A sliding table sealing structure, machine tool

Abstract

The application provides a sliding table sealing structure and a machine tool. The sliding table sealing structure comprises a base, wherein a sliding plate is arranged on the base, the sliding plate is capable of moving on the base, and when the sliding plate moves, a side of the base towards the sliding plate is projected, and the base is located in the projected area of the sliding plate. According to the application, the technical problem that machining sundries easily penetrate into the joint between the sliding plate and the base in the prior art can be solved.

Description

Technical Field

[0001] This invention belongs to the field of machine tool technology, specifically relating to a slide sealing structure and a machine tool. Background Technology

[0002] High-precision hydrostatic slides are core motion-bearing components of ultra-precision CNC machine tools, and the stability of the components themselves directly determines the long-term service performance of the machine tool.

[0003] The slide table consists of a slide plate and a base. The slide plate is driven by a drive component to move on the base, thereby adjusting the position of the components on the slide plate. The top surface of the slide table serves as the bearing surface for workpiece cutting. During machine tool cutting operations, fine chips, metal dust, and other solid debris are continuously generated. If the sealing and protective structure is not effective enough, machining debris can easily seep into the hydrostatic guide rail structure at the junction of the slide plate and the base, damaging the integrity of the guide rail's pressure-bearing oil film, accelerating the wear of the guide rail contact surface, and thus weakening the dynamic machining accuracy of the slide table. When a linear drive motor is built between the base and the slide plate, the infiltrated hard metal chips can also scrape against the motor's mover and stator structures, causing permanent structural failures such as permanent magnet damage and short circuits, increasing equipment maintenance and replacement costs and reducing the continuous operation time of the equipment.

[0004] Due to technical problems such as the easy penetration of machining debris into the connection between the slide and the base in existing machine tools, this invention studies and designs a slide sealing structure and machine tool. Summary of the Invention

[0005] Therefore, the present invention provides a sliding table sealing structure and machine tool, which can solve the technical problem in the prior art that processing debris can easily seep into the connection between the sliding plate and the base.

[0006] To solve the above problems, the present invention provides a sliding platform sealing structure, comprising: a base, on which a sliding plate is disposed, the sliding plate being movable on the base, and, when the sliding plate moves, a projection is made from the base toward one side of the sliding plate, the base being located within the projection area of ​​the sliding plate.

[0007] In some embodiments, the skateboard has a sidewall parallel to the direction of movement of the skateboard, the sidewall of the skateboard is provided with a first sealing plate, the first sealing plate is provided with a sealing rib, the base is provided with a first groove, the first groove and the sealing rib both extend along the direction of movement of the skateboard, and the sealing rib is located in the first groove.

[0008] In some embodiments, a magnet is disposed within the first groove.

[0009] In some embodiments, the base is provided with a second groove and a third groove on the end face of the slide plate. The second groove and the third groove both extend along the movement direction of the slide plate. The second groove is closer to the first sealing plate than the third groove. A sealing strip is provided in the second groove, and a permanent magnet is provided in the third groove.

[0010] In some embodiments, the skateboard has an end perpendicular to the direction of movement of the skateboard, and the end of the skateboard is provided with a second sealing plate.

[0011] In some embodiments, the base has an end perpendicular to the direction of movement of the skateboard, and the end of the base is provided with a third sealing plate and a fourth sealing plate, which are arranged at intervals along the direction of movement of the skateboard.

[0012] In some embodiments, the fourth sealing plate is L-shaped, the fourth sealing plate is disposed on the third sealing plate, the third sealing plate is disposed at the end of the base, and the top of the fourth sealing plate and the third sealing plate each have a gap with the bottom surface of the slide plate.

[0013] In some embodiments, the top of the third sealing plate is provided with a groove, and a sealing strip and a permanent magnet are disposed in the groove.

[0014] In some embodiments, a scraper is provided on the top of the fourth sealing plate for cleaning impurities from the bottom surface of the slide plate.

[0015] The present invention also provides a machine tool including the aforementioned slide sealing structure.

