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CN-122007477-A - Twist drill bit with adjustable mounting structure

CN122007477ACN 122007477 ACN122007477 ACN 122007477ACN-122007477-A

Abstract

The invention relates to the technical field of drilling, in particular to a twist drill with an adjustable mounting structure, which comprises a power transmission shaft, wherein the end part of the power transmission shaft is fixedly connected with a mounting base, the inner wall of the mounting base is rotatably provided with a second rotating ring, the second rotating ring is fixedly connected with a screwing ring seat, the outer wall of the screwing ring seat is rotatably sleeved with a front-end metal ring, the outer wall of the front-end metal ring is fixedly connected with a cooling liquid buffer frame, a second rotating ball slides along the circumference of an inclined plane and can reciprocate up and down, at the moment, the second rotating ball carries a guide rod, a first rotating ball and a guide cover to reciprocate up and down synchronously, so that the guide cover swings back and forth around the rotating rod to realize reciprocating opening and closing, at the moment, cooling liquid sprayed outwards from a fixed pipe can be guided by the reciprocating opening and closing direction of the guide cover to different height positions of a twist drill body for cooling.

Inventors

  • WANG HONGJIA

Assignees

  • 上海钰工工具有限公司

Dates

Publication Date
20260512
Application Date
20260410

Claims (10)

  1. 1. The utility model provides a spiral drill bit with mounting structure with adjustable, includes power transmission shaft (1), its characterized in that tip fixedly connected with installation base (2) of power transmission shaft (1), the inner wall rotation of installation base (2) is installed second swivel becket (11), fixedly connected with is twisted circle seat (3) on second swivel becket (11), the outer wall rotation cover of twisting circle seat (3) is equipped with front end metal snare (4), the outer wall fixedly connected with coolant buffer frame (5) of front end metal snare (4), annular buffer chamber (25) have been seted up to the inner wall of coolant buffer frame (5), the inner wall fixed mounting of annular buffer chamber (25) has two fixed pipes (20), the inner wall fixedly connected with fixed plate (26) of fixed pipe (20), the inner wall rotation of fixed plate (26) is installed vortex fan (27), the one end fixedly connected with conflict piece (28) of vortex fan (27), the tip of conflict piece (28) has seted up conflict inclined plane (29), the outer wall fixedly connected with annular buffer chamber (25) has a plurality of annular projection (30) to contradict, install spherical lug (30) for supporting.
  2. 2. The twist drill with adjustable mounting structure according to claim 1, wherein the outer wall of the fixed tube (20) is fixedly connected with a fixed box (31), the inner wall of the fixed box (31) is rotatably provided with a rotating rod (32), the outer wall of the rotating rod (32) is fixedly connected with a guide cover (34), the rotating rod (32) is sleeved with a torsion spring (33), one end of the torsion spring (33) is fixedly connected with the inner wall of the fixed box (31), and the other end of the torsion spring (33) is fixedly connected with the outer wall of the guide cover (34).
  3. 3. The twist drill with adjustable mounting structure according to claim 2, wherein the outer wall of the guide cover (34) is rotatably provided with a first rotating ball (35), the outer wall of the first rotating ball (35) is fixedly connected with a guide rod (36), one end of the guide rod (36) is rotatably provided with a second rotating ball (37), and the second rotating ball (37) can collide with a plurality of collision convex blocks (30).
  4. 4. The twist drill with the adjustable mounting structure of claim 1, wherein the inner wall of the mounting base (2) is fixedly connected with a limiting sliding sleeve (8), the limiting sliding sleeve (8) is fixedly connected with a screwing ring seat (3), the inner wall of the limiting sliding sleeve (8) is in threaded connection with a threaded rod (9), and one end of the threaded rod (9) is fixedly connected with a limiting base (10).
  5. 5. The twist drill with adjustable mounting structure according to claim 4, wherein the outer wall of the limit base (10) is provided with a plurality of limit grooves (16), the inner walls of the limit grooves (16) are respectively provided with a sliding clamping jaw (14) for limiting the position of the triangular assembly handle (12) in a sliding manner, and the outer wall of the sliding clamping jaw (14) is fixedly connected with a limit lug (15).
  6. 6. The twist drill with adjustable mounting structure according to claim 5, wherein a plurality of sliding clamping jaws (14) are slidably connected to the inner wall of the screwing ring seat (3), and a plurality of limiting grooves (13) are formed in the outer wall of the triangular assembly handle (12).
  7. 7. The twist drill with adjustable mounting structure according to claim 5, characterized in that the end part of the triangular assembling handle (12) is fixedly connected with a twist drill main body (22), the outer wall of the twist drill main body (22) is fixedly connected with a first transmission gear (21), the outer wall of the first transmission gear (21) is in meshed connection with a second transmission gear (23), and the second transmission gear (23) is rotatably mounted on the outer wall of the cooling liquid buffer frame (5).
  8. 8. The twist drill with adjustable mounting structure according to claim 1, characterized in that a first rotating ring (6) is rotatably mounted on the outer wall of the cooling liquid buffer frame (5), one surface of the first rotating ring (6) is positioned in an annular buffer chamber (25), a transmission toothed ring (24) is fixedly connected to the inner wall of the first rotating ring (6), the transmission toothed ring (24) is meshed with a second transmission gear (23), and a fixing rod (38) for limiting the position of the cooling liquid buffer frame (5) is fixedly connected to the outer wall of the cooling liquid buffer frame (5).
  9. 9. The twist drill with adjustable mounting structure according to claim 8, characterized in that the first rotating ring (6) is fixedly connected with a high-pressure liquid injection pipe (7), the high-pressure liquid injection pipe (7) penetrates through the first rotating ring (6), and the first rotating ring (6) is communicated with the annular buffer chamber (25).
  10. 10. The twist drill with adjustable mounting structure according to claim 8, characterized in that the outer wall of the first rotating ring (6) is fixedly connected with two movable scraping blades (17), a plurality of water permeable holes (18) are formed in the outer wall of each movable scraping blade (17) in a penetrating mode, a cleaning brush (19) is fixedly connected to the outer wall of each movable scraping blade (17), and the outer contour of each cleaning brush (19) is matched with the inner contour of the annular buffer chamber (25).

