A motor shaft hole processing equipment

Abstract

The present invention discloses a motor shaft hole processing equipment, including a bed, a mechanism body, a cutting fluid box, a spindle coolant box and a distribution box, wherein the mechanism body is installed on the bed, the distribution box is installed on one side of the bed, and the cutting fluid box and the spindle coolant box are installed in the bed; the mechanism body includes a feeding assembly, a drilling assembly, a station conversion assembly and a conveyor belt, wherein the feeding assembly, the drilling assembly and the station conversion assembly are all installed on the working table of the bed, and the conveyor belt is installed on the side of the station conversion assembly, directly below the unloading clamp. The present invention greatly improves the processing accuracy, can ensure that the shaft hole is concentric with the shaft and the angle of the cone angle is controlled within the allowable tolerance range, and reduces the scrap rate; it replaces the traditional manual operation processing method, greatly improves the efficiency, has high processing accuracy, reduces the labor intensity of the operator, and reduces the scrap rate; it realizes automatic loading and unloading, the equipment runs uninterruptedly, the production rhythm is stable, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to a workpiece processing device, in particular to a motor shaft hole processing device. Background Art

[0002] The motor shaft is an important part of the motor product. The machining accuracy and quality of the motor shaft directly affect the overall quality and service life of the motor. Figure 1A-1B As shown in the figure, the traditional motor shaft tail taper hole processing is usually done by ordinary lathes through manual operation, which requires manual loading into the fixture, poor stability, low efficiency, and easy to find scrap, resulting in high scrap rate, low processing accuracy, and high labor intensity. The main disadvantages are divided into two aspects:

[0003] Feeding

[0004] 1. Low efficiency: Frequent repetitive work will make people tired, and their mental state will also affect production efficiency, thus affecting the feeding efficiency;

[0005] 2. High scrap rate: Since the product has positive and negative directions, once the operator is negligent, it will cause scrap, and the external influence will also cause the operator to be distracted;

[0006] 3. Unable to work continuously for a long time: Manual operation will inevitably require rest time, causing the equipment to stop production;

[0007] 4. Low precision: Manual operation is not as stable as machine operation and is prone to dimensional deviation.

[0008] Processing

[0009] 1. Continuous processing is not possible. After each workpiece is processed, it needs to be removed and the next workpiece needs to be clamped. The processing cannot be carried out continuously, the interval time is long, the labor intensity of personnel is high, and the production efficiency is low;

[0010] 2. The equipment has poor stability, large dimensional deviation, and is prone to out-of-tolerance and resulting in waste;

[0011] 3. The clamping efficiency of the chuck is low and cannot meet the needs of continuous operation;

[0012] 4. The processed workpiece needs to be unloaded manually, wasting a lot of time. Summary of the invention

[0013] Aiming at the shortcomings of the prior art in the machining process of the tail tapered hole of the motor shaft product, such as high labor intensity and low efficiency, the problem to be solved by the present invention is to provide a motor shaft hole machining equipment which can automatically load and unload materials, perform continuous machining and greatly improve work efficiency.

[0014] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0015] The present invention discloses a motor shaft hole processing device, comprising a bed, a mechanism body, a cutting fluid box, a spindle coolant box and a distribution box, wherein the mechanism body is installed on the bed, the distribution box is installed on one side of the bed, and the cutting fluid box and the spindle coolant box are installed in the bed; the mechanism body comprises a feeding assembly, a drilling assembly, a station conversion assembly and a conveyor belt, wherein the feeding assembly, the drilling assembly and the station conversion assembly are all installed on the working table of the bed, and the conveyor belt is installed on the side of the station conversion assembly, directly below the unloading clamp.

[0016] The feeding assembly includes a base, a V-groove guide rail, a pushing cylinder, a threaded cylinder, a servo motor and a feeding cylinder, wherein the base is fixed on the bed surface, and the V-groove guide rail is installed on the base through a base plate and a guide rail seat; an optical fiber bracket is also fixed on the guide rail seat, and an optical fiber connecting plate and an optical fiber sensor are installed on the optical fiber bracket; the first and second brackets are respectively installed on both sides of the optical fiber bracket, and the bottom plate of the silo is fixed between the first and second brackets to form a hopper, and the workpiece is placed on the bottom plate of the silo; the servo motor is installed on one side of the bracket through a motor support, and a dividing wheel is installed on the output shaft of the servo motor through a coupling and a rotating shaft, and a material blocking plate is installed on the end surfaces of both sides of the dividing wheel, and the front end of the rotating shaft is installed on the first bracket through a bearing, and is pressed by a shaft end pressure plate, a bearing pressure cover and an end cover; the pushing cylinder is fixed on the guide rail seat through a pushing cylinder seat, and a push rod and a threaded cylinder are installed on the front end of the pushing cylinder through a connecting rod; the feeding cylinder is installed on one side of the base through a feeding cylinder bracket, and the piston rod of the feeding cylinder is connected to a feeding claw through an air claw connecting plate.

