CN217290600U

CN217290600U - Planet carrier milling and opening cutter for drive axle

Info

Publication number: CN217290600U
Application number: CN202220813676.2U
Authority: CN
Inventors: 张凤仪; 龚泉; 刘剑敏; 黄宜辉
Original assignee: Jiangxi Fenyi Drive Axle Co ltd
Current assignee: Jiangxi Fenyi Drive Axle Co ltd
Priority date: 2022-04-08
Filing date: 2022-04-08
Publication date: 2022-08-26
Anticipated expiration: 2032-04-08

Abstract

The utility model relates to a mill cutter technical field of opening a grade, concretely relates to planet carrier for transaxle mills cutter of opening a grade comprises blade holder, cutter arbor, tool bit, blade, cutter arbor eccentric settings is on the blade holder, the tool bit is fixed to be set up in the cutter arbor and is kept away from blade holder one side, and the opening of quarter circle is seted up clockwise as the starting point in the tool bit center with the parallel department of overlapping of eccentric direction, one side of opening perpendicular to eccentric direction is provided with positive and negative two sets of blade installation positions, the blade divide into positive blade and negative blade, and positive blade and negative blade pass through bolted connection and install on the blade installation position that corresponds. The utility model has the advantages that: by eccentrically arranging the cutter bar and arranging the front and the back blades, the size of the cutter head is reduced, so that the process is simplified, the direct milling of the front and the back open faces after the boring of a workpiece is carried out by clamping once can be realized, and the processing efficiency is greatly improved; the shape of the eccentrically arranged cutter bar ensures the strength of the cutter bar, and the cutter is more reliable to use and has longer service life.

Description

Planet carrier milling and opening cutter for drive axle

Technical Field

The utility model relates to a mill cutter technical field of opening a grade, concretely relates to planet carrier mills cutter of opening a grade for transaxle.

Background

In the milling and gear opening processing of the planet carrier of the drive axle, due to the complex structure and the small processing space, the traditional process needs to increase the milling procedure, and the milling procedure needs to rotate a workpiece and clamp again when the gear opening of a hole is milled, the actions of feeding a cutter rod, stopping, installing a blade, milling a gear opening surface, stopping, detaching the blade and retreating the cutter rod are needed repeatedly when the cutter is processed, the processing time is long, the precision is influenced, and the processing efficiency is low. In the prior art, as for the front and back single-edge milling cutter for machining the low-speed machine frame, as 201720916107.X, although the milling cutter has the advantage that a workpiece does not need to be clamped again in the machining process, the cutter body is too large, so that the milling cutter cannot be applied to the gear opening machining of a planet carrier of a drive axle.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the technical problem who relates in the background art and provide a planet carrier mills cutter of opening a grade for the transaxle.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a planet carrier mills cutter of opening a grade for transaxle comprises blade holder, cutter arbor, tool bit, blade, cutter arbor eccentric settings is on the blade holder, the tool bit is fixed to be set up in the cutter arbor and is kept away from blade holder one side, and the opening of quarter circle is clockwise offered as the starting point in order to overlap the department with the parallel of eccentric direction in the tool bit center, one side of opening perpendicular to eccentric direction is provided with positive and negative two sets of blade installation positions, the blade divide into positive blade and negative blade, and positive blade and negative blade pass through bolted connection and install on the blade installation position that corresponds.

Furthermore, a reinforcing ring is arranged at the joint of the cutter bar and the cutter holder so as to increase the strength of the cutter bar.

Furthermore, the blade mounting position is provided with a sinking platform to increase the stability of the blade.

Furthermore, the sinking platform is triangular, and the shape of the blade is matched with that of the sinking platform, so that the service life of the blade is prolonged.

Furthermore, the blade holder is provided with the connection position, and the type of connection position can match according to the machine tool of choosing for use to improve the suitability of cutter.

Compared with the prior art, the utility model beneficial effect does: by eccentrically arranging the cutter bar and arranging the front and the back blades, the process is simplified due to the reduction of the size of the cutter head, the direct milling of the front and the back open faces after the boring of a workpiece is clamped once can be realized, and the processing efficiency is greatly improved; the shape of the eccentrically arranged rear cutter bar ensures the strength of the cutter bar, and the cutter is more reliable in use and longer in service life.

Drawings

FIG. 1 is an overall isometric view of the present invention;

FIG. 2 is a schematic view of the position of the blade mount;

FIG. 3 is a schematic cross-sectional view of the knife shaft;

FIG. 4 is a cross-sectional view of the blade mount;

FIG. 5 is a schematic view of the shape of the sink;

FIG. 6 is a schematic diagram of the location of a connection bit;

fig. 7 is a schematic view of a machining state of the tool.

