CN111136285A

CN111136285A - Detection and chip removal equipment for chip winding workpieces of machining production line

Info

Publication number: CN111136285A
Application number: CN202010074898.2A
Authority: CN
Inventors: 石亚博; 王禾; 谢勇; 李昌铌; 刘秋宏
Original assignee: Chongqing Dexin Robot Detection Center Co ltd
Current assignee: Chongqing Dexin Robot Detection Center Co ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-05-12

Abstract

The invention belongs to the field of machining, and specifically discloses a device for detecting and removing chips of a machining production line with chips wound around a workpiece, comprising a mounting seat, on which a clamping jaw for gripping the workpiece, a scanning piece for scanning the workpiece, and a mounting seat are installed. The air pressure nozzle is used to remove chips. The end of the air pressure nozzle close to the mounting seat is fixed with a connecting ball. The mounting seat is provided with a mounting groove for the connecting ball to be inserted into, and the inner wall of the mounting groove is provided with a friction layer. The solution of the present invention can solve the problem that the robot cannot judge whether there are chips entangled on the workpiece when clamping the workpiece, and then adopts the form of blind grasping, which often causes damage due to the extrusion of the chips wrapped around the clamping surface of the robot gripper and the workpiece surface. And to the surface of the processed product.

Description

Detection and chip removal equipment for chip winding workpieces of machining production line

Technical Field

The invention belongs to the field of machining, and particularly relates to a device for detecting and removing chips of a chip winding workpiece of a machining production line.

Background

In the machining process of a machining production line, particularly in turning, generated chips are hard and are not easy to break, the situation that the chips are wound on a workpiece often occurs, certain damage is caused to the surface of the workpiece, the product quality can be influenced, a robot cannot judge whether the chips are wound on the workpiece when clamping the workpiece, and then a blind grabbing mode is adopted, and the surfaces of the machined products are often damaged due to the extrusion of the chips wound on the clamping surface of a clamping jaw of the robot and the surface of the workpiece.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a chip winding detection and chip removal device for a chip of a machining production line, which aims to solve the problem that a robot cannot judge whether chips are wound on a workpiece when clamping the workpiece, and further adopts a blind grabbing mode, so that the surface of a machined product is often damaged due to extrusion of chips wound on the clamping surface of a clamping jaw of the robot and the surface of the workpiece.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a detection and chip removal equipment of machining production line smear metal winding work piece, includes the mount pad, installs the atmospheric pressure nozzle that is used for pressing from both sides the clamping jaw of getting the work piece, is used for scanning the scanning piece of work piece and is used for cleaing away the smear metal on the mount pad, and the atmospheric pressure nozzle is close to the one end of mount pad and is fixed with the connection ball, is equipped with on the mount pad to supply to connect the mounting groove that the ball card was gone into, and the mounting groove.

Compared with the prior art, the invention has the following beneficial effects:

before clamping a workpiece, scanning the workpiece through a scanning piece to form a scanning image, comparing the scanning image with a standard image of the workpiece to judge whether chips exist on the workpiece, if the chips exist on the workpiece, rotating a mounting seat to enable an air pressure nozzle to be aligned with the mounting seat, blowing the chips through air with certain pressure sprayed by the air pressure nozzle to remove the chips, wherein the chips have certain hardness and are wound on the workpiece, so that the angle of blowing the chips by the air pressure nozzle is critical, otherwise, the chips are difficult to blow down, the mounting seat is provided with the scanning piece, a clamping jaw and the like, the size is large, the requirement of the whole body on a high-precision rotation angle is difficult to complete, therefore, the air pressure nozzle is connected to the mounting seat through a connecting ball, and the fixing of the air pressure nozzle on the mounting seat can be realized by the friction force of a friction layer, the air pressure nozzle can be rotated by applying an external force larger than the friction force, so that the angle of the air pressure nozzle is conveniently adjusted. The air pressure nozzle can scan the workpiece through the scanning piece again after working for a period of time until no cutting chips are scanned on the workpiece, and the mounting seat is rotated to enable the clamping jaw to clamp the workpiece.

Drawings

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

Fig. 2 is a schematic connection diagram of a connection ball and a mounting groove in embodiment 2 of the present invention.

In the figure: the device comprises a mounting seat 1, an air pressure nozzle 2, a connecting ball 3, a base 4, a sliding seat 5, a hard finger 6, a soft finger 7, a scanning piece 8, a friction block 9 and a mounting groove 10.

Detailed Description

The invention is further described in detail below with reference to the accompanying drawings, and specific embodiments are given.

Example 1

As shown in figure 1, a detection and chip removing equipment of machining production line smear metal winding work piece, including

mount pad

1, 1 bottom surfaces of mount pad are equipped with the mounting hole, and the mounting hole can be used to install mount pad 1 on prior art's robotic arm or industrial robot, can be more nimble drive mount pad 1 motion through robotic arm or industrial robot, and in current mechanical industry field, utilize robotic arm or industrial robot to press from both sides and get, processing operations such as transport belong to conventional technical means, do not describe in this application any more.

