CN114654263B

CN114654263B - Turbine blade machining horizontal clamp with adjustable force

Info

Publication number: CN114654263B
Application number: CN202210308092.4A
Authority: CN
Inventors: 王传中; 王双阳; 王传昌
Original assignee: Suqian Hangzhong Intelligent Technology Co ltd
Current assignee: Suqian Hangzhong Intelligent Technology Co ltd
Priority date: 2022-03-26
Filing date: 2022-03-26
Publication date: 2023-07-07
Anticipated expiration: 2042-03-26
Also published as: CN114654263A

Abstract

The invention discloses a horizontal fixture for machining turbine blades with adjustable force, which belongs to the technical field of design fixtures and comprises a mounting frame, wherein one end of the mounting frame is fixedly connected with a mounting plate, the other end of the mounting frame is fixedly connected with a fixing plate, the middle part of the mounting frame is slidably provided with a sliding block, one side of the sliding block, which is close to the fixing plate, is fixedly connected with a moving plate, a screw rod is rotatably arranged in the sliding block, one end of the screw rod is rotatably connected with the fixing plate, and the other end of the screw rod penetrates through the mounting plate and is fixedly connected with a clamping force adjusting device. According to the invention, the clamping force of the clamp can be adjusted according to the clamping requirements of different blades, the turbine blades are effectively protected, and the distance between the clamp and the blades can be quickly adjusted by arranging the position adjusting device, so that the blades can be quickly clamped or loosened.

Description

Turbine blade machining horizontal clamp with adjustable force

Technical Field

The invention relates to the technical field of clamp correlation, in particular to a horizontal clamp for machining a turbine blade with adjustable strength.

Background

The steam turbine is also called a steam turbine engine, and is a rotary steam power device, high-temperature and high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed onto blades, so that a rotor provided with a blade row rotates and simultaneously does work outwards. The steam turbine is an external combustion rotary machine capable of converting steam heat energy into mechanical work. After entering the steam turbine, the steam from the boiler sequentially passes through a series of annularly arranged nozzles and blades, and the heat energy of the steam is converted into mechanical energy for rotating the rotor of the steam turbine. The steam is energy converted in different ways in the turbine, so that turbines with different working principles are formed. Steam turbines are the main equipment of modern thermal power plants and are also used in metallurgical industry, chemical industry and ship power plants.

The blade is a key part of the steam turbine and one of the finest and most important parts, and is subjected to the combined actions of high temperature, high pressure, huge centrifugal force, steam excitation force, corrosion and vibration and water drop erosion in a wet steam area under extremely severe conditions; factors such as aerodynamic performance, processing geometry, surface roughness, installation clearance, running conditions, scaling and the like of the steam turbine influence the efficiency and the output of the steam turbine; the structural design, the vibration intensity and the operation mode of the machine set have decisive influence on the safety and the reliability of the machine set.

The method mainly controls the geometric dimension of the blade in the blade processing, thereby indirectly ensuring the static frequency, a steam turbine is provided with a plurality of stages of blades, molded lines of the blades at each stage are generally different, fixture tools for processing blade root end surfaces, blade crown end surfaces and blade inclined surfaces of the steam turbine are respectively arranged independently, that is, a plurality of tools are needed when processing different parts of the blade, the clamping forces used for the blades with different dimensions are different, and when the fixture is used, an operator judges the clamping force according to experience, the clamping force of the operator can cause deformation or damage to the surfaces of the blades due to overlarge clamping force of the fixture, so the steam turbine cannot be used on the steam turbine, the integral processing of the blades is required to be installed or dismantled on different processing fixture tools for a plurality of times, the traditional fixture is very inconvenient in adjustment, the labor intensity is increased, and the production efficiency is lower.

