CN116922170B - Sectional type self-adaptation grinding device is used in valve rod processing - Google Patents
Sectional type self-adaptation grinding device is used in valve rod processing Download PDFInfo
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- CN116922170B CN116922170B CN202311193061.XA CN202311193061A CN116922170B CN 116922170 B CN116922170 B CN 116922170B CN 202311193061 A CN202311193061 A CN 202311193061A CN 116922170 B CN116922170 B CN 116922170B
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- valve rod
- disc
- mounting shaft
- adjusting
- tension
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- 238000003754 machining Methods 0.000 claims abstract description 21
- 238000005498 polishing Methods 0.000 claims description 54
- 238000007789 sealing Methods 0.000 claims description 29
- 230000001360 synchronised effect Effects 0.000 claims description 14
- 238000013016 damping Methods 0.000 claims description 12
- 230000003044 adaptive effect Effects 0.000 claims description 8
- 230000001502 supplementing effect Effects 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 14
- 230000009471 action Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0092—Grinding attachments for lathes or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/35—Accessories
Abstract
The invention relates to the technical field of valve rod machining, in particular to a sectional type self-adaptive grinding device for valve rod machining, which comprises a jacking column coaxially abutted against two ends of a valve rod and capable of driving the jacking column to rotate, a movable disc capable of moving along the length direction of the valve rod, a grinding wheel arranged on one side of the movable disc and capable of moving along the radial direction of the valve rod, and an air pressure guiding assembly for driving the grinding wheel to be abutted against the circumferential surface of the valve rod under constant pressure, wherein the movable disc is provided with a first avoidance opening through which the jacking column and the valve rod can pass, and in a working state, the air pressure guiding assembly guides the grinding wheel to be abutted against the rotating valve rod under constant pressure and then move along the length direction of the valve rod.
Description
Technical Field
The invention relates to the technical field of valve rod machining, in particular to a sectional type self-adaptive polishing device for valve rod machining.
Background
The valve is a pipeline accessory for opening and closing a pipeline, controlling the flow direction, adjusting and controlling the parameters (temperature, pressure and flow) of a conveying medium; according to the functions thereof, it can be classified into a shut-off valve, a check valve, a regulating valve, etc.; the valve rod is an important valve component and is used for transmission, the upper part is connected with an actuating mechanism or a handle, and the lower part directly drives the valve core to move or rotate so as to realize the valve opening and closing or adjusting function.
When producing the valve rod, need polish the valve rod of running out the groove through the equipment of polishing to guarantee the precision of valve rod, but prior art's valve rod equipment of polishing structure is complicated, and complex operation has increased workman's labour when processing the valve rod of equidimension, has reduced work efficiency simultaneously.
Chinese patent CN110900327B discloses a valve rod polishing apparatus for valve processing, a bottom frame, an upright post, a supporting platform, a rectangular groove, a blanking baffle, a polishing head, a control switch and a power cord.
The valve stems required for different valves are different, for example, a part of the valve stems consist of parts with different diameters, however, when the valve stem polishing device polishes the valve stems, only the largest diameter section of the valve stems can be polished, and the smaller diameter section cannot be polished, so that the polishing device cannot be suitable for the valve stems with different diameter sections.
Disclosure of Invention
To above-mentioned problem, provide a sectional type self-adaptation grinding device for valve rod processing, can with grinding wheel with invariable pressure butt behind rotatory valve rod and along the length direction of valve rod removal through the atmospheric pressure guide subassembly, then can polish the different diameter sections of valve rod with invariable pressure, solved the unable problem of polishing the valve rod that has different diameter sections of current equipment.
