Cutting tool

Abstract

The present invention provides a cutting work member, which is excellent in cutting workability when subjected to cutting work such as turning, cutting or hole making using a mechanical tool, and can suppress the generation of burrs. The cutting work member is composed of a molded body of a resin composition containing a thermoplastic resin (A) and a reinforcing material (B), wherein the thermoplastic resin (A) is a crystalline thermoplastic resin, the reinforcing material (B) is an inorganic reinforcing material having a Mohs hardness of 5 or less, and a cutting workability parameter of the cutting work member, which is defined by the fracture toughness K1c and the bending elastic modulus according to the following formula (1), is 20 m 1／2 ~ 180 m 1／2 . Cutting workability parameter = (fracture toughness K1c / bending elastic modulus) x 10 5 ... Formula (1)

Description

Technical Field

[0001] This invention relates to machining components made of a molded body of a resin composition. Background Technology

[0002] In the prior art, inspection tools such as semiconductor inspection fixtures equipped with contact probe pins are used for performance testing of electronic devices such as semiconductor devices. With the increasing sophistication of semiconductors and components in recent years, inspection tools using these contact probe pins also require further refinement.

[0003] Because these inspection tools require mechanical properties, heat resistance, chemical resistance, and dimensional stability, a plate-shaped super engineering plastic molded body (thermoplastic resin molded body) with multiple micro-holes in the holding and guiding parts of the contact probe pin is used.

[0004] The thermoplastic resin constituting this thermoplastic molded body has strong viscosity and toughness. Therefore, when the thermoplastic molded body is machined with openings, burrs (so-called strip-shaped chips) are generated around the opening and combine with the cutting surface of the body. These burrs can cause problems such as poor insertion of contact probe pins or malfunctions. Therefore, Patent Document 1 proposes a solution to suppress burr formation by using a thermoplastic molded body incorporating conductive fillers.

[0005] Existing technical documents Patent documents Patent Document 1: Japanese Patent Application Publication No. 2005-226031 Summary of the Invention

[0006] The problem that the invention aims to solve However, while thermoplastic resin molded bodies like those in Patent Document 1 exhibit excellent electrical conductivity, they cannot be used as insulators. Furthermore, in resin molded bodies using carbon fiber as a conductive filler, during machining processes such as hole drilling, issues arise where the drill bit encounters the carbon fiber within the resin molded body, causing the hole position in the workpiece to shift, resulting in decreased drilling accuracy.

[0007] Furthermore, with the increasing sophistication of semiconductors and components in recent years, inspection tools using contact probe pins also require further precision. Therefore, it is necessary not only to suppress burrs generated during machining of the thermoplastic resin molded parts used in these tools, but also to shorten the machining time of the thermoplastic resin molded parts to improve machinability. However, existing thermoplastic resin molded parts suffer from difficulties in shortening machining time and unsatisfactory machinability.

[0008] The present invention was made in view of the above circumstances, and its object is to provide a cutting component that has excellent machinability when performing cutting operations such as shaving, cutting or drilling using mechanical tools, and can suppress the generation of burrs.

[0009] Technical solutions for solving the problem The present invention provides a cutting component having the following configuration.

[0010] Item 1. A machining component comprising a molded body of a resin composition containing a thermoplastic resin (A) and a reinforcing material (B), wherein the thermoplastic resin (A) is a crystalline thermoplastic resin, and the reinforcing material (B) is an inorganic reinforcing material with a Mohs hardness of 5 or less, and the machining parameter of the machining component, defined by the following formula (1) based on the breaking toughness K1c and the flexural modulus, is 20m. 1／2 ~180m 1／2 .

[0011] Machinability parameter = (Failure toughness K1c / Flexural modulus) × 10 5 ・・・Form (1) Item 2. The cutting component as described in Item 1, wherein the load deformation temperature (HDT) of the cutting component under a load of 1.8 MPa is 150°C or higher.

[0012] Item 3. The cutting component as described in Item 1 or Item 2, wherein the thermoplastic resin (A) is selected from at least one of polyphenylene sulfide resin, polyether aromatic ketone resin, polyamide resin and liquid crystal polymer.

[0013] Item 4. The cutting component as described in any one of Items 1 to 3, wherein the aspect ratio of the reinforcing material (B) is 3 to 100.

[0014] Item 5. The cutting component as described in any one of Items 1 to 4, wherein the reinforcing material (B) is a fibrous reinforcing material with an average fiber length of 1 μm to 300 μm.

[0015] Item 6. The cutting component as described in any one of Items 1 to 5, wherein the reinforcing material (B) is at least one fiber selected from potassium titanate fiber, wollastonite fiber and titanium dioxide fiber.

[0016] Item 7. The cutting component as described in any one of Items 1 to 6, wherein, in 100% by mass of the total amount of the resin composition, the content of the thermoplastic resin (A) is 20% to 95% by mass, and the content of the reinforcing material (B) is 5% to 55% by mass.

[0017] Item 8. A cutting component as described in any one of Items 1 to 7, wherein the thermoplastic resin (A) is a polyether aromatic ketone resin, and the resin composition is subjected to a shear rate of 122 sec. －1 The melt viscosity at 380℃ is 1000 Pa·s to 2900 Pa·s.

[0018] Item 9. A cutting component as described in any one of Items 1 to 7, wherein the thermoplastic resin (A) is a polyamide resin, and the resin composition is used at a shear rate of 122 sec. －1 The melt viscosity at 350℃ is 150 Pa·s to 260 Pa·s.

[0019] Item 10. The cutting component as described in any one of Items 1 to 9 is an injection-molded, compression-molded, or extruded component of a resin composition containing the above-described thermoplastic resin (A) and the above-described reinforcing material (B).

[0020] Item 11. The cutting component as described in any one of Items 1 to 10, which is a compression molded body of the above-described resin composition containing the above-described thermoplastic resin (A) and the above-described reinforcing material (B).

[0021] Item 12. The cutting component as described in any one of Items 1 to 11 is a molded body having a plate-like portion.

[0022] Item 13. The cutting component as described in any one of Items 1 to 12, used for at least one selected from semiconductor inspection sockets, wafer inspection probe cards, printed circuit board inspection fixtures, TAB (Tape Automated Bonding) inspection fixtures, flexible printed circuit board inspection fixtures, and chip component inspection fixtures.

[0023] Invention Effects According to the present invention, a cutting component is provided that exhibits excellent machinability and can suppress the generation of burrs when performing cutting operations such as shaving, cutting, or drilling using mechanical tools. Attached Figure Description

[0024] Figure 1 This is a schematic diagram showing the shape of the drill bit fixing fixture manufactured in Example 1. Detailed Implementation

[0025] The following describes an example of a preferred embodiment of the present invention, but the following embodiment is merely illustrative and the present invention is not limited to the following embodiment at all.

