阅读说明：本技术 一种粗精分体的筒式拉削精密刀筒 (Rough and fine split barrel type broaching precision knife barrel ) 是由 许尖 陈子彦 潘明锋 张云凯 郁爱佳 冯叶飞 于 2020-06-23 设计创作，主要内容包括：本申请属于机械装备技术领域,特别涉及一种粗精分体的筒式拉削精密刀筒,包括粗刀外筒、精刀外筒、14个小刀套、精刀筒刀套、定位板、上端盖、下底座、粗刀筒上端盖、精刀筒底座、上中下对中套、支撑环、支撑环内套、工件涨紧装置和刀具。所述的粗刀外筒与14个小刀套过渡配合,用14个锥度销定位和固定。所述的定位板与机床用定位销连接,保证整个刀筒轴向方向与底部机床安装面的垂直度。所述的支撑环内套与下对中套同心,与支撑环同轴且用螺钉连接,保证整套拉削装置与推进器支撑杆的同轴度；所述的下底座与机床用机床压块机构固定；所述的工件涨紧装置与工件内径接触,用于固定工件；所述的刀具包括粗刀条、精刀和精刀环。(The utility model belongs to the technical field of mechanical equipment, in particular to thick smart minute sword section of thick bamboo broaching of components of a whole that can function independently precision sword section of thick bamboo, including thick sword urceolus, smart sword urceolus, 14 little tool sleeves, smart sword section of thick bamboo tool sleeve, locating plate, upper end cover, lower base, thick sword section of thick bamboo upper end cover, smart sword section of thick bamboo base, upper and lower centering cover, support ring endotheca, work piece rise tightly and tightly install and the cutter. The outer cylinder of the coarse cutter is in transition fit with 14 small cutter sleeves, and is positioned and fixed by 14 taper pins. The positioning plate is connected with the positioning pin for the machine tool, so that the perpendicularity of the axial direction of the whole knife cylinder and the installation surface of the machine tool at the bottom is ensured. The inner sleeve of the support ring is concentric with the lower centering sleeve, is coaxial with the support ring and is connected with the support ring by a screw, so that the coaxiality of the whole broaching device and the support rod of the propeller is ensured; the lower base is fixed with a machine tool pressing block mechanism for the machine tool; the workpiece tensioning device is in contact with the inner diameter of the workpiece and is used for fixing the workpiece; the cutter comprises a rough cutter strip, a fine cutter and a fine cutter ring.)

1. The utility model provides a cylinder broaching precision knife section of thick bamboo of smart components of a whole that can function independently which characterized in that includes: the outer circle of the coarse cutter outer cylinder (7) is provided with a plurality of pin holes and hundreds of counter bores; the 14 small knife sleeves (713) are in transition fit with the outer cylinder (7) of the rough knife and are positioned and fixed on the inner wall of the outer cylinder (7) of the rough knife by 14 taper pins (710); the inner wall of the fine cutter outer cylinder (4) is provided with 1 key groove, and the excircle is provided with 3 counter bores; the fine cutter barrel cutter sleeve (412) is in transition fit with the fine cutter outer barrel (4), and is positioned by the fine cutter barrel positioning long key (410) and the cutter ring positioning key (411) and connected by screws; the upper end cover (6) of the coarse cutter cylinder is connected with the upper end surface of the coarse cutter outer cylinder (7) through a screw;

the lower base (8) is connected with the lower end surface of the rough cutter outer cylinder (7) through a screw and is fixed with a machine tool pressing block mechanism for a machine tool; the upper end cover (3) is connected with the upper end surface of the fine cutter outer cylinder (4) through screws; the fine cutter barrel base (5) is connected with the lower end face of the fine cutter outer barrel (4) through a screw; the positioning plate (1) is connected with the upper end surface of the upper end cover (3) through a screw; the upper centering sleeve (310) is connected with the lower end face of the upper end cover (3) through a screw;

the middle centering sleeve (611) is connected with the lower end face of the upper end cover (6) of the coarse cutter cylinder through a screw;

the lower centering sleeve (811) is connected with the upper end surface of the lower base (8) by a screw;

a support ring (9) positioned with the machine tool by means of a positioning key-machine tool (910);

the support ring inner sleeve (911) is concentric with the lower centering sleeve (811), is coaxial with the support ring (9) and is connected with the support ring by a screw, so that the coaxiality of the whole broaching device and the support rod of the propeller is ensured;

the workpiece tensioning device (2) comprises a propeller (210) for supporting the bottom of the workpiece and an expansion sleeve contacted with the inner diameter of the workpiece;

the thick knife strip (711) is connected with 14 small knives (713) by screws;

the fine knife (413) is connected with the fine knife cylinder knife sleeve (412) through a screw;

and the fine cutter ring (414) is arranged in the fine cutter outer cylinder (4).

