Five-axis numerical control machine tool

Abstract

The five-axis type numerical control machine tool comprises a base, a stand column, a saddle and a machine head, the bottom of the stand column is vertically installed on the rear side of the top of the base, the saddle is longitudinally arranged on the portion, on the front side of the stand column, of the base in a sliding mode, and the machine head is vertically and movably installed on the front side wall of the stand column. The device is characterized in that the top of the saddle is transversely and movably provided with a double-shaft rotary table, the two sides of the front end of the double-shaft rotary table are each provided with a wire passing protection cover extending towards the lower front portion, and the wire passing protection covers are arranged on the front side of the saddle; a transverse sliding rail, a transverse lead screw and a transverse motor are arranged on the top face of the saddle, the bottom of the double-shaft rotary table is arranged on the transverse sliding rail in a sliding mode, the transverse lead screw is arranged beside the transverse sliding rail in parallel, and the transverse motor is configured to drive the transverse lead screw to rotate. A nut seat is installed at the bottom of the double-shaft rotary table and is in threaded connection with the transverse lead screw. According to the utility model, the processing reduction is improved.

Description

Technical Field

[0001] This utility model relates to a CNC machine tool, and more particularly to a five-axis CNC machine tool. Background Technology

[0002] With the rapid development of modern manufacturing and the growth of the new energy and automotive industries, higher demands are being placed on the machine tool industry, especially regarding the multifaceted nature of machine tool processing. Most machining centers on the market only perform three-axis machining, which cannot complete multi-faceted machining of workpieces. To achieve five-axis machining, a rotatable fixture is typically installed on the worktable (the saddle is mounted on the machine base, and the worktable is then moved and mounted on the saddle) to enable five-axis machining of products by CNC machine tools. However, this structure has the following drawbacks: due to wear and tear on the worktable, the fixture's installation accuracy is insufficient after installation, affecting the product's machining accuracy. Furthermore, inconsistencies between the positioning reference and the worktable, saddle, and cutting tool also affect machining accuracy. Additionally, separate external wiring and hydraulic lines are required to allow the fixture to rotate; these lines and lines are easily scratched and damaged, posing significant safety hazards. Summary of the Invention

[0003] The purpose of this invention is to provide a five-axis CNC machine tool. By using this structure, the machining accuracy of the CNC machine tool can be improved and safety hazards can be reduced.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a five-axis CNC machine tool, comprising a base, a column, a saddle, and a machine head. The bottom of the column is vertically mounted on the rear side of the top of the base. The saddle is longitudinally slidably mounted on the base in front of the column. The machine head is vertically mounted on the front side wall of the column. A dual-axis rotary table is laterally mounted on the top of the saddle. The two sides of the front end of the dual-axis rotary table are respectively provided with wire guide covers extending downward and forward. The wire guide covers are located on the front side of the saddle.

[0005] The saddle top surface is provided with a transverse slide rail, a transverse lead screw and a transverse motor. The bottom of the dual-axis turntable is slidably mounted on the transverse slide rail. The transverse lead screw is arranged parallel to the side of the transverse slide rail. The transverse motor is configured to drive the transverse lead screw to rotate. A nut seat is installed at the bottom of the dual-axis turntable. The nut seat is screwed to the transverse lead screw.

[0006] In the above technical solution, the dual-axis turntable includes a base plate, a main body, a tailstock, and a turntable base. The bottom of the base plate is slidably mounted on the transverse slide rail, and the nut seat is installed on the bottom surface of the base plate and screwed to the transverse lead screw.

[0007] The main body and the tailstock are horizontally spaced on the base plate, and the two ends of the turntable are rotatably connected to the main body and the tailstock respectively. The main body is configured to drive the turntable to rotate.

[0008] In the above technical solution, the main body is equipped with a main motor, and the two ends of the turntable are respectively rotatably connected to the main body and the tailstock via a connecting shaft. The connecting shaft is arranged parallel to the transverse slide rail, and the main motor is configured to drive the connecting shaft connected to the main body to rotate.

[0009] In the above technical solution, a product clamp is rotatably mounted on the turntable base, and a second motor is provided on the turntable base to drive the product clamp to rotate.

[0010] In the above technical solution, the cable guide cover includes a left cable guide cover and a right cable guide cover. The top of the left cable guide cover is connected to the bottom front end of the tailstock, and the top of the right cable guide cover is connected to the bottom front end of the main body.

[0011] In the above technical solution, a telescopic cover is installed on each side of the dual-axis turntable. The outer end of the telescopic cover is fixedly connected to the outer end of the corresponding side of the saddle. The bottom of the telescopic cover is provided with a slide groove that is slidably connected to the transverse slide rail.

[0012] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0013] 1. In this utility model, the dual-axis rotary table slides directly on the transverse slide rail of the saddle, and a nut seat is set at the bottom of the dual-axis rotary table and screwed to the transverse lead screw on the saddle. The transverse motor and the transverse lead screw can directly drive the dual-axis rotary table to move laterally on the saddle. It does not require a worktable and can realize higher precision processing of products by CNC machine tools.

