A mineral casting static pressure guide rail and manufacturing method

Abstract

The present invention belongs to the technical field of mineral casting preparation, and specifically relates to a mineral casting hydrostatic guide rail and a manufacturing method thereof, wherein the hydrostatic guide rail comprises a base, the base is made of a mineral casting material, L-shaped parts are symmetrically fixedly provided at both ends of the base in the width direction, a cover plate is fixedly connected to the upper end of the L-shaped part, and the horizontal projections of the cover plate and the L-shaped part coincide; a wear-resistant layer is bonded to the outer surface of the L-shaped part; compared with the prior art, the present invention changes the current situation in which metal materials are mostly used to process hydrostatic guide rails in the prior art, the hydrostatic guide rail base is a mineral casting, and the guide rail coating and the mineral casting body are melted and bonded together by high-precision mold cold pressing without falling off, and the guide rail coating forms a dense structure and high-precision wear-resistant layer working surface after solidification; two methods for manufacturing hydrostatic guide rails of mineral castings are provided, wherein the guide rail coating and the base are melted and bonded together by mold one or mold two after cold pressing for a certain period of time to form a wear-resistant layer.

Description

Technical Field

[0001] The present invention belongs to the technical field of the preparation of mineral castings, and particularly relates to a hydrostatic guideway made of mineral castings and a manufacturing method thereof. Background Art

[0002] In the prior art, the materials of hydrostatic guideways are generally graphite materials, metal materials, ceramic materials, and composite materials; the hydrostatic guideways made of them have their own advantages and disadvantages. Among them, it is relatively common to use metal materials to make hydrostatic guideways.

[0003] In actual production, when processing hydrostatic guideways with metal materials, quality problems or even scrapping often occur due to unqualified precision such as geometric tolerances, dimensional tolerances, and workpiece bending deformation. Therefore, it is difficult to process hydrostatic guideways with metal materials and the qualified rate is low. Summary of the Invention

[0004] In view of the technical problems existing in the processing of hydrostatic guideways in the prior art, the present invention provides a hydrostatic guideway made of mineral castings and a manufacturing method thereof.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows: A hydrostatic guideway made of mineral castings includes a base, the base is made of mineral castings, the mineral castings include epoxy resin, symmetrically fixed L-shaped parts are provided at both ends in the width direction of the base, a cover plate is fixedly connected to the upper end of the L-shaped parts, and the horizontal projections of the cover plate and the L-shaped parts coincide; a wear-resistant layer is adhered to the outer surface of the L-shaped parts, and the wear-resistant layer and the L-shaped parts are crosslinked into one body;

[0006] The L-shaped parts and the cover plate enclose a U-shaped chute, and the U-shaped chute can cooperate with a hydrostatic slider.

[0007] Preferably, the wear-resistant layer includes epoxy resin and wear-resistant materials, and the wear-resistant materials are silica sand, alumina powder, or quartz powder.

[0008] Preferably, the thickness of the wear-resistant layer is 2 mm - 5 mm.

[0009] Preferably, a wear-resistant layer is also adhered to the lower surface of the cover plate.

[0010] Preferably, both the base and the cover plate are artificial granite or artificial basalt.

[0011] A manufacturing method of a hydrostatic guideway made of mineral castings, preparing the hydrostatic guideway made of mineral castings includes the following steps:

[0012] Step 1: Cast a base made of mineral castings;

[0013] Step 2: Apply a guideway coating material on the outer surface of the L-shaped parts of the base, and the guideway coating material includes epoxy resin and wear-resistant materials;

[0014] Step 3: Cold-press the outer surface of the L-shaped part after applying the guide rail coating material using Die 1. Die 1 can match the outer surface of the L-shaped part, and a release agent is coated on the surface of Die 1. After the guide rail coating material cures and forms, it becomes the wear-resistant layer on the outer surface of the L-shaped part.

[0015] Step 4: Bond the cover plate on the upper surface of the L-shaped part.

