Laser cutting machine Z-axis mechanism and laser cutting machine
By using bolt connections and epoxy-modified adhesive bonding in the Z-axis module of the laser cutting machine, the problems of welding deformation and poor dynamic performance were solved, thereby improving cutting accuracy and dynamic response performance.
Patent Information
- Application Number
- CN202423249001.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The welding method of the existing laser cutting machine Z-axis module leads to welding deformation and poor dynamic performance, which affects the cutting accuracy.
The combination of bolted connection and epoxy modified adhesive bonding replaces the traditional welding connection between the Y-axis motor mounting bracket and the Z-axis guide rail mounting plate of the slide saddle body, avoiding welding thermal stress and deformation, and improving the bonding strength and vibration resistance.
It improves the cutting accuracy and dynamic response performance of laser cutting machines, reduces the impact of welding stress deformation, and enhances the rigidity and stability of structures.
Smart Images
Figure CN223776242U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of laser processing equipment technology, specifically relating to a Z-axis mechanism of a laser cutting machine and a laser cutting machine. Background Technology
[0002] Compared to traditional material cutting equipment, CNC laser cutting machines offer advantages such as lower noise (or even zero noise), finer kerf, higher cutting precision, and better cut surface quality. Therefore, they are widely used in various engineering fields, such as nuclear power equipment manufacturing, shipbuilding, and the automotive industry. Laser cutting equipment is also one of the mechanical equipment with the greatest development potential currently.
[0003] According to research and experiments, the main sources of cutting accuracy error in laser cutting machines include positioning error, servo control error, force deformation error, and thermal deformation error. Among them, force deformation error includes cutting force transmission and insufficient component rigidity. The weight and structural performance of the Z-axis module mounted on the crossbeam of the cutting equipment have a great impact on cutting accuracy. This module is responsible for feeding the cutting head, and the rigidity of its structure directly determines the level of workpiece cutting accuracy.
[0004] Currently, the main structure of the Z-axis of a common laser cutting machine is generally made of welded steel plates and aluminum plates. The slide saddle is connected to the Y-axis drive motor mounting bracket by welding. The common problem is that in order to reduce the load, the mounting bracket of the Y-axis motor is made as light as possible. Welding its thin-walled parts can cause problems such as welding deformation, machining tool deflection, and post-weld deformation. However, choosing a thicker structure will increase the load mass and seriously affect the overall dynamic response performance. Utility Model Content
[0005] To address the deficiencies in the prior art, this application provides a Z-axis mechanism for a laser cutting machine and a laser cutting machine, effectively solving the problems that in existing cutting machine equipment, if the Y-axis motor mounting bracket and slide saddle are connected by welding with thin-walled parts, the welding stress will be large, the welding deformation will be large, and the structural performance will be affected. On the other hand, if thick plates are used for welding, the dynamic performance will be poor.
[0006] According to one aspect of this application, a Z-axis mechanism for a laser cutting machine is provided, comprising a slide saddle body, the slide saddle body including a Z-axis guide rail mounting plate and a Y-axis motor mounting bracket, a bracket mounting groove being provided on one side of the top of the Z-axis guide rail mounting plate, and a bracket flange portion being provided on one side of the Y-axis motor mounting bracket and being glued to the bracket mounting groove, the bracket flange portion having multiple bracket mounting holes and being respectively connected and fixed to the top of the Z-axis guide rail mounting plate by bolts passing through each bracket mounting hole.
[0007] Furthermore, the bracket flange and the bracket mounting groove are bonded together with epoxy modified adhesive.
[0008] Furthermore, a Z-axis drive mechanism is vertically mounted in the middle of the other side of the Z-axis guide rail mounting plate, and Z-axis guide rails are symmetrically mounted on both sides. Z-axis sliders that are symmetrically connected to the Z-axis drive mechanism are respectively arranged on the two Z-axis guide rails.
