JP4453439B2 - Manufacturing method of melting / solidifying work fixative - Google Patents

Description

  The present invention relates to a method for producing a melting / solidifying workpiece fixing agent that fixes a workpiece using its own melting and solidification.

  This type of melting / solidifying workpiece fixing agent fixes workpieces made of materials such as stainless steel, non-ferrous metals, ceramics, etc. that cannot use the magnetic workpiece fixing method, even in this case, especially thin plates and those that are weak and fragile. It is effective when used for machining such as cutting.

As such a machining method, for example, a machining method in which machining is performed while applying a coolant (working fluid) to a workpiece fixed to a fixing surface has been proposed, and a thin plate or a workpiece having a fragile shape is machined. As one of the work fixing methods when processing, there is a freezing chuck (for example, see Patent Document 1). In this product, for example, a silicon oil-based coagulant is used as the melting / solidifying type work fixing agent.
By the way, as a fixing agent for fixing a workpiece by utilizing such melting / solidification of a substance, various types of fixing agents are required depending on applications. Specifically, various things are required for the melting point, shape or size of the fixing agent. However, conventionally, since the number of the fixatives is small, there are disadvantages that the use is limited and the usability is poor.

  Therefore, in the present applicant, in Japanese Patent Application No. 2003-374597, two or more types of paraffin or two or more types of polyethylene glycol are mixed in an arbitrary ratio and adjusted to have a desired melting point. We are proposing a method for producing a melting / solidifying workpiece fixing agent.

  According to this prior application, in the case of paraffin or polyethylene glycol, the mixing ratio and the amount of change in melting point are almost proportional, so the mixing ratio of two or more paraffins with different melting points can be changed, or two or more polyethylene glycols with different melting points can be used. By changing the mixing ratio, a fixing agent having an arbitrary intermediate melting point can be produced. Therefore, various kinds of fixing agents having a melting point corresponding to the application can be produced.

  By the way, in the prior application, the mold for the melting / solidifying type work fixing agent is formed of tetrafluoroethylene [Teflon (registered trademark)] or formed by coating a metal with tetrafluoroethylene.

  Here, the use of ethylene tetrafluoride is to reduce the adhesive force between the mold and the workpiece fixing agent, but in practice, even if tetrafluoroethylene is used, the molding die and the fixing agent (paraffin) are used. And polyethylene glycol), a considerably large adhesive force is generated, which hinders the removal of the solidified fixing agent.

  As a result, in the prior application, a mold release agent such as a surfactant is applied to the surface of the molding space of the mold, and then a molten fixing agent (paraffin) is poured into the molding space of the mold. After cooling and solidifying, the solidified fixing agent is removed from the mold.

  For this reason, in the manufacturing method of the prior application, it is essential to apply a mold release agent to the mold, and the manufacturing cost of the melting / solidifying workpiece fixing agent increases accordingly.

  In view of the above points, an object of the present invention is to enable efficient production of a melting / solidifying workpiece fixing agent at a low cost without using a release agent.

In order to achieve the above object, the invention according to claim 1 is a method for producing a melting / solidifying work fixing agent (12) for fixing a work (13) by utilizing its own melting and solidification. ,
Fixative (12) consists of paraffin or polyethylene glycol,
Preparing a molding die (20) comprising a silicon rubber block having a plurality of through holes (21) forming a molding space for the fixing agent (12);
The mold (20) is placed on the upper surface of the metal table (22) so that the bottoms of the plurality of through holes (21) are in contact with the upper surface of the metal table (22).
After the fixing agent (12) is melted, a small amount is poured into the plurality of through holes (21). After the small amount of the fixing agent is solidified, the molten fixing agent (12) is filled in the plurality of through holes (21). The fixing agent (12) is cooled and solidified, and then the solidified fixing agent (12) is removed from the plurality of through holes (21) of the mold (20). Yes.

