Shaft tube spline forming, rolling and extruding device and system and machining method of shaft tube spline forming, rolling and extruding system

Abstract

The shaft tube spline forming, rolling and extruding device comprises a sliding base, a positioning disc, a pressing and sliding plate and a double-dovetail base, the positioning disc is arranged on the sliding base, a shaft penetrating through hole is formed in the middle of the positioning disc, a cross-shaped sliding groove is formed in the end face of the side, away from the sliding base, of the positioning disc, a step face with a locking hole is arranged on the edge of the sliding groove, and the pressing and sliding plate is arranged on the step face. A bulge matched with the step surface is arranged on the pressure sliding plate; and the pressure sliding plate covers the positioning disc and is locked by a bolt. The piston is adopted to control the double-dovetail base to move in the sliding groove so as to drive the rolling wheels installed on the double-dovetail base to machine the shaft tube, the machining depth and length can be achieved by controlling the double-dovetail base through the piston, rapid spline forming in the length direction of the shaft tube can be achieved in combination with movement on the shaft tube, an outer spline can be formed, and the machining precision can be improved. The internal spline can be formed, the internal spline is also suitable for non-through splines, the integrated body is simple in structure, the cost is lower, the machining and forming effect is better, and the machining cost can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of extrusion forming processing, and more specifically, to a shaft tube spline forming rolling extrusion device, system and processing method thereof. Background Art

[0002] With the rapid development of the automotive industry, spline shafts are widely used in the transmission systems of automobiles. At present, in the field of spline processing, the existing spline processing means mainly include milling and cold extrusion and other methods. However, these traditional processing means have obvious limitations and cannot meet the processing requirements of specific products.

[0003] Milling processing forms a spline structure by removing materials. However, for the products involved in this application, due to the special requirements of their own structures and performances, the material removal method of milling cannot achieve effective processing and it is difficult to meet the accuracy and quality standards required by the products.

[0004] The cold extrusion processing method is also applied to a certain extent in spline processing. However, cold extrusion processing must be effectively operated for through splines and is not applicable to non-through splines. And the products targeted by this application include the case of non-through splines, so the cold extrusion processing means cannot meet its processing requirements either.

[0005] At present, among the equipment that can meet the processing requirements of the products involved in the present invention, the GROB equipment of Switzerland is one of the few feasible options. This equipment can complete the processing of such products. However, the GROB equipment has problems of high input costs and maintenance costs. The equipment procurement cost is as high as 15 million yuan, which is a huge economic burden for many enterprises. In addition, during the daily use and maintenance of the equipment, a large amount of funds also need to be invested in equipment maintenance, repair and spare part replacement, etc., further increasing the operating costs of enterprises.

[0006] Based on the above deficiencies of the prior art, there is an urgent need to invent a spline rolling extrusion equipment, which can form external splines and internal splines by rolling extrusion and is also applicable to non-through splines, so as to reduce the processing economic cost of splines and provide a more efficient and economic solution for the spline processing field. Summary of the Invention

[0007] The present invention provides a shaft tube spline forming rolling extrusion device, system and processing method thereof to solve the problem that the existing equipment cannot be compatible with the processing of external splines and internal splines.

[0008] According to one aspect of the present invention, a shaft tube spline forming and rolling extrusion device is provided, including a slide seat, a positioning plate, a pressure plate and a double dovetail seat, the positioning plate is installed on the slide seat, and a shaft through hole is provided in the middle of the positioning plate, and a cross-shaped slide groove is provided on the end face of the positioning plate away from the slide seat, a step surface with a locking hole is provided on the edge of the slide groove, and a protrusion matching the step surface is provided on the pressure plate; the pressure plate cover is provided on the positioning plate and locked by bolts, the double dovetail seat is slidably installed in the slide groove, a slot hole is provided on the top of the double dovetail seat, and a piston is slidably installed in the slot hole; a roller is installed at the bottom of the double dovetail seat, and a fixing cover is provided at the end of the positioning plate and the pressure plate, and the end of the piston extends outward through the fixing cover.

