Foamed ceramic composite machine tool body with flow channel and rib hole separated in layers

Abstract

This invention provides a foamed ceramic composite machine tool bed with layered isolation between flow channels and ribs. It includes a foamed ceramic base with an internal channel structure comprising a cooling layer and a reinforcing layer. The cooling layer is located above the reinforcing layer, and the cooling layer and reinforcing layer are completely isolated by a solid foamed ceramic partition. The cooling layer contains multiple horizontally parallel flow channels, each with a sealing layer on its inner wall. The flow channels also have media inlets and outlets on the sidewalls of the foamed ceramic base. The reinforcing layer contains horizontal and vertical slots arranged in a three-dimensional mesh pattern. Reinforcing ribs fill these slots and are integrally formed with the foamed ceramic base, creating a built-in reinforcing skeleton. This foamed ceramic composite machine tool bed offers advantages such as strong active temperature control, no interference between the flow channels and the skeleton, simple manufacturing process, lightweight design, strong vibration absorption and damping capabilities, high structural strength, and good dimensional stability.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, specifically to a foamed ceramic composite machine tool bed with layered isolation between flow channels and rib holes. Background Technology

[0002] The machine tool bed is the fundamental supporting component of a machine tool, and its performance directly affects machining accuracy and stability. There are three main types of common machine tool beds: First, cast iron beds, which have high compressive strength but are heavy, difficult to transport and install, and have poor damping performance, making them prone to vibration during high-speed machining. Second, natural granite beds, which have good vibration absorption and a low coefficient of thermal expansion, but have natural defects, are difficult and costly to manufacture, and large beds require splicing, resulting in poor overall integrity. Third, mineral casting beds, made of aggregate and resin binder, offer improved damping performance, but the resin curing shrinkage is large, resulting in insufficient dimensional stability. Furthermore, the mismatch in the coefficients of thermal expansion between the resin and aggregate can easily lead to micro-cracks over long-term use.

[0003] Furthermore, existing machine tool beds generally lack active thermal management capabilities. During prolonged high-speed machining, frictional heat and cutting heat generated by moving parts are gradually conducted to the machine bed, causing localized temperature rises and thermal deformation, which in turn affects machining accuracy. Although some high-end machine tools use external cooling systems, these systems are complex, occupy a large space, and their cooling effect is not uniform enough. Utility Model Content

[0004] To address the problems of existing machine tool beds that are difficult to balance in terms of lightweight, high damping, and high strength, and lack active thermal management capabilities, this utility model provides a foamed ceramic composite machine tool bed with layered isolation between the flow channels and ribs. It has the advantages of strong active temperature control, no interference between the flow channels and the frame, simple process, lightweight, strong vibration absorption and damping capabilities, high structural strength, and good dimensional stability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a foamed ceramic composite machine tool bed with layered isolation between flow channels and rib holes, comprising a foamed ceramic base. The foamed ceramic base has an internal channel structure, which includes a cooling layer and a reinforcing layer. The cooling layer is located above the reinforcing layer, and the cooling layer and the reinforcing layer are completely isolated by a solid foamed ceramic layer. The cooling layer has multiple horizontally parallel flow channel holes, and the inner wall of the horizontal flow channel holes is provided with a sealing layer. The horizontal flow channel holes have a medium inlet and a medium outlet on the side wall of the foamed ceramic base. The reinforcing layer has horizontal and vertical strip holes distributed in a three-dimensional mesh pattern. The horizontal and vertical strip holes are filled with reinforcing ribs, which are solidified with the foamed ceramic base to form an internal reinforcing skeleton.

[0006] Furthermore, the cooling layer does not have longitudinal slots, and the transverse flow channels are not directly connected to each other. Multiple transverse flow channels are connected in series at the end of the foamed ceramic base through external pipes to form an S-shaped reciprocating flow channel.

[0007] Furthermore, the foamed ceramic solid partition is integrally sintered into the foamed ceramic base, and there are no seams between it and the cooling layer and the reinforcing layer.

[0008] Furthermore, the sealing layer is an epoxy resin coating, uniformly coated on the inner wall of the transverse flow channel hole, with a thickness of 0.5-1.5mm, used to prevent the cooling medium from seeping into the interior of the foamed ceramic base.

[0009] Furthermore, metal pipe joints are pre-embedded at the medium inlet and medium outlet, and the metal pipe joints are integrated with the sealing layer of the inner wall of the transverse flow channel hole.