In order to solve the problems in the prior art, the invention provides a sectional type self-adaptive polishing device for valve rod machining, which comprises a jacking column coaxially abutted at two ends of a valve rod and capable of driving the jacking column to rotate, a moving disc capable of moving along the length direction of the valve rod, a polishing wheel arranged at one side of the moving disc and capable of moving along the radial direction of the valve rod, and an air pressure guiding assembly for driving the polishing wheel to be abutted on the circumferential surface of the valve rod under constant pressure, wherein the moving disc is provided with a first avoidance opening for the jacking column and the valve rod to pass through, and in a working state, the air pressure guiding assembly guides the polishing wheel to move along the length direction of the valve rod after being abutted on the rotating valve rod under constant pressure; the polishing device further comprises an adjusting assembly, the adjusting assembly is arranged on one side of the movable disc and connected with the polishing wheel, the adjusting assembly can drive the polishing wheel to move along the radial direction of the valve rod and enable the polishing wheel to be abutted against the polishing wheel, and the adjusting assembly is provided with a second avoidance port through which the jacking column and the valve rod can pass; at least two polishing wheels are arranged on one side of the movable disc in the circumferential direction; the polishing device comprises a polishing wheel, a valve rod, a movable disc, a movable assembly, a first mounting shaft, a second mounting shaft, a polishing wheel and a polishing disc, wherein the movable assembly is arranged on one side of the movable disc, the movable assembly comprises a movable seat and the first mounting shaft, the movable seat is arranged on one side of the movable disc in a sliding manner along the radial direction of the valve rod, the first mounting shaft is arranged on the movable seat, the first mounting shaft is parallel to the valve rod, and the polishing wheel is coaxially arranged on the first mounting shaft; the adjusting assembly comprises an adjusting disc and a rotary driving piece, the adjusting disc and the valve rod are coaxially and rotatably arranged on one side of the moving disc, the second avoiding opening is positioned at the central position of the adjusting disc, the second avoiding opening is provided with an inclined guide groove which is circumferentially arranged along the second avoiding opening, a first limit opening which is located in the inclined guide groove and far away from the axis of the adjusting disc, and a second limit opening which is located in the inclined guide groove and near the axis of the adjusting disc, one end of a first mounting shaft is elastically abutted to the inclined guide groove, when the adjusting disc rotates, the first mounting shaft is arranged from the first limit opening to one end of the second limit opening and gradually approaches the valve rod, the rotary driving piece is arranged on one side of the moving disc and is connected with the adjusting disc, and the rotary driving piece is used for driving the adjusting disc to rotate on one side of the moving disc; the elastic traction assembly is arranged on one side of the movable disc and elastically abutted to the inclined guide groove, the elastic traction assembly comprises a tension traction piece and a synchronous belt, the tension traction piece is arranged on one side of the movable disc along the circumferential direction of the valve rod, the synchronous belt is wound on the tension traction piece, and the first installation shaft is bridged on the outer surface of the synchronous belt.
Preferably, the rotary driving member includes a servo motor provided at one side of the moving disc, a gear coaxially fixedly provided on an output shaft of the servo motor, and an arc-shaped rack coaxially provided on a circumferential surface of the adjusting disc, the gear being engaged with the arc-shaped rack.
Preferably, the tension traction piece comprises a mounting seat, a second mounting shaft, a tension wheel and a tension spring, wherein the mounting seat is arranged on the movable disc in a sliding manner along the radial direction of the valve rod, the second mounting shaft is arranged on the mounting seat and is parallel to the valve rod, the tension wheel is coaxially arranged on the second mounting shaft, and two ends of the tension spring are fixedly connected with the mounting seat and the movable disc respectively.
Preferably, the tension pulley is coaxially and rotatably arranged on the second mounting shaft; the tension traction piece further comprises an internal thread ring, a disc spring and a damping ring, wherein the internal thread ring is arranged at the outer end of the tension wheel and is in threaded connection with the second installation shaft, the damping ring is arranged at the inner end of the tension wheel and is in sliding fit with the second installation shaft, and the disc spring is sleeved on the second installation shaft and is located between the damping ring and the installation seat.
Preferably, the air pressure guiding assembly comprises a sealing cylinder, a piston, a plug rod and an air pressure gauge, wherein the sealing cylinder is arranged on one side of the movable disc, an air supplementing port is arranged at one end, far away from the axis of the valve rod, of the sealing cylinder, the piston is arranged in the sealing cylinder in a sliding manner along the moving direction of the movable seat, the sealing cylinder is divided into a first air cavity and a second air cavity by the piston, the first air cavity is communicated with the air supplementing port, the plug rod penetrates through the other end of the sealing cylinder and is in sliding fit with the other end of the sealing cylinder, the inner end of the plug rod is fixedly connected with the piston, the outer end of the plug rod is fixedly connected with the movable seat, and the air pressure gauge is arranged on the sealing cylinder and is connected with the first air cavity.
Preferably, the air pressure guiding assembly further comprises a connecting pipe and a one-way valve, a first connecting port communicated with the first air cavity and a second connecting port communicated with the second air cavity are arranged on the sealing cylinder, two ends of the connecting pipe are respectively communicated with the first connecting port and the second connecting port, the one-way valve is arranged on the connecting pipe, and air in the second air cavity can flow into the first air cavity through the one-way valve.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the grinding wheel can be guided to move along the length direction of the valve rod after being abutted against the rotating valve rod under constant pressure through the air pressure guiding assembly, so that the grinding wheel can uniformly grind the valve rods with different diameter sections, and the machining efficiency and the machining precision are higher.
