CN218638625U

CN218638625U - Reverse scraping tool

Info

Publication number: CN218638625U
Application number: CN202222614888.0U
Authority: CN
Inventors: 徐伏根; 王宝涛; 余求问; 黄飞; 朱培培; 孙宇龙; 吴景松; 池方越
Original assignee: Hangzhou Steam Turbine Power Group Co Ltd
Current assignee: Hangzhou Steam Turbine Power Group Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-03-17
Anticipated expiration: 2032-09-30

Abstract

The utility model provides an anti-scraper, relate to scraper technical field, including cutter arbor and tool bit, be equipped with the tool bit installation department on the cutter arbor, be equipped with entering face and the holding surface that sets up along the radial direction of cutter arbor on the tool bit installation department, the entering face begins in the one end of cutter arbor, the holding surface passes through the transition face with the entering face and is connected, transition face length is less than the length of holding surface, the entering face is the same with the holding surface radial dimension and all is less than the diameter of cutter arbor, be equipped with the hole on the tool bit, be equipped with the locking fitting surface in the hole, adopt this structure to fix a position locking, when can guarantee locking strength, quick assembly disassembly improves machining efficiency in the cutting process. The staggered teeth of the blade are distributed, so that the cutting force is reduced in the cutting process, the service life of the blade is prolonged, the arrangement of scrap iron is facilitated, the size specification and the arrangement mode of the blade can be adjusted according to the single-side allowance of the machining hole, and the machining stability is ensured.

Description

Reverse scraping tool

Technical Field

The utility model belongs to the technical field of the scraper technique and specifically relates to a reverse scraping cutter.

Background

In the numerical control boring processing, the inner end face of some holes needs to be processed in a reverse scraping mode, a rough boring cutter bar is usually adopted, the cutter bar extends into the holes, a reverse scraping cutter head is installed at the front end of the cutter bar, the cutter head is fixed through a screw, the end face processing is started in a reverse scraping mode, after the processing is finished, the cutter head needs to be detached, the cutter bar is withdrawn out of the holes, and a series of processing processes need to be carried out repeatedly, so that the processing efficiency is low. At present anti-scraper mostly adopts the hand mill white steel sword for the planarization of anti-bottom surface of scraping and the unity precision of diameter are difficult to guarantee, scrape the hole to the great anti-of radial surplus, are carrying out anti-scraping and add man-hour, and the cutting force is great, and machining efficiency is very low, and iron fillings are difficult to arrange, make iron fillings influence hole machining precision.

The prior counter blade therefore has the following problems: the disassembly and assembly operations are complex, the stability of the blade is insufficient, chip removal in the machining process is difficult, and the machining precision of the inner hole is influenced; the present application is proposed to address the above drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a reverse scraping cutter has solved above-mentioned problem, has that operation and dismouting are simple and convenient, the distribution of blade staggered teeth does benefit to iron fillings and arranges, the machining precision is high, is suitable for the anti-advantage of scraping the hole of large allowance.

In order to solve the problem, the utility model provides an anti-scraper, including cutter arbor and cutter head, be equipped with the cutter head installation department on the cutter arbor, be equipped with the edge on the cutter head installation department the entering face and the locking surface that the radial direction of cutter arbor set up, the entering face is originated in the one end of cutter arbor, the locking surface with the entering face passes through the transition face and connects, transition face length is less than the length of locking surface, the entering face with the locking surface radial dimension is the same and all is less than the diameter of cutter arbor, be equipped with the hole on the cutter head, be equipped with the locking fitting surface in the hole, install during the cutter head, the locking fitting surface by the entering face gets into, and the locking fitting surface is rotatory to be passed through behind the transition surface with the locking surface contact, then remove the cutter head makes the locking fitting surface move to the locking surface not with transition surface hookup location department realizes the locking installation of cutter head.

According to the utility model discloses an embodiment, be equipped with two at least cutting ends on the tool bit, all install the blade on the cutting end.

According to an embodiment of the present invention, two the blade side set on the cutting end is distributed.

According to the utility model discloses an embodiment, every the cutting end is last to be installed a plurality of blade.

