Arc milling machine for machining arc opening of workpiece

Abstract

The utility model discloses an arc milling machine for processing an arc opening of a workpiece, which relates to the technical field of arc milling machines and particularly comprises a machine base, a machine body is arranged on the rear side of the top of the machine base, an arc milling machine head is connected onto the machine body through a three-axis moving mechanism, a control panel is arranged on the front side of the top of the machine body, and a tool clamp is arranged at the top end of an inner cavity of the machine body. According to the arc milling machine for machining the arc opening of the workpiece, through the arrangement of the three-axis moving structure and the rotating shaft, four-axis machining of the workpiece can be achieved, the arc milling machine can adapt to various products, and the adaptability of the arc milling machine is improved; through the arrangement of the tool clamp, the tool clamp can adapt to various workpieces only by replacing a positioning groove and changing the position of a positioning block, and the adjustment efficiency of the tool clamp and the use convenience of the tool clamp are improved; and through the arrangement of a rotary clamping air cylinder, the position of a clamping block can be changed, and various products can be conveniently clamped and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of arc milling machines, in particular to an arc milling machine for processing arc edges of workpieces. Background Art

[0002] The bicycle front fork is located in the front part of the overall structure of the bicycle. The upper end of the bicycle front fork is connected to the handlebar, the frame component cooperates with the front tube, and the lower end cooperates with the front axle component to form the guide system of the bicycle. During the processing of the bicycle front fork, the two fork legs on the bicycle front fork need to be milled by a milling machine so that the two fork legs fit perfectly with the bicycle fork crown, and finally fixed by welding. In the prior art, some schemes about bicycle front fork milling machines are disclosed, such as a bicycle front fork milling machine disclosed in the authorized patent with application number CN202223424316.2, including a machine body, both sides of the upper end of the machine body are fixed with vertical plates, the upper ends of the opposite sides of the two vertical plates are commonly fixed with a top plate, and a clamping mechanism is provided on one side of the lower end of the top plate, and a pushing mechanism is provided on one side of one of the vertical plates, and a bearing frame is provided on the pushing mechanism, and a power mechanism and other components are provided in the bearing frame.

[0003] When the above scheme is in use, the milling angle is fixed and cannot adapt to various needs; the feed amount of the milling roller is controlled by the electric telescopic rod, so that the milling roller can only move in the horizontal direction, and the milling position of the workpiece is fixed, which affects its practicality, and when clamping workpieces of different sizes, the clamping mechanism needs to be replaced completely, which is more troublesome; based on this, the present application proposes a milling machine for workpiece arc processing. Utility Model Content

[0004] The utility model provides an arc milling machine for processing arc edges of workpieces, which solves the problems proposed in the above background technology that the arc milling angle and arc milling height are fixed, cannot adapt to various needs, and affect its practicability. When clamping workpieces of different sizes, the clamping mechanisms need to be completely replaced, which is quite troublesome.

[0005] The utility model provides the following technical solution: an arc milling machine for processing arc edges of workpieces, comprising a machine base, a machine body is provided on the rear side of the top of the machine base, an arc milling machine head is connected to the machine body through a three-axis moving mechanism, a control panel is provided on the front side of the top of the machine body, a tooling fixture is provided on the top of the inner cavity of the machine body, the tooling fixture comprises a rotating shaft, a rotating motor and a locking cylinder, the rotating shaft is movably connected to the machine base through a fixing plate 1 and a fixing plate 2, the outer ring at one end of the rotating shaft is fixedly connected to a driven plate 1, the outer ring at the other end of the rotating shaft is fixed to a driven plate 2, and the driven plate 2 A support plate is fixed on the top of both driven plate one and follower plate one, and the top of the support plate is connected with a clamping block through a rotating clamping cylinder, the two support plates are connected through a workbench, a connecting plate is fixed to the bottom of the workbench, a workpiece positioning block is fixed to the top of the other end of the connecting plate, a positioning groove matched with the workpiece is fixed on the side of the workpiece positioning block close to the workbench, the other end of the driven plate two is provided with a rotating groove, a connecting rod is movably connected in the inner cavity of the rotating groove, one end of the connecting rod is movably connected to the output end of the locking cylinder, and the other end of the connecting rod is fixedly connected to a friction plate.

[0006] Preferably, the rotating motor and the locking cylinder are both fixedly connected to a fixing plate, and the output shaft end of the rotating motor is fixedly connected to the end of the rotating shaft.

[0007] Preferably, a workpiece positioning block is fixed to one end of the connecting plate away from the arc milling machine head, and fixing holes are evenly arranged on the one end of the connecting plate away from the arc milling machine head, and through holes matching the fixing holes are evenly arranged on the workpiece positioning block.