2. The cylinder type broaching precision cutter cylinder of a rough and fine split body as claimed in claim 1, wherein the upper end cover (6) of the rough cutter cylinder is provided with a key groove and a pin hole, the base (5) of the fine cutter cylinder is provided with two key grooves, and a positioning key, namely the upper end cover (610) of the rough cutter cylinder, ensures the position relation of the upper end cover (6) of the rough cutter cylinder and the outer cylinder (7) of the rough cutter; the positioning key, the fine cutter cylinder base (511), the positioning pin and the fine cutter cylinder base (510) ensure the position relation between the upper end cover (6) of the coarse cutter cylinder and the fine cutter cylinder base (5); the fine knife cylinder positioning long key (410) and the knife ring positioning key (411) ensure the position relation between the fine knife outer cylinder (4) and the fine knife cylinder base (5). Through the series of positioning, the correct position relation among the coarse cutter strip (711), the fine cutter (713) and the fine cutter ring (714) is ensured.

3. The cylinder type broaching precision tool cylinder of a rough and fine split body as claimed in claim 1, wherein the positioning plate (1) is connected with a machine tool by a positioning pin-machine tool (110) to ensure the perpendicularity of the axial direction of the whole tool cylinder and the installation surface of the bottom machine tool.

4. The cylinder type broaching precision tool cylinder of the rough and fine components as claimed in claim 1, wherein the lower base (8) is provided with two key slots, the support ring (9) is provided with one key slot, the positioning key-lower base (810) ensures the positional relationship of the lower base (8) and the rough tool outer cylinder (7), and the positioning key-machine tool (910) ensures the positional relationship of the lower base (8) and the support ring (9) and the machine tool. Through the series of positioning, the position relation between the machine tool and the whole broaching device is ensured.

5. The cylinder type broaching precision tool cylinder of the rough and fine components as claimed in claim 1, wherein n guide bars (712) are arranged on the internal spline of the 14 small tool sleeves (713) in a front-back staggered manner, and the propellers (210) are supported on the circumference, so that the coaxiality of the propellers (210) and the small tool sleeves (713) in the broaching process is ensured.

6. The cylinder type broaching precision tool cylinder of the coarse and fine components as claimed in claim 1, wherein n coarse tool bars (711) are arranged on the internal spline of the 14 small tool sleeves (713) in a staggered manner from front to back to avoid the guide bars, so that the number of the coarse tool bars (711) participating in broaching simultaneously is reduced, the broaching force is reduced, and the phenomena of pulling and chip jamming are avoided.

7. The cylinder type broaching precision cutter cylinder of the rough and fine components as claimed in claim 1, wherein the fine cutter ring (414) is in transition fit with the fine cutter outer cylinder (4), is positioned by the fine cutter cylinder positioning long key (410) and the cutter ring positioning key (411), is pressed against the fine cutter cylinder base (8) through the upper end cover (3), and is fixed in the fine cutter outer cylinder (4).

The technical field is as follows:

the application belongs to the technical field of mechanical equipment, and in particular relates to a cylinder broaching precision knife cylinder with a coarse body and a fine body.

Background art:

the synchronizer is an important component of the transmission, and the splined hub is an important part of the synchronizer. Therefore, the dimensional accuracy and surface roughness are required to be high. The common method for processing the external spline and the external keyway of the spline hub comprises two steps of rolling the external spline and then drawing the external keyway. Therefore, the machining efficiency is low, the size of the workpiece is unstable, and the external spline with a plurality of special-shaped teeth cannot be rolled.

For solving above-mentioned problem, this application provides a cylindrical broaching precision knife section of thick bamboo of the thick and smart components of a whole that can simultaneous processing of external spline and excircle keyway, promotes machining efficiency, keeps the dimensional stability, improves size precision.

The invention content is as follows:

