Key groove milling equipment for crank production

Abstract

The utility model relates to the technical field of crank production, in particular to a keyway milling device for crank production, which is characterized in that a processing platform is arranged on a base through a moving component; the first clamping plate is parallel to the moving direction of the machining platform and arranged on the first side face of the machining platform, a groove milling assembly is arranged above the base close to one side of the first clamping plate, and a plurality of first clamping blocks are arranged on the inner side of the first clamping plate in the length direction of the first clamping plate. The second clamping plate is arranged on the second side face of the machining platform and is driven by the hydraulic cylinder to horizontally move towards the first clamping plate, and a plurality of second clamping blocks are arranged on the inner side of the second clamping plate; the lower pressing blocks are perpendicular to one another, the connecting shafts arranged at the corners of the middle portions of the lower pressing blocks are hinged to the horizontally-arranged connecting frame, the connecting frame ascends and descends under the action of the lifting assembly, and the two ends of the lower pressing blocks abut against the two corresponding workpieces below the lower pressing blocks. The clamp has the advantages of being good in workpiece clamping stability, not prone to deviation of workpieces and high in machining efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of crank production, in particular to a keyway milling device for crank production. Background Art

[0002] Cranks are widely used in bicycle accessories. The manufacturing accuracy of cranks directly affects the performance and life of the entire transmission system. With the rapid development of modern machinery manufacturing industry, the requirements for crank production efficiency and accuracy are getting higher and higher.

[0003] At present, some existing keyway milling equipment has improved the production efficiency and processing accuracy of cranks to a certain extent, but there are still some problems. The clamping stability of the existing keyway milling equipment is not good, which may cause the workpiece to shift during processing and affect the subsequent processing accuracy; in addition, the fixtures of these devices can generally only clamp one workpiece, and it is not convenient to clamp and fix multiple workpieces, which is not conducive to batch processing of workpieces. Utility Model Content

[0004] In view of this, the utility model provides a keyway milling device for crank production, which has the advantages of good workpiece clamping stability, not easy to cause the workpiece to deviate, and high processing efficiency.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A keyway milling device for crank production, comprising:

[0007] A base, on which a processing platform is arranged via a moving assembly, and the moving assembly is used to drive the processing platform to move horizontally;

[0008] A first clamping plate is parallel to the moving direction of the processing platform and is arranged on the first side of the processing platform, and a milling slot assembly for processing a workpiece is arranged above the base near the first clamping plate, and a plurality of first clamping blocks are arranged on the inner side of the first clamping plate along its length direction;

[0009] A second clamping plate is arranged on the second side of the processing platform and is driven by a hydraulic cylinder to move horizontally toward the first clamping plate, wherein a plurality of second clamping blocks arranged on the inner side of the second clamping plate correspond one-to-one to the plurality of first clamping blocks; and

[0010] Multiple lower pressure blocks are connected by splicing two mutually perpendicular plates. The connecting shafts arranged at the central corners are hinged to the horizontally arranged connecting frames, and the connecting frames are raised and lowered under the action of the lifting assembly. The two ends of the multiple lower pressure blocks are abutted against the two corresponding workpieces below them, so as to clamp or loosen the multiple workpieces.

[0011] A further improvement of the utility model is that the lifting assembly comprises:

[0012] A first screw rod is vertically arranged above the connecting frame, and an upper end of the first screw rod passes through a support plate arranged above the second clamping plate;

[0013] Two optical axes are symmetrically arranged on both sides of the first screw rod and are slidably connected to and penetrate the support plate; and

[0014] A first gear is rotatably disposed on the upper surface of the support plate, and a middle portion thereof is threadedly connected to and penetrates the first screw rod;

[0015] The second gear rotates under the driving of the first motor and meshes with the first gear.

[0016] A further improvement of the utility model is that the moving component comprises:

[0017] Two slide grooves are horizontally arranged on both sides of the base along the moving direction of the processing platform;

[0018] Two slide plates are respectively arranged on both sides of the lower surface of the processing platform, and the lower ends of the two slide plates are respectively slidably connected with and penetrate the two slide grooves; and

[0019] Two second screw rods are respectively arranged on two sides below the base, and are threadedly connected with and penetrate the lower ends of the two slide plates, and rotate synchronously under the action of the rotating component.

[0020] A further improvement of the utility model is that the rotating member comprises:

[0021] Two first bevel gears, respectively disposed at two ends of the second screw; and

[0022] The transmission shaft is rotatably arranged under the base and perpendicular to the length direction of the second screw rod under the drive of the second motor. The two second bevel gears arranged at both ends of the transmission shaft are respectively meshed with the two first bevel gears.

