CN115815673A - Annular groove machining tool bit - Google Patents

Abstract

The invention provides a cutter head for machining annular grooves, which includes a cutting mechanism and an injection mechanism. The cutting mechanism includes a knife seat and a plurality of knife columns arranged on the knife seat, and the end surface of the knife column faces the direction of rotation. There are blades on the top of the knife column, and the blades on each of the knife columns correspond to a certain range of cutting radius. The top of the knife column is provided with a slope portion facing away from the direction of rotation; the injection mechanism is arranged in the tool seat , and the water spray holes of the spray mechanism are arranged on the slope portion. The invention adopts the internal cooling method. During the cutting process, the cutting fluid is accurately sprayed on the cutting position of the workpiece through the water spray hole on the cutter column, and the cooling and lubrication effects are greatly improved; the entire annular groove is divided into multiple parts during the cutting process. Simultaneous processing of three small ring grooves greatly improves work efficiency, and multiple blades work at the same time, which greatly reduces the vibration of the tool.

Description

A ring groove processing cutter head

technical field

The invention relates to the field of cutting tools, in particular to an annular groove processing cutter head.

Background technique

On the traction machine brake of the car elevator, it is necessary to set an annular groove for placing the coil. The processing of annular grooves is generally carried out on lathes at present, using end face grooving knives for processing. However, the cutting time of the face grooving knife is longer and the cutting efficiency is lower. In addition, cutting fluid needs to be sprayed during cutting to achieve cold cutting and lubricating effects. The current end face grooving knives need to be equipped with additional spraying pipelines, etc., which is inconvenient to use.

Some cutting knives adopt ring-shaped arrangement of cutter teeth, such as an integral milling cutter disclosed in the patent application No. Large, the chips are not easy to discharge, and it is easy to cause vibration and damage to the cutter body due to chip extrusion.

Contents of the invention

In order to solve the problems existing in the background technology, the present invention proposes an annular groove machining cutter head.

A cutter head for machining annular grooves, comprising a cutting mechanism and an injection mechanism, the cutting mechanism includes a knife seat and a plurality of knife columns arranged on the knife seat, and blades are arranged on the end surface of the knife column facing the direction of rotation , the blades on each of the knife columns correspond to a certain range of cutting radius, and the top of the knife column is provided with a slope portion facing away from the direction of rotation; the injection mechanism is arranged in the tool seat, and the injection mechanism The water spray holes are arranged on the slope part.

Based on the above, four knife columns are symmetrically arranged on the knife seat, one blade is arranged on the first knife column, two blades are respectively arranged on the second knife column, the third knife column and the fourth knife column, and the second The blades on the first knife post are higher than the blades on the second knife post, the third knife post and the fourth knife post.

Based on the above, the blades on the first knife column correspond to the two blades on the second knife column, the third knife column and the fourth knife column respectively.

Based on the above, the cutting radius ranges of the blades on each cutter column are set to have a certain overlapping range.

Based on the above, the spray mechanism includes a water spray hole communication pipe, the communication pipe is arranged at one end of the knife seat, the water spray holes are respectively connected to one end of the communication pipe, and the other end of the communication pipe is provided with Liquid inlet.

Based on the above, the spraying direction of the water spraying hole is set perpendicular to the rotation plane of the knife seat.

Based on the above, the tool seat is provided with a connecting through hole corresponding to the driving mechanism of the lathe.

Based on the above, the blade is detachably arranged on the knife column through screws.

Compared with the prior art, the present invention has outstanding substantive features and significant progress. Specifically, the present invention adopts the method of internal cooling. During the cutting process, the cutting fluid is accurately sprayed on the workpiece through the water spray holes on the cutter column. The cutting position, cooling and lubrication effects are greatly improved; during the cutting process, the entire annular groove is divided into multiple small annular grooves and processed at the same time, which greatly improves the work efficiency, and multiple blades work at the same time, which greatly reduces the vibration of the tool.

Description of drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a top view structural schematic diagram of the present invention.

Explanation of reference signs: 1. Knife seat; 2. Connecting pipe; 3. Connecting through hole; 4. Knife post; 5. Blade; 6. Spray hole.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1 and 2, a ring-shaped groove processing cutter head includes a cutting mechanism and a spraying mechanism, and the cutting mechanism includes a knife seat 1 and a plurality of knife posts 4 arranged on the knife seat 1, so Blades 5 are arranged on the end surface of the knife column 4 facing the direction of rotation, and the blades 5 on each of the knife columns 4 respectively correspond to a certain range of cutting radius, and the top of the knife column 4 is provided with a slope facing away from the direction of rotation. part; the spraying mechanism is set in the knife seat 1, and the spray hole 6 of the spraying mechanism is set on the slope part.

