CN112372465A

CN112372465A - Automatic grinding equipment for valve inner cavity and grinding process thereof

Info

Publication number: CN112372465A
Application number: CN202011163199.1A
Authority: CN
Inventors: 夏轩; 陈浩; 徐林章; 余建丰
Original assignee: Zhejiang Hengnuo Valve Manufacturing Co ltd
Current assignee: Zhejiang Hengnuo Valve Manufacturing Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-02-19
Anticipated expiration: 2040-10-27
Also published as: CN112372465B

Abstract

The utility model provides an automatic grinding equipment of valve inner chamber, which comprises a base, be equipped with vertical support column on the base, be equipped with the chuck on the base, be equipped with a pair of first guide rail and first slider on the vertical support column, the outside of first guide rail is equipped with first supporting shoe, be equipped with first step motor on the vertical support column, be equipped with second guide rail and second slider on the first supporting shoe, be equipped with the second supporting shoe on the first supporting shoe, be equipped with the motor cabinet on the second supporting shoe, be equipped with high-speed spindle motor on the motor cabinet, be equipped with the emery wheel on the high-speed spindle motor, be equipped with second step motor on the first supporting shoe, the motor cabinet side is equipped with stock and weight, be equipped with the cylinder on the motor cabinet. An automatic grinding process for an inner cavity of a valve comprises the following steps: A. loading, B, correcting position, C, grinding inner cavity, D, removing scrap iron, E, and discharging finished product. The invention can automatically grind and smooth the inner cavity of the valve and reduce the resistance of the inner cavity of the valve body to fluid.

Description

Automatic grinding equipment for valve inner cavity and grinding process thereof

Technical Field

The invention relates to equipment and a process, in particular to automatic grinding equipment for an inner cavity of a valve and a grinding process thereof.

Background

The valve is a control part in the fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like; valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems.

In the course of working at the valve, need to polish grinding polishing to the valve inner chamber and handle, because traditional valve body all adopts cast form to make, the valve inner chamber is not smooth, can greatly increase the fluid running resistance, so need carry out grinding smooth processing to the valve inner chamber, thereby reduce the fluid running resistance, however, do not have the professional equipment that carries out the grinding to the valve inner chamber in the existing, consequently polish by the handheld polisher of the workman to the grinding polishing of valve body inner chamber mostly, but this kind of mode of polishing efficiency is extremely low and easily takes place the incident, cause the injury to the workman.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides the automatic valve inner cavity grinding equipment capable of automatically grinding the inner cavity of the valve and the grinding process thereof, and meets the requirements of high grinding efficiency of the inner cavity of the valve, difficulty in occurrence of safety accidents and low cost.

The invention adopts the technical scheme for solving the technical problems that: the automatic grinding equipment for the inner cavity of the valve comprises a base, wherein a vertical supporting column is fixed on the side edge of the base, a chuck is fixed on the base, a pair of first guide rails which are vertically and oppositely arranged are fixed on the vertical supporting column, first slide blocks are connected to the two first guide rails in a sliding manner, first supporting blocks fixed on the two first slide blocks are arranged on the outer sides of the first guide rails, a first step motor for driving the first supporting blocks to move up and down along the Z direction is fixed at the top end of the vertical supporting column, second guide rails are respectively fixed at the top end and the side end of the first supporting block, second slide blocks are connected to the two second guide rails in a sliding manner, second supporting blocks fixed on the two second slide blocks are arranged on the outer sides of the first supporting blocks, a motor base is arranged on the outer sides of the second supporting blocks, a high-speed spindle motor is fixed on the motor base, a grinding wheel is fixed on a rotating shaft of the high-speed spindle motor, and a side edge of, Right reciprocating motion's second step motor, the side of motor cabinet is fixed with the stock, install the weight fixed through the fastener on the stock, the inboard of motor cabinet is fixed with the cylinder of rotation connection on the second supporting shoe, it has convex breach to open on the cylinder, the outside of second supporting shoe is fixed with and is used for the spacing swing stopper of motor cabinet swing angle with the cooperation of convex breach, first supporting shoe department is fixed with coolant liquid pipe, coolant liquid pipe's play liquid end is located the side direction of emery wheel. The chuck is used for clamping and fixing a valve workpiece; the first guide rail, the first sliding block, the first supporting block and the first stepping motor are used for driving the first supporting block to move up and down along the Z direction; the second guide rail, the second slide block, the second supporting block and the second stepping motor have the functions of moving the second supporting block along the X direction, so that the motor base fixed on the second supporting block can move along the Z direction and the X direction through the first stepping motor and the second stepping motor; the motor base, the high-speed spindle motor and the grinding wheel have the effects that the grinding wheel can be driven to rotate at a high speed, so that the inner cavity of the valve can be ground and smoothly operated, and the resistance effect of the inner cavity of the valve can be reduced; the long rod and the heavy hammer have the effects that the motor base can be driven to rotate anticlockwise to be attached to the position of the inner cavity of the valve, and further the inner cavity of the valve can be ground and smoothly operated, so that the motor base can passively swing left and right according to the protrusions and the recesses of the inner cavity of the valve to enable the grinding wheel to clean the unsmooth areas of the protrusions and the recesses, the position of the heavy hammer can be adjusted on the long rod, and the lateral pressure of the grinding wheel on the contour surface of the inner cavity of the valve can be adjusted; the cylinder, the arc-shaped notch and the swing limiting block have the functions of limiting the maximum swing angle of the motor base; the effect of coolant pipe here is, can let in the coolant liquid to the emery wheel not only can cool down when carrying out the grinding to the valve inner chamber, reduces the wearing and tearing of emery wheel, also can in time take away the iron fillings that the grinding got off, thereby can increase the smoothness of valve inner chamber.

