High-stability numerical control machine tool
By setting up a pull-up frame on the top of the machining head of the CNC machine tool and slidingly connecting it with the top side of the cross beam, the problem of poor stability of the existing CNC machine tool is solved, and higher machining head stability and better processing quality are achieved.
Patent Information
- Application Number
- CN202420261629.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-02
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-02-02
AI Technical Summary
During processing, existing CNC machine tools have poor stability due to the large inertia of the processing head, which affects the processing quality.
A high-stability CNC machine tool is designed. By setting up a pull-up frame on the top of the machining head and slidingly connected to the top side of the cross beam, the gravity of the machining head is dispersed, the limit points are increased, and the stability of the drive device is improved.
It effectively reduces the risk of the machining head breaking out from one side of the beam, improves the limit of the machining head in the up and down and horizontal directions, enhances the stability of the drive device when driving the machining head movement, and thus improves the processing quality of the CNC machine tool.
Smart Images
Figure CN222588788U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a machine tool, in particular to a high-stability numerically controlled machine tool. Background Art
[0002] When a CNC machine tool is working, a driving source is required to drive the processing head to reciprocate on the base to realize the processing of the workpiece. The processing head usually integrates multiple structural parts, such as the processing head, a lifting drive that drives the processing head up and down, and a drive that drives the processing head to rotate. The mass of the entire processing head is large, resulting in poor stability due to the large inertia of the processing head when moving. Therefore, there is an urgent need for a CNC machine tool with higher stability when moving. Utility Model Content
[0003] The utility model aims to provide a high-stability CNC machine tool to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.
[0004] The solution of the utility model to solve the technical problem is:
[0005] A high-stability CNC machine tool comprises: a base connected to a crossbeam; a processing head slidably connected to one side of the crossbeam along the left-right direction, an upper pull-up frame connected to the top of the processing head, the upper pull-up frame extends obliquely toward the base, and the upper pull-up frame is slidably connected to the top side of the crossbeam along the left-right direction; a driving device is arranged on the crossbeam, the driving device is transmission-connected to the processing head, and the driving device drives the processing head to move along the left-right direction.
[0006] This technical solution has at least the following beneficial effects: in addition to the processing head being slidably connected to one side of the beam, an upper pull frame is also connected to the top of the processing head, and the upper pull frame is also slidably connected to the top side of the beam. The connection between the upper pull frame at the top of the processing head and the top side of the beam can disperse the gravity of the processing head, effectively reducing the risk of the processing head falling out of one side of the beam. In this way, the processing head forms a sliding connection with one side of the beam and the top side of the beam, respectively, which greatly improves the limit of the processing head in the up and down and horizontal directions, thereby improving the stability of the driving device when driving the processing head to move, and improving the processing quality of the CNC machine tool.
[0007] As a further improvement of the above technical solution, a first dovetail guide rail extending in the left-right direction is provided on the top side of the crossbeam, and a first dovetail guide groove extending in the left-right direction is provided on the bottom side of the upper bracket, and the first dovetail guide rail and the first dovetail guide groove are connected with each other. By utilizing the dovetail structure characteristics of the first dovetail guide rail, after the first dovetail guide groove on the bottom side of the upper bracket is matched with the first dovetail guide rail, the upper bracket can be effectively prevented from escaping from the first dovetail guide rail upward, thereby further improving the connection stability between the upper bracket and the crossbeam.
[0008] As a further improvement of the above technical solution, a downwardly protruding block is formed at the end of the upper pull frame close to the processing head, and the processing head is provided with an upwardly arranged card slot, and the card block is inserted downwardly into the card slot. When the upper pull frame and the processing head are connected with each other, it is only necessary to insert the card block on the upper pull frame downward into the card slot of the processing head to achieve a quick connection between the two, and the cooperation between the first dovetail guide rail and the first dovetail guide slot can effectively prevent the upper pull frame from moving upward, thereby limiting the card block from escaping from the card slot upward, and achieving a quick and compact connection between the upper pull frame and the processing head.
[0009] As a further improvement of the above technical solution, the driving device includes a driving motor, a first transmission rod and a transmission seat, the two ends of the first transmission rod are rotatably connected to the side of the crossbeam facing the processing head, the transmission seat is connected to the first transmission rod by a thread, the processing head is connected to the transmission seat, and the driving motor is connected to the first transmission rod. When it is necessary to drive the processing head to move, since the transmission seat is threadedly connected to the first transmission rod, and the processing head is slidably connected to the crossbeam in the left and right directions, the driving motor drives the first transmission rod to rotate, thereby making the transmission seat move in the left and right directions.
