A milling system

Abstract

The application discloses a milling system, which comprises a bed body and a motor, the output shaft of the motor drives a first transmission mechanism and a second transmission mechanism; the horizontal and vertical movement of a workbench is driven by the output of the first transmission mechanism, and a milling cutter is driven by the output of the second transmission mechanism; a workpiece is installed on the workbench, and the clamping of the workpiece is completed by the vertical movement of the workbench and the dead weight of a clamping mechanism when the milling cutter mills. The milling system has the beneficial effects that one motor drive can synchronously and automatically complete the vertical and horizontal movement of the workbench, the clamping of the workpiece and the milling of the milling cutter and other machining processes, the machining time is fast, and the machining precision is high.

Description

Technical Field

[0001] This invention relates to the technical field of milling, and more particularly to a system for milling shaft-type parts. Background Technology

[0002] In traditional machining, milling evenly distributed straight grooves on a shaft (such as a spline shaft) primarily employs a dividing head fixture and a specialized multi-bladed combination tool. This method requires operators to manually adjust the dividing head to ensure the accurate positioning of each groove. However, this method has significant drawbacks. Firstly, the need for multiple precise manual adjustments greatly increases machining time. Secondly, human error can easily lead to positional errors, ultimately resulting in low efficiency and poor machining accuracy.

[0003] Another commonly used technique is milling using CNC machine tools. While this technique increases the automation of machining, challenges can still arise when handling straight grooves of certain shapes or sizes. A significant drawback is the high programming complexity, especially for non-standard shapes or parts with special requirements. Furthermore, the high cost of CNC machine tools limits their application in some small or budget-constrained factories.

[0004] Another method, using contour mapping, involves guiding the tool path with a pre-fabricated template that reflects the indexing characteristics of the circumferential groove, thus machining the workpiece. While this method can ensure machining consistency to some extent, its drawbacks include a lengthy preparation phase, especially the time-consuming and labor-intensive template fabrication process. Furthermore, wear or damage to the template directly affects the accuracy of subsequent machining, increasing maintenance costs and complexity. Summary of the Invention

[0005] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a new type of milling system that adapts to diverse production needs and supports rapid milling, so that a single machine can meet the needs of fine milling. It is convenient to use, has higher processing accuracy, and also has flexible adjustment capabilities.

[0006] To achieve the above objectives, this invention proposes a novel milling system, comprising a bed and a motor, characterized in that: the output shaft of the motor drives a first transmission mechanism and a second transmission mechanism; the output of the first transmission mechanism drives the lateral and vertical movement of the worktable, and the output of the second transmission mechanism drives the milling cutter and a clamping mechanism; the workpiece is mounted on the worktable, and during milling, the workpiece is clamped by the vertical movement of the worktable and the gravity of the clamping mechanism; wherein, the first transmission mechanism includes a first transmission wheel, a first transmission belt, a second transmission wheel, a first transmission shaft, and a third transmission... The system comprises a wheel, a second transmission belt, a fourth transmission wheel, a second transmission shaft, a cam, and a connecting rod. A first transmission wheel is mounted on the motor output shaft. The first transmission wheel and the second transmission wheel form a closed synchronous belt drive through the first transmission belt. The second transmission wheel and the third transmission wheel are coaxially driven through the first transmission shaft. The third transmission wheel and the fourth transmission wheel form a closed synchronous belt drive through the second transmission belt. The fourth transmission wheel is coaxially connected to the cam through the second transmission shaft. A connecting rod is mounted on the circumference of the cam. When the cam rotates, the outer surface of the cam drives the worktable to move horizontally, and the connecting rod drives the worktable to move vertically.

[0007] Furthermore, the worktable includes a horizontally movable first worktable and a vertically movable second worktable, and a first guide rail pair that can slide horizontally is formed between the contact surfaces of the first worktable and the second worktable.

[0008] The first worktable is located on the second worktable. A first spring assembly is provided on the horizontal side of the first worktable. A moving rod is also provided on the first worktable. When the cam rotates, the outer side of the cam contacts the moving rod and drives the first worktable to move horizontally.

[0009] A balance bar is provided on the front side of the second worktable. The connecting rod is connected to the balance bar at the end away from the cam. When the cam rotates, the connecting rod drives the first worktable and the second worktable to move up and down.

[0010] Furthermore, the milling system is also equipped with a wire rope, a pulley, and a counterweight; one end of the wire rope is connected to the balance bar, the wire rope extends downward after passing over the pulley above the balance bar, and the other end of the wire rope is equipped with a counterweight.