[0017] The feeding assembly also has a lower baffle plate of the material distribution wheel and an upper baffle plate of the material distribution wheel, which are installed on the upper and lower sides of the material distribution wheel and between the first and second brackets;

[0018] It also has a material reversal detection device, which is installed on the upper baffle of the dividing wheel, and includes a detection rod and a proximity switch, wherein the proximity switch is installed on the upper baffle of the dividing wheel through a proximity switch bracket, and one end of the detection rod abuts against the outer diameter of the inverted workpiece or the groove diameter of the upright workpiece. When the inverted workpiece abuts against the detection rod, the other end of the detection rod touches the proximity switch.

[0019] The drilling assembly includes a Z-axis base, a linear guide assembly, an electric spindle, first and second push rods and a cylinder, wherein the Z-axis base is fixed on the bed surface, the linear guide assembly is fixed to the Z-axis base through a guide seat, and a slide base plate is installed on the slider of the linear guide assembly; the electric spindle is installed in the spindle seat, and the spindle seat is fixed to the slide base plate through a spindle pad; the first push rod is fixed under the slide base plate and connected to the second push rod through a pin, the second push rod is connected to the joint through a hinge pin, the joint is installed at the front end of the piston rod of the Z-axis cylinder, and the Z-axis cylinder is installed on one side of the end of the guide seat through the cylinder seat.

[0020] The push rod assembly includes a first push rod fixed under the slide base plate and connected to the second push rod through a pin, the second push rod is connected to the joint through a hinge pin, and the joint passes through the middle through hole of the cylinder seat and is installed at the front end of the piston rod of the Z-axis cylinder.

[0021] The workstation conversion assembly includes a jig, a linear guide assembly and an X-axis cylinder, wherein the linear guide assembly is fixed to the bed surface through a guide seat, the slide base plate is installed on the slider of the linear guide assembly, two sets of jigs are vertically installed in parallel on the slide base plate through jig brackets, and the slide base plate is fixedly installed on the slider of the linear guide assembly; the cylinder is installed on one side of the guide seat through the first baffle and the first pad.

[0022] The workstation conversion assembly also includes first and second hydraulic buffers and first and second limit screws. The first hydraulic buffer and the first limit screw are installed on one end of the guide rail seat through the first baffle and the first pad, and the second hydraulic buffer and the second limit screw are installed on the other side of the guide rail seat through the second baffle and the second pad.

[0023] A buffer stopper and a connecting block are also provided below the slider of the linear guide assembly.

[0024] The fixture includes a positioning block, a diaphragm chuck, a pressing plate, a front end cover of a cylinder body, a piston and a rear end cover, wherein the positioning block is mounted on the diaphragm chuck, the diaphragm chuck is mounted on the cylinder body, the pressing plate passes through the inner hole of the cylinder body and is mounted on the piston, the front end cover is interference connected to the cylinder body, the rear end cover is connected to the cylinder body, and the piston is arranged between the rear end cover and the front end cover.

[0025] The present invention has the following beneficial effects and advantages:

[0026] 1. The present invention applies automated processing to the processing technology of various mechanical parts, greatly improving the processing accuracy, especially the processing of the tapered hole at the tail of the motor shaft product, which can ensure that the shaft hole is concentric with the shaft and the angle of the taper is controlled within the allowable tolerance range, thereby reducing the scrap rate; it replaces the traditional manual processing method, greatly improves the efficiency, has high processing accuracy, reduces the labor intensity of operators, and reduces the scrap rate; it realizes automatic loading and unloading, uninterrupted operation of the equipment, stable production rhythm, and improved production efficiency.

[0027] 2. The present invention uses an automatic loading mode to process the drilling process as a separate process. The drilling depth is guaranteed by a sensor, and the linear accuracy is guaranteed by a precision linear guide rail. Automatic loading and unloading are coordinated to achieve efficient processing of the tail tapered hole. At the same time, two identical fixtures are used to alternately load and unload, and the cylinder drives the slide to reciprocate so that the two fixtures alternately reach the loading station and the unloading station, which greatly improves production efficiency.

[0028] 3. The present invention adopts a self-made starting diaphragm chuck fixture, which is equipped with a pneumatic diaphragm chuck. It is opened and closed through communication with the feeding system and the processing system, which meets the needs of fully automatic operation of the equipment, ensures the stability of workpiece clamping, directly determines the processing accuracy of the workpiece, and has the advantages of stable processing rhythm, high precision, and high efficiency.

