CN117655864A - Positioning system of vertical grinding machine - Google Patents

Abstract

The invention relates to a positioning system of a vertical grinder, which comprises a back block, a lifting plate vertically and movably connected to the front side of the back block so as to have an up-down vertical movement function, an internal thread seat fixed on the rear side of the lifting plate, a screw rod vertically inserted and screwed in the internal thread seat and arranged between the lifting plate and the back block, a lifting motor fixed on the front side of the back block and positioned above the lifting plate, a grinding machine head arranged on the front side of the lifting plate, a counterweight mechanism and a distance measuring assembly, wherein a leveling mechanism is arranged below the back block, and comprises a cabin, a bedplate transversely arranged above an opening of the top of the cabin and a main body arranged inside the cabin; the invention can accurately control the lifting distance of the host by means of the distance measuring component to replace the mode of using the grating ruler to achieve the same purpose, thereby effectively reducing the manufacturing cost of the vertical grinder and having lower failure rate; and the requirement on the installation precision is not high, so the debugging is simple and quick.

Description

Positioning system of vertical grinding machine

Technical Field

The invention relates to a positioning system of a vertical grinder.

Background

The vertical grinder is a common machining device, is widely applied to the field of metal machining, and consists of a lathe bed, a machine head, a feeding system, a workbench, a moving system, a control system and the like, wherein the lathe bed is a main supporting part of the grinder, the machine head is a core part of grinding work, the feeding system is used for controlling the machining speed of a workpiece, the workbench provides a contact surface between a cutter and the workpiece, the moving system controls the machine head to lift so as to adjust the relative position of the cutter and the workbench, and the control system is used for controlling the mutual cooperation operation of each motor and each cylinder of the grinder.

In order to accurately control the lifting distance of the machine head, a grating ruler is further arranged on the bed body of the existing vertical grinding machine, the grating ruler is connected into the control system through a data line and is matched with driving equipment in the moving system, and then the lifting distance of the machine head is determined through the grating ruler, but the purchase cost of the grating ruler is high, meanwhile, the corresponding speed of the control system is required to be high, and in order to match with the work of the grating ruler, the vertical grinding machine can be matched with the control system with a higher end, so that the manufacturing cost of the vertical grinding machine is increased; meanwhile, the grating ruler is easy to be polluted, once the cutting fluid splashed in the polishing process is attached to the surface of the grating ruler, the position of the machine head cannot be timely and accurately sensed by the grating ruler, and the grating ruler is also easy to be scratched by waste scraps which fall and fly off, so that the sensing precision is influenced, and therefore, the fault rate is higher; furthermore, the grating ruler has higher requirement on the installation precision, and has large debugging difficulty and long time consumption; in addition, although the conventional vertical grinder moving system is provided with a counterweight device, the vertical grinder moving system is simple in structure, usually uses an iron block with a large weight, is suspended at the back of the machine body by means of pulleys and a matched pull rope, and further counteracts most of the weight of the machine head by using the self weight of the iron block, but the iron block lacks necessary limit and is easy to shake during lifting, and once the machine head falls down due to the failure of traction equipment, the machine head cannot be prevented from falling down due to the fact that the weight of the iron block is smaller than the weight of the machine head, and finally the machine head is damaged, so that the machine head lacks necessary safety protection function, and needs to be waited for.

Disclosure of Invention

Aiming at the current state of the art, the invention aims to provide a positioning system of a vertical grinder, which uses a ranging component to replace a grating ruler so as to effectively reduce the manufacturing cost of the vertical grinder, has lower failure rate, is simple and quick to debug, and has a reliable safety protection function.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a positioning system of vertical grinding machine, including the back piece, vertical and swing joint is in the back piece front side in order to possess the lifter plate of vertical translation function, fix in the internal thread seat of lifter plate rear side, vertical interlude spiro union and be between lifter plate and back piece, fix in the back piece front side and lie in the lifter motor of lifter plate top, and locate the aircraft nose of polishing of lifter plate front side, lifter motor's axis of rotation sets up vertically downwards and fixes in the upper end of lead screw with one heart, the rotatable connection of lower extreme of lead screw is in back piece front side, its characterized in that, be formed with the recess of vertical setting on the rear side outer wall of back piece; the counterweight mechanism comprises a bottom plate transversely fixed at the top of the back block, two side plates vertically fixed at the left side and the right side of the bottom plate and symmetrically arranged, two transmission shafts transversely and rotatably connected between the two side plates and respectively distributed front and back, a counterweight cylinder embedded and fixed in the lower end of the groove, a seat plate transversely fixed at the top of the counterweight cylinder, two limit rods vertically fixed at the top of the seat plate and respectively distributed front and back, a traction block movably arranged between the two limit rods, and two traction components arranged between the lifting plate and the traction block and symmetrically distributed at the left side and the right side of the two limit rods, wherein the telescopic ends of the counterweight cylinder vertically and upwards move through the seat plate and are fixed on the traction block, the outer walls of the front side and the rear side of the traction block are respectively attached to the outer walls of the two limit rods, the end parts of each limit rod are respectively fixed on the bottom plate, the two transmission sprockets are respectively sleeved and fixed on the two transmission shafts, the traction block comprises a transmission sprocket, a traction sprocket and a traction chain, and a traction chain are respectively sleeved on the left side or a right side of the traction block and a traction chain and downwards passes through the left side of the two transmission sprockets which are rotatably connected on the bottom plate and the left side and the right side of the traction block and the right side of the traction block are fixed on the bottom plate and downwards through the front side of the chain and the chain; the automatic lifting device comprises a lifting plate, a lifting motor, a lifting plate, a distance measuring assembly, a screw rod, a lifting motor, a lifting assembly and a gear, wherein the concave cavity is formed in the outer wall of the front side of a back block, the lifting motor is fixed on the bottom surface of the concave cavity, the distance measuring assembly comprises a rack vertically fixed on the bottom surface of the concave cavity, a U-shaped wheel carrier arranged between the lifting plate and the rack, a wheel shaft transversely and rotatably penetrating and connecting in the U-shaped wheel carrier, gears which are fixedly arranged on the wheel shaft and are meshed with the rack are concentrically sleeved, an angular displacement sensor which is fixedly arranged on the left side or the right side of the U-shaped wheel carrier, two bolts transversely penetrating and arranged in the lifting plate, and springs which are respectively sleeved on the two bolts and are always in a compressed state, two ends of the U-shaped wheel carrier are respectively arranged backwards and are respectively distributed left and right, a rotating shaft of the angular displacement sensor is transversely arranged and concentrically fixed at the left end or the right end of the wheel shaft, and the threaded ends of the two bolts are respectively inserted and screwed into the front side of the U-shaped wheel carrier, and each front spring is tightly meshed with the two ends of the U-shaped wheel carrier respectively.

