JP2009096652A - Method of manufacturing ceramic and method of manufacturing movement-guiding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of highly accurately and inexpensively manufacturing ceramics used for a mechanical component. <P>SOLUTION: The method of manufacturing ceramics implements a process including: a preparation step (step S10) of preparing ceramic raw material powder by stirring the ceramic raw material powder in which a prescribed quantity of a binder, a solvent and a sintering aid are blended; molding steps (step S11-S14) of deaerating and kneading the ceramic raw material powder to form ceramic clay paste, molding the ceramic clay paste and drying the molded ceramic clay paste to obtain a molding shaped in a desired semi-finished product; a degreasing step (step S15) of degreasing the molding; and a firing step (step S16) of firing the molding. The molding step includes a heat resistant material installation step (step S12, S13) of installing a heat resistant material in the molding, and the heat resistant material installed in the heat resistant material installation step is removed by carrying out a removal step (step S17) implemented after the firing step. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method for producing ceramics used for producing ceramics used for machine parts with high accuracy and at low cost.

  For example, motion guide devices such as ball screws, linear guides, linear motion bearings, ball splines, and the like are known as conventionally used machine elements. Such a motion guide device includes a raceway member having a rolling element rolling surface, a moving member having a loaded rolling element rolling surface opposite to the rolling element rolling surface, a rolling element rolling surface, and a loaded rolling element rolling surface. A plurality of rolling elements that are movably installed in a load rolling path constituted by the moving member, so that the moving member can reciprocate or rotate freely in the axial direction or circumferential direction of the track member. Device.

  In this type of motion guide device, a plurality of rolling elements disposed between the track member and the moving member repeatedly roll, and therefore, contact stress is repeatedly applied to the constituent members of the motion guide device. It will be. Therefore, a metal material or a resin material excellent in fatigue life, wear resistance, or the like is adopted as a material constituting the race member, the moving member, and the rolling element.

  However, in recent motion guide devices, there is an increasing demand for further speeding up and high acceleration / deceleration of the guide motion. As one solution for realizing such a request, conventional metal guides are used. There has been a demand to use ceramics as a constituent member instead of materials.

  However, with conventional ceramics, heat shrinkage occurs in the process of forming a sintered product after sintering from the state of the green body before sintering, so that a product dimensional accuracy that can be applied to a motion guide device is obtained. It was difficult. In addition, for example, in the case of the moving member constituting the motion guide device described above, it is necessary to form a groove shape or a hole shape extending in the longitudinal direction such as a loaded rolling element rolling surface, but it has a high hardness like ceramics. In materials, it is very difficult to accurately process the groove shape or hole shape as described above after sintering, and even if it can be processed, a huge processing cost is required. Had.

  The present invention has been made in view of the above-described problems, and the object thereof is, for example, a member having a complicated shape and requiring high product dimensional accuracy, such as a constituent member of a motion guide device. An object of the present invention is to provide a technique that enables manufacturing with ceramics and that can manufacture the ceramics with high accuracy and at low cost.

  The method for producing a ceramic according to the present invention comprises a preparation step of preparing a ceramic raw material powder by blending a predetermined amount of a binder, a solvent, and a sintering aid, and a forming process by subjecting the ceramic raw material powder to a forming process. A method for producing ceramics, comprising: a forming step to obtain; a degreasing step for degreasing the molded body; and a firing step for firing the molded body on which the degreasing treatment has been performed. The molding step includes a heat-resistant material installation step of installing a heat-resistant material on the molded body, and the heat-resistant material installed in the heat-resistant material installation step is removed in a removal step performed after the firing step. In this way, the product shape of the ceramic can be obtained.

  In the ceramic manufacturing method according to the present invention, the heat-resistant material installed on the molded body in the heat-resistant material installation step may be installed on a portion to be removed of the molded body formed by removal processing. it can.

  In the method for producing ceramics according to the present invention, the heat-resistant material installation step can be performed simultaneously with the forming step.