[0016] Preferably, the cold pressing of the outer surface of the L-shaped part after applying the guide rail coating material using Die 1 is achieved through Die Pressing Device 1. Die Pressing Device 1 includes Linear Telescopic Device 1. The movable end of Linear Telescopic Device 1 is fixedly connected to Die 1, and the center line of Linear Telescopic Device 1 forms a 45-degree angle with the bottom surface of the base.

[0017] A manufacturing method of a mineral casting hydrostatic guide rail. Preparing the mineral casting hydrostatic guide rail includes the following steps:

[0018] Step 1: Cast and produce an integrally formed base and cover plate.

[0019] Step 2: Apply the guide rail coating material on the outer surface of the L-shaped part of the base and the lower surface of the cover plate. The guide rail coating material includes epoxy resin and wear-resistant material.

[0020] Step 3: Cold-press the outer surface of the U-shaped chute after applying the guide rail coating material using Die 2. Die 2 can match the outer surface of the U-shaped chute, and a release agent is coated on the surface of Die 2. After the guide rail coating material cures and forms, it becomes the wear-resistant layer on the outer surface of the U-shaped chute.

[0021] Preferably, the cold pressing of the outer surface of the U-shaped chute after applying the guide rail coating material using Die 2 is achieved through Die Pressing Device 2.

[0022] Preferably, Die Pressing Device 2 includes a cylinder barrel, a first piston rod, a second piston rod, and a dual-purpose air pump for charging and suction. An air port is provided at the middle position of the cylinder barrel. The air port is connected to the intake port or the outlet port of the dual-purpose air pump for charging and suction through an air pipe. The first piston rod and the second piston rod are symmetrically arranged inside the cylinder barrel. A first piston is installed at the end of the first piston rod close to the second piston rod, and a second piston is installed at the end of the second piston rod close to the first piston rod. End caps 1 and 2 are respectively fixedly provided at both ends of the cylinder barrel. A through hole 1 for sliding connection with the first piston rod is provided at the center of End cap 1, and a through hole 2 for sliding connection with the second piston rod is provided at the center of End cap 2.

[0023] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0024] (1) It changes the current situation in the prior art where metal materials are mostly used for machining hydrostatic guides. The hydrostatic guide base in the present invention is a mineral casting. Through cold pressing with a high-precision mold, the guide coating dressing and the mineral casting body are fused and adhered together (without falling off). After the guide coating dressing cures, a wear-resistant layer working surface with a dense structure and high precision is formed;

[0025] (2) Using the manufacturing method of the mineral casting hydrostatic guide of the present invention to produce hydrostatic guides greatly saves time and production costs;

[0026] (3) The present invention provides two manufacturing methods for mineral casting hydrostatic guides. Method one is to cold press the outer surface of the L-shaped part after applying the guide coating dressing using mold one; Method two is to cold press the outer surface of the U-shaped chute after applying the guide coating dressing using mold two. After cold pressing for a certain time (72h), the guide coating dressing and the base are fused and adhered together to form a wear-resistant layer;

[0027] (4) When the air port in mold pressing device two is connected to the air outlet of the air pump for both charging and suction, piston rod one and piston rod two extend simultaneously to drive mold two to move, changing the current situation in the prior art where one piston rod of the double-acting telescopic cylinder extends while the other shortens. In the present invention, piston rod one and piston rod two of mold pressing device two can contract or extend simultaneously;

[0028] (5) The wear-resistant layer and the hydrostatic slider form an oil film through hydrostatic oil to achieve high-precision and low-friction motion coupling;

[0029] (6) Since the mineral casting also contains epoxy resin, after the guide coating dressing containing epoxy resin cures and forms, the connection between the wear-resistant layer and the mineral casting is the crosslinking between epoxy resins, without an obvious interface, and the wear-resistant layer never falls off. Brief Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments:

[0031] Figure 1 It is a schematic diagram of the mineral casting hydrostatic guide in Embodiment 1 (before the cover plate is bonded);

[0032] Figure 2 It is a schematic diagram of the mineral casting hydrostatic guide in Embodiment 2;

[0033] Figure 3 It is a schematic diagram of mold one used in the manufacturing process of the mineral casting hydrostatic guide;

[0034] Figure 4 It is a schematic diagram of cold pressing the outer surface of the L-shaped part after applying the guide coating dressing using mold one Figure 1 ;

