CN-116329680-B - Steering tool electrode mechanism and curved hole machining tool thereof

CN116329680BCN 116329680 BCN116329680 BCN 116329680BCN-116329680-B

Abstract

The invention discloses a steering tool electrode mechanism and a curved hole machining tool thereof, comprising an air chamber, a shell, an air cylinder, a transmission mechanism and a tool electrode, wherein the transmission mechanism and the tool electrode are arranged in the shell, the transmission mechanism comprises at least three shifting forks which are hinged in sequence, a supporting rod of the uppermost shifting fork extends into the air chamber through a connecting piece arranged at a first through hole, the connecting piece comprises a hemispherical swinging seat which is arranged on the first through hole in a sliding way and has a diameter larger than that of the first through hole, the supporting rod of the uppermost shifting fork penetrates through the spherical swinging seat and is fixed on the spherical swinging seat, a second through hole is opposite to the side wall of the supporting rod, and the tool electrode penetrates through the shell and is hinged with the lowest shifting fork.

Inventors

WANG LEI
NIU HAO
ZHANG CHUNYU

Assignees

青岛科技大学

Dates

Publication Date: 20260508
Application Date: 20230427

Claims (9)

1. The steering tool electrode mechanism is characterized by comprising an air chamber, a shell, an air cylinder, a transmission mechanism and a tool electrode, wherein the shell and the air cylinder are communicated with the air chamber through a first through hole and a second through hole respectively, the transmission mechanism is arranged in the shell, the tool electrode is arranged on the transmission mechanism, the transmission mechanism comprises at least three shifting forks which are hinged in sequence, a supporting rod of the uppermost shifting fork extends into the air chamber through a connecting piece arranged at the first through hole, the connecting piece comprises a hemispherical swing seat which is arranged on the first through hole in a sliding mode and has a diameter larger than that of the first through hole, the supporting rod of the uppermost shifting fork penetrates through the spherical swing seat and is fixed on the spherical swing seat, the second through hole is opposite to the side wall of the supporting rod, the tool electrode penetrates through the shell and is hinged with the lowest shifting fork, and the air cylinder is used for blowing the supporting rod; The U-shaped opening end of the shifting fork is provided with a first rotating shaft, the first rotating shaft penetrates through the two support arms of the U-shaped opening end, a steering block is arranged on the first rotating shaft, a second rotating shaft perpendicular to the first rotating shaft is arranged on the steering block, the support rods of the adjacent shifting fork are hinged with the second rotating shaft, and the planes of the support arms on the adjacent shifting fork are mutually perpendicular.
2. A steering tool electrode mechanism according to claim 1, wherein the air chamber is provided with a sealing ring at a position where it is connected to the housing.
3. The steering tool electrode mechanism according to claim 1, wherein a connecting pad is sleeved on the outer wall of the supporting rod of the uppermost layer of the shifting fork, a mounting hole is formed in the connecting pad, a threaded hole is formed in a position, corresponding to the mounting hole, of the spherical swing seat, and the supporting rod and the spherical swing seat are fixed through bolts penetrating through the mounting hole and the threaded hole in sequence.
4. A steering tool electrode mechanism according to claim 3, wherein an air lock with an inverted trapezoidal cavity is provided in the air chamber, the strut is provided in the inverted trapezoidal cavity, and the first through hole penetrates the air lock and communicates with the inverted trapezoidal cavity.
5. The steering tool electrode mechanism of claim 1, wherein the housing comprises an upper housing and a lower housing, the upper housing and the lower housing being removably connected by a locking pin.
6. A steering tool electrode mechanism according to claim 1, wherein said air cylinder communicates with said air chamber via an air delivery conduit.
7. A curved hole machining tool, characterized by comprising a base, a horizontal driving mechanism arranged on the base, a workbench arranged on the horizontal driving mechanism, a stand column arranged on the base, a vertical driving mechanism arranged on the stand column, a steering tool electrode mechanism arranged on the vertical driving mechanism and a pneumatic control system for controlling the air cylinder, wherein the steering tool electrode mechanism is used according to any one of claims 1 to 6.
8. The tooling of claim 7, wherein the horizontal drive mechanism comprises a stepper motor and a horizontal rail sequentially disposed, the stepper motor being coupled to the horizontal rail via a coupling.
9. The tooling for machining a curved hole according to claim 7, wherein the vertical driving mechanism comprises a bracket arranged on one side of the top of the upright, a servo motor arranged on the bracket, a synchronous small belt wheel connected with an output shaft of the servo motor, a synchronous large belt wheel arranged on the other side of the top of the upright and sequentially connected from top to bottom, an upper bearing seat, a synchronous belt rotating shaft, a lower bearing seat, a vertical shaft and screw shaft coupling, a screw shaft bearing seat, a screw shaft, a vertical guide rail arranged on the upright and a vertical feeding control system, wherein the synchronous small belt wheel is connected with the synchronous large belt wheel through a synchronous belt, the steering tooling electrode mechanism is connected with the screw in a meshed manner through a sliding seat arranged on the vertical guide rail, and the vertical feeding control system is used for controlling the movement of the sliding seat.

