High-precision linear slide table

Abstract

The application provides a high-precision linear slide table, belonging to the technical field of linear slide tables, which comprises a base, a slide table mechanism, a shell, a gap, and a limiting assembly. The slide table mechanism is arranged on the base. The shell is arranged on the base. The slide table mechanism is arranged between the base and the shell, so that the shell protects the slide table mechanism. The slide table mechanism has a sliding part extending to the outside of the shell through the gap. The sealing strip on the dustproof belt can be pressed into the inside of the groove through the pressing structure on the slide table mechanism. The cooperation between the sealing strip and the groove can effectively prevent dust from entering the inside of the equipment from between the dustproof belt and the shell. The limiting assembly can then fix the sealing strip, effectively preventing the sealing strip from separating from the inside of the groove and reducing the dustproof effect. The device avoids using magnetic parts, so that the sensor is not interfered with during use, thereby avoiding affecting the precision of the device.

Description

Technical Field

[0001] This invention belongs to the field of linear slide technology, and specifically relates to a high-precision linear slide. Background Technology

[0002] A linear slide is a mechanical structure that provides linear motion. It can be used horizontally or vertically, or combined into specific motion mechanisms—commonly referred to in the automation industry as multi-axis motion mechanisms such as XY-axis and XYZ-axis. This mechanism has different names in different industries; common names include linear slide, electric cylinder, electric slide, robotic arm, and robotic hand. Linear slides are typically used in conjunction with a power motor. By mounting other workpieces on its slide to form a complete conveying motion device and setting a suitable forward and reverse rotation program for the motor, the workpiece can be made to move automatically in a cyclical manner. This achieves the purpose of mass production and intensive manufacturing.

[0003] Chinese Patent CN104842340B discloses a dustproof linear slide, which includes a track base mechanism, a transmission mechanism, a dustproof belt, and a slide base mechanism. The track base mechanism includes a base, a magnetic element mounting component, and a magnetic element. The magnetic element mounting component is mounted on the upper surface of both sides of the base. The upper surface of the magnetic element mounting component has a groove, and the magnetic element is disposed in the groove.

[0004] The above technical solution seals the gaps of the linear slide by setting a dustproof strip, thereby reducing the possibility of dust entering the linear slide. The dustproof strip is also attracted by a magnetic strip, which makes the dustproof strip and the linear slide fit better and further improves the dustproof performance. However, most existing linear slides are equipped with sensors, and magnetic components can easily interfere with the sensors, which can easily affect the accuracy of the linear slide. Summary of the Invention

[0005] The purpose of this invention is to provide a high-precision linear slide, which aims to solve the problem that in the existing dustproof linear slide, magnetic components are used to make the dustproof bag and the linear slide fit better. However, most existing linear slides are equipped with sensors, and magnetic components can easily interfere with the sensors, thus affecting the accuracy of the linear slide.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-precision linear slide, comprising:

[0007] The base and the slide mechanism are mounted on the base.

[0008] A housing is mounted on a base, and the slide mechanism is located between the base and the housing, so that the housing protects the slide mechanism. There is a gap between the base and the housing, and the sliding part of the slide mechanism extends to the outside of the housing through the gap.

[0009] A dustproof strip is provided at both ends on the housing. The dustproof strip can cover the gap between the base and the housing. The dustproof strip passes through the sliding part of the slide mechanism. The sliding part of the slide mechanism is provided with a pressing structure. The pressing structure can press the dustproof strip into contact with the housing and the base.

[0010] A sealing strip is provided on the side of the dustproof strip near the housing. Both the housing and the base are provided with grooves for accommodating the sealing strip. When the dustproof strip and the housing are in contact, the sealing strip is located inside the groove.

[0011] A limiting component is provided on the housing and the base. When the pressing structure presses the sealing strip into the groove, the limiting component can fix the sealing strip. The sliding part can cause the sealing strip located at the sliding part to disengage from the groove.

[0012] A further technical solution of the present invention is that the limiting component includes an arc-shaped groove on the sealing strip, a sliding groove is provided on the side of the groove near the arc-shaped groove, a ball that slides up and down is provided inside the sliding groove, a first elastic element is also provided inside the sliding groove to push the ball into the arc-shaped groove, and a constriction is provided at the end of the sliding groove near the arc-shaped groove to prevent the ball from falling out.