[0035] Figure 5Schematic of the outer surface of the L-shaped part after cold pressing and coating the guide rail coating material for Die 1 Figure 2 ;

[0036] Figure 6 Schematic of Die 2 used in the manufacturing process of the mineral casting hydrostatic guide rail;

[0037] Figure 7 Schematic of the outer surface of the C-shaped chute after cold pressing and coating the guide rail coating material for Die 2 Figure 1 ;

[0038] Figure 8 Schematic of the outer surface of the C-shaped chute after cold pressing and coating the guide rail coating material for Die 2 Figure 2 ;

[0039] Fig. 9 Schematic of Die Compression Device 2 used in the manufacturing of the hydrostatic guide rail in Example 2 Figure 1 ;

[0040] Fig.10 Schematic of Die Compression Device 2 used in the manufacturing of the hydrostatic guide rail in Example 2 Figure 2 。

[0041] Explanation of reference numerals:

[0042] 1 - Base, 2 - C-shaped chute, 3 - Cover plate, 4 - L-shaped part;

[0043] 5 - Die 1, 6 - Linear telescopic device 1; 7 - Die 2;

[0044] 8 - Die Compression Device 2, 81 - Cylinder barrel, 82 - Piston rod 1, 83 - Piston rod 2, 84 - Air port. Detailed implementation manners

[0045] In order to more clearly understand the above-mentioned objects, features, and advantages of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0046] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0047] Example 1

[0048] The following combines Figure 1 、 Figure 3-Figure 5 to further illustrate a mineral casting hydrostatic guide rail in Example 1, as Figure 1As shown in the figure, it includes a base 1 made of mineral casting. The mineral casting contains epoxy resin. At both ends of the base 1 in the width direction, L-shaped parts 4 are symmetrically fixed. At the upper end of the L-shaped part 4, a cover plate 3 is fixedly connected. The horizontal projection of the cover plate 3 coincides with that of the L-shaped part 4. An abrasion-resistant layer is adhered to the outer surface of the L-shaped part 4, and the abrasion-resistant layer is crosslinked with the L-shaped part 4 as a whole.

[0049] As Figure 1 shown, the L-shaped part 4 and the cover plate 3 enclose a U-shaped sliding groove 2, and the U-shaped sliding groove 2 can cooperate with a hydrostatic slider.

[0050] The abrasion-resistant layer includes epoxy resin and abrasion-resistant materials. The abrasion-resistant materials are silica sand, alumina powder or quartz powder. The thickness of the abrasion-resistant layer is 5 mm.

[0051] Both the base 1 and the cover plate 3 are artificial granite (including epoxy resin and granite blocks).

[0052] A manufacturing method of a mineral casting hydrostatic guide rail. Preparing the above-mentioned mineral casting hydrostatic guide rail includes the following steps:

[0053] Step 1: Cast a base 1 made of mineral casting.

[0054] Step 2: Apply a guide rail coating material on the outer surface of the L-shaped part 4 of the base 1. The guide rail coating material includes epoxy resin and abrasion-resistant materials.

[0055] Step 3: Use a first mold 5 (as Figure 3 shown) to cold-press the outer surface of the L-shaped part 4 coated with the guide rail coating material. The first mold 5 can match the outer surface of the L-shaped part 4. The surface of the first mold 5 is coated with a release agent. After the guide rail coating material is cured (after 72 hours), it becomes the abrasion-resistant layer on the outer surface of the L-shaped part 4 (the dimensional accuracy reaches the micron level).

[0056] Step 4: Bond the cover plate 3 on the upper surface of the L-shaped part 4 (apply epoxy resin on the upper surface of the L-shaped part 4, then align the cover plate 3 with the upper surface of the L-shaped part 4, and then cold-press the cover plate 3 from above for a certain period of time).

[0057] As Figure 4 and Figure 5 shown, the cold pressing of the outer surface of the L-shaped part 4 coated with the guide rail coating material by the first mold 5 is realized through a first mold pressing device. The first mold pressing device includes a first linear telescopic device 6. The movable end of the first linear telescopic device 6 is fixedly connected to the first mold 5. The center line of the first linear telescopic device makes a 45-degree angle with the bottom surface of the base 1.