According to the utility model discloses an embodiment, get into face and the setting of locking face mutually perpendicular.

According to the utility model discloses an embodiment, the transition face is the arc surface.

According to the utility model discloses an embodiment, the tool bit installation department of cutter arbor is the cylinder.

According to the utility model discloses an embodiment, install the navigation key in the hole, the locking fitting surface sets up on the navigation key.

According to the utility model discloses an embodiment, be equipped with the knife rest installation department on the cutter arbor.

According to the utility model discloses an embodiment, install the copper sheathing on the cutter arbor.

The beneficial effects of the utility model are that, through setting up entering face and holding surface, the locking fitting surface is in the middle of by entering face and holding surface front and back biplanar lock for tool bit location locking replaces the screw to fix at the cutter arbor front end, adopts this structure to fix a position locking, when can guarantee locking intensity, quick assembly disassembly improves machining efficiency in the cutting process.

The staggered teeth of the blade are distributed, so that the cutting force is reduced in the cutting process, the service life of the blade is prolonged, the arrangement of scrap iron is facilitated, the size specification and the arrangement mode of the blade can be adjusted according to the single-side allowance of the machining hole, and the machining stability is ensured. Compared with a hand-grinding white steel knife, the indexable reverse scraper can better ensure the flatness of the reverse scraping bottom surface and the uniformity of the diameter, and is more suitable for machining a large-allowance reverse scraping hole.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic view of an overall structure of a reverse scraper;

FIG. 2 is a schematic view of the tool holder;

FIG. 3 is a schematic view of a tool tip configuration;

FIG. 4 is a top view of the cutter head;

FIG. 5 is a schematic view of the tool tip when installed;

fig. 6 is a schematic diagram of the mounted cutter head.

Detailed Description

The following description is only intended to disclose the invention so as to enable any person skilled in the art to practice the invention. The embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other arrangements without departing from the spirit and scope of the invention.

A reverse scraping cutter comprises a cutter bar 1 and a cutter head 2, wherein the cutter bar 1 is in a step shape, the cutter bar 1 is a cylinder with two layers of steps in the embodiment, two planes are arranged on a higher step of the cutter bar 1 and used for positioning and locking when the cutter bar 1 is installed on a cutter holder, a copper sleeve 3 is installed on the cutter bar 1 and used for being in surface contact with a processed inner hole wall during reverse scraping machining, the inner wall is prevented from being scraped by cutter bar vibration, a cutter head installation part is arranged on a low-step ladder of the cutter bar 1, as shown in figure 2, an entering surface 11 and a locking surface 12 are arranged on the cutter head installation part in the radial direction of the cutter bar 1 and are perpendicular to each other, the entering surface 11 and the locking surface 12 are both planes, the entering surface 11 starts from one end of the cutter bar 1, the locking surface 12 is connected with the entering surface 11 through a transition surface 13, the length of the transition surface 13 is smaller than that of the locking surface 12, as can be understood by a person skilled in the art, the entering surface 11 and the locking surface 12 have the same radial size and are both smaller than the diameter of the cutter bar 1, as shown in figure 2, the locking surface 12 does not have the outer diameter of the head, and the outer diameter of the cutter bar 12 does not extend to the end of the cutter bar 1.

As shown in fig. 3 and 4, an inner hole 22 is formed in the tool bit 2, a locking matching surface 23 is formed in the inner hole 22, when the tool bit 2 is installed, the locking matching surface 23 enters from the entrance surface 11 and then moves backward until the end of the entrance surface 11 contacts with the convex surface, the tool bit 2 is rotated, the locking matching surface 23 rotates to pass through the transition surface 13 and then contacts with the locking surface 12, in the embodiment, the transition surface 13 is an arc surface, then the tool bit 2 moves forward to enable the locking matching surface 23 to move to the position where the locking surface 12 is not connected with the transition surface 13, the tool bit 2 cannot rotate, and the locking matching surface 23 is locked between the entrance surface 11 and the locking surface 12 by the front plane and the rear plane, so that the tool bit 2 is positioned and locked at the front end of the tool bar instead of a screw, the structure is used for positioning and locking, and the structure is used for positioning and locking, so that the tool bit can be quickly assembled and disassembled and the machining efficiency in the cutting process can be improved while the locking strength can be ensured.