Disclosure of Invention

The invention aims to provide a horizontal clamp for machining turbine blades with adjustable strength, which solves the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a horizontal anchor clamps of turbine blade processing of adjustable dynamics, includes the mounting bracket, the one end fixedly connected with mounting panel of mounting bracket, the other end fixedly connected with fixed plate of mounting bracket, the mid-section slidable mounting of mounting bracket has the sliding block, one side fixedly connected with movable plate that the sliding block is close to the fixed plate, through setting up movable plate and fixed plate, can realize carrying out fixed centre gripping to turbine blade, the screw rod is installed in the internal rotation of sliding block, the one end and the fixed plate rotation of screw rod are connected, the other end of screw rod runs through mounting panel, and fixedly connected with clamping force adjusting device, adds the dynamics that holding force adjusting device can pass through the regulation centre gripping, the effectual turbine blade that has protected to cause the damage to the work piece when preventing that the clamping force is too big.

The clamping force adjusting device comprises an annular shell, a fluted disc is movably arranged in the middle of the annular shell, the fluted disc is driven to rotate through the annular shell, and then a sliding block is driven to move through a screw rod to achieve clamping, a front cover plate and a rear cover plate are fixedly arranged on two sides of the annular shell, a rotating handle is fixedly arranged on the outer side of the front cover plate, a through hole is formed in the middle of the rear cover plate, one end of the screw rod penetrates through the through hole and is fixedly connected with the fluted disc, a torsion adjusting device is fixedly arranged in an inner cavity of the annular shell and comprises a shell, an adjusting screw is rotatably arranged at the upper end of the shell, a hand wheel is fixedly connected with the upper end of the adjusting screw, the adjusting screw is conveniently arranged to rotate the adjusting screw, a top block is rotatably arranged at the lower end of the adjusting screw, a first spring is movably connected with the lower end of the top block, balls are movably arranged on the lower end of the top block, the balls are connected with the lower end of the shell through the through hole and are fixedly connected with the fluted disc, and the ball grooves are in different annular springs and can be applied to the annular disc through the adjusting screw, and the ball bearings and the annular disc are different in force can be applied to the annular disc and the annular shell through the adjusting screw.

In further embodiments, be provided with position control device in the inner chamber of sliding block, position control device includes fixture block and lower fixture block, through setting up fixture block and lower fixture block, can be when adjusting, upper and lower fixture block separation, and then make fixture head and lead screw break away from, can remove fixture head as required, the equal fixedly connected with rack in both sides of upper fixture block and lower fixture block, the inboard equal fixedly connected with and the lead screw assorted screw thread of upper fixture block and lower fixture block, the lead screw is the rectangle lead screw, the screw thread is the rectangle screw thread, rotate between the rack of upper fixture block and lower fixture block both sides and be connected with the gear, the middle part of gear drives down the fast downward movement of card through setting up gear and rack in the time of can realizing upwards moving the upper fixture block, and then can realize upper and lower fixture block and lead screw break away from simultaneously, movable mounting has the second spring between the inner chamber of the upside of upper fixture block and lower fixture block, the upside fixedly connected with of upper fixture block and the connecting rod fixedly connected with pull rod of connecting rod.

In further embodiments, the spread sheet has all been seted up with the fixed plate relative one side, spread sheet and fixed plate have flexible clamping device through spread sheet and connecting block movable mounting, flexible clamping device includes the thimble receiver, the inside fixed mounting of thimble receiver has a plurality of third spring, the upper end swing joint of third spring has the thimble, the upper end of thimble runs through the thimble receiver, through setting up a plurality of thimble and third spring, can carry out the centre gripping according to turbine blade's shape, and the stress point is more even, has effectually protected turbine blade.

In further embodiments, the upper end of casing runs through the outside of annular shell, adjusting screw's lateral wall is seted up flutedly, the lateral wall of recess is provided with the scale mark, through the scale mark that sets up, can directly observe the biggest clamping force of anchor clamps, rotate handle and torsion adjusting device and all symmetry set up in clamping force adjusting device's outside, through setting up symmetrical torsion adjusting device, can increase torsion's accommodation, when the clamping force that needs more, can be through adjusting two torsion adjusting device, through the sum on the scale mark, can calculate the biggest clamping force of anchor clamps.