[0010] Furthermore, the reinforcing ribs completely fill the transverse and longitudinal slots of the reinforcing layer, and the material of the reinforcing ribs penetrates into the micropores on the surface of the inner wall of the foamed ceramic substrate, forming a mechanically interlocking structure.

[0011] Furthermore, it also includes a work surface, which is fixed to the upper surface of the foamed ceramic base and covers the cooling layer.

[0012] Furthermore, the top surface of the foamed ceramic base is recessed with multiple grooves, and the bottom surface of the worktable is provided with multiple protrusions that can be inserted into the grooves.

[0013] This invention achieves the following beneficial effects through a composite structure design that separates the cooling layer and the reinforcing layer within the foamed ceramic base:

[0014] 1. Strong active temperature control capability: A cooling layer is specially designed inside the foamed ceramic base, and multiple transverse flow channels are arranged close to the bottom of the worktable. Coolant or constant temperature medium can be introduced to actively remove the heat generated by the machine tool operation, control the bed temperature uniformly, fundamentally reduce thermal deformation, and ensure long-term machining accuracy.

[0015] 2. Good cooling uniformity: The cooling layer is independent of the reinforcing skeleton, and the arrangement spacing and path of the transverse flow channel holes can be flexibly optimized without being constrained by the rib mesh; the foamed ceramic solid partition also acts as a heat spreader, making the temperature distribution under the workbench more uniform and further reducing local thermal deformation.

[0016] 3. The flow channels and the skeleton do not interfere with each other: The cooling layer and the reinforcing layer are completely physically isolated by a foamed ceramic solid partition. The transverse flow channel holes of the cooling layer and the longitudinal strip holes of the reinforcing layer do not intersect or connect in space, which fundamentally avoids the problem of blocking the cooling flow channels when the reinforcing ribs are filled. No additional sealing or through-hole treatment is required at the junction. The structure is simple, the process is simple, and the reliability is high.

[0017] 4. Lightweight: The density of the foamed ceramic base is only 0.5-0.7g / cm³, which greatly reduces the weight of the whole machine compared with the traditional cast iron bed, significantly reducing the difficulty of handling, installation and carrying upstairs. At the same time, it reduces the driving energy consumption of the machine tool's moving parts and improves the response speed.

[0018] 5. Strong vibration absorption and damping capacity: The foamed ceramic base itself has porous vibration absorption characteristics, and the reinforcing ribs filled inside the reinforcing layer also have high damping performance. The worktable surface and the reinforcing ribs are made of the same material and have the same coefficient of thermal expansion, which can quickly absorb and consume the vibration energy generated during processing, making the machine tool run more smoothly and the processed parts have a higher surface finish and better dimensional accuracy.

[0019] 6. High structural strength: The reinforcing ribs in the reinforcing layer form a complete three-dimensional reinforcing skeleton network. The reinforcing rib material penetrates into the micropores of the base to form a mechanical interlock, ensuring that the layers are firmly bonded and do not separate. The worktable is connected to the groove on the top surface of the foamed ceramic base through the protrusions, which further enhances the shear and peel resistance between the worktable and the base, greatly enhancing the overall structural strength of the bed.

[0020] 7. Good dimensional stability: The active cooling channel can eliminate the main source of thermal deformation; the worktable and reinforcing ribs are made of the same material with the same coefficient of thermal expansion, so there will be no internal stress or deformation due to the difference in expansion when the temperature changes; the foamed ceramic base itself has a low coefficient of thermal expansion, ensuring that the entire bed can maintain dimensional stability under different temperature environments and working conditions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the foamed ceramic composite machine tool bed with layered isolation between the flow channels and rib holes in this utility model.

[0022] Figure 2 This is a side view of the bed of the foamed ceramic composite machine tool with layered isolation between the flow channels and rib holes according to this utility model.

[0023] Figure 3 This is a cross-sectional view of the foamed ceramic base along the cooling layer in this utility model.

[0024] Figure 4 This is a cross-sectional view of the foamed ceramic base along the reinforcing layer (without reinforcing ribs) in this utility model.

[0025] Figure 5 This is a cross-sectional view of the foamed ceramic base along the reinforcing layer (filled reinforcing ribs) in this utility model.

[0026] Figure 6 This is a cross-sectional view of the foamed ceramic base and the worktable surface connected by a groove and a protrusion structure in this utility model.