[0011] Furthermore, the second transmission mechanism includes a fifth transmission wheel, a third transmission belt, a sixth transmission wheel, and a third transmission shaft; the fifth transmission wheel is mounted on the motor output shaft, and the fifth transmission wheel and the sixth transmission wheel form a closed synchronous belt transmission through the third transmission belt, and the sixth transmission wheel is coaxially driven with the milling cutter through the third transmission shaft.

[0012] Furthermore, the clamping mechanism includes a clamping block and a clamping fork; the workpiece is a shaft, which is mounted on the first worktable; the clamping fork has a head and a rod, with the head of the clamping fork located on the outside of the shaft; the top of the clamping block is located above the crossbeam of the bed; and a second horizontal guide rail pair is formed between the bottom of the clamping block and the rod of the clamping fork.

[0013] Furthermore, the milling system is also equipped with an indexing ratchet, a locating pin is provided on the first worktable, the indexing ratchet is located outside the locating pin, the bottom of the shaft is connected to the center hole of the indexing ratchet and located above the locating pin, the shaft, the indexing ratchet and the locating pin are all arranged coaxially; a number of recesses are evenly distributed on the circumference of the top surface of the indexing ratchet, the clamping mechanism also includes a clamping rod, the top of the clamping rod is connected to the head of the clamping fork, the bottom of the clamping rod matches the recess, when the shaft is clamped, the bottom of the clamping rod extends into the recess.

[0014] Furthermore, the milling system also includes a ratchet lever and a second spring assembly. One end of the ratchet lever is provided with a second spring assembly. When the shaft is milled in a later position, the other end of the ratchet lever unidirectionally moves one tooth of the indexing ratchet, thereby causing the shaft to rotate synchronously by a machining angle.

[0015] Furthermore, it also includes a guide rod, which is arranged vertically and passes through a hole in the rod portion of the clamping fork.

[0016] Furthermore, the clamping block is a T-shaped block, with the top of the T-shaped block located above the crossbeam of the bed, and the bottom of the T-shaped block forming the second guide rail pair between the rod of the clamping fork.

[0017] Furthermore, the first guide rail pair is a first dovetail groove guide rail pair, and the second guide rail pair is a second dovetail groove guide rail pair; a vertical bed guide rail is provided on the bed, and the second worktable can slide up and down along the bed guide rail.

[0018] The main advantages of this invention are: a single motor drive can synchronously and automatically complete multiple processing steps such as vertical and horizontal movement of the worktable, clamping of the workpiece, and milling with a milling cutter, resulting in fast processing time and high processing accuracy. Attached Figure Description

[0019] Figure 1 This is a first-view three-dimensional structural diagram of a milling system in one embodiment of the present invention;

[0020] Figure 2 This is a first-view three-dimensional structural diagram of a milling system in one embodiment of the present invention;

[0021] Figure 3This is a three-dimensional structural diagram of a machine tool in a milling system according to one embodiment of the present invention;

[0022] Figure 4 This is a top view of a transmission mechanism in a milling system according to one embodiment of the present invention;

[0023] Figure 5 This is a first-view perspective three-dimensional structural diagram of a transmission mechanism in a milling system according to one embodiment of the present invention;

[0024] Figure 6 This is a two-dimensional structural diagram of a transmission mechanism in a milling system from a second perspective, according to one embodiment of the present invention.

[0025] Figure 7 This is a three-dimensional structural diagram of a mounting bracket in a milling system according to one embodiment of the present invention;

[0026] Figure 8 This is a front view of a milling system according to one embodiment of the present invention;

[0027] Figure 9 for Figure 8 A schematic diagram of the AA direction;

[0028] Figure 10 for Figure 8 A schematic diagram of the BB direction;

[0029] Figure 11 for Figure 8 A schematic diagram of the CC direction;

[0030] Figure 12 for Figure 8 A schematic diagram of the EE direction;

[0031] Figure 13 for Figure 8 A schematic diagram of the FF direction;

[0032] Figure 14 for Figure 13 A magnified view of a section along the central I direction;

[0033] Figure 15 This is a schematic diagram of the assembly of a machining shaft and an indexing ratchet in a milling system according to one embodiment of the present invention;

[0034] Figure 16 This is a three-dimensional structural diagram of a milling system from a first top view angle, according to one embodiment of the present invention.

[0035] Figure 17 This is a three-dimensional structural diagram of a milling system from a second top view angle, according to one embodiment of the present invention.

[0036] Figure 18This is a first process of a motion decomposition diagram of a milling system in one embodiment of the present invention;

[0037] Figure 19 This is a second process of a motion decomposition diagram of a milling system in one embodiment of the present invention;

[0038] Figure 20 This is the third process of a motion decomposition diagram of a milling system in one embodiment of the present invention;

[0039] Figure 21 This is the fourth process of a motion decomposition diagram of a milling system in one embodiment of the present invention.