In the figure, a tool holder 1, a tool bar 2, a tool bit 3, a blade 4, an opening 30, a blade mounting position 31, a positive blade 41, a negative blade 42, a reinforcing ring 20, a sinking platform 310 and a connecting position 10 are shown.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Example (b): referring to the attached drawings 1-7, a planet carrier milling open-gear cutter for a drive axle comprises a cutter holder 1, a cutter bar 2, a cutter head 3 and a cutter blade 4, and is used for enabling the cutter to be cutThe structure size can be designed to be smaller, the cutter bar 2 is eccentrically arranged on the cutter holder 1, the cutter head 3 is fixedly arranged on one side of the cutter bar 2, which is far away from the cutter holder 1, a quarter-circle opening 30 is clockwise formed in the center of the cutter head 3 by taking a position parallel to and overlapped with the eccentric direction as a starting point, one side of the opening 30, which is perpendicular to the eccentric direction, is provided with two sets of front and back blade mounting positions 31, the blade 4 is divided into a front blade 41 and a back blade 42, the front blade 41 and the back blade 42 are connected and mounted on the corresponding blade mounting positions 31 through bolts, and after the front blade 41 and the back blade 42 are arranged, under the condition of clamping a workpiece once, the milling of front and back open gear surfaces of one cutter can be realized, the clamping times are reduced, and the processing efficiency is improved; the eccentric cutter bar 2 and the cutter seat 1 are in a vertical hole shape in the axial direction, and the cross section area of the intersection of the cutter bar 2 and the cutter seat 1, which takes the eccentric amount of 18.36mm as an example, is 694.63mm ² The cross section of the cutter bar is equivalent to that of the cutter bar with the diameter of phi 29mm, but the bending resistance of the cutter bar is stronger than that of the cutter bar with the diameter of phi 29mm, so that the use strength of the cutter can be greatly improved.

Further, through stress calculation and analysis, the maximum stress position of the cutter is located at the position where the cutter bar is connected with the cutter holder in the machining process, and in order to prolong the service life of the cutter, a reinforcing ring 20 is arranged at the connection position of the cutter bar 2 and the cutter holder 1, so that the strength of the cutter bar 2 is increased.

Further, through stress calculation and analysis, the maximum displacement position of the cutter in the machining process is located between the blade and the blade mounting position, in order to ensure the stability of the blade in machining, the blade mounting position 31 is provided with a sinking platform 310, and after the blade 4 is mounted, at least one side edge except the bottom surface is in contact with the side edge of the sinking platform 310, so that the stability of the blade 4 in the machining process can be improved, and the displacement of the blade 4 is reduced.

Further, in order to ensure the machining precision and prolong the service life of the blade, the sinking platform 310 is set to be triangular, and the shape of the blade 4 is matched with that of the sinking platform 310; after the blade 4 is arranged to be triangular, the machining cutting edge can be replaced through transposition, and the service life of the blade is prolonged.

Further, the processing of the open gear surface of the planet carrier can be performed by using a vertical milling machine or a vertical boring machine, in order to improve the applicability of the tool, the tool apron 1 is provided with a connecting position 10, the type of the connecting position 10 can be matched according to the selected processing machine tool, and the type of the connecting position 10 can be the type of a known milling machine tool or boring machine tool.

The following specifically describes a machining process of milling and opening a gear by a cutter by taking the machining of a planet carrier for an engineering vehicle drive axle as an example:

the processing requirement of the planet carrier is as follows:

1. the diameter of the rough boring hole is phi 44.7 mm;

2. milling the maximum diameter: phi 72mm (the process of a tool nose is not considered to be 1-1.5mm, and a blank is eccentric by 2-3 mm);

3. milling the deepest size: 123 mm;

4. blank opening width: 76-5X 2-66 mm.

Planet carrier machining procedure:

rough milling open (boss removing high point) → rough boring (diameter leaving 0.2mm) → milling open → fine boring.

A cutter processing route:

the center of the cutter is arranged above the center of the part hole → the main shaft is oriented → the center of the eccentric part of the cutter rod is fed to the center of the part hole → the main shaft is fed to the open position → the center of the cutter is arranged above the center of the part hole → the upper and lower milling surfaces → the center of the eccentric part of the cutter rod is fed to the center of the part hole → the main shaft is withdrawn in the direction of the main shaft to the upper part of the center of the part hole → the center of the cutter is arranged above the center of the next part hole, and the actions are repeated until the open surfaces of all the holes are machined.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is: by eccentrically arranging the cutter bar and arranging the front and the back blades, the size of the cutter head is reduced, so that the process is simplified, the direct milling of the front and the back open faces after the boring of a workpiece is carried out by clamping once can be realized, and the processing efficiency is greatly improved; the shape of the eccentrically arranged rear cutter bar ensures the strength of the cutter bar, and the cutter is more reliable in use and longer in service life.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a planet carrier mills cutter of opening a grade for transaxle, comprises blade holder (1), cutter arbor (2), tool bit (3), blade (4), its characterized in that: cutter arbor (2) eccentric settings is on blade holder (1), cutter head (3) are fixed to be set up in cutter arbor (2) and keep away from blade holder (1) one side, and cutter head (3) center is with clockwise opening (30) of seting up the quadrant as the starting point with the parallel department of overlapping of eccentric direction, one side of opening (30) perpendicular to eccentric direction is provided with positive and negative two sets of blade installation positions (31), blade (4) divide into positive blade (41) and negative blade (42), and positive blade (41) and negative blade (42) are installed on corresponding blade installation position (31) through bolted connection.

2. The planet carrier milling open gear cutter for the drive axle according to claim 1, characterized in that: and a reinforcing ring (20) is arranged at the joint of the cutter bar (2) and the cutter holder (1).

3. The planet carrier milling open gear cutter for the drive axle according to claim 1, characterized in that: the blade mounting position (31) is provided with a sinking platform (310).

4. The planet carrier milling open gear cutter for the drive axle according to claim 3, characterized in that: the sinking platform (310) is triangular, and the shape of the blade (4) is matched with that of the sinking platform (310).

5. The planet carrier open gear milling tool for the drive axle according to any one of claims 1 to 4, wherein: the tool apron (1) is provided with a connecting position (10), and the type of the connecting position (10) can be matched according to a selected processing machine tool.