  In the present invention, paraffin or polyethylene glycol is used as the material of the melting / solidifying type work fixing agent (12). First, the work adhesive force (work fixing force) when solidified is large, and This is because the material is non-corrosive to metals and has a low environmental impact without concern for pollution.

  Second, paraffin or polyethylene glycol is practically easy to adjust the melting point to a range of 0 ° C. or more and less than 100 ° C., which is a temperature range in which melting and solidification operations are easy.

  By the way, according to the experimental study by the present inventors, the fixing agent (12) made of paraffin or polyethylene glycol is a workpiece made of a material such as stainless steel, non-ferrous metal, ceramics (a material in which the magnetic workpiece fixing method cannot be used). It was found that sufficient adhesive strength was exhibited for (13), but the adhesive strength for silicon rubber was greatly reduced.

  In other words, the adhesive force between the fixing agent (12) made of paraffin or polyethylene glycol and silicon rubber is the adhesive force between paraffin or polyethylene glycol and tetrafluoroethylene used in the mold of the previous application. It was found that it was significantly reduced (excellent peelability) compared to.

Therefore, in the invention described in claim 1, the molding die (20) is formed of a silicon rubber block having a plurality of through holes (21) forming a molding space for the fixing agent (12) . According to this, after the fixing agent (12) is cooled and solidified in the plurality of through holes (21) of the silicon rubber block of the molding die (20), the fixing agent (12) is removed from the molding die (20). When removing from the plurality of through holes (21), the adhesive force between the fixing agent (12) and the mold (20) is weak, so the fixing agent (12) is molded without using a release agent. It can be easily removed from the mold (20).

  As a result, the material cost of the release agent can be reduced, and the application cost of the release agent can be reduced.

  The silicon rubber as used in the present invention is a synthetic rubber having a siloxane bond (Si-O bond) in the main chain, the side chain of which is a methyl group, a part of which is substituted with a vinyl group, Examples include those introduced with a fluorinated alkyl group, those substituted with a phenyl group, and those substituted with a phenyl group and a vinyl group.

  Silicon rubber is excellent in heat resistance and chemical stability in addition to the excellent releasability. Since silicon rubber has heat resistance up to around 200 ° C., even when the fixing agent (12) is heated to a relatively high temperature (for example, around 80 ° C.) and melted, a mold made of silicone rubber ( 20) can be used repeatedly without any problem in heat resistance. In addition, since silicon rubber is excellent in chemical stability, there is no fear that a chemical reaction occurs between the silicon rubber and paraffin or polyethylene glycol.

In the first aspect of the present invention, since the entire mold (20) can be composed of a silicon rubber block , the mold (20) can be easily manufactured from a single material called silicon rubber.

In addition, according to the first aspect of the present invention , the molding space can be easily formed simply by forming the through hole (21) in the silicon rubber block. In addition, a plurality of fixing agents can be efficiently and simultaneously molded using a molding space composed of a plurality of through holes (21).

Furthermore, according to the first aspect of the present invention, the pedestal (22) with which the bottoms of the plurality of through holes (21) are in contact with each other is made of metal and has excellent thermal conductivity. The heat of the small amount of fixative (12) that is initially poured into can be rapidly released into the ambient atmosphere through the metal cradle (22), and the small amount of fixative (12) can be rapidly cooled and solidified.

  Therefore, the bottom portion of the through hole (21) can be rapidly closed by solidifying the small amount of the fixing agent (12) poured first. Thereby, it can prevent reliably that the melt | dissolved fixing agent (12) poured after that leaks outside from the bottom part of a through-hole (21).

  Moreover, since the mold (20) is merely placed on the upper surface of the metal stand (22), the cooling mold (20) can be moved without any operation after the cooling and solidification of the fixing agent (12) is completed. It can be separated from the metal stand (22) as it is. Therefore, the work of removing the cooled and solidified fixing agent (12) from the through hole (21) can be performed very easily.