[0026] The cutting component of the present invention is composed of a molded body of a resin composition. The resin composition contains a thermoplastic resin (A) and a reinforcing material (B), and may further contain other additives as needed. The thermoplastic resin (A) is a crystalline thermoplastic resin. Furthermore, the reinforcing material (B) is an inorganic reinforcing material with a Mohs hardness of 5 or less.

[0027] In this invention, the machinability parameter of the component for machining, defined by the following formula (1) based on the breaking toughness K1c and the flexural modulus, is 20m. 1／2 ~180m 1／2 .

[0028] Machinability parameter = (Failure toughness K1c / Flexural modulus) × 10 5 ・・・Form (1) The cutting component of the present invention has the overall structure described above. In particular, since the reinforcing material (B) is an inorganic reinforcing material with a Mohs hardness of 5 or less, and the cutting parameter of the cutting component is 20m... 1／2 ~180m 1／2 Therefore, when using machine tools for cutting, slicing, or drilling, it exhibits excellent machinability and can shorten processing time. Furthermore, the cutting component of this invention can suppress the generation of burrs during cutting and improve the accuracy of drilling.

[0029] In this invention, the cutting performance parameter of the component for machining is 20m. 1／2 The above 180m 1／2 The following is preferred: 20m 1／2 The above, preferably 80m 1／2 The following is more preferably 20m 1／2 The above, and more preferably 75m 1／2 Hereinafter, 20m is further preferred. 1／2 The above, and more preferably 70m 1／2 The following is particularly preferred: 30m 1／2 The above, and especially preferred, is 60m. 1／2 Hereinafter, 35m is further particularly preferred. 1／2 The above, and more particularly preferred, is 55m. 1／2 The optimal value is 35m. 1／2 The above, and the optimal choice, is 50m. 1／2 The following is a summary of the description of the cutting properties of the component. Furthermore, the aforementioned machinability parameter for the machining component is 20m. 1／2 ~180m 1／2 Preferably 20m 1／2 ~80m 1／2 More preferably 20m 1／2 ~75m 1／2Further preferred is 20m 1／2 ~70m 1／2 30m is particularly preferred. 1／2 ~60m 1／2 More particularly preferred is 35m 1／2 ~55m 1／2 The optimal value is 35m. 1／2 ~50m 1／2 .

[0030] When the aforementioned machinability parameters of the cutting component are within the aforementioned range, the machinability during cutting is superior, and the generation of burrs during cutting can be further suppressed.

[0031] In this invention, the load deformation temperature (HDT) of the cutting component under a load of 1.8 MPa is preferably 150°C or higher, and preferably 320°C or lower. In this case, by increasing the spindle speed and feed rate of the drill bit during cutting, the machining time can be further shortened. Furthermore, the appearance of the cut surface of the cutting component can be improved, thus obtaining a cut surface with fine texture and a good appearance. The aforementioned load deformation temperature (HDT) can be adjusted by the type of thermoplastic resin (A), the amount of reinforcing material (B), the molding method, etc.

[0032] The constituent elements of the resin composition constituting the cutting component of the present invention will be described below.

[0033] <Resin Composition> The resin composition used in this invention contains a thermoplastic resin (A) and a reinforcing material (B), and may further contain other additives as needed. The components of the resin composition used in this invention will be described below.

[0034] (Thermoplastic resin (A)) The thermoplastic resin (A) used in this invention is a crystalline thermoplastic resin. "Crystallization" means that the heat of fusion measured using differential scanning calorimetry (DSC) at a cooling rate of 10°C / min from a molten state to 50°C under a nitrogen atmosphere, followed by a heating rate of 10°C / min, is greater than 30 J / g. "Amorphous" means that the heat of fusion measured using DSC at a cooling rate of 10°C / min from a molten state to 50°C under a nitrogen atmosphere, followed by a heating rate of 10°C / min, is less than 30 J / g.

[0035] Examples of crystalline thermoplastic resins include polyolefin resins, polyacetal resins, polyester resins, polyether aromatic ketone resins, polysulfones, polyphenylene sulfide resins, polyamide resins, and liquid crystal polymers. Examples of polyester resins include polybutylene terephthalate or polyethylene terephthalate. Examples of polyether aromatic ketone resins include polyether ether ketone, polyether ketone, or polyphenylene sulfide ketone. The crystalline thermoplastic resin is preferably selected from at least one of polyphenylene sulfide resins, polyether aromatic ketone resins, polyamide resins, and liquid crystal polymers. This allows for a higher level of improvement in the heat resistance, chemical resistance, and dimensional stability of the machined parts. These crystalline thermoplastic resins can be used individually or in combination of two or more.

[0036] Among these crystalline thermoplastic resins, thermoplastic resins with a melting point of 220°C or higher or a glass transition temperature of 120°C or higher are preferred (hereinafter also referred to as heat-resistant resins). The melting point and glass transition temperature can be determined using a differential scanning calorimeter (DSC). Since crystalline thermoplastic resins are heat-resistant resins, they are not easily deformed or discolored due to frictional heat even when machining parts for machining, such as drilling holes.

[0037] When the thermoplastic resin (A) is a polyether aromatic ketone resin, a capillary rheometer is used at a temperature 37°C higher than the melting point and a shear rate of 122 sec. －1 The measured melt viscosity is preferably 1000 Pa·s to 2900 Pa·s, more preferably 1200 Pa·s to 2900 Pa·s. Furthermore, when the thermoplastic resin (A) is a polyamide resin, a capillary rheometer is used at a temperature 44°C higher than the melting point and a shear rate of 122 sec. －1 The measured melt viscosity is preferably 120 Pa·s to 260 Pa·s.

[0038] When the thermoplastic resin (A) is a polyether aromatic ketone resin, the resin composition constituting the cutting part is subjected to a shear rate of 122 seconds. －1 The melt viscosity at 380°C is preferably 1000 Pa·s to 2900 Pa·s, more preferably 1500 Pa·s to 2900 Pa·s, even more preferably 2000 Pa·s to 2900 Pa·s, and particularly preferably 2100 Pa·s to 2500 Pa·s. Furthermore, when the thermoplastic resin (A) is a polyamide resin, the resin composition constituting the machining part has a shear speed of 122 sec. －1 The melt viscosity at 350°C is preferably 150 Pa·s to 260 Pa·s. When the melt viscosity of the above resin composition is within the above range, the formability of the machined parts can be further improved.

[0039] Of the total amount of the resin composition, 100% by mass, the content of thermoplastic resin (A) is preferably 20% to 95% by mass, more preferably 35% to 85% by mass, and even more preferably 40% to 80% by mass. By setting the content of thermoplastic resin (A) within the above range, the machinability of the cutting parts can be further improved.

