Reassembly Z-axis moving device of CNC machining equipment

Abstract

The utility model discloses a CNC processing equipment reinstallation Z-axis moving device, including base frame, Z-axis guide rail, ball screw, first drive device, main shaft and second drive device, the base frame includes back plate and the support part that extends forward from back plate front wall, the support part is provided back plate both sides position, the two support part enclose the location groove, the first drive device is provided with the first drive device, the second drive device is provided with the second drive device, the second drive device is provided with the second drive device, and the second drive device is provided with the second drive device. The two Z-axis guide rails are arranged on the wall face, away from the supporting part, of the back plate in a spaced mode, the two ends of the ball screw are installed on the back plate in a pivoted mode, the ball screw is arranged between the two Z-axis guide rails, the first driving device is arranged at the top of the positioning groove and connected with the ball screw to drive the ball screw to rotate, and the main shaft is arranged at the lower portion of the positioning groove. The second driving device is arranged in the middle of the positioning groove or on the outer side of the supporting part, and the driving device is used for driving the main shaft to rotate. And through a plurality of balance structures, the balance degree can be effectively guaranteed, and then the machining precision of the main shaft cutter during rotation is improved.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining equipment, and in particular to a heavy-duty Z-axis moving device for CNC machining equipment. Background Technology

[0002] Numerical control machine tools, short for numerical control machine tools, are automated machine tools equipped with a program control system. This control system can logically process programs with control codes or other symbolic instructions, decode them, represent them with coded numbers, and input them into the numerical control device via an information carrier. After processing, the numerical control device sends out various control signals to control the machine tool's movements, automatically machining parts according to the shape and dimensions required by the drawings.

[0003] The Z-axis is generally equipped with a cutting tool, so the stability and balance of its rotation are key to the design. However, existing Z-axis, such as Chinese patent 202223213352.4, uses a direct drive between the Z-axis and the cutting tool. Therefore, the balance requirement is relatively small. However, when the spindle load is large, the balance design of the structure will affect the machining accuracy. Utility Model Content

[0004] The main purpose of this invention is to propose a remounted Z-axis moving device for CNC machining equipment, which aims to improve the existing design, achieve Z-axis balance, and thus improve machining accuracy.

[0005] To achieve the above objectives, this utility model proposes a remounted Z-axis movement device for CNC machining equipment, comprising:

[0006] The base frame includes a back plate and support portions extending forward from the front wall of the back plate, the support portions being located on both sides of the back plate.

[0007] The two support parts form a positioning groove;

[0008] Z-axis guide rail (on the horizontal moving frame, it is provided with a Z-axis slider that cooperates with the Z-axis), the Z-axis guide rail is provided in two and spaced apart on the wall surface of the back plate away from the support part;

[0009] The ball screw is pivotally mounted on the back plate at both ends and is located between the two Z-axis guide rails. (The horizontal moving frame is equipped with a fixed screw nut, so in actual movement, the frame is used as the base for overall movement, which further ensures the balance of the spindle.)

[0010] A first driving device is located at the top of the positioning groove and is connected to the ball screw to drive its rotation.

[0011] The main shaft is located at the lower part of the positioning groove;

[0012] The second driving device is located in the middle of the positioning groove or on the outside of the support, and is used to drive the main shaft to rotate.

[0013] In practical design, the base frame structure allows for movement along the Z-axis while maintaining its balance.

[0014] The first balancing structure includes a support section and a Z-axis guide rail;

[0015] The second balancing structure includes ball screws and a first drive device located on both sides of the back plate;

[0016] The third balancing structure includes a main shaft and a support section, as well as the main shaft and the second drive device.

