Clamping fixture for machining mechanical sealing element

Abstract

The utility model discloses a clamping fixture for mechanical sealing element machining, and relates to the technical field of mechanical sealing element machining. The clamping fixture for machining the mechanical sealing element comprises a device bottom plate and an adjustable front-end fixture, and the adjustable front-end fixture comprises a front-end clamping frame, a second motor, a two-way screw rod, a front-end clamping plate, a front-end embedded clamping plate, a hydraulic cylinder, a frame body and an arc-shaped groove B. The front-end clamping frame is arranged at the top of the device bottom plate. The second motor is fixedly connected to the surface of the front-end clamping frame, the bidirectional screw rod is fixedly connected to the output end of the second motor, the bidirectional screw rod is rotatably connected to the surface of the front-end clamping frame, the two front-end clamping plates are both connected to the outer surface of the bidirectional screw rod in a threaded and sleeving mode, and the two front-end clamping plates are both in sliding connection with the front-end clamping frame; the double-arc-shaped groove structure designed according to the curvature difference of the adjustable front-end clamp enhances the clamping stability and meanwhile is suitable for workpieces of different specifications, and the positioning precision in the machining process is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical sealing piece processing technical field, especially mechanical sealing piece processing clamping fixture. BACKGROUND

[0002] Mechanical sealing piece is one of precision, structural relatively complex mechanical basic elements, is the key part of various pump, reaction synthesis cauldron, turbine compressor, submersible motor and other equipment, and its sealing performance and service life depend on many factors, such as selection, machine precision, correct installation and use, mechanical seal is the device for preventing fluid leakage by at least one pair of end faces perpendicular to the rotation axis under the action of fluid pressure and compensation mechanism elastic force (or magnetic force) and the cooperation of auxiliary seal, and the auxiliary seal of compensation ring is the metal bellows and is called bellows mechanical seal.

[0003] The utility model discloses a kind of clamps for mechanical sealing piece processing, and it relates to mechanical sealing piece processing technical field, including base, fixed seat is arranged on the base upper end outer surface, support table is arranged on the fixed seat upper end outer surface, two groups of sliding grooves are arranged on the support table upper end outer surface, two groups of front end clamps are arranged on the support table upper end outer surface, two groups of front end clamps are connected to sliding groove, two groups of front end clamps are oppositely arranged, two groups of cylindrical clamping grooves are arranged in two groups of front end clamps, two groups of fixed grooves are arranged in the inner surface of two groups of cylindrical clamping grooves, the device can realize basic clamping function by the front end clamp and end clamp of setting, but there are following technical limitations, front end clamp is designed with fixed curvature, when responding to workpiece of different geometric characteristics, its self-adapting ability is insufficient, leading to local stress concentration phenomenon in clamping contact surface, in turn causing workpiece micro displacement, finally affect the positioning accuracy of processing process, so a kind of clamping fixture for mechanical sealing piece processing is needed. UTILITY MODEL CONTENTS

[0004] The utility model is directed at least to one of the technical problems existing in the prior art, and provides a clamping fixture for mechanical sealing piece processing, which can solve the problem that the front end clamp has insufficient self-adapting ability when responding to workpieces with different geometric characteristics due to the fixed curvature design, affecting the positioning accuracy of the processing process.

[0005] To achieve the above object, the utility model provides the following technical scheme: A kind of clamping fixture for mechanical seal processing, including device bottom plate and adjustable front end clamp, adjustable front end clamp includes front end clamping frame, second motor, bidirectional screw, front end clamping plate, front end embedded clamping plate, hydraulic cylinder, frame body and arc groove B, front end clamping frame is arranged at the top of device bottom plate, second motor is fixedly connected on the surface of front end clamping frame, bidirectional screw is fixedly connected at the output of second motor, bidirectional screw is rotatably connected on the surface of front end clamping frame, the number of front end clamping plate is two and all are threadedly connected on the outer surface of bidirectional screw, two front end clamping plates are all slidably connected with front end clamping frame, the number of front end embedded clamping plate is two and all are slidably connected in the inside of corresponding front end clamping frame, hydraulic cylinder is fixedly connected on the surface of front end clamping plate, frame body is fixedly connected at the output of hydraulic cylinder, arc groove B is opened in the surface of front end embedded clamping plate, the number of hydraulic cylinder and frame body is two and is symmetrically arranged at the two sides of front end clamping frame.