[0040] (Reinforcing Material (B)) The reinforcing material (B) used in this invention is an inorganic reinforcing material with a Mohs hardness of 5 or less, and is particularly preferably a powdered reinforcing material composed of particles with a Mohs hardness of 5 or less. The Mohs hardness of the inorganic reinforcing material is, for example, 1 to 5, preferably 2 to 5. Mohs hardness is an index indicating the hardness of a material; when minerals are rubbed together, the one that is scratched is the material with lower hardness. In this invention, Mohs hardness can also be converted based on Vickers hardness.

[0041] The reinforcing material (B) is a powdered inorganic reinforcing material composed of particles. The particle shape is not particularly limited as long as it can improve the strength or rigidity of the machined part. For example, fibrous reinforcing materials (B1) or plate-like reinforcing materials (B2) can be used as reinforcing material (B), where fibrous reinforcing material (B1) is a powder composed of fibrous particles, and plate-like reinforcing material (B2) is a powder composed of plate-like particles. The reinforcing material (B) is preferably selected from one or more of fibrous reinforcing materials (B1) and plate-like reinforcing materials (B2). The particle shape of the reinforcing material (B) can be determined, for example, by observation using a scanning electron microscope (SEM).

[0042] In this invention, fibrous particles refer to particles in which, within the cuboid circumscribed with the particle, the longest side of the cuboid with the smallest volume (the circumscribed cuboid) is defined as the major diameter L, the second longest side as the minor diameter B, and the shortest side as the thickness T (B > T), and both L / B and L / T are 3 or greater. The major diameter L corresponds to the fiber length, and the minor diameter B corresponds to the fiber diameter. Furthermore, plate-like particles refer to particles where L / B is less than 3 and L / T is 3 or greater.

[0043] Specific examples of fibrous reinforcing materials (B1) include inorganic fibers such as potassium titanate fibers, wollastonite fibers, aluminum borate fibers, magnesium borate fibers, calcium stearate fibers, zinc oxide fibers, basic magnesium sulfate fibers, alumina fibers, silicon carbide fibers, boron fibers, or titanium dioxide fibers. Potassium titanate fibers can also be formed by coating their surface with conductive materials such as tin oxide / antimony oxide. Titanium dioxide fibers can also be formed by coating their surface with conductive materials such as tin oxide / antimony oxide, resulting in monoclinic titanium dioxide fibers. These fibrous reinforcing materials (B1) can be used alone or in combination.

[0044] From the viewpoint of suppressing burrs generated during hole-making of cutting parts and further improving hole-making accuracy, the fibrous reinforcement material (B1) is preferably a particle with a Mohs hardness of 2 to 5, more preferably at least one of potassium titanate fiber and wollastonite fiber, and particularly preferably potassium titanate fiber.

[0045] From the viewpoint of further improving the machinability of cutting or cutting parts for machining, or for drilling holes in the drill bit, the average fiber length of the fibrous reinforcement material (B1) is preferably 1 μm to 300 μm, more preferably 1 μm to 200 μm, even more preferably 3 μm to 100 μm, and particularly preferably 5 μm to 50 μm. Furthermore, the average fiber diameter of the fibrous reinforcement material (B1) is preferably 0.01 μm to 1 μm, more preferably 0.03 μm to 0.9 μm, even more preferably 0.05 μm to 0.8 μm, and particularly preferably 0.1 μm to 0.7 μm. Additionally, the average aspect ratio of the fibrous reinforcement material (B1) is preferably 3 to 200, more preferably 3 to 100, even more preferably 3 to 50, and particularly preferably 3 to 40.

[0046] As potassium titanate fibers, widely known materials can be used, such as tetratitanate fibers, hexatitanate fibers, and octatitanate fibers. The size of the potassium titanate fibers is not particularly limited as long as it falls within the size range of the aforementioned fibrous reinforcing material (B1). The average fiber length is preferably 1 μm to 50 μm, more preferably 3 μm to 30 μm, and even more preferably 3 μm to 20 μm. The average fiber diameter of the potassium titanate fibers is preferably 0.01 μm to 1 μm, more preferably 0.05 μm to 0.8 μm, and even more preferably 0.1 μm to 0.7 μm. Furthermore, the average aspect ratio of the potassium titanate fibers is preferably 10 or more, more preferably 10 to 100, and even more preferably 15 to 35.

[0047] Wollastonite fiber is an inorganic fiber composed of calcium metasilicate. The size of the wollastonite fiber is not particularly limited as long as it falls within the size range of the aforementioned fibrous reinforcing material (B1). Its average fiber length is preferably 5 μm to 180 μm, more preferably 7 μm to 100 μm, and even more preferably 9 μm to 40 μm. The average fiber diameter of the wollastonite fiber is preferably 0.1 μm to 15 μm, more preferably 1 μm to 10 μm, and even more preferably 2 μm to 7 μm. Furthermore, the average aspect ratio of the wollastonite fiber is preferably 3 or more, more preferably 3 to 30, and even more preferably 3 to 15.

[0048] The average fiber length and average fiber diameter of the fibrous reinforcement material (B1) can be determined by observation using a scanning electron microscope (SEM). The average aspect ratio (average fiber length / average fiber diameter) of the fibrous reinforcement material (B1) can be calculated from the aforementioned average fiber length and average fiber diameter. When determining the average fiber length and average fiber diameter of the fibrous reinforcement material (B1), for example, multiple fibrous reinforcement materials (B1) are photographed using a scanning electron microscope (SEM). From the observed images, 300 fibrous reinforcement materials (B1) are randomly selected, and their fiber lengths and diameters are measured. Then, the average fiber length is obtained by summing all fiber lengths and dividing by the number of samples, and the average fiber diameter is obtained by summing all fiber diameters and dividing by the number of samples.

[0049] Specific examples of plate-like reinforcing materials (B2) include mica, muscovite, sericite, illite, talc, kaolinite, montmorillonite, boehmite, montmorillonite, vermiculite, potassium titanate, potassium lithium titanate, or potassium magnesium titanate. These plate-like reinforcing materials (B2) can be used alone or in combination. In this invention, "plate-like" includes not only plate-like shapes but also sheet-like, flake-like, and other shapes.

[0050] From the viewpoint of suppressing burrs generated during hole-making and further improving hole-making accuracy, the plate-shaped reinforcing material (B2) is a particle with a Mohs hardness of 1 to 5, preferably a particle with a Mohs hardness of 2 to 5, and more preferably muscovite.