[0013] A further technical solution of the present invention is that the pressing structure includes a first roller disposed on the sliding part, the first roller can press the dustproof strip to make the dustproof strip contact the housing.

[0014] A further technical solution of the present invention is that the output shaft of the slide mechanism is connected to the drive device through a speed regulating mechanism.

[0015] A further technical solution of the present invention is that the speed regulating mechanism includes a first conical wheel disposed at the output end of the drive device, a second conical wheel disposed on the output shaft of the slide mechanism, the second conical wheel being inverted on the output shaft of the slide mechanism such that the larger area end of the second conical wheel and the smaller area end of the first conical wheel are on the same plane, a belt is disposed on the first conical wheel and the second conical wheel, and an adjusting component is disposed on the base to allow the belt to slide on the first conical wheel and the second conical wheel.

[0016] A further technical solution of the present invention is that the adjusting component includes a lead screw mounted on a base, an adjusting block threadedly connected to the lead screw, a second roller located on both sides of the belt on the adjusting block, a sliding post on the base to prevent the adjusting block from rotating with the lead screw, and a tensioning structure for belt tensioning on the adjusting block.

[0017] A further technical solution of the present invention is that the tensioning structure includes a sliding cavity opened in the adjusting block, a slider that slides up and down is provided inside the sliding cavity, a third roller is provided at the end of the slider near the belt, and a second elastic element that pushes the slider closer to the belt is provided inside the sliding cavity.

[0018] A further technical solution of the present invention is that the housing is provided with a connecting ear, and the connecting ear is provided with a screw for fixing the dustproof strip.

[0019] A further technical solution of the present invention is that a brush is provided on the base and the housing, and the bristles of the brush are located at the edges on both sides of the dustproof belt, so that the dustproof belt is located between the brush and the housing.

[0020] A further technical solution of the present invention is that the base is provided with a protective shell for protecting the speed regulating mechanism.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This high-precision linear slide can seal the gap between the base and the housing by setting a dustproof strip. The pressing structure on the slide mechanism can press the sealing strip on the dustproof strip into the inside of the groove. The cooperation between the sealing strip and the groove can effectively prevent dust from entering the equipment from between the dustproof strip and the housing. Then, the sealing strip can be fixed by the limiting component, which can effectively prevent the sealing strip from detaching from the inside of the groove and reducing the dustproof effect. This device avoids the use of magnetic components, so it will not interfere with the sensor during use, and thus avoids affecting the accuracy of the device.

[0023] 2. This high-precision linear slide table uses a drive device to rotate a first conical wheel, which in turn drives a second conical wheel via a belt, thus enabling the slide table mechanism to operate. When the speed regulating mechanism pushes the belt to slide on the first and second conical wheels, it can change the transmission ratio between the two wheels, thereby adjusting the movement speed of the slide table mechanism. When high precision is required, adjusting the transmission ratio between the first and second conical wheels slows down the translational speed of the slide table mechanism, reducing errors caused by inertia and improving the accuracy of the equipment. When lower precision is required, adjusting the transmission ratio between the first and second conical wheels speeds up the translational speed of the slide table mechanism, thereby improving the working efficiency of the equipment. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of a specific embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of a specific embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the exploded structure of a specific embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the installation structure of the dustproof belt in a specific embodiment of the present invention;

[0029] Figure 5 This is a diagram showing the fit between the sliding part and the dustproof strip in a specific embodiment of the present invention;

[0030] Figure 6 This is an exploded view of the sliding part and the dustproof strip in a specific embodiment of the present invention;

[0031] Figure 7 for Figure 4 Enlarged structural diagram at point A;

[0032] Figure 8 for Figure 1 Enlarged structural diagram at point B;

[0033] Figure 9 This is a schematic diagram of the speed regulating mechanism in a specific embodiment of the present invention;

[0034] Figure 10 This is a schematic diagram of the structure of the adjusting component in a specific embodiment of the present invention;

[0035] Figure 11 for Figure 10 A magnified schematic diagram of the structure at point C.