[0014] 2. This utility model also includes a wire guide cover, which is located on the front side of the saddle, so that the internal wires are not exposed, do not need to be connected separately, prevent wire damage, reduce safety hazards, and are also more aesthetically pleasing. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of Embodiment 1 of this utility model (showing the telescopic protective cover portion);

[0016] Figure 2 This is a cross-sectional structural diagram of the connection between the dual-axis turntable and the transverse lead screw in Embodiment 1 of this utility model.

[0017] The components include: 1. Base; 2. Column; 3. Saddle; 4. Machine head; 5. Dual-axis turntable; 6. Wire guide cover; 7. Horizontal slide rail; 8. Horizontal lead screw; 9. Nut seat; 10. Base plate; 11. Main body; 12. Tailstock; 13. Turntable base; 14. Main motor; 15. Coupling; 16. Product clamp; 17. Second motor; 18. Left wire guide cover; 19. Right wire guide cover; 20. Telescopic cover. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Example 1: See Figure 1 , 2 As shown, a five-axis CNC machine tool includes a base 1, a column 2, a saddle 3, and a machine head 4. The bottom of the column 2 is vertically mounted on the rear top of the base 1. The saddle 3 is longitudinally slidably mounted on the base 1 in front of the column 2. The machine head 4 is vertically mounted on the front side wall of the column 2. A dual-axis rotary table 5 is laterally mounted on the top of the saddle 3. The two sides of the front end of the dual-axis rotary table 5 are respectively provided with wire guide covers 6 extending downward and forward. The wire guide covers 6 are located on the front side of the saddle 3.

[0020] The saddle 3 is provided with a transverse slide rail 7, a transverse lead screw 8 and a transverse motor on its top surface. The bottom of the dual-axis turntable 5 is slidably mounted on the transverse slide rail 7. The transverse lead screw 8 is arranged parallel to the side of the transverse slide rail 7. The transverse motor is configured to drive the transverse lead screw 8 to rotate. A nut seat 9 is installed at the bottom of the dual-axis turntable 5. The nut seat 9 is screwed to the transverse lead screw 8.

[0021] In this embodiment, a vertical drive mechanism is provided on the column to drive the machine head to move vertically along the column. The vertical drive mechanism can be a combination of a vertical motor and a vertical lead screw. The vertical motor drives the vertical lead screw to rotate, and the vertical lead screw is screwed to the machine head, thereby driving the machine head to move vertically along the column, closer to or further away from the base. A longitudinal drive mechanism is provided on the base. The longitudinal drive mechanism adopts a combination of a longitudinal motor and a longitudinal lead screw. The longitudinal motor drives the longitudinal lead screw to rotate, and the longitudinal lead screw is screwed to the saddle. Through the rotation of the longitudinal lead screw, the saddle moves longitudinally on the base. The dual-axis rotary table is directly slidably mounted on the transverse slide rail. In this way, there is no need to set up a worktable. The transverse lead screw can directly drive the dual-axis rotary table to move laterally along the saddle through the nut seat, thereby realizing the three-axis movement of the CNC machine tool. At the same time, a dual-axis rotation is used, and a product fixture is mounted on it. The dual-axis rotary table can drive the product fixture to rotate or drive the product fixture to rotate around the dual-axis rotary table, thereby realizing the five-axis movement processing of the product. Furthermore, the absence of a worktable allows the horizontal lead screw to directly drive the dual-axis rotary table, enabling direct reference positioning with the saddle and machine base. This ensures the accuracy of the CNC machine tool's positioning for product processing and guarantees the precision of the machining. Additionally, this design incorporates a wire guide cover located on the front of the saddle. The cover conceals internal wiring (wires, oil pipes, etc.), enhancing aesthetics, preventing damage to internal wiring, and improving safety by reducing potential hazards.

[0022] See Figure 1 , 2 As shown, the dual-axis turntable 5 includes a base plate 10, a main body 11, a tailstock 12, and a turntable base 13. The bottom of the base plate 10 is slidably mounted on the transverse slide rail 7. The nut seat 9 is installed on the bottom surface of the base plate 10 and is screwed to the transverse lead screw 8.

[0023] The main body 11 and the tail seat 12 are horizontally spaced on the base plate 10. The two ends of the turntable 13 are rotatably connected to the main body 11 and the tail seat 12 respectively. The main body 11 is configured to drive the turntable 13 to rotate.

[0024] The main body 11 is equipped with a main motor 14. The two ends of the turntable 13 are rotatably connected to the main body 11 and the tailstock 12 via a connecting shaft 15. The connecting shaft 15 is arranged parallel to the transverse slide rail 7. The main motor 14 is configured to drive the connecting shaft 15 on the main body 11 to rotate, thereby driving the turntable 13 to rotate.

[0025] A product clamp 16 is rotatably mounted on the turntable base 13, and a second motor 17 is provided on the turntable base 13 to drive the product clamp 16 to rotate.