[0051] From the viewpoint of further improving the machinability of cutting or parting parts for machining, or for drilling holes in the form of drill bits, the maximum diameter (long diameter) of the plate-shaped reinforcing material (B2) is preferably 1 μm to 20 μm, more preferably 1 μm to 10 μm. The minor diameter of the plate-shaped reinforcing material (B2) is preferably 0.5 μm to 20 μm, more preferably 0.5 μm to 10 μm. For convenience, the terms maximum diameter (long diameter) and minor diameter are used, but a shape where the maximum diameter (long diameter) and minor diameter are of equal length, i.e., square or nearly square, is also included in the category of plate-shaped. The thickness of the plate-shaped reinforcing material (B2) is preferably 0.05 μm to 2 μm, more preferably 0.05 μm to 1 μm. The aspect ratio (maximum diameter / thickness) of the plate-shaped reinforcing material (B2) is preferably 20 to 400, more preferably 50 to 300.

[0052] Regarding the maximum diameter (major diameter), minor diameter, thickness, and aspect ratio of the plate-like reinforcing material (B2), for example, multiple plate-like reinforcing materials (B2) can be photographed using a scanning electron microscope (SEM), their maximum diameter (major diameter), minor diameter, and thickness can be measured, and the values ​​can be calculated based on their average values. For example, by randomly selecting 300 plate-like reinforcing materials (B2) from the SEM images, the average major diameter obtained by summing all the maximum diameters (major diameters) and dividing by the number of images can be taken as the maximum diameter (major diameter) of the plate-like reinforcing material (B2), and the average minor diameter obtained by summing all the minor diameters and dividing by the number of images can be taken as the minor diameter of the plate-like reinforcing material (B2).

[0053] However, when it is difficult to determine the maximum diameter of the plate-shaped reinforcing material (B2), the average particle size of the plate-shaped reinforcing material (B2) can also be determined. From the viewpoint of further improving the machinability of cutting or cutting parts for machining, or for drilling holes in drill bits, the average particle size of the plate-shaped reinforcing material (B2) is preferably 0.01 μm to 25 μm, more preferably 0.05 μm to 20 μm.

[0054] The average particle size of the plate-like reinforcing material (B2) can be determined using laser diffraction-scattering. Specifically, the average particle size of the plate-like reinforcing material (B2) is the particle size at which the volume reference is accumulated to 50% of the particle size distribution (50% volume reference particle size), i.e., D. 50 (Median particle size). This volumetric baseline has a cumulative 50% particle size (D). 50 The particle size distribution is obtained based on volume, and the total volume is used as 100% in the cumulative curve. The number of particles is counted starting from the smallest particle size, and the particle size is measured when the cumulative value reaches 50%.

[0055] In addition, in order to further improve the dispersibility in the resin composition and further improve the adhesion with the thermoplastic resin (A), a treatment layer composed of a surface treatment agent may be formed on the surface of the reinforcing material (B).

[0056] As a surface treatment agent, there are no particular limitations, and examples include silane coupling agents and titanium coupling agents. Among them, silane coupling agents are preferred, and amino-based silane coupling agents, epoxy-based silane coupling agents, or alkyl-based silane coupling agents are more preferred. The above-mentioned surface treatment agents can be used alone or in combination of two or more.

[0057] Examples of amino-based silane coupling agents include N-2-(aminoethyl)-3-aminopropylmethyldimethoxysilane, N-2-(aminoethyl)-3-aminopropyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-ethoxysilyl-N-(1,3-dimethylbutylene)propylamine, N-phenyl-3-aminopropyltrimethoxysilane, and N-(vinylbenzyl)-2-aminoethyl-3-aminopropyltrimethoxysilane.

[0058] Examples of epoxy silane coupling agents include 3-epoxypropoxypropyl(dimethoxy)methylsilane, 3-epoxypropoxypropyltrimethoxysilane, diethoxy(3-epoxypropoxypropyl)methylsilane, triethoxy(3-epoxypropoxypropyl)silane, and 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane.

[0059] Examples of alkyl silane coupling agents include methyltrimethoxysilane, dimethyldimethoxysilane, trimethylmethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, n-propyltrimethoxysilane, isobutyltrimethoxysilane, isobutyltriethoxysilane, n-hexyltrimethoxysilane, n-hexyltriethoxysilane, cyclohexylmethyldimethoxysilane, n-octyltriethoxysilane, and n-decyltrimethoxysilane.

[0060] As a method for forming a treatment layer consisting of a surface treatment agent on the surface of the reinforcing material (B), existing known surface treatment methods can be used. Examples of methods for forming a treatment layer consisting of a surface treatment agent include, for instance, a wet method in which the surface treatment agent is dissolved in a solvent that promotes hydrolysis (e.g., water, alcohol, or a mixture thereof) to prepare a solution, and then the solution is sprayed onto the reinforcing material (B).

[0061] When treating the surface of the reinforcing material (B) with a surface treatment agent, there is no particular limitation on the amount of the surface treatment agent. In the case of a wet method, for example, a solution of the surface treatment agent can be sprayed in a manner that is 0.1 to 20 parts by mass relative to 100 parts by mass of the reinforcing material (B).

[0062] In the cutting component of the present invention, the particle shape of the reinforcing material (B) is not particularly limited. However, from the viewpoint of suppressing burrs generated during the hole-making process of the cutting component and further improving the hole-making accuracy, the reinforcing material (B) preferably contains any one of fibrous reinforcing material (B1) and plate-like reinforcing material (B2), and more preferably contains any one of fibrous reinforcing material (B1) with a Mohs hardness of 2 to 5 and plate-like reinforcing material (B2) with a Mohs hardness of 2 to 5. In this case, at least a portion of the surface of either the fibrous reinforcing material (B1) or the plate-like reinforcing material (B2) may also be covered by a treatment layer composed of a surface treatment agent.

[0063] In this invention, the content of reinforcing material (B) in 100% by mass of the total amount of the resin composition is preferably 0.1% to 60% by mass, more preferably 5% to 60% by mass, even more preferably 5% to 55% by mass, even more preferably 5% to 45% by mass, particularly more preferably 10% to 40% by mass, and most preferably 15% to 40% by mass.

[0064] By setting the content of reinforcing material (B) to the above range, it is possible to suppress the generation of burrs during the hole-making process of the cutting component and further improve the hole-making accuracy.

[0065] (Other additives) The resin composition used in this invention may also contain, without impairing its preferred properties, inorganic fillers (such as barium sulfate), colorants (such as titanium dioxide and carbon black), laser direct molding additives, conductive fillers (such as reinforcing material (B), antistatic agents, antioxidants, heat stabilizers, ultraviolet absorbers, light stabilizers, weathering agents, lightfastness agents, release agents, lubricants, flowability improvers, plasticizers, impact resistance improvers, flame retardants (such as phosphazene compounds, phosphate ester compounds, and condensed phosphate ester compounds), anti-drip agents, nucleating agents (such as micronized talc), dispersants, damping agents, neutralizing agents, anti-blocking agents, and other additives. These additives may be used individually or in combination of two or more.