Preferably, the leveling mechanism is further arranged below the back block, the leveling mechanism comprises a cabin, a table transversely arranged above an opening at the top of the cabin and a main body arranged inside the cabin, the main body comprises a bottom frame transversely fixed at the inner side of the bottom of the cabin, a top frame transversely fixed at the bottom of the bedplate, four leveling units which are arranged between the bottom frame and the top frame and symmetrically distributed in pairs, and each leveling unit comprises two universal connectors which are respectively arranged on the top frame and the bottom frame and symmetrically distributed up and down, and a lifting module arranged between the two universal connectors.

Preferably, the universal connector comprises two U-shaped connecting seats arranged up and down and a cross shaft arranged between the two U-shaped connecting seats, wherein one of the upper ends of the U-shaped connecting seats is downwards arranged, the other of the lower ends of the U-shaped connecting seats is upwards arranged and is mutually spaced with the two ends of one of the upper U-shaped connecting seats, the two ends of the cross shaft, which are diagonally arranged, are respectively and rotatably connected with the two ends of one of the U-shaped connecting seats, and the other two ends, which are diagonally arranged, of the cross shaft are respectively and rotatably connected with the two ends of the other U-shaped connecting seat.

Preferably, the upper one of the U-shaped connecting seats in each of the upper universal connectors is fixed on the top frame, and the lower one of the U-shaped connecting seats in each of the lower universal connectors is fixed on the bottom frame.

Preferably, the lifting module comprises a guide block fixed on a U-shaped connecting seat above one universal connector below, a shell fixed on the top of the guide block, a worm transversely and rotatably connected in the shell, a leveling motor fixed outside the shell, a lifting column vertically penetrating and connecting in the shell, and a worm wheel sleeved outside the lifting column and positioned in the shell and meshed with the worm in a threaded manner, wherein the rotating shaft of the leveling motor is transversely arranged and concentrically fixed at one end of the worm, the lower end of the lifting column is movably inserted into the guide block, and the upper end of the lifting column is fixed on a U-shaped connecting seat below one universal connector above.

Preferably, an anti-deflection module is further arranged between the top frame and the bottom frame, the anti-deflection module comprises a first stabilizing block fixed on the bottom frame, a second stabilizing block fixed at the top of the first stabilizing block, a positioning sleeve embedded in the first stabilizing block, and an anti-deflection column vertically and movably inserted in the second stabilizing block, the lower end of the anti-deflection column is movably inserted in the positioning sleeve, a universal connector is also arranged between the upper end of the anti-deflection column and the top frame, one U-shaped connecting seat above the universal connector is fixed on the top frame, and one U-shaped connecting seat below the universal connector is fixed at the upper end of the anti-deflection column.

Preferably, an anti-deflection hole is formed between the top and the bottom of the second stabilizing block, the anti-deflection column is vertically and movably inserted in the anti-deflection hole, two first plane sections which are diagonally arranged are formed on the outer wall of the anti-deflection column, correspondingly, two second plane sections which are diagonally arranged are formed on the inner wall of the anti-deflection hole, and the two first plane sections are respectively and slidably attached to the two second plane sections to prevent the anti-deflection column from rotating.

Preferably, the polishing machine head comprises a supporting seat fixed on the front side of the lifting plate, a polishing motor fixed on the top of the supporting seat and a host fixed on the front side of the supporting seat, and a rotating shaft of the polishing motor vertically extends downwards into the supporting seat; the main machine comprises a rotating shaft box fixed on a supporting seat, a transmission box fixed on the top of the rotating shaft box, a drawing cylinder fixed on the top of the transmission box, a main shaft vertically and rotatably connected in the rotating shaft box in a penetrating way, a clamping head concentrically and movably arranged in the lower end of the main shaft and mutually matched with the main shaft, a sleeve vertically and concentrically arranged in the main shaft in a penetrating way, and a plurality of transmission modules arranged between the main shaft and a rotating shaft of a polishing motor and sequentially distributed from top to bottom, wherein the telescopic end of the drawing cylinder vertically extends into the transmission box downwards and is rotatably connected to the upper end of the sleeve, and the lower end of the sleeve is fixed on the clamping head; the transmission module comprises two first belt wheels which are respectively sleeved and fixed on the main shaft and the rotating shaft of the polishing motor and are respectively positioned in the transmission box and the supporting seat, and a first belt sleeved on the two first belt wheels.