In practice, the tool holder 1 is provided with a connecting through hole 3. When in use, after the tool holder 1 is fixedly connected with the driving mechanism on the lathe by bolts, the driving mechanism drives the overall rotation of the cutter head. After the end of the knife column 4 is brought into contact with the cutting position, the rotating knife column 4 and the blade 5 cut the cutting position, and each blade 5 cuts an annular groove of a certain width, and multiple blades 5 work together to cut the desired Groove width ring groove. During the cutting process, the cutting fluid is sprayed from the water spray hole 6 to lubricate and cool the cutting position. In practice, the distance between the water spray hole 6 and the cutting position is about 1 mm, and the spray liquid will not be splashed during the rotation process. In the annular groove, the cutter column 4 and the water spray hole 6 are all in the annular groove, and the centrifugal force generated by the rotation will not cause jet splashing.

In this embodiment, four knife columns 4 are symmetrically arranged on the knife seat 1, one blade 5 is arranged on the first knife column, and two blades 5 are respectively arranged on the second knife column, the third knife column and the fourth knife column. blades 5, and the blades 5 on the first knife column are higher than the blades 5 on the second, third and fourth knife columns. In practice, the blade 5 on the first knife column is slightly higher than the blades 5 on the other knife columns 4 , which is 0.5 mm higher in reality, that is, firstly, a blade 5 performs a certain cutting and breaking effect on the cutting part. The blades on the first knife column correspond to the two blades on the second knife column, the third knife column and the fourth knife column respectively. That is to say, the blade 5 on the first knife column is correspondingly arranged in the middle position of the two blades 5 of other knife columns 4 . The blade 5 is detachably arranged on the knife column 4 by screws, which is convenient for disassembly and installation. The distance between the four cutter columns 4 is large, which facilitates the discharge of cutting chips.

In practice, the cutting radius ranges of the blades 5 on each cutter column 4 are set to a certain overlapping range. That is to say, the cutting range of the blade 5 has a certain overlap to avoid uncut positions. For example, the cutting radius range of the first knife column is 19-21mm, and the cutting radius range of a blade of the second knife column is 17-19.5mm. The other insert of the second column has a cutting radius in the range of 20.5mm-22mm.

Described injection mechanism comprises water spray hole 6 communication pipe 2, and described communication pipe 2 is arranged on one end of described knife seat 1, and described water spray hole 6 communicates with one end of described communication pipe 2 respectively, and the end of described communication pipe 2 The other end is provided with a liquid inlet. In practice, the spraying direction of the water spray hole 6 is set perpendicular to the rotating surface of the tool holder 1, and the other end of the communication pipe 2 is used to communicate with the liquid inlet pipe on the lathe before the tool holder 1 is connected to the lathe. In reality, the lathe The liquid inlet mechanism on the top is provided with a dynamic sealing mechanism corresponding to the connecting pipe 2, and the dynamic sealing mechanism adopts an existing dynamic sealing mechanism to ensure the sealing between the connecting pipe 2 and the liquid inlet mechanism when it rotates. After the connecting pipe 2 is connected and installed, the knife seat 1 is connected and fixed. The liquid inlet mechanism on the lathe provides cutting fluid and sprays from the water spray hole 6 during use.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (8)

1. The utility model provides an annular groove processing tool bit which characterized in that: the cutting mechanism comprises a cutter holder and a plurality of cutter posts arranged on the cutter holder, blades are arranged on the end faces of the cutter posts facing the rotating direction, the blades on each cutter post correspond to a cutting radius in a certain range, and a slope part facing away from the rotating direction is arranged at the top of each cutter post; the injection mechanism is arranged in the tool apron, and a water spraying hole of the injection mechanism is arranged on the slope portion.

2. The ring groove machining tool bit of claim 1, wherein: the cutter holder is symmetrically provided with four cutter posts, the first cutter post is provided with one blade, the second cutter post, the third cutter post and the fourth cutter post are respectively provided with two blades, and the blades on the first cutter post are higher than the blades on the second cutter post, the third cutter post and the fourth cutter post.

3. The ring groove machining tool bit of claim 2, wherein: the blades on the first tool post respectively correspond to the blades on the second tool post, the third tool post and the fourth tool post and are arranged between the blades.

4. The ring groove cutting insert of claim 2, wherein: the cutting radius range of the blade on each knife column is provided with a certain overlapping range.

5. The ring groove machining tool bit of claim 1, wherein: the injection mechanism comprises a water spray hole communicating pipe, the communicating pipe is arranged at one end of the cutter holder, the water spray holes are respectively communicated with one end of the communicating pipe, and the other end of the communicating pipe is provided with a liquid inlet.

6. The ring groove machining tool bit of claim 1, wherein: the spraying direction of the water spraying holes is perpendicular to the rotating surface of the cutter holder.

7. The ring groove machining tool bit of claim 1, wherein: and the tool apron is provided with a connecting through hole corresponding to a driving mechanism of the lathe.

8. The ring groove machining tool bit of claim 1, wherein: the blade is detachably arranged on the knife post through a screw.

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