[0066] As a colorant, there are no particular limitations as long as it can color the resin composition; examples include inorganic pigments, organic pigments, and dyes. From the viewpoint of further improving the heat resistance of machined parts, inorganic pigments are preferred as colorants. Examples of inorganic pigments include carbon black, titanium dioxide, zinc white, iron oxide, iron oxide pigments, ultramarine, cobalt blue, chromium oxide, titanium yellow, zinc-iron brown, spinel green, lead chromate pigments, cadmium pigments, copper-chromium black, and copper-iron black.

[0067] Examples of conductive fillers include: conductive carbon black, carbon fibers, and other carbon-based materials; materials made by coating the surface of inorganic fillers other than reinforcing materials (B) with conductive substances such as carbon or tin oxide / antimony oxide; and powders or fibers of iron, nickel, copper, silver, gold, aluminum, etc.

[0068] Examples of antistatic agents include: anionic antistatic agents such as sodium alkyl sulfonate, sodium alkylbenzene sulfonate, and alkyl phosphates; cationic antistatic agents such as phosphonium alkyl sulfonate, phosphonium alkylbenzene sulfonate, and quaternary ammonium compounds; nonionic antistatic agents such as polyoxyethylene derivatives, polyol derivatives, and alkylethanolamines; low-molecular-weight antistatic agents such as amphoteric antistatic agents such as polyoxyethylene derivatives, polyol derivatives, and alkylethanolamines; and high-molecular-weight antistatic agents such as polyethylene glycol methacrylate copolymers, polyetheramides, polyether esteramides, polyetheramide imides, polyepoxide copolymers, polyepoxide epichlorohydrin copolymers, and polyether esters. Among these, high-molecular-weight antistatic agents are preferred.

[0069] The amount of other additives is not particularly limited as long as it does not impair the preferred physical properties of the cutting component of the present invention. The amount of other additives is generally preferably 30% by mass or less, more preferably 10% by mass or less, and even more preferably 5% by mass or less, relative to 100% by mass of the total resin composition.

[0070] <Manufacturing Method for Parts Used in Cutting Processes> (Method for manufacturing resin composition) In the method for manufacturing the cutting component of the present invention, a resin composition is first manufactured. The resin composition is manufactured by heating and mixing (particularly melt mixing) a mixture containing a thermoplastic resin (A) and a reinforcing material (B), and other additives as needed. Melt mixing can be performed using a known melt mixing apparatus, such as a twin-screw extruder.

[0071] Specifically, the resin composition can be manufactured by the following methods: (1) premixing the components using a mixer (rotary drum mixer, Henschel mixer, etc.), melting and mixing them using a melt mixing apparatus, and then granulating them using a granulation means (granulator, etc.); (2) preparing a masterbatch of the required components, mixing other components as needed, melting and mixing them using a melt mixing apparatus, and then granulating them; (3) feeding the components to a melt mixing apparatus and granulating them, etc. The resulting granules can be made into granules or pellets using known methods.

[0072] There is no particular limitation on the processing temperature during melt mixing, as long as it is the temperature at which the thermoplastic resin (A) can melt. Typically, the barrel temperature of the melt mixing apparatus used for melt mixing is set to a temperature slightly higher than the melting point of the resin, adjusted to a range within which the resin composition can melt at the actual barrel temperature. In this way, a resin composition that achieves the desired effect can be produced.

[0073] (Manufacturing methods and applications of parts for machining) The obtained resin composition is molded using known resin molding methods such as injection molding, insert molding, compression molding, blow molding, blow forming, and extrusion molding, depending on the type, application, and shape of the target machining part (resin molded body). This allows the machining part of the present invention to be obtained. From the viewpoint of forming a molded body with a plate-like portion as described later, the molding method for the resin composition is preferably injection molding, compression molding, or extrusion molding, more preferably compression molding or extrusion molding, and even more preferably compression molding. Furthermore, in this case, the orientation of the thermoplastic resin (A) and the reinforcing material (B) can easily become random, allowing the machinability parameters to be adjusted to a more suitable range and further suppressing the generation of burrs. In addition, the molding method for the resin composition can also employ a combination of the above-described molding methods.

[0074] The cutting parts obtained by molding the resin composition have excellent heat resistance, dimensional stability, and machinability when cutting or cutting, or when making holes in drill bits, etc. In particular, they can suppress the generation of burrs during hole making and improve hole making accuracy.

[0075] Furthermore, the machining component obtained as described above satisfies the aforementioned machinability parameters. Moreover, these machinability parameters can be adjusted, for example, by changing the type or content of the thermoplastic resin (A) and reinforcing material (B) contained in the resin composition constituting the machining component, or by changing the molding method or molding conditions during manufacturing.

[0076] In this invention, the moisture content of the cutting component obtained as described above before cutting or cutting is preferably 0.01% to 1.00% by mass. The moisture content is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, and preferably 1.00% by mass or less, more preferably 0.50% by mass or less, and even more preferably 0.25% by mass or less.

[0077] From the viewpoint of addressing the increasing precision required for semiconductors and components, necessitating the forming of numerous precision holes through opening processes, the cutting component of the present invention is preferably a molded body having a plate-like portion. When the cutting component is a molded body with a plate-like portion, the shape of the molded body with the plate-like portion is preferably, for example, a portion of the molded body having a thickness exceeding 1.0 mm. Besides the plate-like portion (plate), it can also have shapes such as round bars, tubes, or irregularly shaped parts. From the viewpoint of the machinability of the cutting component, when the cutting component has a round bar shape other than a plate-like portion (plate), it is preferable that the diameter of the round bar shape portion exceeds 1.0 mm. Furthermore, when the cutting component has a tube shape other than a plate-like portion (plate), it is preferable that the wall thickness of the tube shape portion exceeds 1.0 mm. Furthermore, when the cutting component has an irregularly shaped portion other than a plate-like portion (plate), it is preferable that the thickest part of the irregularly shaped portion exceeds 1.0 mm. Here, an irregularly shaped portion refers to a portion having any cross-sectional shape different from that of a plate, round bar, tube, etc. When the irregularly shaped part is composed of thick-walled parts such as concave or convex shapes and thin-walled parts, from the viewpoint of machinability of the machined part, it is preferable that the thickness of the thin-walled part exceeds 0.5 mm. However, the machined part may of course also be composed of only a plate-shaped part (flat plate).