[0008] Preferably, the three-axis moving mechanism adopts a ball screw for transmission.

[0009] Preferably, the rotation groove is arc-shaped, and the distance between the rotation groove and the rotation axis is the same as the inner diameter of the rotation groove.

[0010] Preferably, the outer diameter of the friction plate is greater than the width of the rotating groove, and a friction pad is fixed to one side of the driven plate 2 close to the friction plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The arc milling machine used for arc processing of the workpiece can realize four-axis processing of the workpiece through the setting of the three-axis moving structure and the rotating axis, so that the arc milling machine can adapt to a variety of products, improve the adaptability of the arc milling machine, and the arc milling head is driven by a ball screw when moving, and the feed amount of the arc milling head can be accurately controlled to improve the processing accuracy of the product; through the setting of the locking cylinder and the friction plate, the position of the tooling fixture can be fixed, which improves the stability of the workpiece during arc milling and ensures the processing accuracy of the workpiece.

[0013] 2. The arc milling machine for processing the arc edge of the workpiece can adapt to a variety of workpieces through the setting of the fixture. The fixture only needs to replace the positioning groove and change the position of the positioning block, so that it can improve the adjustment efficiency of the fixture and the convenience of using the fixture; through the setting of the rotating clamping cylinder, the position of the clamping block can be changed, so that the fixture can clamp and fix a variety of products, thereby improving the adaptability of the fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of the structure of the utility model;

[0015] Figure 2 The utility model structure Figure 1 Schematic diagram on the right;

[0016] Figure 3 The utility model structure Figure 2 Schematic cross-section;

[0017] Figure 4 This is a schematic diagram of the structural fixture of the utility model;

[0018] Figure 5 The utility model structure Figure 4 Schematic diagram looking up;

[0019] Figure 6 This is a schematic diagram of the connection between the clamping cylinder and the friction plate of the utility model structure.

[0020] In the figure: 1. machine base; 2. machine body; 3. milling machine head; 4. fixture; 5. control panel; 6. locking cylinder; 7. rotating motor; 8. fixed plate 1; 9. rotating shaft; 10. driven plate 1; 11. supporting plate; 12. rotating clamping cylinder; 13. clamping block; 14. connecting plate; 15. workbench; 16. workpiece positioning block; 17. fixed plate 2; 18. driven plate 2; 19. rotating groove; 20. friction plate; 21. positioning groove; 22. connecting rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides an arc milling machine for processing arc edges of workpieces, comprising a machine base 1, a machine body 2 is arranged on the rear side of the top of the machine base 1, an arc milling machine head 3 is connected to the machine body 2 through a three-axis moving mechanism, under the action of the three-axis moving mechanism, the arc milling machine head 3 can move in the directions where the X-axis, the Y-axis and the Z-axis are located, so that when the arc milling machine is in use, the arc milling position and the arc milling height can be changed, so that the arc milling machine can adapt to a variety of products, thereby improving the adaptability of the arc milling machine.

[0023] The three-axis moving structure adopts a ball screw for transmission. In some embodiments of the present application, the three-axis moving structure includes a first ball screw in the X-axis direction, a second ball screw in the Y-axis direction and a third ball screw in the Z-axis direction. The first ball screw is movably connected to the fuselage 2, and the outer ring of the first ball screw is threadedly connected with a first ball nut. A first rotating motor is fixed on the fuselage 2, and the end of the output shaft of the first rotating motor is fixedly connected to the end of the first ball screw through a reducer. When the first rotating motor is working, it can drive the first ball screw to rotate. When the first ball screw rotates, the first ball nut threadedly connected thereto can move in the direction where the first ball screw is located, thereby realizing the movement of the arc milling head 3 in the X-axis direction; the second ball screw is movably connected to the first ball nut, and a second rotating motor is fixed on the first ball nut. The end of the output shaft of the second rotating motor is fixedly connected to the end of the second ball screw through a reducer. When the second rotating motor is working, the second rotating motor can drive the second ball screw to rotate. The outer ring of the second ball screw is threadedly connected to the second ball nut, and the third ball screw is movably connected to the second ball nut. The rotation of the second rotating motor can make the second ball nut move in the direction of the second ball screw, thereby realizing the movement of the arc milling head 3 in the Y-axis direction; the outer ring of the second ball nut is fixed with a third rotating motor, and the third rotating motor is fixedly connected to the end of the third ball screw through a reducer, and the outer ring of the third ball screw is threadedly connected to the third ball nut, and the third ball nut is fixedly connected to the arc milling head 3. Under the action of the third rotating motor, the arc milling head 3 can realize movement in the Z-axis direction.