In further embodiments, the upper clamping block and the lower clamping block are both in sliding connection with the inner cavity of the sliding block, the thread teeth of the upper clamping block and the lower clamping block are both set to be in a quarter arc shape, and the thread teeth are set to be in a quarter arc shape, so that the upper clamping block and the lower clamping block can be separated from the screw rod without moving a larger distance when the handle is pulled, and the operation and the use are convenient.

In a further embodiment, a pulling handle is arranged on the outer side of the handle, and the pulling handle is fixedly connected with the sliding block.

In a further embodiment, at least three connecting grooves are formed in the movable plate and the fixed plate, and the connecting grooves and the connecting blocks are T-shaped.

In a further embodiment, the fluted disc is fixedly connected with the end part of the screw rod through a key groove and a key, and the assembly and the later maintenance of the clamp can be facilitated by arranging the key groove and the key in a connecting mode.

Compared with the prior art, the invention has the beneficial effects that:

the horizontal clamp for machining the turbine blade with adjustable force can adjust the clamping force of the clamp according to the clamping requirements of different blades, effectively protects the turbine blade, prevents the workpiece from being damaged when the clamping force is overlarge, protects the blade according to the shape of the blade, prevents the clamp from affecting the shape of the blade, and can quickly adjust the distance between the clamp and the blade by arranging the position adjusting device so as to quickly clamp or loosen the blade.

Drawings

FIG. 1 is a schematic diagram of the main structure of the present invention;

FIG. 2 is a schematic view of an exploded view of a clamping force adjusting device according to the present invention;

FIG. 3 is a schematic view of a main body structure of a clamping force adjusting device according to the present invention;

FIG. 4 is a schematic cross-sectional view of a clamping force adjusting device of the present invention;

FIG. 5 is a schematic cross-sectional view of the torsion adjusting apparatus of the present invention;

FIG. 6 is a schematic view of the main structure of the adjusting screw of the present invention;

FIG. 7 is a schematic view of the body structure of the slider and the movable plate of the present invention;

FIG. 8 is a schematic cross-sectional view of a slider of the present invention;

FIG. 9 is a schematic diagram of the explosive structure of the upper latch, the lower latch and the gear according to the present invention;

FIG. 10 is a schematic view of the structure of the upper and lower latches and the gear body of the present invention;

FIG. 11 is a schematic view of the main structure of the flexible clamping device of the present invention;

FIG. 12 is a schematic view of the structure of FIG. 11A;

fig. 13 is a schematic view of a partially cut-away structure of a flexible gripping device of the present invention.

In the figure: 1. a mounting frame; 2. a sliding block; 3. a moving plate; 4. a fixing plate; 5. a connecting groove; 51. a connecting block; 6. a screw rod; 7. clamping force adjusting means; 71. rotating the handle; 72. a front cover plate; 73. fluted disc; 74. an annular shell; 75. a back cover plate; 76. a torsion adjusting device; 761. a hand wheel; 762. adjusting a screw; 7621. a groove; 7622. scale marks; 763. a top block; 764. a first spring; 765. a housing; 766. briquetting; 767. a ball; 8. a position adjusting device; 81. a handle; 82. pulling the handle; 83. a connecting rod; 84. a clamping block is arranged; 85. a second spring; 86. a lower clamping block; 87. a rack; 88. a gear; 89. a thread tooth; 9. a flexible clamping device; 91. a thimble storage box; 92. a thimble; 93. a third spring; 10. and (3) mounting a plate.

Detailed Description

The following description will clearly and fully describe the technical solutions of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

Referring to fig. 1-6, this embodiment provides a horizontal fixture of turbine blade processing of adjustable dynamics, including mounting bracket 1, the one end fixedly connected with mounting panel 10 of mounting bracket 1, the other end fixedly connected with fixed plate 4 of mounting bracket 1, fixed plate 4 passes through screw and mounting bracket 1 fixed connection, so that overhaul and change the slip clamping piece in the mounting bracket 1, the middle part slidable mounting of mounting bracket 1 has slider 2, slider 2 is close to one side fixedly connected with movable plate 3 of fixed plate 4, through setting up movable plate 3 and fixed plate 4, can realize fixing the centre gripping to turbine blade, the inside rotation of slider 2 installs lead screw 6, the one end and the fixed plate 4 rotation of lead screw 6 are connected, the other end of lead screw 6 runs through mounting panel 10, and fixedly connected with clamping force adjusting device 7, add clamping force adjusting device 7 can be through adjusting the dynamics of centre gripping, the effectual turbine blade that has protected, cause the damage to the work piece when the clamping force is too big.