[0017] When the spindle rotates, it generates rotational deflection. By using multiple balancing structures, its balance can be effectively guaranteed, thereby improving the machining accuracy of the spindle tool during rotation. The balancing unit has a simple structure and facilitates the assembly of the mechanical structure, forming a standardized design for the machine. This means that the support can be set in multiple positions, and the torque balance point can be calculated according to the weight and rotational deflection of different machines, thus forming standardized production, rather than relying on the experience of assembly personnel, thereby improving production accuracy. Attached Figure Description

[0018] Figure 1 This is a half-sectional schematic diagram of the present invention;

[0019] Figure 2 This is a three-dimensional schematic diagram of the present utility model. Figure 1 ;

[0020] Figure 3 This is a three-dimensional schematic diagram of the present utility model. Figure 2 ;

[0021] Figure 4 This is a cross-sectional view of the present invention;

[0022] Figure 5 This is a schematic diagram of the back frame.

[0023] In the picture,

[0024] 1 is the base frame, 10 is the back plate, 11 is the support section, and 12 is the positioning groove.

[0025] 21 is the Z-axis guide rail, and 22 is the ball screw.

[0026] 31 is the first drive unit, and 32 is the second drive unit.

[0027] 4 is the main spindle, and 40 is the quick-release joint.

[0028] 51 is the first belt, 52 is the second belt.

[0029] 6 is the pivot point, and 60 is the positioning seat.

[0030] 71 is the first screw, and 72 is the second screw.

[0031] 8 represents a tripod. Detailed Implementation

[0032] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0033] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] like Figures 1 to 5 As shown, a remounted Z-axis moving device for a CNC machining equipment includes:

[0036] The base frame 1 (preferably with openwork sections to reduce its overall weight and improve balance) includes a back plate 10 and support portions 11 extending forward from the front wall of the back plate 10. The support portions 11 are located on both sides of the back plate 10.

[0037] The two support parts 11 form a positioning groove 12;

[0038] Z-axis guide rail 21, on the horizontal moving frame, is provided with Z-axis slider that cooperates with the Z-axis. There are two Z-axis guide rails 21, which are spaced apart on the wall surface of the back plate 10 away from the support part 11.

[0039] The ball screw 22 is pivotally mounted on the back plate 10 at both ends. The ball screw 22 is located between the two Z-axis guide rails 21. The horizontal moving frame is equipped with a fixed screw nut. Therefore, in actual movement, the base frame 1 is used as the basis for the overall movement, which further ensures the balance of the main shaft 4.

[0040] The first driving device 31 is located at the top of the positioning groove 12 and is connected to the ball screw to drive its rotation.

[0041] Main shaft 4, which is located at the lower part of the positioning groove 12;

[0042] The second driving device 32 is located in the middle of the positioning groove 12 or on the outside of the support part 11. The driving device is used to drive the main shaft 4 to rotate.

[0043] In practical design, the structural configuration of base frame 1 allows for movement along the Z-axis while maintaining its balance.

[0044] The first balancing structure includes a support 11 and a Z-axis guide rail 21;

[0045] The second balancing structure includes ball screws and a first drive device 31 located on both sides of the back plate 10;

[0046] The third balancing structure includes a main shaft 4 and a support part 11, as well as the main shaft 4 and the second drive device 32.

[0047] When the spindle 4 rotates, it generates rotational deflection. By using multiple balancing structures, its balance can be effectively guaranteed, thereby improving the machining accuracy of the spindle 4 tool during rotation. The balancing mechanism is simple in structure and facilitates the assembly of the mechanical structure, forming a standardized design for the machine. The support part 11 can be set in multiple positions, and the torque balance point can be calculated according to the weight and rotational deflection of different machines, thus forming standardized production, rather than relying on the experience of assembly personnel, thereby improving production accuracy.

[0048] Specifically, the back plate 10 has two spaced pivot parts 6 on its back side. The ball screw is pivotally mounted on the pivot part 6, and one end of the ball screw extends upward out of the back plate 10 and is connected to the first drive device 31.

[0049] In this embodiment of the utility model, the first driving device 31 is a first rotary servo motor, and the first rotary servo motor is provided with a positioning seat, which is detachably installed on the top wall of the support part 11.

[0050] Specifically, the positioning seat is provided with a first screw through hole, and the top end of the support part 11 is provided with a first screw hole that mates with the first screw through hole. A first screw 71 passes through the first screw through hole and is screwed into the first screw through hole, thereby realizing the installation and removal of the first rotary servo motor.