[0029] 4. The present invention has a material reverse detection function, which can automatically identify the positive and reverse directions of the workpiece and reduce the scrap rate; the motor shaft hole depth processed by the equipment of the present invention meets the process requirements 100%, saving costs and achieving zero rework. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1A A schematic diagram of workpiece processing according to the present invention;

[0031] Figure 1B for Figure 1A A partial enlarged view of

[0032] Figure 2A The first is a perspective view of the overall structure of the motor shaft hole processing equipment of the present invention;

[0033] Figure 2B The second is a perspective view of the overall structure of the motor shaft hole processing equipment of the present invention;

[0034] Figure 3A It is a stereoscopic diagram of the combined structure of the feeding assembly, the station conversion assembly, the drilling assembly and the conveyor belt in the present invention;

[0035] Figure 3B It is a front view of the combined structure of the feeding assembly, the station conversion assembly, the drilling assembly and the conveyor belt in the present invention;

[0036] Figure 3C for Figure 3B A top view of

[0037] Figure 3D for Figure 3B Left view of

[0038] Figure 4A It is an exploded view of the feeding assembly structure in the present invention;

[0039] Figure 4B It is a three-dimensional diagram of the structure of the feeding assembly in the present invention;

[0040] Figure 4C This is a front view of the structure of the feeding component in the present invention;

[0041] Figure 4D for Figure 4C Left view of

[0042] Figure 5A It is an exploded view of the drilling assembly structure in the present invention;

[0043] Figure 5B It is a three-dimensional diagram of the drilling assembly structure of the present invention;

[0044] Figure 5C This is a front view of the drilling assembly structure of the present invention;

[0045] Figure 5D for Figure 5C A top view of

[0046] Fig. 6A It is an exploded view of the workstation conversion assembly structure in the present invention;

[0047] Figure 6B It is a three-dimensional diagram of the structure of the workstation conversion assembly in the present invention;

[0048] Figure 6C This is a front view of the workstation conversion assembly structure in the present invention;

[0049] Fig.6D for Figure 6C A top view of

[0050] Fig. 7A An exploded diagram of the fixture structure involved in the present invention;

[0051] Figure 7B It is a cross-sectional view of the fixture structure;

[0052] Fig. 8A It is an exploded view of the conveyor belt structure in the present invention;

[0053] Figure 8B It is a schematic diagram of the conveyor belt structure in the present invention.

[0054] Among them, A is the bed, B is the main body of the mechanism, C is the cutting fluid box, D is the spindle coolant box, and E is the distribution box;

[0055] 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-groove guide rail, 105 is an optical fiber bracket, 106a-106b are the first and second brackets, 107 is a silo bottom plate, 108 is a shaft end pressure plate, 109 is a bearing pressure cover, 110 is an end cover, 111 is a bearing, 112 is a material blocking plate, 113 is a rotating shaft, 114 is a material dividing wheel, 115 is a coupling, 116 is a motor support, 117 is a servo motor, 118 is a push cylinder, 119 is Push 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 feed cylinder bracket, 126 is a feed cylinder, 127 is an air claw connecting plate, 128 is a feed claw, 129 is a lower baffle plate of a feed wheel, 130 is an upper baffle plate of a feed wheel, 131 is a material reverse detection mounting plate, 132 is a detection rod, 133 is a spring, 134 is a detection rod support, 135 is a feed proximity switch bracket, and 136 is a feed proximity switch;

[0056] 2 is a drilling assembly, 201 is a Z-axis base, 202 is a Z-axis guide rail seat, 203 is a limit block, 204 is a linear guide rail assembly, 205 is a slide base plate, 206 is a Z-axis proximity switch bracket, 207 is a Z-axis proximity switch, 208 is a hydraulic damper, 209 is a damper bracket, 210 is a spindle pad, 211 is an electric spindle, 212 is a spindle seat, 213 is a first push rod, 214 is a second push rod, 215 is a hinge pin, 216 is a latch, 217 is a Z-axis cylinder seat, 218 is a joint, and 219 is a Z-axis cylinder;

[0057] 3 is a workstation conversion assembly, 301 is a fixture bracket, 302 is a fixture, 30201 is a positioning block, 30202 is a diaphragm chuck, 30203 is a pressing plate, 30204 is a cylinder body, 30205 is a front end cover, 30206 is a piston, 30207 is a rear end cover, 303 is a slide base plate, 304 is a limit screw block, 305 is a buffer block, 306 is a connecting block, 307 is a linear guide assembly, 308a-308b are the first and second pads, 309a-309b are the first and second baffles, 310 is an X-axis cylinder, 311a-311b are the first and second limit screws, 312a-312b are the first and second hydraulic buffers, and 313 is a guide seat;

[0058] 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 support plate. DETAILED DESCRIPTION

[0059] The present invention will be further described below in conjunction with the accompanying drawings.

