High-precision machine tool
By designing a tilting bed and drive components for the reciprocating motion of the Z and E axes, the machine tool vibration problem was solved, machining efficiency and accuracy were improved, and the machine tool achieved high rigidity and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-03-24
AI Technical Summary
The flat bed design of existing machine tools causes the cutting force between the tool and the workpiece to be at a 90° angle to gravity, resulting in vibration and reducing cutting rigidity and machining accuracy.
The machine tool adopts an inclined bed design and is equipped with a machining spindle and cutter head device on the bed. Combined with the drive components for the reciprocating motion of the Z-axis and E-axis, it ensures that the cutting force is consistent with the direction of the workpiece's gravity, thereby improving the machine tool's resistance to bending and torsion.
It improves the machining efficiency and precision of machine tools, reduces cutting vibration, and ensures smooth operation of the machining spindle.
Smart Images
Figure CN224027136U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of machine tool design, more particularly to a kind of high-precision machine tool. BACKGROUND
[0002] Machine tool is the basis of modern industrial design, and the precision of machine tool will directly affect the quality of processing products, and the composition of machine tool generally includes power source, transmission system, supporting member, control system and cooling system etc., and currently most machine tools are flat bed, which not only has less tool positions and poor processing efficiency, but also the cutting force generated by tool and workpiece is 90° with the gravity of workpiece when cutting, which easily causes vibration, resulting in poor cutting rigidity and processing precision. SUMMARY
[0003] The main purpose of the utility model is to provide a machine tool capable of improving processing efficiency and processing precision.
[0004] To achieve the above purpose, the technical scheme of the utility model is as follows:
[0005] A kind of high-precision machine tool, including machine tool body and the machining part arranged on the machine tool body, the machining part includes the machining main shaft arranged along Z axis direction and the movable tailstock corresponding with the machining main shaft, the machine tool body includes the bed body arranged obliquely and the cutter head device arranged on the end surface of the bed body and can reciprocate along Z axis and E axis respectively.
[0006] According to the first aspect embodiment of the utility model, the bed body is further provided with a first driving assembly for driving the cutter head device to reciprocate along Z axis.
[0007] According to the first aspect embodiment of the utility model, the first driving assembly includes a first driving motor arranged transversely and a first ball screw arranged at the output end of the first driving motor, and the other end of the first ball screw is provided with a sliding plate for mounting the cutter head device.
[0008] According to the first aspect embodiment of the utility model, the sliding plate is arranged along E axis direction, and the lower end surface of the sliding plate is provided with two first sliding grooves at intervals, and two first sliding rails corresponding to the first sliding grooves are arranged at intervals along the length direction of the bed body.
[0009] According to the first aspect embodiment of the utility model, the cutter head device includes a tool magazine arranged on the sliding plate and a cutter head arranged on one side of the tool magazine, and a plurality of tool positions are arranged at intervals on the cutter head.
[0010] According to the first aspect embodiment of the utility model, the second driving assembly for driving the cutter head device to reciprocate along E axis is arranged between the tool magazine and the sliding plate.
[0011] According to the first aspect of the utility model, the second driving assembly includes two second sliding rails arranged on the upper end surface of the slide plate along the E axis and two second sliding grooves corresponding to the second sliding rails and arranged at intervals on the lower end surface of the tool magazine.
[0012] According to the first aspect of the utility model, the included angle between the E axis and the X axis is 30°.
[0013] According to the first aspect of the utility model, the machining spindle is provided with a protective cover, one end of the machining spindle away from the movable tailstock is provided with a second driving motor, and the other end of the machining spindle is provided with a clamp assembly.
[0014] According to the first aspect of the utility model, the movable tailstock includes a servo motor and a backing plate arranged at the output end of the servo motor, and the upper end surface of the backing plate is provided with a center point corresponding to the machining spindle.
[0015] The above technical solution of the utility model has at least one of the following advantages or beneficial effects:
[0016] The utility model discloses a machining spindle and a cutter head device arranged on the bed body, so that the bending and torsion resistance of the machine tool can be improved, the direction of cutting force is consistent with the direction of the gravity of the workpiece, the machining spindle runs stably, and the machining efficiency and machining precision are further improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] The utility model will be further described below in combination with the drawings and examples.
[0018] ATTACHED Figure 1 It is the overall structural drawing of one embodiment of the utility model.