As in the second aspect of the present invention, in the method for manufacturing a melting / solidifying work fixing agent according to the first aspect, the plurality of through holes (21) are specifically circular in cross section and are cylindrical. A shaped molding space may be formed.
According to a third aspect of the present invention, in the method for producing a melting / solidifying workpiece fixing agent according to the first or second aspect, the silicon rubber block has a rectangular parallelepiped shape, and a plurality of through holes (21). May be arranged along a rectangular parallelepiped side.
In invention of Claim 4, it is a manufacturing method of the fusion | melting and solidification type work fixing agent (12) which fixes a workpiece | work (13) using melting and solidification of itself,
Fixative (12) consists of paraffin or polyethylene glycol,
A mold (20) comprising a metal block (20a) having a plurality of through holes (21) forming a molding space for the fixing agent (12) is prepared,
The inner wall surfaces of the plurality of through holes (21) are covered with silicon rubber (20b),
The mold (20) is placed on the upper surface of the metal table (22) so that the bottoms of the plurality of through holes (21) are in contact with the upper surface of the metal table (22).
After the fixing agent (12) is melted, a small amount is poured into the plurality of through holes (21). After the small amount of the fixing agent is solidified, the molten fixing agent (12) is filled in the plurality of through holes (21). The fixing agent (12) is cooled and solidified, and then the solidified fixing agent (12) is removed from the plurality of through holes (21) of the mold (20). Yes .
According to invention of Claim 4, even if a shaping | molding die (20) is comprised with a metal block (20a), the fixing agent shape | molded in a metal block (20a) and a some through-hole (21) Since silicon rubber (20b) is interposed between the fixing agent (12) and the fixing agent (12) and the forming die when the fixing agent (12) is removed from the plurality of through holes (21) of the forming die (20). The adhesive force between (20) becomes weak. As a result, the fixing agent (12) can be easily removed from the through hole (21) of the mold (20) without using a release agent. For this reason, while being able to reduce the material cost of a mold release agent, the application cost of a mold release agent can be reduced.
According to the invention described in claim 4, as in the invention described in claim 1, a plurality of fixing agents can be efficiently and simultaneously formed using a forming space formed of a plurality of through holes (21). Furthermore, since the stand (22) with which the bottom part of a some through-hole (21) contacts is metal, and is excellent in heat conductivity, a small amount of fixing agents (the first poured into the through-hole (21) ( The heat of 12) can be rapidly released through the metal cradle (22) into the ambient atmosphere to quickly cool and solidify the small amount of fixative (12).
Therefore, the bottom portion of the through hole (21) can be rapidly closed by solidifying the small amount of the fixing agent (12) poured first. Thereby, it can prevent reliably that the melt | dissolved fixing agent (12) poured after that leaks outside from the bottom part of a through-hole (21).

  In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The melting / solidifying type work fixing agent is used for fixing a work (workpiece) to a fixed base in machining or the like, but in this embodiment, a coolant ( It is used as a fixing agent in a machining method in which machining is performed while applying a machining fluid.

  FIG. 1 is a diagram schematically showing the entire processing apparatus used in the machining method according to the present embodiment. FIG. 2 is an enlarged perspective view showing the vicinity of the workpiece fixing base 14 in FIG.

The apparatus shown in FIG. 1 mainly includes a coolant storage part A for storing the coolant 19 and a work processing part B for fixing and machining the work 13 so that the coolant 19 circulates between these parts A and B. It is what has become.

Here, the coolant 19 is circulated by a coolant hose 8 having a coolant suction port 6 and a coolant return port 7 using a circulation pump (not shown).

In FIG. 1, a throw-in cooler body 1 is a general-purpose device having a cooling pipe 2 and is configured as a coolant cooling device that cools a coolant 19. The cooling pipe 2 is thrown into the coolant tank 5, and the coolant 19 in the coolant tank 5 can be cooled by controlling the temperature of the cooling pipe 2 by the main body 1.