[0036] In the diagram: 1. Base; 2. Slide mechanism; 201. Sliding part; 202. Pressing structure; 203. First roller; 3. Housing; 4. Dustproof belt; 5. Sealing strip; 501. Groove; 6. Limiting component; 601. Arc groove; 602. Slide groove; 603. Ball bearing; 604. First elastic element; 7. Speed ​​regulating mechanism; 701. First conical wheel; 702. Second conical wheel; 703. Belt; 8. Adjusting component; 801. Lead screw; 802. Adjusting block; 803. Second roller; 804. Sliding column; 9. Tensioning structure; 901. Slide cavity; 902. Slider; 903. Third roller; 904. Second elastic element; 10. Connecting ear; 11. Screw; 12. Brush; 13. Protective shell; 14. Drive device. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figure 1-7The present invention provides the following technical solution: a high-precision linear slide, comprising: a base 1 and a slide mechanism 2, the slide mechanism 2 being mounted on the base 1; a housing 3, mounted on the base 1 by screws; the slide mechanism 2 being disposed between the base 1 and the housing 3, such that the housing 3 can enclose the slide mechanism 2 inside the housing 3, thereby protecting the slide mechanism 2 and also providing a dustproof effect; a gap is provided between the base 1 and the housing 3, and the sliding part 201 of the slide mechanism 2 extends to the outside of the housing 3 through the gap, so that the sliding part 201 can be fitted with a clamp or other fixtures. The workpiece to be moved; a dustproof belt 4, fixed at both ends to the housing 3, so that the middle of the dustproof belt 4 has space for the sliding part 201 to move. The dustproof belt 4 can be a flexible metal belt or a plastic belt. To improve the durability of the dustproof belt 4, a metal belt is preferred. The dustproof belt 4 can cover the gap between the base 1 and the housing 3, thereby preventing dust from entering the interior of the equipment through the gap. The dustproof belt 4 passes through the sliding part 201 of the slide mechanism 2, avoiding interference between the dustproof belt 4 and the sliding part 201. A pressing mechanism is provided on the sliding part 201 of the slide mechanism 2. Structure 202 includes two pressing structures 202, each located at one end of the sliding part 201. These pressing structures 202 press the dustproof strip 4 into contact with the housing 3 and base 1, improving contact between the dustproof strip 4 and the housing 3. Sealing strip 5 is made of a flexible material with a certain degree of hardness, such as rubber or plastic. Two sealing strips 5 are provided, one corresponding to the base 1 and the other to the housing 3. The sealing strip 5 is attached to the side of the dustproof strip 4 closest to the housing 3 by adhesive bonding. Both the housing 3 and the base 1 have grooves 501 for accommodating the sealing strips 5. The sealing strip 5 is adapted to the sealing strip 5 so that the sealing strip 5 can enter the interior of the groove 501. When the dustproof strip 4 and the housing 3 are in contact, the sealing strip 5 is located inside the groove 501, thereby improving the dustproof effect. There are two limiting components 6, which are respectively set on the housing 3 and the base 1. When the pressing structure 202 presses the sealing strip 5 into the interior of the groove 501, the limiting components 6 can fix the sealing strip 5 to prevent the sealing strip 5 from coming off the interior of the groove 501. The sliding part 201 can make the sealing strip 5 located at the sliding part 201 come off the groove 501.

[0039] In a specific embodiment of the present invention, the gap between the base and the housing 3 can be sealed by setting the dustproof strip 4. The sealing strip 5 on the dustproof strip 4 can be pressed into the inside of the groove 501 by the pressing structure 202 on the slide mechanism 2. The cooperation between the sealing strip 5 and the groove 501 can effectively prevent dust from entering the device from between the dustproof strip 4 and the housing 3. Then, the sealing strip 5 can be fixed by the limiting component 6, which can effectively prevent the sealing strip 5 from falling out of the inside of the groove 501 and thus reducing the dustproof effect. This device avoids the use of magnetic components, so it will not interfere with the sensor during use, thereby avoiding the impact on the accuracy of the device.

