JP2012030329A - Component for tool holding implement for holding tool using cutting oil, and tool holding implement for holding tool using cutting oil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool holding implement that holds a tool using cutting oil in which the rate of a dimensional change effected by the cutting oil (coolant liquid) is small, mechanical strength is high, and the cutting oil in use has superior disposability (recyclability).SOLUTION: The component is for the tool holding implement that holds the tool using the cutting oil and has a composition including a phenolic resin of a biomass origin, a phenolic resin of a non-biomass origin, and a cloth-like fiber with a size of 1 mm×1 mm to 30 mm×30 mm.

Description

  The present invention particularly relates to a tool holder for holding a tool in which cutting oil is used.

  Machine tools have evolved into devices that enable various types of work. For this reason, various tools for machining to be mounted on the machine tool are required. In the machining operation by the machine tool, tools having various forms, structures, and shapes are exchanged as necessary. This exchange work is desired to be agile and efficient. A tool used in a machine tool is usually stored and held in a tool holder (for example, a tool pot (registered trademark) manufactured by Fudou Co., Ltd.). The tool holder has a structure as shown in FIG. In FIG. 1, A is a tool, B is a tool holder in which the tool A is stored and held. For example, a plurality of tool holders B are connected by a chain. When the tool A to be used is required, the chain is activated and conveyed to the tool removal position. Then, the tool A is pulled out from the tool holder B and transferred to a processing place. Since the machining is usually performed by rotating the tool A, the tool A usually has a circular cross section. Therefore, the tool storage part of the tool holder B is also generally circular in cross section.

  By the way, in recent years, the tool holder B has been changed from a metal one to a phenol resin one. That is, it is proposed that the tool holder is composed of a thermosetting resin instead of metal from the viewpoint of reducing metal noise during handling (tool replacement) and light weight, and is supplied to the market. I came. In particular, phenolic resin has self-lubricating properties, excellent sliding properties, and water resistance, durability, and oil resistance. Therefore, phenolic resin tool holders can be used as metal tool holders. Instead, it came to occupy a large share.

As described above, the phenol resin has many excellent properties as a tool holder constituent material. However, it has been pointed out that the tool holder is worn by use, and the recyclability (disposability) is inferior when the tool holder needs to be replaced. That is, until now, this recyclability has not been a major problem, but recyclability has emerged as a major problem from the viewpoint of the CO ₂ problem and the cost of disposal.

  In view of this recyclability, it is conceivable to use a material derived from biomass.

  Now, although not developed in order to comprise the said tool holder, biomass phenol resin (phenol-derived resin derived from biomass) is known.

  For example, it is prepared by reacting a starch-based substance with phenols at 100 to 220 ° C. in the presence of an acid catalyst, liquefying, neutralizing, and mixing the resulting phenol-based resin with a curing agent and a filler. A phenol-based resin-containing composition has been proposed (Japanese Patent Laid-Open No. 2001-123012).

  Alternatively, a biomass resin composition comprising a phenolized biomass material and a reactive material having a melting point of 100 ° C. or less (a biomass composition for a biomass resin composition other than phenol having a phenolized biomass material and a melting point of 100 ° C. or less) The reactive substance is contained in an amount of 3 to 50% by weight based on the total biomass resin composition, and the reactive substance is butylphenol, octylphenol, nonylphenol, benzylphenol, benzylphenyl ether, An oil containing an aliphatic chain having an unsaturated bond or a biomass composition which is a drying oil) has been proposed (Japanese Patent Laid-Open No. 2004-352978: Japanese Patent No. 3911614).

  Alternatively, a thermosetting biomass resin composition comprising a phenolic biomass resin, a curing agent, and a filler that is a pulverized product of a paper base laminate (phenolic biomass resin, a curing agent, and a pulverized product of a paper base laminate) The phenolic biomass resin is a product obtained by phenolizing a biomass material with phenols in the presence of an acid catalyst, the biomass material is a lignocellulosic material, The curing agent is hexamethylenetetramine, the blending amount of hexamethylenetetramine is 12 to 25 parts by weight with respect to 100 parts by weight of the phenolized biomass resin, and the blending amount of the pulverized material of the paper base laminate is: 60 to 150 parts by weight of thermosetting biomass resin with respect to 100 parts by weight of phenolized biomass resin Narubutsu) is proposed (JP 2005-281556 JP: are Japanese Patent No. 4402499).

