CN111014766A - Motor shaft hole processing equipment - Google Patents

Abstract

The invention discloses a motor shaft hole processing device which comprises a bed body, a mechanism main body, a cutting fluid box body, a main shaft cooling fluid box body and a distribution box, wherein the mechanism main body is arranged on the bed body; the mechanism main part includes feed assembly, drilling subassembly, station conversion subassembly and conveyer belt, and wherein feed assembly, drilling subassembly, station conversion subassembly are all installed on the table surface of the bed body, and the conveyer belt is installed in station conversion subassembly's side, under the unloading clamping jaw. The invention greatly improves the processing precision, can ensure that the concentricity of the shaft hole and the shaft and the angle of the cone angle are controlled within the allowable tolerance range, and reduces the rejection rate; the traditional manual operation processing mode is replaced, the efficiency is greatly improved, the processing precision is high, the labor intensity of operators is reduced, and the rejection rate is reduced; the automatic feeding and discharging are realized, the equipment runs uninterruptedly, the production beat is stable, and the production efficiency is improved.

Description

Motor shaft hole processing equipment

Technical Field

The invention relates to workpiece processing equipment, in particular to motor shaft hole processing equipment.

Background

The motor shaft is an important component of a motor product, and the processing precision and quality of the motor shaft directly influence the overall quality and service life of the motor. As shown in fig. 1A to 1B, a conventional motor shaft product tail taper hole is usually processed by a common lathe in a manual operation mode, and needs to be manually fed into a fixture, so that the stability is poor, the efficiency is low, waste products are easy to occur, and the defects of high rejection rate, low processing precision, high labor intensity and the like exist. The main disadvantages are divided into two aspects:

aspect of feeding

1. The efficiency is low: the production efficiency is influenced due to the fact that people are fatigued due to frequent repeated labor and the mental state of people also influences the production efficiency;

2. the rejection rate is high: because the product has the positive and negative directions, once an operator neglects, waste products can be caused, and meanwhile, the attention of the operator can be distracted due to the external influence;

3. cannot work continuously for a long time: the manual operation will have rest time, resulting in the production stop of the equipment;

4. the precision is low: manual operation is not as stable as a machine and is prone to dimensional variations.

Aspect of processing

1. Continuous processing cannot be performed, the workpiece needs to be taken down after each processing is finished, and then the next workpiece is clamped, so that the processing cannot be performed continuously, the interval time is long, the labor intensity of personnel is high, and the production efficiency is low;

2. the equipment has poor stability and large size deviation, and wastes are easily caused by out-of-tolerance;

3. the clamping efficiency of the chuck is low, and the requirement of continuous operation cannot be met;

4. the processed workpiece needs to be manually fed, and a lot of time is wasted.

Disclosure of Invention

Aiming at the defects of high labor intensity, low efficiency and the like in the machining process of the taper hole at the tail part of the motor shaft product in the prior art, the invention aims to provide the motor shaft hole machining equipment which can automatically feed and discharge materials, continuously machine and greatly improve the working efficiency.

In order to solve the technical problems, the invention adopts the technical scheme that:

the invention relates to a motor shaft hole machining device which comprises a bed body, a mechanism main body, a cutting fluid box body, a main shaft cooling fluid box body and a distribution box, wherein the mechanism main body is arranged on the bed body; the mechanism main part includes feed assembly, drilling subassembly, station conversion subassembly and conveyer belt, and wherein feed assembly, drilling subassembly, station conversion subassembly are all installed on the table surface of the bed body, and the conveyer belt is installed in station conversion subassembly's side, under the unloading clamping jaw.

The feeding assembly comprises a base, a V-shaped groove guide rail, a material pushing cylinder, a threaded cylinder, a servo motor and a discharging cylinder, wherein the base is fixed on the table top of the bed body, and the V-shaped groove guide rail is arranged on the base through a base plate and a guide rail seat; an optical fiber support is also fixed on the guide rail seat, and an optical fiber connecting plate and an optical fiber sensor are arranged on the optical fiber support; the two sides of the optical fiber support are respectively provided with a first support and a second support, a bin bottom plate is fixed between the first support and the second support to form a hopper, and a workpiece is arranged on the bin bottom plate; the servo motor is arranged on a bracket on one side through a motor support, an output shaft of the servo motor is provided with a distributing wheel through a coupler and a rotating shaft, the end faces of two sides of the distributing wheel are provided with striker plates, and the front end of the rotating shaft is arranged on a first bracket through a bearing and is pressed tightly through a shaft end pressing plate, a bearing pressing cover and an end cover; the pushing cylinder is fixed on the guide rail seat through a pushing cylinder seat, and the front end of the pushing cylinder is provided with a push rod and a threaded cylinder through a connecting rod; the blanking cylinder is arranged on one side of the base through a blanking cylinder support, and a piston rod of the blanking cylinder is connected with a blanking air claw through an air claw connecting plate.

