阅读说明：本技术 一种花键轴铣床的主轴法兰延伸装置 (Main shaft flange extension device of spline shaft milling machine ) 是由 罗军 叶作贵 宋德忠 肖玉斌 刘枢 陈灌生 袁剑平 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种花键轴铣床的主轴法兰延伸装置,涉及机械加工技术领域,解决现有普通花键轴铣床走刀架行程受限的技术问题,包括加长法兰、锁紧螺钉、专用顶尖、锁紧螺母,所述专用顶尖一端插入加长法兰并用锁紧螺钉固定连接,另一端与锁紧螺母螺纹连接；本发明只需要安装于普通花键轴铣床原法兰盘位置,即可对轴类工件进行全长外花键加工,解决了由于普通花键轴铣床走刀架行程受限问题,使用十分方便,可对花键轴铣床设备加工类似的工件进行推广使用。(The invention discloses a spindle flange extending device of a spline shaft milling machine, which relates to the technical field of machining and solves the technical problem that the travel of a tool carrier of the existing common spline shaft milling machine is limited; the invention can process the full-length external spline of the shaft workpiece only by installing the milling machine at the original flange position of the common spline shaft, solves the problem of limited travel of the tool carrier of the common spline shaft milling machine, is very convenient to use, and can be popularized and used for processing similar workpieces by spline shaft milling machine equipment.)

1. A spindle flange extending device of a spline shaft milling machine comprises a lengthened flange (1), a locking screw (2), a special center (3) and a locking nut (4), and is characterized in that one end of the special center (3) is inserted into the lengthened flange (1) and fixedly connected with the locking screw (2), and the other end of the special center is in threaded connection with the locking nut (4).

2. The spindle flange extending device of the spline shaft milling machine according to claim 1, wherein the lengthened flange (1) is provided with a positioning hole (10) in the middle at one end, a screw hole (6) in the periphery and a taper hole (7) in the middle at the other end, and the large end of the taper hole (7) is provided with a threaded through hole (8) perpendicular to the axis of the taper hole (7).

3. The spindle flange extension device of the spline shaft milling machine according to claim 2, characterized in that the taper hole (7) corresponds to a special tip (3), and the special tip (3) adopts a Morse 5-type tip.

4. The spindle flange extending device of the spline shaft milling machine according to claim 2, wherein the special center (3) comprises a morse center main body (31), a positioning groove (32), a nut screwing threaded section (33), a center threaded end (34) and a standard morse 5-degree taper shank (35), one end of the morse center main body (31) is the standard morse 5-degree taper shank (35), the other end of the morse center main body is provided with a 60-degree taper table, the front end of the taper table is provided with the center threaded end (34), the rear end of the taper table is provided with the nut screwing threaded section (33), the rear side of the nut screwing threaded section (33) is provided with the positioning groove (32), and the positioning groove (32) corresponds to the position of the threaded through hole (8) after installation.

5. A spindle flange extension arrangement for a spline shaft milling machine according to claim 4 characterised in that the point threaded end (34) is provided as an external thread having a pitch diameter which is reduced by 0.2mm from the national standard pitch diameter.

6. A spindle flange extension device for a spline shaft milling machine according to claim 2, characterized in that at least 3 screw holes (6) are provided.

7. A spindle flange extension device for a spline shaft milling machine according to claim 4, characterized in that the lock nut (4) is provided with a left-hand internal thread for use in cooperation with a left-hand external thread of the nut screwing thread section (33).

8. The spindle flange extension device of a spline shaft milling machine according to claim 2, characterized in that the positioning hole (10) at one end of the lengthened flange (1) is positioned through a step of a machine tool spindle turntable and is connected with the equipment spindle turntable by using a screw.

9. A spindle flange extension device for a spline shaft milling machine according to claim 2, characterized in that the length of the extension flange (1) is dimensioned to be greater than the limited length of the travel of the tool of the equipment carriage.

Technical Field

The invention relates to the technical field of machining, in particular to the technical field of a spindle flange extending device of a spline shaft milling machine.

Background

At present, methods such as customizing a special lengthened tip or increasing the clamping size of a workpiece process are generally adopted for processing the full-length external spline of a shaft workpiece in China, so that the problem that the workpiece can only bear smaller milling force during processing is solved, the problem of insufficient rigidity in the processing process is generally existed, and the problem of product clamping is not solved by other methods; the technical improvement is carried out on the premise that the equipment production is limited by inventing the problems existing in spline batch product processing by a person skilled in the art.

Disclosure of Invention

The invention aims to: in order to solve the technical problem, the invention provides a spindle flange extending device of a spline shaft milling machine.