[0016] The sliding table sealing structure and machine tool provided by this invention have the following beneficial effects: When the skateboard moves, a projection is made from the base toward one side of the skateboard. The base is located within the projection area of ​​the skateboard, ensuring that the skateboard always covers the base during operation, thereby preventing processing debris and liquids from entering between the skateboard and the base and causing damage to the skateboard. Attached Figure Description

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the sliding table sealing structure of the present invention; Figure 2 This is a cross-sectional view of the sliding table sealing structure of the present invention; Figure 3 This is a longitudinal sectional view of the sliding sealing structure of the present invention.

[0019] The attached figures are labeled as follows: 1. Slide plate; 2. First sealing plate; 3. Base; 4. Second sealing plate; 5. First groove; 6. Sealing rib; 7. Motor; 8. Guide rail; 9. Third sealing plate; 10. Fourth sealing plate; 11. Second groove; 12. Third groove. Detailed Implementation

[0020] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. 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.

[0021] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0022] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0023] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0024] See also Figure 1-3 As shown, according to an embodiment of the present invention, a sliding table sealing structure is provided, including: a base 3, on which a sliding plate 1 is disposed, the sliding plate 1 being movable on the base 3, and when the sliding plate 1 moves, a projection is made from the base 3 toward one side of the sliding plate 1, the base 3 being located within the projection area of ​​the sliding plate 1. In this technical solution, by projecting a projection from the base 3 toward one side of the sliding plate 1 when the sliding plate 1 moves, and the base 3 being located within the projection area of ​​the sliding plate 1, the sliding plate 1 always covers the base 3 during operation, thereby preventing processing debris and liquids from entering between the sliding plate 1 and the base 3, which could lead to damage to the sliding table.

[0025] It should be noted that, taking the direction of motion of skateboard 1 as the length direction of base 3 and the length direction of skateboard, in the horizontal plane, the direction perpendicular to the length direction is the width direction. The width direction is the horizontal direction, and the length direction is the vertical direction.

[0026] In some embodiments, the slide plate 1 is longer than the base 3, and the length of the slide plate 1 extending beyond the base 3 is exactly the running distance of the slide plate 1, ensuring that the upper slide plate 1 always covers the base 3 during the operation of the slide table, thereby preventing processing debris and liquids from entering between the slide plate 1 and the base 3.

[0027] In some embodiments, the length and width of the slide plate 1 are both greater than those of the base 3. During the movement of the slide table, the slide plate 1 will not expose the base 3, forming an absolute seal. The upper part of the slide plate 1 is the part through which most of the liquid flows, thereby preventing processing debris and liquid from entering between the slide plate 1 and the base 3, which could lead to damage to the slide table.

[0028] In some embodiments, the slide plate 1 has a sidewall parallel to the direction of movement of the slide plate 1, the sidewall of the slide plate 1 is provided with a first sealing plate 2, the first sealing plate 2 is provided with a sealing rib 6, the base 3 is provided with a first groove 5, the first groove 5 and the sealing rib 6 both extend along the direction of movement of the slide plate 1, and the sealing rib 6 is located in the first groove 5.

[0029] In this technical solution, a first sealing plate 2 is provided on the side wall of the slide plate 1 to prevent processing debris or liquid falling from the slide plate 1 from flowing between the slide plate 1 and the base 3. A second sealing structure is formed between the side wall of the slide plate 1 and the base 3 by the sealing rib 6 and the first groove 5, which further ensures the sealing effect between the side wall of the slide plate 1 and the base 3.

[0030] In some embodiments, the base 3 is mounted on a horizontal plane, that is, the base 3 is mounted on a horizontal plane, the direction perpendicular to the horizontal plane is the height direction, the first sealing plate 2 extends toward the horizontal plane, and there is a gap between the first sealing plate 2 and the horizontal plane.

[0031] In some embodiments, both sides of the slide plate 1 have a first sealing plate 2.

[0032] In some embodiments, along the direction of movement of the slide plate 1, the length of the first sealing plate 2 and the length of the sealing rib 6 are equal to the length of the slide plate 1, the length of the first groove 5 is equal to the length of the base 3, and the first groove 5 penetrates the base 3. The sealing rib 6 is located in the first groove 5, and the sealing rib 6 can move in the first groove 5 with the movement of the slide plate 1.