[0051] In this embodiment of the utility model, the drive end of the first rotary servo motor is connected to the ball screw through gear meshing or the first belt 51. The specific structure can be designed or the drive element can be replaced according to actual needs.

[0052] Specifically, the drive end of the first rotary servo motor is positioned upwards, and the driven end of the ball screw is positioned upwards. Through this reasonable layout, the connection of the drive structure is achieved, and assembly is also more convenient. In particular, when the mechanical structure is large, it creates a larger clearance installation space.

[0053] In this embodiment of the utility model, the spindle 4 is provided with a quick-release port 40 for mounting a cutting tool, and the quick-release port is existing technology.

[0054] Specifically, the second drive device 32 is a second rotary servo motor, with the drive end of the second rotary servo motor facing downwards and the driven end of the main shaft 4 facing upwards. The drive end of the second rotary servo motor and the driven end of the main shaft 4 are connected by gear meshing or a second belt 52.

[0055] In this embodiment of the utility model, the back plate 10 is provided with a second screw hole, the main shaft 4 is provided with a second screw through hole that cooperates with the second screw hole, and a second screw 72 passes through the second screw through hole and is screwed into the second screw hole.

[0056] Specifically, the end wall of the support 11 is provided with a tripod 8, which is used to install the second drive device 32, further facilitating the installation of the mechanical structure. The external second drive structure can provide greater drive torque in addition to providing balance.

[0057] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A re-Z-axis moving device of a CNC machining apparatus, characterized by, include: The base frame includes a back plate and support portions extending forward from the front wall of the back plate, the support portions being located on both sides of the back plate. The two support parts form a positioning groove; Two Z-axis guide rails are provided and spaced apart on the wall surface of the back plate away from the support part. A ball screw, the two ends of which are pivotally mounted on a back plate, and the ball screw is located between two Z-axis guide rails; A first driving device is located at the top of the positioning groove and is connected to the ball screw to drive its rotation. The main shaft is located at the lower part of the positioning groove; The second driving device is located in the middle of the positioning groove or on the outside of the support, and is used to drive the main shaft to rotate.

2. The retooling Z-axis movement device of claim 1, wherein: The back of the back plate has two spaced pivot parts, and the ball screw is pivotally mounted on the pivot parts. One end of the ball screw extends upward out of the back plate and is connected to the first drive device.

3. The retooling Z-axis movement device of claim 1, wherein: The first driving device is a first rotary servo motor, and the first rotary servo motor is provided with a positioning seat, which is detachably installed on the top wall of the support.

4. The retooling Z-axis movement device of claim 3, wherein: The positioning seat is provided with a first screw through hole, and the top end of the support part is provided with a first screw hole that mates with the first screw through hole. A first screw passes through the first screw through hole and is screwed into the first screw through hole.

5. The retooling Z-axis movement device of claim 3, wherein: The drive end of the first rotary servo motor is connected to the ball screw via gear meshing or a first belt.

6. The retooling Z-axis movement device of claim 3, wherein: The drive end of the first rotary servo motor is positioned upwards, and the driven end of the ball screw is positioned upwards.

7. The retooling Z-axis movement device of claim 1, wherein: The spindle is provided with a quick-release port for mounting cutting tools.

8. The retooling Z-axis movement device of claim 1, wherein: The second driving device is a second rotary servo motor. The driving end of the second rotary servo motor is set downward, and the driven end of the main shaft is set upward. The driving end of the second rotary servo motor and the driven end of the main shaft are connected by gear meshing or a second belt.

9. The retooling Z-axis movement device of claim 1, wherein: The back plate is provided with a second screw hole, and the main shaft is provided with a second screw through hole that mates with the second screw hole. A second screw passes through the second screw through hole and is screwed into the second screw hole.

10. The retooling Z-axis movement device of claim 1, wherein: The end wall of the support is provided with a tripod, which is used to install the second drive device.

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