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CN-224209178-U - Round nose coating knife with stepped cooling channel

CN224209178UCN 224209178 UCN224209178 UCN 224209178UCN-224209178-U

Abstract

The utility model discloses a circular nose coating knife with a stepped cooling channel, which comprises a fixed seat, a butt joint cavity, a milling cutter bar and a cooling unit, wherein the butt joint cavity is arranged on the fixed seat in a penetrating way, a mounting cavity is arranged in the fixed seat, the mounting cavity is positioned on one side of the butt joint cavity, and a locking assembly is arranged in the mounting cavity. The utility model has the beneficial effects that through the design of the stepped deepening channel, the effective contact area of the cooling liquid and the cutter body is greatly increased, the micro-jet effect generated by the stepped structure improves the critical heat flow density, the effective cooling time is prolonged to multiple times of that of the traditional cutter under the intermittent cutting working condition, the peeling rate of the cutter coating is greatly reduced, the service life of the milling cutter bar is greatly prolonged, meanwhile, the working efficiency is also improved, and through the arrangement of the locking component, the milling cutter bar and the supporting rod with different diameters can be synchronously locked, and the integral stability and the milling precision of the cutter during milling operation are improved.

Inventors

  • ZHANG RONGHUA
  • Chao Yafen
  • ZHANG JIAN

Assignees

  • 江苏熠天工具有限公司

Dates

Publication Date
20260508
Application Date
20250512

Claims (6)

  1. 1. The utility model provides a circle nose coating sword with cascaded cooling channel, includes fixing base (1), dock chamber (2), mills cutter arbor (3) and cooling unit, its characterized in that, dock chamber (2) run through and set up on fixing base (1), be provided with the installation cavity in fixing base (1), the installation cavity is located dock chamber (2) one side to be provided with locking Assembly in the installation cavity, mill cutter arbor (3) setting is in dock chamber (2) to through locking Assembly locking, cooling unit sets up on milling cutter arbor (3); The cooling unit comprises a supporting rod (4) and a cooling groove (5), wherein the supporting rod (4) is coaxially fixed at the bottom end of the milling cutter bar (3), the cooling groove (5) is concavely arranged on the side wall of the milling cutter bar (3), cavities are formed in the axis of the milling cutter bar (3) and the axis of the supporting rod (4), a plurality of spray holes are formed in the cooling groove (5), the spray holes are communicated with the cavities, and the cooling groove (5) is of a stepped structure.
  2. 2. The circular nose coating cutter with the stepped cooling channel according to claim 1, wherein one end, far away from the milling cutter bar (3), of the supporting rod (4) is coaxially fixed with a butt joint barrel (6), threads are arranged on the outer wall of the butt joint barrel (6), and the butt joint barrel (6) is connected with an external diversion pipeline through the threads.
  3. 3. The circular nose coating cutter with the stepped cooling channel according to claim 1, wherein the locking assembly comprises a supporting rod (7), a push rod (8) and a pressing plate (9), the supporting rod (7) is slidably arranged between the mounting cavity and the butt joint cavity (2), the push rod (8) is slidably arranged in the mounting cavity and is provided with a plurality of push rods (8) which are mutually abutted, and the pressing plate (9) is slidably arranged on one side, away from the supporting rod (7), of the mounting cavity and is slidably abutted with the push rod (8).
  4. 4. The circular nose coating cutter with the stepped cooling channel, as set forth in claim 3, is characterized in that one side of the fixing seat (1) is connected with a screw rod (10) through screw hole threads in a matching manner, and one end of the screw rod (10) is rotationally connected with the extrusion plate (9).
  5. 5. The circular nose coating knife with the stepped cooling channel according to claim 3, wherein an abutting disc (11) is coaxially fixed at one end, close to the push rod (8), of the abutting rod (7), a return spring (12) is sleeved on the abutting rod (7), one end of the return spring (12) abuts against the abutting disc (11), and the other end abuts against the inner wall of the installation cavity.
  6. 6. A nose-coating cutter provided with a stepped cooling channel according to claim 1, characterized in that the outer surface of the milling cutter arbor (3) is integrally provided with a diamond coating.