The longitudinal section of mount pad 1 is isosceles trapezoid, and two base angles of mount pad 1 all are 45. All install the clamping jaw on the both sides inclined plane of mount pad 1, the clamping jaw includes base 4 and sliding connection presss from both sides the finger on base 4, and in this embodiment, the slip that presss from both sides the finger adopts pneumatic drive, can refer to the pneumatic finger of smc among the prior art, presss from both sides the finger including hard 6 and can dismantle the soft finger 7 of connecting in two relative one sides of hard 6, and soft finger 7 can adopt flexible materials such as rubber to make, and soft finger 7 bolted connection indicates 6 hard. The clamp indicates that the lower extreme can be dismantled and be connected with slide 5, and is concrete, and clamp indicates bolted connection on slide 5, and 4 both sides of base all are equipped with C type groove, and slide 5 sliding connection is in C type inslot.

The top surface of the mounting base 1 is fixed with a scanning piece 8 used for scanning a workpiece, the scanning piece 8 can be selected from a laser two-dimensional scanning sensor, the scanning piece 8 is connected with an image processing terminal through a signal, and the scanning piece 8 can transmit data to the image processing terminal for processing after scanning an image.

The middle part of the front side of the mounting seat 1 is provided with a mounting groove, an air pressure nozzle 2 used for clearing cuttings is mounted in the mounting groove, one end of the air pressure nozzle 2 close to the mounting seat 1 is fixed with a connecting ball 3, the inner wall of the mounting groove is provided with a friction layer, and the friction layer can be made of materials with large friction coefficient, such as wear-resistant alloy steel.

The detection of detecting and removing bits equipment in this scheme includes following detection steps:

step A: scanning identification

In this step, there are two scanning modes:

a1, the workpiece is driven by the lathe to rotate after being processed on the lathe, the scanning piece 8 is opposite to the side wall of the workpiece, the position of the scanning piece 8 is unchanged, and after the workpiece rotates for one circle, the scanning piece 8 finishes scanning the external outline of the workpiece;

a2, the workpiece is fixed after being processed in the processing center, and the mounting base 1 drives the scanning piece 8 to complete the scanning of the workpiece by surrounding the workpiece for one circle;

the two scanning modes can be selected according to actual conditions in the actual processing process, after the scanning is finished, the scanning piece 8 transmits scanning data to the image processing terminal, the scanning data is fitted into a 3D model at the image processing terminal and is compared with a standard 3D model of the workpiece, if the comparison result is not correct, the workpiece is indicated to have chips, and if the comparison result is consistent, the workpiece is indicated to have no chips.

And B: chip removal

And D, if the comparison result shows that no chips exist on the workpiece, skipping the step and directly performing the step D.

If the comparison result shows that the workpiece has chips, the mounting seat 1 rotates to enable the air pressure nozzle 2 to be aligned with the workpiece, an operator applies external force to the air pressure nozzle 2 to enable the air pressure nozzle 2 to rotate, and then adjusts the angle of the air pressure nozzle 2, the chip directions are basically consistent when the workpieces in the same batch are machined, therefore, the angle of the air pressure nozzle 2 can also be kept unchanged, and only one-time adjustment of the angle of the air pressure nozzle 2 is needed when the workpieces in the same batch are machined.

The chips are blown by the gas with a certain pressure sprayed through the gas pressure nozzle 2 to be removed.

And C: rescanning

And D, after the air pressure nozzle 2 works for a period of time, scanning the workpiece through the scanning piece 8 again, comparing the results, and if the comparison result shows that no chips exist on the workpiece, performing the step D. And if the comparison result shows that the workpiece has chips, returning to the step B, and after the step B is returned for a certain number of times, manually performing intervention processing by an operator.

Step D: clamping workpiece

After the chips are removed, the mounting seat 1 is rotated, so that the clamping jaw is opposite to the workpiece, the workpiece is clamped through the sliding clamp of the clamping finger, the soft finger 7 is attached to the workpiece, the condition that the workpiece is damaged due to overlarge extrusion force is reduced, and the surface of the workpiece is protected. The soft finger 7 is detachably connected to the hard finger 6, and the applicability of the equipment can be improved by only replacing the soft finger 7 for different batches of workpieces with smaller characteristic difference, namely changing the thickness and the like of the soft finger 7; for the workpiece with larger characteristic difference, the clamping fingers can be directly replaced, and the clamping fingers can be detachably connected to the sliding seat 5, so that the replacement is convenient, and the applicability of the equipment is improved.