  Alternatively, a thermosetting biomass phenol resin molding material prepared by using a biomass phenol resin and a petrified phenol resin in combination has been proposed (Japanese Patent Laid-Open No. 2009-212279).

JP 2001-123012 A Japanese Patent No. 3911614 Japanese Patent No. 4402499 JP 2009-212279 A

  In the above Patent Documents 1, 2, and 3, it is said that a biomass-derived phenolic resin used in place of a phenol resin derived from coal / petroleum (non-biomass-derived phenolic resin) is rich in biodegradability. Yes.

  And it is disclosed that the phenol-type resin containing composition of patent document 1 is used in the field | area of an adhesive agent, a molding material, an impact-absorbing material, and a food packaging material.

  It is disclosed that the biomass resin composition of Patent Document 2 is used in the field of organic or inorganic base material binders (adhesives) and varnishes. Moreover, there is also a general description that the molded body obtained from the biomass resin composition of Patent Document 2 is used for parts such as machines, automobiles, electric / electronics, communication equipment, building materials, sundries such as synthetic lacquerware, and the like.

  There is a description that the biomass resin composition of Patent Document 3 is used for daily miscellaneous goods such as machinery and automobile parts, lacquerware and tableware, and household goods.

  The compositions in Patent Documents 1, 2, and 3 are said to be suitably used in many fields. However, it is unthinkable that it is said that it is suitable for any use such as an adhesive, a machine part, and lacquerware and tableware. Despite the different requirements, it is unlikely to be preferred in any field. In other words, in any case, only half-finished features can be obtained.

  In fact, tool holders molded with only biomass-derived phenolic resin instead of petroleum-derived phenolic resin (non-biomass-derived phenolic resin), especially tools that use water-soluble cutting oil The holding tool holder is a substitute that cannot withstand practical use because it has a large dimensional change rate and poor mechanical strength.

  According to Patent Document 4, the phenol-based resin derived from biomass has (1) poor kneading workability when it is made into a material, (2) high water absorption, and (3) large molding shrinkage. It is consistent with what he pointed out. Furthermore, Patent Document 4 also points out that biomass-derived phenolic resins have not been put into practical use as molding materials. And unlike the thing of the said patent documents 1, 2, 3, when patent document 4 uses together the phenolic resin derived from non-biomass (phenolic resin derived from petroleum) and the phenolic resin derived from biomass, He says he has been able to reduce the environmental burden while having performance equal to or better than that of non-biomass-derived phenolic resins.

  However, using the composition proposed by Patent Document 4 (composition in which a non-biomass-derived phenolic resin and a biomass-derived phenolic resin are used in combination), a tool holder (a tool using water-soluble cutting oil) is used. Even if the tool holder is held), the dimensional change rate is large and the mechanical strength is poor, as in the case where a composition not used in combination is used. It was a thing that can not be.

  Here, the requirement for resistance to cutting oil is based on the following phenomenon. Heat generation occurs when the tool A is used (processed). In order to prevent blade abrasion, the tool A is cooled with a coolant liquid (water-soluble cutting oil) that is an alkaline oil. For this reason, the cutting oil adheres to the tool A. The attached cutting oil adheres to the tool holder B when the tool A is inserted. If it does so, when the tolerance with respect to cutting oil is scarce, the tool holder B will deteriorate. For example, the tool holder B is swollen by cutting oil. If it does so, the dimensional accuracy of a tool insertion part (tool holding part) will fall. In some cases, it becomes difficult to hold the tool A. Therefore, it is very important to configure the tool holder with a material that is difficult to be deteriorated by the cutting oil.

  Accordingly, the problems to be solved by the present invention are excellent in disposal property (recyclability), excellent in mechanical strength, and further, the rate of dimensional change due to cutting oil (coolant liquid) is small, which hinders tool replacement. It is an object of the present invention to provide a tool holder (a tool holder that holds a tool for which cutting oil is used).

The above issues are
A constituent material of a holder for holding a tool in which cutting oil is used,
The constituent material of the tool holder is a composition including a phenol-based resin derived from biomass, a phenol-based resin derived from non-biomass, and cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm. It is solved by the tool holder constituent material.