[0040] The blade manufacturing system of the present invention will be further explained and described below with reference to the accompanying drawings and specific embodiments. However, such explanation and description do not constitute an undue limitation on the technical solution of the present invention.

[0041] refer to Figure 1 and combined Figures 1-21 In one embodiment of the present invention, a milling system includes a bed 1 and a motor 2. The output shaft of the motor 2 drives a first transmission mechanism and a second transmission mechanism. The output of the first transmission mechanism drives the horizontal and vertical movement of the worktable, and the output of the second transmission mechanism drives the milling cutter. The workpiece is mounted on the worktable. During milling, the workpiece is clamped by the vertical movement of the worktable and the weight of the clamping mechanism.

[0042] The first transmission mechanism includes a first transmission wheel 31, a first transmission belt 32, a second transmission wheel 33, a first transmission shaft 34, a third transmission wheel 35, a second transmission belt 36, a fourth transmission wheel 37, a second transmission shaft 38, a cam 39, and a connecting rod 30. The first transmission wheel 31 is mounted on the output shaft of the motor 2. The first transmission wheel 31 and the second transmission wheel 33 form a closed synchronous belt drive through the first transmission belt 32. The second transmission wheel 33 and the third transmission wheel 35 are coaxially driven through the first transmission shaft 34. The third transmission wheel 35 and the fourth transmission wheel 37 form a closed synchronous belt drive through the second transmission belt 36. The fourth transmission wheel 37 is coaxially connected to the cam 39 through the second transmission shaft 38. A connecting rod 30 is mounted on the circumference of the cam 39. When the cam 39 rotates, the outer surface of the cam 39 drives the worktable to move horizontally, and the connecting rod 30 drives the worktable to move vertically. The third transmission shaft 63 is mounted on the bracket 107.

[0043] As a preferred embodiment, the worktable includes a horizontally movable first worktable 41 and a vertically movable second worktable 42, with a horizontally sliding first guide rail pair formed between the contact surfaces of the first worktable 41 and the second worktable 42.

[0044] The first worktable 41 is mounted on the second worktable 42. A first spring assembly 43 is provided on the horizontal side of the first worktable 41. A moving rod 44 is also provided on the first worktable 41. When the cam 39 rotates, the outer side of the cam 39 contacts the moving rod 44, which drives the first worktable 41 to move horizontally.

[0045] A balance bar 45 is provided on the front side of the second worktable 42. The connecting rod 30 is connected to the balance bar 45 at the end away from the cam 39. When the cam 39 rotates, the connecting rod 30 drives the first worktable 41 and the second worktable 42 to move up and down.

[0046] As a preferred option, the milling system also includes a wire rope 51, a pulley 52, and a counterweight 53; one end of the wire rope 51 is connected to the balance bar 45, the wire rope 51 extends downward after passing over the pulley 52 above the balance bar 45, and the other end of the wire rope 51 is equipped with the counterweight 53.

[0047] As a preferred embodiment, the second transmission mechanism includes a fifth transmission wheel 60, a third transmission belt 61, a sixth transmission wheel 62, and a third transmission shaft 63; the fifth transmission wheel 60 is mounted on the output shaft of the motor 2, and the fifth transmission wheel 60 and the sixth transmission wheel 62 form a closed synchronous belt drive through the third transmission belt 61, and the sixth transmission wheel 62 is coaxially driven with the milling cutter 64 through the third transmission shaft 63.

[0048] As a preferred embodiment, the clamping mechanism includes a clamping block 70 and a clamping fork 71; the workpiece is a shaft 72, which is mounted on the first worktable 41. The clamping fork 71 has a head and a rod. The head of the clamping fork 71 is located on the outside of the shaft 72. The top of the clamping block 70 is located above the crossbeam 73 of the bed. The bottom of the clamping block 70 and the rod of the clamping fork 71 form a second horizontal guide rail pair 75.

[0049] As a preferred embodiment, the milling system also includes an indexing ratchet 80, a locating pin 81 on the first worktable 21, the indexing ratchet 80 being located outside the locating pin 81, and the bottom of the shaft 72 being connected to the center hole of the indexing ratchet 80 and located above the locating pin 81. The shaft 72, the indexing ratchet 80, and the locating pin 81 are all arranged coaxially. Several recesses 82 are evenly distributed around the circumference of the top surface of the indexing ratchet 80. The clamping mechanism also includes a clamping rod 74, the top of which is connected to the head of the clamping fork, and the bottom of which matches the recesses 82. When the shaft 72 is clamped, the bottom of the clamping rod extends into the recesses 82.