The technical scheme adopted by the invention is as follows: a spindle flange extending device of a spline shaft milling machine comprises a lengthened flange, a locking screw, a special center and a locking nut, wherein one end of the special center is inserted into the lengthened flange and fixedly connected with the lengthened flange through the locking screw, and the other end of the special center is in threaded connection with the locking nut; the locking screw presses a side plane of the special center to ensure the reliable positioning of the center in the circumferential direction.

A positioning hole is formed in the middle of one end of the lengthened flange, a screw hole is formed in the periphery of the lengthened flange, a taper hole is formed in the middle of the other end of the lengthened flange, and a threaded through hole perpendicular to the axis of the taper hole is formed in the large end of the taper hole; the taper hole axis of the taper hole coincides with the rotation axis of the main shaft of the equipment, the threaded through hole is an M12 threaded hole and is used for installing a locking screw, and the locking screw is used for fastening a special center in the lengthened flange so as to ensure that the special center does not rotate relatively in the circumferential direction when the special center is stressed in the lengthened flange.

The taper hole corresponds to a special tip, and the special tip adopts a Morse No. 5 tip.

The special centre comprises a Morse centre main body, a positioning groove, a nut screwing threaded section, a centre threaded end and a standard Morse 5 taper shank, one end of the Morse centre main body is the standard Morse 5 taper shank, the other end of the Morse centre main body is provided with a 60-degree frustum, the front end of the frustum is provided with the centre threaded end, the rear end of the frustum is provided with the nut screwing threaded section, the rear side of the nut screwing threaded section is provided with the positioning groove, the positioning groove corresponds to the position of a threaded through hole after being installed, the 60-degree frustum is used for positioning an inner conical surface of a workpiece, the distance between the standard Morse 5 taper shank and the middle part of the 60-degree taper angle is lengthened, and tool interference in the spline milling process is avoided.

The center threaded end is provided with an external thread, and the pitch diameter of the external thread is reduced by 0.2mm compared with the national standard pitch diameter, so that the conical surface positioning precision is not influenced when the center threaded end is screwed with the internal thread of the workpiece.

The screw hole is provided with 3 at least, facilitates the use screw and is connected with equipment main shaft carousel.

The locking nut is arranged into a left-hand internal thread and is matched with a left-hand external thread of a screwing thread section of the nut for use; after the workpiece is screwed and correctly installed on the special center, the locking nut is screwed tightly and is attached to the left end face of the workpiece; when the workpiece is subjected to a clockwise cutting force, the internal thread on the workpiece is further screwed with the tip threaded end (M20X1.5 right-hand thread) on the special tip, so that the workpiece can move leftwards along the axis; meanwhile, the locknut (M45X1.5 left-handed threaded nut) has the possibility of moving rightwards, and the two threads enable the moving change directions of the workpieces to be opposite and keep balance, so that the position of the workpieces is ensured not to change.

And a positioning hole at one end of the lengthened flange is positioned through a step of the machine tool spindle turntable and is connected with the equipment spindle turntable by using a screw.

The length design size of the lengthened flange is larger than the limited length of the travel of the tool of the equipment carriage.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. only need install main shaft flange extension device on ordinary spline shaft milling machine, can solve because the ordinary spline shaft milling machine tool carrier stroke is limited problem, need not additionally to purchase professional equipment or increase unnecessary processing technology size.

2. The tip structure size of the spindle flange extending device of the spline shaft milling machine can be designed according to the characteristics of workpieces, the integral structure is simple, and the replacement is convenient and quick.

3. According to the spindle flange extending device of the spline shaft milling machine, the thread connection designed on the special tip realizes the function of a universal shifting fork.

4. When the product is installed, the product can be processed only by screwing the product into the special center and then screwing the locking nut in the opposite direction, so that the barrier-free processing of the external spline is ensured, and the spline shaft is reliably positioned.

5. The spindle flange extending device of the spline shaft milling machine designed by the invention shortens the process size of a workpiece, and has strong rigidity and stable and reliable quality in the processing process of the workpiece.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of the structure of the processing state of the present invention;

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

FIG. 3 is a schematic view of the lock nut of the present invention;

FIG. 4 is a schematic view of a half-section of the lock nut of the present invention;

labeled as: 1-lengthened flange, 2-locking screw, 3-special tip, 4-locking nut, 5-product part, 6-screw hole, 7-taper hole, 8-thread through hole, 9-spline hob, 10-positioning hole, 31-Morse tip main body, 32-positioning groove, 33-nut screwing thread section, 34-tip thread end and 35-standard Morse No. 5 taper shank.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1-4, a spindle flange extension device of a spline shaft milling machine comprises a lengthened flange 1, a locking screw 2, a special center 3 and a locking nut 4, wherein one end of the special center 3 is inserted into the lengthened flange 1 and fixedly connected with the locking screw 2, and the other end of the special center is in threaded connection with the locking nut 4; the locking screw 2 compresses a side plane of the special center 3, so that the reliable positioning of the center in the circumferential direction is ensured.