The above issues are
A constituent material of a holder for holding a tool in which cutting oil is used,
The component material of the tool holder is a composition containing a phenol-based resin derived from biomass, a phenol-based resin derived from non-biomass, and cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm,
The non-biomass-derived phenolic resin is 30 to 100 parts by weight with respect to 100 parts by weight of the biomass-derived phenolic resin,
The cloth-like fiber having a size of 1 mm × 1 mm to 30 mm × 30 mm is 20 to 120 parts by weight with respect to 100 parts by weight of the phenol-based resin derived from biomass, and is solved by a tool holder constituting material. Is done.

The above issues are
A constituent material of a holder for holding a tool in which cutting oil is used,
The constituent material of the tool holder is preferably a phenolic resin derived from biomass, a phenolic resin derived from non-biomass, a cloth-like fiber having a size of 1 mm × 1 mm to 30 mm × 30 mm, and less than 1 mm × 1 mm A composition comprising powdered fibers of a size,
The non-biomass-derived phenolic resin is 30 to 100 parts by weight with respect to 100 parts by weight of the biomass-derived phenolic resin,
The cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm are 20 to 120 parts by weight with respect to 100 parts by weight of the biomass-based phenolic resin,
The powdered fiber having a size of less than 1 mm × 1 mm is solved by a tool holder constituting material, which is 30 to 130 parts by weight with respect to 100 parts by weight of the biomass-derived phenolic resin.

The above issues are
A constituent material of a holder for holding a tool in which cutting oil is used,
The constituent material of the tool holder is preferably a phenolic resin derived from biomass, a phenolic resin derived from non-biomass, a cloth-like fiber having a size of 1 mm × 1 mm to 30 mm × 30 mm, and less than 1 mm × 1 mm A composition comprising powdered fibers of a size,
The non-biomass-derived phenolic resin is 30 to 100 parts by weight with respect to 100 parts by weight of the biomass-derived phenolic resin,
The cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm are 20 to 120 parts by weight with respect to 100 parts by weight of the biomass-based phenolic resin,
The powdered fiber having a size of less than 1 mm × 1 mm is 30 to 130 parts by weight relative to 100 parts by weight of the biomass-derived phenolic resin,
The total amount of the cloth-like fiber and the powdery fiber is 60 to 200 parts by weight with respect to 100 parts by weight of the biomass-derived phenolic resin.

  The tool holder constituting material is preferably a composition containing carbon fibers and / or carbon fibers having a length of 0.5 to 30 mm. This is solved by a tool holder constituting material characterized in that the total amount of carbon fibers and / or carbon fibers is 20 to 50 parts by weight with respect to 100 parts by weight of the phenol-based resin derived from biomass.

The above issues are
A tool holder for holding a tool in which cutting oil is used,
This is solved by a tool holder characterized by being formed using the above-mentioned tool holder constituent material.

  In the present invention, as a constituent material of a tool holder for holding a tool in which cutting oil is used, not only a biomass-derived phenolic resin and a non-biomass-derived phenolic resin are used in combination, but also derived from biomass. A composition containing a phenolic resin, a non-biomass-derived phenolic resin, and cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm was used. By using these three components, a great synergistic effect that could not be achieved in the case of the two components was achieved.

  That is, when only biomass-derived phenolic resin is used as the curable resin, even if cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm are used, the mechanical strength is low and the cutting oil is used. The degree of dimensional change was large.

  In addition, even when a biomass-derived phenolic resin and a non-biomass-derived phenolic resin are used in combination, when a cloth-like fiber having a size of 1 mm × 1 mm to 30 mm × 30 mm is not used, or a cloth-like fiber is contained When the amount was small, the mechanical strength was still poor and the degree of dimensional change due to the cutting oil was large.

  On the other hand, when a phenol-based resin derived from biomass and a phenol-based resin derived from non-biomass and a cloth-like fiber having a size of 1 mm × 1 mm to 30 mm × 30 mm are used, the mechanical strength is high, and The degree of dimensional change due to the cutting oil is small, which indicates that the synergistic effect of the three components is exhibited.

Cross section of tool holder

  1st invention is a constituent material of the holder holding the tool in which cutting oil is used. The tools held by the tool holder are not necessarily limited to those that use cutting oil. However, there are very many cases where water-soluble cutting oil is used for the tool. Accordingly, in the present invention, a tool that uses a water-soluble cutting oil is particularly targeted, and a tool holder that holds the tool is a target.

