JP2005161451A - Tool structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve processing accuracy to a workpiece, by improving straightness of an edge, in a long size tool structure having the edge such as an applying tool and a cutting tool. <P>SOLUTION: This long size tool structure 10 is formed by fixing a tool edge member 30 having the edge 31 composed of a material different in a linear expansion coefficient from a tool body 20, to the tool body 20 in the longitudinal direction of the tool body 20. A balance adjusting member 40 composed of a material having the same linear expansion coefficieint and modulus of longitudinal elasticity as the tool edge member 30, is fixed to the tool body 20 over the substantially same length as the tool edge member 30 in the longitudinal direction. The center of figure Gw of a cross-sectional figure of the balance adjusting member 40 and the tool edge member 30 generated when virtually cut in a cross section at a right angle to the longitudinal direction, is substantially aligned with the center of figure Gs of a cross-sectional figure of the tool body 20. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to long tool structures such as coating tools, cutting or breaking tools and the like.

Conventionally, there is a long coating tool as a representative of this type of tool structure. FIG. 12 is a perspective view of this type of application tool, and FIG. 13 is an enlarged view of a main part. This application tool (application head) (10) is a tool for applying a coating liquid on an object to be applied (60) traveling in one direction (A), and the traveling direction of the object to be coated (60) ( A) has at least two tool cutting edge members (30), which are sequentially arranged, and have tips (edges).

The tool blade tip member (30) tip portion (edge) has a tip surface (32) on the side facing the coated object (60), and two adjacent tool blade member members (30) tip portions (edges). Are provided with flat side surfaces (33) on opposite sides of each other and spaced apart from each other to form slots (50A, 50B) through which the coating liquid flows toward the coated object (60). The The coating liquid flows out from the outlet of the slot (50A, 50B) opened at the tip of the tool blade edge member (30), and is applied to the object to be coated (60). The A ridge line formed by intersecting the side surface (33) and the tip surface (32) of the tip portion (edge) of the tool blade tip member (30) serves as a blade tip (31), and the straightness of the blade tip (31). Is 3 μm or less.

The coating tool (coating head) (10) includes a tool body (edge body) (20) made of an iron-based alloy and the coating tool (coating head) (10) so as to be pressed against the object to be coated (60). Tool tip member (edge tip) (30) made of cemented carbide attached to the tip portion of the tool, and the linear expansion coefficient of the tool blade tip member (edge tip) (30) is 4.0 × 10 ^{−. 6} K ⁻¹ or more and 6.5 × 10 ⁻⁶ K ⁻¹ or less.

And this application | coating tool (application | coating head) (10) processes the said blade edge | tip (31) with the process precision that the straightness of a blade edge | tip (31) will be 3 micrometers. Thus, the flow rate of the coating liquid flowing out from the outlet of the slot (50A, 50B) varies depending on the location along the longitudinal direction of the blade edge (31), that is, the width direction of the object to be coated (60). Therefore, the film thickness of the thin layer formed on the coated object (60) can be made uniform along the width direction.

Further, by providing a tool cutting edge member (edge tip) (30) made of cemented carbide at the tip of the application tool (application head) (10), wear of the tip of the tool edge member (30) tip (edge) is provided. It is possible to uniformly apply the coating liquid while suppressing deformation and the like. Then, the linear expansion coefficient of the cemented carbide is set to 6.5 × 10 ⁻⁶ K ⁻¹ or less, so that the friction between the tool blade edge member (edge tip) (30), the object to be coated (60), and the coating liquid is achieved. Alternatively, the tool blade edge member (edge tip) (30) is suppressed from being deformed by heat generated by being stretched when the coating liquid is applied, and the tool blade edge member (30 while applying the coating liquid). ) Even when the temperature of the tip (edge) rises, the straightness of the cutting edge (31) is kept at 3 μm or less.

Further, the tool blade tip member (edge tip) (30) and the tool blade member (edge tip) (30) are attached by setting the linear expansion coefficient of the cemented carbide to 4.0 × 10 ⁻⁶ K ⁻¹ or more. Due to the difference in coefficient of linear expansion with the tool body (edge body) (20), the tool blade edge member (edge tip) (30) can be prevented from being distorted. The degree is kept at 3 μm or less. In this way, the coating liquid can be applied to the object to be coated (60) with a uniform thickness to form a thin layer. (For example, see Patent Document 1)

In addition, this type of long tool structure includes a long cutting tool used in a shearing machine, and a perspective view of this type of conventional cutting tool is illustrated in FIG. This cutting tool (10) has an object of improving the wear resistance, impact resistance, and corrosion resistance of the cutting edge (31) of the tool cutting edge member (30), extending the life of the cutting edge (31), and reducing the tool cost. It is a thing.

As shown in FIG. 14, a tool cutting edge member (30) made of cemented carbide is brazed and fixed to a tool main body (20) made of stainless steel over almost the entire length in the longitudinal direction of the tool main body. The main body (20) is configured such that the tool cutting edge member (30) is a pair of upper and lower sides. And this cutting tool (10) which has such a structure cuts the said longitudinal direction with the blade edge | tip (31) formed in the front-end | tip of the said tool blade edge | tip member (30). (For example, see Patent Document 2)

JP 2002-248404 A Japanese Utility Model Publication No. 58-177224

However, in the tool structure (10) such as the coating tool and the cutting tool described above, the temperature change occurred in the entire tool structure (10) due to the temperature change of the atmosphere around the tool structure (10). In this case, warpage deformation in the longitudinal direction of the tool structure (10) occurs due to the difference between the linear expansion coefficient and the longitudinal elastic modulus between the tool cutting edge member (30) and the tool body (20), and the tool structure ( 10) The straightness in the longitudinal direction of the cutting edge (31) is lowered. In this case, there is a concern that the machining accuracy of the workpiece (60) by the cutting edge (31) may be lowered.