The working principle of the invention is as follows: the milling device comprises a lengthened flange 1, a special center 3, a locking nut 4 and a locking screw 2, wherein the lengthened flange 1 drives the special center 3 to rotate through the rotation of an equipment main shaft in the milling process; the special center 3 is used for positioning a workpiece and transmitting the rotary motion of equipment to the workpiece, the locking nut 4 is used for fastening the workpiece in the milling process to enable the position of the workpiece to be stable and reliable, the locking screw 2 is used for fastening the special center 3 in the milling process to enable the special center to move stably, when the special center 3 is used, firstly, a shifting fork device of an original spline shaft milling machine is disassembled, the lengthened flange 1 is installed, the special center 3 is inserted into the taper hole 7 according to the originally designed position, the bottom plane of the positioning groove 32 of the special center 3 is pressed tightly by using the fastening screw, the workpiece is screwed into the center threaded end 34 of the special center 3, the other end of the workpiece is fixed by using the tailstock of the machine tool, then, the locking nut 4 on the nut screwing threaded section 33 is screwed to the workpiece, and the full-length spline of the workpiece can be milled; according to the requirements, the special center 3 can be adjusted and replaced at any time, the relative position of the positioning and screwing device and the workpiece is changed, and milling spline machining of different parts is completed; the problem of because ordinary integral key shaft milling machine tool carrier stroke is limited is solved, it is very convenient to use, can popularize and use spline shaft milling machine equipment processing similar work piece.

Example 2

On the basis of the embodiment 1, a positioning hole 10 is formed in the middle of one end of the lengthened flange 1, a screw hole 6 is formed in the periphery of the lengthened flange, a taper hole 7 is formed in the middle of the other end of the lengthened flange, and a threaded through hole 8 perpendicular to the axis of the taper hole 7 is formed at a position which is 30-50mm away from the plane of the large end of the taper hole 7; the axis of a taper hole 7 of the taper hole 7 coincides with the rotation axis of the main shaft of the equipment, the threaded through hole 8 is an M12 threaded hole and is used for installing a locking screw 2, and the locking screw 2 is used for fastening a special center 3 in the lengthened flange 1 so as to ensure that the special center 3 does not rotate relatively in the circumferential direction when stressed in the shifting fork disc.

Example 3

On the basis of the embodiment 2, the taper hole 7 corresponds to the special tip 3, and the special tip 3 adopts a Morse No. 5 tip.

Example 4

On the basis of the embodiment 2, the special centre 3 comprises a morse centre main body 31, a positioning groove 32, a nut screwing threaded section 33, a centre threaded end 34 and a standard morse 5-degree taper shank 35, one end of the morse centre main body 31 is the standard morse 5-degree taper shank 35, the other end of the morse centre main body is provided with a 60-degree taper table, the front end of the taper table is provided with the centre threaded end 34, the rear end of the taper table is provided with the nut screwing threaded section 33, the rear side of the nut screwing threaded section 33 is provided with the positioning groove 32, the positioning groove 32 corresponds to the position of the threaded through hole 8 after being installed, the 60-degree taper table is used for positioning the inner conical surface of a workpiece, the distance between the standard morse 5-degree taper shank 35 and the middle part of the 60-degree taper table is lengthened, and tool interference in the spline milling process is avoided.

Example 5

On the basis of the embodiment 2, the tip threaded end 34 is provided with an external thread, and the pitch diameter of the external thread is reduced by 0.2mm compared with the national standard pitch diameter, so that the conical surface positioning precision is not influenced when the tip threaded end is screwed with the internal thread of the workpiece.

Example 6

On the basis of embodiment 2, screw 6 is provided with 3 at least, facilitates the use screw and is connected with equipment main shaft carousel.

Example 7

On the basis of the embodiment 4, the locking nut 4 is arranged into a left-hand internal thread and is matched with the left-hand external thread of the nut screwing thread section 33 for use; after the workpiece is screwed and installed on the special center 3, the locking nut 4 is screwed tightly and is attached to the left end face of the workpiece; when the workpiece is subjected to a clockwise cutting force, the internal threads on the workpiece are further screwed with the tip threaded end 34(M20X1.5 right-hand threads) on the special tip 3, so that the workpiece can move leftwards along the axis; meanwhile, the locknut 4(M45X1.5 left-handed threaded nut) has the possibility of moving rightwards, and the two threads enable the moving directions of the workpiece to be opposite and keep balance, so that the position of the workpiece is ensured not to be changed.

Example 8

On the basis of the embodiment 2, the positioning hole 10 at one end of the lengthened flange 1 is positioned through a step of a machine tool spindle turntable and is connected with the equipment spindle turntable by using a screw.

Example 9

On the basis of embodiment 2, the length design size of the lengthened flange 1 is larger than the limited length of the travel of the tool carriage of the equipment.