This throw-in cooler body 1 is provided with a water temperature sensor 3. The water temperature sensor 3 monitors the temperature of the coolant 19 in the coolant tank 5, and the water temperature sensor 3 and the throw-in cooler body 1 work together to keep the coolant 19 at a set temperature. .

The coolant tank includes a coolant first settling tank 4 and a coolant second settling tank 5 partitioned by a partition wall.

In the coolant first settling tank 4, the coolant containing the shavings after processing is supplied to the coolant return port 7.
In this case, the coolant is cleaned by filtering the coolant with a filter (not shown) or by allowing the shavings to settle on the bottom of the coolant first settling tank 4.

The supernatant liquid of the coolant 19 cleaned in the coolant first settling tank 4 flows into the coolant second settling tank 5 over the partition wall.

Then, the coolant 19 in the second settling tank 5 is kept at room temperature, and in some cases, is cooled to the room temperature or below by the coolant cooling devices 1 and 2, sucked from the coolant suction port 6, and turned to the workpiece processing part B again. The

Thus, the coolant storage part A is a throw-in cooler body 1 as a coolant cooling device.
And a cooling pipe 2, a water temperature sensor 3, and both sedimentation tanks 4 and 5.

  The workpiece processing part B has a processing machine main body 9. A rotating grindstone 11 having a grindstone cover 10 for preventing danger is provided on the processing machine body 9, and a work 13 is fixed to a work fixing base 14 via a fixing agent 12. Here, although not particularly limited, the workpiece 13 may be a thin plate made of a material such as stainless steel, non-ferrous metal, or ceramic, or a material that is weak and easily broken.

  The workpiece fixing base 14 constitutes a surface for fixing the workpiece 13 and is moved by the table 15 back and forth and right and left during workpiece processing. Here, the workpiece 13 fixed to the workpiece fixing base 14 via the fixing agent 12 is subjected to cutting with the rotating grindstone 11 while applying the coolant 19, and the chips are removed by the coolant 19.

  A coolant receiver 16 is provided below the workpiece fixing base 14 and the table 15 so that the coolant 19 flows down during the processing.

Further, the coolant 19 supplied from the coolant storage part A through the coolant hose 8 to the work processing part B is sprayed from the coolant spraying port 17 attached to the coolant hose 8 and sprinkled on the work 13. . The amount of coolant 19 flowing out from the coolant spraying port 17 is controlled by a coolant opening / closing cock 18.

As described above, the workpiece processing part B is substantially constituted by the processing machine main body 9, the grindstone cover 10, the rotating grindstone 11, the work fixing base 14, the table 15, the coolant receiver 16, the coolant spraying port 17, and the coolant opening / closing cock 18. ing.

And as above-mentioned, between the coolant storage part A and the workpiece processing part B, the coolant 19
The coolant 19 sucked from the coolant suction port 6 in the storage part A passes through the coolant hose 8 and passes through the coolant spraying port 17 to the workpiece processing part B.
The coolant is returned to the storage unit A from the coolant return port 7.

  Here, the fixing agent 12 for fixing the workpiece 13 to the workpiece fixing base (fixing surface) 14 is different depending on whether the coolant 19 used for machining is at room temperature or below. The normal temperature is a room temperature of about 20 to 30 ° C., for example, 25 ° C.

When using coolant at room temperature, it is machined with coolant 19 mainly composed of water at room temperature, so there is no need to cool the coolant, and the throwing cooler body 1 and the cooling pipe 2 and the water temperature sensor 3 as a coolant cooling device are It does not have to be activated.

That is, this method has an advantage that the equipment cost and the setup time for the throw-in cooler body 1 can be saved. Further, this method is not only simple and does not require a cooling device, but also has an advantage that warping and dimensional errors of the workpiece 13 (product) are small because it is processed at room temperature.

