, there is an urgent need to provide a fixture for machining rotary valves to solve the problems mentioned in the background art. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a jig for machining rotary valves to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides a fixture for machining rotary valves, comprising: a base plate, a motor mounted on the base plate, a lead screw connected to one end of the motor, a moving block threaded onto the lead screw, a cylinder mounted on the moving block, a mounting plate mounted on one end of the cylinder, a guide groove formed on the mounting plate, a T-shaped plate slidably connected within the guide groove, one end of the T-shaped plate connected to the piston rod of the cylinder, U-shaped plates on both sides of the other end of the T-shaped plate, a hinge post above one end of the mounting plate, two symmetrical V-shaped plates hinged to the hinge post, sliding sleeves slidably fitted onto the two V-shaped plates near the hinge post, and the two U-shaped plates respectively hinged to their corresponding sliding sleeves.

[0006] As further explained, the base plate is provided with a fixing plate, and the motor is bolted to the fixing plate.

[0007] As further explained, the base plate is provided with two support plates, and the two support plates are connected to the lead screw through bearings.

[0008] As further explained, the lead screw is connected to the output shaft of the motor via a coupling.

[0009] As further explained, two parallel guide rods are fixed between the two support plates, and the moving block is slidably connected to the guide rods.

[0010] As further explained, the upper and lower ends of the U-shaped plate are hinged to the upper and lower ends of the sliding sleeve, respectively.

[0011] As further explained, the two sliding sleeves cannot pass through the bends and corners of the V-shaped plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a cylinder to drive a T-shaped plate, which in turn drives the U-shaped plates on both sides to move synchronously. The U-shaped plates, through a sliding sleeve hinged to them, drive two V-shaped plates to open and close synchronously and symmetrically around the hinge post. This unique linkage mechanism ensures that the clamping force always acts on the centerline of the rotary valve, realizing an automatic centering function. It effectively avoids workpiece displacement and deformation caused by unilateral clamping or uneven force, and significantly improves machining accuracy.

[0013] 2. The sliding engagement of the V-shaped plate and the sliding sleeve allows the two V-shaped plates to adaptively adjust their angles within a certain range when clamping rotary valves of different diameters or with minor manufacturing tolerances. This ensures that the clamping surface is fully in contact with the outer surface of the valve body, guaranteeing clamping stability and preventing damage to the workpiece surface from over-positioning or rigid impact.

[0014] 3. This utility model integrates horizontal movement (motor-screw driven) and clamping action (cylinder-V-plate driven) into one unit. The motor can precisely control the horizontal position of the entire clamping unit on the base plate to adapt to different specifications of rotary valves or different processing positions; the cylinder can quickly control the clamping and releasing of the V-plate. This design greatly improves the automation level and applicability of the fixture, allows for quick adjustment, and results in high production efficiency.

[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a preferred three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the mounting plate of this utility model.

[0019] In the picture: 1. Base plate; 2. Motor; 3. Lead screw; 4. Moving block; 5. Cylinder; 6. Mounting plate; 7. Guide groove; 8. T-shaped plate; 9. U-shaped plate; 10. Hinge column; 11. V-shaped plate; 12. Sliding sleeve; 13. Fixing plate; 14. Support plate; 15. Guide rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Reference Figure 1-2 A jig for machining a rotary valve includes: a base plate 1, a motor 2 mounted on the base plate 1, a lead screw 3 connected to one end of the motor 2, a moving block 4 threadedly connected to the lead screw 3, the motor 2 driving the lead screw 3 to rotate, causing the moving block 4 and the entire clamping unit on it to move horizontally along the base plate, and to be roughly positioned to the working position; a cylinder 5 mounted on the moving block 4, a mounting plate 6 mounted on one end of the cylinder 5, a guide groove 7 opened on the mounting plate 6, a T-shaped plate 8 slidably connected in the guide groove 7, one end of the T-shaped plate 8 connected to the piston rod of the cylinder 5, and U-shaped plates 9 on both sides of the other end of the T-shaped plate 8, a hinge post 10 mounted above one end of the mounting plate 6, two symmetrical V-shaped plates 11 hinged on the hinge post 10, and sliding sleeves 12 slidably sleeved on the two V-shaped plates 11 near the end of the hinge post 10, and the two U-shaped plates 9 respectively hinged to the corresponding sliding sleeves 12. The piston rod of cylinder 5 extends and pushes T-shaped plate 8 to slide forward along guide groove 7 on mounting plate 6. T-shaped plate 8 drives U-shaped plates 9 on both sides to move forward synchronously. U-shaped plates 9, through their hinge point with sliding sleeve 12, push sliding sleeve 12 to slide forward on the straight rod part of V-shaped plate 11. The forward movement of sliding sleeve 12 forces the two V-shaped plates 11 to rotate synchronously and symmetrically inward around the central hinge post 10, thereby realizing automatic centering and clamping of the workpiece. The unloading process is the reverse. This invention ensures that the clamping force always acts on the center line of the rotary valve through a unique linkage mechanism, realizing the automatic centering function, effectively avoiding workpiece displacement and deformation caused by unilateral clamping or uneven force, and significantly improving machining accuracy.