  Furthermore, in the method for producing a ceramic according to the present invention, it is preferable that the heat-resistant material has a smaller coefficient of thermal expansion than the ceramic.

  Furthermore, in the method for producing ceramics according to the present invention, the heat-resistant material can be made of a carbon-based material or a porous material.

  The method of manufacturing a motion guide device according to the present invention includes a raceway member having a rolling element rolling surface, a moving member having a loaded rolling element rolling surface facing the rolling element rolling surface, and the rolling element rolling surface. And a plurality of rolling elements that are movably installed in a loaded rolling path constituted by the rolling surface of the load rolling element, so that the moving member is in the axial direction or the circumferential direction of the track member A method of manufacturing a motion guide device that is freely reciprocally movable or rotationally movable, wherein the raceway member or the moving member is mixed with a predetermined amount of a binder, a solvent, and a sintering aid to prepare a ceramic raw material powder. A preparation step, a forming step of obtaining a formed body by performing a forming process on the ceramic raw material powder, a degreasing step of performing a degreasing process on the formed body, and a baking treatment on the formed body subjected to the degreasing process. A firing step to be performed and Is formed into a product shape, and the forming step further includes a heat-resistant material installation step of installing a heat-resistant material on the molded body, and is installed in the heat-resistant material installation step. The heat-resistant material is removed in a removal step performed after the firing step.

  According to the present invention, ceramics can be manufactured with high accuracy and at low cost. Therefore, for example, ceramics can be applied to a member that requires product dimensional accuracy, such as a member constituting a motion guide device.

  In particular, by applying high dimensional accuracy and light weight ceramics manufactured according to the present invention to a motion guide device, the guide accuracy of the motion guide device can be improved, speeded up, or increased, which has been difficult in the past. Acceleration / deceleration and the like can be realized.

  Further, according to the present invention, ceramics can be mass-produced at low cost, so that ceramics can be applied to members in fields where introduction is difficult due to cost problems.

  First, a schematic configuration of a linear guide device 10 that can be manufactured by the ceramic manufacturing method according to the present invention will be described with reference to FIG. Here, FIG. 1 is a longitudinal sectional view for explaining a schematic configuration of a linear guide device 10 that can be manufactured by the ceramic manufacturing method according to the present invention. In each embodiment described below, among the motion guide devices configured as the general linear guide device 10 illustrated by FIG. 1, a moving block that is a constituent member of the moving block 21 that is a moving member in particular. It is assumed that the main body portion 23 is manufactured.

  A linear guide device 10 shown in FIG. 1 includes a track rail 11 as a track member having a rolling element rolling surface 12 and a loaded rolling element rolling surface facing the rolling element rolling surface 12 formed on the track rail 11. As a plurality of rolling elements installed in a freely rolling manner in a load rolling path 24 constituted by a moving block 21 as a moving member having 22, a rolling element rolling surface 12 and a load rolling element rolling surface 22. And a ball 31.

  The track rail 11 is a long member having a substantially rectangular cross section, and a rolling element rolling surface 12 capable of receiving a plurality of balls 31 is formed along the longitudinal direction of the track rail 11 on the outer surface thereof. . In the case of the linear guide device 10 shown in FIG. 1, a total of four rolling element rolling surfaces 12 are formed on the track rail 11 over the entire length of the track rail 11. Furthermore, a plurality of bolt mounting holes 13 are formed in the track rail 11 at appropriate intervals in the longitudinal direction. The track rail 11 is fixed to a predetermined mounting surface, for example, the upper surface of a bed of a machine tool, by bolts (not shown) screwed into the bolt mounting holes 13. In addition, although the track rail 11 of illustration shows what was formed in linear form, the curved rail with a fixed curvature may be used.

  On the other hand, the moving block 21 includes a moving block main body portion 23 made of a high-strength material such as steel, and a pair of side lid bodies fixed to both ends of the moving block main body portion 23 with bolts (not shown). (It is not shown in FIG. 1 and is depicted in FIG. 1 with the side lid removed).