The present invention has been made in view of the above circumstances, and an object of the present invention is to suppress warpage deformation in the longitudinal direction of the cutting edge in a long tool structure such as a coating tool or a cutting tool. An object of the present invention is to provide a tool structure in which the straightness of the workpiece is improved and the machining accuracy of the workpiece is improved.

In the long tool structure in which a tool cutting edge member provided with a cutting edge is fixed to a tool main body such as the application tool and the cutting tool described above along the longitudinal direction of the tool main body, the tool cutting edge By reducing warpage deformation in the longitudinal direction of the member and improving the straightness of the cutting edge in the longitudinal direction, the processing accuracy of the workpiece is improved, and further, the tool body is linearly expanded with the tool body. In the tool structure in which the tool blade member formed separately from a material having a different rate is fixed along the longitudinal direction, the tool blade member is made of a material having the same linear expansion coefficient and longitudinal elastic modulus as the tool blade member. The balance adjusting member is fixed to the tool body over the substantially same length as the tool cutting edge member in the longitudinal direction, and is further generated when the balance adjusting member is virtually cut in a cross section perpendicular to the longitudinal direction. By setting the cross-sectional shape and arrangement of the balance adjusting member so that the centroids of the cross-sectional shapes of the lance adjusting member and the tool cutting edge member substantially coincide with the centroids of the cross-sectional shape of the tool body, the tool The structure obtained the knowledge that the warpage deformation in the longitudinal direction due to the difference in linear expansion coefficient and longitudinal elastic modulus between the tool cutting edge member and the balance adjusting member and the tool main body can be reduced, leading to the present invention. It was.

That is, the present invention provides at least one long tool cutting edge member provided with a cutting edge for processing a workpiece made of a material having a linear expansion coefficient different from that of the tool main body on a long tool main body, In the long tool structure which protrudes from the outer peripheral surface in the cross section perpendicular to the longitudinal direction of the tool body and is fixed to the tool body over the same length as the tool body along the longitudinal direction, the tool A balance adjusting member made of a material having the same linear expansion coefficient and longitudinal elastic modulus as the cutting edge member is fixed to the tool main body over the same length as the tool cutting edge member in the longitudinal direction, and in a cross section perpendicular to the longitudinal direction. The centroid (Gw) of the cross-sectional figure of the balance adjusting member and the tool cutting edge member generated when virtually cutting is substantially the same as the centroid (Gs) of the cross-sectional figure of the tool body. Characterized in that it was tightening.

In the tool structure of the present invention, the tool cutting edge member and the balance adjusting member are made of a material having the same linear expansion coefficient and longitudinal elastic modulus, and are virtually cut by a cross section perpendicular to the longitudinal direction of the tool structure. The position of the centroid (Gw) of the cross-sectional figure of the tool cutting edge member and the balance adjustment member generated when the tool is substantially aligned with the position of the centroid (Gs) of the cross-sectional figure of the tool body, and further in the longitudinal direction The balance adjusting member is fixed to the tool main body over substantially the same length as the tool cutting edge member, so that a difference in linear expansion coefficient and longitudinal elastic modulus between the tool cutting edge member and the balance adjusting member and the tool main body is obtained. Sled deformation due to is suppressed. Therefore, the warpage deformation in the longitudinal direction caused by the temperature change of the tool structure is greatly reduced, and the straightness in the longitudinal direction of the cutting edge provided in the tool cutting edge member is greatly improved. The machining accuracy is greatly improved. The straightness of the cutting edge referred to here is a straightness tolerance of a line defined in JIS B 0021.

In the tool structure of the present invention, the tool blade member and the balance adjusting member are made of the same material. In this case, warpage deformation in the longitudinal direction due to the difference in linear expansion coefficient and longitudinal elastic modulus between the tool main body, the tool blade edge member and the balance adjusting member is greatly suppressed, and the tool blade edge member is provided. Since the straightness of the cutting edge in the longitudinal direction is greatly improved, the machining accuracy of the workpiece is greatly improved. In addition, when the processing accuracy of the object to be processed is required to be 15 μm or less, the straightness of the cutting edge is preferably 10 μm or less, and when the processing accuracy is 8 μm or less, it is preferably 5 μm or less. Preferably, when the processing accuracy is 5 μm or less, it is preferably 3 μm or less.

In the tool structure of the present invention, the tool cutting edge member and the balance adjusting member are made of a material having higher hardness than the tool body. In this case, the cutting edge of the tool cutting edge member has improved wear resistance, and the straightness in the longitudinal direction of the cutting edge is maintained with high accuracy. Can be maintained.

In the tool structure of the present invention, the tool cutting edge member and the balance adjusting member are made of any one of hard materials such as cemented carbide, cermet, and ceramics. In this case, since the cutting edge of the tool cutting edge member is improved in wear resistance and toughness and strength, the straightness in the longitudinal direction of the cutting edge is hardly deteriorated. Therefore, it is possible to maintain the processing accuracy of the workpiece by the cutting edge with high accuracy.