The positioning key 4 is arranged in the inner hole 22, the locking matching surface 23 is arranged on the positioning key 4, the positioning key 4 is arranged on the inner wall of the front side of the inner hole 22 through a screw, and the inner diameter of the inner hole 22 is the same as the radial size of the inlet surface 11 and the locking surface 12.

As shown in fig. 3 and 4, at least two cutting ends 21 are arranged on the tool bit 2, blades are arranged on the cutting ends 21, two blades 501 are arranged on one cutting end 21, a blade 502 is arranged on the other cutting end, the blades are rhombic rough boring blades, the blades are all arranged in a screw compression mode, the sizes of the blades 501 and the blades 502 are different, the blades 501 and the blades 502 form a cutting surface together, and the cutting surfaces of the blades are not overlapped or not overlapped completely, so that staggered teeth distribution of the blades is formed, in the cutting process, the cutting force is reduced, the service life of the blades is prolonged, compared with the conventional blade arrangement, the size of a cutter disc arranged in staggered teeth is smaller, the arrangement is more facilitated, the size specification and the arrangement mode of the blades can be adjusted according to the allowance of a single side of a machining hole, and the machining stability is ensured. Compared with a hand-grinding white steel knife, the indexable reverse scraper can better ensure the flatness of the reverse scraping bottom surface and the uniformity of the diameter, and is more suitable for machining a large-allowance reverse scraping hole.

Preferably, in order to make the tool bit 2 more smoothly sleeved during installation, an inclined surface is arranged between the entrance surface 11 and the end of the tool holder 1, as shown in fig. 2.

It is to be understood by those skilled in the art that the embodiments of the present invention shown in the drawings and described above are by way of example only and are not intended to limit the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the invention have been shown and described in the embodiments without departing from the principles of the invention, embodiments of the invention may be subject to any deformation and modification.

Claims

1. The utility model provides a reverse scraping cutter which characterized in that: including cutter arbor (1) and cutter head (2), be equipped with the cutter head installation department on cutter arbor (1), be equipped with the edge on the cutter head installation department entering face (11) and locking surface (12) that cutter arbor (1) radial direction set up, entering face (11) begin in the one end of cutter arbor (1), locking surface (12) with entering face (11) are connected through transition face (13), transition face (13) length is less than the length of locking surface (12), entering face (11) with locking surface (12) radial dimension is the same and all are less than the diameter of cutter arbor (1), be equipped with hole (22) on cutter head (2), be equipped with locking fitting surface (23) in hole (22), install during cutter head (2), locking fitting surface (23) by entering face (11) get into, locking fitting surface (23) are rotatory to be passed through behind transition face (13) with locking surface (12) contact, then remove cutter head (2) make locking fitting surface (23) move to locking surface (12) with transition face (13) do not realize the junction position of transition face (13) the position (2).

2. The reverse scraping tool of claim 1, wherein: the cutting head (2) is provided with at least two cutting ends (21), and the cutting ends (21) are provided with blades (5).

3. A reverse scraping cutter according to claim 2, characterized in that: the blades (5) arranged on the two cutting ends (21) are distributed in a staggered manner.

4. A reverse scraping cutter according to claim 3, characterized in that: a plurality of blades (5) can be mounted on each cutting end (21).

5. A backscraving tool according to any one of claims 1 to 4, wherein: the entry surface (11) and the locking surface (12) are arranged perpendicular to each other.

6. A reverse scraping cutter according to claim 5, characterized in that: the transition surface (13) is a circular arc surface.

7. A reverse scraping cutter according to claim 1 or 6, characterized in that: the cutter head mounting part of the cutter bar (1) is a cylinder.

8. A reverse scraping cutter according to claim 7, characterized in that: install positioning key (4) in hole (22), locking fitting surface (23) set up on positioning key (4).

9. The reverse scraping tool of claim 1, wherein: and a tool rest mounting part is arranged on the tool bar (1).

10. The reverse scraping tool of claim 1, wherein: the cutter bar (1) is provided with a copper sleeve (3).