[0033] In some embodiments, the sealing rib 6 is clearance-fitted with the inner wall of the first groove 5.

[0034] In some embodiments, the gap between the sealing rib 6 and the inner wall of the first groove 5 is 1-2 mm, and the sealing rib 6 reciprocates within the first groove 5 during operation.

[0035] In some embodiments, at least two sealing ribs 6 and at least two first grooves 5 can be provided along the height direction, with the sealing ribs 6 spaced apart in the height direction and the first grooves 5 spaced apart in the height direction, and the sealing ribs 6 and the first grooves 5 are arranged in a one-to-one correspondence. Of course, only one sealing rib 6 and one first groove 5 can also be provided.

[0036] In some embodiments, a magnet is provided in the first groove 5.

[0037] In this technical solution, a magnet is installed in the first groove 5 to adsorb metal powder in the water vapor, preventing metal particles from entering the internal space and being adsorbed by the motor, thus preventing damage.

[0038] In some embodiments, the length of the magnet is the same as the length of the first groove 5 along the extending direction of the first groove 5, and there is a gap between the magnet and the sealing rib 6.

[0039] In some embodiments, the base 3 has a first groove 5 on its side, and the slide plate 1 has a sealing plate mounting position on its side. The first sealing plate 2 is welded with a sealing rib 6. The first sealing plate 2 is installed on the side of the upper slide plate, and the sealing rib 6 is inserted into the first groove 5 on the side of the base. The three-sided gap between the sealing rib 6 and the first groove 5 is 1-2mm. During operation, the rib moves back and forth in the sealing groove, thereby forming two labyrinth seals. A bar magnet is installed in the first groove 5 to adsorb metal powder in the water vapor, preventing metal particles from entering the internal space and being attracted by the motor, causing damage.

[0040] In some embodiments, the base 3 is provided with a second groove 11 and a third groove 12 on the end face of the slide plate 1. The second groove 11 and the third groove 12 both extend along the movement direction of the slide plate 1. The second groove 11 is closer to the first sealing plate 2 than the third groove 12. A sealing strip is provided in the second groove 11 and a permanent magnet is provided in the third groove 12.

[0041] In this technical solution, a sealing strip is provided in the second groove 11 and a permanent magnet is provided in the third groove 12, forming a third sealing structure between the side wall of the base 3 and the slide plate 1, further preventing processing debris or liquid from entering between the base 3 and the slide plate 1.

[0042] In some embodiments, the lengths of the second groove 11 and the third groove 12 are equal to the length of the base 3.

[0043] In some embodiments, the base 3 and the slide plate 1 are connected by a linear motor 7. Part of the linear motor 7 is embedded in the top surface of the base 3, and the remaining part is embedded in the bottom surface of the slide plate 1. A guide rail 8 is provided on the upper surface of the base 3, and a slider is provided on the bottom surface of the slide plate 1. The slide plate 1 is driven by the linear motor 7 to move, and is limited and guided by the slider and the guide rail 8. Its structure is the same as the existing structure.

[0044] In some embodiments, a second groove 11 and a third groove 12 form a set of groove structures. The slide plate 1 has two side walls, and the top surface of the base 3 is provided with two sets of groove structures. One groove structure corresponds to one side wall of the slide plate 1. The linear motor 7 and the guide rail 8 are both located between the two sets of groove structures. The groove structures are located close to the side wall of the base 3.

[0045] In some embodiments, the gap between the lower surface of the slide plate 1 and the upper surface of the base 3 is 1-2 mm. Two sealing grooves are left on the upper surface of the base 3. A sealing strip is installed near the outer side, and a strip-shaped strong magnet is installed on the inner side. Finally, three seals are formed on the side of the slide plate: two labyrinth-reinforced magnetic seals and one strip-reinforced magnetic seal.

[0046] In some implementations, the sealing strip is a rubber sealing strip.

