A high-precision low-noise feeding mechanism for numerical control machine tool

Abstract

The utility model discloses a kind of high-precision low-noise feeding mechanism for numerical control machine tool, it is related to numerical control machine tool feeding appliance technical field, including machine tool, the front end middle part of machine tool is equipped with mounting slot, and the front end side of machine tool is equipped with control panel, another side of mounting slot extends to machine tool interior, feeding assembly is equipped in mounting slot, and processing assembly is installed on feeding assembly;The utility model is cooperated with first guide rod and bottom plate by first screw rod, it is convenient to make bottom plate completely suspended;It is convenient to eliminate the noise generated due to insufficient flatness when bottom plate feeds;It is convenient to control processing assembly accurate feeding by the cooperation of second screw rod and support plate, it is convenient to improve the precision of feeding;Through the cooperation of protective door and machine tool, it is convenient to prevent the splashing of cutting debris, it is convenient to protect user;Solved the problem that current feeding mechanism for numerical control machine tool is prone to noise due to insufficient flatness when using.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool feeding tools, and in particular to a high-precision, low-noise feeding mechanism for CNC machine tools. Background Technology

[0002] The high-precision, low-noise feed mechanism for CNC machine tools is a core component used to drive the tool post or worktable to achieve precise linear displacement. Its high performance ensures the machining accuracy, surface finish, and long-term stability of CNC machine tools in fields such as precision molds and aerospace. Existing CNC machine tool feed tools generally use a screw to drive a base plate that is slidably connected in a slide groove to move, thereby controlling the feed of the machining structure on the base plate. However, if the flatness of the inner wall of the slide groove or the base plate is insufficient, friction noise will be generated during operation. Therefore, the above-mentioned problems need to be improved. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-precision, low-noise feed mechanism for CNC machine tools.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a high-precision, low-noise feed mechanism for CNC machine tools, comprising a machine tool, a mounting groove provided in the middle of the front end of the machine tool, a control panel installed on one side of the front end of the machine tool, the other side of the mounting groove extending into the machine tool, a feed assembly provided in the mounting groove, a machining assembly installed on the feed assembly, and multiple sliding grooves equidistantly provided laterally on the bottom surface of the mounting groove, a protective door slidably connected to the other side of the front end of the machine tool, and an observation window and a handle installed at the front end of the protective door.

[0005] The feed assembly includes a base plate longitudinally disposed in a mounting groove. A first guide rod passes through the lower front and rear ends of the base plate, and a first screw is threadedly connected to the lower center of the base plate. The first screw and the first guide rod are respectively placed in a sliding groove, and the first screw is rotatably connected to the machine tool.

[0006] Preferably, one end of the first screw is connected to a first motor via a coupling, the first motor is fixed to the machine tool via a support base, the first guide rod is fixed to the machine tool, the lower end of the base plate is placed in multiple sliding grooves, and the base plate does not contact the machine tool.

[0007] Preferably, the upper end of the base plate is provided with a support plate, the front and rear ends of the support plate are connected to sliders, the inner wall of the base plate is provided with two transverse movable grooves at the front and rear ends to cooperate with the sliders sliding, a second guide rod is fixedly connected in the rear movable groove, a second screw is rotatably connected in the front movable groove, the rear end of the support plate is placed on the second guide rod to slide, and the front end of the support plate is threadedly connected to the second screw.

[0008] Preferably, one end of the second screw is connected to a second motor via a coupling, the second motor is fixed to the base plate via a support plate, a third guide rod and a third screw are respectively provided on both sides of the upper end of the support plate, the third screw is rotatably connected to the support plate, the third guide rod is fixed to the support plate, the front end of the third screw is connected to a third motor via a coupling, and the third motor is fixed to the support plate.

[0009] Preferably, the processing assembly includes a mounting base threaded onto a third screw, the other side of the mounting base sliding on a third guide rod, and an electric spindle mounted on the mounting base. One side of the electric spindle is connected to a drill rod via a coupling, and the other side of the drill rod is provided with a three-jaw chuck, which is mounted on the inner wall of one side of the mounting groove.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the cooperation between the first screw, the first guide rod, and the base plate facilitates the complete suspension of the base plate; it also facilitates the elimination of noise caused by insufficient flatness during base plate feeding; the cooperation between the second screw and the support plate facilitates precise control of the processing component feeding, thereby improving feeding accuracy; the cooperation between the protective door and the machine tool facilitates the prevention of cutting debris splashing, thus protecting the user; and it solves the problem that existing CNC machine tool feeding mechanisms are prone to generating noise due to insufficient flatness during use. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0012] Figure 1 This is a three-dimensional schematic diagram of the overall structure proposed in this utility model;

[0013] Figure 2 This is a schematic diagram of the overall structure proposed in this utility model from another perspective;

[0014] Figure 3 This is a cross-sectional view of the overall structure proposed in this utility model;

[0015] Figure 4This is an enlarged schematic diagram of the processing structure proposed in this utility model;

[0016] Figure 5 This is a cross-sectional schematic diagram of the feed machining structure proposed in this utility model.

