CN211661170U - Inner hole processing milling cutter with rough cutting and fine finishing functions - Google Patents

Abstract

An internal bore milling cutter with roughing and finishing functions, comprising: handle of a knife (1), a plurality of truing tool bit (2) and a plurality of thick tool bit (3) of opening, truing tool bit (2) are located handle of a knife (1) and open between thick tool bit (3), and a plurality of truing tool bit (2) are 360 circumference array mode and arrange, and a plurality of thick tool bit (3) of opening also are 360 circumference array mode and arrange. Above-mentioned hole processing milling cutter not only can realize opening thick and the truing function, has saved the time of changing cutter and tool setting, raises the efficiency and reduce cost greatly, guarantees product machining precision, can make rough machining have sufficient cutting force moreover, and the truing has sufficient stability.

Description

Inner hole processing milling cutter with rough cutting and fine finishing functions

Technical Field

The utility model relates to a milling cutter of hole processing especially relates to a milling cutter with open thick and finish trimming function.

Background

A milling cutter is a rotating tool with one or more cutter teeth for milling. When in work, each cutter tooth cuts off the allowance of the workpiece in sequence and intermittently. The milling cutter is mainly used for processing planes, steps, grooves, formed surfaces, cut-off workpieces and the like on a milling machine.

In the process of machining an inner hole, three procedures of drilling, roughing and finishing are generally needed, and the traditional process needs two milling cutters to respectively carry out the two procedures of roughing and finishing.

However, the above method not only consumes the cost of the cutter, but also has the problem of mutual matching between two milling cutters, and has extremely strict requirements on the dimensional precision of the cutter and the precision of a machine tool, so that the manufacturing difficulty is increased by phase change.

SUMMERY OF THE UTILITY MODEL

The utility model discloses technical scheme is to above-mentioned condition, and in order to solve above-mentioned problem and provide a hole processing milling cutter with open thick and finish repair function, hole processing milling cutter includes: the tool comprises a tool handle, a plurality of fine trimming tool bits and a plurality of rough cutting tool bits, wherein the fine trimming tool bits are positioned between the tool handle and the rough cutting tool bits, the fine trimming tool bits are arranged in a 360-degree circumferential array mode, and the rough cutting tool bits are also arranged in a 360-degree circumferential array mode; the outer end of the finishing cutter head is provided with a finishing cutter edge face, the edge position of the finishing cutter edge face is provided with a finishing cutter edge, the outer end of the roughing cutter head is provided with a roughing cutter edge face, the edge position of the roughing cutter edge face is provided with a roughing cutter edge, and the finishing cutter edge is positioned at a position closer to the outside than the roughing cutter edge.

Furthermore, chip grooves are formed between two adjacent finishing cutter heads and between two adjacent roughing cutter heads.

Further, the truing tool bit is also provided with a truing rear end face, a truing first side face and a truing second side face, the truing rear end face, the truing first side face and the truing second side face are respectively adjacent to three edges of a truing tool edge face, and the truing rear end face extends to the tool shank.

Further, it still has thick rear end face, opens thick first side and opens thick second side to open thick tool bit, open thick rear end face open thick first side with open thick second side respectively with open three limits of thick sword facet and adjoin, the first side of truing with open thick first side and form jointly a lateral wall of chip groove, the second side of truing with open thick second side and form jointly another lateral wall of chip groove.

Further, an inclined surface is arranged between the fine trimming blade face and the rough rear end face, and the inclined surface extends from back to front and inclines from inside to outside.

After the technical scheme is adopted, the utility model discloses an effect is: the inner hole processing milling cutter with the structure can realize the functions of roughing and finishing, saves the time for replacing a cutter and setting a cutter, greatly improves the efficiency and reduces the cost, ensures the processing precision of a product, can ensure that the roughing has enough cutting force and the finishing has enough stability.

Drawings

Fig. 1 is a schematic view of an inner hole processing milling cutter according to the present invention;

fig. 2 is a partial enlarged view of the milling cutter for machining an inner hole according to the present invention at the circle a.

Detailed Description

It is specifically noted that the terms "first", "second" and "third" in the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. All directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indicator is changed accordingly.

The technical solution of the present invention is further described below by way of examples:

the utility model provides a hole processing milling cutter with open thick and truing function, as shown in fig. 1, milling cutter includes: handle of a knife 1, a plurality of truing tool bits 2 and a plurality of thick tool bit 3 of opening, truing tool bit 2 is located handle of a knife 1 and opens between the thick tool bit 3, and a plurality of truing tool bits 2 are 360 circumference array mode and arrange, and a plurality of thick tool bits 3 of opening also are 360 circumference array mode and arrange. Referring to fig. 2, the finishing bit 2 has a finishing bit face 21 at an outer end (i.e., a position away from the milling cutter axis), a finishing bit 22 at an edge position of the finishing bit face 21, a roughing bit face 31 at an outer end of the roughing bit 3, a roughing bit 32 at an edge position of the roughing bit face 31, and the finishing bit 22 is located further outward than the roughing bit 32 (i.e., the width of the finishing bit 2 is greater than the width of the roughing bit 3).