  The moving block body 23 is provided with four loaded rolling element rolling surfaces 22 that face the rolling element rolling surfaces 12 of the track rail 11. By combining the rolling element rolling surface 12 and the loaded rolling element rolling surface 22, four load rolling paths 24 are formed between the track rail 11 and the moving block 21. A plurality of female screw holes 25 (only two are drawn in FIG. 1) are formed on the upper surface of the moving block main body 21. By using these female screw holes 25, the moving block 21 is attached to a predetermined position. It is fixed to a surface, for example, a saddle of a machine tool or a lower surface of a table.

  The moving block body 23 is formed with a no-load rolling path 26 configured as a through hole substantially parallel to the four loaded rolling element rolling surfaces 22. Further, a pair of side lids (not shown) fixed to both ends of the moving block main body portion 23 are formed with four direction change paths each connecting the ends of the load rolling path 24 and the no-load rolling path 26. By attaching a side lid (not shown) to the moving block main body 23, these four direction change paths connect the load rolling path 24 and the no-load rolling path 26 to the four endless circulation paths. Form. Since the linear guide device 10 illustrated in FIG. 1 has the above-described configuration, the moving block 21 can freely reciprocate in the longitudinal direction (that is, the axial direction) of the track rail 11.

  In the general linear guide device 10 having the above-described configuration, for example, with respect to the moving block main body 23, a hole shape such as a no-load rolling path 26 extending in the longitudinal direction and a groove shape such as a loaded rolling element rolling surface 22. Alternatively, the cross-sectional shape needs to be formed as a gate shape from the necessity of being assembled across the track rail 11. In addition, these shapes require a very high dimensional accuracy because the guide motion needs to be performed with high accuracy. As for the moving block main body 23 as described above, a satisfactory one could not be manufactured by using a conventional ceramic manufacturing technique.

  Accordingly, the present invention is capable of manufacturing a member having a complicated shape and requiring high product dimensional accuracy, such as the moving block main body 23, with ceramics, and capable of manufacturing the ceramics with high accuracy and low cost. A preferred embodiment will be described below with reference to a flowchart. The following embodiments do not limit the invention according to each claim, and all combinations of features described in each embodiment are essential to the solution means of the invention. Not exclusively.

[First Embodiment]
FIG. 2 is a flowchart showing a method for manufacturing ceramics according to the first embodiment. In the ceramic manufacturing method according to the first embodiment, first, at least a ceramic raw material powder, a binder, water as a solvent, and a sintering aid are prepared, and a predetermined amount of binder, water, and After mixing the sintering aid, stirring is performed to prepare a ceramic raw material powder (preparation step: step S10).

As the ceramic raw material powder used in the first embodiment, sialon is assumed. For example, aluminum nitride (AlN), silicon carbide (SiC), silicon nitride (Si ₃ N ₄ ), sialon, boron nitride ( BN) and other non-oxide general-purpose ceramic raw materials, and oxide-based general-purpose ceramic raw materials such as alumina, zirconia, titania, mullite, beryllia, cordierite, zirconia, ferrite, etc. Can be used.

  In addition, when sialon is used for the ceramic raw material powder, it is possible to obtain ceramics composed of β sialon. β Sialon has significant performance such as light weight, high rigidity, and high corrosion resistance, and contributes to speeding up and high accuracy of guide movement when used as a component of operation guidance equipment. Therefore, it is preferable. In addition, β sialon is preferable in that it can withstand use in a special environment, such as enabling the use of a motion guide device in a vacuum environment.

About the sintering aid blended in the ceramic raw material powder, known and commonly used sintering aids such as yttrium oxide, magnesium oxide, aluminum oxide, cerium oxide, magnesium carbonate, calcium carbonate, or silicic acid, unsaturated polyester resin, Binders such as phenol resin, amino resin, epoxy resin, diallyl phthalate resin, thermosetting urethane resin or thermosetting acrylic resin, and electrical properties such as Li ₂ O, BaO, Ta ₂ O ₃ , Pt or Pd Various additives that change the color or colorants such as transition metal oxides can be added.

