Cold extrusion forming device for spline of output shaft

Abstract

The utility model provides an output shaft spline cold extrusion forming device, and relates to the technical field of extrusion equipment.The output shaft spline cold extrusion forming device comprises a workbench, symmetrically-distributed supporting legs are fixedly installed on the two sides of the bottom of the workbench correspondingly, a fixing frame is fixedly installed on the supporting legs, and a machining groove is formed in the top of the workbench; and an extrusion assembly is arranged at the top of the workbench, and a controller is fixedly installed on one side of the front face of the workbench. The first electric telescopic rod and the spring cooperatively control insertion and extraction of the insertion plate, and rapid and accurate unlocking and multi-gear mechanical locking of the position of the movable column are achieved; and a second electric telescopic rod drives a movable column to adjust the height, so that the depth adjusting process of the machining groove is completely mechanized, and operation is convenient and efficient. And the working load during extrusion forming is directly transmitted to the working table main body structure for bearing through rigid engagement of the insertion plate and the limiting groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to extrusion equipment technical field, specifically, relate to a kind of output shaft spline cold extrusion forming device. BACKGROUND

[0002] In mechanical transmission system, output shaft is a kind of key components, its end often needs to be processed spline structure, to realize reliable torque transmission with gear, coupling and other components. The machining quality of spline is directly related to the carrying capacity of the whole transmission system, motion accuracy and service life.

[0003] For example: the high-precision extrusion device for flange bolt machining disclosed in Chinese utility model patent (publication number: CN218134103U) discloses that a fixed plate is arranged at one end of the driving shaft, fixed blocks are arranged at both ends of the fixed plate, a stabilizing plate is arranged on one side of the outer wall of the fixed block, rollers are arranged inside the sliding groove, sliding sleeves and cleaning plates are arranged at both ends of the sliding rod, and springs are arranged between the sliding rod and the sliding sleeve, so that the sliding rod can return to the initial position. In the utility model, when the head of the flange bolt at one end is subjected to cold extrusion treatment, the burrs on the hexagonal head formed at one end of the flange bolt can be cleaned in real time, so that the extrusion machining precision of the flange bolt is improved.

[0004] For the related technology in the above, the device has some deficiencies. In actual use, the manually adjustable support block set to adapt to different lengths of workpieces is fixed by a threaded rod, but the operation process is complicated, the efficiency is low, and the convenience is insufficient. More importantly, in the workpiece extrusion process, the main load borne by the support block will be directly transmitted to the meshing part of the threaded rod end and the clamping groove. This forms a concentrated stress point. Under long-term alternating load conditions, plastic deformation, wear and even thread slipping may occur in the threaded connection part, or the clamping groove may be deformed, thereby causing connection loosening, positioning misalignment or locking failure, which seriously affects the long-term working stability and reliability of the equipment.

[0005] Therefore, we improve it and propose an output shaft spline cold extrusion forming device. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies of the prior art, the utility model provides an output shaft spline cold extrusion forming device to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the utility model provides the following technical scheme:

[0008] The utility model provides an output shaft spline cold extrusion forming device, it includes the workbench, the both sides of workbench bottom are fixedly installed with the support leg of symmetrical distribution, the support leg is fixedly installed with the fixed frame, the top of workbench is equipped with the processing groove, the top of workbench is provided with extrusion subassembly, the side of workbench front is fixedly installed with the controller,

[0009] The bottom of the workbench is provided with a bottom groove, the top of the inner wall of the bottom groove is slidably connected with a movable column, the top end of the movable column extends into the inside of the processing groove, the top of the fixed frame is fixedly connected with a second electric telescopic rod, the driving end of the second electric telescopic rod is fixedly connected with the bottom end of the movable column, and the front of the workbench is provided with a limiting assembly.

[0010] As a preferred technical solution of the present application, the limiting assembly includes a plugboard slidably connected below the front of the workbench, the rear end of the plugboard extends below the inside of the processing groove, the front end of the plugboard is fixedly connected with a baffle, the back of the baffle is fixedly connected with a spring on one side between the front of the workbench, the rear of the front of the workbench on the other side of the back of the baffle is fixedly connected with a first electric telescopic rod, a plurality of limiting grooves are equidistantly formed on the outer wall of the movable column, and the plugboard is slidably connected with the limiting grooves.