[0010] As a further improvement of the above technical solution, the driving device also includes a second transmission rod, a first transmission gear, a second transmission gear and a driving gear, the driving gear is connected to the output end of the driving motor, the first transmission gear is synchronously connected to the first transmission rod, the second transmission rod is rotationally connected to the top side of the beam, the second transmission rod passes through the upper pull frame and is threadedly connected to the upper pull frame, the second transmission gear is synchronously connected to the second transmission rod, and the first transmission gear and the second transmission gear are respectively engaged with the upper and lower sides of the driving gear. When the driving motor is working, the power is transmitted to the first transmission gear and the second transmission gear respectively through the driving gear, thereby driving the first transmission rod and the second transmission rod to rotate, so that the transmission seat and the upper pull frame can be driven to move synchronously, and the driving force for movement is provided at multiple positions of the processing head, which effectively reduces the problem of jamming when the processing head is subjected to the driving force of a single point position.
[0011] As a further improvement of the above technical solution, a sliding pair is provided between the processing machine head and the crossbeam, the sliding pair includes a second dovetail guide rail and a second dovetail guide groove, the second dovetail guide rail is connected to the side of the crossbeam facing the processing machine head, the second dovetail guide groove is provided on the side of the processing machine head facing the crossbeam, and the second dovetail guide rail and the second dovetail guide groove are connected in cooperation with each other. Similarly, by utilizing the dovetail structural characteristics of the second dovetail guide rail, after the second dovetail guide groove on one side of the upper pull frame is matched with the second dovetail guide rail of the crossbeam, the upper pull frame can be effectively prevented from horizontally slipping out of the second dovetail guide rail, thereby further improving the connection stability between the upper pull frame and the crossbeam.
[0012] As a further improvement of the above technical solution, the sliding pair is provided above and below the first transmission rod. The two sliding pairs increase the range covered by the sliding connection between the processing head and the crossbeam, thereby further improving the connection stability between the processing head and the crossbeam.
[0013] As a further improvement of the above technical solution, a hollow hole is provided in the middle of the upper pull-up frame, which can reduce the mass of the upper pull-up frame and reduce the production cost of the upper pull-up frame.
[0014] As a further improvement of the above technical solution, the upper bracket is provided with a plurality of reinforcing ribs at intervals, which can enhance the anti-deformation capability of the upper bracket and thus improve the structural stability of the upper bracket. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.
[0016] Figure 1 It is a side view of the first embodiment of the utility model.
[0017] Figure 2 It is a front view of the second embodiment of the utility model.
[0018] In the accompanying drawings: 1-base, 11-crossbeam, 111-first dovetail guide rail, 2-processing head, 21-upper pull frame, 22-second dovetail guide rail, 3-driving device, 31-driving motor, 32-first transmission rod, 33-second transmission rod, 34-first transmission gear, 35-second transmission gear, 36-driving gear. DETAILED DESCRIPTION
[0019] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connecting accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.
[0020] Reference Figure 1 A high-stability CNC machine tool comprises: a base 1, which is connected to a crossbeam 11; a processing head 2, which is slidably connected to one side of the crossbeam 11 along the left-right direction, and the top of the processing head 2 is connected to an upper pull frame 21, and the upper pull frame 21 extends obliquely toward the base 1, and the upper pull frame 21 is slidably connected to the top side of the crossbeam 11 along the left-right direction; a driving device 3, which is arranged on the crossbeam 11, and the driving device 3 is transmission-connected to the processing head 2, and the driving device 3 drives the processing head 2 to move along the left-right direction.
[0021] In this high-stability CNC machine tool, in addition to being slidably connected to one side of the beam 11, the processing head 2 is also connected to an upper pull frame 21 at the top of the processing head 2, and the upper pull frame 21 is also slidably connected to the top side of the beam 11. The connection between the upper pull frame 21 at the top of the processing head 2 and the top side of the beam 11 can disperse the gravity of the processing head 2, and effectively reduce the risk of the processing head 2 falling out from one side of the beam 11. In this way, the processing head 2 forms a sliding connection with one side of the beam 11 and the top side of the beam 11, respectively, which greatly improves the limit of the processing head 2 in the up and down and horizontal directions, thereby improving the stability of the driving device 3 when driving the processing head 2 to move, and improving the processing quality of the CNC machine tool.