  Subsequently, the ceramic raw material powder prepared in the above preparation step (Step S10) is put into an extrusion molding machine, and the ceramic raw material powder that has been put into the ceramic dough is degassed and kneaded to perform extrusion molding. After performing, the shaping | molding process which shape | molds a elongate molded object by performing a drying process is implemented (step S11). The long molded body formed at this time is a semi-finished product formed with dimensional accuracy in consideration of shape deformation in a process to be performed later, and viewed in a cross section perpendicular to the longitudinal direction. The outer shape at this time is substantially the same as the cross-sectional shape of the moving block main body 23 shown in FIG.

  Furthermore, a portion corresponding to the no-load rolling path 26 of the moving block main body 23 is formed by drilling a long shaped body (step S12). For the removal process in this step, any known removal process technique can be used, for example, any drill process using a tool such as a drill or any other grinding process or cutting process using other tools. Techniques can be used.

  Next, a heat-resistant material is embedded in the long hole, which is the part to be removed of the long molded body formed by the hole punching process (step S13). This heat-resistant material is installed in order to obtain a no-load rolling path 26 with high dimensional accuracy by suppressing dimensional deformation of the long hole in a subsequent process, and has substantially the same dimensions as the shape of the no-load rolling path 26. It is formed. As the heat-resistant material embedded in step S13, for example, a carbon-based material C / C composite (carbon fiber reinforced carbon composite material), a ceramic porous material, or the like can be employed. These heat-resistant materials have a property that the coefficient of thermal expansion is smaller than that of the molded body. Since it has such properties, the heat-resistant material remains while maintaining the dimensional shape in the baking process (step S16) performed later, and is easily removed in the subsequent removal process (step S17). It is possible. In step S12 and step S13 described above, the heat-resistant material installation process in the first embodiment is completed.

  The long molded body in which the heat-resistant material is embedded as described above is cut to a desired length (step S14). This cut length has a dimension substantially corresponding to the length of the moving block main body 23, and the molding process of steps S11 to S14 is completed in this process, and a molded body having a desired semi-finished product shape. Is completed.

  A degreasing process is performed on the molded body completed by the molding process (steps S11 to S14) in a subsequent degreasing process (step S15). This degreasing treatment is performed at a maximum temperature of about 600 ° C., and is a treatment step performed to remove the binder that has maintained the shape of the molded body so far from the molded body. The reason why the binder is removed from the molded body in this degreasing process (step S15) is that the binder hinders the sinterability in the subsequent firing treatment, and the molding process (steps S11 to S14). This is because it is no longer necessary to maintain the shape-retaining property by the binder because the molded body at the stage where the above-mentioned method is carried out is sufficiently dried and its shape is stably maintained.

  Then, a baking process is implemented in a baking process, a molded object is baked and becomes ceramics (step S16). In this firing step, the thermal shrinkage of the molded body starts at about 1400 ° C., but the heat-resistant material embedded in the molded body has a melting point equal to or higher than the sintering temperature of about 1800 ° C. For this reason, the dimensional shape is maintained and remains unchanged during the firing process. Therefore, the molded body does not undergo an extreme dimensional change when fired into ceramics, and it is possible to obtain an unloaded rolling path 26 having a desired dimensional accuracy.

  In addition, since the heat-resistant material has a very low hardness compared to ceramics, metal materials, etc., the removal process (step S17) performed to remove the heat-resistant material is very easy and inexpensive. can do. Due to the presence of such a heat resistant material, an unloaded rolling path 26 having suitable dimensional accuracy and surface properties is formed. Incidentally, this removal step (step S17) is performed for the purpose of removing the heat-resistant material and beautifying the surface properties of the no-load rolling path 26, and is intended to ensure dimensional accuracy. is not. Therefore, since it does not involve advanced processing technology or processing cost, the above-described very inexpensive implementation is possible.

  Finally, a finishing process for finishing the moving block main body 23 is performed (step S18), and the moving block main body 23 is completed. Also in the finishing process performed in step S18, the ceramic has already been almost completed as the moving block main body 23 having high dimensional accuracy at this stage, so that the finishing process can be performed at low cost.