[0047] In some embodiments, the slide plate 1 has an end perpendicular to the direction of movement of the slide plate 1, and the end of the slide plate 1 is provided with a second sealing plate 4.

[0048] In this technical solution, a second sealing plate 4 is provided at the end of the slide plate 1 to prevent processing debris or liquid falling from the slide plate 1 from flowing between the slide plate 1 and the base 3.

[0049] In some embodiments, both ends of the slide plate 1 have a first sealing plate 2.

[0050] In some embodiments, the length of the second sealing plate 4 is equal to the width of the slide plate 1, and the length of the first groove 5 is equal to the length of the base 3.

[0051] In some embodiments, the base 3 has an end perpendicular to the direction of movement of the slide plate 1, and the end of the base 3 is provided with a third sealing plate 9 and a fourth sealing plate 10, which are arranged at intervals along the direction of movement of the slide plate 1.

[0052] In this technical solution, by providing a third sealing plate 9 and a fourth sealing plate 10 at the end of the base 3, processing debris and liquid at the end of the slide plate 1 are prevented from entering between the base 3 and the slide plate 1.

[0053] In some embodiments, the fourth sealing plate 10 is L-shaped and is disposed on the third sealing plate 9, which is disposed at the end of the base 3. The top of the fourth sealing plate 10 and the third sealing plate 9 each have a gap with the bottom surface of the slide plate 1.

[0054] In this technical solution, gaps are provided between the top of the fourth sealing plate 10 and the bottom surface of the third sealing plate 9, thereby preventing the fourth sealing plate 10 and the third sealing plate 9 from affecting the movement of the sliding plate 1.

[0055] In some embodiments, the fourth sealing plate 10 is disposed on the third sealing plate 9 near the horizontal plane, so that a gap is formed between the fourth sealing plate 10 and the third sealing plate 9.

[0056] In some embodiments, a U-shaped structure is formed between the fourth sealing plate 10 and the third sealing plate 9, with the cross-section along the length of the base as the projection plane, and the opening of the U-shape facing the slide plate 1.

[0057] In some embodiments, the top of the third sealing plate 9 is provided with a groove, and a sealing strip and a permanent magnet are disposed in the groove.

[0058] In this technical solution, by setting a sealing strip and a permanent magnet on the top of the third sealing plate 9, the metal dust in the water mist is strongly adsorbed, which can effectively prevent metal particles from entering the internal space of the slide.

[0059] In some embodiments, a scraper is provided on the top of the fourth sealing plate 10 for cleaning impurities from the bottom surface of the slide plate 1.

[0060] In this technical solution, a scraper is provided on the top of the fourth sealing plate 10 to clean the impurities and liquid on the bottom surface of the slide plate 1, preventing the impurities and liquid from entering between the base 3 and the slide plate 1.

[0061] In some implementations, the scraper is made of rubber.

[0062] In some embodiments, for sealing the ends of the slide, a second sealing plate 4 is installed at the end of the slide plate 1 to prevent liquid from directly contacting the end of the base 3 as a first seal. Two end sealing plates, namely a fourth sealing plate 10 and a third sealing plate 9, are installed at the end of the base 3. The gap between the upper surface of the fourth sealing plate 10 and the third sealing plate 9 and the lower surface of the slide plate 1 is 1-2 mm. A sealing scraper is installed on the fourth sealing plate 10 to form a second seal. A sealing groove is left on the upper surface of the third sealing plate 9, and a sealing strip and a strip-shaped strong magnet are installed to form a third seal. The fourth sealing plate 10 and the third sealing plate 9 are arranged at intervals, so that a space is formed between the fourth sealing plate 10 and the third sealing plate 9. If water scraped off by the second seal enters inside, it can be temporarily stored inside and then discharged later to prevent it from entering the interior of the slide.

[0063] The sliding table sealing structure of this invention provides a completely absolute seal on the upper surface of the sliding table. The sliding plate is larger than the base, and the base space is never exposed during the movement of the sliding table, thus forming an absolute seal. The upper part of the sliding table is where most of the liquid flows, and the absolute seal of this part provides the basis for the overall sealing effect of the sliding table.