Drawings
Fig. 1 is a perspective view of a sectional type self-adaptive polishing device for valve rod processing in an operating state.
Fig. 2 is a perspective cross-sectional view of a segmented adaptive polishing device for valve stem machining in an operating state.
Fig. 3 is a partial enlarged view at a of fig. 2.
Fig. 4 is a perspective view of a segmented adaptive grinding device for valve stem machining.
Fig. 5 is a partial perspective exploded view of a segmented adaptive grinding apparatus for valve stem machining.
Fig. 6 is a partial enlarged view at B of fig. 5.
Fig. 7 is a perspective view of a mobile disc and grinding wheel in a segmented adaptive grinding apparatus for valve stem machining.
FIG. 8 is a perspective view of an air pressure guide assembly of a segmented adaptive grinding apparatus for valve stem machining.
FIG. 9 is an elevation view of an air pressure guide assembly of a segmented adaptive grinding apparatus for valve stem machining.
Fig. 10 is a cross-sectional view at section C-C of fig. 9.
The reference numerals in the figures are:
1-a valve rod;
2-jacking columns;
3-moving the disc;
4-grinding wheel;
5-an air pressure guiding assembly;
51-a seal cartridge;
511-a make-up port;
512-a first connection interface;
513-a second connection port;
52-a piston;
53-stopper rod;
54-barometer;
55-connecting pipes;
56-a one-way valve;
61-adjusting disk;
611-inclined guide grooves;
612—a first limiting port;
613-a second limit port;
614-arc grooves;
621-a servo motor;
622-gear;
623-arc racks;
63-positioning columns;
631-locating pins;
64-limiting rings;
71-a mobile seat;
72-a first mounting shaft;
73-bearing;
8-an elastic traction assembly;
811-a mounting block;
812-a second mounting shaft;
813-a tension pulley;
814-tension spring;
815-an internal thread turn;
816-disc springs;
817-damping rings;
82-synchronous belt.
Detailed Description
The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
As shown in fig. 1 and 2, the present invention provides:
the utility model provides a valve rod 1 processing is with sectional type self-adaptation grinding device, includes coaxial butt at the both ends of valve rod 1 and can drive its rotatory jack-prop 2, still include can follow the removal dish 3 that valve rod 1 length direction moved, and set up in the removal dish 3 one side and can follow the radial removal of valve rod 1 grinding wheel 4, and be used for driving grinding wheel 4 with invariable pressure butt be in the pneumatic guide subassembly 5 on the valve rod 1 periphery, be provided with on the removal dish 3 and supply the jack-prop 2 and the first mouth of dodging that valve rod 1 passed, under the operating condition, pneumatic guide subassembly 5 guide grinding wheel 4 is with invariable pressure butt back along the length direction removal of valve rod 1 on rotatory valve rod 1.
The valve rod 1 is coaxially clamped between the two jacking columns 2, the polishing device further comprises a rotary driver for driving the jacking columns 2 to rotate, and after the rotary driver is started, the valve rod 1 can rotate in the horizontal direction under the condition that two ends of the valve rod 1 are abutted.
The diameter of the first avoiding opening is larger than the diameters of the jack post 2 and the valve rod 1, the movable disc 3 can move along the axial direction of the movable disc relative to the valve rod 1, in the process, the air pressure guide assembly 5 is started, the polishing wheel 4 is abutted to the circumferential surface of the valve rod 1 along the radial direction of the valve rod 1, during machining, the polishing wheel 4 is abutted to the circumferential surface of the maximum diameter end of the valve rod 1 first, when the valve rod 1 rotates, the polishing wheel 4 can polish the circumferential surface of the maximum diameter section of the valve rod 1, after the movable disc 3 moves and the polishing wheel 4 slides to the smaller diameter section of the valve rod 1 from the circumferential surface of the maximum diameter section, the distance between the polishing wheel 4 and the axis of the valve rod 1 is reduced, and under the action of the air pressure guide assembly 5, the pressure of the polishing wheel 4 on the smaller diameter section of the valve rod 1 is identical to the pressure on the valve rod 1 section, so that the polishing depth of the polishing wheel 4 can be shallow due to the reduction of the pressure of the polishing wheel 4.
