阅读说明：本技术 一种小退刀槽人字齿轮轴的加工工装及加工方法 (Machining tool and machining method for herringbone gear shaft with small tool withdrawal groove ) 是由 梁林林 公法宾 刘传岛 张建亮 邢建刚 刘凯 冯红 周秉善 李广红 郑雷亚 于 2019-10-21 设计创作，主要内容包括：本发明提供了一种小退刀槽人字齿轮轴的加工工装及加工方法,所述工装包括工作台、半圆抱架、可调顶针和卡爪,所述卡爪均匀分布固定在工作台上,半圆抱架固定在工作台外围；所述可调顶针按适当角度固定在半圆抱架的顶面上、使其轴线延长线聚焦在开口圆弧的圆心处。加工时,将人字齿轮轴竖起,用卡爪夹紧；微调卡爪和可调顶针校正人字齿轮轴；调整好刀架角度,装好刀具；刀盒沿斜向导轨作往复直线运动,同时工作台旋转,完成人字齿轮轴上侧齿的加工；调整刀架使角度至对称方向,更换刀具,重新调节刀盒的进给冲程,使其从退刀槽处开始进刀,完成下侧齿的加工。本发明结构简单、容易操作、成本较低,解决了小退刀槽人字齿轮轴加工的难题。(The invention provides a machining tool and a machining method for a herringbone gear shaft with a small tool withdrawal groove, wherein the tool comprises a workbench, semicircular holding frames, adjustable thimbles and clamping jaws, the clamping jaws are uniformly distributed and fixed on the workbench, and the semicircular holding frames are fixed on the periphery of the workbench; the adjustable thimble is fixed on the top surface of the semicircular holding frame according to a proper angle, so that the axis extension line of the adjustable thimble is focused at the center of the opening arc. During processing, standing the herringbone gear shaft, and clamping by using a clamping jaw; the fine adjustment clamping jaw and the adjustable thimble correct the herringbone gear shaft; adjusting the angle of the tool rest, and installing a tool; the cutter box makes reciprocating linear motion along the oblique guide rail, and the workbench rotates at the same time to complete the processing of the upper side teeth of the herringbone gear shaft; and adjusting the tool rest to enable the angle to be in the symmetrical direction, replacing the tool, and readjusting the feed stroke of the tool box to enable the tool box to start feeding from the tool withdrawal groove so as to finish the machining of the lower side teeth. The invention has simple structure, easy operation and lower cost, and solves the problem of processing the herringbone gear shaft with the small tool withdrawal groove.)

1. The utility model provides a processing frock of little tool withdrawal groove herringbone gear axle which characterized in that: the adjustable ejector pin clamping device comprises a workbench (1), a semicircular holding frame (2), adjustable ejector pins (3) and clamping jaws (4), wherein the clamping jaws (4) are uniformly distributed and fixed on the workbench (1), and the semicircular holding frame (2) is fixed on the periphery of the workbench (1); the adjustable thimble (3) is fixed on the top surface of the semicircular holding frame (2) according to a proper angle, so that the axis extension line is focused at the center of the opening arc.

2. The processing tool of the herringbone gear shaft with the small tool withdrawal groove of claim 1 is characterized in that: the clamping jaw (4) is a vertical lathe clamping jaw.

3. The processing tool of the herringbone gear shaft with the small tool withdrawal groove of claim 1 is characterized in that: the semicircular holding frame (2) adopts a welded structure and comprises a bottom plate and a top plate, wherein the bottom plate is an arc-shaped plate, the top plate is a rectangular plate, a U-shaped opening is formed in the middle of the top plate, and a plurality of rib plates and rib plates are welded and reinforced between the top plate and the bottom plate.

4. The processing tool of the herringbone gear shaft with the small tool withdrawal groove of claim 1 is characterized in that: the adjustable thimble (3) is of an internal and external thread structure, and the extending length of the thimble is adjusted according to the diameter of the shaft.

5. The tool for machining a herringbone gear shaft with a small tool withdrawal groove as set forth in any one of claims 1 to 4, wherein: the herringbone gear shaft to be processed is erected, the lower end of the shaft is clamped through a clamping jaw (4), the middle part of the shaft is tightly embraced through an adjustable thimble (3), and the herringbone gear shaft to be processed can rotate along with the workbench (1).

