Machine body base of numerical control milling machine

Abstract

The utility model provides a machine body base of a numerical control milling machine. The machine body base comprises a base body, an overturning assembly is arranged on the inner side of the base body, and a moving assembly is arranged at the top of the base body; the overturning assembly comprises a U-shaped frame which is arranged on the inner side of the base in a front-back rotatable mirror image mode. According to the machine body base of the numerical control milling machine, the rotating lead screw is driven to rotate through rotation of the output end of the first motor, then the two fixing blocks are driven to move relatively, a workpiece is fixed through the two fixing blocks, when the workpiece needs to be overturned, the U-shaped frame on the rear side is driven to rotate through rotation of the output end of the second motor, and the workpiece is overturned. And through the arrangement of a pointer and a dial on the front face of the base, people can visually know the change of the angle of the overturning frame, the structure is simple and practical, automatic overturning of the workpiece can be conveniently achieved, and the use range of the base is increased.

Description

Technical Field

[0001] The utility model relates to the field of CNC milling machines, in particular to a bed base of a CNC milling machine. Background Technique

[0002] A CNC milling machine integrates a digital control system on an ordinary milling machine and can perform milling operations more precisely under the control of program codes. It has the characteristics of strong adaptability and good flexibility in part processing, and can process parts with particularly complex contour shapes or difficult-to-control dimensions, such as die parts, shell parts, etc. In addition, CNC milling machines can also process parts that cannot be processed or are difficult to process on ordinary machine tools, such as complex curve parts described by mathematical models and three-dimensional space curved surface parts. It has high machining accuracy, stable and reliable machining quality, can avoid operator errors, and has a high degree of production automation, which can reduce the labor intensity of operators.

[0003] The working principle of a CNC milling machine is mainly that the computer in the numerical control device processes a series of information recorded in the form of digital and character codes, and then issues commands to the feed and other actuators of the machine tool. The actuators then automatically control various actions required for processing according to the commands, such as the movement trajectory, displacement, and speed of the tool relative to the workpiece, so as to complete the machining of the workpiece.

[0004] With the continuous development of society, CNC milling machines have also developed rapidly. CNC milling machines can be divided into those with and without tools. Due to the gradually increasing requirements for numerical control technology, corresponding higher performance indicators have been put forward for the numerical control system, machine tool structure, and servo performance in CNC milling machines. Application No.: CN202022983332.X discloses a CNC milling machine with a stable base, which not only realizes the easy movement of the CNC milling machine, but also realizes the stable effect of the CNC milling machine and the protection function of the CNC milling machine. However, when this device is in use, some workpieces need to be processed on multiple surfaces, and this device cannot realize the automatic flipping of the workpieces to be processed. This requires manual operation to pause the machine during processing and flip the workpiece and then refix it, which undoubtedly reduces the functionality and adaptability of the base.

[0005] Therefore, it is necessary to provide a bed base of a CNC milling machine to solve the above technical problems. Summary of the Utility Model

[0006] The utility model provides a bed base of a CNC milling machine, which solves the problem that in the related art, when the existing bed bases of some CNC milling machines are in use, it is not convenient to flip the workpieces that need to be flipped for processing.

[0007] To solve the above technical problems, a bed base of a numerical control milling machine provided by the utility model includes: a base, a flipping component is arranged inside the base, and a moving component is arranged on the top of the base;

[0008] The flipping component includes U-shaped frames that are mirror-symmetrically arranged inside the base and can rotate back and forth. On one side of the opposite sides of the U-shaped frames, there are flipping frames. Inside the flipping frames, there are limit slide bars that can rotate longitudinally. On the circumferential surface of the limit slide bars, there are two fixing blocks that can slide back and forth along the length direction thereof;

[0009] The moving component includes chutes arranged on the left and right sides of the base. Inside both of the chutes, there are fixing frames that can slide back and forth. On the top of the opposite sides of the two fixing frames, there is a numerical control milling machine. Inside both of the chutes, there are telescopic cylinders.

[0010] Preferably, inside the flipping frame and on the left side of the limit slide bar, there is a rotating lead screw that can rotate longitudinally. The circumferential surface of the rotating lead screw is threadedly connected to the inside of the two fixing blocks. The front end of the rotating lead screw penetrates the inside of the flipping frame and extends to its front surface. On the left side of the front surface of the flipping frame, there is a first motor for driving the rotating lead screw to rotate.

[0011] Preferably, the flipping component further includes a second motor arranged on the back surface of the base for driving the U-shaped frame to rotate. The rear end of the rear U-shaped frame penetrates the inside of the base and extends to its back surface. The output end on the back surface of the second motor is belt-connected to the rear end of the rear U-shaped frame.