Preferably, the tool bit storage box further comprises a tool bit storage box, wherein the tool bit storage box comprises a support arm fixed on the outer wall of the left side or the right side of the back block, a back frame fixed at the end part of the support arm, a frame movably connected to the front side of the back frame so as to have a left-right translation function, a shifting cylinder fixed on the back frame, a vertical and rotatable conversion shaft connected in the frame, and a chuck transversely and concentrically fixed at the lower end of the conversion shaft and positioned below the frame; the telescopic end of shifting cylinder transversely sets up and fixes in the frame, a plurality of breach grooves along circumferencial direction equiangular distribution are seted up to the edge of chuck, and correspondingly, the top in every breach groove still all is equipped with a fixture block, every the fixture block is all fixed at the top of chuck, every still all be equipped with a vertical distribution and detachable tool bit of polishing in the fixture block, every the tool bit of polishing all locates in a breach groove that corresponds.

Preferably, the tool bit storage warehouse further comprises a conversion motor fixed in the frame, a second belt pulley sleeved and fixed on a rotating shaft of the conversion motor, a third belt pulley sleeved and fixed on the conversion shaft and matched with the second belt pulley, a second belt sleeved and arranged on the second belt pulley and the third belt pulley, and a limiting cover fixed at the bottom of the frame and covered outside the chuck and each clamping block, wherein a tool taking notch is formed in one side edge of the top of the limiting cover, a cover plate which is transversely distributed is further arranged above the top opening of the tool taking notch, the inner side of the cover plate is rotatably connected on the conversion shaft, an arc-shaped baffle is downwards formed at the outer side edge of the cover plate, and the arc-shaped baffle is arranged on the periphery of the side opening of the tool taking notch.

Compared with the prior art, the invention has the advantages that: the invention can accurately control the lifting distance of the host by means of the distance measuring component to replace the mode of using the grating ruler to achieve the same purpose, and the cost of each component forming the distance measuring component is low, the manufacture is convenient, and a control system with higher end is not needed to be carried, thereby effectively reducing the manufacturing cost of the vertical grinder; the distance measuring assembly is not easily influenced by external environment, and further can continuously and effectively play a role, so that the distance measuring assembly has a low failure rate; the requirement on the installation precision is not high, so that the debugging is simple and quick; in addition, the invention replaces the traditional iron block counterweight mode by the counterweight mechanism, the working state is more stable, and in case the host machine descends out of control due to the failure of the lifting motor, the host machine does not descend because the telescopic end of the counterweight cylinder in the counterweight mechanism does not move and the lifting plate is pulled all the time by the traction block and each traction chain, thereby effectively preventing the host machine from being damaged due to falling, and further having reliable safety protection function.

Drawings

FIG. 1 is a right front side block diagram of the present invention;

FIG. 2 is a left rear side block diagram of the present invention;

FIG. 3 is a right front side block diagram of the present invention;

FIG. 4 is a side elevational view of the distance measuring assembly of the present invention;

FIG. 5 is a top view of the distance measuring assembly of the present invention;

FIG. 6 is a right front exploded view of the main machine and the tool bit magazine of the present invention;

fig. 7 is a right front exploded view of the leveling mechanism of the present invention.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

In order to keep the following description of the embodiments of the present invention clear and concise, the detailed description of known functions and known components thereof have been omitted.