[0022] A fixing plate 13 is provided on the base plate 1, and the motor 2 is bolted to the fixing plate 13. Compared with the motor 2 being directly connected to the base plate 1, the fixing plate 13 can reduce the vibration amplitude of the motor 2 during operation, avoid the coaxiality deviation between the output shaft of the motor 2 and the lead screw 3 caused by vibration, and ensure the accuracy of subsequent position adjustment; the bolt connection facilitates subsequent disassembly. When the motor 2 is repaired (such as replacing the bearing or cleaning abnormal noise), only the connecting bolts between the motor 2 and the fixing plate 13 need to be removed to remove the motor 2.

[0023] Two support plates 14 are provided on the base plate 1, and the two support plates 14 are connected to the lead screw 3 through bearings. Bearings are installed on the two support plates 14, and the lead screw 3 passes through and is supported by the bearings. The two ends of the lead screw 3 are reliably constrained and can only rotate on its axis. Stable rotational support is provided for the slender lead screw 3, preventing it from bending due to its own weight and load, and ensuring that the moving block 4 moves smoothly and accurately.

[0024] The lead screw 3 is connected to the output shaft of the motor 2 via a coupling. The coupling absorbs minor radial, angular, and axial misalignment errors between the motor 2 and the lead screw 3, preventing harmful stress, protecting the bearings of the motor 2 and the lead screw 3, making the transmission smoother, and reducing noise and vibration.

[0025] Two parallel guide rods 15 are fixed between the two support plates 14, and the moving block 4 is slidably connected to the guide rods 15. This completely eliminates the degree of freedom of the moving block 4 as it rotates with the lead screw 3, forcing it to perform only precise linear motion, thus ensuring the positional accuracy of the clamping unit. The double guide rod structure allows the moving block 4 to withstand greater torque, preventing the reaction force generated during clamping from causing the entire unit to twist, resulting in excellent stability.

[0026] The upper and lower ends of the U-shaped plate 9 are hinged to the upper and lower ends of the sliding sleeve 12, respectively. The two-point hinge forms a stable torque, which allows the pushing force to pass through the center of the sliding sleeve 12, preventing the sliding sleeve 12 from tilting or getting stuck on the straight part of the V-shaped plate 11, and ensuring smooth operation. This makes the sliding sleeve more evenly stressed, reduces wear, and extends its service life.

[0027] The two sliding sleeves 12 cannot pass through the bends of the V-shaped plate 11. By limiting the range of movement of the sliding sleeves 12 through the mechanical structure, it is prevented that the sliding sleeves 12 will cross the bends of the V-shaped plate 11 and fall off when gripping the workpiece, thus ensuring that the mechanism can be reset to the determined initial position each time.

[0028] All components selected in this application (parts whose specific structures are not described) are general standard parts or parts known to those skilled in the art, and their structures and principles can be obtained by those skilled in the art through technical manuals. This knowledge can be obtained through conventional experimental methods.

[0029] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0030] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0031] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A fixture for machining rotary valves, characterized in that, include: A base plate (1) is provided with a motor (2). One end of the motor (2) is connected to a lead screw (3). A moving block (4) is threaded onto the lead screw (3). A cylinder (5) is provided on the moving block (4). One end of the cylinder (5) is provided with a mounting plate (6). A guide groove (7) is provided on the mounting plate (6). A T-shaped plate (8) is slidably connected in the guide groove (7). One end of the T-shaped plate (8) is connected to the piston rod of the cylinder (5). Both sides of the other end of the T-shaped plate (8) are provided with U-shaped plates (9). A hinge post (10) is provided above one end of the mounting plate (6). Two symmetrical V-shaped plates (11) are hinged on the hinge post (10). The two V-shaped plates (11) are slidably sleeved with sliding sleeves (12) at the end near the hinge post (10). The two U-shaped plates (9) are respectively hinged to the corresponding sliding sleeves (12).

2. The jig for machining a rotary valve as described in claim 1, characterized in that, The base plate (1) is provided with a fixing plate (13), and the motor (2) is bolted to the fixing plate (13).

3. The jig for machining a rotary valve as described in claim 1, characterized in that, The base plate (1) is provided with two support plates (14), and the two support plates (14) are connected to the lead screw (3) through bearings.

4. The jig for machining a rotary valve as described in claim 3, characterized in that, The lead screw (3) is connected to the output shaft of the motor (2) via a coupling.

5. A jig for machining a rotary valve as described in claim 3, characterized in that, Two parallel guide rods (15) are fixed between the two support plates (14), and the moving block (4) is slidably connected to the guide rods (15).

6. The jig for machining a rotary valve as described in claim 1, characterized in that, The upper and lower ends of the U-shaped plate (9) are hinged to the upper and lower ends of the sliding sleeve (12), respectively.

7. A jig for machining a rotary valve as described in claim 1, characterized in that, The two sliding sleeves (12) cannot pass through the bend of the V-shaped plate (11).

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