in order to achieve the purpose, the technical scheme of the application is as follows: a coarse and fine split cylinder type broaching precision knife cylinder comprises a coarse knife outer cylinder, a fine knife outer cylinder, 14 small knife sleeves, a fine knife cylinder knife sleeve, a positioning plate, an upper end cover, a lower base, a coarse knife cylinder upper end cover, a fine knife cylinder base, an upper, middle and lower centering sleeve, a support ring inner sleeve, a workpiece tensioning device and a knife. The outer cylinder of the coarse cutter is in transition fit with 14 small cutter sleeves, and is positioned and fixed by 14 taper pins. The positioning plate is connected with the upper end cover through a screw; the positioning plate is connected with a positioning pin for a machine tool, so that the perpendicularity of the axial direction of the whole cutter cylinder and the installation surface of the machine tool at the bottom is ensured. The fine cutter outer cylinder is in transition fit with the fine cutter cylinder cutter sleeve, is positioned by a positioning key and is connected by a screw; the fine cutter outer cylinder and the fine cutter cylinder base are positioned by a positioning key and connected by a screw; the fine knife cylinder base and the upper end cover of the coarse knife cylinder are positioned by keys and connected by screws. The outer thick cutter barrel and the upper end cover of the thick cutter barrel are positioned by a positioning key and connected by a screw; the outer cylinder of the rough cutter is positioned with the lower base by a key and connected by a screw. The upper, middle and lower centering sleeves are connected with the upper end cover, the upper end cover of the thick cutter cylinder and the lower base through screws; the inner sleeve of the support ring is concentric with the lower centering sleeve, is coaxial with the support ring and is connected with the support ring by a screw, so that the coaxiality of the whole broaching device and the support rod of the propeller is ensured; the lower base and the support ring are positioned by a positioning key and are connected by screws; the support ring and the machine tool are positioned by a positioning key, and the lower base and the machine tool are fixed by a machine tool briquetting mechanism; the workpiece tensioning device is in contact with the inner diameter of the workpiece and is used for fixing the workpiece; the cutter comprises a rough cutter strip, a fine cutter and a fine cutter ring.

Furthermore, the fine cutter cylinder base and the upper end cover of the coarse cutter cylinder are positioned by a positioning key and a positioning pin, so that the position relation between the fine cutter cylinder base and the upper end cover of the coarse cutter cylinder is convenient to adjust.

Furthermore, the upper, middle and lower centering sleeves are connected with the upper end cover, the upper end cover of the thick cutter cylinder and the lower base through screws, so that the coaxiality of the propeller and the small cutter sleeve is ensured when no guide strip is used for guiding in the broaching process.

Furthermore, n guide strips are arranged on the internal spline of the 14 small cutter sleeves in a front-back staggered mode, the propeller is supported on the circumference, and the coaxiality of the propeller and the small cutter sleeves in the broaching process is guaranteed.

Furthermore, on the internal spline of the 14 small tool sleeves, the guide strips are avoided, and n thick tool strips are arranged in a front-back staggered mode, so that the number of the thick tool strips participating in broaching simultaneously is reduced, the broaching force is reduced, and the phenomena of pulling immobility and chip blocking are avoided.

Furthermore, the fine cutter is arranged on a key groove in the inner wall of the fine cutter cylinder cutter sleeve and is connected with the fine cutter ring through a screw, and the fine cutter cylinder cutter sleeve and the fine cutter ring are positioned through a positioning key, so that the position relation of the fine cutter and the fine cutter ring is ensured.

Furthermore, the fine cutter ring is in transition fit with the fine cutter outer cylinder, is positioned by a positioning key, is pressed tightly with the fine cutter cylinder base through the upper end cover and is fixed in the fine cutter outer cylinder.

Compared with the prior art, the beneficial effects are as follows:

1. this application structural design is reasonable, and the processing of external spline and excircle keyway can be accomplished to once broaching, and the workable external spline that has several profile shapes tooth.

2. The thick tool section of this application is crisscross the installation around, has reduced the thick tool section of participating in the broaching simultaneously, has reduced the broaching power, has avoided appearing drawing motionless and card bits phenomenon.

3. This application adopts thick smart split type design, has reduced the overall length of thick sword urceolus, has reduced the manufacturing degree of difficulty, conveniently adjusts the relative position of thick sword strip and smart sword ring, has reduced the adjustment degree of difficulty.

4. This application adopts smart sword ring to draw into external splines, improves size precision and dimensional stability.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the present application;

FIG. 2 is a partial front view of the present application;

fig. 3 is a partial cross-sectional view of the present application.

Fig. 4 is a layout of a coarse blade bar according to the present application.

Fig. 5 is a layout diagram of the fine blade and the fine blade ring according to the present application.

Description of the labeling:

1-positioning plate, 110-positioning pin machine tool; 2-a workpiece tensioning device and 210-a propeller; 3-upper end cover, 310-upper centering sleeve; 4-fine knife outer cylinder, 410-fine knife cylinder positioning long key, 411-knife ring positioning key, 412-fine knife cylinder knife sleeve, 413-fine knife and 414-fine knife ring; 5-a fine knife cylinder base, 510-a positioning pin-a fine knife cylinder base, 511-a positioning key-a fine knife cylinder base; 6-coarse cutter cylinder upper end cover, 610-positioning key-coarse cutter cylinder upper end cover, 611-middle centering sleeve; 7-a coarse cutter outer cylinder, 710-a taper pin, 711-a coarse cutter strip, 712-a guide strip and 713-a small cutter sleeve; 8-lower base, 810-positioning key-lower base and 811-lower centering sleeve; 9-support ring, 910-positioning key-machine tool, 911-support ring inner sleeve.