Since the coolant 19 is at room temperature, the fixing agent 12 should of course be selected from those having a melting point above room temperature. Specifically, a melting point of 30 ° C. or higher, preferably 40 ° C. or higher is selected. At the same time, considering the convenience of washing the fixing agent 12 adhering to the work 13 with water, the melting point is preferably 100 ° C. or less.

In this way, when machining using a normal temperature coolant, the fixing agent 12 having a melting point equal to or higher than the above-described normal temperature is used, and the workpiece 13 is solidified on the workpiece fixing base (fixing surface) 14 by solidification of the fixing agent 12. Fix it.

Naturally, since these fixing agents 12 are solid at room temperature, the work 13 is fixed as follows. First, the fixing surface is heated above the melting point of the fixing agent 12 by, for example, applying warm air from a dryer to the work fixing base 14, and the solid fixing agent 12 is disposed on the fixing surface to form a molten state. The work 13 is placed on the work fixing base 14.

  Thereafter, the workpiece fixing base 14 is returned to room temperature to solidify the fixing agent 12, whereby the workpiece 13 is fixed on the workpiece fixing base 14. At this time, a room temperature coolant 19 may be sprinkled around the work fixing base 14 in order to return to room temperature. However, in order to prevent the molten fixing agent 12 from flowing, the coolant 19 is not sprinkled on the work fixing base 14 itself, but sprinkled on the table 15 around the work fixing base 14.

  After that, in the processing apparatus shown in FIG. 1, machining can be performed without any problem using the room temperature coolant 19. That is, in the present embodiment, when using the coolant 19 at room temperature, it is not necessary to cool the workpiece fixing base 14 or the coolant 19.

  On the other hand, when a coolant having a temperature below room temperature is used, the coolant 19 needs to be cooled because it is machined with a coolant 19 at room temperature or below. Machining is performed with 3 in the activated state.

The fixing agent 12 suitable for this case is selected from those having a melting point between 0 ° C. and room temperature. Specifically, a melting point of 0 ° C. or higher and 20 ° C. or lower is selected.

  Naturally, the fixing agent 12 is in a molten state at room temperature, that is, in a liquid state. Since the temperature of the aqueous coolant 19 used at this time is between 0 ° C. and the melting point of the fixing agent 12, the fixing agent 12 can be solidified by the cooling action of the coolant 19, and the coolant spraying to the workpiece 13 is stopped. Then, the fixing agent 12 melts. Therefore, the coagulant 12 can be easily removed by flowing it together with the coolant 19.

Thus, when machining using a coolant having a normal temperature or lower, the above-described fixing agent 12 having a melting point of 0 ° C. or higher and a normal temperature or lower is used, and the workpiece 13 is placed on the workpiece fixing base (fixing surface) 14.
And a molten liquid fixative 12 is placed. Then, coolant 19 at room temperature or lower
Is used to solidify the fixing agent 12 to fix the work 13 to the work fixing base 14 before machining.

  Specifically, the workpiece fixing base 14 and the fixing agent 12 are attached to the fixing agent 12 by sprinkling the coolant 19 below the room temperature around the workpiece fixing base 14 so that the liquid fixing agent 12 does not flow. Cool to below the melting point to solidify the fixative 12. As a result, the workpiece 13 can be fixed, and thereafter, machining can be performed without any problem using the coolant 19 at room temperature or lower.

Thus, in the machining method described above, the fixing agent 12 is required to have a melting point corresponding to the operating temperature, and the fixing agent 12 as a solid material also has a shape and size corresponding to the shape of the workpiece. Obviously, it is preferable from the viewpoint of workability and the like.

  The melting / solidifying workpiece fixing agent 12 satisfying such requirements can be obtained by mixing two or more kinds of paraffins in an arbitrary ratio or by mixing two or more kinds of polyethylene glycol in an arbitrary ratio. It can be adjusted to have a melting point of

  Next, the manufacturing method of the fixing agent 12 according to the present embodiment will be specifically described by way of examples.