In the tool structure of the present invention, the tool body is made of an iron-based alloy. Examples of the iron-based alloy include carbon steel, alloy steel, and stainless steel. In this case, the tool body can be easily machined, the cost of the material can be reduced, and the economy can be improved.

In the tool structure of the present invention, at least one of the tool blade member and the balance adjusting member is brazed and fixed to the tool body. In this case, the tool cutting edge member and the balance adjusting member formed separately from the tool body can be firmly fixed to the tool body.

In the tool structure according to the present invention, at least one of a tool blade member and a balance adjusting member is detachably fixed to the tool body. In this case, when the straightness of the cutting edge of the tool cutting edge member deteriorates, the straightness of the cutting edge can be easily improved by replacing the tool cutting edge member. In addition, it is easy to change the material of the tool cutting edge member and the balance adjusting member.

In the tool structure of the present invention, the ratio (L1 / L2) between the length (L1) in the longitudinal direction of the tool structure and the length (L2) on the longitudinal side in the cross section perpendicular to the longitudinal direction is 1 or more. It is characterized by being. In such a case, it becomes effective to suppress warpage deformation in the longitudinal direction of the conventional tool structure of this type.

Next, an embodiment to which the tool structure of the present invention is applied will be described with reference to the drawings.

First, in Example 1, the tool structure of the present invention is applied to a long coating tool. A perspective view of the application tool of Example 1 is illustrated in FIG. This coating tool is a coating tool called a die, die block, or slot die, and a coating device (die coater) on which the coating tool is installed is a coating device, an audio device, a video device, a computer for coating a liquid crystal panel or the like. Coating device for making a magnetic recording medium in which the surface of an object to be coated such as film, disk, sheet, tape, drum, etc. used for magnetic recording attached to the device is coated, or fax paper, copy It is a coating device for coating the surface of an object to be coated such as paper or photographic film, and is not particularly limited as long as it is a device to which a coating solution is coated.

As shown in FIG. 1, the coating apparatus includes a pair of coating tools (10). In each application tool (10), a tool blade member (30) having a blade edge (31) on the side facing the object to be coated (60) (upper side in FIG. 1) is used as the tool body (20). It is formed so as to partially protrude from the outer peripheral surface. The coating tool (10) has a length (L1) in the longitudinal direction that is longer than the length (L2) on the longitudinal side of the cross-sectional shape perpendicular to the longitudinal direction. The lengths (L1, L2) are set to 1000 mm and 200 mm, respectively. And this coating device is provided with the feed means (not shown) which sends the said to-be-coated object (60) relatively to an arrow direction (F) with respect to the said tool blade member (30).

A pair of the coating tools (10) facing each other are installed in the coating device so that the tool blade members are adjacent to each other along the feed direction (F) of the coated object (60). Each of the application tools (10) includes a tool body (20) and a tool cutting edge member (30) formed separately from the tool body (20) in the longitudinal direction of the tool body (20). And fixed to the tool body (20) over substantially the entire length. In the present embodiment, as shown in the enlarged view of the main part of FIG. 2, a member (70A) in which a female thread is formed is fitted to the tool cutting edge member (30), and engaged with the tool body (20) and By screwing a screw member (70B) to be screwed into the female screw, the tool cutting edge member (30) is pulled and fixed to the tool body (20) side together with the member (70A).

The tool cutting edge member (30) is made of a hard material such as cemented carbide, while the tool body (20) is made of an iron-based alloy such as carbon steel or alloy steel. The tool edge member (30) is not limited to cemented carbide, and may be selected from known hard materials with high wear resistance such as cermet and ceramics. Further, the tool blade edge member (30) is fixed to the tool body (20) in addition to the screw member described above, and the tool blade edge member (30) such as a wedge member and a pressing piece is detachably fixed. It can be appropriately selected from publicly known means such as ones or brazing.

The tip part of the tool blade member (30) close to the object to be coated (60) has a tip surface (32) on the side facing the object to be coated (60). Flat side surfaces (33) are provided on the sides of the two adjacent tool blade edge members (30) facing each other, and these side surfaces (33) are arranged apart from each other so that the coating liquid can be applied. A slot (50) for flowing out and applying toward the object (60) is formed over substantially the entire length of the application tool (10). The first embodiment is provided in the coating apparatus so as to form only one slot (50), but the number of the slots (50) is not limited to one, and two or more slots (50) are formed. It may be provided as follows. When two or more slots (50) are formed, the coating tool (10) is composed of three or more.

The cutting edge (31) of the tool cutting edge member (30) is formed on the ridge line on the front side and / or the ridge line on the rear side in the feed direction (F) of the coated object (60) on the tip surface (32). . The straightness in the longitudinal direction of the cutting edge (31) varies depending on the width in the longitudinal direction of the object to be coated (60) and the desired thickness of the coating solution. For example, a thin layer having a thickness of 15 μm or less is used. For example, when it is desired to obtain a thin layer having a thickness of 8 μm or less, it is preferably 5 μm or less. For example, when a thin layer having a thickness of 5 μm or less is desired. Is preferably 3 μm or less.