Further perfect, be fixed with angle sensor on the second supporting shoe, be fixed with first synchronous pulley in angle sensor's the pivot, the inboard of motor cabinet is equipped with the second synchronous pulley of fixing on the cylinder, install the hold-in range between first synchronous pulley and the second synchronous pulley, the outside of base is equipped with the PLC switch board that contains the PLC controller, set up the switch on the PLC switch board, PLC controller and switch on the PLC switch board, first step motor, the second step motor, high-speed spindle motor, angle sensor line connection is together. The angle sensor, the first synchronous belt wheel, the second synchronous belt wheel and the synchronous belt have the effects that the swinging angle of the motor base when the motor base is driven can be provided for the PLC control cabinet, so that the position of the motor base can be compensated and moved through the second stepping motor, the swinging angle of the motor base is always controlled in a reasonable range, and the grinding amount of an inner cavity of the valve cannot be too much or too little; the PLC controller in the PLC control cabinet is an existing product on the market, the PLC controller in the scheme is a universal programmable logic controller on the market, and the universal brands such as Mitsubishi PLC, Schneider PLC, Nikon Unitronics, Taida PLC, Panasonic PLC and the like can be selected; in addition, the program setting of the PLC controller is basically consistent with the principle of a setting method passing through the market, and common technicians can set program instructions according to the requirements of processing speed and efficiency, so that the method is fast in aspect; the angle sensor is a product existing in the market, and can be selected from Shanghai Europe and pasture electronic technology Co., Ltd, Shanghai Huige technology development Co., Ltd, and the like.

Further perfection, the motor base is fixed with an outer cover covering the high-speed spindle motor. The outer cover has the function of protecting the high-speed spindle motor.

Further perfect, the base includes first body, and it has the first horizontal perforation of a set of interval equipartition setting to open on the first body, and vertical support column includes the second body, and it has the second horizontal hole of a set of interval equipartition setting to open on the second body. The first body, the first transverse through hole, the second body and the second transverse hole are used for greatly reducing the weight of the base and the weight of the vertical supporting column under the condition that the strength of the base and the strength of the vertical supporting column are not affected, so that the equipment is convenient to mount and transport.

Further perfection, the outside of base and vertical support post is fixed with the shell that entangles base and vertical support post, and shell department opens there is the opening, and shell department sliding connection has a pair of open and close door of opening and close the opening, is fixed with the door handle on two open and close doors. The shell, the opening and closing door and the door handle have the effects of sealing all parts, so that the risk of machining and grinding the inner cavity of the valve is reduced, the safety is improved, and the attractiveness is improved.