[0027] Reference numerals: 1. Foamed ceramic base; 10. Cooling layer; 20. Reinforcing layer; 30. Foamed ceramic solid partition; 11. Transverse flow channel hole; 12. Sealing layer; 13. Medium inlet; 14. Medium outlet; 15. Metal pipe joint; 21. Transverse strip hole; 22. Longitudinal strip hole; 23. Reinforcing rib; 24. Worktable surface; 25. Protrusion; 3. External pipeline. Detailed Implementation

[0028] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] Please see the appendix Figure 1-6 As shown, this utility model provides a foamed ceramic composite machine tool bed with layered isolation between flow channels and rib holes, including a foamed ceramic base 1. The foamed ceramic base 1 has a channel structure inside. The channel structure includes a cooling layer 10 and a reinforcing layer 20. The cooling layer 10 is located above the reinforcing layer 20, and the cooling layer 10 and the reinforcing layer 20 are completely isolated by a foamed ceramic solid partition 30.

[0030] The cooling layer 10 is provided with a plurality of transverse flow channel holes 11 arranged in parallel along the horizontal direction. The inner wall of the transverse flow channel holes 11 is provided with a sealing layer 12, and the transverse flow channel holes 11 are provided with a medium inlet 13 and a medium outlet 14 on the side wall of the foamed ceramic base 1.

[0031] The reinforcing layer 20 has transverse slots 21 and longitudinal slots 22 arranged in a three-dimensional mesh pattern. The transverse slots 21 and longitudinal slots 22 are filled with reinforcing ribs 23. The reinforcing ribs 23 are solidified with the foamed ceramic base 1 to form an internal reinforcing skeleton.

[0032] The work surface 2 is fixed on the upper surface of the foamed ceramic base 1 and covers the cooling layer 10.

[0033] This invention relates to a foamed ceramic composite machine tool bed with layered isolation of flow channels and ribs. The internal pore structure of the foamed ceramic base 1 is spatially divided into two independent functional layers: the upper layer is a cooling layer 10, with multiple transverse flow channels 11 for introducing cooling medium to achieve active temperature control; the lower layer is a reinforcing layer 20, with a complete intersecting grid of transverse and longitudinal pores 21 and 22, completely filled with reinforcing ribs 23 to form a reinforcing skeleton. The two layers are completely physically isolated by a solid foamed ceramic partition 30, ensuring that the pores of the cooling layer 10 and the reinforcing layer 20 do not intersect or connect spatially. This layered isolation design avoids the problem of cooling flow channels being blocked when the reinforcing ribs 23 are filled, eliminating the need for any through holes or sealing treatments at intersections, resulting in a simpler and more reliable structure. Simultaneously, the cooling layer 10, being adjacent to the worktable 2, can efficiently remove heat conducted from the worktable 2, achieving high cooling efficiency; the reinforcing layer 20 remains independent and intact, with its structural strength unaffected.

[0034] In this utility model, reference is made to the appendix. Figure 3 The cooling layer 10 has no longitudinal perforations, and the transverse flow channel holes 11 are not directly connected to each other. Multiple transverse flow channel holes 11 are connected in series at the end of the foamed ceramic base 1 through an external pipe 3 to form an S-shaped reciprocating flow channel. The cooling layer 10 only has transverse flow channel holes 11 and no longitudinal perforations, ensuring complete structural separation between the cooling layer 10 and the reinforcing layer 20. The multiple transverse flow channel holes 11 are not connected to each other and are independent. Connecting the transverse flow channel holes 11 in series through the external pipe 3 to form an S-shaped flow channel allows for flexible adjustment of the flow path of the cooling medium, achieving uniform cooling.

[0035] It should be noted that the transverse flow channel holes 11 of the cooling layer 10 are not limited to being arranged in a completely parallel manner. They can also be arranged with varying spacing or with a partially curved direction according to thermal management requirements. As long as the cooling layer 10 and the reinforcing layer 20 are completely physically isolated by the foamed ceramic solid partition 30, and the cooling layer 10 does not have any longitudinal slots communicating with the reinforcing layer 20, they are all within the protection scope of this utility model.