Referring to fig. 1-3, in order to solve the problem that the clamping force can be adjusted, the clamping force adjusting device 7 includes an annular shell 74, a fluted disc 73 is movably mounted in the middle of the annular shell 74, the fluted disc 73 can be driven to rotate by rotating the annular shell 74, and then a sliding block 2 is driven to move by a screw rod 6 to achieve the clamping effect, a front cover plate 72 and a rear cover plate 75 are fixedly mounted on two sides of the annular shell 74, the front cover plate 72 and the rear cover plate 75 are arranged to facilitate the installation or maintenance of parts in the annular shell 74, a rotating handle 71 is fixedly mounted on the outer side of the front cover plate 72, a through hole is formed in the middle of the rear cover plate 75, and one end of the screw rod 6 penetrates through the through hole and is fixedly connected with the fluted disc 73.

Referring to fig. 3-4, in order to solve the problem that the transmission force between the annular shell 74 and the fluted disc 73 can be adjusted, a torsion adjusting device 76 is fixedly installed in the inner cavity of the annular shell 74, referring to fig. 5, the torsion adjusting device 76 comprises a shell 765, an adjusting screw 762 is rotatably installed at the upper end of the shell 765, a hand wheel 761 is fixedly connected to the upper end of the adjusting screw 762, the adjusting screw can be conveniently rotated by the aid of the hand wheel 761, so that the pressure of the fluted disc 73 can be adjusted, a top block 763 is rotatably installed at the lower end of the adjusting screw 762, a first spring 764 is movably connected to the lower end of the top block 763, a pressing block 766 is movably connected to the lower end of the first spring 764, balls 767 are movably installed at the lower end of the pressing block 766, different pressures can be applied to the first spring 764 through rotating the adjusting screw 764, and further different forces can be applied to the fluted disc 73 through the balls 767, accordingly the relative rotation force between the fluted disc 73 and the annular shell 74 and the fluted disc 764 can be adjusted, and the gap between the fluted disc 764 and the gap between the fluted disc and the balls 765 can be adjusted.

Referring to fig. 4, the upper end of the housing 765 penetrates through the outer side of the annular shell 74, in order to achieve accuracy in adjusting the clamping force of the clamp, referring to fig. 6, a groove 7621 is formed in the side wall of the adjusting screw 762, scale marks 7622 are formed in the side wall of the groove 7621, the maximum clamping force of the clamp can be directly observed through the set scale marks 7622, referring to fig. 3, the rotating handle 71 and the torsion adjusting device 76 are symmetrically arranged on the outer side of the clamping force adjusting device 7, the adjusting range of the torsion can be enlarged through arranging the symmetrical torsion adjusting devices 76, and when larger clamping force is needed, the maximum clamping force of the clamp can be calculated through adjusting the sum of the two torsion adjusting devices 76 and the scale marks.

Referring to fig. 4, the fluted disc 73 is fixedly connected with the end of the screw rod 6 through a key slot and a key, and the assembly and the later maintenance of the fixture can be facilitated by arranging the key slot and the key.