The scrap iron cleaning device comprises a first shell, a first hollow roller rotationally connected with iron is fixed on the first shell, a first fixed column fixed on the first shell is arranged in the first hollow roller, a pair of first sliding blocks which are oppositely arranged and slidably connected with the first shell are arranged on the outer side of the first hollow roller, a first shaft rod is fixed between the two first sliding blocks, a first elastic pressing wheel is rotationally connected with the first shaft rod, a first compression spring for pressing the first elastic pressing wheel towards the first hollow roller is arranged on the side part of the first sliding block, a first arc plate is fixed below the first hollow roller at intervals, a liquid inlet is arranged on the side end of the first shell, a first inclined plate fixed on the first arc plate and the first shell is arranged below the liquid inlet, a first scraper attached to the outer contour of the first hollow roller is arranged on the side part of the first hollow roller, be fixed with first electromagnetism iron layer on the outer profile face of fixed column, the both sides that lie in first scraper blade on the outer profile face of first fixed column do not have first electromagnetism iron layer, the drain pipe is installed to the bottom of first casing, first casing department installs and drives first hollow cylinder pivoted first servo motor, the top of base is equipped with the notch, the chuck is installed in the notch, install communicating pipe between notch and the inlet, PLC controller line connection in first electromagnetism iron layer and the PLC switch board. The scrap iron cleaning device has the functions of filtering the cutting fluid and recycling the cutting fluid, so that the cost is reduced; the working principle of the scrap iron cleaning device is as follows: the cutting fluid mixed with the scrap iron reaches the first shell through the fluid inlet and reaches the first arc plate through the first sloping plate, at the moment, the first electromagnet layer is synchronously started, thereby magnetizing the iron first hollow roller part area to generate magnetic force, adsorbing the iron chips in the cutting fluid to the first hollow roller, the first hollow roller is in a rotating state, can drive the adsorbed scrap iron to roll, and the first elastic pressing wheel is elastically pressed by the elasticity of the first compression spring, thereby avoiding the situation that some scrap irons fall off loosely, when the scrap irons pass through the two sides of the first scraper, because the two sides of the first scraper are not provided with the first electromagnet layer, the scrap iron on the outer contour surface of the first hollow roller gradually loses magnetic force, and the scrap iron absorbed by the lost magnetic force can be easily scraped off by the first scraper, so that clean and impurity-free cooling liquid can flow out of the liquid outlet pipe and can be reused; the first electromagnet layer generates magnetic force through electrification and is easy to control.

Further perfection, the outer side of the first scraper is provided with a material receiving frame. The material receiving frame is used for collecting the iron scraps which are adsorbed and separated in a centralized manner.

Further perfect, the lateral part of base is equipped with flourishing liquid case, installs the drawing liquid pump on the flourishing liquid case, and the suction end of drawing liquid pump is installed and is inserted the suction tube of flourishing liquid bottom of the case, and the output tube that communicates with the coolant liquid pipe is installed to the output of drawing liquid pump, and the intercommunication has the connecting pipe between drain pipe and the flourishing liquid case, and drawing liquid pump and PLC switch board line connection. The liquid containing box, the liquid pump, the suction pipe and the output pipe have the functions of recycling the cooling liquid; the work of the method is as follows: clean coolant liquid that flows through the connecting pipe can flow into containing liquid case, so, when needs spout the coolant liquid to the coolant liquid pipe, only need start the drawing liquid pump just can be located containing the clean coolant liquid of reuse in the liquid case and take out and spout from the coolant liquid pipe can.

The automatic grinding process for the inner cavity of the valve comprises the following steps:

A. charging: installing the valve at a chuck and clamping;

B. correcting the position: starting a first stepping motor to drive a first supporting block to move downwards, wherein the first supporting block moves downwards to synchronously drive a second supporting block to move downwards along the Z direction together, so that a grinding wheel is driven to move downwards to the side part of a valve runner port to stop, and then starting a second stepping motor to drive a second supporting block to move along the X direction, wherein a long rod and a heavy hammer can enable a high-speed spindle motor to deviate towards the inner cavity side of the valve and lean against the top end of the inner cavity of the valve;

C. grinding the inner cavity of the valve: starting a high-speed spindle motor and driving a grinding wheel to rotate at a high speed, starting a first stepping motor and synchronously driving a second supporting block to move downwards so as to grind the inner cavity of the valve smoothly, when the first stepping motor touches a recess or a bulge, a motor base can passively drive the second supporting block to deflect and rotate, so that the grinding wheel can grind the position of the smooth recess or bulge, and if the recess is too deep or the bulge is too large, the second stepping motor can be started to correct the position of the grinding wheel through the angle deviation of an angle sensor, so that the left and right swinging of the motor base is within a proper angle range;

D. scrap iron removal: when the inner cavity of the valve is ground, cutting fluid is continuously sprayed to flush away the ground chips, and the flushed chips are magnetically separated through the magnetic separator of the cutting fluid, so that the cutting fluid is clean, and the cutting fluid can be recycled;

E. discharging a finished product: and (4) loosening the chuck and taking the valve with the ground inner cavity out of the chuck for the finished product with the ground inner cavity.