6. A machining method for machining a herringbone gear shaft by using the machining tool as claimed in any one of claims 1 to 5 comprises the following steps: the method is characterized by comprising the following steps:

1) clamping a shaft: a herringbone gear shaft is erected in a vertical clamping mode, the lower end of the shaft is clamped by a clamping jaw (4), an adjustable thimble (3) is adjusted in the middle to tightly hold the shaft, lubricating oil is coated at the contact position, and the herringbone gear shaft is fixed on a workbench (1) and can rotate along with the workbench (1);

2) and (3) correcting the axis: pressing a dial indicator (5), starting a machine tool to slowly rotate the workbench (1), and finely adjusting the jaw (4) and the adjustable thimble (3) by using a wrench to correct the herringbone gear shaft;

3) processing of the shaft: adjusting the angle of the tool rest (7), installing a tool, and adjusting the feed stroke of the tool box (6); during processing, the cutter box (6) makes reciprocating linear motion along the oblique guide rail (8), and meanwhile, the workbench (1) rotates and is matched with radial feed motion to complete processing of the upper side teeth of the herringbone gear shaft; and adjusting the tool rest (7) to enable the angle to be symmetrical, replacing the tool, readjusting the feed stroke of the tool box (6) to enable the tool box to start feeding from the tool withdrawal position, and finishing the machining of the lower side teeth.

Technical Field

The invention relates to a machining tool and a machining method for a herringbone gear shaft with a small tool withdrawal groove, and belongs to the technical field of machining.

Background

The herringbone gear shaft is an important part of a high-speed level in a beam main transmission part in the mechanical press industry, and the herringbone gear structure is adopted, so that the noise generated by gear transmission can be reduced better. In order to reduce the tooth width and save the cost, a tool withdrawal groove designed on the herringbone gear shaft is smaller and is generally between 30 and 40 mm. At present, the machining of the herringbone gear shaft with the small tool withdrawal groove is still very difficult in the technical field of machining. Because the tool withdrawal groove is small, the hob can not be withdrawn when the tooth part is machined, so the hobbing machine can not be adopted for machining; and because the shaft is provided with a helical angle (generally between 10 and 30 degrees), a common slotting machine cannot process the shaft. At present, the processing of the shaft can only adopt the following methods, (one) traditional method: a Mulberry tooth planer made in English is adopted for gear shaping, and the horizontal machine tool is used for transversely placing a shaft, clamping a chuck, positioning a tailstock, driving the shaft to rotate by the chuck, and simultaneously, a tool rest performs reciprocating linear motion along an oblique guide rail and is matched with radial feed motion to complete the processing of the shaft. However, the sandland gear shaper is a scarce horizontal machine tool, has much worse working efficiency than hobbing, cannot realize batch processing, and affects the output period of the whole machine product. And (II) programming by using an imported four-axis linkage horizontal machining center, and interpolating milling. However, the equipment value is not good, general enterprises do not have purchasing ability, and the entrustment outside processing cost is also very high.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a processing method and a special tool for a small tool withdrawal groove herringbone gear shaft (as shown in figure 1) aiming at the defects in the prior art, realize secondary development of the Swiss Marge type gear shaping machine function and solve the processing problem of the small tool withdrawal groove herringbone gear shaft.

In order to solve the technical problem, the invention provides a machining tool for a herringbone gear shaft with a small tool withdrawal groove, which comprises a workbench, a semicircular holding frame, adjustable thimbles and clamping jaws, wherein the clamping jaws are uniformly distributed and fixed on the workbench, and the semicircular holding frame is fixed on the periphery of the workbench; the adjustable thimble is fixed on the top surface of the semicircular holding frame according to a proper angle, so that the axis extension line of the adjustable thimble is focused at the center of the opening arc.

The jack catch is a vertical lathe jack catch.

The semicircular holding frame adopts a welding structure and comprises a bottom plate and a top plate, wherein the bottom plate is an arc-shaped plate, the top plate is a rectangular plate, a U-shaped opening is formed in the middle of the top plate, and a plurality of rib plates and rib plates are welded and reinforced between the top plate and the bottom plate.

The adjustable thimble is of an internal and external thread structure, and the extending length of the thimble is adjusted according to the diameter of the shaft.

The herringbone gear shaft to be processed is erected, the lower end of the shaft is clamped through a clamping jaw, the middle part of the shaft is tightly held through an adjustable thimble, and the herringbone gear shaft to be processed can rotate along with the workbench.

A processing method for processing herringbone gear shafts comprises the following steps:

1) clamping a shaft: a herringbone gear shaft is erected in a vertical clamping mode, the lower end of the shaft is clamped by a clamping jaw, an adjustable thimble is adjusted in the middle to tightly hold the shaft, lubricating oil is coated at the contact position, and the herringbone gear shaft is fixed on a workbench and can rotate along with the workbench;

2) and (3) correcting the axis: pressing a dial indicator, starting a machine tool to enable the workbench to rotate slowly, and finely adjusting the clamping jaw and the adjustable thimble by using a wrench to correct the herringbone gear shaft;

3) processing of the shaft: adjusting the angle of the tool rest, installing a tool, and adjusting the feed stroke of the tool box; during machining, the cutter box makes reciprocating linear motion along the oblique guide rail, and meanwhile, the workbench rotates and is matched with radial feed motion to complete machining of the upper side teeth of the herringbone gear shaft; and adjusting the tool rest to enable the angle to be symmetrical, replacing the tool, readjusting the feed stroke of the tool box to enable the tool box to start feeding from the tool withdrawal groove, and finishing the machining of the lower side teeth.