As shown in fig. 1 to 7, a positioning system of a vertical grinder includes a back block 1, a lifting plate 3 vertically and movably connected to the front side of the back block 1 to have an up-down vertical movement function, an internal screw seat 5 fixed to the rear side of the lifting plate 3, a screw rod 4 vertically inserted and screwed into the internal screw seat 5 and interposed between the lifting plate 3 and the back block 1, a lifting motor 2 fixed to the front side of the back block 1 and above the lifting plate 3, and a grinder head provided to the front side of the lifting plate 3, wherein a rotation shaft of the lifting motor 2 is vertically and downwardly arranged and concentrically fixed to the upper end of the screw rod 4, the lower end of the screw rod 4 is rotatably connected to the front side of the back block 1, and after the lifting motor 2 is started to rotate the rotation shaft thereof, the screw rod 4 is driven to rotate in the internal screw seat 5, and the internal screw seat 5 is driven to move up or down according to a principle of screw connection, so that the grinder head is driven to move up or down by the lifting plate 3, the principle is as in the prior art; the invention is characterized in that: the back side outer wall of the back block 1 is provided with a vertically arranged groove 101, and also comprises a weight mechanism 9, wherein the weight mechanism 9 comprises a bottom plate 91 transversely fixed at the top of the back block 1, two side plates 92 vertically fixed at the left side and the right side of the bottom plate 91 and symmetrically arranged, two transmission shafts 93 transversely and rotatably connected between the two side plates 92 and respectively distributed front and back, a weight cylinder 95 embedded and fixed in the lower end of the groove 101, a seat plate 96 transversely fixed at the top of the weight cylinder 95, two limit rods 97 vertically fixed at the top of the seat plate 96 and respectively distributed front and back, a traction block 98 movably arranged between the two limit rods 97, and two traction components arranged between the lifting plate 3 and the traction block 98 and symmetrically distributed at the left side and the right side of the two limit rods 97, the telescopic ends of the counterweight air cylinders 95 vertically and upwards move through the seat plates 96 and are fixed on the traction blocks 98, the outer walls of the front side and the rear side of the traction blocks 98 are respectively attached to the outer walls of the two limiting rods 97, the end parts of each limiting rod 97 are fixed on the bottom plate 91, the traction assembly comprises two driving chain wheels 94, two traction chain wheels 99 and a traction chain 910, the two driving chain wheels 94 are respectively sleeved and fixed on the two driving shafts 93, the traction chain wheels 99 are rotatably connected to the left side or the right side outer wall of the traction block 98, the traction chain 910 is erected on the upper sides of the two driving chain wheels 94, the front ends of the traction chain 910 are downwards fixed on the lifting plates 3, and the rear ends of the traction chain 910 downwards move through the bottom plate 91 and upwards pass through the lower parts of the traction chain wheels 99 and are fixed on the bottom plate 91; the distance measuring assembly 10 comprises a rack 1001 vertically fixed on the bottom surface of the concave cavity 102, a U-shaped wheel frame 1002 arranged between the lifting plate 3 and the rack 1001, a wheel shaft 1007 transversely and rotatably penetrating and connecting in the U-shaped wheel frame 1002, a gear 1003 concentrically sleeved on the wheel shaft 1007 and positioned in the U-shaped wheel frame 1002 and meshed with the rack 1001, an angular displacement sensor 1004 fixed on the left side or the right side of the U-shaped wheel frame 1002, two bolts 1005 transversely penetrating and arranging in the lifting plate 3, and two springs 1006 respectively sleeved on the two bolts 1005 and positioned between the lifting plate 3 and the U-shaped wheel frame 1002 and always in a compressed state, wherein two ends of the U-shaped wheel frame 1002 are respectively arranged backwards and distributed left and right, the rotating shaft of the angular displacement sensor 1004 is transversely arranged and concentrically fixed on the left end or the right end of the wheel shaft 1007, the two threaded ends of the two bolts 1005 are respectively inserted into the U-shaped wheel frame 1002 and meshed with the two springs 1006 tightly in the front side and the rear side of the U-shaped wheel frame 1002, and the two springs 1006 are respectively meshed with the front side and the rear side of the U-shaped wheel frame 1002.

The lower part of the back block 1 is also provided with a leveling mechanism 12, the leveling mechanism 12 comprises a cabin 121, a bedplate 122 transversely arranged above the top opening of the cabin 121 and a main body arranged inside the cabin 121, the main body comprises a bottom frame 123 transversely fixed at the inner side of the bottom of the cabin 121, a top frame 124 transversely fixed at the bottom of the bedplate 122, four leveling units which are arranged between the bottom frame 123 and the top frame 124 and symmetrically distributed in pairs, and each leveling unit comprises two universal connectors which are respectively arranged on the top frame 124 and the bottom frame 123 and symmetrically distributed up and down, and a lifting module arranged between the two universal connectors.

The universal connector comprises two U-shaped connecting seats 1256 which are arranged up and down, and a cross shaft 1257 which is arranged between the two U-shaped connecting seats 1256, wherein two ends of one U-shaped connecting seat 1256 above are downwards arranged, two ends of one U-shaped connecting seat 1256 below are upwards arranged and are mutually distributed at intervals with two ends of one U-shaped connecting seat 1256 above, two ends of the cross shaft 1257 are mutually arranged in opposite angles, the two ends of the cross shaft 1257 are respectively and rotatably connected with two ends of one U-shaped connecting seat 1256, and the other two ends of the cross shaft 1257 which are mutually arranged in opposite angles are respectively and rotatably connected with two ends of the other U-shaped connecting seat 1256.

An upper one of the U-shaped connection blocks 1256 of each of the upper universal connectors is fixed to the top frame 124, and a lower one of the U-shaped connection blocks 1256 of each of the lower universal connectors is fixed to the bottom frame 123.

The lifting module includes a guide block 1251 fixed on an upper U-shaped connection seat 1256 of a lower universal connector, a housing 1252 fixed on the top of the guide block 1251, a worm 1255 transversely and rotatably connected in the housing 1252, a leveling motor 1254 fixed outside the housing 1252, a lifting column 1253 vertically penetrating and connected in the housing 1252, and a worm wheel 1258 sleeved outside the lifting column 1253 and positioned in the housing 1252 and meshed with the worm 1255, wherein a rotation shaft of the leveling motor 1254 is transversely arranged and concentrically fixed at one end of the worm 1255, a lower end of the lifting column 1253 is movably inserted into the guide block 1251, and an upper end of the lifting column 1253 is fixed on the lower U-shaped connection seat 1256 of the upper universal connector.

An anti-deflection module is further arranged between the top frame 124 and the bottom frame 123, the anti-deflection module comprises a first stabilizing block 126 fixed on the bottom frame 123, a second stabilizing block 127 fixed on the top of the first stabilizing block 126, a positioning sleeve 128 embedded in the first stabilizing block 126, and an anti-deflection column 129 vertically and movably inserted in the second stabilizing block 127, the lower end of the anti-deflection column 129 is movably inserted in the positioning sleeve 128, a universal connector is also arranged between the upper end of the anti-deflection column 129 and the top frame 124, a U-shaped connecting seat 1256 above the universal connector is fixed on the top frame 124, and a U-shaped connecting seat 1256 below the universal connector is fixed on the upper end of the anti-deflection column 129.