The tool main body (20) has a balance adjusting member (40) made of a material having the same linear expansion coefficient and longitudinal elastic modulus as the tool cutting edge member (30) along the longitudinal direction of the tool main body (20). It is fixed to the tool body (20) over substantially the same length as the tool cutting edge member (30), preferably over the same length. The balance adjusting member (40) is preferably made of the same material as the tool cutting edge member (30) in that the linear expansion coefficient and the longitudinal elastic modulus completely coincide with each other. Further, the means for fixing the balance adjusting member (40) to the tool body (20) can be appropriately selected from those mentioned above as the means for fixing the tool blade member (30).

Further, in the application tool (10), as shown in the cross-sectional view perpendicular to the longitudinal direction of the application tool in FIG. 30) and the cross section generated when the position of the centroid (Gw) of the cross-sectional figure of the balance adjusting member (40) is virtually cut at a cross section perpendicular to the longitudinal direction of the tool body (20). The position of the centroid (Gs) of the figure is substantially matched. The shape and arrangement of the cross-sectional figure of the balance adjusting member (40) are not limited as long as the centroids (Gw, Gs) substantially match as described above. The cross-sectional figure may be appropriately selected from a polygon, a circle, an oval, a free curve, and the like. In the arrangement, as long as the balance adjusting member (30) can be fixed to the tool body (20). Good.

Next, the effect of the coating tool (10) of Example 1 having the above-described configuration will be described. As described above, in the application tool (10), the balance adjusting member (40) is made of a material having the same linear expansion coefficient as that of the tool cutting edge member (30), and further, in the longitudinal direction of the application tool (10). The position of the centroid (Gw) of the cross-sectional figure of the tool cutting edge member (30) and the balance adjusting member (40) generated when virtually cutting with a right-angled cross section is set to the position of the tool body (20). It is made to substantially coincide with the position of the centroid (Gs) of the cross-sectional figure generated when virtually cut in a cross section perpendicular to the longitudinal direction, and further, in the longitudinal direction, the balance adjusting member (40) is moved to the tool cutting edge member. The tool cutting edge member (30), the balance adjusting member (40), and the tool body (20) are fixed to the tool body (10) over substantially the same length, preferably the same length as (30). Linear expansion with Wherein due to the difference in the rate and modulus longitudinal warpage deformation is suppressed. Therefore, the warpage deformation in the longitudinal direction caused by the temperature change of the coating tool (10) is greatly reduced, and the straightness in the longitudinal direction of the cutting edge (31) provided in the tool cutting edge member (30) is improved. Therefore, the coating liquid having a uniform thickness can be applied to the object to be coated (60) over the longitudinal direction.

Ideally, the centroid (Gw) of the cross-sectional figure of the tool cutting edge member (30) and the balance adjusting member (40) and the position of the centroid (Gs) of the cross-sectional figure of the tool body are perfectly identical. It is good to do. However, when it is difficult to completely match the positions of the centroids (Gw, Gs) in all the cross sections, the distance (shift) (Δg) between the two centroids (Gw, Gs) in the cross sections. However, the distance (deviation) (Δg) is preferably suppressed to 10% or less of the longitudinal dimension (L2) of the coating tool (10) in the cross section. If it does so, said effect can be acquired with respect to the conventional coating tool which does not have a balance adjustment member. Needless to say, the distance (deviation) (Δg) is preferably as small as 7% and 5% of the longitudinal dimension (L2) of the coating tool (10) in the cross section.

Since the tool cutting edge member (30) is made of a hard material such as cemented carbide, cermet, ceramics, etc., the wear resistance, toughness and strength of the cutting edge (31) of the tool cutting edge member (30) can be improved. The straightness in the longitudinal direction of the cutting edge (31) is less likely to deteriorate. Therefore, the uniformity of the thickness of the coating liquid applied over the longitudinal direction of the coated object (60) can be maintained for a long time.

In addition, since the tool body is made of an iron-based alloy such as carbon steel or alloy steel, the machining of the tool body (20) is facilitated, the material cost can be reduced, and the economy is improved.

Moreover, since the tool blade edge member (30) is detachably fixed to the tool body (20), when the straightness of the blade edge (31) of the tool blade edge member (30) is deteriorated, the tool blade edge member (30 ) Can be easily improved in straightness of the cutting edge (31). On the other hand, when the balance adjustment member (40) is detachably fixed to the tool body (20), the balance adjustment member (40) can change the linear expansion coefficient (material) and the cross-sectional shape as appropriate, The position (Gw) of the centroid with respect to the tool cutting edge member (30) can be adjusted. Moreover, the material change of a tool blade edge member (30) and a balance adjustment member (40) also becomes easy.

The warpage deformation in the longitudinal direction of the cutting edge (31) due to the temperature change described above was compared between the coating tool (10) of Example 1 and the comparative example. In the application tool (10) of Example 1, the tool body (20) is made of alloy steel SUS420 (JIS), and the tool edge member (30) and the balance adjusting member (40) are made of cemented carbide. And in the XYZ orthogonal coordinate in the longitudinal cross section of FIG. 3, the centroid (Gs) of the cross-sectional figure of the said tool main body (20) is a coordinate (Gxs, Gys), a tool blade member (30), and a balance adjustment member (40). ) Is in the coordinates (Gxw, Gyw), and the distance (shift) (Δg) between the centroids (Gw, Gs) of the cross-sectional figures of the coating tool (10) is It is suppressed to about 0.3% with respect to the longitudinal dimension (L2) in the cross-sectional shape. Furthermore, in the longitudinal direction, the balance adjusting member (40) is fixed to the tool body (20) over the same length as the tool cutting edge member (30).