  The ceramic manufacturing method according to the first embodiment has been described above. However, the ceramic manufacturing method according to the first embodiment shown in FIG. 2 is a manufacturing method that takes into account the mass production of the moving block main body 23. Therefore, after embedding a heat-resistant material in a long molded body, it was cut to a desired length. However, the order of execution of the heat-resistant material installation process in these molding processes can be arbitrarily changed. For example, a long molded body is cut into a desired length and then removed, and then the heat-resistant material is placed. May be embedded and installed.

  In the ceramic manufacturing method according to the first embodiment, when a long shaped body is formed, extrusion using an extrusion molding machine is performed (step S11). The reason why such extrusion molding is adopted is that the moving block main body portion 23 to be manufactured has the same cross-sectional shape perpendicular to the axis in the longitudinal direction, and in order to mass-produce this, it is necessary to use extrusion molding. Because it was the most efficient. However, when manufacturing a product having a complicated shape or a single product, it is preferable to form the molded body by using, for example, CIP molding as shown in step S22 in FIG. 3 instead of extrusion molding.

  According to the technique called CIP molding (Cold Isostatic Pressing), the ceramic surface is uniformly compression-molded by receiving equal and uniform pressure, so that it has high dimensional accuracy. Can be obtained. In addition, when shape | molding a molded object using CIP shaping | molding, it is suitable to granulate the ceramic slurry obtained at the preparation process (step S20) as the pretreatment (step S21). . In addition, the ceramic slurry has improved fluidity by containing more water than kneaded clay. For the granulation process executed in step S21, it is possible to use a technique such as a known spray drying method. Further, the other steps (step S20, step S23 to step S29) in FIG. 3 are the same as the steps (step S10, step S12 to step S18) described in FIG.

[Second Embodiment]
FIG. 4 is a flowchart showing a method for manufacturing ceramics according to the second embodiment. What is characteristic of the ceramic manufacturing method according to the second embodiment is that the molding process and the heat-resistant material embedding installation described in the first embodiment are executed simultaneously. Hereinafter, the ceramic manufacturing method according to the second embodiment will be described in detail. In addition, description may be abbreviate | omitted about the process and process content which are the same or similar to 1st Embodiment mentioned above.

  In the ceramic manufacturing method according to the second embodiment, first, at least a ceramic raw material powder, a binder, water, and a sintering aid are prepared, and a predetermined amount of binder, water, and a sintering aid are prepared with respect to the ceramic raw material powder. After preparing the agent, stirring is performed, and a preparation process for obtaining a ceramic slurry is performed (step S30).

  Subsequently, granulation is performed on the ceramic slurry obtained in the preparation step (step S30) using a technique such as a spray drying method (step S31). The ceramic slurry granulated in step S31 is then put into a press molding machine (step S32). And the molded object is shape | molded by performing the press molding process using the press molding machine for the granulated ceramic slurry (step S32). However, in the press molding process in step S32, the heat-resistant material is also set in the press molding machine at the same time, and a molded body having the heat-resistant material is created in one process. That is, molding of the molded body in the molding process (steps S31 to S32) and embedding of the heat-resistant material in the heat-resistant material installation process (step S32) are performed simultaneously.

  In addition, the molded body molded at this time is a semi-finished product molded with dimensional accuracy in consideration of shape deformation in a process to be performed later, and the heat-resistant material installed inside the movable block main body portion 23 is an arrangement position substantially coinciding with the formation position of the no-load rolling path 26 in FIG. In this way, a molded body is completed.

  The molded body completed by the molding process (steps S31 to S32) is subjected to a degreasing process in the degreasing process, and is ready to be fired (step S33).

