Sliding mechanism of grinding head

Abstract

The utility model discloses a grinding head sliding mechanism which comprises a sliding block, a sliding base and a pressing plate, a plurality of guide rail faces are arranged on the two sides of the sliding block, every two adjacent guide rail faces on the same side are perpendicularly distributed, a limiting groove is defined by the pressing plate and the sliding base, and the guide rail faces are located in the limiting groove. Wherein one guide rail surface is connected with a pressing plate at a notch of the limiting groove through a plurality of pin rollers, the pin rollers roll along the guide rail surfaces, and the rest guide rail surfaces are connected with the sliding seat in a sliding mode. Compared with the prior art, by means of the design of the pressing plate and the pin rollers, sliding friction of two parts in a plane kinematic pair is changed into rolling friction, the friction force is smaller, abrasion of a sliding face is reduced, and the service life of a product is prolonged. And secondly, the abrasion of the guide rail surface is delayed, and meanwhile, the rigidity and the strength necessary for the working process of the grinding head are achieved, so that the movement precision of the grinding head spindle can be effectively kept.

Description

Technical Field

[0001] The utility model relates to the technical field of slide rail manufacturing, in particular to a sliding mechanism of a grinding head. Background Art

[0002] At present, the conventional slide rails with similar structures in terms of deformation are all positioned and assembled by means of compression strips. For the slider of the vertically moving gantry grinding head, its X-axis is subjected to the grinding force. Under the action of the grinding force, the slider will compress the soft belt positioned in the X-axis. Especially during strong grinding, the force is greater. The greater the stroke of the grinding head, the grinding wheel as the far end, and its X-axis movement is also greater, which will lead to increased deformation and increased friction, and aggravated wear of the slide rail. Utility Model Content

[0003] The utility model provides a sliding mechanism of a grinding head, which is used to solve the problem that the existing over-positioning assembly method easily causes wear of the slide rail.

[0004] The utility model provides a sliding mechanism of a grinding head, comprising: a slider, a slide seat and a pressure plate, wherein a plurality of guide rail surfaces are provided on both sides of the slider, and two adjacent guide rail surfaces on the same side are vertically distributed, and the pressure plate and the slide seat enclose a limiting groove, and the guide rail surfaces are located in the limiting groove, wherein one of the guide rail surfaces is connected to the pressure plate at the notch of the limiting groove through a plurality of rollers, and the rollers roll along the guide rail surface, and the remaining guide rail surfaces are slidably connected to the slide seat.

[0005] Preferably, a plurality of fixing seats are fixed on the pressure plate, and the rollers are rotatably arranged on the fixing seats.

[0006] Preferably, a positioning block is provided at one end of the fixing seat away from the roller, a positioning groove adapted to the positioning block is provided on the pressure plate, mounting plates are provided on both sides of the fixing seat, and the mounting plates are fixed to the pressure plates by bolts.

[0007] Preferably, a first lubrication hole is provided on the pressure plate, a second lubrication hole is provided on the fixing seat, the second lubrication hole extends to the roller, and the first lubrication hole is connected to the second lubrication hole.

[0008] Preferably, the oil inlet of the first lubrication hole is arranged on one side of the pressure plate, and the oil outlet of the first lubrication hole is arranged in the positioning groove of the pressure plate.

[0009] Preferably, a polytetrafluoroethylene soft belt is provided between the slide seat and the guide rail surface of the slider.

[0010] Preferably, a gap adjustment component is provided between the slide seat and the slider.

[0011] Preferably, the gap adjustment assembly includes a wedge plate, and the slide seat is provided with an inclined surface matching the wedge plate.

[0012] Preferably, there are two wedge plates, and the smaller end of one wedge plate is in the opposite direction to the smaller end of the other wedge plate.

[0013] Preferably, protrusions are respectively provided on both sides of the slider, the protrusions are in a square shape, the three side surfaces of the protrusions are guide rail surfaces, and the rollers roll along the protrusions.

[0014] Preferably, the polytetrafluoroethylene soft tape is adhered to the slide seat.

[0015] Preferably, an oil storage tank is provided on the PTFE soft belt.

[0016] Compared to existing technologies, the present invention utilizes a pressure plate and roller design to transform the two sliding frictions in the planar kinematic pair into rolling friction, resulting in lower friction, which helps reduce wear on the sliding surfaces and extend the product's lifespan. Furthermore, while slowing wear on the guide surfaces, it also provides the rigidity and strength necessary for the grinding head's operation, effectively maintaining the precision of the grinding head's spindle movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 for Figure 1 Schematic cross-sectional view along line AA;

[0020] Figure 3 for Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0021] Figure 4 It is a partial structural diagram of the utility model;

[0022] Figure 5 It is a cross-sectional schematic diagram of the fixing seat of the utility model;

[0023] Figure 6 This is a structural diagram of the slider of the utility model

[0024] Figure 7 This is a structural diagram of the slide seat of the utility model

[0025] Figure 8 It is the front view of the slide seat of the present utility model.