The feeding assembly is also provided with a material distributing wheel lower baffle and a material distributing wheel upper baffle which are arranged on the upper side and the lower side of the material distributing wheel and between the first bracket and the second bracket;

the anti-detection device of material still has, installs on the branch material takes turns the overhead gage of material wheel, including detection bar and proximity switch, wherein proximity switch passes through the proximity switch support mounting on the branch material takes turns the overhead gage, and detection bar one end is put the external diameter of work piece or the groove footpath butt of just putting the work piece with turning over, and when putting work piece and detection bar butt, the detection bar other end touches proximity switch.

The drilling assembly comprises a Z-axis base, a linear guide rail assembly, an electric main shaft, a first push rod, a second push rod and a cylinder, wherein the Z-axis base is fixed on the table top of the bed body; the electric spindle is arranged in a spindle seat, and the spindle seat is fixedly arranged on the sliding table base plate through a spindle backing plate; the first push rod is fixed below the sliding table base plate and connected with the second push rod through a bolt, the second push rod is connected with the joint through a hinge pin, the joint is installed at the front end of a piston rod of the Z-axis cylinder, and the Z-axis cylinder is installed on one side of the end part of the guide rail seat through a cylinder seat.

The push rod assembly comprises a first push rod fixed below the sliding table base plate and connected with a second push rod through a bolt, the second push rod is connected with a joint through a hinge pin, and the joint penetrates through a through hole in the middle of the cylinder block and is installed at the front end of a piston rod of the Z-axis cylinder.

The station conversion assembly comprises jigs, linear guide rail assemblies and an X-axis cylinder, wherein the linear guide rail assemblies are fixed on the table top of the bed body through guide rail seats, sliding table base plates are arranged on sliding blocks of the linear guide rail assemblies, the two groups of jigs are vertically arranged on the sliding table base plates in parallel through jig supports, and the sliding table base plates are fixedly arranged on the sliding blocks of the linear guide rail assemblies; the cylinder is installed in guide rail seat one side through first baffle and first cushion.

The station conversion assembly further comprises a first hydraulic buffer, a second hydraulic buffer, a first limiting screw, a second limiting screw and a third limiting screw, wherein the first hydraulic buffer and the first limiting screw are arranged at one end of the guide rail seat through a first baffle and a first cushion block, and the second hydraulic buffer and the second limiting screw are arranged at the other side of the guide rail seat through a second baffle and a second cushion block.

And a buffer stop block and a connecting block are also arranged below the sliding block of the linear guide rail assembly.

The jig comprises a positioning block, a diaphragm chuck, a pressing sheet, a cylinder body front end cover, a piston and a rear end cover, wherein the positioning block is installed on the diaphragm chuck, the diaphragm chuck is installed on the cylinder body, the pressing sheet penetrates through an inner hole of the cylinder body and is installed on the piston, the front end cover is in interference fit connection with the cylinder body, the rear end cover is connected with the cylinder body, and the piston is arranged between the rear end cover and the front end cover.

The invention has the following beneficial effects and advantages:

1. the invention applies the automatic processing to the processing technology of various mechanical parts, greatly improves the processing precision, and particularly can ensure that the shaft hole and the shaft are concentric and the angle of the cone angle is controlled within the allowable tolerance range by processing the taper hole at the tail part of the motor shaft product, thereby reducing the rejection rate; the traditional manual operation processing mode is replaced, the efficiency is greatly improved, the processing precision is high, the labor intensity of operators is reduced, and the rejection rate is reduced; the automatic feeding and discharging are realized, the equipment runs uninterruptedly, the production beat is stable, and the production efficiency is improved.

2. According to the invention, the drilling process is processed as an independent process by using an automatic feeding mode, the drilling depth is ensured by a sensor, and the linear precision is ensured by a precise linear guide rail; the tail taper hole is efficiently machined by matching automatic feeding and discharging; and meanwhile, two identical jigs are used for alternately carrying out feeding processing and discharging, and the cylinder drives the sliding table to reciprocate so that the two jigs alternately reach a feeding station and a discharging station, so that the production efficiency is greatly improved.

3. The self-made starting diaphragm chuck jig is internally provided with the pneumatic diaphragm chuck, and the pneumatic diaphragm chuck is opened and closed through communication with the feeding system and the processing system, so that the requirement of full-automatic operation of equipment is met, the stability of workpiece clamping is ensured, the processing precision of the workpiece is directly determined, and the self-made starting diaphragm chuck jig has the advantages of stable processing beat, high precision, high efficiency and the like.

4. The invention has the function of material reversal detection, can automatically identify the positive and negative directions of the workpiece, and reduces the rejection rate; the motor shaft hole processed by the equipment of the invention has the depth reaching 100 percent to meet the process requirement, thereby saving the cost and realizing zero rework.