According to the embodiment, the grinding wheel 4 can be guided to be abutted on the rotating valve rod 1 under constant pressure through the air pressure guiding assembly 5 and then move along the length direction of the valve rod 1, so that the grinding wheel 4 can uniformly grind the valve rods 1 with different diameter sections, and the machining efficiency and the machining precision are higher.
As shown in fig. 2, the polishing device further includes an adjusting assembly, where the adjusting assembly is disposed on one side of the moving disc 3 and is connected with the polishing wheel 4, and the adjusting assembly can drive the polishing wheel 4 to move along the radial direction of the valve rod 1 and make it abut against the polishing wheel 4, and the adjusting assembly has a second avoiding opening through which the jack post 2 and the valve rod 1 can pass.
For making grinding wheel 4 can the butt on not unidimensional valve rod 1 after, rethread atmospheric pressure guiding component 5 will grind wheel 4 on the periphery of valve rod 1 with invariable pressure butt, set up adjusting part in one side of movable disk 3, can adjust the interval of grinding wheel 4 and valve rod 1 through adjusting part, grinding wheel 4 can exert certain pressure to valve rod 1 simultaneously under atmospheric pressure guiding component 5's effect, and then can effectively polish different diameter valve rod 1.
As shown in fig. 8 and 9, there are at least two grinding wheels 4, and the grinding wheels 4 are circumferentially arranged at one side of the movable disk 3; one side of the movable disk 3 is provided with a movable assembly, the movable assembly comprises a movable seat 71 and a first mounting shaft 72, the movable seat 71 is slidably arranged on one side of the movable disk 3 along the radial direction of the valve rod 1, the first mounting shaft 72 is arranged on the movable seat 71, the first mounting shaft 72 is parallel to the valve rod 1, and the polishing wheel 4 is coaxially arranged on the first mounting shaft 72.
At least two grinding wheels 4 are arranged, so that the grinding wheels 4 can apply uniform force to the valve rod 1, bending of the valve rod 1 caused by single-side stress is prevented, the movable seat 71 is arranged on one side of the movable disc 3 in a sliding manner along the radial direction of the valve rod 1, the first mounting shaft 72 is arranged on the movable seat 71 in parallel with the valve rod 1, the grinding wheels 4 arranged on the first mounting shaft 72 can move along the radial direction of the valve rod 1, and the adjusting assembly can adjust the distance between the grinding wheels 4 and the valve rod 1 stably.
As shown in fig. 4, 5 and 6, the adjusting assembly includes an adjusting disc 61 and a rotary driving member, the adjusting disc 61 is rotatably disposed on one side of the moving disc 3 coaxially with the valve rod 1, the second avoiding opening is located at a central position of the adjusting disc 61, the second avoiding opening has an inclined guide groove 611 circumferentially arranged along the second avoiding opening, a first limiting opening 612 located at the inclined guide groove 611 and far from an axis of the adjusting disc 61, and a second limiting opening 613 located at the inclined guide groove 611 and near to the axis of the adjusting disc 61, one end of the first mounting shaft 72 elastically abuts against the inclined guide groove 611, when the adjusting disc 61 rotates, the first mounting shaft 72 is disposed on one side of the moving disc 3 and gradually near to the valve rod 1 from the first limiting opening 612 to the second limiting opening 613, and the rotary driving member is used for driving the adjusting disc 61 to rotate on one side of the moving disc 3.
The adjusting disk 61 is provided with an arc-shaped groove 614 circumferentially arranged along the adjusting disk 61, the adjusting assembly further comprises a positioning column 63 and a limiting ring 64, the positioning column 63 is arranged on one side of the moving disk 3 along the circumferential direction of the valve rod 1, the positioning column 63 is parallel to the valve rod 1, the diameter of the positioning column 63 is larger than the width of the arc-shaped groove 614, one end of the positioning column 63, which faces the adjusting disk 61, is provided with a positioning pin 631, the positioning pin 631 penetrates through the arc-shaped groove 614 and is in sliding fit with the arc-shaped groove 614, the limiting ring 64 is coaxially arranged on the positioning column 63 and is located on one side of the adjusting disk 61, and the adjusting disk 61 rotates between the limiting ring 64 and the positioning column 63.