On the other hand, the coating tool (10) of the comparative example has the same material as that of the coating tool (10) of the first embodiment as the material constituting the tool body (20) and the tool blade member (30), and is a cross section perpendicular to the longitudinal direction shown in FIG. In the shape, the cross-sectional figure and arrangement of the tool cutting edge member (30) are the same as those in the first embodiment, and the balance adjusting member (40) is eliminated. Then, in the XYZ orthogonal coordinates shown in FIG. 4, the coordinates (Gxs, Gys) of the centroid (Gs) of the sectional figure of the tool main body (20) and the centroid (Gw) of the sectional figure of the tool cutting edge member (30). The distance (shift) (Δg) between the centroids and the coordinates (Gxw, Gyw) of the coating tool (10) is about 53% with respect to the longitudinal dimension (L2) in the cross-sectional shape of the coating tool (10).

In the coating tool (10) of Example 1 and the comparative example, warping deformation in the longitudinal direction of the blade edge (31) when the temperature of the coating tool (10) was lowered by 1 ° C. was analyzed by a finite element method. Table 1 shows the material, linear expansion coefficient, and longitudinal elastic modulus that constitute each member of the tool body (20), the tool cutting edge member (30), and the balance adjusting member (40), which were used for the analysis conditions of the finite element method. .

Table 1

FIG. 5 and FIG. 6 are graphs showing the relationship between the longitudinal dimension (Z-axis coordinate) of the cutting edge (31) of the coating tool (10) measured by the finite element method and the amount of warp deformation (dx, dy). Shown in FIG. 5 shows the amount of warpage deformation (dx) in the X-axis direction, and FIG. 6 shows the amount of warpage deformation (dy) in the Y-axis direction. As can be seen from FIGS. 5 and 6, in the coating tool (10) of Example 1, the warp deformation amount (dx, dy) in the X-axis direction and the Y-axis direction is 0.4 μm or less over the entire length of the cutting edge (31). I was suppressed. On the other hand, in the coating tool (10) of the comparative example, the warpage deformation (dx) in the X-axis direction is about 2.3 μm, and the warpage deformation (dy) in the Y-axis direction is about 1.9 μm. It was much larger than (10).

In the coating tool (10) of Example 1, the ratio (L1 / L2) of the length (L1) in the longitudinal direction of the cutting edge to the length (L2) on the long side in the cross section perpendicular to the longitudinal direction is 1 or more. In terms of the length in the longitudinal direction of (31), if it is 200 mm or more, it can be seen that it is more effective in suppressing warpage deformation than the coating tool of the comparative example.

Next, Example 2 will be described with reference to the drawings. Like Example 1, Example 2 also applies the tool structure of the present invention to a coating tool. A coating apparatus provided with Example 2 is illustrated in FIG. In this coating apparatus, the coating tool (10) of Example 2 is fixed above a rotatable roll (80) that transports an object to be coated (60) in a transport direction (F) indicated by an arrow. The coating tool (10) is supplied with a coating liquid from a coater dam (90) provided on the rear side in the transport direction (F) to the cutting edge (31), and applies the coating liquid to the object to be coated (60). To do. As shown in FIG. 7, the coating tool (10) has a substantially cylindrical shape, and a cutting edge (31) for coating the coating liquid is provided on the outer peripheral surface thereof, and a tool body ( 20) over almost the entire length.

A more detailed shape of the application tool (10) is shown in FIGS. 8A is a front view of the coating tool 10, FIG. 8B is a side view, FIG. 8C is a view taken in the direction of arrow A in FIG. 8A, and FIG. It is principal part detailed sectional drawing of A arrow in (a). As shown in FIGS. 8 (c) and 8 (d), the coating tool (10) has a substantially cylindrical tool body (20) and a length formed separately from the tool body (20). A tool cutting edge member (30) having a scale, and a fixing means for fixing the tool cutting edge member (30) to the tool body (20). The application tool (10) of this embodiment is a long application tool (10) in which, for example, the total length (L1) is set to 1600 mm and the outer diameter (L2) of the tool blade tip member (30) is set to 160 mm.

The tool body (20) is formed integrally with a central large diameter portion (20A) made of, for example, an iron-based alloy such as carbon steel or alloy steel, and both end shaft portions (20B). The tool cutting edge member (30) is made of a hard material such as cemented carbide having a hardness higher than that of the tool body (20), for example, and has a substantially rectangular shape in a cross section perpendicular to the longitudinal direction of the coating tool (10). The tool body (20) is fixed to a mounting groove (22) provided on the outer peripheral portion of the central large diameter portion (20A). At this time, in the cross section, the tool cutting edge member (30) is formed with an arc whose outer peripheral surface is centered on the axis (P), and the central large diameter portion (20A) of the tool body (20). It protrudes slightly from the outer peripheral surface, and further, in the longitudinal direction, is formed to have substantially the same length as the central large diameter portion (20A) along the axis (O) of the coating tool (10). The tool cutting edge member (30) is fixed to the tool body (20) by the same fixing means as in the first embodiment. That is, by fitting a member (70A) in which a female screw is formed on the tool blade member (30), and screwing a screw member (70B) that engages with the tool main body (20) and is screwed into the female screw, The tool cutting edge member (30) is pulled and fixed to the tool body (20) side together with the member (70A).