Drawings

FIG. 1A is a schematic view of the processing of a workpiece according to the present invention;

FIG. 1B is a partial enlarged view of FIG. 1A;

FIG. 2A is a perspective view (one) of the whole structure of the motor shaft hole processing equipment of the present invention;

FIG. 2B is a perspective view of the whole structure of the motor shaft hole processing apparatus of the present invention;

FIG. 3A is a perspective view of the combined structure of the feeding assembly, the station switching assembly, the drilling assembly and the conveyor belt in the present invention;

FIG. 3B is a front view of the feed assembly, station conversion assembly, drilling assembly and conveyor belt assembly of the present invention;

FIG. 3C is a top view of FIG. 3B;

FIG. 3D is a left side view of FIG. 3B;

FIG. 4A is an exploded view of the feed assembly of the present invention;

FIG. 4B is a perspective view of the structure of the feeding assembly of the present invention;

FIG. 4C is a front view of the feed assembly of the present invention;

FIG. 4D is a left side view of FIG. 4C;

FIG. 5A is an exploded view of the drilling assembly structure of the present invention;

FIG. 5B is a perspective view of the drilling assembly of the present invention;

FIG. 5C is a front view of the drilling assembly of the present invention;

FIG. 5D is a top view of FIG. 5C;

FIG. 6A is an exploded view of a workstation conversion assembly according to the present invention;

FIG. 6B is a perspective view of a station conversion assembly according to the present invention;

FIG. 6C is a front view of a station changing assembly according to the present invention;

FIG. 6D is a top view of FIG. 6C;

FIG. 7A is an exploded view of a jig structure according to the present invention;

FIG. 7B is a cross-sectional view of the jig structure;

FIG. 8A is an exploded view of a conveyor belt structure according to the invention;

FIG. 8B is a schematic diagram of a conveyor belt structure according to the present invention.

Wherein A is a bed body, B is a mechanism main body, C is a cutting fluid box body, D is a main shaft cooling fluid box body, and E is a distribution box;

1 is a feeding assembly, 101 is a feeding base, 102 is a base plate, 103 is a feeding guide rail seat, 104 is a V-shaped groove guide rail, 105 is an optical fiber support, 106 a-106 b are a first support, a second support, 107 is a bin bottom plate, 108 is a shaft end pressing plate, 109 is a bearing pressing cover, 110 is an end cover, 111 is a bearing, 112 is a material stopping plate, 113 is a rotating shaft, 114 is a material distributing wheel, 115 is a coupler, 116 is a motor support, 117 is a servo motor, 118 is a material pushing cylinder, 119 is a material pushing cylinder seat, 120 is a connecting rod, 121 is a push rod, 122 is a threaded cylinder, 123 is an optical fiber mounting plate, 124 is an optical fiber sensor, 125 is a blanking cylinder support, 126 is a blanking cylinder, 127 is an air claw connecting plate, 128 is a blanking air claw, 129 is a lower baffle plate of the material distributing wheel, 130 is an upper baffle plate of the material distributing wheel, 131 is a material counter detection mounting plate, 132 is a detection rod, 133 is a spring, 136 is a feed proximity switch;

2, a drilling assembly, 201 a Z-axis base, 202 a Z-axis guide rail seat, 203 a limiting block, 204 a linear guide rail assembly, 205 a sliding table base plate, 206 a Z-axis approach switch bracket, 207 a Z-axis approach switch, 208 a hydraulic damper, 209 a damper bracket, 210 a main shaft backing plate, 211 an electric main shaft, 212 a main shaft seat, 213 a first push rod, 214 a second push rod, 215 a hinge pin, 216 a bolt, 217 a Z-axis cylinder seat, 218 a joint and 219 a Z-axis cylinder;

3, a station conversion assembly, 301, a jig support, 302, 30201, a positioning block, 30202, a diaphragm chuck, 30203, a pressing sheet, 30204, a cylinder block, 30205, a front end cap, 30206, a piston, 30207, a rear end cap, 303, a slide base plate, 304, a limit screw stop, 305, a bumper stop, 306, a connecting block, 307, a linear guide rail assembly, 308a to 308b, first to second cushion blocks, 309a to 309b, first to second baffle plates, 310, an X-axis cylinder, 311a to 311b, first and second limit screws, 312a to 312b, first to hydraulic buffers, and 313, a guide rail seat;

4 is a conveyor belt, 401 is a motor, 402 is a bracket, 403 is a flat belt, 404 is a driving wheel 405 is a supporting shaft, 406 is a tensioning mechanism, 407 is a driven wheel, and 408 is a belt supporting plate.

Detailed Description

The invention is further elucidated with reference to the accompanying drawings.

As shown in fig. 2A to 2B, the motor shaft hole machining apparatus of the present invention includes a bed body a, a mechanism main body B, a cutting fluid tank C, a spindle coolant tank D, and a distribution box E, wherein the mechanism main body B is mounted on the bed body a, the distribution box E is mounted on one side of the bed body a, and the cutting fluid tank C and the spindle coolant tank D are mounted in the bed body a; mechanism main part B includes feed subassembly 1, drilling subassembly 2, station conversion subassembly 3 and conveyer belt 4, and wherein drilling subassembly 2 installs on the table surface of bed body A, and station conversion subassembly 3 installs on drilling subassembly 2, and conveyer belt 4 installs in the side of station conversion subassembly 3, and feed subassembly 1 installs in conveyer belt 4 top, with station conversion subassembly 3 butt joint.