[0060] like Figure 2A-2B As shown, a motor shaft hole processing equipment of the present invention includes a bed A, a mechanism body B, a cutting fluid box C, a spindle coolant box D and a distribution box E, the mechanism body B is installed on the bed A, the distribution box E is installed on one side of the bed A, the cutting fluid box C and the spindle coolant box D are installed in the bed A; the mechanism body B includes a feeding component 1, a drilling component 2, a station conversion component 3 and a conveyor belt 4, wherein the drilling component 2 is installed on the working table of the bed A, the station conversion component 3 is installed on the drilling component 2, the conveyor belt 4 is installed on the side of the station conversion component 3, and the feeding component 1 is installed above the conveyor belt 4 and docked with the station conversion component 3.

[0061] The bed A is used to support the main body B of the mechanism. The bed has a wire trough and cutting fluid pipeline across the bed. The wire trough is used to lead the line of the distribution box E and the gas path of the solenoid valve under the bed to the main body of the mechanism. The cutting fluid box C and the spindle coolant box D are built into the interlayer at the bottom of the bed. The bed is cast and has a through hole leading to the bottom on the surface. The cutting fluid flows to the cutting fluid box C below through the through hole, which plays a role in circulating cooling of the drill bit. The spindle coolant box D uses circulating coolant to cool the electric spindle to prevent the electric spindle from overheating. Aluminum profile columns are installed around the bed for installing organic glass plates, which serve as a protective cover for the machine tool. The distribution box E stands behind the machine tool to drive the entire set of equipment. Two receiving boxes are set on both sides of the bed to store the finished products transmitted from the conveyor belt 4. The main body of the mechanism is introduced in detail below.

[0062] like Figures 3A to 3D As shown, the mechanism body B includes a feeding component 1, a drilling component 2, a station conversion component 3 and a conveyor belt 4, and the four components are all fixed on the bed surface.

[0063] like Figures 4A to 4DAs shown, the feeding assembly 1 includes a base 101, a V-groove guide rail 104, a push cylinder 118, a threaded cylinder 122, a servo motor 107 and a feed cylinder 126, wherein the base 101 is fixed on the bed surface, and the V-groove guide rail 104 is installed on the base 101 through the base plate 102 and the guide rail seat 103; an optical fiber bracket 105 is also fixed on the guide rail seat 103, and an optical fiber connecting plate 123 and an optical fiber sensor 124 are installed on the optical fiber bracket 105; the first and second brackets 106a~106b are respectively installed on both sides of the optical fiber bracket 105, and the silo bottom plate 107 is fixed in the middle of the first and second brackets 106a~106b to form a hopper, and the workpiece is placed on the silo bottom plate 107; the servo motor 107 is installed through the motor support 116 Installed on one side bracket 106, the output shaft of the servo motor 107 is installed with a dividing wheel 114 through a coupling 115 and a rotating shaft 113, and a material blocking plate 112 is installed on the end surfaces of both sides of the dividing wheel 114. The front end of the rotating shaft 113 is installed on the first bracket 106a through a bearing 111, and is pressed by an axis end pressure plate 108, a bearing pressure 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 a pushing rod 121 and a threaded cylinder 122 are installed at the front end of the pushing cylinder 118 through a connecting rod 120; the unloading cylinder 126 is installed on one side of the base 101 through an unloading cylinder bracket 125, and the piston rod of the unloading cylinder 126 is connected to a unloading claw 128 through an claw connecting plate 127;

[0064] The feeding component also has a lower baffle plate 129 of the dividing wheel and an upper baffle plate 130 of the dividing wheel, which are installed on the upper and lower sides of the dividing wheel 114 and between the first and second brackets 106a and 106b; the feeding component also has a material reversal detection device, which is installed on the upper baffle plate 130 of the dividing wheel 114, including a detection rod 132 and a proximity switch 136, wherein the proximity switch 136 is installed on the upper baffle plate 130 of the dividing wheel through a proximity switch bracket 135, and one end of the detection rod 132 abuts against the outer diameter of the inverted workpiece or the groove diameter of the upright workpiece. When the inverted workpiece abuts against the detection rod 132, the other end of the detection rod 132 triggers the proximity switch 136.

[0065] In this embodiment, all cylinders are of the AirTac brand.