[0009] Furthermore, the Z-axis drive mechanism includes a Z-axis drive motor fixedly mounted on the top of the Z-axis guide rail mounting plate. The output end of the Z-axis drive motor is connected to a lead screw. Several nut seats are movably arranged on the lead screw. A slide is connected to the nut seats. The slide is fixedly connected to the Z-axis sliders on both sides of the Z-axis guide rail. When the Z-axis drive motor drives the lead screw to rotate forward or backward, it drives the nut seats to move forward or backward on the lead screw, thereby driving the slide to move forward or backward on the Z-axis guide rail via the Z-axis sliders.
[0010] Furthermore, two guide rail mounting bosses are symmetrically arranged on the other side of the Z-axis guide rail mounting plate, and the two Z-axis guide rails are respectively fixedly mounted on the guide rail mounting bosses.
[0011] Furthermore, multiple guide rail clamping blocks are evenly installed on one side of each of the two guide rail mounting bosses, and there are two Z-axis sliders on each Z-axis guide rail.
[0012] Furthermore, there are two nut seats that are movable on the lead screw and connected to the slide.
[0013] Furthermore, the slide is equipped with a guide rail lubrication device on one side of the Z-axis guide rail.
[0014] Furthermore, it also includes a sensing device, which includes a proximity sensor fixedly mounted on a Z-axis guide rail mounting plate on one side of the Z-axis guide rail and a sensing plate provided on the slide.
[0015] Furthermore, multiple Y-axis sliders are evenly mounted on the Z-axis guide rail mounting plate.
[0016] According to another aspect of this application, a laser cutting machine is provided, which includes the laser cutting machine Z-axis mechanism described in the above technical solution, wherein a cutting head is movably mounted on the Z-axis guide rail mounting plate, and a Y-axis drive motor is mounted on the Y-axis motor mounting bracket.
[0017] Compared with the prior art, the Z-axis mechanism and laser cutting machine of this application have the following advantages:
[0018] (1) The improved structure of this utility model is simple and reasonable. The Y-axis motor mounting bracket and the top of the Z-axis guide rail mounting plate of the slide saddle body are connected by bolts and bonded with epoxy modified adhesive. Its advantage is that the cold working process does not have the problems of welding thermal stress deformation and welding stress concentration.
[0019] (2) The present invention uses the Y-axis motor mounting bracket and the Z-axis guide rail mounting plate to bond together, which has high bonding strength, the bonding surface can improve the surface energy level, and the glue groove gap can improve the bonding strength. At the same time, the glue can suppress the transmission of motor structure vibration, improve or avoid the accuracy error caused by resonance vibration, and the glue layer provides a small range of elastic-adaptive rack meshing, reducing meshing impact. Attached Figure Description
[0020] Figure 1-2 These are schematic diagrams of the present invention from different perspectives;
[0021] Figure 3-4 This is a schematic diagram of the sliding saddle body in this utility model;
[0022] Figure 5 This is a schematic diagram of the main body of the sliding saddle in this utility model (excluding the slide plate);
[0023] Figure 6-7 This is a schematic diagram of the connection between the Z-axis guide rail mounting plate and the Y-axis motor mounting bracket from different perspectives in this utility model;
[0024] In the diagram: 1. Y-axis drive motor; 2. Cutting head; 3. Saddle body; 31. Z-axis guide rail mounting plate; 311. Guide rail mounting boss; 312. Bracket mounting slot; 32. Y-axis motor mounting bracket; 321. Bracket flange; 322. Bracket mounting hole; 33. Z-axis drive mechanism; 331. Z-axis drive motor; 332. Active end bearing seat; 333. Nut seat; 334. Lead screw; 335. Follower end bearing seat; 34. Z-axis guide rail; 35. Z-axis slider; 36. Slide; 37. Guide rail clamping block; 38. Guide rail lubrication device; 39. Sensing device; 391. Proximity sensor; 392. Sensing plate; 310. Y-axis slider. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this disclosure pertains. The terms "upper," "lower," "left," "right," "front," "back," "inside," and "outside" used in the present patent application specification and claims are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Any aspects not detailed in the present utility model are well-known technologies to those skilled in the art.