[0036] In this utility model, reference is made to the appendix. Figure 2 The foamed ceramic solid partition 30 has a thickness of 10-15 cm. It is integrally sintered into the foamed ceramic base 1 and has no seams between it and the cooling layer 10 and the reinforcing layer 20. The 10-15 cm thick foamed ceramic solid partition 30 provides sufficient structural strength to prevent mutual interference between the cooling layer 10 and the reinforcing layer 20 due to pressure or vibration. It also acts as a heat spreader, ensuring that the cooling energy from the cooling layer 10 is evenly transferred to the worktable surface 2, preventing localized temperature differences on the worktable surface 2 due to channel spacing. The integral sintering ensures no seams between the partition and the upper and lower layers, eliminating weak points prone to leakage.

[0037] In this utility model, reference is made to the appendix. Figure 3 The sealing layer 12 is an epoxy resin coating, uniformly coated on the inner wall of the transverse flow channel holes 11, with a thickness of 0.5-1.5 mm, to prevent the cooling medium from seeping into the interior of the foamed ceramic base 1. The foamed ceramic base 1 itself has a microporous structure; if the cooling medium seeps in, it will not only reduce cooling efficiency but may also cause material damage due to liquid expansion and contraction. Because the cooling layer 10 does not have longitudinal slots, and the inner wall of the transverse flow channel holes 11 is a complete and continuous cylindrical surface without intersecting openings, the coating of the sealing layer 12 is more uniform and without dead corners, significantly improving sealing reliability. The epoxy resin coating effectively seals the micropores on the inner wall of the flow channel, forming a dense, impermeable layer. Simultaneously, the epoxy resin bonds well with the foamed ceramic base 1, making it less prone to peeling off over long-term use.

[0038] In this utility model, reference is made to the appendix. Figure 1-3 Metal pipe joints 15 are pre-embedded at the medium inlet 13 and the medium outlet 14. The metal pipe joints 15 are integrally connected to the sealing layer 12 on the inner wall of the transverse flow channel hole 11. The pre-embedded metal pipe joints 15 can be easily connected to the external cooling system and are integrally connected to the sealing layer 12 to ensure that there is no leakage at the interface.

[0039] In this utility model, reference is made to the appendix. Figure 5 The reinforcing ribs 23 completely fill the transverse and longitudinal slots 21 and 22 of the reinforcing layer 20, and the material of the reinforcing ribs 23 penetrates into the micropores on the surface of the inner wall of the foamed ceramic base 1, forming a mechanically interlocking structure. The reinforcing ribs 23 completely fill the transverse and longitudinal slots 21 and 22 without leaving gaps, ensuring a continuous and complete internal framework. Simultaneously, the material of the reinforcing ribs 23 penetrates into the micropores on the surface of the foamed ceramic base 1, and after curing, forms countless tiny resin nails, firmly locking the reinforcing ribs 23 and the foamed ceramic base 1 together. Since the reinforcing layer 20 is completely isolated from the cooling layer 10, the filling of the reinforcing ribs 23 does not affect the transverse flow channel holes 11 of the cooling layer 10, simplifying the filling process.

[0040] In this invention, the foamed ceramic base 1 is a one-piece sintered structure with a density of 0.5-0.7 g / cm³. The one-piece sintering of the foamed ceramic base 1 ensures good integrity and eliminates seams, unlike natural granite which requires multiple pieces and creates weak points. The density control between 0.5-0.7 g / cm³ makes the entire machine bed very lightweight, simplifying transportation and installation, and reducing energy consumption during machine tool movement. The transverse flow channel holes 11 of the cooling layer 10, the transverse strip holes 21 and longitudinal strip holes 22 of the reinforcing layer 20, and the foamed ceramic solid partition layer 30 are all formed in one piece using a mold during sintering, simplifying the process and achieving high precision.

[0041] In this utility model, reference is made to the appendix. Figure 6As shown, to increase the connection stability between the foamed ceramic base 1 and the worktable 2, the top surface of the foamed ceramic base 1 is provided with multiple recesses, and the bottom surface of the worktable 2 is provided with multiple protrusions 24 that insert into the recesses. The protrusions 24 and the recesses can be fitted with an interference fit or adhesive can be applied during assembly to make the connection between the worktable 2 and the foamed ceramic base 1 more secure. It should be noted that the recesses should be positioned to avoid the area above the transverse flow channel holes 11 in the cooling layer 10, to prevent penetration of the sealing layer 12 or weakening of the structure of the cooling layer 10.