[0011] As a preferred technical solution of the present application, the inside of the workbench is provided with an inner cavity, the processing groove penetrates the inside of the inner cavity, a bidirectional screw rod is rotatably connected at the rear of the inside of the inner cavity, a plurality of adjusting blocks are symmetrically sleeved on the outer wall of the bidirectional screw rod, the adjusting blocks are slidably connected with the inner cavity, clamps are fixedly connected on the opposite sides of the two adjusting blocks, the positions of the clamps correspond to the processing groove, and a driving assembly is arranged on one side of the outer surface of the workbench.

[0012] As a preferred technical solution of the present application, the driving assembly includes a servo motor fixedly connected on one side of the outer surface of the workbench, the driving end of the servo motor penetrates the workbench and extends into the inside of the inner cavity, and the driving end of the servo motor is fixedly connected with one end of the bidirectional screw rod.

[0013] As a preferred technical solution of the present application, the outer wall of the bidirectional screw rod is provided with symmetrically distributed left-handed threads and right-handed threads, a threaded hole is formed on the adjusting block and matched with the bidirectional screw rod, and the adjusting block is threadedly connected with the bidirectional screw rod through the threaded hole.

[0014] As a preferred technical solution of the present application, the extrusion assembly includes an extrusion frame fixedly connected to the top of the workbench, a hydraulic telescopic rod is fixedly connected to the top of the extrusion frame, the driving end of the hydraulic telescopic rod penetrates the extrusion frame and extends above the top of the workbench, and an extrusion block is fixedly connected to the driving end of the hydraulic telescopic rod.

[0015] The lower part of the front of the workbench is provided with a sliding hole matched with the plug-in plate.

[0016] According to the preferred technical scheme of the application, the opposite surfaces of the two clamps are attached with anti-skid pads.

[0017] Compared with the prior art, the application has the following beneficial effects:

[0018] In the scheme of the application:

[0019] 1. Through the cooperation of the workbench, the machining groove, the controller, the limiting assembly, the fixing frame, the supporting leg, the extrusion frame, the hydraulic telescopic rod, the extrusion block, the bottom groove, the movable column, the plug-in plate, the first electric telescopic rod, the baffle, the spring, the limiting groove and the second electric telescopic rod, the plugging and unplugging of the plug-in plate is controlled by the first electric telescopic rod and the spring, the position of the movable column is quickly and accurately unlocked and mechanically locked in multiple gears, the height of the movable column is adjusted by the second electric telescopic rod, the depth adjustment process of the machining groove is completely mechanized, and the operation is convenient and efficient. The working load during extrusion forming is directly transmitted to the main structure of the workbench through the rigid engagement of the plug-in plate and the limiting groove, rather than being borne by the second electric telescopic rod, thereby greatly improving the rigidity and stability of the system under load, significantly reducing the load and wear of the key moving parts, and ensuring the reliability and durability of long-term operation of the equipment.

[0020] 2. Through the cooperation of the inner cavity, the clamp, the adjusting block, the servo motor and the bidirectional screw rod, the bidirectional screw rod is driven by the servo motor, the synchronous reverse transmission of the left and right screw threads is utilized, the sliding guide of the adjusting block and the inner cavity is combined, and high-precision and stable synchronous centering movement of the two clamps is realized. The workpiece can be quickly and reliably clamped and fixed in the machining groove, the displacement or vibration of the workpiece during the subsequent extrusion forming process is effectively eliminated, and the dynamic stability of the machining process and the dimensional accuracy of the finally formed workpiece are significantly ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A perspective structural schematic view of an output shaft spline cold extrusion forming device is provided in the application;

[0022] Figure 2 A bottom view structural schematic view of an output shaft spline cold extrusion forming device is provided in the application;

[0023] Figure 3 A sectional view structural schematic view of an output shaft spline cold extrusion forming device is provided in the application;

[0024] Figure 4 A structural schematic view of a limiting assembly in an output shaft spline cold extrusion forming device is provided in the application;

[0025] Figure 5 A schematic view of a connection structure between the movable column and the second electric telescopic rod in an output shaft spline cold extrusion forming device provided in the application is shown.

[0026] Indicated in the figure are:

[0027] 1, workbench; 2, processing groove; 3, controller; 4, limiting assembly; 5, fixed frame; 6, supporting leg; 7, extrusion frame; 8, hydraulic telescopic rod; 9, extrusion block; 10, bottom groove; 11, inner cavity; 12, clamp; 13, adjusting block; 14, servo motor; 15, bidirectional screw; 16, movable column; 17, plugboard; 18, first electric telescopic rod; 19, baffle; 20, spring; 21, limiting groove; 22, second electric telescopic rod. DETAILED DESCRIPTION

[0028] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0029] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0030] It should be noted that the embodiments in the present application and the features and technical schemes in the embodiments can be combined with each other without conflict.