[0009] Preferably, on the basis of the above scheme, a material return seat is installed on the pressing plate, a material through hole is provided in the middle of the material return seat, and a mounting groove and a material return through hole are respectively provided at the upper and lower parts of the material return seat, a material return piston is installed in the mounting groove, a material return baffle is installed in the material return through hole, and the material return baffle is connected to the material return piston through a guide connecting block.

[0010] Preferably, based on the above solution, an arc groove is provided at the end of the material return baffle.

[0011] The present invention also provides a shaft tube spline forming and rolling system, including a shaft tube spline forming and rolling device as described above, and the system also includes a right guide base, a left guide base, a dividing device and a thrust device installed on a workbench, the right guide base and the left guide base are respectively installed on both sides of the workbench, and a thrust cylinder is installed on the left guide base, the slide is slidably installed in the middle of the workbench, the slide is connected to the right guide base by a pull rod, the dividing device is located on the workbench between the slide and the right guide base, and the thrust device is located between the other left guide base and the slide.

[0012] Preferably, based on the above solution, one side of the thrust device is connected to the telescopic rod of the thrust cylinder, and the other side of the thrust device is equipped with a tip acting on the slide seat.

[0013] Preferably, based on the above scheme, the dividing device includes a movable positioning seat, a motor and a main shaft, the motor is mounted on the movable positioning seat, the output end of the motor is connected to the mold core shaft, the main shaft is equipped with a stripping ring, and the movable positioning seat is provided with a connecting seat, and the connecting seat is connected to the telescopic rod of the thrust cylinder.

[0014] The present invention also provides a processing method of a shaft tube spline forming rolling extrusion system, comprising the following steps:

[0015] Step 1: Load the shaft tube to be processed onto the indexing device, and realize the left and right limit of the shaft tube to be processed on the thrust device and the indexing device through the acting force of the two side thrust cylinders;

[0016] Step 2: Control the movement of the indexing device, adjust the circumferential position of the shaft tube to be processed, control the movement of the piston, and drive the rollers on the double dovetail seat to roll and extrude the shaft tube to be processed;

[0017] Step 3: Control the release of the thrust cylinder, and repeat Step 2 and Step 3 until the processing is completed.

[0018] A shaft tube spline forming rolling and extruding device of the present invention uses a piston to control the movement of a double dovetail seat in a chute to drive the rollers installed on the double dovetail seat to process the shaft tube. The processing depth and length can be realized by controlling the piston to the double dovetail seat. Combining the movement on the shaft tube can realize the rapid forming of splines in the length direction of the shaft tube. It can not only form external splines, but also internal splines, and is also applicable to non-through splines. Its overall structure is simple, the cost is lower, the processing and forming effect is better, and the processing cost can be effectively reduced. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. In the drawings:

[0020] Figure 1 It is a schematic structural diagram of the shaft tube spline forming rolling and extruding system of the present invention;

[0021] Figure 2 It is a bottom view of the shaft tube spline forming rolling and extruding device of the present invention;

[0022] Figure 3 It is a three-dimensional view of the shaft tube spline forming rolling and extruding device of the present invention;

[0023] Figure 4 It is a three-dimensional view of the positioning disk of the present invention;

[0024] Figure 5 It is a front view of the pressure slide plate of the present invention;

[0025] Figure 6 It is a side view of the pressure slide plate of the present invention;

[0026] Figure 7 It is a schematic structural diagram of the non-through spline groove of the shaft tube of the present invention;

[0027] Figure 8Schematic diagram of the through spline groove structure of the shaft tube of the present invention;

[0028] Explanation of the reference numerals in the attached drawings:

[0029] Slide seat 1, positioning disk 11, pressure slide plate 12, double dovetail seat 13, through shaft hole 14, chute 15, step surface 16, locking hole 17, protrusion 18, groove body 181, groove hole 19, piston 101, roller 102, fixed cover 103, blanking seat 104, material passing hole 105, installation groove 106, blanking through hole 107, blanking piston 108, blanking baffle 109, guiding connection block 110, arc groove 112;

[0030] Right guiding base 2;

[0031] Left guiding base 3;

[0032] Indexing device 4, moving positioning seat 41, motor 42, main shaft 43, die core shaft 44, connecting seat 45;

[0033] Thrust device 5, center point 51;

[0034] Workbench 6, thrust cylinder 61, pull rod 62;

[0035] Shaft tube to be machined 7, through spline groove 71; non-through spline groove 72. Specific implementation manners

[0036] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0037] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or groups.