The bearing 73 is arranged at the sliding end of the first mounting shaft 72 and the inclined guide groove 611, the first mounting shaft 72 is in rolling fit with the inclined guide groove 611 through the bearing 73, so that friction force between the first mounting shaft 72 and the inclined guide groove 611 is reduced, abrasion of the first mounting shaft 72 when sliding on the inclined guide groove 611 is avoided, feeding strokes of a plurality of grinding wheels 4 are the same, and grinding precision of the grinding wheels 4 is further improved.
In the initial state, one end of the first installation shaft 72 is located at the first limiting opening 612, when the distance between the grinding wheel 4 and the valve rod 1 needs to be adjusted, after the rotary driving piece is started, the adjusting disc 61 rotates at a certain angle on one side of the moving disc 3, so that one end of the first installation shaft 72 is located from the first limiting opening 612 to one end of the second limiting opening 613, and under the action of the inclined guide groove 611, the first installation shaft 72 is close to the valve rod 1 along the radial direction of the valve rod 1, so that the grinding wheel 4 can be driven to be abutted on the circumferential surface of the valve rod 1 along the radial direction of the valve rod 1.
As shown in fig. 5, the rotary driving member includes a servo motor 621, a gear 622, and an arc-shaped rack 623, the servo motor 621 is provided at one side of the moving disk 3, the gear 622 is coaxially and fixedly provided on an output shaft of the servo motor 621, the arc-shaped rack 623 is coaxially provided on a circumferential surface of the regulating disk 61, and the gear 622 and the arc-shaped rack 623 are engaged.
When the adjustment disc 61 needs to be guided to rotate relative to the moving disc 3, the servo motor 621 is started, so that the output shaft of the servo motor 621 can drive the gear 622 to rotate, and the arc-shaped rack 623 is coaxially arranged on the circumferential surface of the adjustment disc 61 and meshed with the gear 622, so that after the servo motor 621 is started, the adjustment disc 61 can rotate at a certain angle on one side of the moving disc 3, and the distance between the first mounting shaft 72 and the valve rod 1 can be adjusted.
As shown in fig. 7, an elastic traction assembly 8 for elastically abutting the first mounting shaft 72 on the inclined guide groove 611 is further disposed on one side of the movable disk 3, the elastic traction assembly 8 includes a tension traction member and a synchronous belt 82, the tension traction member is disposed on one side of the movable disk 3 along the circumferential direction of the valve rod 1, the synchronous belt 82 is wound on the tension traction member, and the first mounting shaft 72 is bridged on the outer surface of the synchronous belt 82.
In order to enable the first installation shaft 72 to be elastically abutted on the inclined guide groove 611, a tension traction member is arranged on one side of the movable disc 3, and the synchronous belt 82 is wound on the tension traction member, so that the first installation shaft 72 is bridged on the outer surface of the synchronous belt 82, the tension traction member can always tighten the synchronous belt 82, the tightened synchronous belt 82 can enable the first installation shaft 72 to be elastically abutted on the inclined guide groove 611, and when the adjusting disc 61 is reset, the first installation shaft 72 slides on the inclined guide groove 611 under the action of the synchronous belt 82 and moves into the first limiting opening 612.
As shown in fig. 3, the tension traction member includes a mounting seat 811, a second mounting shaft 812, a tension wheel 813 and a tension spring 814, wherein the mounting seat 811 is slidably disposed on the movable disk 3 along the radial direction of the valve rod 1, the second mounting shaft 812 is disposed on the mounting seat 811, the second mounting shaft 812 is parallel to the valve rod 1, the tension wheel 813 is coaxially disposed on the second mounting shaft 812, and two ends of the tension spring 814 are fixedly connected with the mounting seat 811 and the movable disk 3 respectively.
In order to enable the timing belt 82 to be always tightened, a mounting seat 811 is slidably provided on one side of the movable disk 3 in the radial direction of the valve stem 1, a second mounting shaft 812 is provided on the mounting seat 811 in parallel with the valve stem 1, a tension pulley 813 is provided on the second mounting shaft 812, and both ends of a tension spring 814 are fixedly connected with the mounting seat 811 and the movable disk 3, respectively, such that the tension pulley 813 abuts against the inner surface of the timing belt 82 under tension, whereby the timing belt 82 can be tightened on the first mounting shaft 72.