[0040] See Figure 7 The limiting component 6 includes an arc-shaped groove 601 on the sealing strip 5, the arc-shaped groove 601 being arranged along the length of the sealing strip 5. A sliding groove 602 is formed on one side of the groove 501 near the arc-shaped groove 601, the sliding groove 602 being vertically arranged. When the sealing strip 5 is located inside the groove 501, the opening at one end of the sliding groove 602 is directly above the arc-shaped groove 601. A ball bearing 603 is disposed inside the sliding groove 602, and the ball bearing 603 can also rotate inside the sliding groove 602. When the ball bearing 603 is located at the opening of the groove 501, the ball bearing 603 is tangential to the arc-shaped groove 601. The sliding groove 602 also... A first elastic element 604 is provided to push the ball 603 into the arc-shaped groove 601. The first elastic element 604 is a compression spring, or it can be an elastic component such as an elastic element, an air bladder, or rubber. The first elastic element 604 can apply force to the ball 603, so that the ball 603 abuts against the inside of the arc-shaped groove 601, thereby fixing the sealing strip 5. A constriction is provided at one end of the slide groove 602 near the arc-shaped groove 601 to prevent the ball 603 from falling out. The constriction is provided at the opening of the slide groove 602 and can be used to limit the ball 603 and prevent the ball 603 from falling out of the slide groove 602.

[0041] In use, the sealing strip 5 on the dustproof strip 4 can be pressed into the groove 501 by pressing the structure 202. During the process of the sealing strip 5 entering the groove 501, the sealing strip 5 first pushes the ball 603 into the groove 602. When the arc groove 601 is located below the groove 602, the first elastic member 604 pushes the ball 603 to engage with the arc groove 601. Through the force applied by the first elastic member 604, the sealing strip 5 can be fixed. When the sealing strip 5 receives an outward pulling force, the sealing strip 5 will push the ball into the groove 602, and the sealing strip 5 can then be removed from the groove 501.

[0042] See Figure 3 and Figure 4 The pressing structure 202 includes a first roller 203 that rotates on the sliding part 201. There are two first rollers 203 respectively disposed at both ends of the pressing structure 202. The first rollers are in contact with the dustproof belt 4 and press the dustproof belt 4 so that the dustproof belt 4 contacts the housing 3.

[0043] Furthermore, the output shaft of the slide mechanism 2 is connected to the drive device 14 through the speed adjustment mechanism 7. The speed adjustment mechanism 7 can adjust the translation speed of the slide mechanism 2, thereby making the linear slide more flexible to use.

[0044] For details, please refer to Figure 9The speed regulating mechanism 7 includes a first conical wheel 701 disposed at the output end of the drive device 14. The drive device 14 is a motor, which is mounted on a side plate on one side of the base 1. The output end of the motor passes through the side plate and is connected to the first conical wheel 701. A second conical wheel 702 is disposed on the output shaft of the slide mechanism 2. The first conical wheel 701 and the second conical wheel 702 are of equal size. The output shaft of the slide mechanism 2 also passes through the side plate, so that the first conical wheel 701 and the second conical wheel 702 are located on the same side of the side plate. The second conical wheel 702 is inverted on the output shaft of the slide mechanism 2, so that the larger area end of the second conical wheel 702 and the smaller area end of the first conical wheel 701 are on the same plane. A belt 703 is disposed on the first conical wheel 701 and the second conical wheel 702. The width of the belt 703 is narrower than that of the first conical wheel 701 and the second conical wheel 702. The width of 2 allows space for the belt 703 to move on the first conical pulley 701 and the second conical pulley 702. One end of the belt 703 is set on the first conical pulley 701 and the other end is set on the second conical pulley 702. To improve accuracy and prevent the belt 703 from slipping, both the first conical pulley 701 and the second conical pulley 702 are provided with anti-slip surfaces. The anti-slip surfaces can increase the friction between the belt 703 and the first conical pulley 701 and the second conical pulley 702, thus preventing the belt 703 from slipping. The base 1 is provided with an adjustment component 8 that allows the belt 703 to slide on the first conical pulley 701 and the second conical pulley 702. The adjustment component 8 can push the belt 703 to slide on the first conical pulley 701 and the second conical pulley 702, thereby adjusting the transmission ratio between the first conical pulley 701 and the second conical pulley 702.

