CN214349707U

CN214349707U - Device for simultaneously processing multiple holes

Info

Publication number: CN214349707U
Application number: CN202023264027.1U
Authority: CN
Inventors: 韩冰; 周睿; 李擎; 李路杰; 程海东; 陈燕
Original assignee: University of Science and Technology Liaoning USTL
Current assignee: Wuxi Xitang Nuclear Equipment Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-10-08
Anticipated expiration: 2030-12-29

Abstract

The utility model relates to a device for processing multiple holes simultaneously, which comprises an mechanical arm, a palm support disc, a cutter feeding mechanism, a drilling and grinding integrated mechanism, a drill bit and a profiling magnetic pole; a palm support disc is fixed at the executing end of the mechanical arm, a plurality of cutter feeding mechanisms are fixed on the palm support disc, drilling and grinding integrated mechanisms are fixedly connected onto the cutter feeding mechanisms, each cutter feeding mechanism comprises a disc frame, an A motor and a four-bar mechanism, the four-bar mechanism comprises two connecting rods and two rocking rods, the connecting rods, the rocking rods and the rocking rods are sequentially hinged to form a diamond-shaped structure, and a hinge joint between the connecting rods is connected with the drilling and grinding integrated mechanism; the end part of the rocker is connected with a crank rocker mechanism; one end of the connecting rod is hinged with the rocker, the other end of the connecting rod is hinged with one end of the crank, and the other end of the crank is driven by the motor A to rotate. The advantages are that: the method is suitable for the rough machining and the grinding finish machining of holes with different apertures which are regularly or irregularly distributed on the same surface.

Description

Device for simultaneously processing multiple holes

Technical Field

The utility model belongs to the processing field in hole especially relates to a porous device of simultaneous processing.

Background

With the continuous development of scientific technology, the functions which can be realized by the machine are more and more, the complexity of the required workpiece is higher and more, in order to save space and cost, enterprises select non-standard parts more and more as the first choice of research and development, and use porous workpieces to save cost, save space and be convenient to use, so that the porous workpieces are most widely applied to the non-standard parts.

However, with the wide application of porous parts, the defects of the porous workpiece processing technology in China are also exposed, and at present, the hole processing technology for processing the porous parts has larger short plates in terms of efficiency, standardization degree and hole precision. The method mainly comprises the following steps:

(1) the drilling efficiency is low: along with the application of porous spare is extensive, to evenly distributed's porous on the market at present, some processingequipment have appeared, and to on the coplanar, irregularly distributed's porous often adopts the mode of single processing, and the manual work utilizes electric hand drill to go on, trompil, and trompil is efficient, and the cost of labor is high.

(2) The degree of standardization of the wells was low: aiming at multiple holes irregularly distributed on the surface of a workpiece, manual drilling is adopted, the drilling often has an inclined condition after the drilling, so that the defects of inclined holes, increased aperture and the like are caused, and after the machining is finished, the precision of the multiple holes on one workpiece is most easily different, so that the workpieces cannot be matched with each other.

(3) The precision in hole is low excessively, has the burr, yielding: in traditional processing, after drilling, the inner surface precision of the hole is low, the machined surface burrs of the hole are more, the precision is low, but the inner surface of the hole is not easy to grind, so that the precision of some holes with high requirements on the diameter precision cannot be met. Such as porous members on visceral stents in medical devices, have long relied on access.

(4) The machine that can't dismantle at the work piece goes up to work, and the flexibility ratio is not enough: the traditional processing mode can only process the workpiece which is clamped on a machine tool or a large-space area generally, and the processing of the workpiece which is difficult to detach on some devices is often unwieldy.

Disclosure of Invention

The utility model aims at providing a porous device of simultaneous processing is applicable to in the same surface, and the hole in different apertures is bored rough machining and is ground the finish machining. The efficiency of processing the hole can be improved, its machining precision can be improved again.

In order to achieve the above object, the utility model discloses a following technical scheme realizes:

a device for processing multiple holes simultaneously comprises a mechanical arm, a palm support disc, a cutter feeding mechanism, a drilling and grinding integrated mechanism, a drill bit and a profiling magnetic pole;

a palm support disc is fixed at the executing end of the mechanical arm, a plurality of cutter feeding mechanisms are fixed on the palm support disc, drilling and grinding integrated mechanisms are fixedly connected onto the cutter feeding mechanisms, each cutter feeding mechanism comprises a disc frame, an A motor, a crank rocker mechanism and a four-bar mechanism, the four-bar mechanism comprises two connecting bars and two rockers, the connecting bars, the rockers and the rockers are sequentially hinged to form a diamond structure, and a hinge joint between the connecting bars is connected with the drilling and grinding integrated mechanism; a hinged shaft between the two rocking rods is fixed on the disc frame, and the end parts of the rocking rods are connected with a crank-rocker mechanism; the crank rocker mechanism comprises a connecting rod and a crank, one end of the connecting rod is hinged with the rocker, the other end of the connecting rod is hinged with one end of the crank, and the other end of the crank is driven by a motor A to rotate.