Description

Steering tool electrode mechanism and curved hole machining tool thereof Technical Field The invention relates to the technical field of curved hole machining, in particular to a steering tool electrode mechanism and a curved hole machining tool thereof. Background The development of the modern industry requires more new and complex mechanical structures to meet the increasing demands of users, while the overall development of the industry has also made some structures that were previously difficult to process because of manufacturability easier to process. Curved hole structures are often used in the design of various mechanical parts, particularly in the injection molding industry, because of their unique structure and function, it is common to form curved holes in a mold because of the proper cooling holes to control the mold temperature. The bent hole has great potential and wide application range. When the traditional machining is used for bending holes, the traditional machining is often limited by a cutter and a machining process, the machining requirements are difficult to reach, the aperture or the machining precision is limited even if the bending holes can be machined, and most of the traditional machining needs matched technology or equipment. The electric spark machining is the most common special machining method in the field of die manufacturing, and the electric spark machining of bent holes is most widely studied and has more results. The existing structure and technology of electric spark machining curved holes have been developed for many years, but still have some obvious problems, such as low machining efficiency, difficulty in one-step forming of the structure with large curvature change, loss of tool electrodes and the like. The numerical control electric spark machining device and the machining method for the precision tool electrode comprise a main machine base, a stand column base, an L-shaped stand column, a Z-axis guide rail base, a Z-axis driving motor, a workbench, a Y-axis guide rail, a Y-axis screw pair, a Y-axis driving motor, a Z-axis turntable, a servo spindle, a guide wire mechanism, an X-axis guide rail, an X-axis driving motor and the like, wherein the main machine base is a main body supporting body of the numerical control electric spark machining device, and the stand column base is fixed on the main machine base. In order to solve the problems, the invention provides a steering tool electrode mechanism and a curved hole machining tool thereof, which solve the problems of low machining efficiency and complex structure of the conventional electric spark machining device. Disclosure of Invention The invention aims to provide a steering tool electrode mechanism and a curved hole machining tool thereof, so as to achieve the purposes of improving the curved hole machining efficiency and reducing the complexity of a machining device. In order to achieve the above object, the present invention provides the following solutions: The utility model provides a turn to formula instrument electrode mechanism, includes the air chamber, respectively through first through-hole and second through-hole with casing and cylinder, setting up drive mechanism in the casing and setting up instrument electrode on the drive mechanism, drive mechanism is including articulated at least three shift fork in proper order, and the topmost the branch of shift fork extends to through the connecting piece that sets up first through-hole department in the air chamber, the connecting piece is including sliding setting up on the first through-hole and diameter is greater than the hemispherical swing seat of first through-hole diameter, the topmost the branch of shift fork runs through hemispherical swing seat and fixes on the hemispherical swing seat, the second through-hole is just right the lateral wall of branch, instrument electrode runs through the casing and with the lower floor the shift fork is articulated, the cylinder is used for right the branch is blown. Preferably, a sealing ring is arranged at the connection position of the air chamber and the shell. Preferably, a connecting pad is sleeved on the outer wall of the supporting rod of the uppermost layer of the shifting fork, a mounting hole is formed in the connecting pad, a threaded hole is formed in the position, corresponding to the mounting hole, of the hemispherical swing seat, and the supporting rod and the hemispherical swing seat are fixed through bolts penetrating through the mounting hole and the threaded hole in sequence. Preferably, an air plug with an inverted trapezoid cavity is arranged in the air chamber, the supporting rod is arranged in the inverted trapezoid cavity, and the second through hole penetrates through the air plug and is communicated with the inverted trapezoid cavity. Preferably, a first rotating shaft is arranged at the U-shaped opening end of the shifting fork, the first rotating shaft penetrates through two su