Round nose knife with replaceable blade
Technical Field
The utility model relates to a round nose cutter, in particular to a round nose cutter with a replaceable blade, and belongs to the technical field of machining tools.
Background
The development of the cutter plays an important role in the history of human progress, copper cutters such as brass cones and red copper cones, drills and knives appear in China as early as 28 to 20 th century before the monarch, and in the late stage of the war nation (three century before the monarch), the copper tools were made thanks to the carburization technique, the drills and saws of the time being somewhat similar to the modern spade drills and saws, however, the rapid development of the tools was in the late 18 th century, with the development of machines such as steam engines, milling cutters were first made in le of france in 1783, taps and dies were made in mo tzli of the uk in 1792, the earliest documents on the twist drills were recorded in 1822, however, the tool is not produced as a commercial product until 1864 years, and the tool has great advantages in machining accuracy and machining efficiency compared with a conventional machining method, and therefore, the tool is widely used in the machining manufacturing industry.
The existing round nose knife has a simple structure:
1) the used cutter head is not provided with heat dissipation holes, so that high temperature generated by cutting of the cutter blade cannot be dissipated in time when the cutter head rotates at a high speed, and the cutter blade is easy to damage due to overhigh heat when working for a long time;
2) the blades and the cutter head are often in an integral structure, and although the cutter head has better stability, the worn blades are inconvenient to disassemble and replace after long-term use;
3) the used cutter bar and the used cutter seat are fixed together by welding, and although the connection is firm, the later disassembly and maintenance are inconvenient.
SUMMERY OF THE UTILITY MODEL
The present invention has been made to solve the above problems, and an object of the present invention is to provide a round nose cutter with a replaceable blade.
The utility model realizes the purpose through the following technical scheme: a round nose knife with replaceable blade comprises
The cutter body consists of a cutter disc at the top end and a blade for cutting; and
the cutter bar is arranged on the rear side surface of the cutter head of the cutter body and is in an integrated structure with the cutter head; and
the cutter holder consists of a connecting sleeve connected with the cutter bar and a disc-shaped mounting seat fixedly mounted on a milling machine, and the connecting sleeve is welded and fixed at the center of the inner end face of the mounting seat.
As a still further scheme of the utility model: the cutter head external diameter is greater than the cutter arbor external diameter, and cutter head outer end face center department has seted up the louvre.
As a still further scheme of the utility model: the top end of the outer side of the blade is provided with an arc-shaped tip, and the blade is made of a tungsten carbide rigid alloy material.
As a still further scheme of the utility model: two cutter grooves are formed in the top end of the outer side of the cutter disc, the cutter grooves are centrosymmetric, and the blades are detachably connected on the surfaces of the cutter grooves through two locking screws.
As a still further scheme of the utility model: the connecting sleeve is characterized in that three counter bores are formed in the center of the outer tangent plane of the connecting sleeve, inner hexagon bolts are arranged in the counter bores, and the connecting sleeve is detachably connected with the cutter bar through the inner hexagon bolts in a clamping sleeve mode.
As a still further scheme of the utility model: the mounting seat is characterized in that a square positioning groove is formed in the center of the outer end face of the mounting seat, four through holes are formed in the mounting seat, and the through holes are evenly distributed in the edge of the mounting seat.
The utility model has the beneficial effects that:
1) the center of the outer end surface of the cutter head is provided with a heat dissipation hole, so that the heat of the blade is transferred to the cutter head, and further the heat is continuously exchanged with the air through the heat dissipation hole, and the purpose of cooling is achieved;
2) the top end of the outer side of the blade is provided with an arc tip, the blade is made of a tungsten carbide rigid alloy material, the strength of the blade is improved, the service life of the blade is prolonged, the top end of the outer side of the cutter head is provided with two cutter grooves which are centrosymmetric, and the blade is detachably connected on the surfaces of the cutter grooves through two locking screws, so that the blade is more tightly connected, and meanwhile, the blade is convenient to maintain or replace in the later period;
3) the connecting sleeve and the cutter bar are connected in a detachable clamping sleeve mode through the hexagon socket head cap screw, assembling or disassembling is facilitated, four through holes are formed in the mounting seat, the through holes are evenly distributed in the edge of the mounting seat, and the bolt penetrates through the through holes to fix the cutter holder and the milling machine together in a positioning mode, so that the round nose cutter is fixed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front end view of the cutter head of the present invention;
FIG. 3 is a schematic view of a tool holder according to the present invention;
fig. 4 is a rear end view of the mount of the present invention.