[0031] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0032] Embodiment 1

[0033] Please refer to Figures 1-5 An output shaft spline cold extrusion forming device, which comprises a workbench 1, symmetrical supporting legs 6 are fixedly installed on both sides of the bottom of the workbench 1, fixed frames 5 are fixedly installed on the supporting legs 6, a processing groove 2 is formed on the top of the workbench 1, an extrusion assembly is arranged on the top of the workbench 1, and a controller 3 is fixedly installed on one side of the front of the workbench 1.

[0034] The bottom of the workbench 1 is provided with a bottom groove 10, the top of the inner wall of the bottom groove 10 is slidably connected with a movable column 16, the top end of the movable column 16 extends into the machining groove 2, the top of the fixing frame 5 is fixedly connected with a second electric telescopic rod 22, the driving end of the second electric telescopic rod 22 is fixedly connected with the bottom end of the movable column 16, and the front surface of the workbench 1 is provided with a limiting assembly 4.

[0035] Further, the limiting assembly 4 comprises a plug plate 17 slidably connected to the front surface of the workbench 1 below, the rear end of the plug plate 17 extends below the inside of the machining groove 2, the front end of the plug plate 17 is fixedly connected with a baffle 19, the back surface of the baffle 19 is fixedly connected with a spring 20 between the front surface of the workbench 1, the front surface of the workbench 1 is fixedly connected with a first electric telescopic rod 18 behind the other side of the back surface of the baffle 19, and a plurality of limiting grooves 21 are equidistantly arranged on the outer wall of the movable column 16 and slidably connected with the plug plate 17. The movable column 16 is mechanically locked at different heights in the machining groove 2; the first electric telescopic rod 18 and the spring 20 cooperatively provide unlocking driving force and automatic reset locking force respectively, so that the reliable plug-in operation is ensured; the huge vertical load borne by the movable column 16 during extrusion is directly transmitted to the main structure of the workbench 1 by the plug plate 17, instead of being borne by the second electric telescopic rod 22, so that the structural rigidity and operation stability of the system under long-term high-load working conditions are significantly improved.

[0036] Further, the extrusion assembly comprises an extrusion frame 7 fixedly connected to the top of the workbench 1, the top of the extrusion frame 7 is fixedly connected with a hydraulic telescopic rod 8, the driving end of the hydraulic telescopic rod 8 penetrates through the extrusion frame 7 and extends above the top of the workbench 1, and the driving end of the hydraulic telescopic rod 8 is fixedly connected with an extrusion block 9. The extrusion frame 7 provides a stable mounting base and force support for the hydraulic telescopic rod 8, so that the force axis is kept in alignment with the workpiece machining end when the hydraulic telescopic rod 8 drives the extrusion block 9 to vertically extrude downward, and the hydraulic power is effectively converted into stable and accurate vertical forming force.

[0037] Further, the front surface of the workbench 1 is provided with a sliding hole below, which is matched with the plug plate 17. The sliding hole provides accurate linear guidance for the reciprocating movement of the plug plate 17, so that the movement track of the plug plate 17 is stable and without deviation during the process of being inserted into or withdrawn from the limiting groove 21 of the movable column 16, thereby ensuring the reliability and repeatability of the locking and releasing actions of the limiting assembly 4.

[0038] Embodiment 2

[0039] Further optimize the output shaft spline cold extrusion forming device provided in embodiment 1, specifically, the inside of workbench 1 is provided with inner cavity 11, processing groove 2 penetrates the inside of inner cavity 11, bidirectional screw rod 15 is rotatably installed at the rear of the inside of inner cavity 11, the outer wall of bidirectional screw rod 15 is sleeved with symmetrically distributed adjusting block 13, adjusting block 13 is slidably connected with inner cavity 11, clamp 12 is fixedly installed on the opposite side of two adjusting blocks 13, clamp 12 corresponds to the position of processing groove 2, one side of the outer surface of workbench 1 is provided with driving assembly.

[0040] Further, the driving assembly comprises a servo motor 14 fixedly installed on one side of the outer surface of the workbench 1, the driving end of the servo motor 14 penetrates the workbench 1 and extends into the inner cavity 11, and the driving end of the servo motor 14 is fixedly connected with one end of the bidirectional screw rod 15.