[0026] In this embodiment, the product fixture is used for clamping the product, and the nut seat is directly set at the bottom of the base plate, directly connected to the transverse lead screw. The turntable base is directly installed on the top surface of the base plate. In this way, the CNC machine tool can position the reference, mainly by positioning the corresponding drive mechanisms: the longitudinal drive mechanism on the base for driving the saddle to move back and forth, the vertical drive mechanism on the column for driving the machine head to move vertically, and the transverse motor and transverse lead screw on the saddle for driving the dual-axis turntable to move laterally. These three can accurately determine the position of the product and the tool to ensure precise control of the product's machining accuracy.

[0027] Taking the direction shown in the diagram as an example, the connecting shaft is set parallel to the horizontal slide rail. Therefore, the main motor can drive the turntable base and the product fixture above to rotate, so that the working surface (top surface) of the product fixture faces backward, upward, and forward, allowing the cutting tool to process different surfaces of the product on the same plane. The axis of the product fixture is set perpendicular to the connecting shaft. The second motor can drive the product fixture to rotate within 360° or 180°, so that the cutting tool on the machine head can process the product at different positions within the rotating surface.

[0028] See Figure 1 As shown, the cable guide 6 includes a left cable guide 18 and a right cable guide 19. The top of the left cable guide 18 is connected to the bottom front end of the tailstock 12, and the top of the right cable guide 19 is connected to the bottom front end of the main body 11. The right cable guide is used to shield and protect the wiring inside the main body, while the left cable guide is used to shield and protect the wiring entering the tailstock (the wiring inside the tailstock will enter the turntable base).

[0029] See Figure 1 As shown, a telescopic cover 20 is installed on each side of the dual-axis turntable 5. The outer end of the telescopic cover 20 is fixedly connected to the outer end of the corresponding side of the saddle 3. The bottom of the telescopic cover 20 is provided with a sliding groove that is slidably connected to the transverse slide rail 7.

[0030] The telescopic cover is designed to fold the transverse slide rail, transverse motor, and transverse lead screw, preventing debris and cutting fluid from entering and affecting the normal movement of the dual shafts. It also prevents damage to the transverse motor, slide rail, and lead screw, extending their service life, reducing maintenance, and ensuring normal equipment operation. Furthermore, the bottom of the telescopic cover is slidably connected to the transverse slide rail, which also acts as the frame for the telescopic cover, reducing its cost and weight.

Claims

1. A five-axis CNC machine tool, comprising a base, a column, a saddle, and a machine head, wherein the bottom of the column is vertically mounted on the rear side of the top of the base, the saddle is longitudinally slidably disposed on the base on the front side of the column, and the machine head is vertically movable and mounted on the front sidewall of the column, characterized in that: A dual-axis turntable is laterally mounted on the top of the saddle. The front sides of the dual-axis turntable are respectively provided with wire guides extending downward and forward. The wire guides are located on the front side of the saddle. The saddle top surface is provided with a transverse slide rail, a transverse lead screw and a transverse motor. The bottom of the dual-axis turntable is slidably mounted on the transverse slide rail. The transverse lead screw is arranged parallel to the side of the transverse slide rail. The transverse motor is configured to drive the transverse lead screw to rotate. A nut seat is installed at the bottom of the dual-axis turntable. The nut seat is screwed to the transverse lead screw.

2. The five-axis CNC machine tool according to claim 1, characterized in that: The dual-axis turntable includes a base plate, a main body, a tailstock, and a turntable base. The bottom of the base plate is slidably mounted on the transverse slide rail. The nut seat is installed on the bottom surface of the base plate and is screwed to the transverse lead screw. The main body and the tailstock are horizontally spaced on the base plate, and the two ends of the turntable are rotatably connected to the main body and the tailstock respectively. The main body is configured to drive the turntable to rotate.

3. The five-axis CNC machine tool according to claim 2, characterized in that: The main body is equipped with a main motor. The two ends of the turntable are rotatably connected to the main body and the tailstock via a connecting shaft. The connecting shaft is arranged parallel to the transverse slide rail. The main motor is configured to drive the connecting shaft connected to the main body to rotate.

4. The five-axis CNC machine tool according to claim 2, characterized in that: A product clamp is rotatably mounted on the turntable base, and a second motor is provided on the turntable base to drive the product clamp to rotate.

5. The five-axis CNC machine tool according to claim 2, characterized in that: The cable guide covers include a left cable guide cover and a right cable guide cover. The top of the left cable guide cover is connected to the bottom front end of the tailstock, and the top of the right cable guide cover is connected to the bottom front end of the main body.

6. The five-axis CNC machine tool according to claim 1, characterized in that: A telescopic cover is installed on each side of the dual-axis turntable. The outer end of the telescopic cover is fixedly connected to the outer end of the corresponding side of the saddle. The bottom of the telescopic cover is provided with a slide groove that is slidably connected to the transverse slide rail.

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