[0066] Before the equipment is put into operation, a certain amount of the product to be processed is manually placed into the hopper (since the product is divided into two ends, it needs to be placed into the hopper in the correct direction). There is a periodically rotating dividing wheel inside the hopper. The dividing wheel has arc grooves evenly distributed along the circumference. Each time the motor rotates, there will be a pair of arc grooves directly above and directly below. At this time, a workpiece will fall into the groove directly above, and the groove directly below will be aligned with the long hole of the lower baffle 129 of the dividing wheel. The workpiece will fall through the long hole onto the V-groove guide rail below, and the motor will complete the workpiece handling process once each rotation. When the optical fiber sensor 124 below senses that the workpiece is on the V-groove guide rail 104, the rear push cylinder 118 pushes forward, and the workpiece is pushed into the front fixture hole through the push rod 121. The push rod 121 and the threaded cylinder 122 are installed at the front end of the piston rod of the push cylinder 118 through the connecting rod 120 (the threaded cylinder 122 is installed on the push rod 121). Its purpose is to perform two stages of displacement when pushing the workpiece. First, when the push cylinder 118 reaches the end of the stroke, the workpiece is not pushed onto the positioning surface inside the fixture, but there is a certain gap. Then the second stage of displacement is pushed again by the threaded cylinder 122 in the front to push the workpiece onto the fixture positioning surface to ensure the accurate axial position of the workpiece. Since the thrust of the push cylinder 118 does not act on the fixture positioning surface, only the thrust of the threaded cylinder 122 pushes the workpiece onto the fixture positioning surface. This can greatly reduce the pressure on the workpiece that hits the fixture positioning surface. After the workpiece is in place, the push cylinder 118 is retracted to wait for the next workpiece to be in place.

[0067] The upper baffle plate 130 of the material dividing wheel is equipped with a material reversal detection device, and the lower baffle plate 129 of the material dividing wheel is designed to be manually opened (a movable baffle that can be flipped open). The material reversal detection principle is as follows: the detection position corresponds exactly to the arc groove indexing position of the material dividing wheel 114. When the material dividing wheel 114 drives the workpiece to rotate to this position, the workpiece will lift the detection rod 132 (the detection rod 132 is reset by the spring 133 provided with it). If the direction of the workpiece is reversed, the detection rod 132 contacts the outer diameter of the workpiece, and vice versa, it contacts the groove diameter of the workpiece, and the feed proximity switch 136 above is triggered by the height difference between the outer diameter of the workpiece and the groove diameter of the workpiece. When the workpiece is reversed, the height of the detection rod 132 is higher than the height of the upright workpiece, so the feed proximity switch 136 above is triggered. In addition, since the servo motor 117 is triggered by a pulse signal each time it rotates at an index (each time a fixed amount of pulse signals is received, the motor will rotate a fixed angle). When the proximity switch 136 of the material reverse detection is turned on, the equipment will stop and alarm after the lower motor servo motor 117 receives two pulse signals. At this time, the workpiece being detected is just stopped at the movable baffle of the lower baffle 129 of the material dividing wheel. It is necessary to manually open the lower baffle 129 of the material dividing wheel, take out the workpiece and restart the equipment. The purpose of material reverse detection is to prevent manual error from causing the workpiece to be reversed and cause waste.

[0068] At the same time, the feeding component also takes into account the unloading function. When a workpiece is processed, the cylinder of the station conversion component will drive the upper fixture component to move. The fixture that has processed the workpiece is moved to the unloading position for unloading, and the other fixture is moved to the processing position to repeat the above-mentioned loading and processing process (the two fixtures alternately cycle for loading and unloading). When the fixture reaches the unloading position, the unloading cylinder 126 drives the unloading claw 128 to extend and clamp the workpiece, and then the diaphragm chuck of the fixture is released, and the unloading cylinder 126 is retracted and drives the unloading claw to extract the workpiece from the fixture 302. After the unloading cylinder 126 is reset, the unloading claw 128 opens, and the workpiece will fall on the conveyor belt 4 below and be transported to the finished product box outside the equipment.

[0069] The feeding assembly 1 of the present invention is applied to the main body of the motor shaft hole processing equipment, and the main body also includes a drilling assembly 2, a workstation conversion assembly 3 and a conveyor belt 4, wherein the feeding assembly 1, the drilling assembly 2, and the workstation conversion assembly 3 are all installed on the working table of the bed A, and the conveyor belt 4 is installed on the side of the workstation conversion assembly 3, directly below the unloading clamp.

[0070] The feeding component 1 cooperates with the station conversion component 3 to complete the automatic feeding of the station conversion component 3, replacing the traditional manual feeding operation mode, greatly improving the efficiency, accurately feeding, reducing the labor intensity of operators, and reducing the scrap rate.

[0071] The present invention provides a drilling assembly of a motor shaft hole processing equipment, that is, a drilling assembly, comprising a Z-axis base 201, a linear guide assembly 204 (the present embodiment adopts a Hiwin linear guide), an electric spindle 211, a push rod assembly and a cylinder 219, wherein the Z-axis base 201 is fixed on the bed surface, the linear guide assembly 204 is fixed to the Z-axis base 201 through a guide seat 202, and a slide base plate 205 is installed on the slider of the linear guide 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 slide base plate 205 through a spindle pad 210; the push rod assembly is installed at the front end of the piston rod of the Z-axis cylinder 219, and the Z-axis cylinder 219 is installed on one side of the end of the guide seat 202 through a cylinder seat 217.

[0072] The push rod assembly includes a first push rod 213 fixed under the slide base plate 205 and connected to the second push rod 214 through a pin 216. The second push rod 214 is connected to a joint 218 through a hinge pin 215. The joint 218 passes through the middle through hole of the cylinder seat 217 and is installed at the front end of the piston rod of the Z-axis cylinder 219.