[0042] In this invention, the reinforcing rib 23 is composed of 98±0.5% mineral composite material and 2±0.5% basalt wire. The mineral composite material constitutes the majority, ensuring the density and bonding strength after filling; while the small amount of basalt wire acts like short reinforcing bars in concrete, effectively holding the surrounding material together, preventing cracking, and providing a toughening effect. The mineral composite material comprises the following components by weight: 65±2 parts basalt, 20±2 parts basalt powder, 1.5-2 parts fiber mixture, 7±1 parts modified epoxy resin, 3±0.5 parts curing agent, 5±1 parts functional filler, 0.07±0.01 parts polydimethylsiloxane defoamer, antimony additive (added at 0.25%±0.02% of the total weight of modified epoxy resin and curing agent in the mineral composite material), and bismuth additive (added at 0.25%±0.02% of the total weight of modified epoxy resin and curing agent in the mineral composite material). The mineral composite material uses specially modified epoxy resin and adds two special trace additives, antimony and bismuth. The main purpose of this is to make the reinforcing rib 23 less prone to thermal expansion and contraction when the weather changes, and to ensure that its dimensions are very stable. With the reinforcing rib 23 having stable dimensions, it can firmly hold the foamed ceramic base 1, and the entire bed will not deform due to temperature changes, thus ensuring the machining accuracy of the machine tool during long-term use.

[0043] The fiber mixture is composed of metal fibers and mineral fibers. Preferably, the metal fibers account for 40-60% of the total mass of the fiber mixture, and the mineral fibers account for 40-60% of the total mass of the fiber mixture. Metal fibers have high strength and good toughness, while mineral fibers bond firmly to the resin and are corrosion-resistant. The combination of the two can give full play to their respective advantages, so that the reinforcing rib 23 has both rigidity and toughness, and is not prone to fatigue cracks under long-term vibration.

[0044] The modified epoxy resin is prepared in the following steps:

[0045] Step 1: Preheat E-51 epoxy resin, polypropylene glycol diglycidyl ether, and octyl glycidyl ether to 40-50℃ to reduce viscosity and facilitate mixing. Polypropylene glycol diglycidyl ether acts as a flexible modifier, introducing flexible segments to reduce the brittleness of the cured resin, improve impact resistance, and reduce internal stress. Octyl glycidyl ether acts as an active diluent to reduce viscosity, facilitating mixing and casting with high filler content. Step 2: Add 690g of preheated E-51 epoxy resin, 247g of polypropylene glycol diglycidyl ether, and 124g of octyl glycidyl ether to the reactor in sequence. Start stirring at 100-150 rpm for 5-8 minutes to ensure thorough mixing of the three main materials. Step 3: While maintaining stirring, add BHT antioxidant 1... Add 3g of KH-560 coupling agent and 1g of polydimethylsiloxane defoamer, and continue stirring for 3-5 minutes to ensure complete dissolution and dispersion of the additives. KH-560 coupling agent forms chemical bonds between the modified epoxy resin and inorganic fillers (aggregates, powders), improving interfacial bonding strength and enhancing the mechanical properties of the composite material. BHT antioxidant inhibits the thermal oxidative aging of the modified epoxy resin during curing and use, extending the service life of the component. Polydimethylsiloxane defoamer can reduce pore defects and improve density and surface quality. Step 4: Add 0.2g of triethylamine catalyst, continue stirring for 2-3 minutes, mix evenly, and allow to stand for degassing under vacuum conditions (vacuum degree ≤ -0.095MPa) for 10-15 minutes to obtain the modified epoxy resin, which is then sealed and stored for later use.

[0046] The curing agent is composed of 30-70% polyetheramine and 30-70% alicyclic amine. Polyetheramine increases flexibility, while alicyclic amine increases rigidity. When flexibility is required, a curing agent of 70% polyetheramine and 30% alicyclic amine is preferred; when rigidity is required, a curing agent of 30% polyetheramine and 70% alicyclic amine is preferred.

[0047] The functional filler includes at least one of alumina powder and silica powder. Alumina powder and silica powder, as functional fillers, can further improve the wear resistance, heat resistance, and interfacial bonding strength of the mineral composite, and reduce curing internal stress.

[0048] The antimony additive is antimony trioxide, and the bismuth additive is an organic bismuth compound.

[0049] The foamed ceramic base 1 can be made of conventional foamed ceramic materials in the art, such as clay, feldspar, quartz, etc., with the addition of foaming agents such as silicon carbide or calcium carbonate. The raw materials are melted, foamed, and solidified by high-temperature sintering to form a porous ceramic body with micron-level closed pores inside. This process is prior art and will not be described in detail here.

