CN-122007905-A - High-precision deep hole feature machining device and method based on rapid die changing technology

CN122007905ACN 122007905 ACN122007905 ACN 122007905ACN-122007905-A

Abstract

The invention discloses a deep hole feature processing device and method based on a rapid die changing technology, and belongs to the technical field of machining. The device comprises a machine tool working platform, a first quick-change female seat, a first quick-change piece, a deep hole clamping mechanism, a second quick-change piece and a second quick-change female seat. The method comprises the steps of fixing a workpiece on a first quick-change piece to form a quick-change whole, mounting the whole on a first quick-change female seat of a machine tool, machining a datum plane and other characteristics, and replacing equipment to move the quick-change whole with the workpiece to a deep hole clamping mechanism mounted on the machine tool for deep hole machining. According to the invention, through an innovative quick-change modularized design, the milling, conventional hole machining and high-precision deep hole machining on the same horizontal machining center are realized quickly and accurately, the turnover and repeated clamping of workpieces are reduced, and the machining efficiency, the equipment utilization rate and the quality stability of deep hole machining are remarkably improved.

Inventors

JIN YU
WANG ZHICHAO
LIU JUNCHENG
CHANG SIJIA
ZHENG FANGZHI
CHEN YUNHAI
REN PEIQIANG
ZHANG SHANGXIONG
JIA JUNLIANG
NING YUANSONG
Zou sai
WANG ZHIXIANG

Assignees

北京科技职业大学

Dates

Publication Date: 20260512
Application Date: 20260415

Claims (7)

1. Deep hole feature processingequipment based on quick die change technique, its characterized in that includes: A machine tool working platform (3) is fixedly provided with a first quick-change female seat (2); the first quick-change piece (1) is used for clamping a part to be processed; the bottom of the deep hole clamping mechanism (4) is provided with a second quick-change piece (6) matched with the first quick-change female seat (2), and the top of the deep hole clamping mechanism is provided with a second quick-change female seat (5); The first quick-change piece (1) can be selectively connected with the first quick-change female seat (2) or the second quick-change female seat (5) in a detachable mode, and the deep hole clamping mechanism (4) is connected with the first quick-change female seat (2) in a detachable mode through a second quick-change piece (6) at the bottom of the deep hole clamping mechanism.
2. The deep hole feature machining device based on the rapid die change technology according to claim 1, wherein the deep hole clamping mechanism (4) comprises a vertical frame arm (41), a horizontal frame arm (42), a guide limiting plate (43), a first motor (44) and a second motor (45), the bottom end of the vertical frame arm (41) is installed on the second rapid-change piece (6), the guide limiting plate (43) is provided with two guide limiting plates, the guide limiting plate is symmetrically installed on the side wall of the vertical frame arm (41), the first motor (44) is installed on the vertical frame arm (41), the output end of the first motor (44) is in transmission connection with a first lead screw pair, the second motor (45) is in sliding connection with the vertical frame arm (41) through a sliding block, the sliding block is connected with the first lead screw pair, the output end of the second motor (45) is in transmission connection with a second lead screw pair, and the second lead screw pair is in transmission connection with the second lead screw pair.
3. The deep hole feature processing device based on the rapid die change technology according to claim 2, wherein a guide sleeve mounting part (7) is arranged at the top end of the vertical frame arm (41) and towards one side of the horizontal frame arm (42).
4. The deep hole feature machining device based on the rapid die change technology according to claim 2, wherein a vertical cooling liquid collecting groove (8) is formed in the center of the vertical frame arm (41).
5. A deep hole feature processing method based on the deep hole feature processing device based on the rapid die change technology as claimed in any one of claims 1 to 4, characterized by comprising the steps of: The method comprises the steps of firstly, off-line clamping, namely fixedly mounting a part to be processed on a first quick-change part (1) outside a machine tool to form a part quick-change whole; Step two, feeding and reference machining, namely quickly replacing and integrally mounting the parts on a first quick-change female seat (2) of a machine tool working platform (3), locking, milling and/or drilling the parts, and machining a deep hole machining reference surface; step three, function switching, namely quickly replacing the machined part, integrally moving out of a machine tool, and mounting a deep hole clamping mechanism (4) on the first quick-change female seat (2) through a second quick-change piece (6) at the bottom of the deep hole clamping mechanism; Step four, workpiece transferring, namely quickly and integrally mounting the parts on a second quick-change female seat (5) at the top of the deep hole clamping mechanism (4) and locking the parts; Step five, deep hole processing preparation, namely installing a gun drill tool and a high-pressure cooling system on a machine tool, Step six, deep hole processing, namely using a gun drill tool to process the deep hole, and simultaneously introducing high-pressure cooling liquid into the drill hole; and seventh, blanking, namely quickly replacing the part with the part and integrally moving out of the machine tool after deep hole machining is completed.
6. The deep hole feature machining method of the deep hole feature machining device based on the rapid die change technology, which is disclosed in claim 5, is characterized in that in the sixth step, when the machining material is aluminum alloy, the cooling fluid pressure is not lower than 40bar, and when the machining material is titanium alloy, the cooling fluid pressure is not lower than 60bar.
7. The deep hole feature processing method based on the rapid die change technology, as set forth in claim 5, is characterized in that in the second step, the third step and the fourth step, the first rapid-change piece (1) and the first rapid-change female seat (2), the second rapid-change piece (6) and the first rapid-change female seat (2), and the first rapid-change piece (1) and the second rapid-change female seat (5) are matched with corresponding locking devices through blind rivets to achieve rapid clamping and locking.