[0041] Further, the outer wall of bidirectional screw rod 15 is provided with symmetrically distributed left-handed thread and right-handed thread, and the adjusting block 13 is provided with a threaded hole matched with the bidirectional screw rod 15, and the adjusting block 13 is threadedly connected with the bidirectional screw rod 15 through the threaded hole. It is ensured that under the driving of a single servo motor 14, two adjusting blocks 13 can realize accurate synchronous reverse motion along the axis of bidirectional screw rod 15, so as to drive clamp 12 to efficiently and stably complete the centering clamping or loosening action of the workpiece.

[0042] Further, the opposite surfaces of the two clamps 12 are bonded with anti-skid pads. The friction coefficient of the clamping surface can be effectively increased, and the static friction force of the clamp 12 to the workpiece can be significantly improved under the same clamping force, which can prevent the workpiece from slipping or deflecting during extrusion, ensure the forming precision, and avoid damaging the workpiece surface due to excessive clamping, and balance the clamping reliability and workpiece protection.

[0043] It should be noted that the controller control circuit can be realized by simple programming of those skilled in the art, which belongs to the common knowledge in the art, and only the use is described, without transformation, so the control mode and circuit connection are not described in detail.

[0044] The use process of the output shaft spline cold extrusion forming device provided by the utility model is as follows:

[0045] In use, first, according to the size of the workpiece, the depth of the processing groove 2 is set, the first electric telescopic rod 18 is started to make its driving end extend, the baffle 19 is pushed to displace outward against the pulling force of the spring 20, and the plug plate 17 linked with the baffle 19 is driven to slide along the guiding sliding hole on the workbench 1 until the plug plate 17 is completely out of the limiting groove 21 in the side wall of the movable column 16, at which time the mechanical constraint of the limiting assembly 4 to the movable column 16 is released. Then the second electric telescopic rod 22 is driven, and the movable column 16 is driven by the driving end of the second electric telescopic rod 22 to move in the processing groove 2 in the vertical direction for accurate displacement, so that the effective depth of the processing groove 2 is continuously adjusted. After the depth is determined, the driving end of the first electric telescopic rod 18 is retracted, and under the restoring force of the spring 20, the baffle 19 drives the plug plate 17 to reinsert into the limiting groove 21 of the corresponding height on the movable column 16, so that the rigid mechanical locking of the position of the movable column 16 is completed. The workpiece is placed into the processing groove 2 through the opening at the top of the processing groove 2, and the bottom end of the workpiece is placed on the top surface of the movable column 16, and after the workpiece is positioned with the to-be-processed end upward, the hydraulic telescopic rod 8 is controlled to drive the extrusion block 9 to move downward to apply a forming load to the workpiece. In the extrusion process, the huge working load of the movable column 16 is directly transmitted to the main structure of the workbench 1 through the meshing interface of the plug plate 17 and the limiting groove 21, and the main structure of the workbench 1 is wholly loaded, which effectively avoids the risk that the second electric telescopic rod 22 bears the main processing load, and significantly improves the system stiffness and stability of the movable column 16 in the load state. After the workpiece is formed, the workpiece can be directly taken out from above, or after the constraint of the limiting assembly 4 is released, the workpiece is pushed out by the upward movement of the movable column 16 driven by the second electric telescopic rod 22, which is convenient for demolding. The depth adjustment of the movable column 16 is realized through the electromechanical integration operation of the first electric telescopic rod 18, the second electric telescopic rod 22 and the spring 20, which greatly improves the adjustment efficiency and operation convenience; more importantly, the rigid limiting mechanism composed of the plug plate 17 and the limiting groove 21 directly guides the processing load to the main body of the workbench 1, which not only greatly reduces the load requirement of the second electric telescopic rod 22, but also avoids the abnormal wear of the transmission components under high pressure, and fundamentally enhances the operation reliability and structural durability of the system in long-term high-load working conditions.

[0046] After the workpiece is placed in the processing groove 2, the servo motor 14 is started, and the output shaft of the servo motor 14 drives the bidirectional screw rod 15 to rotate. With the synchronous reverse transmission action of the left-hand thread and the right-hand thread on the bidirectional screw rod 15, and relying on the precise sliding guide constraint between the adjusting block 13 and the inner cavity 11 of the device, the two adjusting blocks 13 can realize stable and synchronous relative or opposite movement along the screw rod axis. The displacement of the adjusting block 13 directly drives the clamp 12 fixedly connected thereto to move, so that the two clamps 12 approach each other and extend into the inside of the processing groove 2 to implement accurate clamping and positioning of the workpiece. The clamping mechanism effectively ensures that the workpiece does not displace or vibrate in the subsequent extrusion forming process, and guarantees the stability and forming precision of the processing process.