  Then, a baking process is implemented in a baking process and a molded object is baked to ceramics (step S34). In this firing step, since the heat-resistant material embedded in the molded body has a melting point equal to or higher than the sintering temperature, there is no change in the dimensional shape during sintering. In addition, since the melting point of the heat-resistant material is sufficiently higher than the thermal shrinkage start temperature of the molded body, the dimensional accuracy of the no-load rolling path 26 in the firing step (step S34) is stable due to the presence of the heat-resistant material. There is no extreme dimensional change when firing into ceramics, and it is possible to obtain an unloaded rolling path 26 having a desired dimensional accuracy.

  Then, the removal process (step S35) which removes a heat-resistant material is implemented, and the suitable surface property of the no-load rolling path 26 is ensured. In addition, this removal process (step S35) is made for the purpose of beautifying the surface properties of the no-load rolling path 26, and is not intended to ensure dimensional accuracy. Therefore, since it does not involve advanced processing techniques and processing costs, it can be implemented at a very low cost.

  Finally, a finishing process for finishing the moving block main body 23 is performed (step S36), and the moving block main body 23 is completed. Also in the finishing process performed in step S36, the ceramic is already almost completed as the moving block main body 23 having a high dimensional accuracy at this stage, so that the finishing process can be performed at low cost.

  Although the ceramic manufacturing method according to the second embodiment has been described, the preferred embodiment of the second embodiment shown in FIG. 4 is manufactured in comparison with the first embodiment described with reference to FIGS. There are few steps. In the case of the first embodiment described above, it was suitable for mass production of members having the same cross-sectional shape orthogonal to the longitudinal direction, but in the case of the second embodiment, a single product is manufactured. It is possible to use it suitably. In addition, the manufacturing cost can be reduced due to the small number of manufacturing steps.

  The preferred embodiments of the present invention have been described above. According to the present invention, it is possible to form a groove shape or a hole shape in ceramics without applying a large residual stress. Here, the residual stress can be evaluated by using a residual stress measurement method using X-rays such as an X-ray diffraction method (XRD).

  Further, depending on the application of ceramics, it is possible to eliminate the finishing process for the groove shape or hole shape formed by the removal process (step S17, step S28, step S35). In this case, the presence or absence of finishing can be distinguished by observing the microstructure of the groove-shaped or hole-shaped surface.

  The technical scope of the present invention is not limited to the scope described in the above embodiment. Various modifications or improvements can be added to the embodiment.

  For example, the ceramic manufacturing method according to the first and second embodiments described above relates to a method for obtaining a desired ceramic by embedding a heat-resistant material such as a carbon-based material in a molded body and performing degreasing and sintering. Met. However, the heat-resistant material applicable to the present invention is not limited to the above-described carbon-based material and ceramic porous material. As a material applicable to the heat-resistant material, any material having a melting point temperature of about 1400 ° C. or higher at which thermal contraction of the molded body starts is preferable, and more preferably about 1800 ° C. which is a temperature of the baking treatment. It is even better if it has the above melting point temperature. For example, it is preferable to use, as the heat-resistant material according to the present invention, a material that maintains its dimensional shape in the temperature range around 1400 ° C. and vaporizes and disappears in the temperature range around 1800 ° C. With such a material, it is possible to omit or simplify the removal process (step S17, step S28, step S35) to be performed later, leading to a reduction in manufacturing cost. Further, even a material having a melting point temperature of about 1800 ° C. or higher, which is the temperature of the baking treatment, can be easily removed in the removal step (step S17, step S28, step S35) to be performed thereafter, For example, a material that can be easily removed from a part to be removed of ceramics simply by applying a pressing force can be suitably used as a heat-resistant material according to the present invention even if the material has high hardness such as ceramics. .

  Moreover, in each embodiment mentioned above, the case where the moving block main-body part 23 which comprises the linear guide apparatus 10 is manufactured is demonstrated, and it demonstrates especially, and especially the longitudinal direction of the moving block main-body part 23 with the heat-resistant material embedded in a molded object. The case where the dimensional accuracy of the unloaded rolling path 26 extending in the direction is increased is illustrated. However, the scope of application of the present invention is not limited to the above-described ones. For example, for places where heat-resistant materials are installed, grooves such as a load rolling element rolling surface 22 and a surface facing the track rail 11 of the moving block main body 23 are provided. It can also be applied to manufacturing the shape and outline shape with high accuracy.