The bed body A is used for supporting the mechanism main body B, a wire groove and a cutting fluid pipeline which cross the bed body are arranged on the bed body, and the wire groove is used for guiding a circuit of the distribution box E and an electromagnetic valve air path below the bed body onto the mechanism main body. The cutting fluid box body C and the main shaft cooling fluid box body D are arranged in the interlayer at the lower part of the bed body. The bed body is formed by casting, a through hole leading to the lower part is formed in the surface of the bed body, and cutting fluid flows to the cutting fluid box C below through the through hole to play a role in circularly cooling the drill bit. The main shaft cooling liquid box body D uses circulating cooling liquid to cool the electric main shaft, and overheating of the electric main shaft is prevented. The aluminum profile upright posts are arranged on the periphery of the bed body and used for installing the organic glass plate, and the machine tool protective cover plays a role. And the distribution box E is erected behind the machine tool and drives the whole set of equipment. Two material receiving boxes are respectively arranged at two sides of the bed body and used for storing finished products transmitted from the conveyor belt 4. The lower mechanism body portion is described in detail below.

As shown in fig. 3A to 3D, the mechanism body B includes a feeding assembly 1, a drilling assembly 2, a station conversion assembly 3, and a conveyor belt 4, and the four components are all fixed on the table surface of the bed body.

As shown in fig. 4A to 4D, the feeding assembly 1 includes a base 101, a V-groove guide rail 104, a material pushing cylinder 118, a threaded cylinder 122, a servo motor 107, and a discharging cylinder 126, wherein the base 101 is fixed on the table top of the bed body, and the V-groove guide rail 104 is mounted on the base 101 through a base plate 102 and a guide rail seat 103; an optical fiber support 105 is also fixed on the guide rail seat 103, and an optical fiber connecting plate 123 and an optical fiber sensor 124 are arranged on the optical fiber support 105; the two sides of the optical fiber bracket 105 are respectively provided with a first bracket 106a to a second bracket 106b, a bin bottom plate 107 is fixed between the first bracket 106a to the second bracket 106b to form a hopper, and a workpiece is arranged on the bin bottom plate 107; a servo motor 107 is arranged on the bracket 106 at one side through a motor support 116, an output shaft of the servo motor 107 is provided with a distributing wheel 114 through a coupler 115 and a rotating shaft 113, the end surfaces at two sides of the distributing wheel 114 are provided with material baffle plates 112, the front end of the rotating shaft 113 is arranged on the first bracket 106a through a bearing 111 and is pressed tightly through a shaft end pressing plate 108, a bearing pressing cover 109 and an end cover 110; the pushing cylinder 118 is fixed on the guide rail seat 103 through a pushing cylinder seat 119, and the front end of the pushing cylinder 118 is provided with a push rod 121 and a threaded cylinder 122 through a connecting rod 120; a blanking cylinder 126 is arranged on one side of the base 101 through a blanking cylinder bracket 125, and a piston rod of the blanking cylinder 126 is connected with a blanking air claw 128 through an air claw connecting plate 127;

the feeding assembly is also provided with a distributing wheel lower baffle 129 and a distributing wheel upper baffle 130 which are arranged on the upper side and the lower side of the distributing wheel 114 and between the first bracket 106a and the second bracket 106 b; the feeding assembly further comprises a material reverse detection device, which is arranged on the upper baffle 130 of the material distributing wheel 114 and comprises a detection rod 132 and a proximity switch 136, wherein the proximity switch 136 is arranged on the upper baffle 130 of the material distributing wheel through a proximity switch bracket 135, one end of the detection rod 132 is abutted with the outer diameter of the reverse workpiece or the groove diameter of the normal workpiece, and when the reverse workpiece is abutted with the detection rod 132, the other end of the detection rod 132 triggers the proximity switch 136.

In this embodiment, all cylinders are made of brand name of Sudoku.