The invention has the beneficial effects that: the invention has ingenious and reasonable structural design, utilizes the chuck to clamp and fix a workpiece, utilizes the first guide rail, the first slide block, the first supporting block and the first stepping motor to drive the first supporting block to move up and down along the Z direction, utilizes the second guide rail, the second slide block, the second supporting block and the second stepping motor to move the second supporting block along the X direction, so that a motor seat fixed on the second supporting block can move along the Z direction and the X direction through the first stepping motor and the second stepping motor, utilizes the motor seat, the high-speed spindle motor and the grinding wheel to drive the grinding wheel to rotate at high speed, thereby grinding and smoothing the inner cavity of the valve, reducing the resistance effect of the inner cavity of the valve, utilizes the long rod and the heavy hammer to drive the motor seat to rotate anticlockwise so as to be attached to the inner cavity of the valve, and then can carry on the grinding smooth operation to the valve cavity, thus the motor cabinet can be according to the valve cavity's arch, sunken come the passive horizontal hunting to make the emery wheel clear up the arch, the unsmooth area of depressed place, utilize cylinder, circular arc breach, swing stopper to carry on the limiting action to the swing maximum angle of the motor cabinet, utilize the coolant pipe to let in the coolant liquid, thus the emery wheel can not only lower the temperature when carrying on the grinding to the valve cavity, reduce the wearing and tearing of the emery wheel, can also take away the iron fillings that are ground off in time, thus can increase the smoothness of the valve cavity, the invention structural design is ingenious, rational, can carry on the automatic grinding smooth to the valve cavity, reduce the resistance of the valve body cavity to the fluid, worth popularizing and applying.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the present invention with the housing removed;

FIG. 3 is an oblique perspective view of the present invention with the housing and outer cover removed;

FIG. 4 is an enlarged view of a portion of the area A of FIG. 3;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a schematic structural view of the area of the iron scrap cleaning device in the present invention;

FIG. 7 is a schematic structural view of a scrap iron cleaning device according to the present invention;

FIG. 8 is a schematic view of the structure of the liquid containing tank area of the present invention.

Description of reference numerals: a base 1, a vertical support column 2, a chuck 3, a first guide rail 4, a first slide block 5, a first support block 6, a first stepping motor 7, a second guide rail 8, a second slide block 9, a second support block 10, a swing limit block 10-1, a motor base 11, an arc-shaped notch 11-1a, a second synchronous pulley 11-2, a high-speed spindle motor 12, a grinding wheel 13, a second stepping motor 14, a long rod 15, a heavy hammer 16, an angle sensor 17, a first synchronous pulley 17-1, a synchronous belt 18, a PLC control cabinet 19, a switch 19-1, an outer cover 20, a cooling liquid pipe 21, a shell 22, an opening 22-1, an opening and closing door 23, a door handle 23-1, an iron scrap cleaning device 24, a first shell 24-1, a first hollow roller 24-2, a first fixed column 24-3, a first slide block 24-4, a first shaft lever 24-5, the device comprises a first elastic pressing wheel 24-6, a first compression spring 24-7, a first arc plate 24-8, a first inclined plate 24-9, a first scraping plate 24-10, a first servo motor 24-11, a communicating pipe 24-12, a material receiving frame 25, a liquid containing box 26, a liquid pump 27, a suction pipe 28, an output pipe 29, a connecting pipe 30, a valve 31 and a valve inner cavity grinding surface 31 a.