Step E: feeding material

Two clamping jaws are designed in the scheme, after a machined workpiece is clamped by one of the clamping jaws, the mounting seat 1 is rotated, another clamping jaw can clamp an unmachined workpiece and place the workpiece on a lathe or a machining center, the continuous feeding and discharging requirements can be realized, meanwhile, the two clamping jaws are installed on two inclined planes of the mounting seat 1 and form a 90-degree included angle between the two clamping jaws, so that the collision interference of the mounting seat 1 in the motion process is reduced, and the mounting seat 1 only needs to be rotated to realize.

Example 2

The only difference between this embodiment and embodiment 1 is that, as shown in fig. 2, the inner wall of the mounting groove 10 is connected with a plurality of friction blocks 9 in a sliding manner along the circumferential direction, the number of the friction blocks 9 is at least three, the sliding direction of the friction blocks 9 is along the radial direction of the mounting groove 10, one end of the friction block 9 close to the connecting ball 3 can be made of a material identical to the friction layer in embodiment 1, and the inner wall of the mounting groove 10 in this embodiment is also provided with the friction layer. Be fixed with on the mount pad 1 and be used for driving the gliding driving piece of clutch blocks 9, the cylinder can be chooseed for use to the driving piece, in the use, stretches into in the mounting groove 10 and connect ball 3 counterbalance through driving piece drive clutch blocks to fixed connection ball 3.

Embodiment 1 is compared to the scheme of this embodiment, slide through clutch block 9 sets up, on the one hand when pneumatic nozzle 2 is rotated to needs, can make clutch block 9 keep away from connecting ball 3 through sliding clutch block 9, clutch block 9 reduces the back to the power degree of being connected ball 3, rotation pneumatic nozzle 2 that can be comparatively convenient, compare embodiment 1 and rely on the frictional force of whole mounting groove 10 to fix pneumatic nozzle 2, the required dynamics that rotates pneumatic nozzle 2 obviously reduces, the staff's operation of being convenient for. On the other hand is after long-time the use, produce wearing and tearing easily between connecting ball 3 and the mounting groove, only the frictional layer through the mounting groove 10 inner wall weakens the fixed action of connecting ball 3 in the time of a long time, and through the setting of clutch blocks 9 in this scheme, even produce wearing and tearing, also can make clutch blocks 9 and connecting ball 3 offset through the position of adjustment clutch blocks 9, and in initial processing, also can avoid the fixed insecure phenomenon that contact between connecting ball 3 and the mounting groove 10 that machining error leads to closely leads to. The clearance between the mounting groove 10 and the connecting ball 3 in fig. 2 is only a schematic diagram, and in the actual production process, the clearance between the mounting groove 10 and the connecting ball 3 does not exceed 0.5cm, otherwise the connecting ball 3 needs to be replaced.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. a detection and chip removal equipment for machining production line chips wrapping workpiece, it is characterized in that: comprising a mounting seat, the mounting seat is provided with a clamping jaw for gripping a workpiece, a scanning part for scanning the workpiece and a chip for removing chips A connecting ball is fixed at one end of the air pressure nozzle close to the mounting seat, the mounting seat is provided with a mounting groove for the connecting ball to be inserted into, and the inner wall of the mounting groove is provided with a friction layer.

2 . The device for detecting and removing chips from a machining production line as claimed in claim 1 , wherein: the clamping jaws are provided with two, and the two clamping jaws are respectively located on both sides of the scanning element. 3 .

3. The detection and chip removal equipment of a machining production line chip winding workpiece according to claim 2, wherein the longitudinal section of the mounting seat is an isosceles trapezoid, and the two gripping claws are respectively located on two sides of the mounting seat. on the side slope.

4 . The device for detecting and removing chips from a machining production line chip wrapping a workpiece according to claim 2 , wherein the air pressure nozzle is also located between the two clamping jaws. 5 .

5 . The device for detecting and removing chips from a machining production line chip wrapping a workpiece according to claim 3 , wherein the two bottom angles of the mounting seat are both 45°. 6 .

6 . The device for detecting and removing chips from a machining production line according to claim 1 , wherein the clamping jaw comprises a base and a clamping finger slidably connected to the base, and the clamping finger comprises a hard finger and Soft fingers mounted on opposite sides of two hard fingers.

7 . The device for detecting and removing chips from a machining production line as claimed in claim 6 , wherein the lower end of the gripper finger is detachably connected with a sliding seat, and the sliding seat is slidably connected to the base. 8 .

8 . The device for detecting and removing chips from a machining production line chip wrapping a workpiece according to claim 7 , wherein the base is provided with a C-shaped groove for the sliding seat to slide. 9 .

9 . The device for detecting and removing chips from a machining production line chip wrapping around a workpiece according to claim 6 , wherein the soft finger is detachably connected to the hard finger. 10 .

10 . The device for detecting and removing chips from a machining production line as claimed in claim 1 , wherein: the inner wall of the mounting groove is slidably connected with a number of friction blocks along the circumferential direction, and the mounting seat is provided with a drive for driving The friction block sliding drive.