Linear motor guide rail dustproof device for numerical control system
By designing a dustproof cover and an air outlet assembly for the linear motor guide rail, the problem of slider jamming caused by dust diffusion was solved, achieving stable operation and high-precision motion of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-14
AI Technical Summary
The particulate dust generated during the grinding process has strong diffusion properties. It disperses and adheres to the gap between the slide rail and the slider, which increases the sliding resistance and causes the slider to jam.
Design a dustproof device for linear motor guide rails in CNC systems, including a dust cover and an air outlet assembly. The dust cover blocks dust through structural design, and the air outlet assembly forms a unidirectional airflow barrier. It uses gravity and airflow characteristics to prevent dust from entering the guide rail area and carries suspended dust to the collection area.
It effectively blocks and removes dust, ensuring the stability and reliability of equipment operation, preventing slider jamming, and maintaining smooth movement and positioning accuracy.
Smart Images

Figure CN224487111U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of linear motor guide rail technology, and in particular to a dustproof device for linear motor guide rails used in CNC systems. Background Technology
[0002] Linear motor guide rails for CNC systems are precision mechanical transmission components that combine the electromagnetic drive principle of linear motors with the guiding and supporting functions of guide rails. They achieve linear motion directly without intermediate transmission links through the electromagnetic force between the primary and secondary windings of the linear motor. At the same time, the high-precision guiding structure of the guide rails ensures the straightness, stability and positioning accuracy of the motion, which can meet the needs of CNC systems for high-speed, high-precision and high dynamic response motion control.
[0003] During the operation of a grinding machine, the particulate dust generated by the grinding process has strong diffusion properties. It can disperse and adhere to the mating gap between the slide rail and the slider, damaging the originally precise contact surface of the moving pair. When the slider reciprocates along the slide rail, the dust particles become an obstacle to mechanical movement, causing a sudden increase in the slider's running resistance, which in turn leads to sliding jamming. Utility Model Content
[0004] The purpose of this invention is to address the problem that the particulate dust generated during the grinding process has strong diffusion properties, which can disperse and adhere to the gap between the slide rail and the slider, becoming an obstacle to mechanical movement, causing a sudden increase in the slider's running resistance, and thus leading to the problem of sliding jamming. Therefore, a dustproof device for linear motor guide rails in CNC systems is proposed.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a dustproof device for a linear motor guide rail in a CNC system, comprising a base plate, a linear motor fixedly mounted in the middle of the base plate, slide rails on both sides of the linear motor body, a slider slidably connected to the outer side of the slide rails, a drive plate fixedly connected to one side of the slider, a drive end of the linear motor body fixedly connected to the middle of one side of the drive plate, a dustproof cover fixedly mounted on one side of the base plate, the linear motor body and the slide rails being disposed inside the dustproof cover, a groove being provided on the top surface of the dustproof cover, an adjustment groove being provided on both sides of the groove, mounting blocks being fixedly connected to both ends of the drive plate, a transmission plate being fixedly connected to one side of the two mounting blocks, one end of the transmission plate movably penetrating through the interior of the adjustment groove and fixedly connected to the mounting plate, and air outlet components being fixedly mounted on both sides inside the dustproof cover, with the output end of the air outlet components facing one side of the adjustment groove.
[0006] Preferably, mounting holes are provided at the four corners of the mounting plate.
[0007] Preferably, the air outlet assembly includes an air guide chamber and an air guide duct. The output end of the air guide duct is fixedly connected to the input end of the air guide chamber. An air outlet is provided on one side of the air guide chamber, and the air outlet faces the side of the regulating groove.
[0008] Preferably, positioning plates are fixedly connected to both sides of the dust cover.
[0009] Preferably, the positioning plate has a positioning hole inside, and a positioning bolt moves through the positioning hole.
[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0011] 1. In this utility model, the dust cover, thanks to its structural design characteristics, can effectively block most dust, preventing it from intruding into the slide rail area. The port of the adjustment groove facing the external environment is designed with a special downward tilt. Based on the principle of gravity, naturally falling dust is guided by this structure and cannot enter the interior of the adjustment groove, thereby achieving effective dust removal protection for key moving parts and ensuring the stability and reliability of equipment operation.