[0006] Preferably, the surface of the front end clamping plate is provided with a receiving groove for the movement of the front end embedded clamping plate, and the surface of the front end clamping frame is provided with a slot for the movement of the hydraulic cylinder.

[0007] Preferably, the surface of the front end clamping plate is provided with an arc groove A for clamping workpieces, and the curvature of the arc groove A is inconsistent with that of the front end embedded clamping plate.

[0008] Preferably, the surface of the front end clamping frame is fixedly connected with a plurality of limiting rods for limiting the front end clamping plate, and each front end clamping plate is slidably connected with the outer surface of the limiting rod.

[0009] Preferably, the top of the device bottom plate is fixedly connected with a base, and the front end clamping frame is fixedly connected to the top of the base.

[0010] Preferably, the top of the device bottom plate is fixedly connected with a device side plate, and the surface of the device side plate is fixedly connected with a first motor.

[0011] Preferably, the output end of the first motor is fixedly connected with a connecting piece, and a plurality of clamping grooves are formed in the connecting piece.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1、The clamping fixture for mechanical seal processing, the synchronous reverse movement of front end clamping plate is realized by bidirectional screw transmission cooperation limiting rod, the accuracy of workpiece preliminary positioning is ensured, the gradual pressure distribution is formed by embedded clamping plate and arc groove driven by hydraulic cylinder, the contact area is increased and workpiece deformation is avoided, multi-angle adjustment of clamp is realized by first motor through clamping groove type connecting piece, complex processing pose requirements are met, the double-arc groove structure with curvature difference is designed to enhance the clamping stability and adapt to different specifications of workpieces, and the cooperation of slotting and limiting rod guarantees the motion accuracy and reliability of hydraulic system. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the main body of this utility model;

[0016] Figure 2 This is a schematic diagram of the front-end embedded clamping plate of this utility model;

[0017] Figure 3 This is a schematic diagram of the front clamping plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the working state of this utility model.

[0019] Reference numerals in the attached drawings: 1. Device base plate; 2. Device side plate; 3. First motor; 4. Connecting piece; 5. Slot; 6. Base; 7. Front clamping frame; 8. Second motor; 9. Bidirectional screw; 10. Front clamping plate; 11. Limiting rod; 12. Receiving groove; 13. Front embedded clamping plate; 14. Arc groove A; 15. Slot; 16. Hydraulic cylinder; 17. Frame; 18. Arc groove B. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0023] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing, connecting should be understood in broad sense, and the skilled in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0024] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a kind of clamping fixture for mechanical seal processing, including device bottom plate 1 and adjustable front end clamp, adjustable front end clamp includes front end clamping frame 7, second motor 8, bidirectional screw rod 9, front end clamping plate 10, front end embedded clamping plate 13, hydraulic cylinder 16, frame body 17 and arc groove B18, front end clamping frame 7 is set at the top of device bottom plate 1, second motor 8 is fixedly connected on the surface of front end clamping frame 7, bidirectional screw rod 9 is fixedly connected at the output of second motor 8, bidirectional screw rod 9 is rotatably connected on the surface of front end clamping frame 7, the number of front end clamping plate 10 is two and is all threadedly connected on the outer surface of bidirectional screw rod 9, two front end clamping plates 10 are all slidably connected with front end clamping frame 7, the number of front end embedded clamping plate 13 is two and is all slidably connected in the inside of corresponding front end clamping frame 7, hydraulic cylinder 16 is fixedly connected on the surface of front end clamping plate 10, frame body 17 is fixedly connected at the output of hydraulic cylinder 16, arc groove B18 is set on the surface of front end embedded clamping plate 13, the number of hydraulic cylinder 16 and frame body 17 is two and is symmetrically set at the two sides of front end clamping frame 7.