[0050] As a preferred option, the milling system also includes a ratchet lever 83 and a second spring assembly 84. One end of the ratchet lever 83 is provided with a second spring assembly 84. When the shaft 72 is milled in a later position, the other end of the ratchet lever 83 unidirectionally moves one tooth 85 of the indexing ratchet 80, thereby causing the shaft 72 to rotate synchronously by a machining angle.

[0051] refer to Figure 14 Understandably, a small portion of the second spring assembly 84 is installed within the spring seat 86. A ratchet lever pivot 88 is also provided at the center of the ratchet lever 83. During operation, the ratchet lever rotates around the pivot point of this pivot 88. To limit the rotation angle range of the ratchet lever, a ratchet lever limiter 87 is also provided at the front end of the second spring assembly 86. (Reference) Figure 14 ).

[0052] As a preferred embodiment, the device also includes a guide rod 76, which is vertically arranged and passes through a hole in the rod portion of the clamping fork 71.

[0053] As a preferred embodiment, the clamping block is a T-shaped block 700, the top of which is located above the crossbeam of the bed, and the bottom of which forms the second guide rail pair 75 with the rod of the clamping fork.

[0054] As a preferred option, the first guide rail pair 108 is a first dovetail groove guide rail pair, and the second guide rail pair 75 is a second dovetail groove guide rail pair.

[0055] Continue to refer to Figure 1 A vertically arranged bed guide rail 100 is also provided on the bed 1, and the second worktable 42 can slide up and down along the bed guide rail 100. The entire milling system is installed on the ground 102. The spring seat locking bolt 89 secures the second spring assembly 84 ( Figure 1 (Unmarked, refer to other attached diagrams) The third drive shaft 63 is mounted on the spring seat 86 and on the bracket 107.

[0056] refer to Figure 2 A first guide rail pair 108 is formed between the contact surfaces of the first worktable 41 and the second worktable 42.

[0057] refer to Figure 7 The bracket 104 of the pulley system is provided with a mounting hole 105 for the third drive shaft and a mounting hole 106 for the first drive shaft.

[0058] refer to Figure 18 and combined Figures 19-21 The connecting rod shaft 40 on the cam is in position 1, and the rotation range of the tool is 101. Figures 18-21The outer dashed outline of the cam is shown. The cam starts to rotate clockwise. The first worktable 41 moves to the left and the second worktable 42 moves upward. The ratchet lever moves the indexing ratchet by one tooth. The clamping block 70 is not lifted at this time, the clamping rod 74 does not enter the recess, and the clamping rod 74 has not yet clamped the indexing ratchet.

[0059] refer to Figure 19 With the connecting rod shaft 40 on the cam in position 2, the cam begins to rotate clockwise. The first worktable 41 then maintains a horizontal position, while the second worktable 42 continues to move upward. After the ratchet lever moves the indexing ratchet, it begins to deviate from the indexing ratchet. The clamping block 70 is lifted, and the clamping rod 74 extends into the recess and begins to clamp the indexing ratchet.

[0060] refer to Figure 20 With the connecting rod shaft on the cam in position 3, the cam continues to rotate clockwise. At this time, the first worktable 41 moves to the right, the second worktable 42 moves downward, and the ratchet lever contacts the indexing ratchet in the opposite direction. Since the second spring assembly of the indexing ratchet is compressed, it will not move the indexing ratchet (the indexing ratchet rotates in one direction). The clamping block 70 is lifted up, and the clamping rod 74 has clamped the indexing ratchet.

[0061] refer to Figure 21 With the connecting rod shaft 40 on the cam in position 4, the cam continues to rotate clockwise. The first worktable 41 remains in the same position, while the second worktable 42 continues to move downward. The ratchet lever contacts the indexing ratchet in the opposite direction. The second spring group of the indexing ratchet will not move the indexing ratchet (because the indexing ratchet rotates in one direction). The clamping block 70 is lifted, and the clamping rod 74 extends into the recess and clamps the indexing ratchet.

[0062] It should be noted that the prior art portion of the protection scope of this invention is not limited to the embodiments given in this application. All prior art that does not contradict the solution of this invention, including but not limited to prior patent documents, prior publications, prior public uses, etc., can be included in the protection scope of this invention.

[0063] Furthermore, the combination of the technical features in this case is not limited to the combination methods described in the claims of this case or the combination methods described in the specific embodiments. All technical features described in this case can be freely combined or combined in any way, unless they contradict each other.

