CN115846703A

CN115846703A - Mechanical arm stroke limiting system and limiting method of automatic lathe

Info

Publication number: CN115846703A
Application number: CN202211461314.2A
Authority: CN
Inventors: 柴玉军; 张正亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-03-28

Abstract

The invention discloses a mechanical arm stroke limiting system and a limiting method of an automatic lathe, and the mechanical arm stroke limiting system comprises a mounting plate, a first rack, a sliding rail, a support plate, a first motor, a first gear, a clamping mechanism and an alarm, wherein the mounting plate is vertically and fixedly arranged at the top of the lathe, the alarm is arranged on the mounting plate, the first rack and the sliding rail are horizontally and fixedly arranged on the plate surface of the mounting plate, the sliding rail is positioned below the first rack, the support plate and the sliding rail form sliding guide fit, the first gear is meshed with the first rack, the clamping mechanism is arranged on the support plate, an obstruction mechanism for limiting the stroke of the support plate is arranged on the support plate, a monitoring mechanism is arranged on the plate surface of the mounting plate, the monitoring mechanism comprises a distance sensor, and after the clamping mechanism clamps a workpiece, if the first gear is braked and fails, the support plate is close to the distance sensor, and then the distance sensor transmits a monitoring signal to a controller and enables the alarm to alarm.

Description

Mechanical arm stroke limiting system and limiting method of automatic lathe

Technical Field

The invention relates to the technical field of machining, in particular to a mechanical arm stroke limiting system and a limiting method of an automatic lathe.

Background

In the course of working of using traditional lathe to motor end cover, need manually carry out the material loading, then process it through the lathe, the work efficiency of this kind of traditional processing mode is low, and take trouble and difficultly, consequently, an automatic lathe has been developed, the manipulator arm is at walking support upstroke removal, thereby utilize automatic grabbing device to snatch and remove the completion material loading work of needing the machined part, the manipulator arm need use stop device to carry on spacingly to its stroke when walking on walking support, and current stroke stop device security performance is low, stop member is in case malfunctioning, there will be very big potential safety hazard, the removal that the manipulator arm does not stop can lead to the fact the damage to work piece and lathe.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a mechanical arm stroke limiting system and a limiting method of an automatic lathe.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.

A mechanical arm stroke limiting system and a limiting method of an automatic lathe comprise the following steps:

the mounting panel, rack one, the slide rail, the backup pad, extension board one, motor one, gear one, fixture, the alarm, the vertical fixed setting of mounting panel sets up in the top of lathe, the alarm is installed on the mounting panel, rack one, the slide rail level is fixed to be set up on the face of mounting panel, the slide rail is in the below of rack one, the backup pad level sets up in one side of mounting panel, the backup pad is the level and arranges, the backup pad constitutes the slide guide cooperation with the slide rail, extension board one sets up in the top of backup pad, motor one is installed on extension board one, motor one's output shaft is vertical downwards, the output axle end of motor one is located to a coaxial fixed cover of gear, gear one meshes with rack one, fixture sets up in the backup pad, be provided with in the backup pad and be used for carrying out the spacing hindrance mechanism of stroke to the backup pad, be provided with monitoring mechanism on the face of mounting panel, monitoring mechanism is close to the one end of mounting panel length direction, monitoring mechanism includes distance sensor.

As a further improvement of the technical scheme, the blocking mechanism comprises a second rack, a blocking component, the second rack is horizontally and fixedly arranged on the surface of the supporting plate, the second rack is located above the first rack, the end of the second rack is close to the distance sensor, the blocking component comprises an installation shell, a rotating shaft, a second gear, a connecting ring, a mark number, an image sensor, a lantern ring and a centrifugal telescopic rod, the installation shell is fixedly arranged on one side of the first support plate, the connecting ring is fixedly arranged above the installation shell, the rotating shaft is rotatably connected with the installation shell, the top of the rotating shaft penetrates through the top surface of the installation shell and is located in the connecting ring, the rotating shaft and the connecting ring are coaxially arranged, the second gear is coaxially and fixedly sleeved on the rotating shaft, the supporting plate can be meshed with the second rack, the lantern ring is coaxially and fixedly sleeved on the rotating shaft, one end of the centrifugal telescopic rod is hinged to the annular surface of the lantern ring, the other end of the centrifugal telescopic rod is close to the inner wall of the connecting ring, and the centrifugal telescopic rod is provided with a plurality of rings which are uniformly wound on the annular surface of the lantern ring.