When the milling cutter for machining the inner hole works, a product is machined by the rough cutter head 3 at the front end, and the allowance is removed; after finishing, the cutter is moved forward for a certain depth, and a product is machined by the fine trimming cutter head 2 positioned at the rear end of the roughing cutter head 3. The cutter does not need to be disassembled and replaced midway, and the cutter does not need to be reset. Furthermore, by providing the roughing head 3 at the foremost end and the finishing head 2 at the rear end of the roughing head 3, it is possible to provide sufficient cutting force for roughing and sufficient stability for finishing, on the one hand.

Specifically, with continued reference to fig. 1, chip flutes 4 are formed between two adjacent finishing bits 2 and between two adjacent roughing bits 3. The chip groove 4 can discharge chips generated during rough machining and fine machining, and machining fluency is guaranteed.

Specifically, with continued reference to fig. 2, the truing head 2 further has a truing rear end surface 23, a truing first side surface 24, and a truing second side surface 25, the truing rear end surface 23, the truing first side surface 24, and the truing second side surface 25 are respectively adjacent to three edges of the truing edge surface 21, and the truing rear end surface 23 extends to the shank 1.

More specifically, the roughing tool tip 3 further has a roughing rear end face 33, a roughing first side face 34 and a roughing second side face 35, the roughing rear end face 33, the roughing first side face 34 and the roughing second side face 35 are respectively adjacent to three edges of the roughing edge face 31, the finishing first side face 24 and the roughing first side face 34 together form one side wall of the chip groove 4, and the finishing second side face 25 and the roughing second side face 35 together form the other side wall of the chip groove 4.

More specifically, between the finishing edge face 21 and the roughing rear end face 33, there is provided an inclined face 5, and the inclined face 5 extends from the rear to the front and is inclined outward from the inside (i.e., a position near the mill axial center). Inclined plane 5 is equivalent to leave one section clearance distance between truing tool bit 2 and opening thick tool bit 3 to shelter from the front end of truing tool bit 2, can avoid opening thick in-process misuse truing tool bit 2.

Therefore, the inner hole processing milling cutter with the structure can realize the functions of rough cutting and fine trimming, saves the time for replacing a cutter and setting a cutter, greatly improves the efficiency and reduces the cost, ensures the processing precision of a product, can ensure that the rough processing has enough cutting force and the fine trimming processing has enough stability.

The above-mentioned embodiments are merely preferred examples of the present invention, and do not limit the scope of the present invention, so all equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.

Claims (5)

1. The utility model provides an inner bore processing milling cutter with open thick and finish trimming function which characterized in that: the milling cutter for processing the inner hole comprises: the tool comprises a tool shank (1), a plurality of fine trimming tool bits (2) and a plurality of rough cutting tool bits (3), wherein the fine trimming tool bits (2) are positioned between the tool shank (1) and the rough cutting tool bits (3), the fine trimming tool bits (2) are arranged in a 360-degree circumferential array mode, and the rough cutting tool bits (3) are also arranged in a 360-degree circumferential array mode; the outer end of the fine trimming cutter head (2) is provided with a fine trimming cutter edge face (21), the edge position of the fine trimming cutter edge face (21) is provided with a fine trimming cutter edge (22), the outer end of the roughing cutter head (3) is provided with a roughing cutter edge face (31), the edge position of the roughing cutter edge face (31) is provided with a roughing cutter edge (32), and the fine trimming cutter edge (22) is located at a position closer to the outside than the roughing cutter edge (32).

2. The internal bore machining milling cutter with roughing and finishing functions as recited in claim 1, wherein: chip grooves (4) are formed between two adjacent finishing cutter heads (2) and between two adjacent rough cutter heads (3).

3. The internal bore machining milling cutter with roughing and finishing functions as recited in claim 2, wherein: the fine trimming tool bit (2) is further provided with a fine trimming rear end face (23), a fine trimming first side face (24) and a fine trimming second side face (25), the fine trimming rear end face (23), the fine trimming first side face (24) and the fine trimming second side face (25) are respectively adjacent to three edges of the fine trimming tool edge face (21), and the fine trimming rear end face (23) extends to the tool shank (1).

4. The internal bore machining milling cutter with roughing and finishing functions as recited in claim 3, wherein: it still has thick rear end face (33), opens thick first side (34) and opens thick second side (35) to open thick tool bit (3), open thick rear end face (33), open thick first side (34) with open thick second side (35) respectively with open three limits of thick sword flank (31) and adjoin, truing first side (24) with it forms jointly to open thick first side (34) a lateral wall of chip groove (4), truing second side (25) with it forms jointly to open thick second side (35) another lateral wall of chip groove (4).

5. The internal bore machining milling cutter with roughing and finishing functions as recited in claim 4, wherein: an inclined surface (5) is arranged between the finishing cutter edge surface (21) and the roughing back end surface (33), and the inclined surface (5) extends from back to front and inclines from inside to outside.

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