[0026] Reference numerals:

[0027] 1. Slider, 2. Slide, 3. Pressure plate, 4. Roller, 5. PTFE soft belt, 6. Wedge, 7. Fixed seat, 11. Guide surface, 12. Protrusion, 21. Inclined surface, 31. Positioning groove, 32. First lubrication hole, 71. Positioning block, 72. Mounting plate, 73. Second lubrication hole, 100. Limit groove. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Refer to the attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 and attached Figure 6 This embodiment provides a sliding mechanism for a grinding head, including: a slider 1, a slide 2 and a pressure plate 3. A plurality of guide surfaces 11 are provided on both sides of the slider 1. Two adjacent guide surfaces 11 on the same side are vertically distributed. The pressure plate 3 and the slide 2 enclose a limit groove 100. The guide surfaces 11 are located in the limit groove 100. One of the guide surfaces 11 is connected to the pressure plate 3 at the notch of the limit groove 100 through a plurality of rollers 4. The rollers 4 roll along the guide surfaces 11, and the remaining guide surfaces 11 are slidably connected to the slide 2. The utility model positions the slider 1 in the X direction through the pressure plate 3 and the rollers 4. The rollers 4 have good rigidity and strength. When they are in contact with the guide surfaces 11 and are pressed by the pressure plate 3, the X-direction deformation caused by external forces can be ignored. Therefore, the utility model has a strong anti-grinding force deformation effect. The utility model converts the two sliding frictions in the planar motion pair into rolling friction, and the friction force becomes smaller, thereby reducing the wear of the slider 1.

[0030] One installation method of the roller 4 is as follows: a plurality of fixing seats 7 are fixed on the pressure plate 3 , and the roller 4 is rotatably arranged on the fixing seats 7 .

[0031] An embodiment of the fixing seat 7: Figure 4 A positioning block 71 is provided at the end of the fixing seat 7 away from the roller 4. A positioning slot 31 is provided on the pressure plate 3 to match the positioning block 71. Mounting plates 72 are provided on either side of the fixing seat 7, and the mounting plates 72 are secured to the pressure plate 3 by bolts. In this structural design, positioning accuracy is ensured by inserting the positioning block 71 into the positioning slot 31, thereby ensuring that the rolling trajectory of the roller 4 is parallel to the sliding direction of the slider 1.

[0032] As another embodiment of the present invention: Figure 5 The pressure plate 3 is provided with a first lubrication hole 32, and the fixed seat 7 is provided with a second lubrication hole 73. The second lubrication hole 73 extends to the roller 4, and the first lubrication hole 32 and the second lubrication hole 73 are connected. The lubricating oil is evenly distributed along the first lubrication hole 32 and the second lubrication hole 73 in the rolling motion pair, which helps to reduce the friction coefficient during the overall movement.

[0033] As another embodiment of the present invention: the oil inlet of the first lubrication hole 32 is arranged on one side of the pressing plate 3, and the oil outlet of the first lubrication hole 32 is arranged in the positioning groove 31 of the pressing plate 3. In this structural design, the first lubrication hole 32 is a hidden design.

[0034] Specifically, the pressing plate 3 is fixed on the sliding seat 2 by bolts.

[0035] As another embodiment of the present invention: Figure 8 A polytetrafluoroethylene soft belt 5 is provided between the slide seat 2 and the guide rail surface 11 of the slider 1.

[0036] As another embodiment of the present invention, a gap adjustment assembly is provided between the slide 2 and the slider 1. In the Y direction, the gap adjustment assembly is used to adjust the compression of the PTFE tape 5. In the X direction, the compression of the PTFE tape 5 is adjusted by the height of the pressure plate 3. Specifically, by adjusting the thickness of the stop of the pressure plate 3, the compression of the PTFE tape 5 meets the design requirements under the inherent tightening force of the bolt.

[0037] One implementation of the gap adjustment assembly: Figure 7 The gap adjustment assembly includes a wedge plate 6, and the slide 2 is provided with an inclined surface 21 that cooperates with the wedge plate 6. In this structural design, the distance between the slide 2 and the slider 1 is adjusted by adjusting the position of the wedge plate 6, thereby adjusting the compression amount of the PTFE soft belt 5, and then realizing the Y-direction positioning of the slider 1 on the slide 2.

[0038] In another embodiment of the present invention, two wedge plates 6 are provided, with the smaller end of one wedge plate 6 oriented in an opposite direction to the smaller end of the other wedge plate 6 , i.e., the smaller ends of the two wedge plates 6 are not oriented in the same direction. This improves the Y-direction positioning of the slider 1 on the slide 2 . Specifically, the position of the wedge plate 6 can be adjusted using two screws: one screw is used to adjust the distance between the wedge plate 6 and the slide 2 , and the other screw is used to secure the wedge plate 6 to the slide 2 .