[0012] Preferably, on the top of both of the fixing blocks, there are pressing rods that can rotate vertically. The bottom ends of both of the pressing rods penetrate the top of the corresponding fixing blocks and extend to their inside. At the bottom ends of both of the pressing rods, there are pressing plates.

[0013] Preferably, on the telescopic ends on the front surface of both of the telescopic cylinders, there are sliding blocks. On the front surface of both of the sliding blocks, there are sliding rods. The circumferential surfaces of both of the sliding rods are respectively slidably connected to the inside of the two fixing frames. On the circumferential surfaces of both of the sliding rods and respectively corresponding to the back surfaces of the two fixing frames, there are first shock-absorbing springs.

[0014] Preferably, on the front ends of both of the sliding rods, there are push-pull columns. The circumferential surfaces of both of the push-pull columns are respectively slidably connected to the inside of the two fixing frames. Inside the two fixing frames and respectively corresponding to the front ends of the two push-pull columns, there are second shock-absorbing springs.

[0015] Preferably, the front end of the front U-shaped frame penetrates through the inner side of the base and extends to its front, a pointer is provided at the front end of the front U-shaped frame, and a scale dial is provided on the front of the base.

[0016] Compared with the related art, a bed base of a numerical control milling machine provided by the present invention has the following

[0017] Beneficial effects:

[0018] The present invention provides a bed base of a numerical control milling machine. The rotation of the output end of the first motor drives the rotation of the rotating lead screw, and then drives the relative movement of the two fixing blocks, so that the two fixing blocks fix the workpiece. When the workpiece needs to be flipped, the rotation of the output end of the second motor drives the rotation of the rear U-shaped frame, and then drives the flipping of the entire workpiece. And through the setting of the pointer and the scale dial on the front of the base, people can intuitively understand the change of the angle of the flipping frame. The structure is simple and practical, facilitating the automatic flipping of the workpiece and increasing the usage surface of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a preferred embodiment of a bed base of a numerical control milling machine provided by the present invention;

[0020] Figure 2 is Figure 1 a schematic structural diagram of the rear view of the shown base;

[0021] Figure 3 is Figure 1 a schematic structural diagram of a partial structure of the shown flipping frame;

[0022] Figure 4 is Figure 2 a schematic structural diagram of a partial structure of the shown sliding block.

[0023] Reference numerals in the drawings: 1, base; 2, flipping assembly; 21, U-shaped frame; 22, flipping frame; 23, limiting slide bar; 24, fixing block; 25, rotating lead screw; 26, first motor; 27, second motor; 28, pressing rod; 29, pressing plate; 3, moving assembly; 31, chute; 32, fixing frame; 33, numerical control milling machine; 34, telescopic cylinder; 35, sliding block; 36, sliding rod; 37, first shock-absorbing spring; 38, push-pull column; 39, second shock-absorbing spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present invention will be further described below in conjunction with the drawings and embodiments.

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , wherein Figure 1Schematic diagram of a preferred embodiment of the bed base of a numerically controlled milling machine provided by the present utility model; Figure 2 is Figure 1 schematic diagram of the rear view of the shown base; Figure 3 is Figure 1 schematic diagram of a partial structure of the shown turning frame; Figure 4 is Figure 2 schematic diagram of a partial structure of the shown sliding block. A bed base of a numerically controlled milling machine includes: a base 1, a turning component 2 is arranged inside the base 1, and a moving component 3 is arranged on the top of the base 1;

[0026] The turning component 2 includes U-shaped frames 21 which are arranged in a mirror image and can rotate back and forth inside the base 1, a turning frame 22 is arranged on the opposite sides of the U-shaped frames 21, a limiting slide bar 23 is longitudinally rotatably arranged inside the turning frame 22, and two fixing blocks 24 are arranged on the circumferential side of the limiting slide bar 23 and can slide back and forth along its length direction;

[0027] After the workpiece is fixed, the rotation of the output end of the second motor 27 drives the rotation of the rear U-shaped frame 21. Since the small pulley drives the large pulley, which is a speed-reducing and force-increasing movement, the turning frame 22 will be more stable during the rotation process. And through the setting of the pointer and scale on the front of the base 1, people can intuitively understand the change of the angle of the turning frame 22.

[0028] The moving component 3 includes sliding grooves 31 arranged on the left and right sides of the base 1. Fixing frames 32 can slide back and forth inside the two sliding grooves 31. A numerically controlled milling machine 33 is arranged on the top of the opposite sides of the two fixing frames 32, and telescopic cylinders 34 are arranged inside the two sliding grooves 31.