[0073] The present invention also includes a hydraulic damper 208 and a damper bracket 209. The damper bracket 209 is installed on one side of the slide base plate 205. The hydraulic damper 208 is fixed from the front and rear sides by the damper bracket 209. The proximity switch bracket 206 and the proximity switch 207 are installed on the other side of the slide base plate 205.

[0074] After the workpiece is loaded, the fixture 302 clamps the workpiece, and the electric spindle 211 drives the drill bit to start rotating. The piston rod of the Z-axis cylinder 219 drives the electric spindle 211 above the slide table to move forward through the push rod assembly to start drilling. The drilling depth is guaranteed by the Z-axis proximity switch 207. When the Z-axis proximity switch 207 is close to the front limit block 203, the Z-axis proximity 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, completing the processing of a workpiece.

[0075] The hydraulic damper 208 (such as AC1008-02 hydraulic buffer, which can be purchased online) plays a role in buffering and deceleration, and can turn the rapid movement of the cylinder into a uniform movement for cutting. When the cylinder drives the spindle to move forward, the contact in front of the hydraulic damper 208 presses on the limit block 203. As the cylinder moves, the contact is gradually pressed into the inside, and the pressure oil inside will produce a reaction force on the movement of the spindle.

[0076] The feeding assembly of the present invention is applied to the main body of the motor shaft hole processing equipment, and the main body also includes a drilling assembly 2, a workstation conversion assembly 3 and a conveyor belt 4, wherein the feeding assembly 1, the drilling assembly 2, and the workstation conversion assembly 3 are all installed on the work table of the bed A, and the conveyor belt 4 is installed on the side of the workstation conversion assembly 3, directly below the unloading clamp.

[0077] The drilling assembly drives the electric spindle 211 to feed along the Z axis to execute the drilling process. The drilling depth is automatically controlled by the Z axis proximity switch 207, and the loading and unloading devices of the motor shaft hole processing equipment are cooperated to realize automatic continuous batch processing. The action is continuous, which saves working hours and meets the equipment and process requirements of automated production.

[0078] like Figures 6A to 6D As shown, the workstation conversion assembly includes a fixture 302, a linear guide assembly 307 and an X-axis cylinder 310, wherein the linear guide assembly 307 is fixed to the bed surface through a guide seat 313, the slide base plate 303 is installed on the slider of the linear guide assembly 307, two sets of fixtures 302 are vertically installed in parallel on the slide base plate 303 through a fixture bracket 301, and the slide base plate 303 is fixedly installed on the slider of the linear guide assembly 307; the cylinder 310 is installed on one side of the guide seat 313 through a first baffle 309a and a first pad 308a.

[0079] The workstation conversion assembly 3 further includes the first and second hydraulic buffers 312a-312b and the first and second stop screws 311a-311b. The first hydraulic buffer 312a and the first stop screw 311a are installed on one end of the guide rail seat 313 through the first baffle 309a and the first cushion block 308a, and the second hydraulic buffer 312b and the second stop screw 311b are installed on the other end of the guide rail seat 313 through the second baffle 309b and the second cushion block 308b. A buffer stop block 305 and a connecting block 306 are also provided below the slider of the linear guide rail assembly 307.

[0080] The hydraulic buffer is a standard part purchased from outside. When the cylinder is running, the slide touches the buffer, pressing the front contact of the buffer inward, and the reaction force of the pressure oil inside the buffer is used to decelerate and buffer, so as to prevent the limit screw and the slide from receiving excessive impact force. Generally, cylinders with large cylinder diameters need to be equipped with this device for buffering.

[0081] like Figures 7A-7B As shown, the fixture 302 includes a positioning block 30201, a diaphragm clamp 30202, a pressure plate 30203, a cylinder body 30204, a front end cover 30205, a piston 30206 and a rear end cover 30207, wherein the positioning block 30201 is installed on the diaphragm clamp 30202, the diaphragm clamp 30202 is installed on the cylinder body 30204, the pressure plate 30203 passes through the inner hole of the cylinder body 30204 and is installed on the piston 30206, the front end cover 30205 is interference connected to the cylinder body 30204, the rear end cover 30207 is connected to the cylinder body 30204, and the piston 30206 is arranged between the rear end cover 30207 and the front end cover 30205.