[0058] Step 1: Cast the base 1 made of mineral casting, including raw material proportioning, mixing and stirring, mold making, component assembly, casting, and ramming the casting, and finally forming. Mineral casting has good forming ability, and other inserts such as wire pipes, hydraulic pipes, and steel parts can be embedded in the casting and formed at one time. Moreover, due to the low viscosity of the mineral material and the low shrinkage rate during curing and forming, the mineral casting obtains better accuracy and surface roughness, further reducing the cost of machining.

[0059] Since the mineral casting also contains epoxy resin, after the guide rail coating material containing epoxy resin is cured and formed, the connection between the wear-resistant layer and the mineral casting is the crosslinking between epoxy resins, without an obvious interface, and the wear-resistant layer will never fall off.

[0060] Example 2

[0061] The difference between this example and Example 1 is that both the base 1 and the cover plate 3 are artificial basalt. A wear-resistant layer is also adhered to the lower surface of the cover plate 3. The thickness of the wear-resistant layer is 2 mm.

[0062] A manufacturing method of a mineral casting hydrostatic guide rail, preparing the above-mentioned mineral casting hydrostatic guide rail includes the following steps:

[0063] Step 1: As Figure 2 shown, cast and produce the integral base 1 and cover plate 3;

[0064] Step 2: Apply the guide rail coating material on the outer surface of the L-shaped part 4 of the base 1 and the lower surface of the cover plate 3. The guide rail coating material includes epoxy resin and wear-resistant material;

[0065] Step 3: Use the second mold 7 (as Figure 6 shown) to cold-press the outer surface of the U-shaped chute 2 coated with the guide rail coating material. The second mold 7 can match the outer surface of the U-shaped chute 2, and the surface of the second mold 7 is coated with a release agent. After the guide rail coating material is cured and formed, it becomes the wear-resistant layer on the outer surface of the U-shaped chute 2.

[0066] As Figure 7 and Figure 8 shown, the second mold pressing device 8 is used to cold-press the outer surface of the U-shaped chute 2 coated with the guide rail coating material by the second mold 7.

[0067] As Fig. 9 and Fig.10As shown, the second mold pressing device 8 includes a cylinder barrel 81, a first piston rod 82, a second piston rod 83, and a dual-purpose air pump for charging and suction; an air port 84 is provided at the middle position of the cylinder barrel 81, and the air port 84 is communicated with the air inlet or air outlet of the dual-purpose air pump for charging and suction through an air pipe; the first piston rod 82 and the second piston rod 83 are symmetrically arranged in the cylinder barrel 81, a first piston is installed at the end of the first piston rod 82 close to the second piston rod 83, and a second piston is installed at the end of the second piston rod 83 close to the first piston rod 82; end covers one and two are respectively fixedly provided at both ends of the cylinder barrel 81, a through hole one for slidably connecting with the first piston rod 82 is provided at the center of the end cover one, and a through hole two for slidably connecting with the second piston rod 83 is provided at the center of the end cover two.

[0068] When the air port 84 in the second mold pressing device 8 is communicated with the air outlet of the dual-purpose air pump for charging and suction, the first piston rod 82 and the second piston rod 83 simultaneously extend to drive the second mold 7 to move and cold-press the outer surface of the C-shaped chute 2 after applying the coating material for the guide rail; it changes the current situation that one piston rod of the double-acting telescopic cylinder in the prior art extends while the other shortens, and the first piston rod 82 and the second piston rod 83 can simultaneously extend or shorten.

[0069] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification and equivalent change made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A mineral casting hydrostatic guide rail, characterized in that: It includes a base (1), the base (1) is made of mineral casting material, the mineral casting includes epoxy resin, symmetrically fixed L-shaped parts (4) are provided at both ends in the width direction of the base (1), a cover plate (3) is fixedly connected to the upper end of the L-shaped part (4), and the horizontal projections of the cover plate (3) and the L-shaped part (4) coincide; a wear-resistant layer is adhered to the outer surface of the L-shaped part (4), and the wear-resistant layer and the L-shaped part (4) are crosslinked into one body; the wear-resistant layer includes epoxy resin and wear-resistant material, and the wear-resistant material is silica sand, alumina powder or quartz powder; The L-shaped part (4) and the cover plate (3) enclose a U-shaped chute (2), and the U-shaped chute (2) can cooperate with a hydrostatic slider.