Detailed Description

The invention will be further described with reference to the accompanying drawings in which:

with reference to the accompanying drawings: the automatic grinding equipment for the inner cavity of the valve comprises a base 1, wherein a vertical support column 2 is fixed on the side edge of the base 1, a chuck 3 is fixed on the base 1, a pair of first guide rails 4 which are vertically and oppositely arranged are fixed on the vertical support column 2, first sliding blocks 5 are respectively connected on the two first guide rails 4 in a sliding manner, a first support block 6 fixed on the two first sliding blocks 5 is arranged on the outer side of each first guide rail 4, a first stepping motor 7 for driving the first support block 6 to move up and down along the Z direction is fixed on the top end of the vertical support column 2, second guide rails 8 are respectively fixed on the top end and the side end of each first support block 6, second sliding blocks 9 are respectively connected on the two second guide rails 8 in a sliding manner, second support blocks 10 fixed on the two second sliding blocks 9 are arranged on the outer side of each first support block 6, a motor base 11 is arranged on the outer side of each second support block 10, and a high-speed, a grinding wheel 13 is fixed on a rotating shaft of the high-speed spindle motor 12, a second stepping motor 14 for driving the second supporting block 10 to reciprocate left and right in the X direction is fixed on the side edge of the first supporting block 6, a long rod 15 is fixed on the side edge of the motor base 11, a heavy hammer 16 fixed through a fastener is installed on the long rod 15, a cylinder 11-1 rotatably connected to the second supporting block 10 is fixed on the inner side of the motor base 11, an arc-shaped notch 11-1a is formed in the cylinder 11-1, a swing limiting block 10-1 matched with the arc-shaped notch 11-1a and used for limiting the swing angle of the motor base 11 is fixed on the outer side of the second supporting block 10, a cooling liquid pipe 21 is fixed at the position of the first supporting block 6, and the liquid outlet end of the cooling liquid pipe 21 is located on.

An angle sensor 17 is fixed on the second supporting block 10, a first synchronous belt wheel 17-1 is fixed on a rotating shaft of the angle sensor 17, a second synchronous belt wheel 11-2 fixed on the cylinder 11-1 is arranged on the inner side of the motor base 11, a synchronous belt 18 is installed between the first synchronous belt wheel 17-1 and the second synchronous belt wheel 11-2, a PLC control cabinet 19 containing a PLC controller is arranged on the outer side of the base 1, a switch 19-1 is arranged on the PLC control cabinet 19, and the PLC controller on the PLC control cabinet 19 is in line connection with the switch 19-1, the first stepping motor 7, the second stepping motor 14, the high-speed spindle motor 12 and the angle sensor 17.

A housing 20 for housing the high-speed spindle motor 12 is fixed to the motor base 11.

The base 1 comprises a first body 1-1, a group of first transverse through holes 1-1a are formed in the first body 1-1 at intervals and are uniformly distributed, the vertical supporting column 2 comprises a second body 2-1, and a group of second transverse holes 2-1a are formed in the second body 2-1 at intervals and are uniformly distributed.

The outer sides of the base 1 and the vertical supporting column 2 are fixed with a shell 22 which sleeves the base 1 and the vertical supporting column 2, the shell 22 is provided with an opening 22-1, the shell 22 is connected with a pair of opening and closing doors 23 which open and close the opening 22-1 in a sliding way, and the two opening and closing doors 23 are fixed with door handles 23-1.

The scrap iron cleaning device 24 is arranged at the base 1 and comprises a first shell 24-1, a first hollow roller 24-2 which is rotationally connected with iron is fixed on the first shell 24-1, a first fixed column 24-3 which is fixed on the first shell 24-1 is arranged in the first hollow roller 24-2, a pair of first sliding blocks 24-4 which are oppositely arranged and are connected with the first shell 24-1 in a sliding way are arranged at the outer side of the first hollow roller 24-2, a first shaft lever 24-5 is fixed between the two first sliding blocks 24-4, a first elastic pressure roller 24-6 is rotationally connected on the first shaft lever 24-5, a first compression spring 24-7 which presses the first elastic pressure roller 24-6 towards the first hollow roller 24-2 is arranged at the side part of the first sliding block 24-4, first arc plates 24-8 are fixed below the first hollow roller 24-2 at intervals, a liquid inlet 24-1a is arranged at the side end of the first shell 24-1, a first inclined plate 24-9 fixed at the first arc plate 24-8 and the first shell 24-1 is arranged below the liquid inlet 24-1a, a first scraper 24-10 attached to the outer contour of the first hollow roller 24-2 is arranged at the side part of the first hollow roller 24-2, a first electromagnet layer 24-3a is fixed on the outer contour surface of the fixed column 24-3, the first electromagnet layer 24-3a is not arranged at the two sides of the first scraper 24-10 on the outer contour surface of the first fixed column 24-3, a liquid outlet pipe 24-1b is arranged at the bottom end of the first shell 24-1, a first servo motor 24-11 for driving the first hollow roller 24-2 to rotate is arranged at the first shell 24-1, the top end of the base 1 is provided with a notch 1-2, the chuck 3 is arranged in the notch 1-2, a communicating pipe 24-12 is arranged between the notch 1-2 and the liquid inlet 24-1a, and the first electromagnet layer is connected with a PLC controller in a PLC control cabinet through a circuit.