As shown in fig. 3, the tension pulley 813 is coaxially rotatably provided on the second mounting shaft 812; the tension traction piece further comprises an internal thread ring 815, a disc spring 816 and a damping ring 817, wherein the internal thread ring 815 is arranged at the outer end of the tension wheel 813 and is in threaded connection with the second mounting shaft 812, the damping ring 817 is arranged at the inner end of the tension wheel 813 and is in sliding fit with the second mounting shaft 812, and the disc spring 816 is sleeved on the second mounting shaft 812 and is located between the damping ring 817 and the mounting seat 811.
For making grinding wheel 4 can exert frictional force to valve rod 1, adjust the frictional force of tension wheel 813 and second installation axle 812, through relative second installation axle 812 rotation internal thread circle 815, with this interval of adjusting tension wheel and mount pad 811, make damping circle 817 under the effect of dish spring 816 elasticity butt in the one end of tension wheel 813, thereby can adjust the frictional force of damping circle 817 to the tension wheel, and then adjust the frictional force of grinding wheel 4 to valve rod 1 through hold-in range 82 synchronization, make grinding wheel 4 can even wearing and tearing, avoid grinding wheel 4 rotation and can't polish valve rod 1.
As shown in fig. 10, the air pressure guiding assembly 5 includes a sealing cylinder 51, a piston 52, a plug rod 53 and an air pressure gauge 54, the sealing cylinder 51 is disposed on one side of the moving disc 3, an air compensating port 511 is disposed at one end of the sealing cylinder 51 far away from the axis of the valve rod 1, the piston 52 is slidably disposed in the sealing cylinder 51 along the moving direction of the moving seat 71, the sealing cylinder 51 is divided into a first air cavity and a second air cavity by the piston 52, the first air cavity is communicated with the air compensating port 511, the plug rod 53 penetrates through the other end of the sealing cylinder 51 and is slidably matched with the other end, an inner end of the plug rod 53 is fixedly connected with the piston 52, an outer end of the plug rod 53 is fixedly connected with the moving seat 71, and the air pressure gauge 54 is disposed on the sealing cylinder 51 and is connected with the first air cavity.
After the grinding wheel 4 is abutted against the circumferential surface of the valve rod 1 through the adjusting component, air is filled into the first air cavity through the air supplementing port 511, under the pressure of the first air cavity, the piston 52 and the plug rod 53 move relative to the sealing cylinder 51, so that the grinding wheel 4 can be abutted against the circumferential surface of the valve rod 1 under the action of certain pressure, when the grinding wheel 4 moves from the large diameter section to the small diameter section of the valve rod 1, the piston 52 and the plug rod 53 slide in the sealing cylinder 51, so that the pressure in the first air cavity is reduced, the air supplementing port 511 is continuously supplemented through the air pressure gauge 54, the pressure in the first air cavity is ensured to be constant, and the grinding wheel 4 can be abutted against the valve rod 1 with different diameter sections under constant pressure.
As shown in fig. 10, the air pressure guiding assembly 5 further includes a connecting pipe 55 and a check valve 56, the sealing cylinder 51 is provided with a first connecting port 512 communicating with the first air cavity and a second connecting port 513 communicating with the second air cavity, two ends of the connecting pipe 55 are respectively communicated with the first connecting port 512 and the second connecting port 513, the check valve 56 is disposed on the connecting pipe 55, and air in the second air cavity can flow into the first air cavity through the check valve 56.
The first connecting port 512 and the second connecting port 513 are connected through the connecting pipe 55, and the check valve 56 is provided on the connecting pipe 55, when the piston 52 moves in the sealing cylinder 51, the volume of the first air chamber increases, the volume of the second air chamber decreases, so that the pressure in the second air chamber increases, and the gas in the second air chamber flows into the first air chamber through the check valve 56, thereby ensuring the constant pressure in the first air chamber, and further enabling the grinding wheel 4 to abut on the circumferential surface of the valve rod 1 with constant pressure.