[0025] Further, the surface of front end clamping plate 10 is provided with accommodating groove 12 for the movement of front end embedded clamping plate 13, the surface of front end clamping frame 7 is provided with slot 15 for the movement of hydraulic cylinder 16, the surface of front end clamping plate 10 is provided with arc groove A 14 for clamping workpiece, the curvature of arc groove A 14 and front end embedded clamping plate 13 is inconsistent, a plurality of limiting rods 11 for limiting front end clamping plate 10 are fixedly connected on the surface of front end clamping frame 7, each front end clamping plate 10 is slidably connected on the outer surface of limiting rod 11, the top of device bottom plate 1 is fixedly connected with base 6, front end clamping frame 7 is fixedly connected on the top of base 6, the top of device bottom plate 1 is fixedly connected with device side plate 2, the surface of device side plate 2 is fixedly connected with first motor 3, the output of first motor 3 is fixedly connected with adapter 4, a plurality of clamping grooves 5 are set on adapter 4.

[0026] Further, the second motor 8 drives the bidirectional screw 9 to rotate, and through threaded transmission, the two front end clamping plates 10 are synchronously moved in reverse along the limiting rods 11, the preliminary clamping and positioning of the workpiece is realized, the hydraulic cylinder 16 drives the frame body 17 to drive the front end embedded clamping plate 13 to slide along the accommodating groove 12, the curvature matching of the arc-shaped groove B18 and the surface of the workpiece is utilized to enhance the clamping contact area, the first motor 3 can adjust the overall angle of the clamp through the clamping groove 5 of the adapter 4, and the multi-directional machining demand is met, the curvature difference design of the arc-shaped groove A14 opened on the front end clamping plate 10 and the arc-shaped groove B18 opened on the front end embedded clamping plate 13 makes the clamping process form a progressive pressure distribution, and the workpiece deformation is avoided, and the slot 15 and the limiting rod 11 ensure the accurate movement track of the hydraulic cylinder 16 and improve the clamping stability.

[0027] Further, the bidirectional screw transmission cooperates with the limiting rod to realize the synchronous reverse movement of the front end clamping plate, ensures the accuracy of the preliminary positioning of the workpiece, the hydraulic cylinder drives the embedded clamping plate and the arc-shaped groove to form a progressive pressure distribution, which not only increases the contact area but also avoids the deformation of the workpiece, the first motor realizes multi-angle adjustment of the clamp through the clamping groove adapter, meets the complex machining pose demand, and the double-arc-shaped groove structure with curvature difference design not only enhances the clamping stability but also adapts to different specifications of workpieces, the cooperation of the slot and the limiting rod guarantees the movement accuracy and reliability of the hydraulic system, and solves the problem that the front end clamp has insufficient self-adaptive ability when dealing with workpieces with different geometric characteristics due to the fixed curvature design, which affects the positioning accuracy in the machining process.

[0028] Structural description: device base plate 1: as the bearing basis of the whole clamp system, through high-strength materials, the overall structural stability and anti-deformation ability are ensured, and installation reference surface is provided for other functional modules;

[0029] Device side plate 2: as a lateral support unit, the first motor mounting position is integrated, and the internal reinforcing rib design can effectively disperse the vibration load in the machining process;

[0030] First motor 3: provides rotary power and realizes micron-level precision of clamp angle adjustment through a precision reduction mechanism, which meets the complex machining pose demand;

[0031] Adapter 4: modular clamping groove design is adopted to realize quick replacement, and the multi-angle positioning feature expands the adaptability of the clamp to different processes;

[0032] Clamping groove 5: through the cooperation of the trapezoidal cross-section groove body and the locking mechanism, the self-locking function of angle adjustment is realized while the connection strength is ensured;

[0033] Base 6: transition structure connecting the device base plate and the front end clamping frame, through optimized design, the height and rigidity demand are balanced, so that the front end clamping frame obtains ideal working space;

[0034] Front end clamp frame 7: As the main frame of the clamping mechanism, it adopts a box type structure to balance light weight and torsion resistance, and the internal guide rail system ensures the smooth operation of the moving parts;

[0035] Second motor 8: Servo motor with built-in encoder can accurately control the speed of bidirectional screw, realize digital adjustment and process feedback of clamping force;

[0036] Bidirectional screw 9: Special thread design eliminates reverse clearance, and cooperates with pre-tightening device to ensure the accuracy of synchronous reverse movement of the two front end clamps;

[0037] Front end clamp plate 10: Adopting split structure to reduce processing difficulty, internal lightening hole optimizes dynamic response characteristics while ensuring rigidity;

