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CN-224209152-U - Drill bit connection structure with self-locking function

CN224209152UCN 224209152 UCN224209152 UCN 224209152UCN-224209152-U

Abstract

The utility model provides a drill bit connecting structure with a self-locking function, which belongs to the field of drill bits and comprises a drill rod and a drill bit, wherein the connecting component is fixedly connected with clamping rods at the left side and the right side of the top of the drill bit, clamping grooves are respectively formed in the left side and the right side of the bottom of the drill rod, an outer end block is also fixedly connected with the left side and the right side of the front side of the drill rod, a stepped groove is formed in one side of the outer end block, a clamping block is connected in the stepped groove in a sliding manner, a supporting block is fixedly connected with one side of the clamping block, a spring is also fixedly connected with one side of the stepped groove, two ends of the spring are respectively propped against one side of the stepped groove and one side of an adjacent clamping block, and arc grooves are formed in the drill rod and the outer end block. According to the utility model, through the connecting assembly, when the tool bit needs to be replaced, the new tool bit can be pushed upwards into the drill rod, self-locking can be realized, no additional connecting piece is needed for matching, the operation of replacing the tool bit is simple, the tool bit is labor-saving enough, and the tool bit is relatively convenient to use.

Inventors

  • Zang Fangfang
  • FANG WEI
  • ZHANG KUN

Assignees

  • 江苏山肯精密工具有限公司

Dates

Publication Date
20260508
Application Date
20250318

Claims (6)

  1. 1. A drill bit connection structure with self-locking function, characterized by comprising: a drill rod (1) and a tool bit (2); The connecting assembly is fixedly connected with clamping rods (3) on the left side and the right side of the top of the tool bit (2), clamping grooves (4) are respectively formed in the left side and the right side of the bottom of the drill rod (1), outer end blocks (5) are fixedly connected to the left side and the right side of the front side of the drill rod (1), stepped grooves (6) are formed in one side of each outer end block (5), clamping blocks (7) are connected in the stepped grooves (6) in a sliding mode, abutting blocks (8) are fixedly connected to one side of each clamping block (7), springs (9) are fixedly connected to one side of each stepped groove (6), two ends of each spring (9) are respectively abutted to one side of each stepped groove (6) and one side of each adjacent clamping block (7), arc grooves (10) are formed in the corresponding outer end blocks (5), adjusting rods (11) are movably connected in the arc grooves (10), and the two clamping blocks (7) are respectively arranged on the outer sides of the adjusting rods (11).
  2. 2. The drill bit connecting structure with the self-locking function according to claim 1, wherein a transverse stop block (12) is arranged on the clamping rod (3), and a chamfer is arranged at the top of the transverse stop block (12).
  3. 3. The drill bit connecting structure with the self-locking function according to claim 2, wherein an inclined plane is arranged at the bottom of the clamping block (7), a round hole is formed in one side of the clamping block (7), and interference fit is achieved between the round hole and the adjusting rod (11).
  4. 4. A drill bit connecting structure with a self-locking function according to claim 3, characterized in that the outer end block (5) is provided with a plurality of positioning holes, and the same position of the outer lower side of the drill rod (1) is provided with threaded holes.
  5. 5. The drill bit connecting structure with the self-locking function according to claim 4, wherein the maximum height of the stepped groove (6) is matched with the height of the abutting block (8), and the minimum height of the stepped groove (6) is matched with the maximum height of the clamping block (7).
  6. 6. The drill bit connecting structure with the self-locking function according to claim 5, wherein two end faces of the adjusting rod (11) are matched with the outer contour of the drill rod (1), and two end faces of the adjusting rod (11) are provided with anti-skid lines.

Description

Drill bit connection structure with self-locking function Technical Field The utility model relates to a drill bit technology, in particular to a drill bit connecting structure with a self-locking function. Background The drill is a main tool in the drilling operation machining process, and in order to ensure the machining quality of a machined hole, and considering the machining speed, different drill bits are generally required to be selected according to different machining objects. The drill bit on the market at present is usually that tool bit and drilling rod are integrative to be set up, when the tool bit appears damaging, need change whole drill bit, in order to save the cost, the drill bit of removable tool bit has appeared. The existing drill bit with most replaceable tool bits cannot be directly locked after being inserted when being connected with a drill rod, and auxiliary locking is needed by means of screws or pins, so that the structure has more connecting process steps, is laborious when the screws and the pins are detached and installed, and is inconvenient to use. Therefore, we propose a drill bit connecting structure with self-locking function to solve the above problems. Disclosure of utility model Aiming at the defects in the prior art, the utility model provides a drill bit connecting structure with a self-locking function, so as to solve the problems in the background art. The utility model aims at realizing the technical scheme that the drill rod comprises a drill rod and a tool bit; The connecting assembly is fixedly connected with clamping rods on the left side and the right side of the top of the tool bit, clamping grooves are respectively formed in the left side and the right side of the bottom of the drill rod, outer end blocks are fixedly connected to the left side and the right side of the front side of the drill rod, stepped grooves are formed in one side of the outer end blocks, clamping blocks are connected in the stepped grooves in a sliding mode, abutting blocks are fixedly connected to one sides of the clamping blocks, springs are fixedly connected to one sides of the stepped grooves, two ends of the springs are respectively abutted to the stepped grooves and one side of each adjacent clamping block, arc grooves are formed in the drill rod and the outer end blocks, adjusting rods are movably connected in the arc grooves, and the two clamping blocks are respectively arranged on the outer sides of the adjusting rods. Preferably, the clamping rod is provided with a transverse stop block, and the top of the transverse stop block is provided with a chamfer angle. Preferably, the bottom of fixture block is provided with the inclined plane, the round hole has been seted up to one side of fixture block, is interference fit between round hole and the regulation pole. Preferably, the outer end block is provided with a plurality of positioning holes, and the same position of the outer lower side of the drill rod is provided with threaded holes. Preferably, the maximum height of the step groove is matched with the height of the abutting block, and the minimum height of the step groove is matched with the maximum height of the clamping block. Preferably, two end surfaces of the adjusting rod are matched with the outer contour of the drill rod, and anti-skid lines are arranged on the two end surfaces of the adjusting rod. Compared with the prior art, the utility model has the beneficial effects that: Through the coupling assembling who sets up, can upwards push new tool bit in the drilling rod when needing to change the tool bit, can realize the auto-lock, need not extra connecting piece cooperation, change the easy operation of connecting the tool bit, and enough laborsaving, it is comparatively convenient to use. Drawings The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art. FIG. 1 is a schematic perspective view of the present utility model; FIG. 2 is a schematic cross-sectional view of the present utility model; FIG. 3 is an enlarged schematic view of portion A shown in FIG. 2; fig. 4 is a partially enlarged schematic construction of the present utility model. In the figure, 1, a drill rod, 2, a tool bit, 3, a clamping rod, 4, a clamping groove, 5, an outer end block, 6, a stepped groove, 7, a clamping block, 8, a supporting block, 9, a spring, 10, an arc-shaped groove, 11, an adjusting rod, 12 and a transverse block. Detailed Description The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scop