[0019] ATTACHED Figure 2 It is the front view of one embodiment of the utility model.
[0020] ATTACHED Figure 3 It is the side view of one embodiment of the utility model.
[0021] ATTACHED Figure 4 It is the top view of one embodiment of the utility model. DETAILED DESCRIPTION
[0022] The embodiments of the utility model will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as the limitation of the utility model.
[0023] In the description of the utility model, it needs to be understood that, if the direction description, such as the direction or positional relation indicated by up, down, front, back, left, right etc. based on the direction or positional relation shown in the drawing, is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as the limitation of the utility model.
[0024] In the description of the utility model, the meaning of several is one or more, and the meaning of multiple is more than two, and greater than, less than, more than etc. are understood as not including the number, and above, below, within etc. are understood as including the number.If it is described to the first, second, it is only used for distinguishing technical features for the purpose, and therefore cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0025] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features.
[0026] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection or movable connection, or detachable connection or non-detachable connection, or integrally connected, can be mechanical connection, or electrical connection or can communicate with each other, can be directly connected, or indirectly connected through intermediate medium, can be the internal communication of two elements, indirect communication or the interaction relationship of two elements.
[0027] The following disclosure provides many different embodiments or examples for realizing different schemes of the utility model.
[0028] Referring to the drawings Figure 1 to the drawings Figure 4 As shown in the drawings, a high-precision machine tool comprises a machine tool body 1, a machining part 2 arranged on the machine tool body 1, a cutter head device 3, a first driving assembly for driving the cutter head device 3 to reciprocate along the Z-axis, and a second driving assembly for driving the cutter head device 3 to reciprocate along the E-axis, the X-axis adopts a C1 grade ball screw, the Z-axis and the E-axis both adopt a C2 grade ball screw, and the diameters of the Z-axis and the E-axis are both 40 mm.
[0029] In one embodiment of the utility model, processing portion 2 includes the processing main shaft 21 along Z axle direction setup and with the processing main shaft 21 corresponding set up movable tailstock 22, the processing main shaft 21 is high rigidity main shaft, and the runout is less than 1 μ, and adopts grease lubrication, further reduce friction resistance.
[0030] In one embodiment of the utility model, the protective cover is arranged on the processing main shaft 21, so that the service life of the processing main shaft 21 is further ensured, a second driving motor 7 with high power is arranged at one end of the processing main shaft 21 away from the movable tailstock 22, so that the maximum rotating speed and cutting torque are further improved, and a clamp assembly 8 is arranged at the other end of the processing main shaft 21, and the clamp assembly 8 is a three-jaw chuck.
[0031] In one embodiment of the utility model, the machine tool body 1 includes a bed 11 arranged obliquely and a tool disc device 3 arranged on the upper end surface of the bed 11 and capable of reciprocating along the Z axis and the E axis, wherein the included angle between the E axis and the X axis is 30°, that is, the bed 11 adopts a 30° integral inclined bed, and the bed 11 is made of an HT300 material member and is cast to ensure the rigidity of hard turning. Not only the cross-sectional area is larger than that of a flat bed of the same specification, but also the bending and torsional resistance is stronger, and the cutting force is basically consistent with the direction of the gravity of the workpiece, so that the processing main shaft 21 rotates relatively stably and is not easy to cause cutting vibration, and the chip removal is facilitated during processing.
[0032] In one embodiment of the utility model, the tool disc device 3 includes a tool magazine 31 arranged on the sliding plate 5 and a tool disc 32 arranged on one side of the tool magazine 31, twelve installation tool positions are arranged on the tool disc 32 at intervals, and a servo motor is adopted for control, and the side cutter is 25 mm and the boring cutter is 40 mm.
[0033] In one embodiment of the utility model, the first driving assembly is arranged on the upper end surface of the bed 11, and the first driving assembly includes a first driving motor 41 arranged transversely and a first ball screw 42 arranged on the output end of the first driving motor 41, and the other end of the first ball screw 42 is provided with a sliding plate 5 for mounting the tool disc device 3, and the first driving motor 41 drives the tool disc device 3 to reciprocate along the Z axis.