[0017] The numbers in the diagram are: 1. Machine tool; 2. Protective door; 3. First motor; 4. First screw; 5. Base plate; 6. Support plate; 7. Second motor; 8. Second screw; 9. Third motor; 10. Third screw; 11. Mounting base; 12. Electric spindle; 13. Three-jaw chuck. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example: See Figures 1 to 5 This utility model discloses a high-precision, low-noise feed mechanism for CNC machine tools, comprising a machine tool 1. A mounting groove is formed at the center of the front end of the machine tool 1, and a control panel is mounted on one side of the front end of the machine tool 1. The other side of the mounting groove extends into the machine tool 1, and a feed assembly is housed within the mounting groove. A machining assembly is mounted on the feed assembly, and multiple horizontally spaced grooves are formed on the bottom surface of the mounting groove. A protective door 2 is slidably connected to the other side of the front end of the machine tool 1. An observation window and a handle are mounted at the front end of the protective door 2. The cooperation between the feed assembly and the machining assembly facilitates improved machining accuracy. The feed assembly includes a base plate 5 longitudinally positioned within the mounting groove. The bottom of the base plate 5 has a first guide rod running through it at both the front and rear ends. The bottom center of the base plate 5 is threaded with a first screw 4. The first screw 4 and the first guide rod are respectively placed in the slide grooves. The first screw 4 is rotatably connected to the machine tool 1. The cooperation between the first screw 4 and the first guide rod facilitates the control of the feed of the base plate 5. One end of the first screw 4 is connected to a first motor 3 through a coupling. The first motor 3 is fixed to the machine tool 1 through a support seat. The first guide rod is fixed to the machine tool 1. The bottom end of the base plate 5 is placed in multiple slide grooves. The base plate 5 does not contact the machine tool 1. The first guide rod and the first screw 4 facilitate the control of the feed of the base plate 5 and its support.

[0020] In this invention, a support plate 6 is provided on the upper end of the base plate 5. A slider is connected to the front and rear ends of the support plate 6. Two transverse movable grooves are opened laterally on the inner wall of the base plate 5 at both ends to cooperate with the slider sliding. A second guide rod is fixedly connected in the rear movable groove, and a second screw 8 is rotatably connected in the front movable groove. The rear end of the support plate 6 slides on the second guide rod, and the front end of the support plate 6 is threadedly connected to the second screw 8. The second screw 8 facilitates precise control of the feed amount of the processing component. One end of the second screw 8 is connected to a second motor 7 via a coupling. The second motor 7 is fixedly connected to the base plate 5 via a support plate. Third guide rods are provided on both sides of the upper end of the support plate 6. The guide rod is connected to the third screw 10, which is rotatably connected to the support plate 6. The third guide rod is fixed to the support plate 6. The front end of the third screw 10 is connected to the third motor 9 via a coupling. The third motor 9 is fixed to the support plate 6. The processing assembly includes a mounting seat 11 threaded onto the third screw 10. The other side of the mounting seat 11 slides on the third guide rod. An electric spindle 12 is mounted on the mounting seat 11. One side of the electric spindle 12 is connected to a drill rod via a coupling. The other side of the drill rod is provided with a three-jaw chuck 13. The three-jaw chuck 13 is installed on the inner wall of one side of the mounting groove. The three-jaw chuck 13 facilitates clamping of objects, thereby facilitating processing.

[0021] Working principle: When using the high-precision, low-noise feed mechanism of this CNC machine tool, the object to be processed is first placed in the middle of the three-jaw chuck 13 on the inner wall of one side of the mounting slot. Then, the three-jaw chuck 13 is activated to clamp and fix the object, ensuring the stability of the object's position during processing. After the object is clamped, the operator pushes the protective door 2, which is slidably connected to the other side of the front end of the machine tool 1, and slides it along a preset trajectory to the closed state through the handle at the front end of the protective door 2, thereby forming a closed processing space, ensuring processing safety and reducing external interference.

[0022] Next, the first motor 3, which is fixed to the support base of the machine tool 1, is started. The first motor 3 drives the first screw 4 connected to it to rotate on the machine tool 1 through the coupling. Since the first screw 4 is threaded to the lower middle of the base plate 5 which is longitudinally set in the mounting groove, and the first guide rod (fixed to the machine tool 1) passing through the lower front and rear ends of the base plate 5 plays a guiding and supporting role for the base plate 5, and the lower end of the base plate 5 is placed in multiple sliding grooves opened laterally on the bottom surface of the mounting groove of the machine tool 1 and does not contact the machine tool 1, it only relies on the cooperation of the first guide rod and the first screw 4 to achieve suspended movement. This design effectively reduces the feed noise during operation. Driven by the first motor 3, the base plate 5 will feed towards the processing area along the extension direction of the first guide rod and the first screw 4.