The outer side of the first scraper 24-10 is provided with a receiving frame 25.

A liquid containing box 26 is arranged on the side portion of the base 1, a liquid drawing pump 27 is installed on the liquid containing box 26, a suction pipe 28 inserted into the bottom end of the liquid containing box 26 is installed at the suction end of the liquid drawing pump 27, an output pipe 29 communicated with the cooling liquid pipe 21 is installed at the output end of the liquid drawing pump 27, a connecting pipe 30 is communicated between the liquid outlet pipe 24-1b and the liquid containing box 26, and the liquid drawing pump 27 is connected with a PLC controller in the PLC control cabinet 19 through a circuit.

A. charging: the valve 31 is mounted at the chuck 3 and clamped;

B. correcting the position: starting a first stepping motor 7 to drive a first supporting block 6 to move downwards, wherein the first supporting block 6 moves downwards to synchronously drive a second supporting block 10 to move downwards along the Z direction together, so as to drive a grinding wheel 13 to move downwards to the side part of a flow passage of a valve 31 to stop, and then starting a second stepping motor 14 to drive the second supporting block 10 to move along the X direction, wherein the long rod 15 and the heavy hammer 16 can enable a high-speed spindle motor 12 to deviate towards the inner cavity side of the valve 31 and to be close to the top end of the inner cavity of the valve 31;

C. grinding the inner cavity of the valve: starting a high-speed spindle motor 12 and driving a grinding wheel 13 to rotate at a high speed, starting a first stepping motor 7 and synchronously driving a second supporting block 10 to move downwards so as to grind the inner cavity of the valve 31 smoothly, and when the valve meets a recess or a bulge, a motor base 11 can passively drive the valve to deflect and rotate, so that the grinding wheel 13 can grind the position of the smooth recess or bulge, and if the recess is too deep or the bulge is too large, the second stepping motor 14 can be started to correct the position of the grinding wheel 13, so that the left and right swings of the motor base 11 are within a proper angle range;

E. discharging a finished product: and (4) releasing the chuck 3 and taking the valve 31 with the ground inner cavity out of the chuck 3 for grinding the finished product of the inner cavity of the valve 31.