  Furthermore, the present invention is not limited to the moving block main body 23, and can be used when manufacturing other members constituting the linear guide device 10 such as the track rail 11 and components of all other mechanical devices. . Specifically, a ball screw device including a ball screw as a track member and a nut member as a moving member, a ball spline device including a spline shaft as a track member, and a spline outer cylinder as a moving member, etc. A member manufactured by the method for manufacturing a ceramic according to the present invention can be applied to the constituent members of the motion guide device. By applying the present invention, the motion guide device can obtain significant characteristics such as weight reduction and high accuracy.

  It is apparent from the description of the scope of claims that embodiments with such changes or improvements can be included in the technical scope of the present invention.

It is a longitudinal cross-sectional view for demonstrating schematic structure of the linear guide apparatus which can be manufactured with the manufacturing method of the ceramics which concern on this invention. It is a flowchart which shows the manufacturing method of the ceramics which concern on 1st Embodiment. It is a flowchart which shows an example among the various deformation | transformation forms of the manufacturing method of the ceramics which concern on 1st Embodiment. It is a flowchart which shows the manufacturing method of the ceramics concerning 2nd Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Linear guide apparatus, 11 Track rail, 12 Rolling body rolling surface, 13 Bolt mounting hole, 21 Moving block, 22 Load rolling body rolling surface, 23 Moving block main-body part, 24 Load rolling path, 25 Female screw hole, 26 None Load rolling road, 31 balls.

Claims (6)

A preparation step of preparing a ceramic raw material powder by blending a predetermined amount of a binder, a solvent, and a sintering aid;
A molding step of obtaining a molded body by subjecting the ceramic raw material powder to a molding process;
A degreasing step for degreasing the molded body;
A firing step of firing the molded body that has been subjected to the degreasing treatment;
A method for producing ceramics that performs a process including:
The molding step includes a heat-resistant material installation step of installing a heat-resistant material on the molded body,
A method for producing a ceramic, wherein the product shape of the ceramic is obtained by removing the heat-resistant material installed in the heat-resistant material installation step in a removal step performed after the firing step. In the manufacturing method of the ceramics according to claim 1,
The method for producing ceramics according to claim 1, wherein the heat-resistant material placed on the molded body in the heat-resistant material placing step is placed on a part to be removed of the molded body formed by a removal process. In the manufacturing method of the ceramics according to claim 1,
The method for producing ceramics, wherein the heat-resistant material installation step is performed simultaneously with the forming step. In the manufacturing method of ceramics given in any 1 paragraph of Claims 1-3,
A method for producing ceramics, characterized in that a coefficient of thermal expansion of the heat-resistant material is smaller than that of the ceramics. In the manufacturing method of ceramics given in any 1 paragraph of Claims 1-4,
The method for producing ceramics, wherein the heat-resistant material is made of a carbon-based material or a porous material. A track member having a rolling element rolling surface;
A moving member provided with a loaded rolling element rolling surface facing the rolling element rolling surface;
A plurality of rolling elements installed in a freely rolling manner in a load rolling path constituted by the rolling element rolling surface and the load rolling element rolling surface;
A moving guide device manufacturing method in which the moving member is reciprocally movable or freely rotatable in the axial direction or circumferential direction of the track member,
The track member or the moving member is
A preparation step of preparing a ceramic raw material powder by blending a predetermined amount of a binder, a solvent, and a sintering aid;
A molding step of obtaining a molded body by subjecting the ceramic raw material powder to a molding process;
A degreasing step for degreasing the molded body;
A firing step of firing the molded body that has been subjected to the degreasing treatment;
Is formed into a product shape by performing a process including:
The molding step includes a heat-resistant material installation step of installing a heat-resistant material on the molded body,
The method for manufacturing a motion guide device, wherein the heat-resistant material installed in the heat-resistant material installation step is removed in a removal step performed after the firing step.

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