An anti-deflection hole 1271 is formed between the top and the bottom of the second stabilizing block 127, the anti-deflection column 129 is vertically and movably inserted in the anti-deflection hole 1271, two first flat tangential surfaces 1291 which are diagonally arranged are formed on the outer wall of the anti-deflection column 129, correspondingly, two second flat tangential surfaces 1272 which are diagonally arranged are formed on the inner wall of the anti-deflection hole 1271, and the two first flat tangential surfaces 1291 are respectively and slidably attached to the two second flat tangential surfaces 1272 so as to prevent the anti-deflection column 129 from rotating.

The polishing machine head comprises a supporting seat 6 fixed on the front side of the lifting plate 3, a polishing motor 7 fixed on the top of the supporting seat 6 and a host 8 fixed on the front side of the supporting seat 6, wherein a rotating shaft of the polishing motor 7 vertically extends downwards into the supporting seat 6; the main machine 8 comprises a rotating shaft box 81 fixed on the supporting seat 6, a transmission box 82 fixed on the top of the rotating shaft box 81, a drawing cylinder 83 fixed on the top of the transmission box 82, a main shaft 84 vertically and rotatably connected in the rotating shaft box 81 in a penetrating way, a clamping head 88 concentrically and movably arranged inside the lower end of the main shaft 84 and matched with the main shaft 84, a sleeve 85 vertically and concentrically penetrating and arranged in the main shaft 84, and a plurality of transmission modules arranged between the main shaft 84 and the rotating shaft of the polishing motor 7 and distributed in sequence from top to bottom, wherein the telescopic end of the drawing cylinder 83 vertically and downwards extends into the transmission box 82 and is rotatably connected to the upper end of the sleeve 85, and the lower end of the sleeve 85 is fixed on the clamping head 88; the transmission module comprises two first belt pulleys 86 respectively sleeved and fixed on the main shaft 84 and the rotation shaft of the polishing motor 7 and respectively positioned in the transmission case 82 and the supporting seat 6, and a first belt 87 sleeved and arranged on the two first belt pulleys 86.

The positioning system of the vertical grinder further comprises a tool bit storage 11, wherein the tool bit storage 11 comprises a support arm 111 fixed on the left or right outer wall of the back block 1, a back frame 112 fixed on the end part of the support arm 111, a frame 114 movably connected to the front side of the back frame 112 and provided with a left-right translation function, a shifting cylinder 113 fixed on the back frame 112, a conversion shaft 115 vertically and rotatably connected in the frame 114, and a chuck 116 transversely and concentrically fixed at the lower end of the conversion shaft 115 and positioned below the frame 114; the telescopic end of the shifting cylinder 113 is transversely arranged and fixed on the frame 114, a plurality of notch grooves 1161 uniformly distributed along the circumferential direction at equal angles are formed in the edge of the chuck 116, correspondingly, a clamping block 117 is further arranged above each notch groove 1161, each clamping block 117 is fixed at the top of the chuck 116, each clamping block 117 is further provided with a vertically distributed detachable polishing tool bit 118, and each polishing tool bit 118 is arranged in a corresponding notch groove 1161.

The tool bit storage 11 further comprises a conversion motor 119 fixed in the frame 114, a second belt wheel 1110 sleeved and fixed on the rotation shaft of the conversion motor 119, a third belt wheel 1111 sleeved and fixed on the conversion shaft 115 and matched with the second belt wheel 1110, a second belt 1112 sleeved and arranged on the second belt wheel 1110 and the third belt wheel 1111, and a limiting cover 1113 fixed at the bottom of the frame 114 and covered outside the chuck 116 and each clamping block 117, wherein a tool taking gap 11131 is formed at one side edge of the top of the limiting cover 1113, a cover plate 1114 distributed transversely is further arranged above the top opening of the tool taking gap 11131, the inner side of the cover plate 1114 is rotatably connected to the conversion shaft 115, an arc-shaped baffle 11141 is formed at the outer side edge of the cover plate 1114 downwards, and the arc-shaped baffle 11141 is arranged at the periphery of the side opening of the tool taking gap 11131.

Working principle:

when the lifting plate 3 moves upwards, because the weight of the polishing machine head is heavier, the lifting motor 2 receives larger resistance when the lifting plate 3 is pulled upwards, so that the lifting plate 3 moves upwards slowly, at the moment, the telescopic end of the counterweight cylinder 95 in the counterweight mechanism 9 can be driven to shrink inwards to drive the traction block 98 to move downwards vertically between the two limiting rods 97, and further drive the traction chain wheel 99 in each traction assembly and connected to the traction block 98 to move downwards, so that the traction chain 910 in each traction assembly is pulled downwards, and further the lifting plate 3 is pulled upwards by the aid of the two driving chain wheels 94 in each traction assembly, so that the lifting plate 3 moves upwards quickly, and the traction block 98 is limited between the two limiting rods 97 and cannot move forwards and backwards; conversely, if the lifting plate 3 moves downward, the telescopic end of the counterweight cylinder 95 needs to be driven to extend outward to drive the traction block 98 to move upward, so that the front end of the traction chain 910 is loosened in a similar manner so as not to obstruct the downward movement of the lifting plate 3.