Further, the tool blade edge member (30) is made of a material having the same linear expansion coefficient and longitudinal elastic modulus as the balance adjustment member (40), with the axis (O) of the application tool (10) as a reference. It is fixed to the central large diameter portion (20A) of the tool body (20) at substantially the same length at a position that is substantially symmetrical with respect to (30). The means for fixing the balance adjusting member (40) to the central large diameter portion (20A) is the same as the means for fixing the tool blade member (30) described above. Furthermore, the cross-sectional figure of the tool cutting edge member (30) generated when virtually cut in a cross section perpendicular to the longitudinal direction and the cross-sectional figure of the balance adjusting member (40) are substantially coincident with each other. It is formed. Furthermore, the balance adjusting member (40) is made of the same material as the tool cutting edge member (30). By setting it as such a structure, the position of the centroid (Gw) of the said cross-section figure of the said tool blade edge member (30) and the said balance adjustment member (40) is the centroid of the cross-section figure of a tool main body (20). It can be made to substantially coincide with the position of (Gs). In addition, the centroid (Gw) of the cross-sectional figure of the said tool blade edge member (30) produced | generated when cut virtually by the cross section orthogonal to the longitudinal direction of this application tool (10) and the said balance adjustment member (40) ) And the position of the centroid (Gs) of the cross-sectional figure generated when virtually cutting the cross section perpendicular to the longitudinal direction of the tool body (20) Even when the member (30) and the balance adjusting member (40) are arranged at asymmetric positions with respect to the axis (O) of the coating tool (10), or the cross-sectional figures are different, the tool cutting edge member ( 30) and the position of the centroid (Gw) of the cross-sectional figure of the balance adjusting member (40) only need to substantially coincide with the position of the centroid (Gs) of the cross-sectional figure of the tool body (20). Ideally, the positions of the centroids (Gw, Gs) should be perfectly matched, but it is difficult to perfectly match the positions of the centroids (Gw, Gs) in all cross sections. Is preferably set such that the distance (shift) (Δg) between the centroids (Gw, Gs) in the cross section is 10% or less of the longitudinal dimension (L2) of the coating tool (10) in the cross section, It is more preferably 7% or less, and particularly preferably 5% or less.

The effect of the coating tool (10) of Example 2 having such a configuration will be described below. As described above, in this application tool (10), the balance adjusting member (40) is made of a material having the same linear expansion coefficient and longitudinal elastic modulus as the tool cutting edge member (30), and the application tool (10). The position of the centroid (Gw) of the cross-sectional figure of the tool cutting edge member (30) and the balance adjusting member (40) generated when virtually cut in a cross section perpendicular to the longitudinal direction of the tool body ( 20) is substantially aligned with the position of the centroid (Gs) of the cross-sectional figure, and further, in the longitudinal direction, the balance adjusting member (40) extends over the same length as the tool cutting edge member (30). 10), the application tool (10) has a difference in linear expansion coefficient and longitudinal elastic modulus between the tool cutting edge member (30) and the balance adjusting member (40) and the tool body (20). By said length It is suppressed the direction of warpage. Therefore, the warpage deformation in the longitudinal direction caused by the temperature change of the coating tool (10) is greatly reduced, and the straightness in the longitudinal direction of the cutting edge (31) provided in the tool cutting edge member (30) is improved. Therefore, the coating liquid having a uniform thickness can be applied to the object to be coated (60) over the longitudinal direction.

Further, the following effects can be obtained as secondary effects. The balance adjusting member (40) is substantially the same at a position substantially symmetrical with respect to the tool cutting edge member (30) with respect to the axis (O) of the coating tool (10) in a cross section perpendicular to the longitudinal direction. When the tool cutting edge member (30) reaches the end of its life due to wear or the like of the cutting edge (31), the coating tool (10) is rotated around the axis (O) by a predetermined angle. Thereby, the said balance adjustment member (40) can be used as a tool blade edge member (30). Therefore, when changing the tool blade edge member (30), no setup change is required, and the blade edge (31) can be replaced quickly. Moreover, after the blade tip (31) is replaced, the warp deformation in the longitudinal direction of the blade tip (31) is suppressed, the straightness is kept good, and the coating liquid having a uniform thickness is applied to the object to be coated (60). Can do.

The material constituting the tool cutting edge member (30), the balance adjusting member (40), the tool main body (20), or the number, the cross-sectional shape, the arrangement of the balance adjusting member, or the tool cutting edge member (30) and the balance adjusting member The means for fixing (40) to the tool body (20) is not limited to the above-described configuration, and can be changed without departing from the gist of the present invention.

Next, Example 3 will be described with reference to the drawings. In Example 3, the tool structure of the present invention is applied to a cutting tool. A perspective view of the cutting tool of this embodiment is shown in FIG. As shown in this figure, this cutting tool (10) is composed of a pair of upper and lower long cutting tools (10) having the same or different shapes, and the cutting edge (31) of these cutting tools (10) is made of metal, non-ferrous metal. A cutting tool (10) for cutting an object to be cut (60) such as a metal, non-metal film, disk, sheet or tape into a predetermined dimension.