[0022] The upper pull frame 21 is connected to the cross beam 11 by means of a slide rail and a slide groove. In order to improve the anti-slip effect of the upper pull frame 21, in this embodiment, a first dovetail guide rail 111 extending in the left-right direction is provided on the top side of the cross beam 11, and a first dovetail guide groove extending in the left-right direction is provided on the bottom side of the upper pull frame 21. The first dovetail guide rail 111 and the first dovetail guide groove are connected in cooperation with each other. By utilizing the dovetail structural characteristics of the first dovetail guide rail 111, after the first dovetail guide groove on the bottom side of the upper pull frame 21 and the first dovetail guide rail 111 are matched with each other, the upper pull frame 21 can be effectively prevented from slipping out of the first dovetail guide rail 111 upwards, thereby further improving the connection stability between the upper pull frame 21 and the cross beam 11.
[0023] The upper pull frame 21 can be installed on the processing head 2 as an optional structure. In this case, the upper pull frame 21 and the processing head 2 are connected in a detachable manner. When the stability of the movement of the processing head 2 needs to be enhanced, the upper pull frame 21 is connected to the processing head 2. Specifically, a downwardly protruding block is formed at the end of the upper pull frame 2 close to the processing head 2, and the processing head 2 is provided with an upwardly arranged slot, and the block is inserted downwardly into the slot. When the upper pull frame 21 and the processing head 2 are connected to each other, it is only necessary to insert the block on the upper pull frame 21 downward into the slot of the processing head 2 to achieve a quick connection between the two, and the mutual cooperation of the first dovetail guide rail 111 and the first dovetail guide groove can effectively prevent the upper pull frame 21 from moving upward, thereby limiting the block from escaping from the slot upward, and achieving a quick and compact connection between the upper pull frame 21 and the processing head 2.
[0024] The driving device 3 is mainly used to drive the processing head 2 to move. There are many structural forms, such as directly using a cylinder or a hydraulic cylinder. Considering the improvement of the movement accuracy of the processing head 2, in the first embodiment, the driving device 3 only provides driving force to the processing head 2 on one side of the beam 11. Specifically, the driving device 3 includes a driving motor 31, a first transmission rod 32 and a transmission seat. The two ends of the first transmission rod 32 are rotatably connected to the side of the beam 11 facing the processing head 2. The transmission seat is connected to the first transmission rod 32 by threads. The processing head 2 is connected to the transmission seat, and the driving motor 31 is connected to the first transmission rod 32. When it is necessary to drive the processing head 2 to move, since the transmission seat is threadedly connected to the first transmission rod 32, and the processing head 2 is slidably connected to the beam 11 in the left and right directions, the driving motor 31 drives the first transmission rod 32 to rotate, so that the transmission seat moves in the left and right directions.
[0025] like Figure 2As shown, in the second embodiment, the driving device 3 further includes a second transmission rod 33, a first transmission gear 34, a second transmission gear 35 and a driving gear 36, wherein the driving gear 36 is connected to the output end of the driving motor 31, the first transmission gear 34 is synchronously connected to the first transmission rod 32, the second transmission rod 33 is rotatably connected to the top side of the crossbeam 11, the second transmission rod 33 passes through the upper bracket 21 and is threadedly connected to the upper bracket 21, the second transmission gear 35 is synchronously connected to the second transmission rod 33, and the first transmission gear 34 and the second transmission gear 35 are respectively meshed with the upper and lower sides of the driving gear 36. When the driving motor 31 is working, the driving gear 36 transmits the power to the first transmission gear 34 and the second transmission gear 35 respectively, thereby driving the first transmission rod 32 and the second transmission rod 33 to rotate, so that the transmission seat and the upper bracket 21 can be driven to move synchronously, and the driving force for movement is provided at multiple positions of the processing head 2, which effectively reduces the problem of easy jamming of the processing head 2 when it is driven by the driving force of a single point position.
[0026] No matter in the first embodiment or the second embodiment, as the specific sliding connection structure between the processing head 2 and the cross beam 11, in the present embodiment, a sliding pair is arranged between the processing head 2 and the cross beam 11, and the sliding pair includes a second dovetail guide rail 22 and a second dovetail guide groove, the second dovetail guide rail 22 is connected to the side of the cross beam 11 facing the processing head 2, the second dovetail guide groove is arranged on the side of the processing head 2 facing the cross beam 11, and the second dovetail guide rail 22 and the second dovetail guide groove are connected in cooperation with each other. Similarly, by utilizing the dovetail structural characteristics of the second dovetail guide rail 22, after the second dovetail guide groove on one side of the upper pull frame 21 is matched with the second dovetail guide rail 22 of the cross beam 11, the upper pull frame 21 can be effectively prevented from horizontally slipping out of the second dovetail guide rail 22, thereby further improving the connection stability between the upper pull frame 21 and the cross beam 11.