When the lifting plate 3 moves up and down, the U-shaped wheel frame 1002 is driven to synchronously move by virtue of the two bolts 1005, so that the gear 1003 is driven to roll up and down along the rack 1001, and meanwhile, the rotation shaft of the angular displacement sensor 1004 is driven to rotate by virtue of the wheel shaft 1007, so that the angular displacement sensor 1004 is triggered to accurately record the degree of rotation; because the U-shaped wheel frame 1002 always has a backward movement trend by virtue of the reverse elasticity action of the two springs 1006 by the two bolts 1005, the gear 1003 in the U-shaped wheel frame 1002 is always pressed and meshed on the rack 1001, so that the meshing gap between the gear 1003 and the rack 1001 is eliminated, the error generated by the meshing gap is eliminated, and the meshing precision is effectively improved.

The parameters (tooth space, tooth top height, etc.) of the rack 1001 are determined according to the parameters (modulus, tooth number, etc.) of the gear 1003 in the distance measuring assembly 10, and then the proportional function of the circumference at the meshing position of the gear 1003 and the vertical movement distance of the lifter plate 3 is obtained according to the parameters (pitch circle diameter, root circle diameter, tooth top circle diameter, etc.) of the gear 1003, which corresponds to the number of turns required to rotate the gear 1003 after each vertical movement of the lifter plate 3 by a certain distance, and since one turn is 360 degrees of rotation, the proportional function of the sum of the vertical movement distance of the lifter plate 3 and the number of turns passed by the rotation axis of the angular displacement sensor 1004, namely, the rotation axis of the angular displacement sensor 1004 is 720 degrees, and if the lifter plate 3 moves up, the sum of the rotation degrees of the rotation axis of the angular displacement sensor 1004 is 900 degrees, and if the lifter plate 3 moves down, the sum of the rotation degrees of the rotation axis of the angular displacement sensor 1004 is positive.

The angular displacement sensor 1004 is connected to a control system of the vertical grinder through a data line, if the distance of the lifting plate 3 moving upwards or downwards is to be controlled, the control system calculates the sum of the degrees of rotation required by the rotating shaft of the angular displacement sensor 1004 according to the proportion function, after the sum of the degrees of rotation of the rotating shaft of the angular displacement sensor 1004 reaches the calculated value, the angular displacement sensor 1004 sends an instruction to the control system, the control system stops the lifting motor 2 after receiving the instruction, and the lifting plate 3 stays at a preset height, so that the lifting distance of the grinding machine head is controlled; in order to improve the control accuracy, the number of teeth of the gear 1003 may be increased and the tooth space of the rack 1001 may be correspondingly reduced, because the more the number of teeth is, the smoother the rotation of the gear 1003 along the rack 1001, the more the rotation speed of the gear 1003 approaches a constant speed, and the more accurate the angle calculation of the rotation axis of the angular displacement sensor 1004.

When the sharpening tool bit is installed, the telescopic end of the shifting cylinder 113 in the tool bit storage 11 is driven to extend outwards or retract inwards to drive the rack 114 to move rightwards or leftwards, then the cover plate 1114 is rotated to expose the tool taking gap 11131, the conversion motor 119 is started to rotate the rotation shaft of the conversion motor, and then the conversion shaft 115 is driven to rotate by means of the second belt pulley 1110, the third belt pulley 1111 and the second belt 1112, so that the selected sharpening tool bit 118 is rotated to the tool taking gap 11131, then the selected sharpening tool bit 118 can be taken down from the clamping block 117, and finally the cover plate 1114 is rotated to the original position to cover the tool taking gap 11131 again.

Then, the telescopic end of the drawing cylinder 83 in the driving host 8 stretches out to drive the chuck 88 to move downwards by means of the sleeve 85, so that the chuck 88 is separated from the lower end of the main shaft 84, then the root of the selected grinding bit 118 is inserted upwards into the chuck 88, the telescopic end of the drawing cylinder 83 is then driven to shrink inwards to drive the chuck 88 to move upwards in the same way, and then the clamping blocks in the chuck 88 are buckled in the clamping grooves positioned outside the grinding bit 118 to clamp the grinding bit 118, so that the grinding bit 118 and the chuck 88 are both fixed on the main shaft 84 to rotate along with the main shaft 84; then, the grinding motor 7 in the grinding machine head is started to rotate the rotating shaft, and the main shaft 84 is driven to rotate by means of the two first belt pulleys 86 and the first belt 87 in each transmission module, so that the grinding tool bit 118 is driven to rotate, and the principle is as the prior art.

Since more parts are assembled from the back block 1 to the polishing tool bit 118, assembly errors caused by assembly gaps are accumulated continuously, and the end part of the polishing tool bit 118 is not parallel to the horizontal direction, so that correction is necessary; during correction, the leveling motor 1254 in the lifting module in one leveling unit in the leveling mechanism 12 is started to rotate the rotating shaft, the worm 1255 drives the worm wheel 1258 to rotate, the worm wheel 1258 drives the lifting column 1253 to move upwards or downwards by means of the spiral connection relation between the worm wheel 1258 and the lifting column 1253, the top frame 124 is slowly lifted upwards or put down by means of the universal connector above, and each remaining leveling unit is operated according to the method, so that the heights of four corners of the top frame 124 can be respectively adjusted, the levelness of the host computer 8 is adjusted by the platen 122, the back block 1, the lifting plate 3 and the supporting seat 6, and the levelness of the end part of the polishing tool bit 118 is finally adjusted; since the two U-shaped connection blocks 1256 of each universal connector can be rotated in opposite directions by the cross 1257, the lifting columns 1253 can be always kept in a vertical state even when the top frame 124 is tilted.