[0034] In one embodiment of the utility model, the sliding plate 5 is arranged along the E axis, two first sliding grooves are arranged at intervals on the lower end surface of the sliding plate 5, two first sliding rails 43 corresponding to the first sliding grooves are arranged at intervals along the length direction of the bed 11, the first sliding rail 43 adopts a 45 roller heavy load linear guide rail, and the X axis and the Z axis both adopt a grating ruler with a size of 10 nm, and full closed loop control is adopted to ensure the stability of continuous processing.
[0035] In one embodiment of the utility model, the second driving assembly is arranged between the tool magazine 31 and the sliding plate 5, the second driving assembly comprises two second sliding rails 61 arranged along the E axis on the upper end surface of the sliding plate 5 and two second sliding grooves corresponding to the second sliding rails 61 and arranged at intervals on the lower end surface of the tool magazine 31, wherein the second sliding rails 61 adopt 45 roller heavy load linear guides.
[0036] In one embodiment of the utility model, the movable tailstock 22 comprises a servo motor 221 and a backing plate 222 arranged at the output end of the servo motor 221, that is, modular design is adopted, by increasing the backing plate 222, without changing the backing plate, the sub-spindle, the movable tailstock 22 and other components, the servo tailstock can be applicable to different specifications, and the sub-spindle structure.
[0037] In one embodiment of the utility model, the upper end surface of the backing plate 222 is provided with a center 223 corresponding to the machining spindle 21, the E axis of the movable tailstock 22 adopts the same guide and screw structure as the Z axis, and is equipped with a high-power motor drive, so as to ensure the optimal rigidity and precision, and the position and clamping force of the movable tailstock 22 can be programmed and set.
[0038] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, the scope of the utility model is defined by the claims and their equivalents.
Claims
1. A high-precision machine tool, characterized by comprising: The machine tool body (1) and the machining part (2) arranged on the machine tool body (1), the machining part (2) includes a machining spindle (21) arranged along the Z-axis direction and a movable tailstock (22) arranged corresponding to the machining spindle (21), the machine tool body (1) includes a bed (11) arranged obliquely and a tool disc device (3) arranged on the upper end surface of the bed (11) and capable of reciprocating along the Z-axis and the E-axis respectively.
2. The high precision machine tool according to claim 1, characterized in that: The bed (11) is further provided with a first driving assembly for driving the tool disc device (3) to reciprocate along the Z-axis.
3. The high precision machine tool according to claim 2, characterized in that: The first driving assembly includes a first driving motor (41) arranged transversely and a first ball screw (42) arranged at the output end of the first driving motor (41), and the other end of the first ball screw (42) is provided with a sliding plate (5) for mounting the tool disc device (3).
4. A high precision machine tool according to claim 3, characterized in that: The sliding plate (5) is arranged along the E-axis direction, and two first sliding grooves are arranged at the lower end surface of the sliding plate (5) in a spaced manner, and two first sliding rails (43) corresponding to the first sliding grooves are arranged along the length direction of the bed (11) in a spaced manner.
5. The high precision machine tool according to claim 3, characterized in that: The tool disc device (3) includes a tool magazine (31) arranged on the sliding plate (5) and a tool disc (32) arranged on one side of the tool magazine (31), and a plurality of tool mounting positions are arranged on the tool disc (32) in a spaced manner.
6. A high precision machine tool according to claim 5, characterized in that: The tool magazine (31) and the sliding plate (5) are provided with a second driving assembly for driving the tool disc device (3) to reciprocate along the E-axis.
7. A high precision machine tool according to claim 6, characterised in that: The second driving assembly includes two second sliding rails (61) arranged along the E-axis at the upper end surface of the sliding plate (5) and two second sliding grooves arranged in a spaced manner at the lower end surface of the tool magazine (31) and corresponding to the second sliding rails (61).
8. The high precision machine tool according to claim 1, characterized in that: The included angle between the E-axis and the X-axis is 30°.
9. The high precision machine tool according to claim 1, characterized in that: The machining spindle (21) is provided with a protective cover, and the machining spindle (21) is provided with a second driving motor (7) at the end away from the movable tailstock (22), and the other end of the machining spindle (21) is provided with a clamp assembly (8).
10. A high precision machine tool according to claim 9, characterized in that: The movable tailstock (22) includes a servo motor (221) and a backing plate (222) arranged at the output end of the servo motor (221), and the upper end surface of the backing plate (222) is provided with a center (223) corresponding to the machining spindle (21).