As a further improvement of the technical scheme, a mounting groove is formed in the surface of the support plate, guide rods are horizontally and fixedly arranged in the mounting groove, two guide rods are arranged and arranged in parallel, a mounting seat is sleeved on each guide rod and horizontally arranged, a first spring is sleeved on each guide rod, the end portion of the first spring is in contact with the wall portion of the mounting seat, a clamping mechanism is arranged on the mounting seat and comprises a clamping assembly and a lifting assembly, the clamping assembly is located at the bottom of the lifting assembly and comprises a second support plate, a second motor, a lead screw, a first guide pillar, a first guide sleeve and a second guide sleeve, the second support plate is arranged at the top of the mounting seat, the second motor is arranged on the second support plate, an output shaft of the second motor is vertically downward, the first guide sleeve and the second guide sleeve are vertically arranged at the top of the clamping assembly, one end of the lead screw is coaxially and fixedly connected with an output shaft end of the second motor, the other end of the first guide pillar extends into the first guide sleeve, the first guide pillar is arranged on one side of the lead screw in parallel, and the bottom of the first guide sleeve extends into the second guide sleeve.

As a further improvement of the technical scheme, a cleaning assembly is arranged on one side of the lifting assembly and comprises an exhaust hood, a communicating pipe, a blowing pipe, an air inlet pipe, a first bevel gear, a connecting shaft, a second bevel gear, a third supporting plate, fan blades and a fourth bevel gear, the exhaust hood is fixedly arranged on one side of the clamping assembly, the air inlet pipe is vertically arranged on one side of the second supporting plate, the bottom of the air inlet pipe is communicated with the exhaust hood through the communicating pipe, one end of the connecting shaft is rotatably connected with the inner wall of the air inlet pipe, the other end of the connecting shaft penetrates through the wall of the air inlet pipe and is coaxially and fixedly connected with the third bevel gear, the first bevel gear is coaxially and fixedly sleeved at the output shaft end of the second motor, the first bevel gear is meshed with the third bevel gear, the second bevel gear is coaxially and fixedly sleeved on the connecting shaft, the third supporting plate is horizontally and fixedly arranged in the air inlet pipe, the fan blades are rotatably arranged on the third supporting plate, the blowing direction of the fan blades is downward, the fourth bevel gear is coaxially and fixedly sleeved at the center shaft end of the fan blades, the fourth bevel gear is meshed with the second bevel gear, one end of the blowing pipe is communicated with the communicating pipe, and the other end of the blowing pipe is close to the distance sensor.

As a further improvement of this technical scheme, be provided with spacing subassembly on the face of backup pad, spacing subassembly includes extension board four, stopper one, stopper two, guide pillar two, the fixture block, the electro-magnet, extension board four is vertical to be set up on the face of backup pad, stopper one, stopper two is fixed to be set up on the face of mount pad, the fixture block card is in stopper one, between the stopper two, the tip of fixture block and the one end fixed connection of guide pillar two, the other end of guide pillar two passes the face of extension board four and is provided with external step, the cover is equipped with spring two on the guide pillar two, the one end and the fixture block contact of spring two, the other end contacts with the face of extension board four, the electro-magnet sets up on the face of extension board four, the fixture block makes for armature.

As a further improvement of the technical scheme, the circumference of the rotating shaft is provided with a mark number, the installation shell is provided with an image sensor, and the image sensor faces the circumference of the rotating shaft.