2. The mineral casting hydrostatic guide rail according to claim 1, characterized in that: The thickness of the wear-resistant layer is 2 mm - 5 mm.

3. The mineral casting hydrostatic guide rail according to claim 2, characterized in that: A wear-resistant layer is also adhered to the lower surface of the cover plate (3).

4. The mineral casting hydrostatic guide rail according to claim 1, characterized in that: Both the base (1) and the cover plate (3) are artificial granite or artificial basalt.

5. A method for manufacturing a mineral casting hydrostatic guide rail, characterized in that: Preparing the mineral casting hydrostatic guide rail according to claim 1 or 2 includes the following steps: Step 1: Cast and produce a base (1) made of mineral casting material; Step 2: Apply a guide rail coating material on the outer surface of the L-shaped part (4) of the base (1), and the guide rail coating material includes epoxy resin and wear-resistant material; Step 3: Cold-press the outer surface of the L-shaped part (4) coated with the guide rail coating material by using a mold one (5), the mold one (5) can match the outer surface of the L-shaped part (4), a release agent is coated on the surface of the mold one (5), and after the guide rail coating material is cured and formed, it becomes the wear-resistant layer on the outer surface of the L-shaped part (4); Step 4: Adhere a cover plate (3) on the upper surface of the L-shaped part (4).

6. The method for manufacturing a mineral casting hydrostatic guide rail according to claim 5, characterized in that: The cold pressing of the outer surface of the L-shaped part (4) coated with the guide rail coating material by the mold one (5) is realized through a mold pressing device one; the mold pressing device one includes a linear telescopic device one (6), the movable end of the linear telescopic device one (6) is fixedly connected to the mold one (5), and the center line of the linear telescopic device one (6) forms a 45-degree angle with the bottom surface of the base (1).

7. A method for manufacturing a mineral casting hydrostatic guide rail, characterized in that: Preparing the mineral casting hydrostatic guide rail according to claim 3 includes the following steps: Step 1: Cast and produce an integrally formed base (1) and cover plate (3); Step 2: Apply a guide rail coating material on the outer surface of the L-shaped part (4) of the base (1) and the lower surface of the cover plate (3), and the guide rail coating material includes epoxy resin and wear-resistant material; Step 3: Cold-press the outer surface of the U-shaped chute (2) coated with the guide rail coating material by using a mold two (7), the mold two (7) can match the outer surface of the U-shaped chute (2), a release agent is coated on the surface of the mold two (7), and after the guide rail coating material is cured and formed, it becomes the wear-resistant layer on the outer surface of the U-shaped chute (2).

8. The method for manufacturing a mineral casting hydrostatic guide rail according to claim 7, characterized in that: The cold pressing of the outer surface of the U-shaped chute (2) coated with the guide rail coating material by the mold two (7) is realized through a mold pressing device two (8).

9. The method for manufacturing a mineral casting hydrostatic guide rail according to claim 8, characterized in that: The mold clamping device (2) (8) comprises a cylinder (81), a piston rod (82), a piston rod (83) and an air pump for inflation and suction; an air port (84) is provided in the middle of the cylinder (81), and the air port (84) is connected to an air inlet or an air outlet of the air pump for inflation and suction through an air pipe; the piston rod (82) and the piston rod (83) are symmetrically arranged in the cylinder (81), a piston (1) is installed at the end of the piston rod (82) close to the piston rod (83), and a piston (2) is installed at the end of the piston rod (83) close to the piston rod (82); an end cover (1) and an end cover (2) are fixedly provided at both ends of the cylinder (81), a through hole (1) is provided at the center of the end cover (81) and is slidably connected to the piston rod (82), and a through hole (2) is provided at the center of the end cover (81) and is slidably connected to the piston rod (83).

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