[0029] Through the setting of the movable numerically controlled milling machine 33 in cooperation with the fixed workpiece, the purpose of a more flexible base 1 is achieved. The synchronous extension of the two telescopic cylinders 34 drives the same-direction movement of the two fixing frames 32, and further drives the movement of the numerically controlled milling machine 33 body.

[0030] A rotating lead screw 25 is longitudinally rotatably arranged inside the turning frame 22 and on the left side of the limiting slide bar 23. The circumferential side of the rotating lead screw 25 is threadedly connected with the inside of the two fixing blocks 24. The front end of the rotating lead screw 25 penetrates through the inside of the turning frame 22 and extends to its front. A first motor 26 for driving the rotation of the rotating lead screw 25 is arranged on the left side of the front of the turning frame 22.

[0031] The rotation of the output end of the first motor 26 drives the rotation of the rotating lead screw 25, and further drives the relative or separating movement of the two fixing blocks 24. After the workpiece is placed on the opposite sides of the two fixing blocks 24, the workpiece is clamped by reversing the rotating lead screw 25.

[0032] The flipping component 2 further includes a second motor 27 disposed on the back surface of the base 1 for driving the U-shaped frame 21 to rotate. The rear end of the rear U-shaped frame 21 penetrates through the inner side of the base 1 and extends to its back surface, and the output end on the back surface of the second motor 27 is belt-connected to the rear end of the rear U-shaped frame 21.

[0033] On the top of both fixing blocks 24, pressing rods 28 are rotatably arranged vertically. The bottom ends of both pressing rods 28 penetrate through the top of the corresponding fixing frame 24 and extend to its inner side, and pressing plates 29 are arranged at the bottom ends of both pressing rods 28.

[0034] After the workpiece is initially fixed, by rotating the two pressing rods 28 to drive the pressing plates 29 at their bottoms to move downward, the height of the workpiece is limited, preventing it from falling during the rotation process.

[0035] Sliding blocks 35 are arranged at the telescopic ends on the front surfaces of the two telescopic cylinders 34. Sliding rods 36 are arranged on the front surfaces of the two sliding blocks 35. The circumferential sides of the two sliding rods 36 are respectively slidably connected to the inner sides of the two fixing frames 32, and first shock-absorbing springs 37 are arranged on the circumferential sides of the two sliding rods 36 and respectively located on the back surfaces of the two fixing frames 32.

[0036] When the CNC milling machine 33 is working, vibration is inevitable. To avoid the adverse effects brought by the vibration, through the arrangement of the two sliding rods 36 and the two first shock-absorbing springs 37, when the fixing frame 32 sways left and right, it will be offset by the first shock-absorbing springs 37 and the second shock-absorbing springs 39.

[0037] Push-pull columns 38 are arranged at the front ends of the two sliding rods 36. The circumferential sides of the two push-pull columns 38 are respectively slidably connected to the inner sides of the two fixing frames 32, and second shock-absorbing springs 39 are arranged inside the two fixing blocks 32 and respectively located at the front ends of the two push-pull columns 38.

[0038] Through the arrangement of the two push-pull columns 38, when the output end of the telescopic cylinder 34 extends or retracts, the push-pull column 38 will slide left and right inside the fixing frame 32, and drive the fixing frame 32 to move left and right when sliding to the inner limit.

[0039] The front end of the front U-shaped frame 21 penetrates through the inner side of the base 1 and extends to its front surface. A pointer is arranged at the front end of the front U-shaped frame 21, and a scale is arranged on the front surface of the base 1.

[0040] The working principle of the bed base of a CNC milling machine provided by the present utility model is as follows:

[0041] The first step: When in use, place the workpiece that may need to be flipped for processing on one side opposite to the two fixed blocks 24. Drive the rotation of the rotating lead screw 25 through the rotation of the output end of the first motor 26, and then drive the relative movement of the two fixed blocks 24, so that the two fixed blocks 24 fix the workpiece. Drive the pressing plate 29 at the bottom of the two pressure rods 28 to move downward by rotation, thereby limiting the height of the workpiece and preventing it from falling during rotation;

[0042] The second step: When it is necessary to flip the workpiece, drive the rotation of the rear U-shaped frame 21 through the rotation of the output end of the second motor 27. Since the small pulley drives the large pulley, which is a speed-reducing and force-increasing movement, the flipping frame 22 will be more stable during rotation. And through the setting of the front pointer and scale of the base 1, people can intuitively understand the change in the angle of the flipping frame 22;

[0043] The third step: Through the setting of the two sliding rods 36 and the two first damping springs 37, when the fixed frame 32 sways left and right, it will be offset by the first damping springs 37 and the second damping springs 39. Through the setting of the two push-pull columns 38, when the output end of the telescopic cylinder 34 extends or retracts, the push-pull columns 38 will slide left and right inside the fixed frame 32, and drive the fixed frame 32 to move left and right when sliding to the inner limit.