As a further improvement of the technical scheme, the monitoring mechanism further comprises a fifth supporting plate, a sixth supporting plate and a third guide pillar, wherein the fifth supporting plate is fixedly arranged on the plate surface of the mounting plate, the sixth supporting plate is positioned on one side of the fifth supporting plate, one end of the third guide pillar is fixedly connected with the sixth supporting plate, the other end of the third guide pillar penetrates through the plate surface of the fifth supporting plate and is provided with an external step, the third guide pillar is provided with two guide pillars which are arranged in parallel, a third spring is sleeved on the third guide pillar, one end of the third spring is in contact with the sixth supporting plate, the other end of the third spring is in contact with the fifth supporting plate, and the distance sensor is arranged on the sixth supporting plate.

Compared with the prior art, the invention has the advantages that after the clamping mechanism clamps the workpiece, if the gear fails to brake once, the support plate is close to the distance sensor, then the distance sensor transmits a monitoring signal to the controller, and the alarm gives an alarm, and if the gear fails to brake during the advancing process of the support plate, the support plate can slow down the brake, dust on the surface of the clamped workpiece can be blown and cleaned when air is discharged through the communicating pipe and the exhaust hood, dust at the end part of the distance sensor can be blown and cleaned when the air is circulated through the blowing pipe, the monitoring effect of the distance sensor is ensured, and the mounting seat moves along the guide rod when the support plate enters a deceleration state, so that the clamping plate on the clamping assembly is prevented from being damaged by the inertia effect of the workpiece.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the fixture installation of the present invention.

Fig. 3 is a schematic view of the monitoring mechanism of the present invention.

FIG. 4 is a schematic view of the blocking mechanism of the present invention.

Fig. 5 is a schematic view of the installation of the centrifugal telescopic rod of the present invention.

FIG. 6 is a schematic view of the combination of the clamping assembly, the lifting assembly and the cleaning assembly of the present invention.

FIG. 7 is a schematic view of a lift assembly of the present invention.

FIG. 8 is a schematic view of a cleaning assembly of the present invention.

Fig. 9 is a schematic view of a spacing assembly of the present invention.

Labeled as:

10. mounting a plate; 110. a first rack; 120. a slide rail; 130. a support plate; 131. a first support plate; 132. a first motor; 133. a first gear; 134. mounting grooves; 135. a mounting seat; 136. a guide bar;

20. a clamping mechanism; 210. a clamping assembly; 220. a lifting assembly; 221. a support plate II; 222. a second motor; 223. a screw rod; 224. a first guide post; 225. a first guide sleeve; 226. a second guide sleeve; 230. cleaning the assembly; 231. an exhaust hood; 232. a communicating pipe; 233. a blowpipe; 234. an air inlet pipe; 235. a first bevel gear; 236. a connecting shaft; 237. a second bevel gear; 238. a third bevel gear; 239. a support plate III; 240. a fan blade; 241. a fourth bevel gear; 250. a limiting component; 251. a support plate IV; 252. a first limiting block; 253. a second limiting block; 254. a second guide post; 255. a clamping block; 256. an electromagnet;

30. a blocking mechanism; 310. a second rack; 320. a barrier assembly; 321. installing a shell; 322. a rotating shaft; 323. a second gear; 324. a connecting ring; 325. marking a mark; 326. an image sensor; 327. a collar; 328. a centrifugal telescopic rod;

40. a monitoring mechanism; 410. a support plate five; 420. a support plate six; 430. a third guide pillar; 440. a distance sensor.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate an orientation or a positional relationship based on that shown in the drawings, it is only for convenience of description and simplification of description, but not to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limitations on the present patent, and specific meanings of the terms may be understood according to specific situations by those of ordinary skill in the art.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being fixed or detachable or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 9, a robot arm stroke limiting system and a limiting method for an automatic lathe includes:

the mounting plate 10, the first rack 110, the slide rail 120, the support plate 130, the first support plate 131, the first motor 132, the first gear 133, the clamping mechanism 20 and the alarm, wherein the mounting plate 10 is vertically and fixedly arranged at the top of the lathe, the alarm is arranged on the mounting plate 10, the first rack 110 and the slide rail 120 are horizontally and fixedly arranged on the surface of the mounting plate 10, the slide rail 120 is positioned below the first rack 110, the support plate 130 is horizontally arranged on one side of the mounting plate 10, the support plate 130 is horizontally arranged, the support plate 130 and the slide rail 120 form sliding guide fit, the first support plate 131 is arranged at the top of the support plate 130, the first motor 132 is arranged on the first support plate 131, an output shaft of the first motor 132 is vertically downward, the output shaft end of a motor 132 is coaxially fixed and fixedly sleeved with a gear 133, the gear 133 is meshed with a rack 110, the clamping mechanism 20 is arranged on the supporting plate 130, the supporting plate 130 is provided with a blocking mechanism 30 used for limiting the stroke of the supporting plate 130, the surface of the mounting plate 10 is provided with a monitoring mechanism 40, the monitoring mechanism 40 is close to one end of the mounting plate 10 in the length direction, the monitoring mechanism 40 comprises a distance sensor 440, the clamping mechanism 20 clamps a workpiece, and if the gear 133 is out of order during braking, the supporting plate 130 is close to the distance sensor 440, then the distance sensor 440 transmits a monitoring signal to a controller, and an alarm is enabled to give an alarm.

More specifically, the blocking mechanism 30 includes a second rack 310 and a blocking component 320, the second rack 310 is horizontally and fixedly disposed on a plate surface of the support plate 130, the second rack 310 is located above the first rack 110, an end of the second rack 310 is close to the distance sensor 440, the blocking component 320 includes a mounting housing 321, a rotating shaft 322, a second gear 323, a connecting ring 324, a reference number 325, an image sensor 326, a collar 327 and a centrifugal telescopic rod 328, the mounting housing 321 is fixedly disposed on one side of the first support plate 131, the connecting ring 324 is fixedly disposed above the mounting housing 321, the rotating shaft 322 is rotatably connected to the mounting housing 321, a top of the rotating shaft 322 penetrates through a top plate surface of the mounting housing 321 and is located in the connecting ring 324, the rotating shaft 322 and the connecting ring 324 are coaxially disposed, the second gear 323 is coaxially and fixedly sleeved on the rotating shaft 322, the second gear 323 can be meshed with the second rack 310 during the moving process of the support plate 130, the collar 327 is coaxially disposed on the rotating shaft 322, one end of the centrifugal telescopic rod 328 is hinged to the fixed sleeve of the collar 327, the other end of the centrifugal telescopic rod 328 close to an inner wall of the connecting ring 324, the telescopic rod is uniformly wound around a ring surface of the collar, the support plate 130, the gear 323 is meshed with the gear 327, the rotating shaft 328, and drives the rotating shaft 328, so as to drive the rotating shaft to rotate the rotating shaft 328, and then to reduce the rotating speed of the centrifugal telescopic rod 328, and the centrifugal telescopic rod 322, and the rotating shaft to reduce the rotating shaft, thereby reducing the rotating speed of the rotating shaft 322, and reduce the rotating speed of the centrifugal telescopic rod.

As shown in fig. 6 to 9, a mounting groove 134 is formed on a plate surface of the support plate 130, a guide rod 136 is horizontally and fixedly arranged in the mounting groove 134, two guide rods 136 are arranged in parallel, a mounting seat 135 is sleeved on the guide rod 136, the mounting seat 135 is horizontally arranged, a first spring is sleeved on the guide rod 136, an end of the first spring contacts with a wall of the mounting seat 135, the clamping mechanism 20 is arranged on the mounting seat 135, the clamping mechanism 20 comprises a clamping component 210 and a lifting component 220, the clamping component 210 is arranged at the bottom of the lifting component 220, the lifting component 220 comprises a second support plate 221, a second motor 222, a screw rod 223, a first guide post 224, a first guide sleeve 225 and a second guide sleeve 226, the second support plate 221 is arranged at the top of the mounting seat 135, the second motor 222 is arranged on the second support plate 221, an output shaft of the second motor 222 is arranged vertically downwards, the first guide sleeve 225 and the second guide sleeve 226 are vertically arranged at the top of the clamping component 210, one end of the screw rod 223 is coaxially and fixedly connected with the output shaft of the first guide sleeve 225, the other end of the second motor 222 is arranged in the guide sleeve 225, the first guide rod 224, the first guide sleeve 223 is arranged in parallel to one side of the guide sleeve 223, the guide sleeve 224, the guide sleeve 226, the bottom of the guide sleeve 224 is arranged in parallel, the guide sleeve 224, the guide sleeve 226, and the guide rod 224, the guide sleeve 222 can drive the motor can clamp the workpiece 210 to clamp the workpiece, and clamp the workpiece.