The small tool withdrawal groove herringbone gear shaft machining center is simple in structure, easy to operate and low in cost, solves the problem of machining of small tool withdrawal groove herringbone gear shafts, can be suitable for machining herringbone gear shafts with different diameters, has good use value, breaks through the limitation that the small tool withdrawal groove herringbone gear shafts can only be machined by means of a sandland type gear planer and an imported four-shaft linkage horizontal machining center, and initiates a new machining method.

Drawings

FIG. 1 is a schematic structural view of a herringbone gear shaft with a small tool withdrawal groove;

FIG. 2 is a schematic top view of the structure of the present invention;

FIG. 3 is a schematic view of the step 1 of the shaft mounting and clamping and shaft processing of the present invention

FIG. 4 is a schematic view of an angle adjustment of a tool rest of the Magnet gear shaping machine according to the present invention;

FIG. 5 is a schematic view of the 2 nd step of shaft processing according to the present invention.

In the figure: 1 workbench, 2 semicircular newspaper racks, 3 adjustable thimbles, 4 claws, 5 dial indicators, 6 knife boxes, 7 knife rests and 8 guide rails.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

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

The invention provides a machining tool for a herringbone gear shaft with a small tool withdrawal groove, which comprises a workbench 1, semicircular holding frames 2, adjustable thimbles 3 and clamping jaws 4, wherein the clamping jaws 4 are uniformly distributed and fixed on the workbench 1, and the semicircular holding frames 2 are fixed on the periphery of the workbench 1; the adjustable thimble 3 is fixed on the top surface of the semicircular holding frame 2 according to a proper angle, so that the axis extension line is focused at the center of the opening arc.

The jaw 4 is a vertical lathe jaw.

The semicircular holding frame 2 is of a welded structure and comprises a bottom plate and a top plate, wherein the bottom plate is an arc-shaped plate, the top plate is a rectangular plate, a U-shaped opening is formed in the middle of the top plate, and a plurality of rib plates and rib plates are welded and reinforced between the top plate and the bottom plate.

The adjustable thimble 3 is of an internal and external thread structure, and the extending length of the thimble is adjusted according to the diameter of the shaft.

The herringbone gear shaft to be processed is erected, the lower end of the shaft is clamped through a clamping jaw 4, the middle part of the shaft is tightly held through an adjustable thimble 3, and the herringbone gear shaft to be processed can rotate along with the workbench 1.

The method for machining the herringbone gear shaft by using the tool comprises the following steps:

1) clamping of the shaft (as shown in fig. 3): a herringbone gear shaft is erected in a vertical clamping mode, the lower end of the shaft is clamped by a clamping jaw 4, an adjustable thimble 3 is adjusted in the middle to tightly hold the shaft, lubricating oil is coated at the contact position, and the herringbone gear shaft is fixed on a workbench 1 and can rotate along with the workbench 1;

2) correction of axes (as shown in fig. 4): pressing a dial indicator 5, starting a machine tool to enable the workbench 1 to rotate slowly, and finely adjusting the jaw 4 and the adjustable thimble 3 by using a wrench to correct the herringbone gear shaft;

3) machining of the shaft (as shown in fig. 5): adjusting the angle of the tool rest 7, installing a tool, and adjusting the feed stroke of the tool box 6; during processing, the cutter box 6 makes reciprocating linear motion along the oblique guide rail 8, and meanwhile, the workbench 1 rotates and is matched with radial feed motion to complete processing of the upper side teeth of the herringbone gear shaft; and adjusting the tool rest 7 to make the angle reach the angle in the symmetrical direction, replacing the tool, readjusting the feed stroke of the tool box 6 to feed the tool from the tool withdrawal position, and finishing the machining of the lower side teeth.

The tool solves the problem of processing the herringbone gear shaft with the small tool withdrawal groove, has simple structure, easy operation and lower cost, can be suitable for processing the herringbone gear shafts with different diameters, has good use value, breaks through the limitation that the herringbone gear shaft with the small tool withdrawal groove can only be processed by a Sandland gear shaper and an imported four-shaft linkage horizontal processing center, and initiates a new processing method.

The above-described embodiments of the invention are intended to be illustrative only and are not intended to be limiting, as all changes that come within the scope of or equivalence to the invention are intended to be embraced therein.