[0038] To make the drawings concise, only the parts related to the present invention are schematically shown in each drawing, and they do not represent their actual structures as products. In addition, to make the drawings concise and easy to understand, in some drawings, parts with the same structure or function are only schematically shown one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also can mean the situation of "more than one".

[0039] It should also be further understood that the term "and / or" used in the specification and appended claims of this application refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0040] In the embodiments shown in the drawings, the indication of directions (such as up, down, left, right, front and back) is used to explain that the structures and movements of various components of the present invention are not absolute but relative. When these components are in the positions shown in the drawings, these descriptions are appropriate. If the descriptions of the positions of these components change, the indication of these directions also changes accordingly.

[0041] In addition, in the description of the present application, the terms "first", "second", etc. are only used for differential description and cannot be understood as indicating or implying relative importance.

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific embodiments of the present invention will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings and other embodiments can be obtained.

[0043] Please refer to Figure 1 and in combination with Figure 2 , Figure 3 and Figure 4 shown, a spline forming rolling extrusion device for a shaft tube of the present invention includes a slide base 1, a positioning disk 11, a pressing slide plate 12 and a double dovetail seat 13. Among them, the positioning disk 11 is installed on the slide base 1, and a through hole 14 for the shaft is provided in the middle of the positioning disk 11. A cross-shaped chute 15 is provided on the end face of the positioning disk 11 facing away from the slide base 1. A stepped surface 16 with a locking hole 17 is provided at the edge of the chute 15, and a protrusion 18 adapted to the stepped surface 16 is provided on the pressing slide plate 12. Four pressing slide plates 12 are respectively covered on the chute 15 and locked by bolts passing through the locking holes 17.

[0044] Among them, the double dovetail seat 13 is slidably installed in the chute 15. A slot hole 19 is provided at the top of the double dovetail seat 13, and a piston 101 is slidably installed in the slot hole 19 and sealed by a plug; the bottom of the double dovetail seat 13 is installed with a roller 102 through a mounting shaft, and a fixed cover 103 is installed at the ends of the positioning disk 11 and the pressing slide plate 12. The end of the piston 101 extends outward through the fixed cover 103.

[0045] As Figure 2 shown, dovetail grooves are respectively provided at the four corners of the double dovetail seat 13 of the present invention, and the inner sides of the protrusions 18 form a groove body 181 adapted to the dovetail grooves with each other. When the piston 101 moves, when driving the double dovetail seat 13 to move in the chute 15, the interaction between the dovetail grooves and the groove body can be used to improve the stability of its movement. For the specific structure, please refer to Figure 5 and Figure 6 shown.

[0046] During operation, the shaft tube 7 to be processed is inserted into the through-hole 14 for shaft insertion. The control piston 101 drives the double dovetail seat 13 to move in the sliding groove 15, and the rollers 102 on the double dovetail seat 13 act on the surface of the shaft tube 7 to be processed, controlling the movement of the shaft tube 7 to be processed in its length direction, thereby completing the spline rolling forming on the shaft tube 7 to be processed.

[0047] To facilitate the feeding-back of the shaft to be processed, a feeding-back seat 104 is installed on the pressing slide plate 12 of the present invention. A material-passing hole 105 is provided in the middle of the feeding-back seat 104, and installation grooves 106 and feeding-back through-holes 107 are respectively provided in the upper and lower parts of the feeding-back seat 104. A feeding-back piston 108 is installed in the installation groove 106, a feeding-back baffle 109 is installed in the feeding-back through-hole 107, the feeding-back baffle 109 is connected to the feeding-back piston 108 through a guiding connection block 110, and an arc-shaped groove 112 is provided at the end of the feeding-back baffle 109.

[0048] During the extrusion forming, the present invention can control the feeding-back piston 108 to drive the feeding-back baffle 109 to press tightly on the shaft to be processed, realizing the clamping of the shaft to be processed and ensuring the stability of the shaft to be processed during machining. At the same time, after the machining is completed, the feeding-back piston 108 can be controlled to drive the feeding-back baffle 109 to relatively loosen, realizing the loosening of the shaft to be processed and facilitating the feeding-back.