  The constituent material of the tool holder is a composition containing at least a phenolic resin derived from biomass, a phenolic resin derived from non-biomass, and cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm.

  In the present invention, the non-biomass-derived phenolic resin is a thermosetting phenolic resin constituted by using phenols and aldehydes derived from coal chemistry or petrochemistry. Examples thereof include novolak-type phenol resins and resol-type phenol resins obtained by reacting phenol produced from benzene by the cumene method and formaldehyde in the presence of an acid or a base. Since this type of phenolic resin can be said to be well known, detailed description thereof is omitted.

  The biomass-derived phenolic resin in the present invention is a biomass material having an aldehyde group (-CHO) instead of the aldehydes used in the case of the non-biomass-derived phenolic resin (for example, sugar (starch) or cellulose). There is a feature in the point using. Examples of cellulose sources and starch sources include wood fibers, wood fibers, wood chips, thinned wood, lignocellulosics obtained by pulverizing veneered bark, etc., plant fibers such as straw and rice straw, old and old rice, food waste, etc. . By heating a mixture of this type of cellulose source or starch source (biomass), a liquefaction medium, a liquefaction regulator and an acid catalyst at 110 to 160 ° C. for 5 to 200 minutes in a closed vessel equipped with a reflux device or the like, Biomass-derived phenolic resin is obtained. This phenol-derived resin derived from biomass has less environmental impact than phenol-based resins derived from non-biomass (phenolic resins derived from coal chemistry or petrochemistry). For example, biodegradation is likely to occur. Examples of the liquefaction medium include phenols having an active group, polyhydric alcohols, cyclic esters such as ε-caprolactone, oxyacids such as lactic acid, cyclic carbonates such as ethylene carbonate and propylene carbonate, and glycidyl compounds. Examples of the liquefaction regulator include methyl alcohol, ethyl alcohol, propyl alcohol, isopropyl alcohol, butyl alcohol, isobutyl alcohol, sec-butyl alcohol, tert-butyl alcohol, n-amyl alcohol, isoamyl alcohol, hexyl alcohol, heptyl alcohol, octyl. Alcohol, capryl alcohol, nonyl alcohol, decyl alcohol, undecyl alcohol, lauryl alcohol (dodecyl alcohol), tridecyl alcohol, myristyl alcohol, pentadecyl alcohol, cetyl alcohol, heptadecyl alcohol, stearyl alcohol, nonadecyl alcohol, eicosyl alcohol , Ceryl alcohol, melyl alcohol, allyl alcohol, crotyl alcohol Call, propargyl alcohol, cyclopentanol, cyclohexanol, benzyl alcohol, cinnamyl alcohol, furfuryl alcohol and the like. Examples of the acid catalyst include proton acids such as sulfuric acid and phenol sulfone. Biomass-derived phenolic resins are also well-known today, and details thereof are omitted. Biomass-derived phenolic resins are also disclosed in Patent Documents 1, 2, 3, and 4.

  It is a cloth-like fiber (cloth: for example, cotton cloth) that is used as an essential component of the present invention together with a phenol-based resin derived from biomass and a phenol-based resin derived from non-biomass. This cloth-like fiber can be obtained, for example, by cutting or pulverizing a two-dimensionally spread cloth (for example, cotton cloth: used cotton cloth) woven using natural fibers. The size is 1 mm × 1 mm to 30 mm × 30 mm. In the present invention, not only the fabric fiber is an essential requirement but also the size is an essential requirement for the following reason. That is, when the cloth fiber was too small, the effect of improving the mechanical strength and water-soluble cutting oil resistance was poor. Larger cloth fibers were more effective in improving mechanical strength and water-soluble cutting oil resistance. However, if it becomes too large, the cloth-like fibers are difficult to disperse uniformly in the composition (resin), and the presence thereof is biased. For this reason, it is considered that the features of mechanical strength and water-soluble cutting oil resistance will be reduced. That is, in such a case, the object of the present invention is unlikely to be achieved. In severe cases, even molding was impossible. And, in order to make it possible to mold the cloth-like fibers uniformly, kneading over a long period of time is required, and the productivity is extremely lowered. From such a viewpoint, in the present invention, the size is 30 mm × 30 mm or less. In addition, from the viewpoint of the improvement effect of mechanical strength and water-soluble cutting oil resistance, it was preferably a cloth-like fiber having a size of 1 mm × 1 mm to 10 mm × 10 mm, more preferably 1 mm × 1 mm to 6 mm × 6 mm. In the present specification, a fiber of less than 1 mm × 1 mm is referred to as a powder fiber. The fabric was preferably a cotton fabric.