[0023] A further improvement of the utility model is that the milling groove assembly includes a milling cutter, which is rotatably arranged on the top plate above the base under the drive of the third motor, and the milling cutter is located above the processing platform. The control assembly can drive the horizontal movement and lifting of the third motor, and a dust suction assembly is also arranged on the top plate for absorbing debris.

[0024] A further improvement of the utility model is that both the first clamping block and the second clamping block are provided with V-shaped grooves.

[0025] A further improvement of the utility model is that the sides of the pressing block, the first clamping block and the second clamping block that are in contact with the workpiece are all coated with a rubber coating.

[0026] A further improvement of the present invention is that the second motor is a stepping motor.

[0027] Due to the adoption of the above technical solution, the technical progress achieved by the utility model is:

[0028] The utility model provides a keyway milling equipment for crank production. Above the processing platform, the second clamping plate can be driven by a hydraulic cylinder to move horizontally closer, so that multiple first clamping blocks and multiple second clamping blocks can clamp multiple workpieces synchronously, and can also be used in conjunction with multiple liftable pressing blocks to limit the upper and lower ends of the workpiece, which can improve the stability of the workpiece during the processing and ensure that the workpiece will not shift during the processing, thereby improving the processing accuracy and efficiency, and helping to improve the quality of the overall processing technology.

[0029] The simultaneous assembly and disassembly of multiple workpieces can also improve the working efficiency of the equipment. In addition, when the second motor drives the two first bevel gears and the second bevel gears to mesh and rotate, it can drive the two second screws to rotate, so that the processing platform moves horizontally. The milling slot assembly can process the workpieces one by one while moving, thereby improving the processing efficiency and making the equipment more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 This is a schematic diagram of the structure of a keyway milling equipment for crank production described in the utility model;

[0032] Figure 2 This is a schematic diagram of the installation structure above the processing platform of the utility model;

[0033] Figure 3 It is a structural schematic diagram of the mobile assembly of the utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the slot milling assembly of the utility model;

[0035] Description of reference numerals:

[0036] 10-base, 11-top plate, 20-moving component, 21-slide, 22-slide plate, 23-second screw, 24-first bevel gear, 25-transmission shaft, 26-second motor, 27-second bevel gear, 30-machining platform, 31-first clamping plate, 311-first clamping block, 32-second clamping plate, 321-second clamping block, 322-support plate, 33-hydraulic cylinder, 34-down block, 341-connecting shaft, 35-connecting frame, 36-lifting component, 361-first screw, 362-optical axis, 363-first gear, 364-second gear, 365-first motor, 40-milling groove component, 41-milling cutter, 42-third motor, 43-control component, 44-vacuum cleaner, 45-pipeline, 46-dust hood. DETAILED DESCRIPTION

[0037] The following will be combined with the accompanying drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, in the following description, specific details such as specific system structures and technologies are proposed for the purpose of explanation rather than limitation, so as to thoroughly understand the embodiments of the utility model. However, it should be clear to those skilled in the art that the utility model can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from hindering the description of the utility model.

[0038] The utility model provides a keyway milling device for crank production. Figure 1 -Attached Figure 4 It can be seen that a keyway milling device for crank production includes: a processing platform 30 is arranged on a base 10 through a moving component 20, and the moving component 20 is used to drive the processing platform 30 to move horizontally; a first clamping plate 31 is parallel to the moving direction of the processing platform 30 and is arranged on the first side of the processing platform 30, and a milling slot assembly 40 for processing a workpiece is arranged above the base 10 close to the first clamping plate 31, and a plurality of first clamping blocks 311 are arranged on the inner side of the first clamping plate 31 along its length direction; a second clamping plate 32 is arranged on the second side of the processing platform 30, and is arranged on the hydraulic cylinder 3 3, it moves horizontally toward the first clamping plate 31, and the multiple second clamping blocks 321 arranged on the inner side of the second clamping plate 32 correspond to the multiple first clamping blocks 311 one by one to clamp the two ends of the workpiece in the length direction; the multiple pressing blocks 34 are connected by two mutually perpendicular plates spliced ​​together, and the connecting shafts 341 arranged at the central corners are hinged to the horizontally arranged connecting frame 35, and the connecting frame 35 is lifted and lowered by the lifting assembly 36, and the two ends of the multiple pressing blocks 34 abut against the two workpieces corresponding thereto, so as to clamp or release the multiple workpieces.