More specifically, a cleaning assembly 230 is arranged on one side of the lifting assembly 220, the cleaning assembly 230 comprises an exhaust hood 231, a communicating pipe 232, a blowing pipe 233, an air inlet pipe 234, a first bevel gear 235, a connecting shaft 236, a second bevel gear 237, a third bevel gear 238, a third support plate 239, fan blades 240 and a fourth bevel gear 241, the exhaust hood 231 is fixedly arranged on one side of the clamping assembly 210, the air inlet pipe 234 is vertically arranged on one side of the second support plate 221, the bottom of the air inlet pipe 234 is communicated with the exhaust hood 231 through the communicating pipe 232, one end of the connecting shaft 236 is rotatably connected with the inner wall of the air inlet pipe 234, the other end of the connecting shaft 239 penetrates through the wall of the air inlet pipe 234 and is coaxially and fixedly connected with the third bevel gear 238, the first bevel gear 235 is coaxially and fixedly sleeved at the output shaft end of the second motor 222, the first bevel gear 235 is meshed with the third bevel gear 238, the second bevel gear 237 is coaxially and fixedly sleeved on the connecting shaft 236, the third support plate 234 is horizontally and fixedly arranged in the air inlet pipe 234, the fan blade 240 is rotatably installed on the support plate III 239, the blowing direction of the fan blade 240 is downward, the bevel gear IV 241 is coaxially and fixedly sleeved at the central shaft end of the fan blade 240, the bevel gear IV 241 is meshed with the bevel gear II 237, one end of the blowing pipe 233 is communicated with the communicating pipe 232, the other end of the blowing pipe 233 is close to the distance sensor 440, in the process that the motor II 222 drives the clamping component 210 to move up and down, the bevel gear I235 drives the bevel gear III 238 to rotate, so as to drive the connecting shaft 236 to rotate, then the bevel gear II 237 is driven to rotate, so as to drive the fan blade 240 to rotate and blow downwards, air is circulated through the communicating pipe 232 and the blowing pipe 233, when being discharged through the communicating pipe 232 and the exhaust hood 231, the air can blow and clean dust on the surface of the clamped workpiece, and when being circulated through the blowing pipe 233, the air can blow and clean dust on the end part of the distance sensor 440, the monitoring effect of the distance sensor 440 is ensured.

More specifically, a limiting assembly 250 is arranged on the plate surface of the support plate 130, the limiting assembly 250 includes a first support plate 251, a first limiting block 252, a second limiting block 253, a second guide pillar 254, a fixture block 255 and an electromagnet 256, the first support plate 251 is vertically arranged on the plate surface of the support plate 130, the first limiting block 252 and the second limiting block 253 are fixedly arranged on the plate surface of the mounting seat 135, the fixture block 255 is clamped between the first limiting block 252 and the second limiting block 253, the end portion of the fixture block 255 is fixedly connected with one end of the second guide pillar 254, the other end of the second guide pillar 254 penetrates through the plate surface of the fourth support plate 251 and is provided with an external step, the second guide pillar 254 is sleeved with a second spring, one end of the second spring is in contact with the fixture block 255, the other end of the second spring is in contact with the plate surface of the fourth support plate 251, the electromagnet 256 is made of an armature, the electromagnet 255 can attract the fixture block 255 when the electromagnet 256 is electrified, so that the fixture block 255 is separated from the first limiting block 252 and the second limiting block 253, and the mounting seat 135 can be withdrawn.