[0024] It can be seen from the above description that the arc milling machine head 3 controls the arc milling feed amount through a three-axis moving mechanism, which can achieve accurate positioning and improve processing accuracy.

[0025] A control panel 5 is provided on the front side of the top of the machine body 2 , and a worker controls the arc milling machine through the control panel 5 .

[0026] A fixture 4 is provided at the top of the inner cavity of the fuselage 2, and the fixture 4 includes a rotating shaft 9, a rotating motor 7, a locking cylinder 6, a fixing plate 1 8 and a fixing plate 2 17. The fixing plate 1 8 is fixedly connected to one side of the top of the inner cavity of the fuselage 2, and the fixing plate 2 17 is fixedly connected to the other side of the top of the inner cavity of the fuselage 2. The fixing plate 1 8 and the fixing plate 2 17 are connected through the rotating shaft 9, and the rotating shaft 9 and the fixing plate 1 8 and the fixing plate 2 17 are all in a state of active connection. The outer ring at one end of the rotating shaft 9 is fixedly connected to the driven plate 10, and the outer ring at the other end of the rotating shaft 9 is fixedly connected to the driven plate 2 18. In some embodiments of the present application, the fixing plate 1 8 is located at one end of the rotating shaft 9 close to the driven plate 2 18. In this embodiment, the rotating motor 7 and the locking cylinder 6 are both fixedly connected to the fixing plate 1 8, and the end of the output shaft of the rotating motor 7 is fixedly connected to the end of the rotating shaft 9 through a reducer. When the rotating motor 7 rotates, it can drive the rotating shaft 9 fixedly connected thereto to rotate.

[0027] The end of the driven plate 2 18 away from the rotating shaft 9 is provided with an arc-shaped rotating groove 19, and a connecting rod 22 is movably connected in the inner cavity of the rotating groove 19. One end of the connecting rod 22 is movably connected to the output end of the locking cylinder 6. The extension and contraction of the locking cylinder 6 can change the position of the connecting rod 22 in the horizontal direction, and when the driven plate 2 18 rotates, the connecting rod 22 and the rotating groove 19 are in a state of rolling friction, reducing the wear of the connecting rod 22. The other end of the connecting rod 22 is fixedly connected with a friction plate 20. Through the setting of the connecting rod 22, the connecting rod 22 can limit the rotation angle of the rotating shaft 9, and under the action of the locking cylinder 6, the friction plate 20 can be closely fitted or separated from the driven plate 2 18. When the friction plate 20 is separated from the driven plate 2 18, the driven plate 2 18 can rotate. When the friction plate 20 is closely fitted with the driven plate 2 18, the position of the driven plate 2 18 is fixed, thereby fixing the position of the rotating shaft 9, and the rotating shaft 9 is locked.

[0028] The distance between the rotating groove 19 and the rotating shaft 9 is equal to the inner diameter of the rotating groove 19 .

[0029] The outer diameter of the friction plate 20 is greater than the width of the rotating groove 19, so that the friction plate 20 can contact the driven plate 18. The size of the friction plate 20 can be designed according to needs and is not limited here. A friction pad is fixed to the side of the driven plate 18 close to the friction plate 20. The material of the friction pad can be rubber. Through the setting of the friction pad, the friction force between the friction plate 20 and the driven plate 18 is increased, while the impact force when the friction plate 20 and the driven plate 18 contact is reduced.

[0030] A support plate 11 is fixed to the top of both the driven plate 2 18 and the driven plate 1 10. The top of the support plate 11 is connected to a clamping block 13 via a rotating clamping cylinder 12. The two support plates 11 are connected via a workbench 15. When the arc milling machine is in use, the workpiece placed on the workbench 15 can be clamped by the clamping block 13, and by setting the rotating clamping cylinder 12, the position and height of the clamping block 13 can be adjusted, so that the clamping block 13 can clamp a variety of workpieces, thereby improving the adaptability of the arc milling machine.

[0031] A connecting plate 14 is fixed to the bottom of the workbench 15, a workpiece positioning block 16 is fixed to the top of the end of the connecting plate 14 away from the arc milling machine head 3, and a positioning groove 21 adapted to the workpiece is fixed to the side of the workpiece positioning block 16 close to the workbench 15. The workpiece positioning block 16 and the positioning groove 21 are arranged to position the workpiece, so that the positions of the same batch of workpieces on the workbench 15 can be kept consistent, thereby ensuring the machining accuracy of the workpiece. The end of the connecting plate 14 away from the arc milling machine head 3 is evenly provided with fixing holes, and the workpiece positioning block 16 is evenly provided with through holes adapted to the fixing holes. The arrangement of the fixing holes and the through holes facilitates the adjustment of the position of the workpiece positioning block 16.