[0082] The front cover 30205 and the rear cover 30207 form two closed cavities on the left and right sides of the piston 30206. There are two air inlets on the rear cover 30207, which lead to the cavities on both sides of the piston 30206 respectively. The piston 30206 is moved left and right by compressed air (the principle is the same as that of the cylinder, but the moving distance is very small, and it is slightly moved). When the piston 30206 moves toward the rear cover 30207, it will drive the pressing plate 30203 fixed on the piston 30206 to press the cylinder body 30204, so that the cylinder 30204 body produces a slight elastic deformation, resulting in a slight shrinkage of the stopper at the front end of the cylinder body 30204, thereby driving the diaphragm chuck 30202 installed on the stopper of the cylinder body 30204 to shrink and clamp the workpiece. When the piston 30206 moves toward the front cover 30205, the external force is removed and the diaphragm chuck 30202 is loosened. Therefore, the solenoid valve can be used to control the air inlet and outlet of the air inlet to achieve the clamping and opening of the diaphragm chuck 30202. Normally, the diaphragm chuck 30202 is in an open state. When the workpiece is pushed into the diaphragm chuck 30202 by the push cylinder 118 of the feeding assembly, the diaphragm chuck 30202 clamps the workpiece and waits for processing.

[0083] The working process and principle of fixture 302 are as follows:

[0084] The feeding of the piston rod of the X-axis cylinder 310 drives the fixture bracket 301 to move back and forth left and right, so that the two fixtures 302 on the fixture bracket 301 correspond to the machining center position of the electric spindle respectively, and are processed alternately. When one fixture is in the processing position, the other fixture is in the unloading position. When the fixture reaches the unloading position, the unloading cylinder in the feeding assembly drives the unloading claw to extend and clamp the workpiece, and then the fixture 302 opens, and the unloading claw extracts the workpiece from the fixture 302 and puts it on the conveyor belt 4 below.

[0085] The workstation conversion assembly is applied to the main body of the motor shaft hole processing equipment, and the main body also includes a feeding assembly 1, a drilling assembly 2, and a conveyor belt 4, wherein the feeding assembly 1, the drilling assembly 2, and the workstation conversion assembly 3 are all installed on the work table of the bed A, and the conveyor belt 4 is installed on the side of the workstation conversion assembly 3, directly below the unloading clamp.

[0086] like Figures 8A-8BAs shown, the conveyor belt 4 includes a motor 401, a bracket 402, a flat belt 403, a driving wheel 404, a support shaft 405, a tensioning mechanism 406, a driven wheel 407 and a belt support plate 408, wherein the driving wheel 404 and the driven wheel 407 are located in the middle of the two brackets 402, the flat belt sleeve 403 is on the driving wheel 404 and the driven wheel 407, the motor 401 is fixed at one end of the bracket 402 and connected to the driving wheel 404, the support shaft 405 is fixed at the other end of the bracket 402 and connected to the driving wheel 404, the tensioning mechanism 406 is installed at the end of the bracket 402 and connected to the driven wheel 407, and the belt support plate 408 is fixed in the middle of the two brackets 402.

[0087] The transmission belt 4 is located directly below the retracted position of the unloading air claw 128, and is driven by a reduction motor to transport the processed workpiece to the receiving box outside the bed.

[0088] The action process of the present invention is as follows:

[0089] After the equipment is powered on, the control unit controls each component to return to the origin;

[0090] After preparation, the feeding component 1 in the main body B of the mechanism manually puts a certain amount of the workpiece to be processed into the hopper, and the feeding component 1 works to divide the material and press the workpiece on the positioning surface of the fixture to ensure the accurate axial position of the workpiece;

[0091] After the workpiece is loaded, the fixture clamps the workpiece, and the electric spindle 211 in the drilling assembly drives the drill bit to start rotating to drill the workpiece. After reaching the set drilling depth, the electric spindle 211 retreats, completing the processing of a workpiece;

[0092] The fixture support 301 in the workstation conversion assembly 3 moves back and forth left and right, so that the two sets of fixtures 302 on the fixture support 301 correspond to the machining center positions of the electric spindle respectively, and the machining is performed alternately; after the machining is completed, the workpiece is pulled out of the fixture 302 and placed on the conveyor belt 4 below;

[0093] The transmission belt 4 is located directly below the retracted position of the unloading air claw 128 and is driven by a reduction motor. It is responsible for conveying the processed workpiece to the receiving box outside the bed, thus completing a workpiece processing process.

[0094] The feeding assembly 1, drilling assembly 2, station conversion assembly 3 and conveyor belt 4 of the present invention work together under the control of a control unit and operate fully automatically, replacing the traditional manual operation processing method, greatly improving the efficiency, increasing the processing accuracy, reducing the labor intensity of operators, reducing the scrap rate, and being able to meet the needs of large-scale automated batch production.