[0012] 2. In this invention, the air duct continuously delivers air into the air chamber, and through a rationally arranged air outlet, the air is blown out at a specific angle and speed towards one side of the regulating trough, forming a stable unidirectional airflow barrier at the port of the regulating trough. This airflow barrier not only actively intercepts fine dust particles attempting to enter the dust cover with the airflow, but also utilizes the flow characteristics of the airflow to carry suspended dust particles near the regulating trough to a designated dust collection area, preventing dust from accumulating around the equipment. Attached Figure Description
[0013] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a dustproof device for a linear motor guide rail in a CNC system;
[0014] Figure 2 This utility model provides a three-dimensional structural diagram of the internal structure of a dustproof device for a linear motor guide rail in a CNC system.
[0015] Figure 3 This utility model provides a schematic diagram illustrating the positional relationship between the mounting plate and the dust cover in a dustproof device for a linear motor guide rail in a CNC system.
[0016] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle;
[0017] Figure 5 for Figure 3 A magnified view of a portion of point B in the middle.
[0018] Legend: 1. Base plate; 2. Linear motor body; 3. Slide rail; 31. Slider; 4. Drive plate; 41. Mounting block; 42. Transmission plate; 5. Dust cover; 51. Slide groove; 52. Adjustment groove; 53. Positioning plate; 54. Positioning hole; 6. Mounting plate; 61. Mounting hole; 7. Air outlet assembly; 71. Air guide chamber; 72. Air guide duct; 73. Air outlet. Detailed Implementation
[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0021] Example 1: As Figures 1-5 As shown, this utility model provides a dustproof device for a linear motor guide rail in a CNC system, including a base plate 1. A linear motor is fixedly installed in the middle of the base plate 1. Slide rails 3 are provided on both sides of the linear motor body 2. A slider 31 is slidably connected to the outer side of the slide rails 3. A drive plate 4 is fixedly connected to one side of the slider 31. The drive end of the linear motor body 2 is fixedly connected to the middle of one side of the drive plate 4. A dustproof cover 5 is fixedly installed on one side of the base plate 1. The linear motor body 2 and the slide rails 3 are disposed inside the dustproof cover 5. A groove 51 is opened on the top surface of the dustproof cover 5, and grooves are opened on both sides of the groove 51. The adjustment groove 52 and the drive plate 4 are fixedly connected to the two ends of the mounting block 41. The two mounting blocks 41 are fixedly connected to one side of the transmission plate 42. One end of the transmission plate 42 is movably inserted through the interior of the adjustment groove 52 and is fixedly connected to the mounting plate 6. The dust cover 5 is fixedly installed on both sides of the interior. The output end of the air outlet component 7 faces one side of the adjustment groove 52. The four corners of the mounting plate 6 are respectively provided with mounting holes 61. The two sides of the dust cover 5 are fixedly connected to the positioning plate 53. The positioning plate 53 is provided with positioning holes 54. The positioning holes 54 are movably inserted through the interior of the positioning holes 54.
[0022] The specific settings and functions of this embodiment are described below. The linear motor body 2 drives the drive plate 4 and the slider 31 to perform linear reciprocating motion along the outer side of the slide rail 3 through power transmission. During this process, the drive plate 4 further drives the transmission plate 42 and the mounting plate 6 to complete directional sliding within the adjustment groove 52 and the slide groove 51, respectively. When the grinding machine generates particulate dust during operation and it spreads and falls in all directions, the dust cover 5, due to its structural design characteristics, can effectively block most of the dust, preventing it from entering the area of the slide rail 3. The port of the adjustment groove 52 facing the external environment has a special downward tilt angle design. Based on the principle of gravity, naturally falling dust is guided by this structure and cannot enter the interior of the adjustment groove 52, thereby achieving effective dust removal protection for key moving parts and ensuring the stability and reliability of equipment operation.