[0047] It should be noted that all kinds of components used in the present application are standard components and can be purchased from the market. The specific connection mode of each part adopts the conventional means of bolt, rivet and welding in the prior art. The mechanical, parts and electrical equipment adopt conventional models in the prior art. The circuit connection adopts the conventional connection mode in the prior art. The electrical equipment is in communication with the external safe power supply. The specific description is not made here.

[0048] In the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specified. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] Obviously, the above-described embodiments are only part of the embodiments of the present application, not all embodiments. The preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some technical features. Any equivalent structure made by using the content of the present application specification and drawings, directly or indirectly used in other related technical fields, is also within the patent protection scope of the present application.

Claims

1. An output shaft spline cold extrusion forming apparatus characterized by, Including the workbench (1), both sides of the bottom of the workbench (1) are fixedly installed with symmetrically distributed support legs (6), the support legs (6) are fixedly installed with fixing frames (5), the top of the workbench (1) is provided with a machining groove (2), the top of the workbench (1) is provided with an extrusion assembly, one side of the front of the workbench (1) is fixedly installed with a controller (3); The bottom of the workbench (1) is provided with a bottom groove (10), the inner wall of the bottom groove (10) is slidably connected with a movable column (16), the top end of the movable column (16) extends into the machining groove (2), the top of the fixing frame (5) is fixedly installed with a second electric telescopic rod (22), the driving end of the second electric telescopic rod (22) is fixedly connected with the bottom end of the movable column (16), and the front of the workbench (1) is provided with a limiting assembly (4).

2. The output shaft spline cold extrusion forming device according to claim 1, characterized in that, The limiting assembly (4) includes a plug plate (17) slidably connected to the front of the workbench (1), the rear end of the plug plate (17) extends below the inside of the machining groove (2), the front end of the plug plate (17) is fixedly installed with a baffle (19), the back of the baffle (19) is fixedly installed with a spring (20) between the front of the workbench (1), the rear of the other side of the back of the baffle (19) is fixedly installed with a first electric telescopic rod (18), a plurality of limiting grooves (21) are equidistantly formed on the outer wall of the movable column (16), and the limiting grooves (21) are movably connected with the plug plate (17).

3. The device for cold extrusion forming of output shaft spline according to claim 1, characterized in that, The inside of the workbench (1) is provided with an inner cavity (11), the machining groove (2) penetrates the inside of the inner cavity (11), a bidirectional screw rod (15) is rotatably installed at the rear of the inside of the inner cavity (11), symmetrically distributed adjusting blocks (13) are sleeved on the outer wall of the bidirectional screw rod (15), the adjusting blocks (13) are slidably connected with the inner cavity (11), clamps (12) are fixedly installed on the opposite sides of the two adjusting blocks (13), the positions of the clamps (12) correspond to the machining groove (2), and one side of the outer surface of the workbench (1) is provided with a driving assembly.

4. The output shaft spline cold extrusion forming device according to claim 3, characterized in that, The driving assembly includes a servo motor (14) fixedly installed on one side of the outer surface of the workbench (1), the driving end of the servo motor (14) penetrates the workbench (1) and extends into the inside of the inner cavity (11), and the driving end of the servo motor (14) is fixedly connected with one end of the bidirectional screw rod (15).

5. The device for cold extrusion forming of output shaft splines according to claim 3, characterized in that, The outer wall of the bidirectional screw rod (15) is provided with symmetrically distributed left-handed threads and right-handed threads, a threaded hole is formed in the adjusting block (13) and matched with the bidirectional screw rod (15), and the adjusting block (13) is threadedly connected with the bidirectional screw rod (15) through the threaded hole.

6. The output shaft spline cold extrusion forming device according to claim 1, characterized in that, The extrusion assembly includes an extrusion frame (7) fixedly installed on the top of the workbench (1), a hydraulic telescopic rod (8) fixedly installed on the top of the extrusion frame (7), the driving end of the hydraulic telescopic rod (8) penetrates the extrusion frame (7) and extends above the top of the workbench (1), and the driving end of the hydraulic telescopic rod (8) is fixedly installed with an extrusion block (9).

7. The device for cold extrusion forming of output shaft splines according to claim 2, characterized by the fact that, The lower part of the front of the workbench (1) is provided with a sliding hole matched with the plug (17).

8. The device for cold extrusion forming of output shaft splines according to claim 3, characterized in that, The opposite surface of the two clamps (12) is bonded with a non-slip pad.

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