More specifically, the circumference of the rotating shaft 322 is provided with a mark 325, the mounting housing 321 is provided with an image sensor 326, the image sensor 326 faces the circumference of the rotating shaft 322, when the image sensor 326 monitors that the mark 325 on the rotating shaft 322 moves, it indicates that the rotating shaft 322 rotates, and indicates that the supporting plate 130 enters a deceleration state, at this time, the image sensor 326 transmits a detection signal to the controller, and energizes the electromagnet 256, and then attracts the fixture block 255, so that the fixture block 255 is separated from the first limit block 252 and the second limit block 253, thereby canceling the limit on the mounting seat 135, and the mounting seat 135 moves along the guide rod 136, thereby preventing the clamping plate on the clamping assembly 210 from being damaged due to the inertia effect of the workpiece.

More specifically, the monitoring mechanism 40 further includes a fifth support plate 410, a sixth support plate 420, and a third guide pillar 430, the fifth support plate 410 is fixedly disposed on the panel surface of the mounting plate 10, the sixth support plate 420 is located on one side of the fifth support plate 410, one end of the third guide pillar 430 is fixedly connected to the sixth support plate 420, the other end of the third guide pillar 430 penetrates through the panel surface of the fifth support plate 410 and is provided with an external step, the third guide pillar 430 is provided with two springs and is arranged in parallel, the third guide pillar 430 is sleeved with a third spring, one end of the third spring is in contact with the sixth support plate 420, the other end of the third spring is in contact with the fifth support plate 410, the distance sensor 440 is disposed on the sixth support plate 420, if the support plate 130 decelerates and is out of control, the support plate 130 moves to the distance sensor 440, and the sixth support plate 420 can buffer the distance sensor 440, so as to protect the distance sensor 440.

The working principle is as follows:

in the use process of the invention, after the clamping mechanism 20 clamps the workpiece, if the first gear 133 is braked and fails, the support plate 130 is close to the distance sensor 440, then the distance sensor 440 transmits the monitoring signal to the controller, and the alarm is alarmed, during the process that the supporting plate 130 moves, the second gear 323 is meshed with the second rack 310, then the second gear 323 rotates to drive the rotating shaft 322 to rotate, and then the sleeve ring 327 rotates to drive the centrifugal telescopic rod 328 to extend, then, the end of the centrifugal telescopic rod 328 is abutted against the inner annular surface of the connecting ring 324, so as to slow down the rotating speed of the rotating shaft 322, thereby slowing down the traveling speed of the support plate 130, and during the process that the second motor 222 drives the clamping assembly 210 to move up and down, the first bevel gear 235 drives the third bevel gear 238 to rotate, thereby driving the connecting shaft 236 to rotate, then the second bevel gear 237 is driven to rotate, so that the fourth bevel gear 241 is driven to rotate, the fan blade 240 is driven to rotate and blow air downwards, the air circulates through the communicating pipe 232 and the blowing pipe 233, the dust on the surface of the clamped workpiece can be blown and cleaned when the air is discharged through the communicating pipe 232 and the exhaust hood 231, the dust at the end part of the distance sensor 440 can be blown and cleaned when the air circulates through the blowing pipe 233, and the monitoring effect of the distance sensor 440 is ensured, when the image sensor 326 detects the movement of the mark 325 on the shaft 322, it indicates that the shaft 322 rotates, and the support plate 130 enters a deceleration state, and at this time, the image sensor 326 transmits a detection signal to the controller, and energizes the electromagnet 256, then the clamping block 255 is attracted, so that the clamping block 255 is separated from the first limiting block 252 and the second limiting block 253, thus, the limit of the mounting seat 135 is removed, and the mounting seat 135 moves along the guide rod 136, so that the clamping plate on the clamping assembly 210 is prevented from being damaged by the inertia of the workpiece.