The drilling and grinding integrated mechanism comprises a motor B, a three-jaw chuck, a profiling magnetic pole, a drill bit and a drilling and grinding integrated tool rest, the motor B is connected with the three-jaw chuck through the drilling and grinding integrated tool rest, the motor B drives the three-jaw chuck to rotate, and the three-jaw chuck is used for clamping the profiling magnetic pole or the drill bit.

The bottom diameter of the profiling magnetic pole is smaller than that of the drill bit.

The profiling magnetic pole is adsorbed with a magnetic abrasive.

The clamping device comprises a four-jaw chuck, a clamp support and a roller bearing, the clamp support is connected with the four-jaw chuck through the roller bearing, and the four-jaw chuck is used for fixing a workpiece.

The number of the motors A is two.

The mechanical arm is a six-degree-of-freedom mechanical arm.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model is suitable for an in the same surface, the hole of regular distribution or irregular distribution, different apertures carries out the rough machining of driling and grinds the finish machining. The efficiency of processing the hole can be improved, its machining precision can be improved again. The utility model discloses the range of processing is wide, and the arm is nimble, can process multiple aperture simultaneously, and is efficient, bores and grinds integratively, and is more convenient, has bored the hole after, utilizes magnetic grinding to grind the finish machining to the inner wall and the surface in hole, targets in place in one step, and is convenient, high-efficient. The advantages are that:

1. by utilizing the characteristic of six degrees of freedom of the mechanical arm, the mechanical arm can flexibly move and freely rotate. For some space holes which are inconvenient to move, the device can also meet the requirements of drilling and grinding the holes.

2. The device utilizes the characteristic of six degrees of freedom of the mechanical arm, adopts a more reasonable palm supporting disc at the end part of the mechanical arm, modifies the original mechanical arm which can only be provided with one processing instrument, and better meets the design requirement of simultaneously processing multiple holes.

3. The cutter feeding mode of the device uses a prismatic four-bar mechanism, and the motor is used for controlling the extension and retraction of the cutter feeding mode, so that the feeding of the integrated drilling and grinding mechanism is driven, the feeding mode is different from the feeding mode which is realized by using the big arm and the small arm of the mechanical arm and is generally adopted at present, the device can realize the feeding with high precision in a short time, and the defect that the swing of the big arm and the small arm is used for feeding inaccurately when the traditional mechanical arm is used for processing is eliminated. The method is more suitable for processing the characteristics of a plurality of different apertures and irregular arrangement.

4. The cutter part of the device adopts a drilling and grinding integrated mechanism, each mechanism is provided with a B motor and a three-jaw chuck, and each B motor controls the rotating speed and the rotating direction of the respective three-jaw chuck. Every bores and grinds integrative mechanism and can both satisfy the functional requirement of self drilling or grinding separately to can work simultaneously, mutually noninterfere has improved work efficiency. The drilling and grinding integrated mechanism is matched with the telescopic motion of the four-bar mechanism, the feeding length of the cutter can be controlled, and the precision is improved while the machining efficiency is improved.

5. This device bore and grind integrative mechanism compares with traditional machine tool simplex form processing, and the processing cutter provides drill bit and profile modeling magnetic pole, and the drill bit is used for workpiece surface to bore, and the profile modeling magnetic pole can adsorb the magnetism abrasive material, grinds processing to the hole, can bore two and grind different cutters of installing on integrative mechanism, can realize a hole multiple mode processing, need not change the knife rest.

6. The traditional processing machine tool can only process one hole at a time, and the palm support disc on the device can be simultaneously provided with a plurality of drilling and grinding integrated mechanisms, so that a plurality of holes can be simultaneously processed.

7. The grinding mode of this device is magnetic grinding, compares with traditional emery wheel grinding, and the temperature rise is little, and processing back residual stress is little, is difficult for producing the deformation, and magnetic grinding technique is good from sharp nature simultaneously, grinds more evenly, is difficult for producing the mar on workpiece surface.

Drawings

FIG. 1 is a schematic view of a device for simultaneously processing multiple holes.

Fig. 2 is a schematic structural view of the tool feeding mechanism and the drilling and grinding integrated mechanism.

Fig. 3 is a schematic structural diagram of a drilling and grinding integrated mechanism.

