CN212169255U

CN212169255U - Electric spark machining grinding machine for low-roughness grinding tool

Info

Publication number: CN212169255U
Application number: CN202020748335.2U
Authority: CN
Inventors: 冯双勇
Original assignee: Henan Juchuang Abrasives Co ltd
Current assignee: Henan Juchuang Abrasives Co ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2020-12-18
Anticipated expiration: 2030-05-08

Abstract

The utility model relates to a diamond wheel processing technology field discloses an electric spark machining grinding machine for low roughness grinding apparatus, the on-line screen storage device comprises a base, the rear side is equipped with the grinding subassembly on the base, the front side is equipped with the fixed subassembly of work piece, the fixed subassembly of work piece includes X axle workstation, Y axle workstation, the top mechanism in a left side, the top mechanism in a right side and connecting axle, the top mechanism in a left side is including left top, the top connection pad in a left side, be equipped with connecting rod one on the connection pad, the top mechanism in a right side includes the sleeve, right side top, the jackscrew, internal thread hole one and internal thread hole two on the sleeve, the top connection in internal thread hole one in the right side, the jackscrew is connected in internal thread hole two, the both ends of connecting axle respectively with left top. The utility model discloses the wearing and tearing of grinding emery wheel are little, have reduced the frequency that processing cost and equipment maintenance changed, simple structure, convenient to use, application scope is wide.

Description

Electric spark machining grinding machine for low-roughness grinding tool

Technical Field

The utility model relates to a diamond wheel machining technical field especially relates to an electrosparking grinding machine for low roughness grinding apparatus.

Background

The low-roughness grinding tool diamond grinding wheel needs to be ground in the machining process, and is mostly realized by a grinding wheel rotating at a high speed at present. Because the hardness of the diamond grinding wheel is very high, the grinding wheel is seriously worn, and the processing cost is high. In the prior art, the electric spark grinding is an electric spark processing method for removing conductive materials by generating pulse discharge between a tool and a workpiece, generally, a conductive grinding wheel made of high-purity graphite materials is adopted to grind the workpiece, the grinding wheel and a workbench are insulated with other parts of a machine tool and are respectively connected with a pulse power supply, sufficient working solution is supplied between the grinding wheel and the workpiece during grinding, the workbench feeds the grinding wheel at a certain speed, so that a narrow spark gap is kept between the workpiece and the grinding wheel, the high-frequency spark discharge generated in the spark gap removes metal materials, thereby achieving the purpose of grinding, and the grinding method has the advantages that the grinding wheel is not in direct contact with a workpiece, so the abrasion of the grinding wheel is less, however, most of the existing electric spark grinding machines are surface grinding machines for medium and small parts, and cannot be directly applied to grinding of diamond grinding wheels. In addition, when the gap between the workpiece and the grinding wheel reaches the spark gap required to be maintained due to human misoperation in the feeding process of the workbench to the grinding wheel, the workbench still feeds to the grinding wheel, or the workpiece is fed to the grinding wheel due to external factors during grinding, so that the specific spark gap between the workpiece and the grinding wheel cannot be maintained, the normal operation of grinding operation is seriously influenced, and economic loss is caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the prior technical problem, the utility model provides an electrosparking grinding machine for low roughness grinding apparatus.

In order to achieve the above object, the utility model provides a following technical scheme: an electric spark machining grinding machine for a low-roughness grinding tool comprises a base, wherein a grinding assembly is arranged on the rear side of the base, a workpiece fixing assembly is arranged on the front side of the base, the grinding assembly comprises a grinding workbench, a grinding motor and a graphite grinding wheel, the grinding workbench is connected to the base in a sliding mode along the front-back direction, an elastic mechanism is connected between the grinding workbench and the base, the grinding motor is fixed to the grinding workbench, and the graphite grinding wheel is connected to an output shaft of the grinding motor;