[0049] During the machining process, the control piston 101 drives the double dovetail seat 13 to move in the sliding groove 15, and the rollers 102 on the double dovetail seat 13 act on the surface of the shaft tube 7 to be processed, so that a through spline groove 71 can be formed on the surface of the shaft tube 7 as Figure 8 shown, or a non-through spline groove 72 can be formed on the surface of the shaft tube 7 as Figure 7 shown

[0050] The present invention also provides a shaft tube spline forming rolling extrusion system, including a shaft tube spline forming rolling extrusion device as described above. Moreover, this system further includes a right guiding base 2, a left guiding base 3, a indexing device 4, and a thrust device 5 installed on a workbench 6. Among them, the right guiding base 2 and the left guiding base 3 are respectively installed on both sides of the workbench 6, and a thrust cylinder 61 is installed on the left guiding base 3. The sliding seat 1 is slidably installed in the middle of the workbench 6, and the sliding seat 1 is connected to the right guiding base 2 through a pull rod 62. The indexing device 4 is on the workbench between the sliding seat 1 and the right guiding base 2, and the thrust device 5 is between the other left guiding base 3 and the sliding seat 1.

[0051] Among them, a guide rail is provided on the workbench 6. The right guiding base 2 and the left guiding base 3 of the present invention are fixed on both sides of the workbench 6, while the indexing device 4, the thrust device 5, and the sliding seat 1 can all slide on this guide rail. One side of the thrust device 5 is connected to the telescopic rod of the thrust cylinder 61, and a center point 51 acting on the sliding seat 1 is installed on the other side of the thrust device 5.

[0052] Please continue to refer to Figure 4 As shown, the indexing device 4 of the present invention includes a moving positioning seat 41, a motor 42 and a main shaft 43. The motor 42 is installed on the moving positioning seat 41. The output end of the motor 42 is connected to a mold mandrel 44. A blanking ring is installed on the main shaft 43. And a connecting seat 45 is provided on the moving positioning seat 41. The connecting seat 45 is connected to the telescopic rod of the thrust cylinder 61. That is to say, by controlling the rotation angle of the motor 42, the angle of the shaft to be processed installed on the mold mandrel 44 can be changed, so as to realize the spline forming of the shaft to be processed at various angles.

[0053] For the shaft tube spline forming rolling extrusion system of the present invention, during use, the shaft tube to be processed is installed on the indexing device 4. By using the force of the thrust cylinder 61 on the indexing device 4, the shaft to be processed is pushed through the shaft through hole 14. By controlling the movement of the left guiding base 3, the tip 51 of the driving pusher is driven to limit the end of the shaft to be processed. Then, by controlling the retracting baffle 109 to move towards each other to clamp it, the driving piston 101 drives to move in the chute 15, so as to drive the rollers 102 on the double dovetail seat 13 to act on the shaft tube to be processed, realizing the rolling extrusion forming of the shaft tube spline; then controlling the retracting baffle 109 to move away from each other to loosen it, and then through the movement of the motor 42 on the indexing device 4, the shaft tube to be processed is driven to rotate. When it rotates to the set position, controlling the retracting baffle 109 to move towards each other to clamp it, the driving piston 101 drives to move in the chute 15, so as to drive the rollers 102 on the double dovetail seat 13 to act on the shaft tube to be processed, realizing the rolling extrusion forming of the shaft tube spline. Repeating like this, the spline processing and forming of the entire shaft tube to be processed can be completed.

[0054] The present invention also provides a processing method for a shaft tube spline forming rolling extrusion system, including the following steps:

[0055] Step 1, loading the shaft tube to be processed onto the indexing device 4, and realizing the left and right limits of the shaft tube 7 to be processed through the acting forces of the two side thrust cylinders 61 on the thrust device 5 and the indexing device 4;

[0056] Step 2, controlling the movement of the indexing device 4, adjusting the circumferential position of the shaft tube to be processed 7, and controlling the movement of the piston 101 to drive the rollers 102 on the double dovetail seat 13 to perform rolling extrusion forming on the shaft tube to be processed 7;

[0057] Step 3, controlling the thrust cylinder 61 to loosen, and repeating Step 2 and Step 3 until the processing is completed.