Before the equipment runs, a certain amount of products to be processed are manually placed into the hopper (because the products are divided into the front end and the back end, the products need to be manually placed into the hopper in the correct direction). The hopper is internally provided with a material distributing wheel which rotates periodically. The material distributing wheel is provided with arc grooves which are evenly distributed along the circumference, and a pair of arc grooves are respectively positioned right above and right below the motor in each rotation. At this point, a workpiece will drop into the slot directly above, with the slot directly below being aligned with the slot in the lower stop 129 of the feed wheel. The workpiece falls on the lower V-shaped groove guide rail through the long hole, and the motor rotates every time to finish the workpiece conveying process. When the lower optical fiber sensor 124 senses that the workpiece is on the V-groove guide rail 104, the rear material pushing cylinder 118 pushes forwards, the workpiece is pushed into the front jig hole through the push rod 121, and the push rod 121 and the threaded cylinder 122 are mounted at the front end of the piston rod of the material pushing cylinder 118 through the connecting rod 120 (the threaded cylinder 122 is mounted on the push rod 121). The purpose is that the workpiece can be displaced in two sections when pushed, and firstly, the workpiece is not pushed onto the positioning surface in the jig when the pushing cylinder 118 reaches the stroke end, but has a certain gap. And the screw cylinder 122 in front pushes the workpiece to move for the second section again, so that the workpiece is jacked on the positioning surface of the jig, and the axial position of the workpiece is ensured to be accurate. Because the thrust of the material pushing cylinder 118 is not applied to the jig positioning surface, only the thrust of the thread cylinder 122 pushes the workpiece against the jig positioning surface. Therefore, the pressure applied to the workpiece impacting the positioning surface of the jig can be greatly reduced. After the workpiece is in place, the pusher cylinder 118 retracts to wait for the next workpiece to be in place.

The feed reverse detection device is provided on the feed wheel upper flap 130, while the feed wheel lower flap 129 is designed to be manually openable (a flip flap). The principle of material reverse detection is as follows: the detection position corresponds exactly to the indexing position of the circular arc groove of the distributing wheel 114. When the dispensing wheel 114 rotates the workpiece to this position, the workpiece will push up the detection rod 132 (the detection rod 132 is reset by the spring 133). If the workpiece orientation is reversed, the sensing bar 132 contacts the outer diameter of the workpiece and conversely the groove diameter of the workpiece, the upper feed proximity switch 136 is triggered by the difference in height between the outer diameter of the workpiece and the groove diameter of the workpiece. When the workpiece is inverted, the upper feed proximity switch 136 is triggered because the detection rod 132 is raised to a height greater than the height of the upright workpiece. And because the servo motor 117 is triggered by a pulse signal every time it is indexed (the motor rotates a fixed angle every time it receives a fixed amount of pulse signal). When the proximity switch feeding proximity switch 136 of material reversal detection is switched on, the equipment stops and gives an alarm after the lower motor servo motor 117 receives two pulse signals, at the moment, the detected workpiece just stops at the movable baffle of the lower baffle 129 of the material distribution wheel, the lower baffle 129 of the material distribution wheel needs to be opened manually, and the equipment is restarted after the workpiece is taken out. The purpose of material reversal detection is to prevent the work piece from being reversed by manual error to cause waste.

Meanwhile, the feeding assembly has a blanking function, and after one workpiece is machined, the air cylinder of the station conversion assembly drives the jig assembly above the station conversion assembly to move. And moving the jig for processing the workpiece to a blanking position for blanking, moving the other jig to a processing position for repeating the feeding processing process (the two jigs alternately and circularly carry out feeding processing and blanking). When the jig reaches the blanking position, the blanking cylinder 126 drives the blanking air claw 128 to extend out to clamp the workpiece, then the diaphragm chuck of the jig is loosened, and the blanking cylinder 126 retracts and drives the blanking air claw to draw the workpiece out of the jig 302. After the blanking air cylinder 126 is reset, the blanking air claw 128 is opened, and the workpiece falls on the lower conveyor belt 4 and is conveyed to a finished product box outside the equipment.

The feeding assembly 1 is applied to a mechanism body of motor shaft hole machining equipment, the mechanism body further comprises a drilling assembly 2, a station conversion assembly 3 and a conveyor belt 4, wherein the feeding assembly 1, the drilling assembly 2 and the station conversion assembly 3 are all arranged on a working table top of a bed body A, and the conveyor belt 4 is arranged on the side edge of the station conversion assembly 3 and right below a blanking clamping jaw.

The feeding assembly 1 is matched with the station conversion assembly 3 to finish automatic feeding of the station conversion assembly 3, the traditional manual feeding operation mode is replaced, the efficiency is greatly improved, the feeding is accurate in place, the labor intensity of operators is reduced, and the rejection rate is reduced.

The invention relates to a drilling assembly of motor shaft hole processing equipment, namely a drilling assembly, which comprises a Z-axis base 201, a linear guide rail assembly 204 (the embodiment adopts an upper silver linear guide rail), an electric main shaft 211 push rod assembly and a cylinder 219, wherein the Z-axis base 201 is fixed on the table surface of a bed body, the linear guide rail assembly 204 is fixed on the Z-axis base 201 through a guide rail seat 202, and a sliding table base plate 205 is arranged on a sliding block of the linear guide rail assembly 204; the electric spindle 211 is installed in a circular ring of a spindle seat 212, and the spindle seat 212 is fixedly installed on the sliding table base plate 205 through a spindle backing plate 210; the push rod assembly is installed at the front end of a piston rod of a Z-axis cylinder 219, and the Z-axis cylinder 219 is installed at one side of the end part of the guide rail seat 202 through a cylinder seat 217.