the workpiece fixing assembly comprises an X-axis workbench, a Y-axis workbench, a left center mechanism, a right center mechanism and a connecting shaft, the X-axis workbench is connected to the Y-axis workbench in a sliding mode along the left-right direction, the Y-axis workbench is connected to the base in a sliding mode along the front-back direction, a top rod is connected to the Y-axis workbench in a threaded mode, the top rod is axially arranged along the front-back direction, the left center mechanism and the right center mechanism are respectively arranged on the left side and the right side of the X-axis workbench, the left center mechanism comprises a left center and a workpiece driving assembly used for driving the left center, the left center is coaxially connected with a connecting disc, a first connecting rod extending towards the right side is arranged on the connecting disc, the right center mechanism comprises a sleeve, a right center and a top wire, the sleeve is fixed to the X-axis workbench, an axial inner threaded hole I and a radial inner threaded hole II are, the right top is in threaded connection with the inside of the first inner threaded hole, the top thread is in threaded connection with the inside of the second inner threaded hole, two ends of the connecting shaft are respectively abutted to the left top and the right top, a second connecting rod extending in the radial direction is arranged on the connecting shaft, and a jack for the first connecting rod to penetrate through is formed in the second connecting rod.

Preferably, the workpiece driving assembly comprises a driving box, a workpiece motor, a driving gear, a driven gear and a workpiece rotating shaft, the driving box is fixed on the X-axis workbench, the workpiece motor is fixed in the driving box, the driving gear is connected to an output shaft of the workpiece motor, the driven gear is meshed with the driving gear and is connected to the workpiece rotating shaft, and the workpiece rotating shaft is rotatably connected to the driving box and is connected with the left tip.

Preferably, elastic mechanism includes fixed plate, guide bar and coupling spring, the fixed plate is fixed in on the base of grinding workstation rear side, be equipped with the guiding hole that extends along the fore-and-aft direction on the grinding workstation, guide bar one end is fixed on the fixed plate, and the other end inserts in the guiding hole and with guiding hole sliding fit, the coupling spring cover is located the guide bar outside and its both ends and is connected with fixed plate and grinding workstation respectively.

Preferably, grinding workstation rear side is equipped with first sheetmetal, first sheetmetal is along fore-and-aft direction sliding connection on the base, be connected with the second sheetmetal relative with first sheetmetal on the grinding workstation, be equipped with battery case and bee calling organ on the base, bee calling organ and first sheetmetal electricity are connected and are connected with the positive pole of battery case, the second sheetmetal is connected with the negative pole of battery case.

The utility model discloses still including enabling other subassemblies that an electrosparking grinding machine that is used for low roughness grinding apparatus normally worked, be the conventional technological means in this field. In addition, the device or the component which is not limited in the utility model adopts the conventional technical means in the field.

The utility model discloses can carry out the electric spark to low roughness grinding apparatus diamond grinding wheel and polish, grinding wheel's wearing and tearing are little, have reduced the frequency that processing cost and equipment maintenance changed to can ensure that the work piece and the grinding wheel of the in-process of polishing remain throughout at specific spark gap, simple structure, convenient to use, application scope is wide.

Drawings

Fig. 1 is a front view of the present embodiment.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a schematic structural view of the right center mechanism in fig. 1.

Fig. 4 is a schematic circuit diagram of the buzzer in this embodiment.

In the figure: the grinding machine comprises a base 1, a grinding workbench 2, a grinding motor 3, a graphite grinding wheel 4, an X-axis workbench 5, a Y-axis workbench 6, a connecting shaft 7, a push rod 8, a left tip 9, a connecting disc 10, a connecting rod I11, a sleeve 12, a right tip 13, a jack screw 14, a connecting rod II 15, a driving box 16, a workpiece motor 17, a driving gear 18, a driven gear 19, a workpiece rotating shaft 20, a fixing plate 21, a guide rod 22, a connecting spring 23, a first metal sheet 24, a second metal sheet 25, a battery box 26, a buzzer 27 and a diamond grinding wheel 28.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings.

Examples

Referring to fig. 1-4, an electric spark machining grinding machine for a low-roughness grinding tool comprises a base 1, wherein a grinding assembly is arranged on the rear side of the base 1, a workpiece fixing assembly is arranged on the front side of the base 1, the grinding assembly comprises a grinding workbench 2, a grinding motor 3 and a graphite grinding wheel 4, the grinding workbench 2 is connected to the base 1 in a sliding mode along the front-back direction, an elastic mechanism is connected between the grinding workbench 2 and the base 1, the grinding motor 3 is fixed to the grinding workbench 2, and the graphite grinding wheel 4 is connected to an output shaft of the grinding motor 3.