[0078] The cutting and machining components of this invention can produce various secondary molded products, such as resin components, by performing cutting, slitting, and drilling (machining). Specific applications in the electrical and electronic fields include: wafer carriers, wafer boxes, chucks, transport boxes, wafer boats, IC chip trays, IC chip carriers, IC delivery tubes, semiconductor inspection sockets (IC test sockets), aging test sockets, pin grid array sockets, quad flat packages, leadless chip carriers, dual in-line packages, small outline packages, tape and reel packaging, inspection fixtures for multilayer ceramic capacitors (MLCCs), various housings, storage trays, transport device components, and magnetic card readers.

[0079] The cutting component of the present invention is particularly suitable for devices using contact probe pins where the generation of burrs is the cause of malfunctions or where hole opening accuracy is required. It is especially suitable for use as a component with a plate-shaped portion in the manufacture of fixtures for semiconductor inspection.

[0080] Examples of devices that use such contact probe pins include semiconductor inspection fixtures such as semiconductor inspection sockets (IC test sockets), inspection fixtures for chip components such as multilayer ceramic capacitors (MLCCs), printed circuit board inspection fixtures, flexible printed circuit board inspection fixtures, TAB (Tape Automated Bonding) belt inspection fixtures, and semiconductor inspection fixtures such as wafer inspection probe cards.

[0081] <Instructions for use of cutting machining components> The cutting component of the present invention can be used, for example, in a method to suppress burr formation during hole-making of a plate-shaped object. In this method, by performing hole-making on the plate-shaped portion of the molded body having the plate-shaped portion, burr formation during hole-making can be suppressed. Furthermore, the cutting component of the present invention can also be used in a method to improve the hole-making accuracy during hole-making of a plate-shaped object. In this method, by performing hole-making on the plate-shaped portion of the molded body having the plate-shaped portion, the hole-making accuracy can be improved.

[0082] Example The present invention will be specifically described below based on embodiments and comparative examples, but the present invention is not limited thereto. The raw materials used in these embodiments and comparative examples are as follows.

[0083] <Raw materials> (Crystallized thermoplastic resin) Polyetheretherketone (PEEK) resin 1: Melt viscosity 2070 Pa·s (380℃, shear rate 122 sec) －1 Melting point 343℃, manufactured by VICTREX, trade name "PEEK450G" Polyetheretherketone (PEEK) resin 2: Melt viscosity 1520 Pa·s (380℃, shear rate 122 sec) －1 Melting point 343℃, manufactured by VICTREX, trade name "PEEK381G" Polyamide resin (semi-aromatic polyamide resin): Polyamide 9T resin, melt viscosity 140 Pa·s (350℃, shear rate 122 sec) －1 (Important: Melting point 306℃; Manufactured by KURARAY CO., LTD.; Trade name: "Genestar PA9T"; Grade name: "GC61210") (Inorganic reinforcing materials) Potassium titanate fiber: Fiber-like potassium titanate, average fiber length 15μm, average fiber diameter 0.5μm, Mohs hardness: 4, manufactured by Otsuka Chemical Co., Ltd., trade name "TISMO D102" Wollastonite fiber: average fiber length 9.3 μm, average fiber diameter 2.4 μm, aspect ratio 3.9, Mohs hardness: 4.5, manufactured by NYCO Materials, trade name "VISTAL K101" Titanium dioxide fiber: A material in which monoclinic titanium dioxide fibers are coated with a conductive substance composed of tin oxide / antimony oxide. Average fiber length: 12 μm; average fiber diameter: 0.4 μm; Mohs hardness: 5. Glass fiber: average fiber length 3mm, average fiber diameter 16μm, Mohs hardness: 6, manufactured by Nippon Electric Glass Co., Ltd., trade name "ECS03 T-717" Talc 1: Plate-shaped talc, average particle size 13μm, Mohs hardness 1, manufactured by Fuji Talc Industries, Ltd., trade name "Talc ML112S" Talc 2: Ultrafine talc powder, average particle size 0.85μm, Mohs hardness 1, manufactured by Talc Corporation of Japan, trade name "Talc SG2000" (Other additives) Colorant: A mixture of carbon black (50% by mass) and polyamide MXD6 (50% by mass), manufactured by Ota Chemical Co., Ltd., trade name "NB-35 Grain Black". (Determination of melt viscosity) Regarding the melt viscosity of polyetheretherketone (PEEK) resin, a shear rate of 122 sec was measured using a melt viscosity measuring device (manufactured by Toyo Seiki Co., Ltd., trade name "Capillograph 1D") at a temperature 380°C (37°C higher than the melting point of PEEK resin). －1 Under the specified conditions, the melt viscosity was determined using a 1.0 mm φ × 10 mm capillary rheometer.

[0084] Regarding the melt viscosity of the semi-aromatic polyamide resin, a melt viscosity measuring device (manufactured by Toyo Seiki Co., Ltd., trade name "Capillograph 1D") was used, and the shear rate was measured at a temperature (350°C) 44°C higher than the melting point of the semi-aromatic polyamide resin, with a value of 122 sec. －1 Under the specified conditions, the melt viscosity was determined using a 1.0 mm φ × 10 mm capillary rheometer.

[0085] (Determination of melting point and glass transition temperature) Regarding the melting point and glass transition temperature of polyetheretherketone (PEEK) resin and semi-aromatic polyamide resin, according to JIS-K7121, a differential calorimeter (manufactured by Hitachi High Technology Co., Ltd., trade name "DSC7000X") was used. 10 mg of sample was placed in an aluminum sample box for testing. Under a nitrogen flow of 100 ml / min, the temperature was increased from room temperature to 50°C at a rate of 10°C / min. After holding at 50°C for 5 minutes, the temperature was increased to 400°C at a rate of 10°C / min for measurement.

[0086] (Average fiber length, average fiber diameter, and aspect ratio) The average fiber length, average fiber diameter, and aspect ratio of potassium titanate fiber or wollastonite fiber were determined by scanning electron microscopy (SEM) on 300 randomly selected samples, and the average values ​​were calculated.

[0087] <Preparation of Resin Composition and Evaluation Samples> (Examples 1 to 7 and Comparative Examples 1 to 3) The resin compositions were melt-blended using a twin-screw extruder according to the proportions shown in Tables 1 and 2 to produce granules (resin compositions). The barrel temperature of the twin-screw extruder was 15°C to 40°C higher than the melting point of the thermoplastic resin.