[0027] Furthermore, the sliding pair is disposed above and below the first transmission rod 32. The two sliding pairs increase the range covered by the sliding connection between the processing head 2 and the crossbeam 11, thereby further improving the connection stability between the processing head 2 and the crossbeam 11.
[0028] In some embodiments, a hollow hole is provided in the middle of the upper pull frame 21. The hole can reduce the mass of the upper pull frame 21 and reduce the production cost of the upper pull frame 21.
[0029] In some embodiments, the upper bracket 21 is provided with a plurality of reinforcing ribs at intervals, which can enhance the anti-deformation capability of the upper bracket 21 and thus improve the structural stability of the upper bracket 21.
[0030] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.
Claims
1. A high stability CNC machine tool, characterized in that: include: A base (1) connected to a crossbeam (11); A processing machine head (2) is slidably connected to one side of the cross beam (11) in the left-right direction, and an upper pull frame (21) is connected to the top of the processing machine head (2). The upper pull frame (21) extends obliquely toward the base (1), and the upper pull frame (21) is slidably connected to the top side of the cross beam (11) in the left-right direction; A driving device (3) is arranged on the crossbeam (11); the driving device (3) is transmission-connected to the processing head (2); and the driving device (3) drives the processing head (2) to move in the left-right direction.
2. A high stability CNC machine tool according to claim 1, characterized in that: The top side of the crossbeam (11) is provided with a first dovetail guide rail (111) extending in the left-right direction, and the bottom side of the upper pull frame (21) is provided with a first dovetail guide groove extending in the left-right direction, and the first dovetail guide rail (111) and the first dovetail guide groove are mutually matched and connected.
3. A high stability CNC machine tool according to claim 2, characterized in that: A downwardly protruding clamping block is formed at the end of the upper pull frame (21) close to the processing head (2), and the processing head (2) is provided with an upwardly disposed clamping slot, and the clamping block is inserted downwardly into the clamping slot.
4. A high stability CNC machine tool according to claim 1, characterized in that: The driving device (3) comprises a driving motor (31), a first transmission rod (32) and a transmission seat, wherein two ends of the first transmission rod (32) are rotatably connected to a side of the crossbeam (11) facing the processing head (2), the transmission seat is connected to the first transmission rod (32) by means of threads, the processing head (2) is connected to the transmission seat, and the driving motor (31) is transmission-connected to the first transmission rod (32).
5. A high stability CNC machine tool according to claim 4, characterized in that: The driving device (3) further comprises a second transmission rod (33), a first transmission gear (34), a second transmission gear (35) and a driving gear (36); the driving gear (36) is connected to the output end of the driving motor (31); the first transmission gear (34) is synchronously connected to the first transmission rod (32); the second transmission rod (33) is rotatably connected to the top side of the crossbeam (11); the second transmission rod (33) passes through the upper pull frame (21) and is threadedly connected to the upper pull frame (21); the second transmission gear (35) is synchronously connected to the second transmission rod (33); the first transmission gear (34) and the second transmission gear (35) are respectively meshed with the upper and lower sides of the driving gear (36).
6. A high stability CNC machine tool according to claim 5, characterized in that: A sliding pair is provided between the processing head (2) and the cross beam (11), and the sliding pair includes a second dovetail guide rail (22) and a second dovetail guide groove. The second dovetail guide rail (22) is connected to the side of the cross beam (11) facing the processing head (2), and the second dovetail guide groove is provided on the side of the processing head (2) facing the cross beam (11). The second dovetail guide rail (22) and the second dovetail guide groove are connected to each other in a cooperative manner.
7. A high stability CNC machine tool according to claim 6, characterized in that: The sliding pair is arranged above and below the first transmission rod (32).
8. The high stability CNC machine tool according to claim 1, characterized in that: A hollow hole is arranged in the middle of the upper pull frame (21).
9. The high stability CNC machine tool according to claim 1, characterized in that: The upper pull frame (21) is provided with a plurality of reinforcing ribs at intervals.