The push rod assembly comprises a first push rod 213 fixed below the sliding table base plate 205 and connected with a second push rod 214 through a bolt 216, the second push rod 214 is connected with a joint 218 through a hinge pin 215, and the joint 218 is installed at the front end of a piston rod of a Z-axis cylinder 219 through a through hole in the middle of a cylinder base 217.

The invention also comprises a hydraulic damper 208 and a damper support 209, wherein the damper support 209 is arranged on one side of the sliding table base plate 205, the hydraulic damper 208 is fixed from the front side and the rear side through the damper support 209, and the proximity switch support 206 and the proximity switch 207 are arranged on the other side of the sliding table base plate 205.

After the workpiece is loaded, the jig 302 clamps the workpiece, at this time, the electric spindle 211 drives the drill bit to rotate, and the piston rod of the Z-axis cylinder 219 drives the electric spindle 211 above the sliding table to move forward through the push rod assembly to start drilling. The drilling depth is ensured by the Z-axis approach switch 207, and when the Z-axis approach switch 207 approaches the front stopper 203, the Z-axis approach switch 207 is turned on, indicating that the set drilling depth has been reached. At this time, the Z-axis cylinder 219 drives the electric spindle 211 above the slide table to retreat, and the processing of one workpiece is completed.

The hydraulic damper 208 (such as an AC 1008-02 hydraulic buffer, which is commercially available) plays a role of buffering and decelerating, and can change the quick movement of the cylinder into a uniform movement for cutting. When the cylinder drives the main shaft to move forward, the contact in front of the hydraulic damper 208 is pressed on the limiting block 203, and along with the movement of the cylinder, the contact is gradually pressed into the inside, and the pressure oil in the inside can generate reaction force to the movement of the main shaft.

The feeding assembly is applied to a mechanism body of motor shaft hole processing equipment, the mechanism body further comprises a drilling assembly 2, a station conversion assembly 3 and a conveyor belt 4, wherein the feeding assembly 1, the drilling assembly 2 and the station conversion assembly 3 are all arranged on a working table top of a bed body A, and the conveyor belt 4 is arranged on the side edge of the station conversion assembly 3 and right below a blanking clamping jaw.

The drilling assembly drives the electric spindle 211 to feed along the Z axis, a drilling process is executed, the drilling depth is automatically controlled through the Z axis approach switch 207, automatic continuous batch processing is realized by matching with a feeding device and a discharging device of motor shaft hole processing equipment, the action is continuous, the working time is saved, and the equipment process requirement of automatic production is met.

As shown in fig. 6A to 6D, the station conversion assembly includes jigs 302, linear guide rail assemblies 307 and an X-axis cylinder 310, wherein the linear guide rail assemblies 307 are fixed on the table top of the bed body through guide rail seats 313, sliding table substrates 303 are mounted on the sliding blocks of the linear guide rail assemblies 307, the two sets of jigs 302 are vertically mounted on the sliding table substrates 303 in parallel through jig brackets 301, and the sliding table substrates 303 are fixedly mounted on the sliding blocks of the linear guide rail assemblies 307; the cylinder 310 is attached to the rail holder 313 side via the first baffle 309a and the first block 308 a.

The station switching assembly 3 further includes first to second hydraulic buffers 312a to 312b and first and second limit screws 311a to 311b, the first hydraulic buffer 312a and the first limit screw 311a are mounted on one end of the rail base 313 through a first barrier 309a and a first spacer 308a, and the second hydraulic buffer 312b and the second limit screw 311b are mounted on the other end of the rail base 313 through a second barrier 309b and a second spacer 308 b. A bumper stop 305 and a connecting block 306 are also provided below the slide of the linear guide assembly 307.

The hydraulic buffer adopts the outsourcing standard component, and the buffer is touched to the slip table during cylinder operation, impresses buffer the place ahead contact, carries out the buffering of slowing down through the reaction force of buffer internal pressure oil, avoids stop screw and slip table to receive too big impact force. Generally, the air cylinder with a large cylinder diameter needs to be equipped with the device for buffering.

As shown in fig. 7A to 7B, the jig 302 includes a positioning block 30201, a diaphragm grip 30202, a pressing piece 30203, cylinder blocks 30204 and 30205, a front end cap, a piston 30206, and a rear end cap 30207, wherein the positioning block 30201 is mounted on the diaphragm grip 30202, the diaphragm grip 30202 is mounted on the cylinder block 30204, the pressing piece 30203 is mounted on the piston 30206 through an inner hole of the cylinder block 30204, the front end cap 30205 is connected to the cylinder block 30204 in an interference manner, the rear end cap 30207 is connected to the cylinder block 30204, and the piston 30206 is disposed between the rear end cap 30207 and the front end cap 302.