Description

High-precision deep hole feature machining device and method based on rapid die changing technology Technical Field The invention relates to the technical field of machining, in particular to a high-precision deep hole feature machining device and method based on a quick die changing technology. Background In the aerospace field, many critical components (e.g., instrument housings, folding missile wings, aircraft engine components, etc.) are designed with high-precision deep hole structures having aspect ratios greater than 10 or even 20. The conventional machining process generally separates deep hole features from other features (such as reference surfaces of deep holes), namely milling and drilling the reference surfaces and other features are finished in a machining center, and then a workpiece is transported to a special deep hole drilling machine for deep hole machining. The process has obvious defects that 1) workpieces need to be circulated among different equipment, the production period and logistics cost are increased, 2) datum plane machining and deep hole machining are completed by two times of clamping, the accumulated clamping errors affect the position accuracy and coaxiality of the deep holes, the machining quality stability is poor, and 3) an expensive deep hole special machine is only used for a single process, and the equipment utilization rate is low. Therefore, there is an urgent need for a deep hole machining solution that can integrate multiple processes, reduce the number of clamping times, and improve machining accuracy and comprehensive efficiency of equipment. Disclosure of Invention The invention aims to overcome the defects in the prior art and provides a deep hole feature processing device and method based on a rapid die changing technology so as to realize efficient and high-quality composite processing of high-precision deep hole parts. In order to achieve the above object, according to one aspect of the present invention, there is provided a deep hole feature processing apparatus based on a rapid die change technique, comprising: The machine tool working platform is fixedly provided with a first quick-change female seat; The first quick-change piece is used for clamping a part to be processed; The bottom of the deep hole clamping mechanism is provided with a second quick-change piece matched with the first quick-change female seat, and the top of the deep hole clamping mechanism is provided with a second quick-change female seat; The first quick-change piece can be selectively connected with the first quick-change female seat or the second quick-change female seat in a detachable mode, and the deep hole clamping mechanism is connected with the first quick-change female seat in a detachable mode through the second quick-change piece at the bottom of the deep hole clamping mechanism. Further, the deep hole clamping mechanism comprises a vertical frame arm, a horizontal frame arm, guide limiting plates, a first motor and a second motor, wherein the bottom end of the vertical frame arm is arranged on the second quick-change piece, the guide limiting plates are provided with two guide limiting plates, the guide limiting plates are symmetrically arranged on the side wall of the vertical frame arm, the first motor is arranged on the vertical frame arm, the output end of the first motor is in transmission connection with a first screw rod in vertical arrangement, the first screw rod is in transmission connection with a first screw rod pair, the second motor is in sliding connection with the vertical frame arm through a sliding block, the sliding block is connected with the first screw rod pair, the horizontal frame arm is in sliding connection between the two guide limiting plates, the output end of the second motor is in transmission connection with a second screw rod in horizontal arrangement, the second screw rod is in transmission connection with the second screw rod pair, and the second screw rod pair is in transmission connection with the horizontal frame arm. Further, a guide sleeve mounting part is arranged at the top end of the vertical frame arm and towards one side of the horizontal frame arm. Further, a vertical cooling liquid collecting groove is formed in the center of the vertical frame arm. In order to achieve the above object, another aspect of the present invention provides a deep hole feature processing method of a deep hole feature processing device based on a rapid die change technology, comprising the steps of: the method comprises the steps of firstly, off-line clamping, namely fixedly mounting a part to be processed on a first quick-change part outside a machine tool to form a part quick-change whole; Step two, feeding and reference machining, namely quickly and integrally mounting the part on a first quick-change female seat of a machine tool working platform, locking, milling and/or drilling the part, and machining a deep hole machining reference surface;