[0045] In use, the belt 703 can be pushed to slide on the first conical wheel 701 and the second conical wheel 702 by adjusting the component 8. This can change the contact diameter between the belt 703 and the first conical wheel 701 and the second conical wheel 702, thereby changing the transmission ratio between the first conical wheel 701 and the second conical wheel 702, and thus changing the output shaft speed of the slide mechanism 2.

[0046] For details, please refer to Figure 10The adjusting component 8 includes a lead screw 801 that rotates on the base 1. The lead screw 801 can be driven to rotate by a handwheel, which can be locked by a set screw. An adjusting block 802 is threaded onto the lead screw 801, allowing the adjusting block 802 to move horizontally on the lead screw 801. The adjusting block 802 is provided with second rollers 803 located on both sides of the belt 703. The two second rollers 803 are in contact with both sides of the belt 703. The base 1 is provided with a sliding post 804 to prevent the adjusting block 802 from rotating with the lead screw 801. One end of the sliding post 804 is fixed to a side plate provided on the base 1. Sliding holes are provided on both sides of the adjusting block 802, and the sliding post 804 slides inside the sliding holes to prevent the adjusting block 802 from rotating with the lead screw 801. The adjusting block 802 is provided with a tensioning structure 9 for tensioning the belt 703. The tensioning structure 9 can further prevent the belt 703 from slipping. The drive device 14 drives the first conical wheel 701 to rotate, which in turn drives the second conical wheel 702 to rotate via the belt 703, thereby enabling the slide mechanism 2 to operate. When the speed regulating mechanism 7 pushes the belt 703 to slide on the first and second conical wheels 701 and 702, the transmission ratio between the first and second conical wheels 701 and 702 can be changed, thereby adjusting the movement speed of the slide mechanism 2. When the equipment requires high precision, adjusting the transmission ratio between the first and second conical wheels 701 and 702 slows down the translation speed of the slide mechanism 2, thereby reducing the error caused by inertia and improving the precision of the equipment. When the equipment requires low precision, adjusting the transmission ratio between the first and second conical wheels 701 and 702 speeds up the translation speed of the slide mechanism 2, thereby improving the working efficiency of the equipment.

[0047] In use, loosen the set screw and rotate the handwheel to rotate the lead screw 801. The lead screw 801 drives the adjusting block 802 to move horizontally. The adjusting block 802 is equipped with a second roller 803, which can push the belt 703 to slide on the first conical wheel 701 and the second conical wheel 702, thereby adjusting the transmission part of the first conical wheel 701 and the second conical wheel 702.

[0048] See Figure 11 The tensioning structure 9 includes a sliding cavity 901 opened in the adjusting block 802. A slider 902 that slides up and down is provided inside the sliding cavity 901. A third roller 903 is rotatably connected to one end of the slider 902 near the belt 703. The third roller 903 is in contact with the belt 703. A second elastic element 904 that pushes the slider 902 close to the belt 703 is provided inside the sliding cavity 901. The second elastic element 904 is a compression spring. The second elastic element 904 can also be an elastic component such as an elastic material, an air bladder, or rubber.

[0049] In use, the second elastic element 904 can push the slider 902 to slide inside the slide cavity 901, causing the slider 902 to move towards the belt 703. The third roller 903 contacts the belt 703 and lifts the belt 703, thereby tensioning the belt 703 and preventing it from slipping, which would affect the accuracy of the equipment.

[0050] See Figure 8 The housing 3 is provided with a connecting ear 10, and the connecting ear 10 is provided with a screw 11 for fixing the dust cover 4. By loosening the screw 11, the dust cover 4 can be easily disassembled and replaced.

[0051] See Figure 8 A brush 12 is provided on the base 1 and the housing 3. The bristles of the brush 12 are located at the edges on both sides of the dustproof belt 4, so that the dustproof belt 4 is located between the brush 12 and the housing 3. The brush 12 can perform preliminary dust prevention and can further improve the dust prevention effect.

[0052] Furthermore, a protective shell 13 is provided on the base 1 to protect the speed regulating mechanism 7. The protective shell 13 can protect the speed regulating mechanism 7 and prevent it from being damaged by bumps.