Example two

Referring to fig. 1-10, further modifications were made based on example 1:

when the blade is integrally processed, the blade is required to be installed or detached on different processing fixture tools for many times, when the distance between the fixture heads is adjusted, the existing fixture needs to rotate an adjusting rod at the tail part, so that the operation is very inconvenient during adjustment, the position of the fixture heads cannot be quickly positioned according to the requirement, and the processing efficiency is affected, in order to solve the problem, please refer to fig. 7, a position adjusting device 8 is arranged in the inner cavity of the sliding block 2, please refer to fig. 8, the position adjusting device 8 comprises an upper fixture block 84 and a lower fixture block 86, by arranging the upper fixture block 84 and the lower fixture block 86, the upper fixture block and the lower fixture block can be separated during adjustment, the fixture heads are separated from the screw rod, the fixture heads can be moved according to the requirement, the two sides of the upper fixture block 84 and the lower fixture block 86 are fixedly connected with racks 87, the inner sides of the upper fixture block 84 and the lower fixture block 86 are fixedly connected with screw threads 89 matched with the screw rod 6, the screw rod 6 is a rectangular screw rod, the thread teeth 89 are rectangular thread teeth, when the clamping force is large, the screw rod 6 and the thread teeth 89 are rectangular thread teeth, the phenomenon that the screw rod 6 and the thread teeth 89 jump can be prevented, a gear 88 is rotationally connected between the upper clamping block 84 and the racks 87 on two sides of the lower clamping block 86, the middle part of the gear 88 is fixedly connected with the inner cavity of the sliding block 2 through a rotating shaft, the upward movement of the upper clamping block 84 and the downward movement of the lower clamping block 86 can be realized by arranging the gear 88 and the racks 87, the simultaneous separation of the upper clamping block and the lower clamping block from the screw rod 6 can be realized, a second spring 85 is movably arranged between the upper side of the upper clamping block 84 and the lower side of the lower clamping block 86 and the inner cavity of the sliding block 2, the upper side of the upper clamping block 84 is fixedly connected with a connecting rod 83, the upper end of the connecting rod 83 penetrates through the sliding block 2 and is fixedly connected with a handle 81, and the upper clamping block 84 can be conveniently adjusted by arranging the handle 81.

The upper clamping block 84 and the lower clamping block 86 are both in sliding connection with the inner cavity of the sliding block 2, referring to fig. 9-10, the thread teeth 89 of the upper clamping block 84 and the lower clamping block 86 are set to be in a quarter arc shape, and when the handle 81 is pulled, the upper clamping block and the lower clamping block can be separated from the screw rod 6 without moving a larger distance by setting the thread teeth 89 to be in a quarter arc shape, so that the operation and the use are convenient.

A pulling handle 82 is arranged on the outer side of the handle 81, and the pulling handle 82 is fixedly connected with the sliding block 2.

Example III

Referring to fig. 1-13, a further improvement was made over example 2:

the clamp head of the existing clamping device is made of harder materials, when a curved workpiece is clamped, the workpiece is easy to deform or damage, in order to prevent the clamp from damaging the turbine blade, refer to fig. 1, the opposite sides of the movable plate 3 and the fixed plate 4 are provided with connecting grooves 5, the clamping head protection device can be adjusted according to different clamping workpieces by arranging the connecting grooves 5, the application range of the clamp is effectively improved, refer to fig. 1 and 11, the movable plate 3 and the fixed plate 4 are movably provided with the flexible clamping device 9 through the connecting grooves 5 and the connecting blocks 51, refer to fig. 12-13, the flexible clamping device 9 comprises a thimble storage box 91, a plurality of third springs 93 are fixedly arranged in the thimble storage box 91, the upper ends of the third springs 93 are movably connected with thimble 92, the upper ends of the thimble 92 penetrate through the thimble storage box 91, the clamping can be carried out according to the shape of the turbine blade by arranging a plurality of thimble 92 and the third springs 93, and the stress points are relatively uniform, and the turbine blade is effectively protected.

The connecting grooves 5 on the movable plate 3 and the fixed plate 4 are at least three, and the connecting grooves 5 and the connecting blocks 51 are all T-shaped.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a horizontal anchor clamps of turbine blade processing of adjustable dynamics, includes mounting bracket (1), the one end fixedly connected with mounting panel (10) of mounting bracket (1), the other end fixedly connected with fixed plate (4) of mounting bracket (1), its characterized in that: the middle part of the mounting frame (1) is slidably provided with a sliding block (2), one side, close to the fixed plate (4), of the sliding block (2) is fixedly connected with a moving plate (3), a screw rod (6) is rotatably arranged in the sliding block (2), one end of the screw rod (6) is rotatably connected with the fixed plate (4), and the other end of the screw rod (6) penetrates through the mounting plate (10) and is fixedly connected with a clamping force adjusting device (7);