It should be understood that the above-described embodiments are merely preferred embodiments of the invention and the technical principles applied thereto. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, such variations are within the scope of the invention as long as they do not depart from the spirit of the invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. A mechanical arm stroke limiting system and a limiting method of an automatic lathe are disclosed, and the method comprises the following steps:

s1, when the mechanical arm is in a brake failure, the supporting plate is close to a distance sensor, then the distance sensor transmits a monitoring signal to a controller, and an alarm gives an alarm;

s2, in the process that the motor II drives the clamping assembly to move up and down, the bevel gear drives the bevel gear III to rotate so as to drive the connecting shaft to rotate, then the bevel gear II is driven to rotate so as to drive the bevel gear IV to rotate so as to drive the fan blades to rotate and blow downwards, air flows through the communicating pipe and the blowing pipe, dust on the surface of the clamped workpiece can be blown and cleaned when the air is discharged through the communicating pipe and the exhaust hood, and dust at the end part of the distance sensor can be blown and cleaned when the air flows through the blowing pipe;

s3 when image sensor monitoring changes epaxial mark and takes place to remove, show that the pivot rotates, show that the backup pad gets into the deceleration state, at this moment, image sensor will detect signal transmission to controller to make the electro-magnet to get electric, attract the fixture block after that, thereby make fixture block and stopper one, stopper two break away from, thereby withdraw spacing to the mount pad, the mount pad removes along the guide bar, thereby avoids the splint on the centre gripping subassembly to receive the inertial action of work piece and impaired.

2. The mechanical arm stroke limiting system of the automatic lathe is characterized by comprising a mounting plate, a first rack, a sliding rail, a supporting plate, a first motor, a first gear, a clamping mechanism and an alarm, wherein the mounting plate is vertically and fixedly arranged at the top of the lathe, the alarm is arranged on the mounting plate, the first rack and the sliding rail are horizontally and fixedly arranged on the plate surface of the mounting plate, the sliding rail is positioned below the first rack, the supporting plate is horizontally arranged on one side of the mounting plate, the supporting plate and the sliding rail form sliding guide fit, the first supporting plate is arranged at the top of the supporting plate, the first motor is arranged on the first supporting plate, an output shaft of the first motor is vertically downward, the first gear is coaxially and fixedly sleeved at the output shaft end of the first motor, the first gear is meshed with the first rack, the clamping mechanism is arranged on the supporting plate, an obstruction mechanism used for limiting the stroke of the supporting plate is arranged on the supporting plate, a monitoring mechanism is arranged on the plate surface of the mounting plate, the monitoring mechanism is close to one end of the mounting plate in the length direction, and comprises a distance sensor.

3. The mechanical arm stroke limiting system of the automatic lathe as claimed in claim 2, wherein the blocking mechanism comprises a second rack and a blocking component, the second rack is horizontally and fixedly arranged on the surface of the support plate, the second rack is arranged above the first rack, the end of the second rack is close to the distance sensor, the blocking component comprises a mounting shell, a rotating shaft, a second gear, a connecting ring, a marking mark, an image sensor, a lantern ring and a centrifugal telescopic rod, the mounting shell is fixedly arranged on one side of the first support plate, the connecting ring is fixedly arranged above the mounting shell, the rotating shaft is rotatably connected with the mounting shell, the top of the rotating shaft penetrates through the top surface of the mounting shell and is arranged in the connecting ring, the rotating shaft and the connecting ring are coaxially arranged, the second gear is coaxially and fixedly sleeved on the rotating shaft, the second gear can be meshed with the second rack, the lantern ring is coaxially and fixedly sleeved on the rotating shaft, one end of the centrifugal telescopic rod is hinged to the annular surface of the lantern ring, the other end of the centrifugal telescopic rod is close to the inner wall of the connecting ring, and the centrifugal telescopic rod is provided with a plurality of rings and evenly wound around the annular surface of the lantern ring.