[0058] A spline forming rolling and extruding device for a shaft tube according to the present invention uses a piston to control the movement of a double dovetail seat in a chute to drive the rollers mounted on the double dovetail seat to process the shaft tube 7. The processing depth and length can be achieved by controlling the double dovetail seat with the piston value. Combining the movement on the shaft tube 7 can realize the rapid forming of splines in the length direction of the shaft tube 7. It can not only form external splines, but also internal splines, and is also applicable to non-through splines. Its overall structure is simple, the cost is lower, the processing and forming effect is better, and the processing cost can be effectively reduced.

[0059] Finally, the method of the present application is only a preferred implementation, and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A shaft tube spline forming rolling extrusion device, characterized in that, The invention comprises a slide seat, a positioning plate, a pressure plate and a double dovetail seat, the positioning plate being mounted on the slide seat, and a shaft through hole being arranged in the middle of the positioning plate, and a cross-shaped slide groove being arranged on the end face of the positioning plate away from the slide seat, a step surface with a locking hole being arranged on the edge of the slide groove, and a protrusion matching the step surface being arranged on the pressure plate; the pressure plate cover is arranged on the positioning plate and locked by bolts, the double dovetail seat is slidably mounted in the slide groove, a slot hole is arranged on the top of the double dovetail seat, and a piston is slidably mounted in the slot hole; a roller is arranged at the bottom of the double dovetail seat, and a fixing cover is arranged at the end of the positioning plate and the pressure plate, and the end of the piston extends outward through the fixing cover.

2. The spline forming rolling extrusion device for a shaft tube according to claim 1, characterized in that, A material withdrawal seat is arranged on the press plate, a material penetration hole is arranged in the middle of the material withdrawal seat, and a mounting groove and a material withdrawal through hole are arranged at the upper and lower parts of the material withdrawal seat respectively, a material withdrawal piston is arranged in the mounting groove, a material withdrawal baffle is arranged in the material withdrawal through hole, and the material withdrawal baffle is connected to the material withdrawal piston through a guide connecting block.

3. The spline forming rolling extrusion device for a shaft tube according to claim 2, characterized in that, An arc groove is arranged at the end of the material-returning baffle.

4. A shaft tube spline forming rolling extrusion system, characterized in that, It includes a shaft tube spline forming and rolling extrusion device as described in claim 1, and the system also includes a right guide base, a left guide base, a dividing device and a thrust device installed on a workbench, the right guide base and the left guide base are respectively installed on both sides of the workbench, and a thrust cylinder is installed on the left guide base, the slide is slidably installed in the middle of the workbench, the slide is connected to the right guide base by a pull rod, the dividing device is on the workbench between the slide and the right guide base, and the thrust device is between the other left guide base and the slide.

5. The spline forming rolling extrusion system for a shaft tube according to claim 4, characterized in that, One side of the thrust device is connected to the telescopic rod of the thrust cylinder, and the other side of the thrust device is provided with a top acting on the slide seat.

6. The spline forming rolling extrusion system of a shaft tube according to claim 4, characterized in that The indexing device includes a movable positioning seat, a motor and a main shaft. The motor is installed on the movable positioning seat. The output end of the motor is connected to the mold core shaft. The main shaft is equipped with a stripping ring, and the movable positioning seat is provided with a connecting seat, which is connected to the telescopic rod of the thrust cylinder.

7. A processing method of a shaft tube spline forming rolling and extruding system, characterized in that, The following steps are involved: Step 1, the shaft tube to be processed is loaded onto the mold core shaft of the indexing device, and the left and right limit of the shaft tube to be processed is achieved on the thrust device and the indexing device through the force of the thrust cylinders on both sides; Step 2, controlling the movement of the indexing device, adjusting the circumferential position of the shaft tube to be processed, controlling the movement of the piston, and driving the rollers on the double dovetail seats to roll-form the shaft tube to be processed; Step 3, control the thrust cylinder to release, and repeat steps 2 and 3 until the processing is completed.

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