The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (6)
1. The sectional type self-adaptive polishing device for valve rod machining comprises jacking columns (2) which are coaxially abutted to two ends of a valve rod (1) and can drive the jacking columns to rotate, and is characterized by further comprising a movable disc (3) which can move along the length direction of the valve rod (1), a polishing wheel (4) which is arranged on one side of the movable disc (3) and can move along the radial direction of the valve rod (1), and an air pressure guiding assembly (5) which is used for driving the polishing wheel (4) to be abutted to the circumferential surface of the valve rod (1) under constant pressure, wherein a first avoidance opening through which the jacking columns (2) and the valve rod (1) can pass is formed in the movable disc (3), and in an operating state, the air pressure guiding assembly (5) guides the polishing wheel (4) to be abutted to the rotating valve rod (1) under constant pressure and then move along the length direction of the valve rod (1); the polishing device further comprises an adjusting assembly, the adjusting assembly is arranged on one side of the movable disc (3) and is connected with the polishing wheel (4), the adjusting assembly can drive the polishing wheel (4) to move along the radial direction of the valve rod (1) and enable the polishing wheel to be abutted against the polishing wheel (4), and the adjusting assembly is provided with a second avoidance opening through which the jacking column (2) and the valve rod (1) can pass; at least two grinding wheels (4) are arranged, and the grinding wheels (4) are circumferentially arranged on one side of the movable disc (3); a moving assembly is arranged on one side of the moving disc (3), the moving assembly comprises a moving seat (71) and a first mounting shaft (72), the moving seat (71) is arranged on one side of the moving disc (3) in a sliding manner along the radial direction of the valve rod (1), the first mounting shaft (72) is arranged on the moving seat (71), the first mounting shaft (72) is parallel to the valve rod (1), and the polishing wheel (4) is coaxially arranged on the first mounting shaft (72); the adjusting assembly comprises an adjusting disc (61) and a rotary driving piece, the adjusting disc (61) is coaxially and rotatably arranged on one side of a moving disc (3) with a valve rod (1), the second avoiding opening is arranged at the center position of the adjusting disc (61), the second avoiding opening is provided with an inclined guide groove (611) which is circumferentially arranged along the second avoiding opening, a first limit opening (612) which is arranged at the inclined guide groove (611) and is far away from the axis of the adjusting disc (61), and a second limit opening (613) which is arranged at the inclined guide groove (611) and is close to the axis of the adjusting disc (61), one end of a first mounting shaft (72) is elastically abutted against the inclined guide groove (611), and when the adjusting disc (61) rotates, the first mounting shaft (72) is arranged from one end of the first limit opening (612) to one end of the second limit opening (613) and gradually approaches the valve rod (1), and the rotary driving piece is arranged on one side of the moving disc (3) and is connected with the adjusting disc (61), and the rotary driving piece is used for driving the adjusting disc (61) to rotate on one side of the moving disc (3).
One side of the movable disc (3) is further provided with an elastic traction assembly (8) which is used for elastically abutting the first mounting shaft (72) on the inclined guide groove (611), the elastic traction assembly (8) comprises a tension traction piece and a synchronous belt (82), the tension traction piece is arranged on one side of the movable disc (3) along the circumferential direction of the valve rod (1), the synchronous belt (82) is wound on the tension traction piece, and the first mounting shaft (72) is bridged on the outer surface of the synchronous belt (82).
2. The segmented self-adaptive polishing device for valve rod machining according to claim 1, wherein the rotary driving piece comprises a servo motor (621), a gear (622) and an arc-shaped rack (623), the servo motor (621) is arranged on one side of the movable disc (3), the gear (622) is coaxially and fixedly arranged on an output shaft of the servo motor (621), the arc-shaped rack (623) is coaxially arranged on the circumferential surface of the adjusting disc (61), and the gear (622) is meshed with the arc-shaped rack (623).
3. The sectional type self-adaptive polishing device for valve rod machining according to claim 1, wherein the tension traction piece comprises a mounting seat (811), a second mounting shaft (812), a tension wheel (813) and a tension spring (814), the mounting seat (811) is arranged on the movable disc (3) in a sliding manner along the radial direction of the valve rod (1), the second mounting shaft (812) is arranged on the mounting seat (811), the second mounting shaft (812) is parallel to the valve rod (1), the tension wheel (813) is coaxially arranged on the second mounting shaft (812), and two ends of the tension spring (814) are fixedly connected with the mounting seat (811) and the movable disc (3) respectively.
4. A segmented adaptive grinding device for valve stem machining according to claim 3, characterized in that the tension wheel (813) is coaxially and rotatably arranged on the second mounting shaft (812); the tension traction piece further comprises an internal thread ring (815), a disc spring (816) and a damping ring (817), wherein the internal thread ring (815) is arranged at the outer end of the tension wheel (813) and is in threaded connection with the second mounting shaft (812), the damping ring (817) is arranged at the inner end of the tension wheel (813) and is in sliding fit with the second mounting shaft (812), and the disc spring (816) is sleeved on the second mounting shaft (812) and is located between the damping ring (817) and the mounting seat (811).