In the cutting tool (10) of Example 3, the tool cutting edge member (30) made of a hard material such as cemented carbide is fixed to a long tool body (20) made of an iron-based alloy such as alloy steel or carbon steel. Is. The tool cutting edge member (30) is fixed to the tool body (20) by brazing over the entire length in the longitudinal direction of the tool body (20) at the tip in the cutting direction (C) indicated by the arrow in FIG. The The fixing means is not limited to brazing, and known means may be used. Then, a cutting edge (31) is formed at the intersecting ridge line portion of the tip surface (32) facing the front in the cutting direction (C) of the tool cutting edge member (30) and the side surface (33) facing the side.

The tool main body (20) has a balance adjusting member (40) having substantially the same linear expansion coefficient and longitudinal elastic modulus as the tool cutting edge member (30) along the longitudinal direction of the tool main body (20). The tool body (20) is fixed over the same length as the cutting edge member (30). The balance adjusting member (40) is preferably made of the same material as the tool cutting edge member (30) in that the linear expansion coefficient and the longitudinal elastic modulus completely coincide with each other. Further, the means for fixing the balance adjusting member (40) to the tool body (20) can be appropriately selected from fixing members such as a screw member, a wedge member and a pressing piece, or brazing.

Furthermore, in the cutting tool (10), as shown in the cross-sectional view perpendicular to the longitudinal direction of the cutting tool in FIG. 10, the tool cutting edge member ( 30) and the position of the centroid (Gs) of the cross-sectional figure of the tool main body (20) and the position of the centroid (Gs) of the cross-sectional figure of the tool body (20). Ideally, the position of the centroid (Gw) of the tool cutting edge member (30) and the balance adjusting member (40) and the position of the centroid (Gs) of the tool main body (20) are complete. It is good to match. However, when it is difficult to completely match the positions of the centroids (Gw, Gs) in all the cross sections, the distance (shift) (Δg) between the centroids (Gw, Gs) in the cross sections. Is preferably 10% or less of the longitudinal dimension (L2) of the cutting tool (10) in the cross section, more preferably 7% or less, and particularly preferably 5% or less. In addition, as for the shape and arrangement | positioning of the said cross-sectional figure of the said balance adjustment member (40) in the longitudinal direction cross section of this tool main body (10), each centroid (Gw, Gs) substantially corresponds as mentioned above. If it meets, there is no limitation.

The effect of the cutting tool (10) of Example 3 having such a configuration will be described below. As described above, in this cutting tool (10), the balance adjusting member (40) is made of a material having the same linear expansion coefficient and longitudinal elastic modulus as the tool cutting edge member (30), and the cutting tool (10). The position of the centroid (Gw) of the cross-sectional figure of the tool cutting edge member (30) and the balance adjusting member (40) generated when virtually cut in a cross section perpendicular to the longitudinal direction of the tool body, The position of the centroid (Gs) of the cross-sectional figure is made to substantially coincide, and further, in the longitudinal direction, the balance adjusting member (40) is placed on the tool main body (10) over substantially the same length as the tool cutting edge member (30). By being fixed, the cutting tool (10) has the longitudinal direction due to the difference in linear expansion coefficient and longitudinal elastic modulus between the tool cutting edge member (30) and the balance adjusting member (40) and the tool body (20). Direction Ri is suppressed deformation. Therefore, the warpage deformation in the longitudinal direction caused by the temperature change of the cutting tool (10) is greatly reduced, and the straightness in the longitudinal direction of the cutting edge (31) provided in the tool cutting edge member (30) is improved. Therefore, the dimensional variation when the object to be cut (60) is cut is greatly improved.

Next, Example 4 will be described with reference to FIG. Example 4 is a long breaking tool of a type that breaks the object to be broken (60) while being paired with the breaking device and rotating relative to each other. FIG. As shown in this figure, the breaking tool (10) is placed on the outer periphery of a substantially cylindrical tool body (20) arranged in a pair of upper and lower sides so as to sandwich the breaking object (60). A long tool cutting edge member (30) for breaking the tool body (20) is fixed along the axis (O) direction of the tool body (20). The breaking tools (10) arranged in a pair are rotated in the opposite directions at the same rotational speed, and the fracture target is given a predetermined feed speed in the feed direction (F) corresponding to the rotational speed. The object (60) is broken to a predetermined dimension by the cutting edge (31) provided at the tip of each of the breaking tools (10). (State shown in FIG. 11)

As shown in FIG. 11, the breaking tool (10) is a long tool cutting edge member formed separately from the tool body (20) on the outer periphery of the tool body (20) having a substantially cylindrical shape. (30) is fixed by brazing or the like. Here, the tool main body (20) is made of an iron-based alloy such as carbon steel or alloy steel, and the tool cutting edge member (30) is higher in hardness than the tool main body (20) and has a linear expansion coefficient. Composed of different materials. The material is preferably composed of, for example, cemented carbide, cermet, ceramics or the like.

Further, a balance adjusting member (40) made of a material having the same linear expansion coefficient and longitudinal elastic modulus as the tool cutting edge member (30) is provided in the tool body (30) over the same range as the tool cutting edge member (30) in the longitudinal direction. For example, it is fixed to 20) by brazing or the like. Furthermore, the position of the centroid (Gw) of the cross-sectional figure of the tool cutting edge member (30) and the balance adjusting member (40) generated when virtually cut in a cross section perpendicular to the longitudinal direction is the tool body. The balance adjusting member (40) is appropriately set in the shape, arrangement, number, etc. of the cross-sectional graphic so as to substantially coincide with the position of the centroid (Gs) of the cross-sectional graphic of (20).