[0032] In some embodiments of the present application, the milling machine head 3 has the same principle as the milling power head disclosed in the authorized patent with application number CN202020914528.0, which will not be repeated here.

[0033] The electrical components involved in this application are all prior art, and technicians in this field are familiar with their connection methods. Through these technicians, all the electrical components in this application are connected to their compatible power supplies through wires, and according to the actual situation, a suitable controller is selected to meet the control requirements. The specific connection and control sequence are described below. The electrical connection is completed in a sequential working order, and the detailed connection means are well known in the art. The following mainly introduces the working principle and process, and no further explanation of the electrical control is given.

[0034] To sum up: when the arc milling machine for arc mouth processing of the workpiece is used, after the bicycle front fork workpiece to be processed is placed on the workbench 15, the positioning groove 21 is used to position the workpiece so that the position of the workpiece on the workbench 15 is fixed, and the rotating clamping cylinder 12 is used to drive the clamping block 13 to move so that the clamping block 13 can clamp the workpiece. After the workpiece is clamped, the rotation angle of the workpiece is adjusted according to demand, and the rotating motor 7 is started. The rotating motor 7 drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the workbench 15 to rotate, and the rotation angle of the workpiece changes. After the rotation angle of the workpiece is appropriate, the locking cylinder 6 contracts, and the locking cylinder 6 drives the friction plate 20 to fit tightly with the driven plate 18, so that the position of the workpiece is locked, thereby improving the stability of the workpiece during processing, and the three-axis moving mechanism is used to drive the arc milling head 3 to move, and the arc milling head 3 can realize the arc milling operation on the workpiece.

[0035] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A milling machine for machining arc edges of workpieces, comprising a machine base (1), characterized in that: A machine body (2) is provided on the rear side of the top of the machine base (1), and a milling machine head (3) is connected to the machine body (2) via a three-axis moving mechanism. A control panel (5) is provided on the front side of the top of the machine body (2). A tooling fixture (4) is provided at the top of the inner cavity of the machine body (2). The tooling fixture (4) comprises a rotating shaft (9), a rotating motor (7) and a locking cylinder (6). The rotating shaft (9) is movably connected to the machine base (1) via a fixing plate 1 (8) and a fixing plate 2 (17). The outer ring of one end of the rotating shaft (9) is fixedly connected to a driven plate 1 (10), and the outer ring of the other end of the rotating shaft (9) is fixed to a driven plate 2 (18). The tops of both the driven plate 2 (18) and the driven plate 1 (10) are fixed with a support plate (11). The top of the support plate (11) is connected to a clamping block (13) via a rotating clamping cylinder (12), the two support plates (11) are connected via a workbench (15), a connecting plate (14) is fixed to the bottom of the workbench (15), a workpiece positioning block (16) is fixed to the top of the other end of the connecting plate (14), a positioning groove (21) adapted to the workpiece is fixed to the side of the workpiece positioning block (16) close to the workbench (15), the other end of the driven plate (18) is provided with a rotating groove (19), a connecting rod (22) is movably connected to the inner cavity of the rotating groove (19), one end of the connecting rod (22) is movably connected to the output end of the locking cylinder (6), and the other end of the connecting rod (22) is fixedly connected to a friction plate (20).

2. The arc milling machine for workpiece arc processing according to claim 1, characterized in that: The rotating motor (7) and the locking cylinder (6) are both fixedly connected to the fixing plate (8), and the output shaft end of the rotating motor (7) is fixedly connected to the end of the rotating shaft (9).

3. The arc milling machine for workpiece arc processing according to claim 1, characterized in that: A workpiece positioning block (16) is fixed to one end of the connecting plate (14) away from the arc milling machine head (3), and fixing holes are evenly arranged on the end of the connecting plate (14) away from the arc milling machine head (3), and through holes matching the fixing holes are evenly arranged on the workpiece positioning block (16).

4. The arc milling machine for workpiece arc processing according to claim 1, characterized in that: The outer diameter of the friction plate (20) is greater than the width of the rotating groove (19), and a friction pad is fixed on one side of the driven plate 2 (18) close to the friction plate (20).

5. The arc milling machine for workpiece arc processing according to claim 1, characterized in that: The three-axis moving mechanism adopts a ball screw for transmission.

6. The arc milling machine for workpiece arc processing according to claim 1, characterized in that: The rotating groove (19) is arc-shaped, and the distance between the rotating groove (19) and the rotating axis (9) is the same as the inner diameter of the rotating groove (19).

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