[0026] Example 1:
[0027] like Figure 1-7 As shown, this application discloses a Z-axis mechanism for a laser cutting machine, comprising a slide saddle body 3. The slide saddle body 3 includes a Z-axis guide rail mounting plate 31 and a Y-axis motor mounting bracket 32. The Z-axis guide rail mounting plate 31 is used to mount the Z-axis drive mechanism and connect the cutting head. The Y-axis motor mounting bracket 32 is used to mount the Y-axis motor. A bracket mounting groove 312 is provided on one side of the top of the Z-axis guide rail mounting plate 31. A bracket flange 321 adapted to the bracket mounting groove 312 is provided on one side of the Y-axis motor mounting bracket 32 and is glued to the bracket mounting groove 312. The bracket flange 321 has multiple bracket mounting holes 322, and bolts are passed through each bracket mounting hole 322 to connect and fix it to the top of the Z-axis guide rail mounting plate 31. In this embodiment, the bracket flange 321 and the bracket mounting groove 312 are connected by a combination of adhesive bonding and bolt connection, effectively solving the defects of the original welding method. As a preferred embodiment, the bracket flange 321 and the bracket mounting groove 312 are bonded by epoxy modified adhesive.
[0028] In this embodiment, a Z-axis drive mechanism 33 is vertically mounted in the middle of the other side of the Z-axis guide rail mounting plate 31, and Z-axis guide rails 34 are symmetrically mounted on both sides. The Z-axis drive mechanism 33 includes a Z-axis drive motor 331 fixedly mounted on the top of the Z-axis guide rail mounting plate 31. A lead screw 334 is connected to the output end of the Z-axis drive motor 331. The lead screw 334 is vertically and movably mounted on the Z-axis guide rail mounting plate 31 through a driving end bearing seat 332 and a follower end bearing seat 335. The device is equipped with several nut seats 333, and slides 36 are connected to the nut seats 333. The slides 36 are used to mount the cutting head through the AB axis. Two Z-axis guide rails 34 are symmetrically equipped with Z-axis sliders 35, which are fixedly connected to the slides 36. When the Z-axis drive motor 331 drives the lead screw 334 to rotate in the forward or reverse direction, it drives the nut seats 333 to move forward or backward on the lead screw 334, which in turn drives the slides 36 to move forward or backward on the Z-axis guide rails 34 through the Z-axis sliders 35.
[0029] In a preferred embodiment, two guide rail mounting bosses 311 are symmetrically arranged on the other side of the Z-axis guide rail mounting plate 31, and two Z-axis guide rails 34 are respectively fixedly mounted on the guide rail mounting bosses 311.
[0030] In a preferred embodiment, multiple guide rail clamping blocks 37 are evenly installed on one side of each of the two guide rail mounting bosses 311, which can make fine adjustments to the position of the Z-axis guide rail 34; there are two Z-axis sliders 35 on each Z-axis guide rail 34; there are two nut seats 333 that are movably set on the lead screw 334 and connected to the slide plate 36, so that the operation of the slide plate 36 and the cutting head installed on the slide plate is more stable.
[0031] In a preferred embodiment, the slide plate 36 is equipped with a guide rail lubrication device 38 on one side of the Z-axis guide rail 34 for lubrication between the Z-axis slider 35 and the Z-axis guide rail 34.
[0032] In a preferred embodiment, the mechanism further includes a sensing device 39, which includes a proximity sensor 391 fixedly mounted on a Z-axis guide rail mounting plate 31 on one side of the Z-axis guide rail 34 and a sensing plate 392 provided on the slide plate 36. By setting the sensing device 39, the travel of the slide plate 36 can be limited.
[0033] In this embodiment, a plurality of Y-axis sliders 310 are evenly installed on the Z-axis guide rail mounting plate 31.