Fig. 4 is a schematic view of the structure of the drill bit.

Fig. 5 is a schematic view of a contoured magnetic pole attracting a magnetic abrasive.

Fig. 6 is a schematic structural view of a mating workpiece holding device.

In the figure: 1-base 2-big arm 3-small arm 4-palm support disc 5-disc frame 6-A motor 7-crank rocker mechanism 8-four-bar linkage mechanism 9-polished rod bolt 10-sleeve 11-drilling and grinding integrated mechanism 12-three-jaw chuck 13-B motor 14-drilling and grinding integrated tool rest 15-drill bit 16-profiling magnetic pole 17-magnetic abrasive 18-workpiece 19-four-jaw chuck 20-roller bearing 21-clamp support 71-connecting rod 72-crank 81-rocker 82-connecting rod.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.

Referring to fig. 1-6, a device for simultaneously processing multiple holes comprises a mechanical arm, a palm support disc 4, a cutter feeding mechanism, a drilling and grinding integrated mechanism 11, a drill bit 15 and a profiling magnetic pole 16; the arm is six degree of freedom arms, and during actual manufacture, six degree of freedom arms select for use the IRB-6620 model industrial robot repacking of ABB company, remain its base 1, big arm 2, forearm 3, will with the execution end that forearm 3 is connected: the finger and palm parts are removed, the palm supporting disc 4 is directly fixed, namely the execution end of the mechanical arm is fixed with the palm supporting disc 4, the palm supporting disc 4 is fixed with a plurality of cutter feeding mechanisms, and the cutter feeding mechanisms are fixedly connected with a drilling and grinding integrated mechanism 11. The cutter feeding mechanism comprises a disc frame 5, an A motor 6, a crank rocker mechanism 7 and a four-bar linkage 8, wherein the four-bar linkage 8 consists of two connecting rods 82 and two rockers 81, the connecting rods 82, the rockers 81 and the rockers 81 are sequentially hinged to form a diamond structure, a hinge point can be connected through a polished rod bolt 9, and a drilling and grinding integrated mechanism 11 is connected to the hinge point between the connecting rods 82; a hinged shaft between the two rocking bars 81 is fixed on the disc rack 5, and the end parts of the rocking bars 81 are connected with the crank-rocker mechanism 7; the crank rocker mechanism 7 comprises a connecting rod 71 and a crank 72, one end of the connecting rod 71 is hinged with a rocker 81, the other end of the connecting rod is hinged with one end of the crank 72, and the other end of the crank 72 is driven by the A motor 6 to rotate.

The base 1 of arm makes and rotates, the big arm 2 of arm, forearm 3 luffing motion simultaneously, make the palm of arm hold in the palm the disc 4 and be close to the work piece 18 surface, wait for the big arm 2 of manipulator, after forearm 3 and palm the disc 4 and stablize, the arm begins to keep motionless, the operation of the cutter feed mechanism on the arm, A motor 6 drives crank 72 and rotates, through connecting rod 71, thereby drive the motion of rocker 81, two A motors 6 work simultaneously, adjust the angle between two rockers 81, also can adjust the angle between connecting rod 82 and the rocker 81 simultaneously, make the four-bar linkage of hinge flexible, rocker 81 and connecting rod 82 constitute rhombus four-bar linkage 8 again, when the integrated mechanism 11 of brill mill extends to required position, A motor 6 no longer moves, the contained angle is fixed, the four-bar linkage 8 rigidity, the integrated mechanism 11 rigidity of brill mill promptly.

The drilling and grinding integrated mechanism 11 comprises a B motor 13, a three-jaw chuck 12, a profiling magnetic pole 16, a drill bit 15 and a drilling and grinding integrated tool rest 14, the B motor 13 is connected with the three-jaw chuck 12 through the drilling and grinding integrated tool rest 14, the B motor 13 is connected with the three-jaw chuck 12 through a transmission mechanism and drives the three-jaw chuck 12 to rotate, and the drilling and grinding integrated tool rest 14 can be used for supporting the transmission mechanism, the three-jaw chuck 12 and the B motor 13. The sleeve 10 is fixed at the hinged point between the connecting rods 82, the sleeve 10 is fixedly connected with the drilling and grinding integrated tool rest 14, the B motor 13 drives the three-jaw chuck 12 to rotate, and the three-jaw chuck 12 is used for clamping the profiling magnetic pole 16 or the drill bit 15. After all the cutter feeding mechanisms are positioned, the B motor 13 starts to work to drive the three-jaw chuck 12 to rotate, so that the workpiece 18 can be simultaneously subjected to multi-hole machining, and the drilling work is completed by matching with the cutter feeding mechanisms. And then the drill bit 15 is replaced by a profiling magnetic pole 16, the profiling magnetic pole 16 adsorbs a magnetic abrasive 17 by utilizing magnetic field force, and the hole wall and the outer surface of the drilled hole are subjected to magnetic grinding and finish machining. The diameter of the bottom of the profiling magnetic pole 16 for processing the same hole is smaller than that of the bottom of the drill 15. The drilling and grinding integrated mechanism 11 can work independently, and drilling at different positions and different apertures in the same plane is achieved.