Example 1
FIG. 3 is a view showing a molding die 20 of the fixing agent 12 used in Example 1, and the molding die 20 is constituted by a rectangular parallelepiped block made of silicon rubber. A plurality of, specifically six, through holes 21 are formed in a line in the rectangular parallelepiped block. The through hole 21 forms a cylindrical molding space for molding the fixing agent 12.

  Here, in Example 1, trade name “SR-70” manufactured by Tigers Polymer Co., Ltd. is used as silicon rubber. The silicone rubber having the trade name “SR-70” corresponds to “JIS K 6380 GEH7233”. The silicon rubber of this product name “SR-70” was measured for changes in hardness, tensile strength and elongation after heating at 225 ° C. for 70 hours. The rate of change with respect to the above can be kept to a slight value, and has sufficiently high heat resistance as compared with general synthetic rubber.

  Further, the specific dimensions of the mold 20 are exemplified by height H = 100 mm, width W = 300 mm, depth L = 50 mm, and diameter D of the through hole 21 = 20 mm.

  The cradle 22 on which the mold 20 is placed is composed of a rectangular plate member, and the material of the cradle 22 is made of metal, and more specifically, aluminum or the like is suitable. The specific material of the fixing agent 12 used in Example 1 is paraffin having a melting point of 75 ° C.

  Hereinafter, the manufacturing method of the fixing agent 12 according to Example 1 will be described in detail. The mold 20 is placed on the upper surface of the metal mounting table 22 as shown in FIG. 3 and the bottom of the through hole 21 is placed on the metal mounting table 22. Contact the top surface of

  Next, paraffin (fixing agent 12) heated to the melting point or higher and melted is poured into each of the six through holes 21 in small amounts. Here, the “small amount” is preferably about 1/10 or less of the total volume of the through hole 21.

  This small amount of molten paraffin contacts the upper surface of the metal table 22 at the bottom of each through hole 21. Since the cradle 22 is made of metal having excellent heat conductivity, a small amount of paraffin heat can be rapidly released into the ambient atmosphere through the metal cradle 22 to rapidly cool and solidify the small amount of paraffin. it can.

  The bottom of the through hole 21 can be rapidly closed by solidifying the small amount of paraffin that is poured first. Thereafter, the melted paraffin is poured into each of the plurality of through holes 21 until it is full, and the melted paraffin is naturally cooled and solidified.

  When the solidification of the molten paraffin is completed, the molding die 20 is removed from the metal mounting table 22, and both ends in the penetration direction of the through holes 21 of the molding die 20 are held by hand, and the molding die 20 formed of silicon rubber is slightly twisted. .

  Here, since the adhesive force between the paraffin and the silicon rubber is considerably low, the contact portion between the inner wall surface of the through hole 21 and the solidified paraffin can be easily peeled off by this twisting. Therefore, the solidified paraffin can be easily removed from the through hole 21 of the mold 20 by simply pressing one end of the solidified paraffin.

  As described above, a plurality of rod-shaped (columnar) fixing agents 12 having a diameter of 20 mm and a length of 100 mm can be efficiently manufactured simultaneously.

  In addition, when manufacturing the fixing agent 12 of another kind (other melting | fusing point), the mold 20 is heated more than melting | fusing point of the fixing agent 12 manufactured last time, and the inner wall surface of the through-hole 21 with cloth (clothes). By wiping, etc., dirt on the mold 20 can be easily removed. Therefore, a plurality of types of fixing agents 12 can be manufactured using the same mold 20.

  Note that positioning means for positioning the mold 20 on the upper surface of the metal placing table 22 may be provided on the metal placing table 22 side.

(Example 2)
In the first embodiment, an example in which the entire mold 20 is formed of a silicon rubber block has been described. In the second embodiment, as shown in FIG. 4, the base body 20a of the mold 20 is formed of a metal block such as aluminum. In the metal base body 20a, the inner wall surface of the through hole 21 is covered with a cylindrical silicon rubber 20b.