The working principle of the invention is as follows: firstly, the valve 32 is arranged at the chuck 3 and clamped, then, the switch 19-1 is started, the PLC in the PLC control cabinet 19 starts the first stepping motor 7 and drives the first supporting block 6 to move downwards, the first supporting block 6 moves downwards to synchronously drive the second supporting block 10 to move downwards along the Z direction, so as to drive the grinding wheel 13 to move downwards to the side part of the valve runner port and stop, then the second stepping motor 14 is started to drive the second supporting block 10 to move along the X direction, because the long rod 15 and the heavy hammer 16 can drive the high-speed spindle motor 12 to deviate towards the inner cavity side of the valve 31 and lean against the top end of the inner cavity of the valve 31, the high-speed spindle motor 12 is synchronously started and drives the grinding wheel 13 to rotate at a high speed, then the first stepping motor 7 is started again and synchronously drives the second supporting block 10 to move downwards, so as to grind the inner cavity of the valve 31 smoothly, when a sunken or raised area of the inner cavity of, the motor base 11 is passively driven to deflect and rotate, so that the grinding wheel 13 can grind a smooth concave or convex position along a concave or convex contour shape, if the concave or convex is too deep or large, a signal can be transmitted to a PLC (programmable logic controller) through the angle deviation of the angle sensor 17, the second stepping motor 14 is started to correct the position of the grinding wheel 13, the left and right swinging of the motor base 11 can swing within a reasonable angle range (usually within a +/-1 degree left and right swinging range), the grinding amount of the inner cavity of the valve is too large due to the too large swinging range, the working efficiency is reduced, the production cost is greatly increased (the purpose of grinding the inner cavity of the valve is to reduce the fluid resistance, only the inner cavity of the valve needs to be ground smoothly, the grinding and flattening operation on the concave or convex in the inner cavity of the valve is not needed), when the inner cavity of the valve 32 is ground, the cooling liquid pipe 21 is continuously utilized to spray cutting liquid, the grinded chips are washed away, and the washed chips are absorbed and recovered through the scrap iron cleaning device 24, so that the cutting fluid becomes clean, and the clean cutting fluid can be recycled (when the grinding wheel 13 of the device works, the whole body moves along a Z axis, the grinding force is adjusted by adjusting the position of the heavy hammer 16 on the long rod 15 to adjust the lever force arm, the grinding wheel 13 automatically moves up and down along with the shape of the inner cavity of a machined workpiece (valve) to drive the motor base 11 to swing left and right, the swing left and right of the motor base 11 is amplified to the angle sensor 17 through the angle of the synchronous belt 18 to output 4-20MA analog quantity signals to the control system, the control system sets the deflection angle range of the motor base 11, and the fluctuation of the grinding wheel 13 in the range can well solve the problem that the line contact recess grinding of the grinding wheel 13 cannot be carried out when the diameter of the small area recess of the inner, after the grinding wheel 13 deflects by a certain angle, the grinding wheel is changed into point contact from line contact to realize the grinding work of small-area depression, and after the system detects that the deflection angle exceeds a set range, the control system controls a second stepping motor of an X shaft in real time to realize forward and backward movement through PID (proportion integration differentiation) operation according to an analog quantity signal so as to compensate the problems of idle grinding and over-grinding of the grinding wheel 13 caused by the shape deviation of a workpiece; the automatic grinding device is ingenious and reasonable in structural design, can automatically grind and smooth the inner cavity of the valve, reduces the resistance of the inner cavity of the valve body to fluid, and is worthy of popularization and application.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides an automatic grinding equipment of valve inner chamber, includes base (1), characterized by: a vertical supporting column (2) is fixed on the side edge of the base (1), a chuck (3) is fixed on the base (1), a pair of first guide rails (4) which are vertically and oppositely arranged is fixed on the vertical supporting column (2), first sliding blocks (5) are connected to the two first guide rails (4) in a sliding manner, first supporting blocks (6) which are fixed on the two first sliding blocks (5) are arranged on the outer sides of the first guide rails (4), a first stepping motor (7) which drives the first supporting blocks (6) to move up and down along the Z direction is fixed on the top end of the vertical supporting column (2), second guide rails (8) are respectively fixed on the top end and the side end of each first supporting block (6), second sliding blocks (9) are connected to the two second guide rails (8) in a sliding manner, second supporting blocks (10) which are fixed on the two second sliding blocks (9) are arranged on the outer sides of the first supporting blocks (6), a motor base (11) is arranged on the outer side of the second supporting block (10), a high-speed spindle motor (12) is fixed on the motor base (11), a grinding wheel (13) is fixed on a rotating shaft of the high-speed spindle motor (12), a second stepping motor (14) which drives the second supporting block (10) to reciprocate left and right in the X direction is fixed on the side of the first supporting block (6), a long rod (15) is fixed on the side of the motor base (11), a heavy hammer (16) fixed through a fastening piece is installed on the long rod (15), a cylinder (11-1) rotatably connected onto the second supporting block (10) is fixed on the inner side of the motor base (11), an arc-shaped notch (11-1a) is formed in the cylinder (11-1), and a swing limiting block (10-1) which is matched with the arc-shaped notch (11-1a) and used for limiting the swing angle of the motor base (11) is fixed on the outer side of the second supporting block (10) A cooling liquid pipe (21) is fixed at the first supporting block (6), and the liquid outlet end of the cooling liquid pipe (21) is located on the lateral side of the grinding wheel (13).

2. The automatic grinding device for the inner cavity of the valve according to claim 1, wherein: an angle sensor (17) is fixed on the second supporting block (10), a first synchronous pulley (17-1) is fixed on a rotating shaft of the angle sensor (17), a second synchronous belt wheel (11-2) fixed on the column (11-1) is arranged on the inner side of the motor base (11), a synchronous belt (18) is arranged between the first synchronous pulley (17-1) and the second synchronous pulley (11-2), a PLC control cabinet (19) comprising a PLC controller is arranged on the outer side of the base (1), the PLC control cabinet (19) is provided with a switch (19-1), and a PLC controller on the PLC control cabinet (19) is connected with the switch (19-1), the first stepping motor (7), the second stepping motor (14), the high-speed spindle motor (12) and the angle sensor (17) through lines.