Claims

1. A high-precision linear slide, characterized in that, include: A base (1) and a slide mechanism (2), the slide mechanism (2) being mounted on the base (1); The housing (3) is mounted on the base (1), and the slide mechanism (2) is located between the base (1) and the housing (3) so that the housing (3) protects the slide mechanism (2). There is a gap between the base (1) and the housing (3), and the sliding part (201) of the slide mechanism (2) extends to the outside of the housing (3) through the gap. A dustproof strip (4) is provided at both ends on the housing (3). The dustproof strip (4) can cover the gap between the base (1) and the housing (3). The dustproof strip (4) passes through the sliding part (201) of the slide mechanism (2). A pressing structure (202) is provided on the sliding part (201) of the slide mechanism (2). The pressing structure (202) can press the dustproof strip (4) to contact the housing (3) and the base (1). A sealing strip (5) is provided on the side of the dustproof belt (4) close to the housing (3). Both the housing (3) and the base (1) are provided with grooves (501) for accommodating the sealing strip (5). When the dustproof belt (4) and the housing (3) are in contact, the sealing strip (5) is located inside the groove (501). The limiting component (6) is provided on the housing (3) and the base (1). When the pressing structure (202) presses the sealing strip (5) into the groove (501), the limiting component (6) can fix the sealing strip (5). The sliding part (201) can make the sealing strip (5) located at the sliding part (201) disengage from the groove (501). The limiting component (6) includes an arc groove (601) provided on the sealing strip (5). A sliding groove (602) is provided on the side of the groove (501) near the arc groove (601). A ball (603) that slides up and down is provided inside the sliding groove (602). A first elastic element (604) that pushes the ball (603) into the arc groove (601) is also provided inside the sliding groove (602). A constriction opening is provided at the end of the sliding groove (602) near the arc groove (601) to prevent the ball (603) from falling out. The pressing structure (202) includes a first roller (203) disposed on the sliding part (201), the first roller (203) can press the dustproof strip (4) to make the dustproof strip (4) contact the housing (3); The output shaft of the slide mechanism (2) is connected to the drive device (14) through the speed regulating mechanism (7); The speed regulating mechanism (7) includes a first conical wheel (701) disposed at the output end of the drive device (14), and a second conical wheel (702) disposed on the output shaft of the slide mechanism (2). The second conical wheel (702) is inverted on the output shaft of the slide mechanism (2), so that the larger end of the second conical wheel (702) and the smaller end of the first conical wheel (701) are on the same plane. A belt (703) is disposed on the first conical wheel (701) and the second conical wheel (702). An adjusting component (8) is disposed on the base (1) to allow the belt (703) to slide on the first conical wheel (701) and the second conical wheel (702).

2. The high-precision linear slide according to claim 1, characterized in that: The adjusting component (8) includes a lead screw (801) mounted on a base (1), an adjusting block (802) threaded onto the lead screw (801), a second roller (803) located on both sides of the belt (703) mounted on the adjusting block (802), a sliding column (804) mounted on the base (1) to prevent the adjusting block (802) from rotating with the lead screw (801), and a tensioning structure (9) mounted on the adjusting block (802) for tensioning the belt (703).

3. A high-precision linear slide according to claim 2, characterized in that: The tensioning structure (9) includes a sliding cavity (901) opened in the adjusting block (802). The sliding cavity (901) is provided with a slider (902) that slides up and down. A third roller (903) is provided at one end of the slider (902) near the belt (703). The sliding cavity (901) is provided with a second elastic element (904) that pushes the slider (902) close to the belt (703).

4. A high-precision linear slide according to claim 1, characterized in that: The housing (3) is provided with a connecting ear (10), and the connecting ear (10) is provided with a screw (11) for fixing the dustproof strip (4).

5. A high-precision linear slide according to claim 1, characterized in that: A brush (12) is provided on the base (1) and the housing (3), and the bristles of the brush (12) are located at the edges on both sides of the dustproof belt (4), so that the dustproof belt (4) is located between the brush (12) and the housing (3).

6. A high-precision linear slide according to any one of claims 1-5, characterized in that: The base (1) is provided with a protective shell (13) for protecting the speed regulating mechanism (7).

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