[0064] The slide table has three layers of seals around its perimeter and is equipped with strong magnetic strips. There are three seals on the sides and ends, each with a strong magnet, which powerfully attracts metal dust from the water mist, effectively preventing metal particles from entering the slide table's internal space. Metal dust is extremely harmful to linear motors; once attracted to the motor, it can directly cause wear between the moving and stators. Most slide table sealing structures lack specific designs for metal dust; the slide table sealing structure of this invention is more suitable for slide table structures driven by linear motors.

[0065] Example 1

[0066] For the 1410 internal grinding machine, a linear motor drive is used. The linear motor mover is installed in the middle of the lower surface of the slide plate, and the stator is installed on the upper surface of the base. The slide plate 1 is 1280mm long, and the total length of the base 3 plus the two end sealing plates is 1034mm. The slide stroke is 240mm, which ensures that the base is always located under the slide plate within the stroke range, with no end protrusion, forming a seal on the upper surface of the base. The sealing plate 2 is made of stainless steel, and sealing ribs are welded at the corresponding positions of the sealing grooves on the side of the base 3 to form two labyrinth seals. The gap between the lower surface of the slide plate 1 and the upper surface of the base 3 is 1.5mm. A sealing strip and a strong magnet are installed on the upper surface of the base. A third sealing plate 9 and a fourth sealing plate 10 are installed at the ends. Sealing grooves are left on the upper surface of the two sealing plates, and sealing strips and strong magnets are installed there. A 10mm space is left between the two sealing plates to store liquid that is not completely blocked by the previous seal.

[0067] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A sliding table sealing structure, characterized in that: include: A base (3) is provided with a slide (1) on the base (3). The slide (1) is able to move on the base (3). When the slide (1) moves, it is projected from the base (3) toward the side of the slide (1). The base (3) is located in the projection area of ​​the slide (1).

2. The sliding table sealing structure according to claim 1, characterized in that: The slide (1) has a side wall parallel to the direction of movement of the slide (1). The side wall of the slide (1) is provided with a first sealing plate (2). The first sealing plate (2) is provided with a sealing rib (6). The base (3) is provided with a first groove (5). The first groove (5) and the sealing rib (6) both extend along the direction of movement of the slide (1). The sealing rib (6) is located in the first groove (5).

3. The sliding table sealing structure according to claim 2, characterized in that: A magnet is provided in the first groove (5).

4. The sliding table sealing structure according to claim 2, characterized in that: The base (3) is provided with a second groove (11) and a third groove (12) on the end face facing the slide plate (1). The second groove (11) and the third groove (12) both extend along the movement direction of the slide plate (1). The second groove (11) is closer to the first sealing plate (2) than the third groove (12). A sealing strip is provided in the second groove (11), and a permanent magnet is provided in the third groove (12).

5. The sliding table sealing structure according to claim 1, characterized in that: The slide (1) has an end perpendicular to the direction of movement of the slide (1), and the end of the slide (1) is provided with a second sealing plate (4).

6. The sliding table sealing structure according to claim 1, characterized in that: The base (3) has an end perpendicular to the direction of movement of the slide plate (1). The end of the base (3) is provided with a third sealing plate (9) and a fourth sealing plate (10). The third sealing plate (9) and the fourth sealing plate (10) are arranged at intervals along the direction of movement of the slide plate (1).

7. The sliding table sealing structure according to claim 6, characterized in that: The fourth sealing plate (10) is L-shaped and is disposed on the third sealing plate (9). The third sealing plate (9) is disposed at the end of the base (3). The top of the fourth sealing plate (10) and the third sealing plate (9) each have a gap with the bottom surface of the slide plate (1).

8. The sliding table sealing structure according to claim 7, characterized in that: The top of the third sealing plate (9) is provided with a groove, and a sealing strip and a permanent magnet are provided in the groove.

9. The sliding table sealing structure according to claim 7, characterized in that: The top of the fourth sealing plate (10) is provided with a scraper, which is used to clean impurities from the bottom surface of the slide plate (1).

10. A machine tool, characterized in that, The slide sealing structure includes any one of claims 1 to 9.

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