[0039] As another embodiment of the present invention, a protrusion 12 is provided on both sides of the slider 1. The protrusion 12 is in the shape of a block. The three sides of the protrusion 12 serve as guide surfaces 11. The roller 4 rolls along the protrusion 12. One wedge plate 6 is in contact with the guide surface 11 of the protrusion 12 in the Y direction, and the other wedge plate 6 and the roller 4 are located on both sides of the protrusion 12.

[0040] One installation method of the PTFE soft tape 5 is as follows: the PTFE soft tape 5 is pasted on the slide 2 .

[0041] As another embodiment of the present invention: an oil storage tank is provided on the PTFE soft belt 5, and the lubricating oil is evenly distributed along the oil storage tank on the planar motion pair, which is conducive to lowering the friction coefficient during the overall movement.

[0042] Specifically, the PTFE soft belt 5 is a PTFE soft belt, and the roller 4 is fixed on the pressing plate 3 through a fixing plate, and the roller 4 is rotatably set on the fixing plate.

[0043] As another embodiment of the present invention, both the slider 1 and the slide seat 2 are made of high-strength HT cast iron, and the guide rail surface 11 is integrally machined. The guide rail surface 11 of the slider 1 is hardened by quenching and then fine-ground to the design requirements. A high-quality PTFE soft tape is attached to the slide seat 2 and used as a scraping tool to match the finely machined slider 1. This ensures that the fit between the PTFE soft tape on the slide seat 2 and the guide rail surface 11 on the slider 1 meets the requirements of the internally controlled scraping process.

[0044] The utility model uses a method of simultaneous adjustment and testing to match the shovel wedge 6 and the polytetrafluoroethylene soft tape pasted on the moving surface of the slide 2, so that the straightness of the two mutually perpendicular directions of the slider 1 sliding on the slide 2 through the guide surface 11 meets the design requirements.

[0045] In this utility model, the design of the pressure plate 3 and rollers 4 transforms the original two planar kinematic pairs into two planar pairs and two rolling pairs, helping to reduce wear on the sliding surfaces (guide surface 11 and PTFE soft belt 5) and extend the product's lifespan. Furthermore, while delaying wear on the guide surface 11, it also provides the rigidity and strength necessary for the grinding head's operation, effectively maintaining the precision of the grinding head's spindle motion.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A sliding mechanism of a grinding head, characterized in that: include: A slider, a slide seat and a pressure plate, multiple guide surfaces are provided on both sides of the slider, and the two adjacent guide surfaces on the same side are vertically distributed. The pressure plate and the slide seat enclose a limit groove, and the guide surfaces are located in the limit groove. One of the guide surfaces is connected to the pressure plate at the notch of the limit groove through multiple rollers, and the rollers roll along the guide surface, and the remaining guide surfaces are slidably connected to the slide seat.

2. The sliding mechanism of the grinding head according to claim 1, characterized in that: A plurality of fixing seats are fixed on the pressure plate, and the rollers are rotatably arranged on the fixing seats.

3. The sliding mechanism of the grinding head according to claim 2, characterized in that: A positioning block is provided on one end of the fixing seat away from the roller, a positioning groove adapted to the positioning block is provided on the pressure plate, and mounting plates are provided on both sides of the fixing seat, and the mounting plates are fixed to the pressure plates by bolts.

4. The sliding mechanism of the grinding head according to claim 3, characterized in that: The pressure plate is provided with a first lubrication hole, the fixing seat is provided with a second lubrication hole, the second lubrication hole extends to the roller, and the first lubrication hole and the second lubrication hole are connected.

5. The sliding mechanism of the grinding head according to claim 4, characterized in that: The oil inlet of the first lubrication hole is arranged on one side of the pressing plate, and the oil outlet of the first lubrication hole is arranged in the positioning groove of the pressing plate.

6. The sliding mechanism of the grinding head according to claim 1, characterized in that: A polytetrafluoroethylene soft belt is provided between the sliding seat and the guide rail surface of the sliding block.

7. The sliding mechanism of the grinding head according to claim 6, characterized in that: A gap adjustment component is provided between the sliding seat and the sliding block.

8. The sliding mechanism of the grinding head according to claim 7, characterized in that: The gap adjustment assembly includes a wedge plate, and the slide seat is provided with an inclined surface that matches the wedge plate.

9. The sliding mechanism of the grinding head according to claim 8, characterized in that: There are two wedge plates, and the smaller end of one wedge plate is in the opposite direction to the smaller end of the other wedge plate.

10. The sliding mechanism of the grinding head according to claim 9, characterized in that: Both sides of the slider are provided with protrusions respectively, the protrusions are in a square shape, the three side surfaces of the protrusions are guide rail surfaces, and the rollers roll along the protrusions.

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