[0039] Loading stations and unloading stations can be set on both sides of the base 10. After the loading station places multiple workpieces on the processing platform 30 and fixes them simultaneously, the moving component 20 drives the processing platform 30 to move horizontally to the bottom of the milling groove component 40 to perform milling operations one by one, and then moves horizontally to the unloading station to disassemble and collect the processed multiple workpieces, and then repeats the above operations. At the same time, multiple workpieces can be fixed and disassembled, which is conducive to batch processing of workpieces. The overall processing efficiency of the equipment will be greatly improved, making the equipment more practical and convenient to operate.

[0040] When fixing multiple workpieces, this equipment first extends the piston rod of the hydraulic cylinder 33 to drive the second clamping plate 32 to move horizontally on the processing platform 30, so that the second clamping plate 32 is close to the first clamping plate 31, and the multiple first clamping blocks 311 and the multiple second clamping blocks 321 correspond to the multiple workpieces one by one and clamp synchronously, and then the connecting frame 35 is driven down by the lifting component 36, so that the two ends of the lower pressing block 34 abut against the corresponding workpiece below, and the upper and lower ends of the workpiece are limited. Specifically, the number of the lower pressing blocks 34 is half of the workpiece. Limiting the two ends of the length direction and the upper and lower ends of the workpiece can improve the stability of the workpiece during the processing, ensure that the workpiece will not be offset during the processing, thereby improving the processing accuracy and efficiency, and helping to improve the quality of the overall processing technology.

[0041] As an embodiment, according to the attached Figure 2 It can be seen that the lifting assembly 36 includes: a first screw rod 361 is vertically arranged above the connecting frame 35, and the upper end thereof passes through the support plate 322 arranged above the second clamping plate 32; two optical axes 362 are symmetrically arranged on both sides of the first screw rod 361, and are slidably connected and penetrated with the support plate 322 up and down; a first gear 363 is rotatably arranged on the upper surface of the support plate 322, and the middle part thereof is threadedly connected and penetrated with the first screw rod 361; a second gear 364 rotates under the drive of the first motor 365, and meshes with the first gear 363.

[0042] When the first motor 365 drives the second gear 364 to rotate, the first gear 363 and the second gear 364 mesh, driving the first screw 361 to rotate, and the two optical axes 362 are slidably connected and penetrate the support plate 322, which guides the lifting and lowering of the first screw 361 and the connecting frame 35. Preferably, the number of teeth of the first gear 363 is smaller than the number of teeth of the second gear 364, so that the angular velocity of the first gear 363 is larger, the lifting and lowering speed of the first screw 361 is increased, and the lower pressing block 34 clamps the workpiece faster.

[0043] As an embodiment, according to the attached Figure 3It can be seen that the moving component 20 includes: two slide grooves 21 are horizontally arranged on both sides of the base 10 along the moving direction of the processing platform 30; two slide plates 22 are respectively arranged on both sides of the lower surface of the processing platform 30, and the lower ends of the two slide plates 22 are respectively slidably connected to and penetrate the two slide grooves 21; two second screw rods 23 are respectively arranged on both sides below the base 10, and are threadedly connected to and penetrate the lower ends of the two slide plates 22, and rotate synchronously under the action of the rotating component.

[0044] When the two second screw rods 23 rotate synchronously under the action of the rotating component, the two slide plates 22 are threadedly connected to the two second screw rods 23, driving the processing platform 30 to move horizontally, and the two slide grooves 21 are slidably connected to the two slide plates 22 to guide the processing platform 30. The milling groove assembly 40 can process the workpieces one by one while moving.

[0045] In this embodiment, according to the specification Figure 3 It can be seen that the rotating component includes: two first bevel gears 24 are respectively arranged at the ends of the two second screw rods 23; the transmission shaft 25 is rotatably arranged under the base 10 under the drive of the second motor 26, and is perpendicular to the length direction of the second screw rod 23, and the two second bevel gears 27 arranged at both ends of the transmission shaft 25 are respectively meshed with the two first bevel gears 24.

[0046] When the second motor 26 drives the two first bevel gears 24 and the second bevel gear 27 to mesh and rotate, the two second screw rods 23 can be driven to rotate, and the two slide plates 22 are threadedly connected with the two second screw rods 23, driving the processing platform 30 to move horizontally and smoothly.

[0047] As an embodiment, according to the attached Figure 4 It can be seen that the milling groove assembly 40 includes a milling cutter 41, which is rotatably arranged on the top plate 11 above the base 10 under the drive of the third motor 42, and the milling cutter 41 is located above the processing platform 30. The control assembly 43 can drive the third motor 42 to move horizontally and lift. The third motor 42 drives the milling cutter 41 to rotate, and a dust suction assembly is also arranged on the top plate 11 for absorbing debris.