[0034] Example 2:
[0035] like Figure 1-7 As shown, this application discloses a laser cutting machine, which includes the laser cutting machine Z-axis mechanism of Embodiment 1. A cutting head 2 is movably mounted on the Z-axis guide rail mounting plate 31, and a Y-axis drive motor 1 is mounted on the Y-axis motor mounting bracket 32.
Claims
1. A Z-axis mechanism for a laser cutting machine, characterized in that, The saddle body (3) includes a Z-axis guide rail mounting plate (31) and a Y-axis motor mounting bracket (32). The Z-axis guide rail mounting plate (31) has a bracket mounting groove (312) on one side of its top. The Y-axis motor mounting bracket (32) has a bracket flange (321) on one side that is compatible with the bracket mounting groove (312) and is glued to the bracket mounting groove (312). The bracket flange (321) has multiple bracket mounting holes (322) and is connected and fixed to the top of the Z-axis guide rail mounting plate (31) by bolts passing through each bracket mounting hole (322).
2. The Z-axis mechanism of a laser cutting machine according to claim 1, characterized in that, The bracket flange (321) and the bracket mounting groove (312) are bonded together by epoxy modified adhesive.
3. The Z-axis mechanism of a laser cutting machine according to claim 1, characterized in that, A Z-axis drive mechanism (33) is vertically installed in the middle of the other side of the Z-axis guide rail mounting plate (31), and Z-axis guide rails (34) are symmetrically installed on both sides. Z-axis sliders (35) that are connected to the Z-axis drive mechanism (33) are symmetrically arranged on the two Z-axis guide rails (34).
4. The Z-axis mechanism of a laser cutting machine according to claim 3, characterized in that, The Z-axis drive mechanism (33) includes a Z-axis drive motor (331) fixedly installed on the top of the Z-axis guide rail mounting plate (31). The output end of the Z-axis drive motor (331) is connected to a lead screw (334). Several nut seats (333) are movably arranged on the lead screw (334). A slide plate (36) is connected to the nut seat (333). The slide plate (36) is fixedly connected to the Z-axis slider (35) on both sides of the Z-axis guide rail (34). When the Z-axis drive motor (331) drives the lead screw (334) to rotate forward or backward, it drives the nut seat (333) to move forward or backward on the lead screw (334), and drives the slide plate (36) to move forward or backward on the Z-axis guide rail (34) through the Z-axis slider (35).
5. The Z-axis mechanism of a laser cutting machine according to claim 4, characterized in that, Two guide rail mounting bosses (311) are symmetrically arranged on the other side of the Z-axis guide rail mounting plate (31), and the two Z-axis guide rails (34) are respectively fixedly installed on the guide rail mounting bosses (311).
6. The Z-axis mechanism of a laser cutting machine according to claim 5, characterized in that, Multiple guide rail clamping blocks (37) are evenly installed on one side of each of the two guide rail mounting bosses (311). There are two Z-axis sliders (35) on each Z-axis guide rail (34), and two nut seats (333) are movably set on the lead screw (334) and connected to the slide plate (36).
7. The Z-axis mechanism of a laser cutting machine according to claim 4, characterized in that, The slide (36) is located on one side of the Z-axis guide rail (34) and a guide rail lubrication device (38) is installed.
8. The Z-axis mechanism of a laser cutting machine according to claim 4, characterized in that, It also includes a sensing device (39), which includes a proximity sensor (391) fixedly mounted on a Z-axis guide rail mounting plate (31) on one side of the Z-axis guide rail (34) and a sensing plate (392) provided on a slide plate (36).
9. The Z-axis mechanism of a laser cutting machine according to claim 1, characterized in that, Multiple Y-axis sliders (310) are evenly installed on the Z-axis guide rail mounting plate (31).
10. A laser cutting machine, characterized in that, The laser cutting machine includes the Z-axis mechanism according to any one of claims 1-9, wherein a cutting head (2) is movably mounted on the Z-axis guide rail mounting plate (31), and a Y-axis drive motor (1) is mounted on the Y-axis motor mounting bracket (32).