  The proportions of the essential three components are as follows. That is, in the present composition, the non-biomass-derived phenolic resin is 30 to 100 parts by weight with respect to 100 parts by weight of the biomass-derived phenolic resin. More preferably, it is 35 parts by weight or more. That is, in the case of 35 parts by weight or more, mechanical strength and water-soluble cutting oil resistance were further improved. As the proportion of non-biomass-derived phenolic resin increases, the recyclability / disposability decreases accordingly. From such a viewpoint, the case of 60 parts by weight or less was more preferable. The cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm are 20 to 120 parts by weight with respect to 100 parts by weight of the biomass-derived phenolic resin. That is, when the amount of the cloth fiber was too small, the effect of improving the mechanical strength and water-soluble cutting oil resistance was small. Therefore, it was 20 parts by weight or more. In the case of 30 parts by weight or more, mechanical strength and water-soluble cutting oil resistance were further improved. In many cases, it was difficult to uniformly disperse in the resin. From such a viewpoint, it was more preferably 110 parts by weight or less.

  In addition to the above components, the composition of the present invention often contains powdered fibers (cloth (fibers) of less than 1 mm × 1 mm). This is because when old cloth is cut and pulverized, it is inevitably included that is less than 1 mm × 1 mm. Of course, you can remove this kind of small thing. However, when both were included, no significant performance degradation was caused. In addition to the powdered fiber obtained by cutting and pulverizing the cloth, wood flour can also be used. In addition, when only this kind of small powdery fiber was included, the strength was small and the dimensional change rate was large. This component is preferably 30 to 130 parts by weight with respect to 100 parts by weight of the phenol-based resin derived from biomass. And the total amount of the said cloth-like fiber and the said powder-like fiber becomes like this. Preferably it is 60-200 weight part with respect to 100 weight part of said phenolic resins derived from biomass.

  The composition of the present invention preferably contains reinforcing fibers in addition to the above components. For example, glass fiber, carbon fiber, aramid fiber, metal fiber, etc. can be used. However, glass fiber and carbon fiber are particularly preferable from the viewpoint of strength, dimensional accuracy, and the like. Among these, glass fiber was preferable. The length of the fiber is preferably 0.5 to 30 mm. The amount of the fiber is preferably 20 to 50 parts by weight with respect to 100 parts by weight of the phenol-based resin derived from biomass.

  The composition of this invention contains various additives other than the said component as needed. For example, curing agents such as hexamine, inorganic fillers such as calcium carbonate and aluminum hydroxide, colorants such as spirit black, lubricants such as calcium stearate, curing aids such as calcium hydroxide, silicone water absorption inhibitors (Asahi Kasei Wakka) -BC2103) manufactured by Silicone Chemical Co., Ltd.

  Then, the above essential components, other preferable components, and a solvent such as methanol, for example, a high-speed rotary blade granulator such as a Henschel mixer or a super mixer, a pressure kneader, an open kneader, or a twin screw extruder The mixture is kneaded and granulated at a temperature of about room temperature to 80 ° C. The tool holder according to the present invention is obtained by using the granulated product thus obtained, for example, by compression molding, injection molding, or transfer molding. The tool holder of the present invention thus molded had a breaking tensile strength of 900 kgf or more. And dimensional change rate after immersion for 150 days at 50 ° C. in water-soluble cutting oil (Synthetic type pH 9-10 water-soluble cutting oil manufactured by Taiyu Co., Ltd .: alkaline coolant liquid) The dimensional change rate of the diameter of the opening of the insertion portion (conical truncated cone portion) was 0.7% or less. If the resistance to the alkaline coolant is poor, deformation due to swelling occurs, for example, and the tool cannot be stored well.

  Hereinafter, the present invention will be described more specifically, but the present invention is not limited to the following examples.