[0023] Example 2: Figures 1-5 As shown, the dustproof device for linear motor guide rails in the CNC system of this utility model includes a base plate 1. A linear motor is fixedly installed in the middle of the base plate 1. Slide rails 3 are provided on both sides of the linear motor body 2. A slider 31 is slidably connected to the outer side of the slide rails 3. A drive plate 4 is fixedly connected to one side of the slider 31. The drive end of the linear motor body 2 is fixedly connected to the middle of one side of the drive plate 4. A dustproof cover 5 is fixedly installed on one side of the base plate 1. The linear motor body 2 and the slide rails 3 are located inside the dustproof cover 5. A groove 51 is opened on the top surface of the dustproof cover 5. Adjustment grooves are opened on both sides of the groove 51. 52. Mounting blocks 41 are fixedly connected to both ends of the drive plate 4. A transmission plate 42 is fixedly connected to one side of the two mounting blocks 41. One end of the transmission plate 42 is movably inserted through the interior of the adjustment groove 52 and is fixedly connected to the mounting plate 6. Air outlet components 7 are fixedly installed on both sides inside the dust cover 5. The output end of the air outlet component 7 faces one side of the adjustment groove 52. The air outlet component 7 includes an air guide chamber 71 and an air guide pipe 72. The output end of the air guide pipe 72 is fixedly connected to the input end of the air guide chamber 71. An air outlet 73 is opened on one side of the air guide chamber 71, and the air outlet 73 faces one side of the adjustment groove 52.
[0024] The overall effect of this embodiment is that the air duct 72 continuously delivers air into the air chamber 71, and through the rationally arranged air outlets 73, the air is blown out towards one side of the regulating trough 52 at a specific angle and speed, forming a stable unidirectional airflow barrier at the port of the regulating trough 52. This airflow barrier can not only actively intercept fine dust particles attempting to enter the dust cover 5 with the airflow, but also utilize the flow characteristics of the airflow to carry dust particles suspended near the regulating trough 52 to a designated dust collection area, preventing dust from accumulating around the equipment.
[0025] The device's operation and working principle are as follows: The linear motor body 2 drives the drive plate 4 and slider 31 to reciprocate linearly along the outside of the slide rail 3 via power transmission. During this process, the drive plate 4 further drives the transmission plate 42 and mounting plate 6 to slide directionally within the adjustment groove 52 and slide groove 51, respectively. The dust cover 5, due to its structural design, can effectively block most dust, preventing it from entering the slide rail 3 area. The port of the adjustment groove 52 facing the external environment has a special downward-sloping angle design. Based on the principle of gravity, naturally falling dust is guided by this structure and cannot enter the interior of the adjustment groove 52. The air duct 72 continuously delivers air into the air chamber 71, which is then blown out towards one side of the adjustment groove 52 at a specific angle and speed through the reasonably arranged air outlet 73, forming a stable unidirectional airflow barrier at the port of the adjustment groove 52.
[0026] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.
Claims
1. A dustproof device for a linear motor guide rail in a CNC system, comprising a base plate (1), a linear motor fixedly mounted in the middle of the base plate (1), slide rails (3) provided on both sides of the linear motor body (2), a slider (31) slidably connected to the outer side of the slide rails (3), a drive plate (4) fixedly connected to one side of the slider (31), and the drive end of the linear motor body (2) fixedly connected to the middle of one side of the drive plate (4), characterized in that: A dust cover (5) is fixedly installed on one side of the base plate (1). The linear motor body (2) and the slide rail (3) are set inside the dust cover (5). A slide groove (51) is opened on the top surface of the dust cover (5). An adjustment groove (52) is opened on both sides of the slide groove (51). Mounting blocks (41) are fixedly connected to both ends of the drive plate (4). A transmission plate (42) is fixedly connected to one side of the two mounting blocks (41). One end of the transmission plate (42) moves through the interior of the adjustment groove (52) and is fixedly connected to the mounting plate (6). An air outlet assembly (7) is fixedly installed on both sides inside the dust cover (5). The output end of the air outlet assembly (7) faces one side of the adjustment groove (52).
2. The dustproof device for linear motor guide rails in a CNC system according to claim 1, characterized in that: Mounting holes (61) are provided at the four corners of the mounting plate (6).
3. The dustproof device for linear motor guide rails in a CNC system according to claim 1, characterized in that: The air outlet assembly (7) includes an air guide chamber (71) and an air guide pipe (72). The output end of the air guide pipe (72) is fixedly connected to the input end of the air guide chamber (71). An air outlet (73) is opened on one side of the air guide chamber (71), and the air outlet (73) is directly opposite the side of the regulating groove (52).
4. A dustproof device for linear motor guide rails in a CNC system according to claim 1, characterized in that: Positioning plates (53) are fixedly connected to both sides of the dust cover (5).
5. A dustproof device for linear motor guide rails in a CNC system according to claim 4, characterized in that: The positioning plate (53) has a positioning hole (54) inside, and a positioning bolt moves through the positioning hole (54).