Description

Round nose coating knife with stepped cooling channel Technical Field The utility model relates to a circular nose coating knife, in particular to a circular nose coating knife with a stepped cooling channel, and belongs to the technical field of circular nose coating knives. Background The round nose coating milling cutter is used as a core cutting tool in the field of precision machining, and the round nose radius design of the end part of the ball head gives the cutter unique advantages in semi-finishing and finishing of a die cavity, an aerospace complex curved surface and other workpieces. However, most of the existing circular nose coating knives have various problems, the existing circular nose coating knives generally adopt an equal-depth spiral cooling groove design, although the structure can realize the conveying of basic cooling liquid, obvious defects ‌, such as unbalanced heat load distribution ‌, are exposed under the working condition of high speed processing, for example, the local temperature of the front knife face of the knife is higher, the effective coverage area of the traditional cooling liquid is lower than that of the high-temperature area, and the cooling area of the cooling groove with the equal section is insufficient, so that the knife must be stopped for cooling after one end of processing, and the processing economy is severely restricted. Disclosure of utility model The technical scheme of the utility model aims at solving the technical problem that the prior art is too single, provides a solution which is obviously different from the prior art, and particularly aims at solving the defects in the prior art, and provides a circular nose coating knife with a stepped cooling channel. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The circular nose coating knife comprises a fixed seat, a butt joint cavity, a milling cutter bar and a cooling unit, wherein the butt joint cavity is arranged on the fixed seat in a penetrating manner, a mounting cavity is arranged in the fixed seat and is positioned on one side of the butt joint cavity, a locking assembly is arranged in the mounting cavity, the milling cutter bar is arranged in the butt joint cavity and is locked through the locking assembly, and the cooling unit is arranged on the milling cutter bar; The cooling unit comprises a supporting rod and a cooling groove, the supporting rod is coaxially fixed at the bottom end of the milling cutter rod, the cooling groove is concavely arranged on the side wall of the milling cutter rod, cavities are formed in the milling cutter rod and the axle center of the supporting rod, a plurality of spray holes are formed in the cooling groove and communicated with the cavities, and the cooling groove is of a stepped structure. As a still further proposal of the utility model, one end of the supporting rod far away from the milling cutter bar is coaxially fixed with a butt joint cylinder, the outer wall of the butt joint cylinder is provided with threads, and the butt joint cylinder is connected with an external diversion pipeline through the threads. The locking assembly comprises a supporting rod, a push rod and a squeezing plate, wherein the supporting rod is arranged between the mounting cavity and the butt joint cavity in a sliding mode, the push rods are arranged in the mounting cavity in a sliding mode, the push rods are in mutual abutting joint, and the squeezing plate is arranged on one side, away from the supporting rod, of the mounting cavity in a sliding mode and is in sliding abutting joint with the push rods. As a still further scheme of the utility model, one side of the fixing seat is connected with a screw rod in a threaded fit manner through a screw hole, and one end of the screw rod is rotationally connected with the extrusion plate. As a still further scheme of the utility model, one end of the abutting rod, which is close to the push rod, is coaxially fixed with an abutting disc, a reset spring is sleeved on the abutting rod, one end of the reset spring abuts against the abutting disc, and the other end of the reset spring abuts against the inner wall of the mounting cavity. As a still further proposal of the utility model, the whole outer surface of the milling cutter bar is provided with a diamond coating. The beneficial effects of the utility model are as follows: According to the utility model, through the design of the stepped deepening channel, the effective contact area of cooling liquid and the cutter body is greatly increased, the micro-jet effect generated by the stepped structure improves the critical heat flow density, the effective cooling time is prolonged to multiple times of that of a traditional cutter under the intermittent cutting working condition, the peeling rate of the cutter coating is greatly reduced, the service life of the milling cutter bar is greatly prolonged, meanwhile, the working efficiency