In the figure: 1. the cutter comprises a cutter head, 2 parts of heat dissipation holes, 3 parts of cutter grooves, 4 parts of blades, 5 parts of locking screws, 6 parts of cutter rods, 7 parts of connecting sleeves, 8 parts of counter bores, 9 parts of inner hexagon bolts, 10 parts of mounting seats, 11 parts of through holes, 12 parts of positioning grooves.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1-4, a nose cone with replaceable blade includes
The cutter body consists of a cutter head 1 at the top end and a blade 4 for cutting; and
the cutter bar is arranged on the rear side surface of the cutter head 1 of the cutter body and is in an integrated structure with the cutter head 1; and
the cutter holder consists of a connecting sleeve 7 connected with the cutter bar 6 and a disc-shaped mounting seat 10 fixedly mounted on a milling machine, and the connecting sleeve 7 is fixedly welded at the center of the inner end face of the mounting seat 10.
In the embodiment of the utility model, the outer diameter of the cutter head 1 is larger than that of the cutter rod 6, and the heat dissipation hole 2 is formed in the center of the outer end face of the cutter head 1, so that the heat of the blade 4 is transferred to the cutter head 1, and further the heat is continuously exchanged with air through the heat dissipation hole 2, and the purpose of cooling is achieved.
In the embodiment of the utility model, the top end of the outer side of the blade 4 is provided with the arc-shaped tip, and the blade 4 is made of a tungsten carbide rigid alloy material, so that the strength of the blade 4 is improved, and the service life of the blade is prolonged.
In the embodiment of the utility model, the top end of the outer side of the cutter head 1 is provided with two cutter grooves 3, the cutter grooves 3 are centrosymmetric, and the blades 4 are detachably connected on the surfaces of the cutter grooves 3 through two locking screws 5, so that the connection of the blades 4 is firmer, and the blades 4 can be conveniently maintained or replaced at a later stage.
Example two
Referring to fig. 1-4, a nose cone with replaceable blade includes
The cutter body consists of a cutter head 1 at the top end and a blade 4 for cutting; and
the cutter bar is arranged on the rear side surface of the cutter head 1 of the cutter body and is in an integrated structure with the cutter head 1; and
the cutter holder consists of a connecting sleeve 7 connected with the cutter bar 6 and a disc-shaped mounting seat 10 fixedly mounted on a milling machine, and the connecting sleeve 7 is fixedly welded at the center of the inner end face of the mounting seat 10.
In the embodiment of the utility model, the center of the outer tangent plane of the connecting sleeve 7 is provided with three counter bores 8, the counter bores 8 are provided with the hexagon socket head cap screws 9, and the connecting sleeve 7 and the cutter bar 6 are detachably connected in a clamping sleeve through the hexagon socket head cap screws 9, so that the assembly or the disassembly is convenient.
In the embodiment of the utility model, a square positioning groove 12 is arranged at the center of the outer end face of the mounting seat 10, four through holes 11 are formed in the mounting seat 10, and the through holes 11 are uniformly distributed at the edge of the mounting seat 10, so that a bolt penetrates through the through holes 11 to position and fix the cutter seat and a milling machine together, thereby fixing the round nose cutter.
The working principle is as follows: when the round nose cutter with the replaceable blades is used, the blades 4 are firstly clamped on the surfaces of the cutter grooves 3 of the cutter head 1, the blades 4 are further fixed through the locking screws 5, then the cutter bar 6 is inserted into the central hole of the connecting sleeve 7, then three inner hexagonal bolts 9 respectively penetrate through the counter bores 8 so as to stably assemble the cutter bar 6 and the connecting sleeve 7 together, finally the cutter bar is positioned through the positioning grooves 12, the cutter seat and a milling machine can be positioned and fixed together through the bolts penetrating through the through holes 11 so as to fix the round nose cutter, during the working period of the cutter, the heat dissipation holes 2 at the center of the outer end surface of the cutter head 1 can transfer the heat of the blades 4 to the cutter head 1, and then the blades 4 are continuously subjected to heat exchange with air through the heat dissipation holes 2, so that the cooling purpose is realized, and each blade 4 is fixed through the two locking screws 5 so that the blades 4 are more tightly connected on the surfaces of the cutter grooves 3, and the maintenance or the replacement of the blades 4 at the later period is convenient, meanwhile, the connecting sleeve 7 and the cutter bar 6 are detachably connected through the inner hexagon bolt 9 in a clamping sleeve mode, and therefore the assembly or disassembly of the cutter bar is facilitated for personnel.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.