4. The robot arm stroke limiting system of the automatic lathe as claimed in claim 3, wherein a mounting groove is formed in the plate surface of the support plate, two guide rods are horizontally and fixedly arranged in the mounting groove, a mounting seat is sleeved on each guide rod, a first spring is sleeved on each guide rod, the end of the first spring is in contact with the wall of the mounting seat, the clamping mechanism is arranged on the mounting seat and comprises a clamping component and a lifting component, the clamping component is located at the bottom of the lifting component, the lifting component comprises a second support plate, a second motor, a lead screw, a first guide pillar, a first guide sleeve and a second guide sleeve, the second support plate is arranged at the top of the mounting seat, the second motor is arranged on the second support plate, an output shaft of the second motor faces downwards vertically, the first guide sleeve and the second guide sleeve are arranged at the top of the clamping component, one end of the lead screw is coaxially and fixedly connected with an output shaft of the second motor, the other end of the lead screw extends into the first guide sleeve, the first guide pillar is arranged at one side of the lead screw in parallel, and the bottom of the first guide pillar extends into the second guide sleeve.

5. The mechanical arm stroke limiting system of the automatic lathe according to claim 4, wherein a cleaning assembly is arranged on one side of the lifting assembly, the cleaning assembly comprises an exhaust hood, a communicating pipe, a blowing pipe, an air inlet pipe, a first bevel gear, a connecting shaft, a second bevel gear, a third supporting plate, fan blades and a fourth bevel gear, the exhaust hood is fixedly arranged on one side of the clamping assembly, the air inlet pipe is vertically arranged on one side of the second supporting plate, the bottom of the air inlet pipe is communicated with the exhaust hood through the communicating pipe, one end of the connecting shaft is rotatably connected with the inner wall of the air inlet pipe, the other end of the connecting shaft penetrates through the wall of the air inlet pipe and is fixedly connected with the third bevel gear coaxially, the first bevel gear is fixedly sleeved at the output shaft end of the second motor, the first bevel gear is meshed with the third bevel gear, the second bevel gear is fixedly sleeved on the connecting shaft coaxially, the third supporting plate is horizontally and fixedly arranged in the air inlet pipe, the fan blades are rotatably arranged on the third supporting plate, the blowing direction of the fan blades faces downward, the fourth bevel gear is fixedly sleeved at the center shaft ends of the fan blades, the fourth bevel gear is meshed with the bevel gear, one end of the communicating pipe is communicated with the communicating pipe, and the other end of the distance sensor.

6. The robot arm stroke limiting system of the automatic lathe according to claim 5, wherein a limiting component is arranged on the surface of the supporting plate, the limiting component comprises a fourth supporting plate, a first limiting block, a second guide pillar, a clamping block and an electromagnet, the fourth supporting plate is vertically arranged on the surface of the supporting plate, the first limiting block and the second limiting block are fixedly arranged on the surface of the mounting seat, the clamping block is clamped between the first limiting block and the second limiting block, the end of the clamping block is fixedly connected with one end of the second guide pillar, the other end of the second guide pillar penetrates through the surface of the fourth supporting plate and is provided with an external step, the second guide pillar is sleeved with a second spring, one end of the second spring is in contact with the clamping block, the other end of the second spring is in contact with the surface of the fourth supporting plate, the electromagnet is arranged on the surface of the fourth supporting plate, and the clamping block is made of an armature.

7. The robot arm stroke limiting system of claim 3, wherein the shaft has markings disposed on a circumference thereof, and the mounting housing has an image sensor disposed thereon, the image sensor facing the circumference of the shaft.

8. The robot arm stroke limiting system of the automatic lathe according to claim 2, wherein the monitoring mechanism further comprises a fifth support plate, a sixth support plate and a third guide pillar, the fifth support plate is fixedly arranged on the surface of the mounting plate, the sixth support plate is arranged on one side of the fifth support plate, one end of the third guide pillar is fixedly connected with the sixth support plate, the other end of the third guide pillar penetrates through the surface of the fifth support plate and is provided with an external step, the third guide pillar is provided with two guide pillars which are arranged in parallel, a third spring is sleeved on the third guide pillar, one end of the third spring is in contact with the sixth support plate, the other end of the third spring is in contact with the fifth support plate, and the distance sensor is arranged on the sixth support plate.