the clamping force adjusting device (7) comprises an annular shell (74), a fluted disc (73) is movably arranged in the middle of the annular shell (74), a front cover plate (72) and a rear cover plate (75) are fixedly arranged on two sides of the annular shell (74), a rotary handle (71) is fixedly arranged on the outer side of the front cover plate (72), a through hole is formed in the middle of the rear cover plate (75), one end of a screw rod (6) penetrates through the through hole and is fixedly connected with the fluted disc (73), a torsion adjusting device (76) is fixedly arranged in an inner cavity of the annular shell (74), the torsion adjusting device (76) comprises a shell (765), an adjusting screw (762) is rotatably arranged at the upper end of the shell (765), a hand wheel (761) is fixedly connected with the upper end of the adjusting screw (762), a top block (763) is rotatably arranged at the lower end of the adjusting screw (762), a first spring (764) is movably connected with the lower end of the top block (763), a pressing block (766) is movably connected with the lower end of the first spring (764), and a gap (767) is matched with the lower end of the fluted disc (767);

the utility model discloses a sliding block, including sliding block (2), including sliding block (6), the inner chamber of sliding block (2) is provided with position control device (8), position control device (8) are including last fixture block (84) and lower fixture block (86), the equal fixedly connected with rack (87) in both sides of going up fixture block (84) and lower fixture block (86), go up the inboard equal fixedly connected with of fixture block (84) and lower fixture block (86) and lead screw (6) assorted screw thread (89), lead screw (6) are rectangular lead screw, screw thread (89) are rectangular screw thread, it is connected with gear (88) to go up the rotation between rack (87) of fixture block (84) and lower fixture block (86) both sides, the middle part of gear (88) is through the inner chamber fixed connection of pivot and sliding block (2), movable mounting has second spring (85) between the downside of going up fixture block (84) and the inner chamber of sliding block (2), the upside fixedly connected with connecting rod (83) of going up fixture block (84), link (83) run through sliding block (2).

2. The adjustable force turbine blade machining horizontal fixture of claim 1, wherein: the utility model discloses a thimble structure, including movable plate (3), fixed plate (4), connecting groove (5) have all been seted up to movable plate (3), movable plate (3) and fixed plate (4) have flexible clamping device (9) through connecting groove (5) and connecting block (51) movable mounting, flexible clamping device (9) include thimble receiver (91), thimble receiver (91) inside fixed mounting has a plurality of third spring (93), the upper end swing joint of third spring (93) has thimble (92), thimble receiver (91) are run through to the upper end of thimble (92).

3. The adjustable force turbine blade machining horizontal fixture of claim 1, wherein: the upper end of casing (765) runs through the outside of annular shell (74), recess (7621) have been seted up to the lateral wall of adjusting screw (762), the lateral wall of recess (7621) is provided with scale mark (7622), rotation handle (71) and torsion adjusting device (76) all symmetry set up in the outside of clamping-force adjusting device (7).

4. The adjustable force turbine blade machining horizontal fixture of claim 1, wherein: the upper clamping block (84) and the lower clamping block (86) are both in sliding connection with the inner cavity of the sliding block (2), and thread teeth (89) of the upper clamping block (84) and the lower clamping block (86) are both in a quarter arc shape.

5. The adjustable force turbine blade machining horizontal fixture of claim 1, wherein: the outside of handle (81) is provided with pulling handle (82), pulling handle (82) and sliding block (2) fixed connection.

6. The adjustable force turbine blade machining horizontal fixture of claim 2, wherein: the connecting grooves (5) on the moving plate (3) and the fixed plate (4) are at least three, and the connecting grooves (5) and the connecting blocks (51) are all T-shaped.

7. The adjustable force turbine blade machining horizontal fixture of claim 1, wherein: the fluted disc (73) is fixedly connected with the end part of the screw rod (6) through a key groove and a key.