  Also in Example 2, the manufacturing method of the fixing agent 12 may be the same as in Example 1. Even if the mold 20 is configured as in the second embodiment, the solidified paraffin contacts the silicon rubber 20b, so that the solidified paraffin can be easily removed from the through hole 21 of the mold 20 as in the first embodiment. Can do.

(Example 3)
In Example 1, although the example which uses a paraffin as the fixing agent 12 was demonstrated, Example 3 uses polyethylene glycol as the fixing agent 12. FIG. More specifically, polyethylene glycol having a melting point of 55 ° C. is used as the fixing agent 12.

  As the mold for molding this polyethylene glycol, either the mold 20 of Example 1 shown in FIG. 3 or the mold 20 of Example 2 shown in FIG. 4 may be used. In Example 3, the method for producing the fixing agent 12 may be the same as that in Example 1.

  Since the adhesive force between polyethylene glycol and silicone rubber is as small as the adhesive force between paraffin and silicone rubber, the solidified polyethylene glycol is also used in the through hole of the mold 20 in Example 3. 21 can be easily removed.

It is a partial cross section schematic block diagram of the machining apparatus using the fixing agent manufactured by the method of this invention. It is an expansion perspective view which shows the vicinity part of the workpiece | work fixing stand in FIG. It is a perspective view which shows the shaping | molding die by Example 1 of this invention method. It is sectional drawing of the shaping | molding die by Example 2 of this invention method.

Explanation of symbols

  12 ... Fixing agent, 20 ... Mold, 21 ... Through hole, 22 ... Metal stand.

Claims (4)

A method for producing a melting / solidifying workpiece fixing agent (12) for fixing a workpiece (13) using its own melting and solidification,
The fixing agent (12) is made of paraffin or polyethylene glycol,
Preparing a molding die (20) comprising a silicon rubber block having a plurality of through holes (21) forming a molding space of the fixing agent (12);
The mold (20) is placed on the upper surface of the metal cradle (22) so that the bottoms of the plurality of through holes (21) are in contact with the upper surface of the metal cradle (22),
After the fixing agent (12) is melted, a small amount is poured into the plurality of through holes (21), and after the small amount of the fixing agent is solidified, the molten fixing agent ( 12) is poured until it is full, the fixing agent (12) is cooled and solidified, and then the solidified fixing agent (12) is removed from the plurality of through holes (21) of the mold (20). A method for producing a melting / solidifying work fixing agent, characterized in that The method for producing a melting / solidifying workpiece fixing agent according to claim 1, wherein the plurality of through holes (21) have a circular cross section and form a cylindrical forming space . The silicone rubber block is made a rectangular parallelepiped shape, the plurality of through holes (21) is melted according to claim 1 or 2, characterized in that it is arranged so as to be aligned along the rectangular sides -Manufacturing method of solidification type work fixing agent. A method for producing a melting / solidifying workpiece fixing agent (12) for fixing a workpiece (13) using its own melting and solidification,
The fixing agent (12) is made of paraffin or polyethylene glycol,
Preparing a molding die (20) comprising a metal block (20a) having a plurality of through holes (21) forming a molding space for the fixing agent (12);
The inner wall surface of the plurality of through holes (21) is covered with silicon rubber (20b),
The mold (20) is placed on the upper surface of the metal cradle (22) so that the bottoms of the plurality of through holes (21) are in contact with the upper surface of the metal cradle (22),
After the fixing agent (12) is melted, a small amount is poured into the plurality of through holes (21), and after the small amount of the fixing agent is solidified, the molten fixing agent ( 12) is poured until it is full, the fixing agent (12) is cooled and solidified, and then the solidified fixing agent (12) is removed from the plurality of through holes (21) of the mold (20). A method for producing a melting / solidifying work fixing agent, characterized in that

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