Claims

1. A motor shaft hole processing device, characterized in that: It includes a bed, a main body of the mechanism, a cutting fluid box, a spindle coolant box and a distribution box. The main body of the mechanism is installed on the bed, the distribution box is installed on one side of the bed, and the cutting fluid box and the spindle coolant box are installed in the bed; the main body of the mechanism includes a feeding component, a drilling component, a station conversion component and a conveyor belt, wherein the feeding component, the drilling component and the station conversion component are all installed on the working table of the bed, and the conveyor belt is installed on the side of the station conversion component, directly below the unloading clamp; The feeding assembly includes a base, a V-groove guide rail, a pushing cylinder, a threaded cylinder, a servo motor and a feeding cylinder, wherein the base is fixed on the bed surface, and the V-groove guide rail is installed on the base through a base plate and a guide rail seat; an optical fiber bracket is also fixed on the guide rail seat, and an optical fiber connecting plate and an optical fiber sensor are installed on the optical fiber bracket; the first and second brackets are respectively installed on both sides of the optical fiber bracket, and the bottom plate of the silo is fixed between the first and second brackets to form a hopper, and the workpiece is placed on the bottom plate of the silo; the servo motor is installed on one side of the bracket through a motor support, and a dividing wheel is installed on the output shaft of the servo motor through a coupling and a rotating shaft, and a material blocking plate is installed on the end surfaces of both sides of the dividing wheel, and the front end of the rotating shaft is installed on the first bracket through a bearing, and is pressed by a shaft end pressure plate, a bearing pressure cover and an end cover; the pushing cylinder is fixed on the guide rail seat through a pushing cylinder seat, and a push rod and a threaded cylinder are installed on the front end of the pushing cylinder through a connecting rod; the feeding cylinder is installed on one side of the base through a feeding cylinder bracket, and the piston rod of the feeding cylinder is connected to a feeding claw through an air claw connecting plate.

2. The motor shaft hole processing equipment according to claim 1, characterized in that: The utility model also comprises a lower baffle plate of the material dividing wheel and an upper baffle plate of the material dividing wheel, which are installed on the upper and lower sides of the material dividing wheel and between the first and second brackets.

3. The motor shaft hole processing equipment according to claim 2, characterized in that: It also has a material reversal detection device, which is installed on the upper baffle of the dividing wheel, and includes a detection rod and a proximity switch, wherein the proximity switch is installed on the upper baffle of the dividing wheel through a proximity switch bracket, and one end of the detection rod abuts against the outer diameter of the inverted workpiece or the groove diameter of the upright workpiece. When the inverted workpiece abuts against the detection rod, the other end of the detection rod touches the proximity switch.

4. The motor shaft hole processing equipment according to claim 1, characterized in that: The drilling assembly includes a Z-axis base, a linear guide assembly, an electric spindle, first and second push rods and a cylinder, wherein the Z-axis base is fixed on the bed surface, the linear guide assembly is fixed to the Z-axis base through a guide seat, and a slide base plate is installed on the slider of the linear guide assembly; the electric spindle is installed in the spindle seat, and the spindle seat is fixed to the slide base plate through a spindle pad; the first push rod is fixed under the slide base plate and connected to the second push rod through a pin, the second push rod is connected to the joint through a hinge pin, the joint is installed at the front end of the piston rod of the Z-axis cylinder, and the Z-axis cylinder is installed on one side of the end of the guide seat through the cylinder seat.

5. The motor shaft hole processing equipment according to claim 4, characterized in that: The push rod assembly includes a first push rod fixed under the slide base plate and connected to the second push rod through a pin, the second push rod is connected to the joint through a hinge pin, and the joint passes through the middle through hole of the cylinder seat and is installed at the front end of the piston rod of the Z-axis cylinder.

6. The motor shaft hole processing equipment according to claim 1, characterized in that: The workstation conversion assembly includes a jig, a linear guide assembly and an X-axis cylinder, wherein the linear guide assembly is fixed to the bed surface through a guide seat, the slide base plate is installed on the slider of the linear guide assembly, two sets of jigs are vertically installed in parallel on the slide base plate through jig brackets, and the slide base plate is fixedly installed on the slider of the linear guide assembly; the cylinder is installed on one side of the guide seat through the first baffle and the first pad.

7. The motor shaft hole processing equipment according to claim 6, characterized in that: It also includes the first and second hydraulic buffers and the first and second limit screws. The first hydraulic buffer and the first limit screw are installed on one end of the guide rail seat through the first baffle and the first cushion block, and the second hydraulic buffer and the second limit screw are installed on the other side of the guide rail seat through the second baffle and the second cushion block.

8. The motor shaft hole processing equipment according to claim 7, characterized in that: A buffer stopper and a connecting block are also provided below the slider of the linear guide assembly.

9. The motor shaft hole processing equipment according to claim 6, characterized in that: The fixture includes a positioning block, a diaphragm chuck, a pressing plate, a front end cover of a cylinder body, a piston and a rear end cover, wherein the positioning block is mounted on the diaphragm chuck, the diaphragm chuck is mounted on the cylinder body, the pressing plate passes through the inner hole of the cylinder body and is mounted on the piston, the front end cover is interference connected to the cylinder body, the rear end cover is connected to the cylinder body, and the piston is arranged between the rear end cover and the front end cover.

Images