[0048] The third motor 42 drives the milling cutter 41 to rotate, and under the action of the control component 43, drives the third motor 42 and the milling cutter 41 to move and rise and fall to perform the slot milling operation. During the slot milling process, the dust collection component can be used to absorb the debris generated during the processing. The dust collection component includes a dust collector 44 and a dust collection hood 46 connected through a pipeline 45.

[0049] In this embodiment, according to the specification Figure 2 It can be seen that V-shaped grooves are provided on both the first clamping block 311 and the second clamping block 321. The two V-shaped grooves are arranged opposite to each other, so as to facilitate clamping of the arc surfaces at both ends of the length direction of the workpiece.

[0050] In this embodiment, the sides of the lower pressing block 34, the first clamping block 311, and the second clamping block 321 that are in contact with the workpiece are coated with a rubber coating to prevent excessive pressure or wear on the workpiece surface during contact.

[0051] In this embodiment, the second motor 26 is a stepping motor, which is convenient for controlling the two second screws 23 to rotate accurately, so that the working platform reaches a specified position and the workpiece above the processing platform 30 is processed accurately.

[0052] It should be noted that, in this patent application, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A keyway milling device for crank production, characterized in that: include: A base, on which a processing platform is arranged via a moving assembly, and the moving assembly is used to drive the processing platform to move horizontally; A first clamping plate is parallel to the moving direction of the processing platform and is arranged on the first side of the processing platform, and a milling slot assembly for processing a workpiece is arranged above the base near the first clamping plate, and a plurality of first clamping blocks are arranged on the inner side of the first clamping plate along its length direction; A second clamping plate is arranged on the second side of the processing platform and is driven by a hydraulic cylinder to move horizontally toward the first clamping plate, wherein a plurality of second clamping blocks arranged on the inner side of the second clamping plate correspond one-to-one to the plurality of first clamping blocks; and Multiple lower pressure blocks are connected by splicing two mutually perpendicular plates. The connecting shafts arranged at the central corners are hinged to the horizontally arranged connecting frames, and the connecting frames are raised and lowered under the action of the lifting assembly. The two ends of the multiple lower pressure blocks are abutted against the two corresponding workpieces below them, so as to clamp or loosen the multiple workpieces.

2. A keyway milling device for crank production according to claim 1, characterized in that: The lifting assembly comprises: A first screw rod is vertically arranged above the connecting frame, and an upper end of the first screw rod passes through a support plate arranged above the second clamping plate; Two optical axes are symmetrically arranged on both sides of the first screw rod and are slidably connected to and penetrate the support plate; and A first gear is rotatably disposed on the upper surface of the support plate, and a middle portion thereof is threadedly connected to and penetrates the first screw rod; The second gear rotates under the driving of the first motor and meshes with the first gear.

3. The keyway milling equipment for crank production according to claim 2, characterized in that: The mobile assembly comprises: Two slide grooves are horizontally arranged on both sides of the base along the moving direction of the processing platform; Two slide plates are respectively arranged on both sides of the lower surface of the processing platform, and the lower ends of the two slide plates are respectively slidably connected with and penetrate the two slide grooves; and Two second screw rods are respectively arranged on two sides below the base, and are threadedly connected with and penetrate the lower ends of the two slide plates, and rotate synchronously under the action of the rotating component.

4. The keyway milling equipment for crank production according to claim 3, characterized in that: The rotating member comprises: Two first bevel gears, respectively disposed at two ends of the second screw; and The transmission shaft is rotatably arranged under the base and perpendicular to the length direction of the second screw rod under the drive of the second motor. The two second bevel gears arranged at both ends of the transmission shaft are respectively meshed with the two first bevel gears.

5. The keyway milling equipment for crank production according to claim 1, characterized in that: The milling groove assembly includes a milling cutter, which is rotatably arranged on the top plate above the base under the drive of the third motor, and the milling cutter is located above the processing platform. The control assembly can drive the horizontal movement and lifting of the third motor, and a dust suction assembly is also arranged on the top plate for absorbing debris.

6. A keyway milling device for crank production according to any one of claims 1 to 5, characterized in that: The first clamping block and the second clamping block are both provided with V-shaped grooves.

7. The keyway milling equipment for crank production according to claim 6, characterized in that: The sides of the pressing block, the first clamping block and the second clamping block contacting the workpiece are all coated with rubber coating.

8. The keyway milling equipment for crank production according to claim 4, characterized in that: The second motor is a stepping motor.

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