The invention can accurately control the lifting distance of the host 8 by means of the ranging component 10 to replace the mode of using a grating ruler to achieve the same purpose, and the cost of each component forming the ranging component 10 is low, the manufacture is convenient, and a control system with higher end is not needed to be carried, so that the manufacturing cost of the vertical grinder is effectively reduced; the distance measuring assembly 10 is not easily influenced by the external environment, and further can continuously and effectively play a role, so that the fault rate is low; the requirement on the installation precision is not high, so that the debugging is simple and quick; in addition, the invention replaces the traditional iron block counterweight mode by the counterweight mechanism 9, the working state is more stable, and in case the host computer 8 falls out of control due to the failure of the lifting motor 2, the host computer 8 does not fall down because the telescopic end of the counterweight cylinder 95 in the counterweight mechanism 9 does not move and the lifting plate 3 is always pulled by the traction block 98 and each traction chain 910, thereby effectively preventing the host computer 8 from being damaged due to falling, and further having reliable safety protection function.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; while the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that modifications may be made to the techniques described in the foregoing embodiments, or that certain features may be substituted for those illustrated therein; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a positioning system of vertical grinding machine, including the back piece, vertical and swing joint is in the back piece front side in order to possess the lifter plate of vertical translation function, fix in the internal thread seat of lifter plate rear side, vertical interlude spiro union and be between lifter plate and back piece, fix in the back piece front side and lie in the lifter motor of lifter plate top, and locate the aircraft nose of polishing of lifter plate front side, lifter motor's axis of rotation sets up vertically downwards and fixes in the upper end of lead screw with one heart, the rotatable connection of lower extreme of lead screw is in back piece front side, its characterized in that, be formed with the recess of vertical setting on the rear side outer wall of back piece; the counterweight mechanism comprises a bottom plate transversely fixed at the top of the back block, two side plates vertically fixed at the left side and the right side of the bottom plate and symmetrically arranged, two transmission shafts transversely and rotatably connected between the two side plates and respectively distributed front and back, a counterweight cylinder embedded and fixed in the lower end of the groove, a seat plate transversely fixed at the top of the counterweight cylinder, two limit rods vertically fixed at the top of the seat plate and respectively distributed front and back, a traction block movably arranged between the two limit rods, and two traction components arranged between the lifting plate and the traction block and symmetrically distributed at the left side and the right side of the two limit rods, wherein the telescopic ends of the counterweight cylinder vertically and upwards move through the seat plate and are fixed on the traction block, the outer walls of the front side and the rear side of the traction block are respectively attached to the outer walls of the two limit rods, the end parts of each limit rod are respectively fixed on the bottom plate, the two transmission sprockets are respectively sleeved and fixed on the two transmission shafts, the traction block comprises a transmission sprocket, a traction sprocket and a traction chain, and a traction chain are respectively sleeved on the left side or a right side of the traction block and a traction chain and downwards passes through the left side of the two transmission sprockets which are rotatably connected on the bottom plate and the left side and the right side of the traction block and the right side of the traction block are fixed on the bottom plate and downwards through the front side of the chain and the chain; the automatic lifting device comprises a lifting plate, a lifting motor, a lifting plate, a distance measuring assembly, a screw rod, a lifting motor, a lifting assembly and a gear, wherein the concave cavity is formed in the outer wall of the front side of a back block, the lifting motor is fixed on the bottom surface of the concave cavity, the distance measuring assembly comprises a rack vertically fixed on the bottom surface of the concave cavity, a U-shaped wheel carrier arranged between the lifting plate and the rack, a wheel shaft transversely and rotatably penetrating and connecting in the U-shaped wheel carrier, gears which are fixedly arranged on the wheel shaft and are meshed with the rack are concentrically sleeved, an angular displacement sensor which is fixedly arranged on the left side or the right side of the U-shaped wheel carrier, two bolts transversely penetrating and arranged in the lifting plate, and springs which are respectively sleeved on the two bolts and are always in a compressed state, two ends of the U-shaped wheel carrier are respectively arranged backwards and are respectively distributed left and right, a rotating shaft of the angular displacement sensor is transversely arranged and concentrically fixed at the left end or the right end of the wheel shaft, and the threaded ends of the two bolts are respectively inserted and screwed into the front side of the U-shaped wheel carrier, and each front spring is tightly meshed with the two ends of the U-shaped wheel carrier respectively.

2. The positioning system of a vertical grinder according to claim 1, wherein a leveling mechanism is further arranged below the back block, the leveling mechanism comprises a cabin, a table transversely arranged above an opening at the top of the cabin, and a main body arranged inside the cabin, the main body comprises a bottom frame transversely fixed inside the bottom of the cabin, a top frame transversely fixed at the bottom of the platen, four leveling units arranged between the bottom frame and the top frame and symmetrically distributed in pairs, and the leveling units comprise two universal connectors respectively arranged on the top frame and the bottom frame and symmetrically distributed up and down, and a lifting module arranged between the two universal connectors.

3. The positioning system of a vertical grinder according to claim 2, wherein the universal connector comprises two U-shaped connecting seats arranged up and down and a cross shaft arranged between the two U-shaped connecting seats, two ends of one U-shaped connecting seat above the universal connector are arranged downwards, two ends of one U-shaped connecting seat below the universal connector are arranged upwards and are distributed at intervals with two ends of one U-shaped connecting seat above the universal connector, two ends of the cross shaft which are arranged diagonally are respectively and rotatably connected with two ends of one U-shaped connecting seat, and the other two ends of the cross shaft which are arranged diagonally are respectively and rotatably connected with two ends of the other U-shaped connecting seat.