The workpiece fixing assembly comprises an X-axis workbench 5, a Y-axis workbench 6, a left tip mechanism, a right tip mechanism and a connecting shaft 7, the X-axis workbench 5 is connected to the Y-axis workbench 6 in a left-right sliding mode, the Y-axis workbench 6 is connected to the base 1 in a front-back sliding mode, an ejector rod 8 is connected to the Y-axis workbench 6 in a threaded mode, the ejector rod 8 is axially arranged in a front-back direction, the left tip mechanism and the right tip mechanism are arranged on the left side and the right side of the X-axis workbench 5 respectively, the left tip mechanism comprises a left tip 9 and a workpiece driving assembly used for driving the left tip 9, the left tip 9 is coaxially connected with a connecting plate 10, and a connecting rod I11 extending towards the right side is arranged on the connecting plate 10. The right centre mechanism comprises a sleeve 12, a right centre 13 and a jackscrew 14, the sleeve 12 is fixed on the X-axis workbench 5, an axial internal thread hole I and a radial internal thread hole II are formed in the sleeve 12, the internal thread hole II is communicated with the internal thread hole I, the right centre 13 is in threaded connection with the internal thread hole I, the jackscrew 14 is in threaded connection with the internal thread hole II, two ends of the connecting shaft 7 are respectively abutted against the left centre 9 and the right centre 13, a radially extending connecting rod II 15 is arranged on the connecting shaft 7, and a jack (not shown in the figure) for the connecting rod I11 to penetrate through is formed in the connecting rod II 15.

The workpiece driving assembly comprises a driving box 16, a workpiece motor 17, a driving gear 18, a driven gear 19 and a workpiece rotating shaft 20, the driving box 16 is fixed on the X-axis workbench 5, the workpiece motor 17 is fixed in the driving box 16, the driving gear 18 is connected to an output shaft of the workpiece motor 17, the driven gear 19 is meshed with the driving gear 18 and is connected to the workpiece rotating shaft 20, and the workpiece rotating shaft 20 is rotatably connected to the driving box 16 and is connected with the left center 9.

Elastic mechanism includes fixed plate 21, guide bar 22 and coupling spring 23, fixed plate 21 is fixed in on the base 1 of 2 rear sides of grinding workstation, be equipped with the guiding hole that extends along the fore-and-aft direction on the grinding workstation 2, guide bar 22 one end is fixed on fixed plate 21, and the other end inserts in the guiding hole and with guiding hole sliding fit, coupling spring 23 cover is located the guide bar 22 outside and its both ends and is connected with fixed plate 21 and grinding workstation 2 respectively.

The grinding table 2 rear side is equipped with first sheetmetal 24, first sheetmetal 24 is along fore-and-aft direction sliding connection on base 1, be connected with the second sheetmetal 25 relative with first sheetmetal 24 on the grinding table 2, be equipped with battery case 26 and bee calling organ 27 on the base 1, bee calling organ 27 and first sheetmetal 24 electricity are connected and are connected with the anodal of battery case 26, second sheetmetal 25 is connected with the negative pole of battery case 26.

In this embodiment, the grinding table 2 and the base 1, and the first metal sheet 24 and the base 1 are slidably connected through a sliding groove and a sliding block extending in the front-back direction (this is prior art, and detailed description is omitted); the X-axis workbench 5 and the Y-axis workbench 6 respectively realize the feeding of the workpiece in the X-axis direction (left and right direction) and the Y-axis direction (front and back direction) by adopting a lead screw nut structure in the prior art; the right centre 13 is connected with an adjusting handwheel; the type and model of the battery in the battery box 26 and the model of the buzzer 27 are all conventional choices for those skilled in the art; two connecting rods are arranged on the first connecting rod 11 and the second connecting rod 15.

During the use, treat that the 28 work piece covers of diamond grinding wheel of polishing establish and connect in the connecting axle 7 outside, the both ends of connecting axle 7 respectively with left top 9, right top 13 butt, the work piece feeds to graphite grinding wheel 4 with certain speed, and with keep narrow and small spark gap between the graphite grinding wheel 4, produce high frequency spark discharge and polish the work piece in the spark gap, the in-process of polishing, grinding motor 3 drives graphite grinding wheel 4 rotatory, work piece motor 17 drives work piece pivot 20 through gear drive and rotates, thereby it is rotatory to drive connection pad 10 and left top 9, connection pad 10 drives the work piece through connecting rod one 11 that inserts in the jack on connecting rod two 15 and rotates, thereby the outer disc that makes the work piece obtains evenly polishing comprehensively.