Description

Twist drill bit with adjustable mounting structure Technical Field The invention relates to the technical field of drilling, in particular to a twist drill with an adjustable mounting structure. Background In the field of machining, drilling is a basic process for forming hole sites of parts, and is widely applied to cutting machining of various metal and nonmetal materials, the drilling quality and machining efficiency are directly related to the performance of a cutter, wherein a twist drill bit is used as a core cutter, and the structural design of the twist drill bit directly determines the size precision, the surface roughness and the chip removal effect of the hole. The conventional twist drill bit is cooled by adopting a coaxial water spraying cooling mode in the drill bit, and usually only the end head of the drill bit is cooled, while other positions of the drill bit except the end head are still easy to heat, so that the rest parts of the drill bit are easy to be heated for a long time and the service life is reduced. Disclosure of Invention The invention aims to provide a twist drill with an adjustable mounting structure, which solves the problems that the twist drill is easy to shake during drilling and easy to fracture during intense shaking, the coaxial water spray cooling mode can only cool the end head of the drill, and other positions of the drill except the end head are still easy to heat. The twist drill with the adjustable mounting structure comprises a power transmission shaft, wherein the end part of the power transmission shaft is fixedly connected with a mounting base, the inner wall of the mounting base is rotatably provided with a second rotating ring, the second rotating ring is fixedly connected with a screwing ring seat, the outer wall of the screwing ring seat is rotatably sleeved with a front-end metal ring sleeve, the outer wall of the front-end metal ring sleeve is fixedly connected with a cooling liquid buffer frame, the inner wall of the cooling liquid buffer frame is provided with an annular buffer chamber, the inner wall of the annular buffer chamber is fixedly provided with two fixing pipes, the inner wall of the fixing pipe is fixedly connected with a fixing plate, the inner wall of the fixing plate is rotatably provided with a vortex fan, one end of the vortex fan is fixedly connected with a collision block, the end part of the collision block is provided with a collision inclined plane, the outer wall of the collision inclined plane is fixedly connected with a plurality of collision bumps which are uniformly distributed in a hemispherical shape, and the outer wall of the fixing pipe is rotatably provided with a guide cover. Preferably, the outer wall fixedly connected with fixed box of fixed pipe, the inner wall of fixed box rotates and installs the dwang, the outer wall fixedly connected with direction lid of dwang, the cover is equipped with torsion spring on the dwang, torsion spring's one end and the inner wall fixed connection of fixed box, torsion spring's the other end and the outer wall fixed connection of direction lid. Preferably, the outer wall of the guide cover is rotatably provided with a first rotating ball, the outer wall of the first rotating ball is fixedly connected with a guide rod, one end of the guide rod is rotatably provided with a second rotating ball, and the second rotating ball can collide with a plurality of collision convex blocks. Preferably, the inner wall fixedly connected with spacing sliding sleeve of installation base, spacing sliding sleeve with revolve the round seat fixed connection of twisting, the inner wall threaded connection of spacing sliding sleeve has the threaded rod, the one end fixedly connected with spacing base of threaded rod. Preferably, the outer wall of the limit base is provided with a plurality of limit grooves, the inner walls of the limit grooves are respectively provided with a sliding clamping jaw for limiting the position of the triangular assembly handle in a sliding manner, and the outer wall of the sliding clamping jaw is fixedly connected with a limit lug. Preferably, a plurality of sliding clamping jaws are connected to the inner wall of the screwing ring seat in a sliding mode, and a plurality of limiting grooves are formed in the outer wall of the triangular assembly handle. Preferably, the end part of the triangular assembly handle is fixedly connected with a twist drill bit main body, the outer wall of the twist drill bit main body is fixedly connected with a first transmission gear, the outer wall of the first transmission gear is connected with a second transmission gear in a meshed manner, and the second transmission gear is rotatably arranged on the outer wall of the cooling liquid buffer frame. Preferably, the outer wall of coolant liquid buffer frame rotates installs first rotating ring, the one side of first rotating ring is in annular buffer chamber, the inner wall fixedly connected with