The specific implementation mode is as follows:

in order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

On the contrary, this application is intended to cover any alternatives, modifications, equivalents, and alternatives that may be included within the spirit and scope of the application as defined by the appended claims. Furthermore, in the following detailed description of the present application, certain specific details are set forth in order to provide a better understanding of the present application. It will be apparent to one skilled in the art that the present application may be practiced without these specific details.

As shown in fig. 1 to 5, in the cylinder type broaching precision tool cylinder of the embodiment of the present application, the outer cylinder 7 of the rough tool is in transition fit with 14 small tool sleeves 713, and is positioned and fixed by 14 taper pins 710; the positioning plate 1 is connected with the upper end cover 3 by a screw; the positioning plate 1 is connected with a positioning pin for a machine tool-the machine tool 110, so that the perpendicularity of the axial direction of the whole knife cylinder and the installation surface of the machine tool at the bottom is ensured; the fine cutter outer cylinder 4 is in transition fit with a fine cutter cylinder cutter sleeve 412, and is positioned by a fine cutter cylinder positioning long key 410 and a cutter ring positioning key 411 which are connected by screws; the fine cutter outer cylinder 4 and the fine cutter cylinder base 5 are positioned by a fine cutter cylinder positioning long key 410 and a cutter ring positioning key 411 and are connected by screws; the fine knife cylinder base 5 and the coarse knife cylinder upper end cover 3 are positioned by a key, the fine knife cylinder base 511 and the positioning pin are positioned by the fine knife cylinder base 510, and the fine knife cylinder base and the coarse knife cylinder upper end cover are connected by screws; the outer thick cutter barrel 7 and the upper thick cutter barrel end cover 6 are positioned by a positioning key-the upper thick cutter barrel end cover 610 and are connected by screws; the outer cylinder 7 of the rough cutter and the lower base 8 are positioned by a key-the lower base 810 is connected by a screw; the upper centering sleeve 310 is connected with the upper end cover 3, the middle centering sleeve 611 is connected with the upper end cover 6 of the rough cutter cylinder, and the lower centering sleeve 811 is connected with the lower base 8 by screws; the inner sleeve 911 of the support ring is concentric with the lower centering sleeve 811, is coaxial with the support ring 9 and is connected with the support ring by screws, so that the coaxiality of the whole broaching device and the support rod of the propeller is ensured; the lower base 8 and the support ring 9 are positioned by a positioning key-machine tool 910 and are connected by screws; the support ring 9 and the machine tool are positioned by a positioning key-machine tool 910, and the lower base 8 and the machine tool are fixed by a machine tool pressing block mechanism; the workpiece tensioning device 2 is in contact with the inner diameter of the workpiece and is used for fixing the workpiece; the cutter comprises a coarse cutter strip 711, a fine cutter 413 and a fine cutter ring 414.

N guide bars 712 are arranged on the internal spline of the 14 small knife sleeve 713 in a staggered manner from front to back, and the propeller 210 is supported on the circumference, so that the coaxiality of the propeller 210 and the small knife sleeve 713 in the broaching process is ensured; on the internal spline of the 14 small cutter sleeve 713, n thick cutter strips 711 are arranged in a staggered manner from front to back, so that the number of the thick cutter strips 711 participating in broaching at the same time is reduced, the broaching force is reduced, and the phenomena of pulling immobility and chip blocking are avoided; the fine cutter 413 is arranged on a key groove in the inner wall of the fine cutter cylinder cutter sleeve 412 and is connected with the fine cutter ring 414 through a screw, and the fine cutter cylinder positioning long key 410 and the cutter ring positioning key 411 are used for positioning, so that the position relation between the fine cutter 413 and the fine cutter ring 414 is ensured; the fine knife ring 414 is in transition fit with the fine knife outer cylinder 4, is positioned by the fine knife cylinder positioning long key 410 and the knife ring positioning key 411, is pressed tightly with the fine knife cylinder base 5 through the upper end cover 3, and is fixed in the fine knife outer cylinder 4.

During broaching, a workpiece is placed on the upper end face of the propeller 210, the workpiece is fixed through the workpiece tensioning device 2, the oil cylinder drives the whole broaching device to do broaching movement from top to bottom, the workpiece is kept still in the broaching movement, and the hydraulic spray head and the whole broaching device are kept relatively static to flush scraps.

When a certain number of workpieces are broached and the whole set of cutters needs to be replaced forcibly or when individual cutters are seriously abraded in the broaching process, the corresponding cutters only need to be replaced, and the broaching can be carried out again.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application is included in the protection scope of the present application.

When a certain number of workpieces are broached and the whole set of cutters needs to be replaced forcibly or when individual cutters are seriously abraded in the broaching process, the corresponding cutters only need to be replaced, and the broaching can be carried out again.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application is included in the protection scope of the present application.