[0044] Compared with the related technology, a bed base of a numerical control milling machine provided by the present utility model has the following

[0045] Beneficial effects:

[0046] Drive the rotation of the rotating lead screw 25 through the rotation of the output end of the first motor 26, and then drive the relative movement of the two fixed blocks 24, so that the two fixed blocks 24 fix the workpiece. When it is necessary to flip the workpiece, drive the rotation of the rear U-shaped frame 21 through the rotation of the output end of the second motor 27, and then drive the flipping of the entire workpiece. And through the setting of the front pointer and scale of the base 1, people can intuitively understand the change in the angle of the flipping frame 22. The structure is simple and practical, facilitating the automatic flipping of the workpiece and increasing the usage surface of the base 1.

[0047] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, are similarly included in the patent protection scope of the present utility model.

Claims

1. A bed base of a CNC milling machine, characterized in that: include: A base (1), wherein a turning assembly (2) is arranged on the inner side of the base (1), and a moving assembly (3) is arranged on the top of the base (1); The flip assembly (2) comprises a U-shaped frame (21) which is arranged on the inner side of the base (1) in a mirror image and can rotate forward and backward, and a flip frame (22) is arranged on the opposite side of the U-shaped frame (21), and a limit slide bar (23) is arranged inside the flip frame (22) so as to be rotatable in the longitudinal direction, and two fixing blocks (24) are arranged on the peripheral side surface of the limit slide bar (23) so as to be slidable forward and backward along the length direction thereof; The moving assembly (3) comprises slide grooves (31) arranged on the left and right sides of the base (1), and fixed frames (32) are arranged inside the two slide grooves (31) so as to be able to slide forward and backward, and a numerically controlled milling machine (33) is arranged on the top of the opposite side of the two fixed frames (32), and a telescopic cylinder (34) is arranged inside the two slide grooves (31).

2. The bed base of a CNC milling machine according to claim 1, characterized in that: A rotating screw rod (25) is longitudinally rotatably arranged inside the flip frame (22) and on the left side of the limiting slide rod (23); the peripheral side surface of the rotating screw rod (25) is connected with the internal threads of the two fixed blocks (24); the front end of the rotating screw rod (25) passes through the interior of the flip frame (22) and extends to the front side thereof; and a first motor (26) for driving the rotating screw rod (25) to rotate is arranged on the left side of the front side of the flip frame (22).

3. The bed base of a CNC milling machine according to claim 1, characterized in that: The flip assembly (2) further comprises a second motor (27) arranged on the back side of the base (1) for driving the U-shaped frame (21) to rotate, the rear end of the rear U-shaped frame (21) passing through the inner side of the base (1) and extending to the back side thereof, and the output end on the back side of the second motor (27) is connected to the rear end belt of the rear end of the U-shaped frame (21) on the rear side.

4. The bed base of a CNC milling machine according to claim 1, characterized in that: The tops of the two fixed blocks (24) are both provided with pressure rods (28) which can be rotated vertically. The bottom ends of the two pressure rods (28) penetrate the tops of the corresponding fixed blocks (24) and extend to the inner side thereof. The bottom ends of the two pressure rods (28) are both provided with pressure plates (29).

5. The bed base of a CNC milling machine according to claim 1, characterized in that: The telescopic ends of the two telescopic cylinders (34) are each provided with a sliding block (35) on the front side, and the two sliding blocks (35) are each provided with a sliding rod (36) on the front side. The peripheral side surfaces of the two sliding rods (36) are respectively slidably connected to the inner sides of the two fixing frames (32). The peripheral side surfaces of the two sliding rods (36) and respectively located on the back sides of the two fixing frames (32) are provided with a first damping spring (37).

6. The bed base of a CNC milling machine according to claim 5, characterized in that: The front ends of the two sliding rods (36) are each provided with a push-pull column (38), the peripheral side surfaces of the two push-pull columns (38) are respectively slidably connected to the inner sides of the two fixing frames (32), and second shock-absorbing springs (39) are respectively provided on the inner sides of the two fixing frames (32) and at the front ends of the two push-pull columns (38).

7. The bed base of a CNC milling machine according to claim 1, characterized in that: The front end of the U-shaped frame (21) on the front side penetrates the inner side of the base (1) and extends to the front side thereof; the front end of the U-shaped frame (21) on the front side is provided with a pointer, and the front side of the base (1) is provided with a dial.

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