The profiling magnetic pole 16 can be used for carrying out eccentric grinding processing on the aperture of the workpiece 18 after drilling, or carrying out local eccentric magnetic grinding on the hole of the workpiece 18 needing local polishing grinding. The three-jaw chuck 12 clamps a profiling magnetic pole 16 with a smaller diameter and a length similar to that of the drill 15, the magnetic abrasive 17 is adsorbed on the working surface of the profiling magnetic pole 16, and the magnetic abrasive 17 starts to gather to form a magnetic particle brush under the action of a magnetic field force. The interval between the profiling magnetic pole 16 and the hole surface is 1-2mm, after the A motor 6 is fixed, the B motor 13 starts to work, the profiling magnetic pole 16 starts to rotate, the magnetic grain brush formed by the magnetic abrasive 17 is driven to rotate, the working surface of the workpiece 18 is scratched and ground, the surface precision is improved, burrs and the like left by the drill 15 in the drilling process are removed.

The device for processing the multiple holes simultaneously further comprises a matched workpiece 18 clamping device, the matched workpiece 18 clamping device comprises a four-jaw chuck 19, a clamp support 21 and a roller bearing 20, the clamp support 21 is connected with the four-jaw chuck 19 through the roller bearing 20, and the four-jaw chuck 19 is used for fixing the workpiece 18. When drilling or grinding, strong vibration impact is brought to the surface of the workpiece 18, so that the workpiece 18 needs to have strong stability, the large clamp support 21 and the four-jaw chuck 19 are adopted to improve the stability when the workpiece 18 is clamped, meanwhile, the four-jaw chuck 19 adopts a rotatable structure, when the number of holes on the surface of the workpiece 18 is large, the four-jaw chuck 19 can be rotated after the hole machining is finished and the tool is withdrawn, the machining is continued after the hole is changed, and the machining efficiency is improved.

Claims

1. a device for simultaneously processing porous, is characterized in that, comprises mechanical arm, palm rest disc, tool feeding mechanism, drilling and grinding integrated mechanism, drill bit, profiling magnetic pole;

The execution end of the mechanical arm is fixed with a palm rest disc, a number of tool feeding mechanisms are fixed on the palm rest disc, and a drilling and grinding integrated mechanism is fixedly connected to the tool feeding mechanism. Motor, crank-rocker mechanism, and four-link mechanism. The four-link mechanism consists of two connecting rods and two rockers. The hinge point is connected with a drilling and grinding integrated mechanism; the hinge shaft between the two rockers is fixed on the disc frame, and the end of the rocker is connected with the crank rocker mechanism; the crank rocker mechanism includes a connecting rod and a crank, and one end of the connecting rod is connected with The rocker is hinged, and the other end is hinged with one end of the crank, and the other end of the crank is driven by the A motor to realize rotation.

2. A device for simultaneously processing porous holes according to claim 1, wherein the integrated drilling and grinding mechanism comprises a B motor, a three-jaw chuck, a profiled magnetic pole, a drill bit, and an integrated drilling and grinding tool holder, and the B The motor is connected with the three-jaw chuck through the drill-grinding integrated tool holder. The B motor drives the three-jaw chuck to rotate, and the three-jaw chuck is used to mount the copy magnetic pole or drill bit.

3 . The device for simultaneously processing holes according to claim 2 , wherein the diameter of the bottom of the profiled magnetic pole is smaller than the diameter of the bottom of the drill bit. 4 .

4 . The device for simultaneously processing porous holes according to claim 2 , wherein the profiled magnetic poles are adsorbed with magnetic abrasives. 5 .

5. A device for simultaneously processing porous holes according to claim 1, characterized in that it further comprises a supporting workpiece clamping device, and the supporting workpiece clamping device comprises a four-jaw chuck, a fixture support, a roller bearing, and a fixture support. The seat is connected to the four-jaw chuck through roller bearings, and the four-jaw chuck is used to fix the workpiece.

6 . The device for simultaneously processing porous holes according to claim 1 , wherein there are two A motors. 7 .

7 . The device for simultaneously processing porous holes according to claim 1 , wherein the robotic arm is a six-degree-of-freedom robotic arm. 8 .