[0038] Limiting rod 11: After surface hardening treatment, it cooperates with linear bearing to form a high-precision guide system to limit unintended deflection of the front end clamp plate;

[0039] Accommodation groove 12: The profiled slide rail structure allows the front end embedded clamp plate to be adjusted three-dimensionally, and the lubrication channel design prolongs the service life;

[0040] Front end embedded clamp plate 13: Replaceable modular design adapts to different workpiece profiles, and the internal damping material layer can effectively absorb machining vibration;

[0041] Arc-shaped groove A 14: Based on the optimized curvature radius of contact mechanics, it forms a primary clamping surface, and the surface texture design enhances the anti-skid performance;

[0042] Groove 15: Long strip-shaped guide groove integrates hydraulic cylinder displacement space and cable channel function, and the edge chamfering treatment avoids motion interference;

[0043] Hydraulic cylinder 16: Compact cylinder integrates pressure sensor, and realizes real-time dynamic compensation of clamping force through closed-loop control;

[0044] Frame body 17: The hinged force transmission mechanism converts the hydraulic cylinder thrust into multidirectional clamping force, and the universal joint design compensates for installation errors;

[0045] Arc-shaped groove B 18: The curved surface contact area is designed in conjunction with the workpiece profile, and the stress distribution optimization avoids local overload damage to the workpiece.

[0046] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by ordinary skilled persons in the technical field without departing from the purpose of the utility model.

Claims

1. A clamping fixture for machining mechanical seal components, characterized in that, The utility model relates to a device bottom plate (1) are provided with adjustable front end clamp, adjustable front end clamp includes front end clamping frame (7), second motor (8), bidirectional screw rod (9), front end clamping plate (10), front end embedded clamping plate (13), hydraulic cylinder (16), frame body (17) and arc groove B (18), front end clamping frame (7) sets up at the top of device bottom plate (1), second motor (8) fixedly connected in the surface of front end clamping frame (7), bidirectional screw rod (9) fixedly connected in the output of second motor (8), bidirectional screw rod (9) rotationally connected in the surface of front end clamping frame (7), the number of front end clamping plate (10) is two and all threaded sleeve joint in the outer surface of bidirectional screw rod (9), two front end clamping plate (10) all with front end clamping frame (7) slidingly connected, the number of front end embedded clamping plate (13) is two and all slidingly connected in the inside of corresponding front end clamping frame (7), hydraulic cylinder (16) fixedly connected in the surface of front end clamping plate (10), frame body (17) fixedly connected in the output of hydraulic cylinder (16), arc groove B (18) is seted up in the surface of front end embedded clamping plate (13), the number of hydraulic cylinder (16) and frame body (17) is two and is symmetrically set up in the both sides of front end clamping frame (7). The surface of the front end clamping plate (10) is provided with a containing groove (12) for moving the front end embedded clamping plate (13), and the surface of the front end clamping frame (7) is provided with a slot (15) for moving the hydraulic cylinder (16). The surface of the front end clamping plate (10) is provided with an arc-shaped groove A (14) for clamping workpieces, and the curvature of the arc-shaped groove A (14) is inconsistent with that of the front end embedded clamping plate (13).

2. A mechanical seal machining chucking jig according to claim 1, characterized in that: The surface of the front end clamping frame (7) is fixedly connected with a plurality of limiting rods (11) for limiting the front end clamping plate (10), and each front end clamping plate (10) is slidingly sleeved on the outer surface of the limiting rod (11).

3. A mechanical seal machining chucking jig according to claim 1, characterized in that: The top of the device bottom plate (1) is fixedly connected with a base (6), and the front end clamping frame (7) is fixedly connected to the top of the base (6).

4. A mechanical seal machining chucking jig according to claim 1, characterized in that: The top of the device bottom plate (1) is fixedly connected with a device side plate (2), and the surface of the device side plate (2) is fixedly connected with a first motor (3).

5. A mechanical seal machining chucking jig according to claim 1, characterized in that: The output end of the first motor (3) is fixedly connected with a connecting piece (4), and a plurality of clamping grooves (5) are formed in the connecting piece (4).

6. A mechanical seal machining chucking jig according to claim 1, characterized in that: ​ 7. A mechanical seal machining chucking jig according to claim 6, characterized in that: ​

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