[Examples and Comparative Examples]
[Phenolic resin 1 derived from biomass]
Manufactured using wood chips, phenol, formalin. The bio ratio was 30%.
[Phenolic resin 2 derived from biomass]
Manufactured using sugar, phenol and formalin. The bio ratio was 45%.
[Phenol-based resin derived from non-biomass]
Novolak type phenolic resin manufactured by Gunei Chemical Industry Co., Ltd. [Cloth-like fiber]
Manufactured by cutting cotton fabric. The size of the cloth-like fiber was 1 mm × 1 mm to 5 mm × 5 mm.
[Powdered fiber]
Manufactured by cutting and crushing cotton fabric. The size of the powdered fiber was less than 1 mm × 1 mm.
[Glass fiber]
It is a glass fiber having a fiber length of 1 to 6 mm, a fiber diameter of 6 to 13 μm, and surface-treated with an aminosilane coupling agent.

[Example 1]
70 parts by weight of the biomass biomass-derived phenolic resin 1, 30 parts by weight of the non-biomass-derived phenolic resin, 73 parts by weight of the cloth-like fiber, 41 parts by weight of the powdered fiber, 19 Parts by weight of the above glass fibers, 15 parts by weight of hexamine, 8 parts by weight of calcium carbonate (inorganic filler), 3 parts by weight of spirit black (colorant), 3 parts by weight of calcium stearate (lubricant) 3 parts by weight of calcium hydroxide (curing aid) was put into a Henschel mixer, kneaded at a temperature of 40 ° C. and granulated. A tool holder as shown in FIG. 1 was obtained by compression molding using the granulated product.

[Example 2]
A tool holder as shown in FIG. 1 was obtained in the same manner as in Example 1 except that the biomass-based phenolic resin 1 was 55 parts by weight and the non-biomass-derived phenolic resin was 45 parts by weight.

[Example 3]
A tool holder as shown in FIG. 1 was obtained in the same manner as in Example 1 except that 23 parts by weight of the cloth fiber and 91 parts by weight of the powdered fiber were used.

[Example 4]
In Example 1, it carried out similarly except having used biomass biomass origin phenolic resin 2 instead of biomass biomass origin phenolic resin 1, and obtained the tool holder as shown in FIG.

[Example 5]
In Example 3, the same procedure was performed except that the biomass biomass-derived phenolic resin 2 was used in place of the biomass biomass-derived phenolic resin 1, and a tool holder as shown in FIG. 1 was obtained.

[Comparative Example 1]
A tool holder as shown in FIG. 1 was obtained in the same manner as in Example 1 except that the amount of the cloth-like fiber was 0 part by weight and the amount of the powdery fiber was 114 parts by weight.

[Comparative Example 2]
In Example 1, it carried out similarly except having used the cloth-like fiber obtained by cutting cotton cloth into the magnitude | size of 40 mm x 40 mm-50 mm x 50 mm instead of the said cloth-like fiber. However, in this case, the tool holder as shown in FIG. 1 could not be formed.

[Comparative Example 3]
In Example 1, the same procedure was carried out except that the amount of the phenolic resin 1 derived from biomass biomass was 100 parts by weight, and the amount of the phenolic resin derived from non-biomass was 0 part by weight, as shown in FIG. A tool holder was formed.

[Comparative Example 4]
In Example 1, the same procedure was carried out except that the amount of the phenolic resin 1 derived from biomass biomass was 0 parts by weight and the amount of the phenolic resin derived from non-biomass was 100 parts by weight, as shown in FIG. A tool holder was formed.

[Characteristic]
About the tool holder obtained in each of the above examples, after immersing in a tensile type strength and synthetic type pH 9-10 water-soluble cutting oil (alkaline coolant) manufactured by Taiyu Co., Ltd. at 50 ° C. for 150 days. Since the dimensional change rate of the diameter of the opening of the tool insertion part (conical truncated cone part) of the tool holder was examined, the result is shown in Table 1 below.