[0088] The obtained granules were molded to form JIS test pieces and business card-shaped plates (test pieces) for measuring mechanical properties, load deformation temperature, fracture toughness, cutting resistance, and cutting time, thus producing evaluation samples (resin molded bodies) for machining parts. Regarding the molding method of the granules, injection molding was used in Examples 1, 2, and 7 and Comparative Examples 1 and 2. Compression molding was used in Examples 4-6. Extrusion molding was used in Examples 3 and Comparative Example 3. In injection molding, the barrel temperature of the molding machine was approximately 30°C higher than the melting point of the thermoplastic resin, and the mold temperature was approximately 30°C higher than the glass transition temperature of the thermoplastic resin. In compression molding, the mold temperature of the molding machine was approximately 30°C higher than the melting point of the thermoplastic resin, and after a certain heating and holding time, melt pressing was performed for 2 minutes under a 5t load. The removal temperature after cooling was approximately 50°C. In addition, during extrusion molding, the barrel temperature is approximately 30°C higher than the melting point of the thermoplastic resin, and the die temperature is approximately 60°C higher than the glass transition temperature of the thermoplastic resin. Furthermore, evaluation samples for compression-molded and extruded bodies are test pieces cut from sheet metal using a table saw. The dimensions of the evaluation samples are the same as those for injection-molded bodies. Hereinafter, evaluation samples of compression-molded and extruded bodies produced in this manner will also be collectively referred to as JIS test pieces.

[0089] <Evaluation> The evaluation samples (test pieces) or resin compositions prepared in Examples 1 to 7 and Comparative Examples 1 to 3 were evaluated as follows. The results are shown in Tables 1 and 2 below.

[0090] (Flexural strength, flexural modulus) According to JIS K7171, the bending strength and bending modulus of JIS test specimens (longitudinal: 10.1 mm, transverse: 110 mm, thickness: 4.1 mm) were determined by a three-point bending test with a fulcrum distance of 60 mm between the fulcrums using an Autograph AG-5000 (manufactured by Shimadzu Corporation).

[0091] (IZOD impact value) According to JIS K7110, the impact value of the notched cantilever beam (IZOD) test piece (longitudinal: 13mm, transverse: 63mm, thickness: 4mm) was determined.

[0092] (Melt viscosity) Regarding the melt viscosity of the resin compositions of Examples 1, 3-7 and Comparative Examples 1-3, a melt viscosity measuring device (manufactured by Toyo Seiki Co., Ltd., trade name "Capillograph 1D") was used at a shear rate of 122 sec. －1 The measurements were performed at a temperature of 380°C. Regarding the melt viscosity of the resin composition of Example 2, a melt viscosity measuring device (manufactured by Toyo Seiki Co., Ltd., trade name "Capillograph 1D") was used at a shear rate of 122 sec. －1 The measurements were performed at a temperature of 350℃.

[0093] (Load deformation temperature) Edge testing was conducted using an HDT measuring apparatus (manufactured by Toyo Seiki Co., Ltd., trade name "HDT.VSPT.TESTER S-3M") according to JIS K7191A, and the load deformation temperature (°C) was measured. Regarding the test conditions, a bending test piece (longitudinal: 10.1 mm, transverse: 110 mm, thickness: 4.1 mm) was used as a JIS test piece to measure the load deformation temperature. The load deformation temperature for each test piece was determined according to JIS K7191A (initial temperature set at 50°C, heating rate set at 120°C / h, load set at 1.8 MPa, and distance between support points set at 100 mm).

[0094] (Breakability K1c) For the JIS test specimens (longitudinal: 13 mm, transverse: 63 mm, thickness: 4 mm) of the examples and comparative examples, the fracture toughness K1c was determined using a fracture toughness measuring apparatus (manufactured by Shimadzu Corporation, trade name "Autograph AGS-J Mechanical Testing Machine") according to ASTM D5045-93. Fracture toughness K1c is a parameter representing the resistance to crack propagation; a higher value indicates higher fracture toughness.

[0095] (Machinability parameters) The machinability parameters defined by the following formula (1) are obtained based on the failure toughness K1c and flexural modulus of the evaluation sample.

[0096] Machinability parameter = (Failure toughness K1c / Flexural modulus) × 10 5 ・・・Form (1) (Cutting resistance and cutting time) The business card-shaped sheet material (longitudinal: 50 mm, transverse: 90 mm, thickness: 3 mm) of the embodiments and comparative examples was cut into 30 mm squares to make a flat plate for evaluating machinability.

[0097] In addition, a drill bit clamping fixture was manufactured for holding the drill bit (manufactured by SAITO SEISAKUSHO CO.,LTD., model "ADR-1.0") used for cutting evaluation. The manufactured drill bit clamping fixture has the following shape... Figure 1 As shown.

[0098] The above-mentioned machinability evaluation plate and drill bit clamp were mounted on a friction and wear testing machine (A&D Corporation, model "EFM-3-H"), and the cutting evaluation was started with a load of 1100g and a rotational speed of 0.3m / s. The cutting resistance and cutting time from the moment the drill bit entered the plate until it penetrated the plate were measured. At this time, the machinability evaluation plate was mounted on the rotating side, and the drill bit clamp was mounted on the stationary side.

[0099] Among them, samples that have not been pierced after more than 1 minute from the start of the cutting evaluation are marked as "not pierced" in the cutting time column of Table 2, and are considered as not preferred in terms of machinability evaluation.

[0100] (Amount of burrs generated) For the above-mentioned plate for evaluating machinability after measuring cutting resistance and cutting time, an optical microscope (Keyence, model "One-shot 3D Measurement Macro Microscope VR-3000") was used with the magnification set to 150x. In order to evaluate the hole opening accuracy after hole opening, the maximum length (long side) and the number of burrs generated around the hole after hole opening were visually observed.

[0101] As an evaluation criterion for the opening accuracy after hole processing, samples with no observed burrs (burr count: 0) were rated A; samples with a maximum burr length (long side) of less than 50 μm and a burr count of 1 were rated B; samples with a maximum burr length (long side) of more than 50 μm and a burr count of 1 were rated C; and samples with a maximum burr length (long side) of more than 50 μm and a burr count of 2 or more were rated D. The results are shown in Tables 1 and 2.

[0102] [Table 1] [Table 2] As shown in Tables 1 and 2, in the cutting components of Examples 1 to 7, the reinforcing material is an inorganic reinforcing material with a Mohs hardness of 5 or less, and the aforementioned cutting parameters are within 20 μm. 1／2 ~180m 1／2 Within this range, it can be confirmed that the machinability is excellent, with low cutting resistance and the ability to shorten cutting time, and the generation of burrs can be suppressed. In particular, it has been confirmed that the machinable parts of Examples 4 and 6, which are obtained by compression molding (press molding) of the resin composition, can particularly suppress the generation of burrs.

[0103] On the other hand, in the machining component of Comparative Example 1, the Mohs hardness of the reinforcing material is greater than 5, resulting in high cutting resistance and insufficient reduction of cutting time. Furthermore, in the machining component of Comparative Example 1, the maximum length (long side) of the burr exceeded 50 μm, and more than two burrs were observed. Additionally, in the machining component of Comparative Example 2, the aforementioned cutting parameters were greater than 180 μm. 1／2 No perforation was achieved under the aforementioned cutting conditions.