In the process that the workpiece is fed to the graphite grinding wheel 4, when the workpiece and the graphite grinding wheel 4 are just in the spark gap required to be maintained, the ejector rod 8 is just in contact with the side surface of the grinding workbench 2 but does not generate acting force on the grinding workbench 2, and at the moment, the feeding of the workpiece is stopped so that the workpiece and the graphite grinding wheel 4 maintain the spark gap; when the distance between the workpiece and the graphite grinding wheel 4 is smaller than the spark gap required to be maintained due to manual operation errors or external factors, the ejector rod 8 generates thrust on the grinding workbench 2, the grinding workbench 2 overcomes the elastic force of the spring to move towards the rear side of the base 1, so that the workpiece and the graphite grinding wheel 4 continue to maintain the specific spark gap, meanwhile, the first metal sheet 24 is in contact with the second metal sheet 25, the alarm circuit is switched on, and the buzzer 27 gives an alarm to remind an operator. The ejector rod 8 is in threaded connection with the Y-axis workbench 6, and the extending length of the ejector rod 8 can be adjusted according to different spark gaps which can be kept as required, so that different processing requirements are met.

The right centre 13 can be fed along the left-right direction, so that the connecting shaft 7 can be conveniently mounted and dismounted, and the operation is as follows: during installation, the left end of the connecting shaft 7 is abutted to the left tip 9, the first connecting rod 11 is inserted into the insertion hole in the second connecting rod 15, the adjusting hand wheel is rotated, the right tip 13 moves leftwards until the connecting shaft 7 is fixed between the left tip 9 and the right tip 13, and finally the jackscrew 14 is screwed up and abutted to the right tip 13, so that the connecting shaft 7 is prevented from falling off due to circumferential displacement of the right tip 13 when the connecting shaft 7 rotates.

The foregoing description of the embodiments of the invention has been presented for purposes of illustration and not limitation, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the illustrated embodiments.

Claims

1. The utility model provides an electrical discharge machining grinding machine for low roughness grinding apparatus, includes the base, its characterized in that: the grinding assembly is arranged on the rear side of the base, the workpiece fixing assembly is arranged on the front side of the base, the grinding assembly comprises a grinding workbench, a grinding motor and a graphite grinding wheel, the grinding workbench is connected to the base in a sliding mode along the front-back direction, an elastic mechanism is connected between the grinding workbench and the base, the grinding motor is fixed to the grinding workbench, and the graphite grinding wheel is connected to an output shaft of the grinding motor;

2. An electric discharge machining grinder for a low roughness abrasive tool as claimed in claim 1, wherein: the workpiece driving assembly comprises a driving box, a workpiece motor, a driving gear, a driven gear and a workpiece rotating shaft, the driving box is fixed on the X-axis workbench, the workpiece motor is fixed in the driving box, the driving gear is connected to an output shaft of the workpiece motor, the driven gear is meshed with the driving gear and is connected to the workpiece rotating shaft, and the workpiece rotating shaft is rotatably connected to the driving box and is connected with the left tip.

3. An electric discharge machining grinder for a low roughness abrasive tool as claimed in claim 1, wherein: elastic mechanism includes fixed plate, guide bar and coupling spring, the fixed plate is fixed in on the base of grinding workstation rear side, be equipped with the guiding hole that extends along the fore-and-aft direction on the grinding workstation, guide bar one end is fixed on the fixed plate, the other end insert in the guiding hole and with guiding hole sliding fit, the coupling spring cover is located the guide bar outside and its both ends and is connected with fixed plate and grinding workstation respectively.

4. An electric discharge machining grinder for a low roughness abrasive tool as claimed in claim 1, wherein: the grinding workbench is characterized in that a first metal sheet is arranged on the rear side of the grinding workbench, the first metal sheet is connected to the base in a sliding mode along the front-rear direction, a second metal sheet opposite to the first metal sheet is connected to the grinding workbench, a battery box and a buzzer are arranged on the base, the buzzer is electrically connected with the first metal sheet and connected with the anode of the battery box, and the second metal sheet is connected with the cathode of the battery box.