Table-1
Breaking tensile strength Alkaline coolant immersion dimensional change rate Example 1 1000Kgf 0.59%
Example 2 1000 Kgf 0.55%
Example 3 980 Kgf 0.62%
Example 4 950 Kgf 0.66%
Example 5 930 Kgf 0.68%
Comparative Example 1 725 Kgf 0.73%
Comparative Example 2 Unmoldable Comparative Example 3 750 Kgf 1.98%
Comparative Example 4 800 Kgf 0.90%

  From Table 1, a tool holder composed of a composition containing a phenol-based resin derived from biomass, a phenol-based resin derived from non-biomass, and cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm, It can be seen that it has high mechanical strength and is less likely to undergo dimensional changes due to water-soluble cutting oil. In particular, it includes a biomass-derived phenolic resin, a non-biomass-derived phenolic resin, and cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm, and the non-biomass-derived phenolic resin is a biomass-derived phenolic resin. 30 to 100 parts by weight with respect to 100 parts by weight of resin, and a composition in which cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm are 20 to 120 parts by weight with respect to 100 parts by weight of biomass-derived phenolic resin. It can be seen that the constructed tool holder has a high mechanical strength and hardly undergoes dimensional changes due to the water-soluble cutting oil.

  On the other hand, as can be seen from Comparative Example 1, the tool holder composed of a composition having a small amount of cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm is inferior in mechanical strength and has water-soluble cutting. Large dimensional change due to oil.

  Moreover, even if it is comprised with the composition containing cloth-like fiber, when this cloth-like fiber is less than 1 mm x 1 mm, as can be seen from Comparative Example 1, the tool holder made of this composition is: It is inferior in mechanical strength and has a large dimensional change due to water-soluble cutting oil.

  Even when a composition containing cloth-like fibers was used, if the cloth-like fibers were too large, the tool holder could not be molded. This is probably because the cloth-like fiber was not uniformly dispersed in the composition because the cloth-like fiber was too large, and the molding was hindered. Even if it can be molded, the cloth-like fibers are not uniformly dispersed in the composition, and as a result, there are many places where the cloth-like fibers do not exist, and the characteristics of mechanical strength and dimensional change. Seems to have declined.

A tool composed of a composition in which a phenolic resin derived from biomass biomass and a phenolic resin derived from non-biomass are not used in combination even if a suitable amount of cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm is included. As can be seen from Comparative Example 3, the holder is inferior in mechanical strength and has a large dimensional change due to the water-soluble cutting oil.

Table-1
Breaking tensile strength Alkaline coolant immersion dimensional change rate Example 1 1000Kgf 0.59%
Example 2 1000 Kgf 0.55%
Example 3 980 Kgf 0.62%
Example 4 950 Kgf 0.66%
Example 5 930 Kgf 0.68%
Comparative Example 1 725 Kgf 0.73%
Comparative Example 2 Unmoldable Comparative Example 3 750 Kgf 1.98%

Claims (6)

A constituent material of a holder for holding a tool in which cutting oil is used,
The component material of the tool holder is a composition containing a phenol-based resin derived from biomass, a phenol-based resin derived from non-biomass, and cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm,
The non-biomass-derived phenolic resin is 30 to 100 parts by weight with respect to 100 parts by weight of the biomass-derived phenolic resin,
The tool holder constituting material, wherein the cloth-like fibers having a size of 1 mm x 1 mm to 30 mm x 30 mm are 20 to 120 parts by weight with respect to 100 parts by weight of the phenol resin derived from biomass. The tool holder constituting material is a composition further including powdered fibers having a size of less than 1 mm × 1 mm,
2. The tool holder constituting material according to claim 1, wherein the powdered fiber having a size of less than 1 mm × 1 mm is 30 to 130 parts by weight with respect to 100 parts by weight of the phenol resin derived from biomass. The tool holder constituent material is a composition further comprising glass fibers and / or carbon fibers having a length of 0.5 to 30 mm,
The total amount of the glass fiber and / or the carbon fiber is 20 to 50 parts by weight with respect to 100 parts by weight of the phenol-based resin derived from biomass, The tool holder constituting material according to claim 1 or 2 . 4. The tool holder constituting material according to claim 1, wherein the cloth-like fiber is made of cotton cloth. A constituent material of a holder for holding a tool in which cutting oil is used,
The constituent material of the tool holder is a composition including a phenol-based resin derived from biomass, a phenol-based resin derived from non-biomass, and cloth-like fibers having a size of 1 mm × 1 mm to 30 mm × 30 mm. Tool holder constituent material. A tool holder for holding a tool in which cutting oil is used,
A tool holder formed by using the tool holder constituting material according to any one of claims 1 to 5.