3. The automatic grinding device for the inner cavity of the valve according to claim 1, wherein: and an outer cover (20) for covering the high-speed spindle motor (12) is fixed on the motor base (11).

4. The automatic grinding device for the inner cavity of the valve according to claim 1, wherein: the base (1) comprises a first body (1-1), a group of first transverse through holes (1-1a) are formed in the first body (1-1) at intervals and are uniformly distributed, the vertical supporting column (2) comprises a second body (2-1), and a group of second transverse through holes (2-1a) are formed in the second body (2-1) at intervals and are uniformly distributed.

5. The automatic grinding device for the inner cavity of the valve according to claim 2, wherein: the outer sides of the base (1) and the vertical supporting columns (2) are fixedly provided with shells (22) which are sleeved on the base (1) and the vertical supporting columns (2), the shells (22) are provided with openings (22-1), the shells (22) are connected with a pair of opening and closing doors (23) which open and close the openings (22-1) in a sliding mode, and door handles (23-1) are fixed on the two opening and closing doors (23).

6. The automatic grinding device for the inner cavity of the valve according to claim 5, wherein: the scrap iron cleaning device (24) is arranged at the position of the base (1), the scrap iron cleaning device (24) comprises a first shell (24-1), a first hollow roller (24-2) which is rotationally connected with iron is fixed on the first shell (24-1), a first fixed column (24-3) which is fixed on the first shell (24-1) is arranged in the first hollow roller (24-2), a pair of first sliding blocks (24-4) which are oppositely arranged and slidably connected to the first shell (24-1) are arranged on the outer side of the first hollow roller (24-2), a first shaft rod (24-5) is fixed between the two first sliding blocks (24-4), a first elastic pressing wheel (24-6) is rotationally connected to the first shaft rod (24-5), and a first elastic pressing wheel (24-6) is arranged on the side portion of the first sliding block (24-4) and presses the first elastic pressing wheel (24-6) towards the first hollow shaft The first compression spring (24-7) is pressed at the side of the roller (24-2), a first arc plate (24-8) is fixed below the first hollow roller (24-2) at intervals, a liquid inlet (24-1a) is formed in the side end of the first shell (24-1), a first inclined plate (24-9) fixed at the first arc plate (24-8) and the first shell (24-1) is arranged below the liquid inlet (24-1a), a first scraper (24-10) attached to the outer contour of the first hollow roller (24-2) is arranged at the side of the first hollow roller (24-2), a first electromagnet layer (24-3a) is fixed on the outer contour surface of the fixed column (24-3), and the first electromagnet layers (24-10) are not arranged at two sides of the first scraper (24-10) on the outer contour surface of the first fixed column (24-3) 3a) The liquid outlet pipe (24-1b) is installed at the bottom end of the first shell (24-1), a first servo motor (24-11) which drives the first hollow roller (24-2) to rotate is installed at the position of the first shell (24-1), a notch (1-2) is formed in the top end of the base (1), the chuck (3) is installed in the notch (1-2), a communicating pipe (24-12) is installed between the notch (1-2) and the liquid inlet (24-1a), and the first electromagnet layer (24-3a) is connected with a PLC controller in the PLC control cabinet (19) through a circuit.

7. The automatic grinding device for the inner cavity of the valve according to claim 6, wherein: and a material receiving frame (25) is arranged on the outer side of the first scraper (24-10).

8. The automatic grinding device for the inner cavity of the valve according to claim 6, wherein: the lateral part of base (1) is equipped with flourishing liquid case (26), install drawing liquid pump (27) on flourishing liquid case (26), suction end of drawing liquid pump (27) is installed and is inserted suction tube (28) flourishing liquid case (26) bottom, output tube (29) with coolant pipe (21) intercommunication are installed to the output of drawing liquid pump (27), the intercommunication has connecting pipe (30) between drain pipe (24-1b) and flourishing liquid case (26), PLC controller line connection in drawing liquid pump (27) and PLC switch board (19).

9. An automatic grinding process for an inner cavity of a valve is characterized by comprising the following steps:

A. charging: installing the valve at a chuck and clamping;