4. A positioning system for a vertical grinder according to claim 3, wherein the upper one of the U-shaped connecting seats in each of the upper and lower universal connectors is fixed to the top frame and the lower one of the U-shaped connecting seats in each of the lower and lower universal connectors is fixed to the bottom frame.

5. The positioning system of a vertical grinder according to claim 4, wherein the elevation module comprises a guide block fixed on a U-shaped connecting seat above in a universal connector below, a housing fixed on the top of the guide block, a worm horizontally and rotatably connected in the housing, a leveling motor fixed outside the housing, an elevation column vertically inserted and connected in the housing, and a worm wheel sleeved outside the elevation column and positioned in the housing and engaged with the worm, a rotation shaft of the leveling motor is horizontally arranged and concentrically fixed on one end of the worm, a lower end of the elevation column is movably inserted in the guide block, and an upper end of the elevation column is fixed on a U-shaped connecting seat below in a universal connector above.

6. The positioning system of a vertical grinder according to claim 5, wherein an anti-deflection module is further disposed between the top frame and the bottom frame, the anti-deflection module comprises a first stabilizing block fixed on the bottom frame, a second stabilizing block fixed on the top of the first stabilizing block, a positioning sleeve embedded in the first stabilizing block, and an anti-deflection column vertically and movably inserted in the second stabilizing block, the lower end of the anti-deflection column is movably inserted in the positioning sleeve, a universal connector is also disposed between the upper end of the anti-deflection column and the top frame, one of the U-shaped connecting seats above the universal connector is fixed on the top frame, and one of the U-shaped connecting seats below the universal connector is fixed on the upper end of the anti-deflection column.

7. The positioning system of a vertical grinding machine according to claim 6, wherein an anti-deviation hole is formed between the top and the bottom of the second stabilizing block, the anti-deviation column is vertically and movably inserted into the anti-deviation hole, two first flat tangential surfaces which are diagonally arranged are formed on the outer wall of the anti-deviation column, correspondingly, two second flat tangential surfaces which are diagonally arranged are formed on the inner wall of the anti-deviation hole, and the two first flat tangential surfaces are respectively and slidably attached to the two second flat tangential surfaces to prevent the rotation of the anti-deviation column.

8. The positioning system of a vertical grinder according to claim 7, wherein the grinding machine head comprises a supporting seat fixed on the front side of the lifting plate, a grinding motor fixed on the top of the supporting seat, and a main machine fixed on the front side of the supporting seat, and a rotating shaft of the grinding motor extends vertically downwards into the supporting seat; the main machine comprises a rotating shaft box fixed on a supporting seat, a transmission box fixed on the top of the rotating shaft box, a drawing cylinder fixed on the top of the transmission box, a main shaft vertically and rotatably connected in the rotating shaft box in a penetrating way, a clamping head concentrically and movably arranged in the lower end of the main shaft and mutually matched with the main shaft, a sleeve vertically and concentrically arranged in the main shaft in a penetrating way, and a plurality of transmission modules arranged between the main shaft and a rotating shaft of a polishing motor and sequentially distributed from top to bottom, wherein the telescopic end of the drawing cylinder vertically extends into the transmission box downwards and is rotatably connected to the upper end of the sleeve, and the lower end of the sleeve is fixed on the clamping head; the transmission module comprises two first belt wheels which are respectively sleeved and fixed on the main shaft and the rotating shaft of the polishing motor and are respectively positioned in the transmission box and the supporting seat, and a first belt sleeved on the two first belt wheels.

9. The positioning system of a vertical grinder according to claim 8, further comprising a tool bit receiving box including a support arm fixed to an outer wall of a left side or a right side of the back block, a back frame fixed to an end of the support arm, a frame movably connected to a front side of the back frame to have a left-right translation function, a shift cylinder fixed to the back frame, a conversion shaft vertically and rotatably connected in the frame, and a chuck horizontally and concentrically fixed to a lower end of the conversion shaft and positioned below the frame; the telescopic end of shifting cylinder transversely sets up and fixes in the frame, a plurality of breach grooves along circumferencial direction equiangular distribution are seted up to the edge of chuck, and correspondingly, the top in every breach groove still all is equipped with a fixture block, every the fixture block is all fixed at the top of chuck, every still all be equipped with a vertical distribution and detachable tool bit of polishing in the fixture block, every the tool bit of polishing all locates in a breach groove that corresponds.

10. The positioning system of a vertical grinder according to claim 9, wherein the tool bit storage further comprises a conversion motor fixed in the frame, a second belt wheel sleeved on a rotation shaft of the conversion motor, a third belt wheel sleeved on the conversion shaft and matched with the second belt wheel, a second belt sleeved on the second belt wheel and the third belt wheel, and a limiting cover fixed at the bottom of the frame and covered outside the chuck and each clamping block, a tool taking notch is formed at one side edge of the top of the limiting cover, a cover plate distributed transversely is further arranged above the top opening of the tool taking notch, the inner side of the cover plate is rotatably connected to the conversion shaft, an arc-shaped baffle is formed downwards at the outer side edge of the cover plate, and the arc-shaped baffle is arranged at the periphery of the side opening of the tool taking notch.