[0050] The worktable 2 is made of the same material as the reinforcing rib 23, both being a mixture of mineral composite material and basalt wire that has been cured. The worktable 2 can be directly used as a workpiece mounting reference surface or a guide rail mounting surface, eliminating the need for an additional metal table. The worktable 2 and the reinforcing rib 23 have the same coefficient of thermal expansion, making them less prone to thermal expansion and contraction with temperature changes, resulting in excellent dimensional stability. They also possess high damping characteristics, further absorbing processing vibrations and improving processing accuracy. Furthermore, the worktable 2 exhibits superior wear resistance compared to the foamed ceramic base 1, extending the overall service life of the machine bed.

[0051] It should be noted that the number and spacing of the transverse flow channel holes 11 in the cooling layer 10 can be adjusted according to the bed size and cooling requirements; the series connection method between the transverse flow channel holes 11 is not limited to the series connection of external pipes at the ends, but can also be achieved by reserving an integrated manifold cavity connecting each transverse flow channel hole 11 at the end during the sintering of the foamed ceramic base 1, in order to simplify the external pipes. The number and spacing of the transverse strip holes 21 and longitudinal strip holes 22 in the reinforcing layer 20 can also be adjusted according to the bed size and load-bearing requirements. These modifications all fall within the protection scope of this utility model.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foamed ceramic composite machine tool bed with layered separation of flow channels and ribs, characterized in that: The invention includes a foamed ceramic base, the interior of which has a channel structure, the channel structure including a cooling layer and a reinforcing layer, the cooling layer being located above the reinforcing layer, and the cooling layer and the reinforcing layer being completely isolated by a foamed ceramic solid partition. The cooling layer is provided with multiple horizontal flow channel holes arranged in parallel along the horizontal direction. The inner wall of the horizontal flow channel holes is provided with a sealing layer, and the horizontal flow channel holes are provided with a medium inlet and a medium outlet on the side wall of the foamed ceramic base. The reinforcing layer has horizontal and vertical slots arranged in a three-dimensional mesh pattern. The horizontal and vertical slots are filled with reinforcing ribs, which are solidified with the foamed ceramic base to form an internal reinforcing skeleton.

2. The foamed ceramic composite machine tool bed with layered isolation between flow channels and rib holes as described in claim 1, characterized in that: The cooling layer does not have longitudinal slots, and the transverse flow channels are not directly connected to each other. Multiple transverse flow channels are connected in series at the end of the foamed ceramic base through external pipes to form an S-shaped reciprocating flow channel.

3. The foamed ceramic composite machine tool bed with layered isolation between flow channels and rib holes as described in claim 1, characterized in that: The foamed ceramic solid partition is integrally sintered into the foamed ceramic base and has no seam between it and the cooling layer and the reinforcing layer.

4. The foamed ceramic composite machine tool bed with layered isolation between flow channels and rib holes as described in claim 1, characterized in that: The sealing layer is an epoxy resin coating, uniformly coated on the inner wall of the transverse flow channel hole, with a thickness of 0.5-1.5mm, used to prevent the cooling medium from seeping into the interior of the foamed ceramic base.

5. The foamed ceramic composite machine tool bed with layered isolation between flow channels and rib holes as described in claim 1, characterized in that: Metal pipe joints are pre-embedded at the medium inlet and medium outlet, and the metal pipe joints are integrated with the sealing layer of the inner wall of the transverse flow channel hole.

6. The foamed ceramic composite machine tool bed with layered isolation between flow channels and rib holes as described in claim 5, characterized in that: The reinforcing ribs completely fill the transverse and longitudinal slots of the reinforcing layer, and the material of the reinforcing ribs penetrates into the micropores on the inner wall of the foamed ceramic base, forming a mechanically interlocking structure.

7. The foamed ceramic composite machine tool bed with layered isolation between flow channels and rib holes as described in claim 1, characterized in that: It also includes a work surface, which is fixed to the upper surface of the foamed ceramic base and covers the cooling layer.

8. The foamed ceramic composite machine tool bed with layered isolation between flow channels and rib holes as described in claim 1, characterized in that: The top surface of the foamed ceramic base has multiple recesses, and the bottom surface of the worktable has multiple protrusions that can be inserted into the recesses.

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