[0104] Thus, the cutting component of the present invention has excellent machinability and can suppress the generation of burrs during cutting. Therefore, it is suitable for devices using contact probe pins where burr generation is the cause of malfunction and where hole opening accuracy is required. It is particularly suitable for semiconductor inspection fixtures. Claims (as amended under Article 19 of the Treaty) 1. A component for cutting and machining, characterized in that, A molded body comprising a resin composition containing a thermoplastic resin (A) and a reinforcing material (B), The cutting component is a molded body with a plate-like portion. The thermoplastic resin (A) is a crystalline thermoplastic resin. The reinforcing material (B) is an inorganic reinforcing material with a Mohs hardness of less than 5. The cutting parameters of the component used for machining, defined by the following formula (1) based on the breaking toughness K1c and flexural modulus, are 20m. 1／2 ~180m 1／2 , Machinability parameter = (Failure toughness K1c / Flexural modulus) × 10 5 ・・・Style (1). 2. The cutting component as described in claim 1, characterized in that, The load deformation temperature (HDT) of the cutting component at a load of 1.8 MPa is above 150°C. 3. The cutting component as described in claim 1 or 2, characterized in that, The thermoplastic resin (A) is selected from at least one of polyphenylene sulfide resin, polyether aromatic ketone resin, polyamide resin and liquid crystal polymer. 4. The cutting component as described in claim 1 or 2, characterized in that, The aspect ratio of the reinforcing material (B) is 3 to 100. 5. The cutting component as described in claim 1 or 2, characterized in that, The reinforcing material (B) is a fibrous reinforcing material with an average fiber length of 1 μm to 300 μm. 6. The cutting component as described in claim 1 or 2, characterized in that, The reinforcing material (B) is at least one fiber selected from potassium titanate fiber, wollastonite fiber and titanium dioxide fiber. 7. The cutting component as described in claim 1 or 2, characterized in that, Of the total amount of the resin composition, 100% by mass, the content of the thermoplastic resin (A) is 20% to 95% by mass, and the content of the reinforcing material (B) is 5% to 55% by mass. 8. The cutting component as described in claim 1 or 2, characterized in that, The thermoplastic resin (A) is a polyether aromatic ketone resin, and the resin composition is subjected to a shear rate of 122 sec. －1 The melt viscosity at 380℃ is 1000 Pa·s to 2900 Pa·s. 9. The cutting component as described in claim 1 or 2, characterized in that, The thermoplastic resin (A) is a polyamide resin, and the resin composition is subjected to a shear rate of 122 sec. －1 The melt viscosity at 350℃ is 150 Pa·s to 260 Pa·s. 10. The cutting component as described in claim 1 or 2, characterized in that, It is an injection-molded, compression-molded, or extruded article of the resin composition containing the thermoplastic resin (A) and the reinforcing material (B). 11. The cutting component as described in claim 1 or 2, characterized in that, It is a compression molded body of the resin composition containing the thermoplastic resin (A) and the reinforcing material (B). 12. (Deleted). 13. The cutting component as described in claim 1 or 2, characterized in that, It is used for at least one of the following: semiconductor inspection sockets, wafer inspection probe cards, printed circuit board inspection fixtures, belt-type automatic bonding inspection fixtures, flexible printed circuit board inspection fixtures, and chip component inspection fixtures. 14. A method for manufacturing a cutting component as described in claim 1 or 2, characterized in that it comprises: A process for obtaining a machining component of a molded body having a plate-shaped portion by molding a resin composition containing the thermoplastic resin (A) and the reinforcing material (B). 15. A method of using a cutting component, characterized in that, In the method for manufacturing a cutting component according to claim 14, the plate-shaped portion of the cutting component obtained by molding the resin composition is subjected to hole-making.

Claims

1. A component for cutting and machining, characterized in that, A molded body comprising a resin composition containing a thermoplastic resin (A) and a reinforcing material (B), The thermoplastic resin (A) is a crystalline thermoplastic resin. The reinforcing material (B) is an inorganic reinforcing material with a Mohs hardness of less than 5. The cutting parameters of the component used for machining, defined by the following formula (1) based on the breaking toughness K1c and flexural modulus, are 20m. 1／2 ~180m 1／2 , Machinability parameter = (Failure toughness K1c / Flexural modulus) × 10 5 ・・・Style (1).

2. The cutting component as described in claim 1, characterized in that, The load deformation temperature (HDT) of the cutting component at a load of 1.8 MPa is above 150°C.

3. The cutting component as described in claim 1 or 2, characterized in that, The thermoplastic resin (A) is selected from at least one of polyphenylene sulfide resin, polyether aromatic ketone resin, polyamide resin and liquid crystal polymer.

4. The cutting component as described in claim 1 or 2, characterized in that, The aspect ratio of the reinforcing material (B) is 3 to 100.

5. The cutting component as described in claim 1 or 2, characterized in that, The reinforcing material (B) is a fibrous reinforcing material with an average fiber length of 1 μm to 300 μm.

6. The cutting component as described in claim 1 or 2, characterized in that, The reinforcing material (B) is at least one fiber selected from potassium titanate fiber, wollastonite fiber and titanium dioxide fiber.

7. The cutting component as described in claim 1 or 2, characterized in that, Of the total amount of the resin composition, 100% by mass, the content of the thermoplastic resin (A) is 20% to 95% by mass, and the content of the reinforcing material (B) is 5% to 55% by mass.

8. The cutting component as described in claim 1 or 2, characterized in that, The thermoplastic resin (A) is a polyether aromatic ketone resin, and the resin composition is subjected to a shear rate of 122 sec. －1 The melt viscosity at 380℃ is 1000 Pa·s to 2900 Pa·s.

9. The cutting component as described in claim 1 or 2, characterized in that, The thermoplastic resin (A) is a polyamide resin, and the resin composition is subjected to a shear rate of 122 sec. －1 The melt viscosity at 350℃ is 150 Pa·s to 260 Pa·s.

10. The cutting component as described in claim 1 or 2, characterized in that, It is an injection-molded, compression-molded, or extruded article of the resin composition containing the thermoplastic resin (A) and the reinforcing material (B).

11. The cutting component as described in claim 1 or 2, characterized in that, It is a compression molded body of the resin composition containing the thermoplastic resin (A) and the reinforcing material (B).

12. The cutting component as described in claim 1 or 2, characterized in that, It is a molded body with plate-like parts.

13. The cutting component as described in claim 1 or 2, characterized in that, It is used for at least one of the following: semiconductor inspection sockets, wafer inspection probe cards, printed circuit board inspection fixtures, belt-type automatic bonding inspection fixtures, flexible printed circuit board inspection fixtures, and chip component inspection fixtures.

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