About the effect of the fracture | rupture tool (10) of Example 4 which has such a structure, it is the same as that of Examples 1-3 mentioned above. That is, the breaking tool (10) is warped in the longitudinal direction due to a difference in linear expansion coefficient and longitudinal elastic modulus between the tool cutting edge member (30) and the balance adjusting member (40) and the tool body (20). Deformation can be suppressed. Therefore, the warpage deformation in the longitudinal direction caused by the temperature change of the breaking tool (10) is greatly reduced, and the straightness in the longitudinal direction of the cutting edge (31) provided in the tool cutting edge member (30) is improved. Therefore, the dimensional variation of the fractured object (60) to be broken is greatly improved.

Further, as a secondary effect, if the same cutting edge (31) as the tool cutting edge member (30) is formed on the balance adjusting member (40) provided at least one or more, the breaking tool (10) has a plurality of cutting edges. (31) is provided, the breaking process per rotation of the breaking tool (10) is increased, and the efficiency is improved.

In addition, although the application tool (10), the cutting tool (10), and the fracture | rupture tool (10) were illustrated as an Example which applied the tool structure of this invention, the tool form which applied this tool structure (10) is these. However, the present invention can be applied to various long tool structures such as a roll material as long as it does not deviate from the gist thereof.

It is a perspective view of the coating tool of Example 1 which concerns on this invention. It is a longitudinal cross-sectional view of the principal part of the coating tool shown in FIG. It is a longitudinal cross-sectional view of the coating tool of Example 1 in the longitudinal direction. It is a longitudinal cross-sectional view of the coating tool of a comparative example in the longitudinal direction. It is a graph which shows the relationship between the position of the longitudinal direction of the coating tool of Example 1 and a comparative example, and the curvature deformation amount of the X-axis direction of a blade edge | tip. It is a graph which shows the relationship between the position of the longitudinal direction of the coating tool of Example 1 and a comparative example, and the curvature deformation amount of the Y-axis direction of a blade edge | tip. It is the schematic of the coating device using the coating tool of Example 2 which concerns on this invention. FIG. 8 is a detailed view of the application tool shown in FIG. 7, wherein (a) is a front view, (b) is a side view, (c) is a view taken in the direction of arrow A, and (d) is a cross-sectional view of the main part in the view of arrow A. It is a perspective view of the cutting tool of Example 3 which concerns on this invention. FIG. 10 is a cross-sectional view perpendicular to the longitudinal direction of the cutting tool shown in FIG. 9. It is a perspective view of the breaking tool of Example 4 which concerns on this invention. It is a perspective view of the conventional application tool. It is a principal part enlarged view of the conventional coating tool shown in FIG. It is a perspective view of the conventional cutting tool.

Explanation of symbols

10 Application tool, cutting tool, breaking tool (tool structure)
20 Tool body 30 Tool cutting edge member 31 Cutting edge 40 Balance adjusting member 50 Slot 60 Object to be coated, object to be cut, object to be broken (worked object)

Claims (11)

At least one long tool blade member having a blade edge made of a material having a linear expansion coefficient different from that of the tool body and being machined into an object to be processed is provided in the longitudinal direction of the tool body. In the long tool structure which protrudes from the outer peripheral surface in a right-angle cross section and is fixed to the tool body along the longitudinal direction, the tool blade edge member is made of a material having the same linear expansion coefficient and longitudinal elastic modulus. The balance adjusting member that is generated when the balance adjusting member is fixed to the tool main body over the substantially same length as the tool cutting edge member in the longitudinal direction and is virtually cut in a cross section perpendicular to the longitudinal direction; A tool structure characterized in that a centroid (Gw) of a cross-sectional graphic with the tool cutting edge member is substantially matched with a centroid (Gs) of the cross-sectional graphic of the tool body. The tool structure according to claim 1, wherein the tool cutting edge member and the balance adjusting member are made of the same material. The tool structure according to claim 1 or 2, wherein the tool cutting edge member is made of a material having a hardness higher than that of the tool body. The tool structure according to any one of claims 1 to 3, wherein the tool cutting edge member is made of any one of hard materials of cemented carbide, cermet, and ceramics. The tool structure according to any one of claims 1 to 4, wherein the tool body is made of an iron-based alloy. The tool structure according to any one of claims 1 to 5, wherein at least one of the tool cutting edge member and the balance adjusting member is brazed and fixed to the tool body. The tool structure according to any one of claims 1 to 6, wherein at least one of the tool cutting edge member and the balance adjusting member is detachably fixed to the tool main body. The ratio (L1 / L2) between the length (L1) in the longitudinal direction of the tool structure and the length (L2) on the longitudinal side in the cross section perpendicular to the longitudinal direction is 1 or more. The tool structure according to any one of? 7. The tool cutting edge member is provided with a cutting edge for applying a coating liquid to an object to be coated, and the cutting edge protrudes from an outer peripheral surface in a cross section perpendicular to the longitudinal direction of the tool body. The tool structure according to item 1. The tool cutting edge member is provided with a cutting edge for cutting an object to be cut, and the cutting edge protrudes from an outer peripheral surface in a cross section perpendicular to the longitudinal direction of the tool main body. The described tool structure. The tool cutting edge member is provided with a cutting edge for breaking the object to be broken, and the cutting edge protrudes from an outer peripheral surface in a cross section perpendicular to the longitudinal direction of the tool body. The described tool structure.

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