[0023] When the control panel installed on the front side of the machine tool 1 shows that the base plate 5 is about to be fed to the preset working position, the first motor 3 is turned off to stop the coarse feed action of the base plate 5. At this time, in order to further improve the feed accuracy, the second motor 7 fixed to the support plate of the base plate 5 is started. The second motor 7 drives the second screw 8, which is rotatably connected in the movable groove at the front end of the base plate 5, to rotate through the coupling. Since the front end of the support plate 6 is threadedly connected to the second screw 8, and the rear end is placed on the second guide rod fixed in the movable groove at the rear end of the base plate 5 and can slide along it, under the rotation action of the second screw 8, the support plate 6 will continue to perform precision feed along the transverse trajectory of the second guide rod and the second screw 8, thereby achieving higher precision position adjustment.

[0024] After the support plate 6 is fed to the precise machining position, the electric spindle 12 mounted on the mounting base 11 is started. The electric spindle 12 drives the drill rod connected to one side to rotate at high speed through the coupling, thereby performing machining operations on the object clamped by the three-jaw chuck 13. During the machining process, if it is necessary to fine-tune the longitudinal feed amount according to the machining requirements, the third motor 9 fixed to the support plate 6 can be started. The third motor 9 drives the third screw 10 rotatably connected to the support plate 6 to rotate through the coupling. Since the mounting base 11 is threaded to the third screw 10 and slides on the third guide rod fixed to the support plate 6 on the other side, the rotation of the third screw 10 will drive the mounting base 11 and the electric spindle 12 to fine-tune along the direction of the third guide rod to ensure machining accuracy.

[0025] After the object is processed, first turn off the electric spindle 12. After the drill rod stops rotating, start the three-jaw chuck 13 to release the processed object. Then, the operator slides the protective door 2 open using the handle at the front of the protective door 2, takes out the processed object, and finally turns off the second motor 7, the third motor 9 and other related components in sequence to complete the entire processing process.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-precision, low-noise feed mechanism for a CNC machine tool, comprising a machine tool (1), characterized in that: The machine tool (1) has a mounting slot in the middle of its front end, and a control panel is installed on one side of the front end of the machine tool (1). The other side of the mounting slot extends into the machine tool (1). A feed assembly is provided in the mounting slot. A machining assembly is installed on the feed assembly. Multiple sliding grooves are provided at equal intervals on the bottom surface of the mounting slot. A protective door (2) is slidably connected to the other side of the front end of the machine tool (1). An observation window and a handle are installed at the front end of the protective door (2).

2. The high-precision, low-noise feed mechanism for CNC machine tools according to claim 1, characterized in that: The feed assembly includes a base plate (5) longitudinally disposed in the mounting groove. A first guide rod passes through the lower front end and the lower rear end of the base plate (5). A first screw (4) is threadedly connected to the middle of the lower end of the base plate (5). The first screw (4) and the first guide rod are respectively placed in the slide groove. The first screw (4) is rotatably connected to the machine tool (1).

3. The high-precision, low-noise feed mechanism for CNC machine tools according to claim 2, characterized in that: One end of the first screw (4) is connected to the first motor (3) via a coupling. The first motor (3) is fixed to the machine tool (1) via a support base. The first guide rod is fixed to the machine tool (1). The lower end of the base plate (5) is placed in multiple sliding grooves, and the base plate (5) does not contact the machine tool (1).

4. A high-precision, low-noise feed mechanism for CNC machine tools according to claim 2, characterized in that: The upper end of the base plate (5) is provided with a support plate (6). The front and rear ends of the support plate (6) are connected to sliders. The inner wall of the base plate (5) has two transverse movable grooves that cooperate with the sliders to slide. The rear movable groove is fixedly connected to a second guide rod. The front movable groove is rotatably connected to a second screw (8). The rear end of the support plate (6) slides on the second guide rod, and the front end of the support plate (6) is threadedly connected to the second screw (8).

5. A high-precision, low-noise feed mechanism for CNC machine tools according to claim 4, characterized in that: One end of the second screw (8) is connected to the second motor (7) via a coupling. The second motor (7) is fixed to the base plate (5) via a support plate. The upper sides of the support plate (6) are respectively provided with a third guide rod and a third screw (10). The third screw (10) is rotatably connected to the support plate (6). The third guide rod is fixed to the support plate (6). The front end of the third screw (10) is connected to the third motor (9) via a coupling. The third motor (9) is fixed to the support plate (6).

6. A high-precision, low-noise feed mechanism for CNC machine tools according to claim 1, characterized in that: The processing assembly includes a mounting base (11) threaded onto a third screw (10), the other side of which slides on a third guide rod, and an electric spindle (12) is mounted on the mounting base (11). A drill rod is connected to one side of the electric spindle (12) via a coupling, and a three-jaw chuck (13) is provided on the other side of the drill rod. The three-jaw chuck (13) is mounted on the inner wall of one side of the mounting groove.

Images