5. A segmented adaptive polishing device for valve stem processing according to any one of claims 1-4, characterized in that the air pressure guiding assembly (5) comprises a sealing cylinder (51), a piston (52), a plug rod (53) and an air pressure gauge (54), the sealing cylinder (51) is arranged at one side of the movable disc (3), one end of the sealing cylinder (51) far away from the axis of the valve stem (1) is provided with an air supplementing opening (511), the piston (52) is slidingly arranged in the sealing cylinder (51) along the moving direction of the movable seat (71), the piston (52) divides the sealing cylinder (51) into a first air cavity and a second air cavity, the first air cavity is communicated with the air supplementing opening (511), the plug rod (53) penetrates through the other end of the sealing cylinder (51) and is in sliding fit with the sealing cylinder, the inner end of the plug rod (53) is fixedly connected with the piston (52), the outer end of the plug rod (53) is fixedly connected with the movable seat (71), and the air pressure gauge (54) is arranged on the sealing cylinder (51) and is connected with the first air pressure cavity.
6. The sectional type self-adaptive polishing device for valve rod machining according to claim 5, wherein the air pressure guiding assembly (5) further comprises a connecting pipe (55) and a one-way valve (56), a first connecting port (512) communicated with the first air cavity and a second connecting port (513) communicated with the second air cavity are arranged on the sealing cylinder (51), two ends of the connecting pipe (55) are respectively communicated with the first connecting port (512) and the second connecting port (513), the one-way valve (56) is arranged on the connecting pipe (55), and air in the second air cavity can flow into the first air cavity through the one-way valve (56).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311193061.XA CN116922170B (en) | 2023-09-15 | 2023-09-15 | Sectional type self-adaptation grinding device is used in valve rod processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311193061.XA CN116922170B (en) | 2023-09-15 | 2023-09-15 | Sectional type self-adaptation grinding device is used in valve rod processing |
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| CN116922170A CN116922170A (en) | 2023-10-24 |
| CN116922170B true CN116922170B (en) | 2023-12-22 |
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| CN202311193061.XA Active CN116922170B (en) | 2023-09-15 | 2023-09-15 | Sectional type self-adaptation grinding device is used in valve rod processing |
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| CN115673886A (en) * | 2022-09-30 | 2023-02-03 | 无锡市瑞澳矿业科技有限公司 | High-wear-resistance rubber hose polishing device for conveying ore pulp and using method thereof |
| CN115741265A (en) * | 2022-12-13 | 2023-03-07 | 上海好杰机械设备制造有限公司 | Columnar workpiece polishing device |
| CN218836923U (en) * | 2022-12-23 | 2023-04-11 | 昆山鸿永峻精密五金电子科技有限公司 | Clamp with self-limiting function for metal processing |
| CN218856377U (en) * | 2022-11-15 | 2023-04-14 | 马鞍山市莱能节能科技有限公司 | Polisher is used in axletree production |
| CN116276346A (en) * | 2023-01-13 | 2023-06-23 | 中山市誉胜智能科技有限公司 | Grinding device for guide rail surface of numerical control machine tool body |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112405270A (en) * | 2020-11-18 | 2021-02-26 | 常州艾肯智造科技有限公司 | Pipeline connecting piece forming processing machinery |
| CN217756041U (en) * | 2022-06-10 | 2022-11-08 | 昆山宇昕和电子科技有限公司 | Tension-adjustable winding device for carrier tape processing |
| CN114986270A (en) * | 2022-06-28 | 2022-09-02 | 戴闻起 | Round tube metal grinding device for production of fitness equipment |
| CN115673886A (en) * | 2022-09-30 | 2023-02-03 | 无锡市瑞澳矿业科技有限公司 | High-wear-resistance rubber hose polishing device for conveying ore pulp and using method thereof |
| CN218856377U (en) * | 2022-11-15 | 2023-04-14 | 马鞍山市莱能节能科技有限公司 | Polisher is used in axletree production |
| CN115741265A (en) * | 2022-12-13 | 2023-03-07 | 上海好杰机械设备制造有限公司 | Columnar workpiece polishing device |
| CN218836923U (en) * | 2022-12-23 | 2023-04-11 | 昆山鸿永峻精密五金电子科技有限公司 | Clamp with self-limiting function for metal processing |
| CN116276346A (en) * | 2023-01-13 | 2023-06-23 | 中山市誉胜智能科技有限公司 | Grinding device for guide rail surface of numerical control machine tool body |
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|---|---|
| CN116922170A (en) | 2023-10-24 |
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