Two closed cavities are formed by a front end cover 30205 and a rear end cover 30207 on the left and right sides of a piston 30206, two air inlets are formed in the rear end cover 30207 and respectively communicated with the cavities on the two sides of the piston 30206, the piston 30206 is moved left and right by compressed air (the principle is the same as that of a cylinder, only the movement distance is small, and fine movement is performed), when the piston 30206 moves towards the rear end cover 30207, a pressing sheet 30203 fixed on the piston 30206 is driven to press a cylinder body 30204, so that the cylinder 30204 is slightly elastically deformed, a spigot at the front end of the cylinder 30204 is slightly retracted, and a diaphragm chuck 30202 mounted on the spigot of the cylinder 30204 is driven to clamp a workpiece. When the piston 30206 moves in the direction of the front end cap 30205, the force is removed and the diaphragm cartridge 30202 is released. The clamping and the opening of the diaphragm clamp 30202 can be realized by controlling the air inlet and the air outlet connected with the air inlet through the electromagnetic valve. Normally, the membrane clamp 30202 is in an open state, and when a workpiece is pushed into the membrane clamp 30202 by the pusher cylinder 118 of the feeding assembly, the membrane clamp 30202 clamps the workpiece and waits for processing.

The working process and principle of the jig 302 are as follows:

the feeding of the piston rod of the X-axis cylinder 310 drives the jig support 301 to move left and right back and forth, so that the two jigs 302 on the jig support 301 correspond to the machining center positions of the electric spindle respectively, and the electric spindle is machined alternately. When a jig is located at a processing position, the other jig is located at a discharging position, when the jig reaches the discharging position, a discharging cylinder in the feeding assembly drives a discharging gas claw to extend out to clamp a workpiece, then the jig 302 is opened, and the workpiece is drawn out of the jig 302 by the discharging gas claw and placed on the lower conveyor belt 4.

Station conversion components is applied to in the mechanism main part of motor shaft hole processing equipment, and the mechanism main part still includes feed subassembly 1, drilling subassembly 2 and conveyer belt 4, and wherein feed subassembly 1, drilling subassembly 2, station conversion components 3 all install on the table surface of bed body A, and conveyer belt 4 is installed in the side of station conversion components 3, under the unloading clamping jaw.

As shown in fig. 8A to 8B, the conveyor belt 4 includes a motor 401, a support 402, a flat belt 403, a driving wheel 404, a support shaft 405, a tensioning mechanism 406, a driven wheel 407, and a belt supporting plate 408, wherein the driving wheel 404 and the driven wheel 407 are located between the two supports 402, the flat belt 403 is sleeved on the driving wheel 404 and the driven wheel 407, the motor 401 is fixed at one end of the support 402 and connected to the driving wheel 404, the support shaft 405 is fixed at the other end of the support 402 and connected to the driving wheel 404, the tensioning mechanism 406 is installed at the end of the support 402 and connected to the driven wheel 407, and the belt supporting plate 408 is.

The transmission belt 4 is located right below the retraction position of the blanking air claw 128, is driven by a speed reduction motor and is responsible for conveying the processed workpiece to a material receiving box outside the bed body.

The action process of the invention is as follows:

after the equipment is powered on and started, the control unit controls each part assembly to return to the original point;

after the workpiece is ready, a certain amount of the workpiece to be processed is manually placed into a hopper by the feeding assembly 1 in the mechanism main body B, the feeding assembly 1 works to distribute materials, and the workpiece is tightly pressed on the positioning surface of the jig, so that the axial position of the workpiece is accurate;

after the workpiece is fed, the jig clamps the workpiece, the electric spindle 211 in the drilling assembly drives the drill bit to rotate to drill the workpiece, and after the set drilling depth is reached, the electric spindle 211 retreats to finish the machining of one workpiece;

the jig bracket 301 in the station conversion assembly 3 moves back and forth left and right, so that 2 groups of jigs 302 on the jig bracket 301 respectively correspond to the machining center positions of the electric spindle to perform machining alternately; after the processing is finished, the workpiece is drawn out of the jig 302 and placed on the lower conveyor belt 4;

the transmission belt 4 is located right below the retraction position of the blanking air claw 128, is driven by a speed reduction motor, and is responsible for conveying the processed workpiece to a material receiving box outside the bed body, so that a workpiece processing process is completed.

The feeding assembly 1, the drilling assembly 2, the station conversion assembly 3 and the conveyor belt 4 work cooperatively under the control of the control unit, run automatically, replace the traditional manual operation processing mode, greatly improve the efficiency, have high processing precision, reduce the labor intensity of operators, reduce the rejection rate and meet the requirement of large-scale automatic batch production.

Claims (10)

1. The utility model provides a motor shaft hole processing equipment which characterized in that: the cutting machine comprises a bed body, a mechanism main body, a cutting fluid box body, a main shaft cooling fluid box body and a distribution box, wherein the mechanism main body is arranged on the bed body; the mechanism main part includes feed assembly, drilling subassembly, station conversion subassembly and conveyer belt, and wherein feed assembly, drilling subassembly, station conversion subassembly are all installed on the table surface of the bed body, and the conveyer belt is installed in station conversion subassembly's side, under the unloading clamping jaw.