[0064] It should also be noted that the embodiments listed above are merely specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and similar changes or modifications made thereto are those that can be directly derived or easily conceived by those skilled in the art from the content disclosed in the present invention, and should all fall within the protection scope of the present invention.

Claims

1. A milling system, comprising a bed and a motor, characterized in that: The motor's output shaft drives the first and second transmission mechanisms. The output of the first transmission mechanism drives the horizontal and vertical movement of the worktable, while the output of the second transmission mechanism drives the milling cutter. The workpiece is mounted on the worktable, and during milling, the workpiece is clamped by the vertical movement of the worktable and the gravity of the clamping mechanism. The first transmission mechanism includes a first transmission wheel, a first transmission belt, a second transmission wheel, a first transmission shaft, a third transmission wheel, a second transmission belt, a fourth transmission wheel, a second transmission shaft, a cam, and a connecting rod. The first transmission wheel is mounted on the motor output shaft. The first transmission wheel and the second transmission wheel form a closed synchronous belt transmission through the first transmission belt. The second transmission wheel and the third transmission wheel are coaxially driven through the first transmission shaft. The third transmission wheel and the fourth transmission wheel form a closed synchronous belt transmission through the second transmission belt. The fourth transmission wheel is coaxially connected to the cam through the second transmission shaft. A connecting rod is mounted on the circumference of the cam. When the cam rotates, the outer surface of the cam drives the worktable to move horizontally, and the connecting rod drives the worktable to move vertically. The worktable includes a horizontally movable first worktable and a vertically movable second worktable, and a first guide rail pair that can slide horizontally is formed between the contact surfaces of the first worktable and the second worktable. The first worktable is located on the second worktable. A first spring assembly is provided on the horizontal side of the first worktable. A moving rod is also provided on the first worktable. When the cam rotates, the outer side of the cam contacts the moving rod and drives the first worktable to move horizontally. A balance bar is provided on the front side of the second worktable. The connecting rod is connected to the balance bar at the end away from the cam. When the cam rotates, the connecting rod drives the first worktable and the second worktable to move up and down. The clamping mechanism includes a clamping block and a clamping fork; the workpiece is a shaft, which is mounted on the first worktable. The clamping fork has a head and a rod. The head of the clamping fork is located on the outside of the shaft. The top of the clamping block is located above the crossbeam of the bed. A second horizontal guide rail pair is formed between the bottom of the clamping block and the rod of the clamping fork. The milling system also includes an indexing ratchet, a locating pin on the first worktable, the indexing ratchet located outside the locating pin, the bottom of the shaft connected to the center hole of the indexing ratchet and located above the locating pin, the shaft, the indexing ratchet and the locating pin are all arranged coaxially; several recesses are evenly distributed around the circumference of the top surface of the indexing ratchet, the clamping mechanism also includes a clamping rod, the top of the clamping rod connected to the head of the clamping fork, the bottom of the clamping rod matching the recesses, when the shaft is clamped, the bottom of the clamping rod extends into the recesses.

2. The milling system as described in claim 1, characterized in that: The milling system is also equipped with a wire rope, a pulley, and a counterweight; one end of the wire rope is connected to the balance bar, the wire rope extends downward after passing over the pulley above the balance bar, and the other end of the wire rope is equipped with a counterweight.

3. The milling system as described in claim 1, characterized in that: The second transmission mechanism includes a fifth transmission wheel, a third transmission belt, a sixth transmission wheel, and a third transmission shaft; the fifth transmission wheel is mounted on the motor output shaft, and the fifth transmission wheel and the sixth transmission wheel form a closed synchronous belt transmission through the third transmission belt, and the sixth transmission wheel is coaxially driven with the milling cutter through the third transmission shaft.

4. The milling system as described in claim 1, characterized in that: The milling system also includes a ratchet lever and a second spring assembly. One end of the ratchet lever is provided with a second spring assembly. When the shaft is milled in a later position, the other end of the ratchet lever moves one tooth of the indexing ratchet in one direction, thereby causing the shaft to rotate synchronously by a machining angle.

5. The milling system as described in claim 4, characterized in that: It also includes a guide rod, which is arranged vertically and passes through a hole in the rod portion of the clamping fork.

6. The milling system as described in claim 5, characterized in that, The clamping block is a T-shaped block, with the top of the T-shaped block located above the crossbeam of the bed, and the bottom of the T-shaped block forming the second guide rail pair between the rod of the clamping fork.

7. The milling system as described in claim 6, characterized in that, The first guide rail pair is a first dovetail groove guide rail pair, and the second guide rail pair is a second dovetail groove guide rail pair; a vertical bed guide rail is provided on the bed, and the second worktable can slide up and down along the bed guide rail.

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