2. The motor shaft hole processing apparatus according to claim 1, wherein: the feeding assembly comprises a base, a V-shaped groove guide rail, a material pushing cylinder, a threaded cylinder, a servo motor and a discharging cylinder, wherein the base is fixed on the table top of the bed body, and the V-shaped groove guide rail is arranged on the base through a base plate and a guide rail seat; an optical fiber support is also fixed on the guide rail seat, and an optical fiber connecting plate and an optical fiber sensor are arranged on the optical fiber support; the two sides of the optical fiber support are respectively provided with a first support and a second support, a bin bottom plate is fixed between the first support and the second support to form a hopper, and a workpiece is arranged on the bin bottom plate; the servo motor is arranged on a bracket on one side through a motor support, an output shaft of the servo motor is provided with a distributing wheel through a coupler and a rotating shaft, the end faces of two sides of the distributing wheel are provided with striker plates, and the front end of the rotating shaft is arranged on a first bracket through a bearing and is pressed tightly through a shaft end pressing plate, a bearing pressing cover and an end cover; the pushing cylinder is fixed on the guide rail seat through a pushing cylinder seat, and the front end of the pushing cylinder is provided with a push rod and a threaded cylinder through a connecting rod; the blanking cylinder is arranged on one side of the base through a blanking cylinder support, and a piston rod of the blanking cylinder is connected with a blanking air claw through an air claw connecting plate.

3. The motor shaft hole processing apparatus according to claim 2, wherein: the material distributing device is also provided with a material distributing wheel lower baffle and a material distributing wheel upper baffle which are arranged between the upper side and the lower side of the material distributing wheel and the first bracket and the second bracket.

4. The motor shaft hole processing apparatus according to claim 3, wherein: the anti-detection device of material still has, installs on the branch material takes turns the overhead gage of material wheel, including detection bar and proximity switch, wherein proximity switch passes through the proximity switch support mounting on the branch material takes turns the overhead gage, and detection bar one end is put the external diameter of work piece or the groove footpath butt of just putting the work piece with turning over, and when putting work piece and detection bar butt, the detection bar other end touches proximity switch.

5. The motor shaft hole processing apparatus according to claim 1, wherein: the drilling assembly comprises a Z-axis base, a linear guide rail assembly, an electric main shaft, a first push rod, a second push rod and a cylinder, wherein the Z-axis base is fixed on the table top of the bed body; the electric spindle is arranged in a spindle seat, and the spindle seat is fixedly arranged on the sliding table base plate through a spindle backing plate; the first push rod is fixed below the sliding table base plate and connected with the second push rod through a bolt, the second push rod is connected with the joint through a hinge pin, the joint is installed at the front end of a piston rod of the Z-axis cylinder, and the Z-axis cylinder is installed on one side of the end part of the guide rail seat through a cylinder seat.

6. The motor shaft hole machining apparatus drilling assembly of claim 5, wherein: the push rod assembly comprises a first push rod fixed below the sliding table base plate and connected with a second push rod through a bolt, the second push rod is connected with a joint through a hinge pin, and the joint penetrates through a through hole in the middle of the cylinder block and is installed at the front end of a piston rod of the Z-axis cylinder.

7. The motor shaft hole processing apparatus according to claim 1, wherein: the station conversion assembly comprises jigs, linear guide rail assemblies and an X-axis cylinder, wherein the linear guide rail assemblies are fixed on the table top of the bed body through guide rail seats, sliding table base plates are arranged on sliding blocks of the linear guide rail assemblies, the two groups of jigs are vertically arranged on the sliding table base plates in parallel through jig supports, and the sliding table base plates are fixedly arranged on the sliding blocks of the linear guide rail assemblies; the cylinder is installed in guide rail seat one side through first baffle and first cushion.

8. The motor shaft hole processing apparatus according to claim 7, wherein: the hydraulic buffer and the first limit screw are arranged at one end of the guide rail seat through a first baffle and a first cushion block, and the second hydraulic buffer and the second limit screw are arranged at the other side of the guide rail seat through a second baffle and a second cushion block.

9. The motor shaft hole processing apparatus according to claim 7, wherein: and a buffer stop block and a connecting block are also arranged below the sliding block of the linear guide rail assembly.

10. The motor shaft hole processing apparatus according to claim 7, wherein: the jig comprises a positioning block, a diaphragm chuck, a pressing sheet, a cylinder body front end cover, a piston and a rear end cover, wherein the positioning block is installed on the diaphragm chuck, the diaphragm chuck is installed on the cylinder body, the pressing sheet penetrates through an inner hole of the cylinder body and is installed on the piston, the front end cover is in interference fit connection with the cylinder body, the rear end cover is connected with the cylinder body, and the piston is arranged between the rear end cover and the front end cover.

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