KR100658657B1 - Methode and device of processing inside diameter for bolt trimming dies - Google Patents

Abstract

An apparatus and a method for machining the inner diameter of a bolt trimming dice are provided to improve the surface hardness of the dice by machining the ununiform inner diameter of the dice, thereby improving the quality of a machined bolt. An apparatus for machining the inner diameter of a bolt trimming dice includes a rotation section(110), a machining support section(120), and a machining section(130). A machining dice(131) including a machining surface on the outer diameter side is formed by inserting the machining dice into a plurality of radial engagement holes formed in the machining support section. An inclined surface is formed on the side opposite to an inclined surface of a rotational shaft on the inner side with which the rotational shaft makes contact with.

Description

Internal processing device for bolt trimming dies and method thereof {Methode and Device of Processing Inside Diameter for Bolt Trimming Dies}

1 is a block diagram showing a general trimmer.

2 is a configuration diagram showing an operation state of a general trimmer.

Figure 3 is a perspective view showing the form according to the trimming die manufacturing process used in a general trimmer.

Figure 4 is an exploded perspective view showing a bolt trimming inner diameter factory value according to the present invention.

5 is a cross-sectional view showing a state in which the bolt trimming die inner working apparatus according to the present invention is installed.

6 is an operation diagram showing a state in which the inner diameter of the bolt trimming die according to the present invention is inserted into the trimming die as the inner diameter portion.

7 is an operation diagram showing a state in which the inner diameter of the bolt trimming die according to the present invention is installed as the inner diameter portion of the trimming die.

8 is an operation view showing a state in which the processing die is fixed to the inner diameter portion of the trimming die for processing the inner diameter of the bolt trimming die according to the present invention.

9 is a process chart showing the inner diameter processing method of the bolt trimming die according to the present invention.

* Explanation of symbols for main parts of drawings *

1: Trimming die before processing 2: Internal diameter part

3: finished trimming 100: processing equipment

110: rotating portion 111: rotating shaft

112: inclined surface 113: fixture

114: rotary support 115: rotary core rod

120: processing support 121: support body

122: insertion hole 123: insertion inclined portion

124: engagement hole 125: bearing insertion groove

126: bearing 127: seating hole

128: bearing fixture 130: machining

131: machining dice 132: round part

133: machining surface 134: inclined surface

The present invention relates to a bolt trimming die inner diameter processing apparatus and a method thereof, and more particularly, the inner diameter of the trimming die used to machine the outside on the head of the hexagonal bolt to be processed by the inclination angle while moving the rotating shaft tapered to a certain slope By fixing and releasing the inner diameter to be processed by the die, the non-uniform inner diameter is trimmed to improve the die surface hardness, improving the quality of the bolt to be processed, reducing the quantity of defects, and suppressing wear and rust on the inside. Provided are a bolt trimming die internal processing apparatus and a method thereof.

In general, bolts refer to mechanical elements used to fix building materials or mechanical parts. Screws are round rods, usually with a head.

The head is usually hexagonal, but it is also used in the shape of square, cylinder, and dish.

The most widely used is through bolts, which are bolted into the holes of the fasteners and then clamped with nuts. If the through-hole cannot be drilled, tap bolts, which are screwed into the holes and screwed in with bolts, nuts, stud bolts that are pre-planted and fastened to the outside, and machines are installed on the foundation concrete. There is a kind of foundation bolt used when doing so.

These bolts are usually forced, and are referred to as finishing bolts, semi-finishing bolts, black skin bolts, and the like, depending on the degree of surface finish. There are also bolts made of brass or light alloy.

As mentioned above, the load applied to the threaded portion of the bolt includes a case where a load and a torsion are applied in the axial direction, a shear load, a shock load and a static load in the axial direction, and the like. .

 As such, during the manufacturing process of the hex head bolt which is most used among the bolts, the foreign matter generated at each corner of the hexagon during the hexagonal molding is removed through a trimmer to remove the foreign matter generated at the hexagonal edges. .

As described above, a general trimming machine for surface treatment of the head of the hexagon bolt has been disclosed in Korean Utility Model Application No. No. 1993-362, which will be described with reference to FIGS. 1 and 2.

The bolt semi-finished product 13 is clamped on the fixing tool 12 by the clamp driving device, and then punched by the punch 11 by the bolt flap removal device of the present invention to the hexagonal mold 14 on the side. As the bolt flap 13 'portion is separated while the bolt semi-finished product 13 passes, the driving of the bolt flap removing apparatus will be described in more detail; With the driving of the connecting rod 1 connected to the crankshaft, the bearing 4 arranged at the end of the inclined surface 2 ′ of the pushing cam 2 connected thereto is connected to push the inclined surface 5 ′ of the vertical cam 5. Therefore, the vertical cam (5) is a state in which the upper end is blocked by the adjustment bolt (8) is to perform a constant angular movement to the side. Therefore, the pusher 9 elastically installed with the spring 10 at the tip of the vertical cam 5 is pushed to the side, so that the pusher 9 and the punch 11 connected to the side perform a slide movement, The rear end will be punched out.

The general trimming device as described above is to process the head of the bolt by pushing the bolt semi-finished product into the hexagonal mold, and the hexagonal mold is called the trimming dice. do.

 As shown in FIG. 3, the trimming die, which is a tool for trimming the head of the bolt, is pressurized to the front surface in a state in which a hexagonal tool is inserted into the trimming dice before machining in a cylindrical shape, as shown in FIG. 3. By forming the front surface of the hexagonal shape is configured to perform the surface treatment while the hexagonal bolt passes through the front portion, the inner diameter of the trimming dice before processing is a machining portion for processing the hexagonal bolt.

 As described above, the trimming dice for processing the hexagon bolts are difficult to machine on the inner diameter of the hexagon bolts, and are manufactured in a rough state, so that the hexagonal heads of the bolts pass through the trimming dice during bolt processing. There was a problem that the finished surface is non-uniform, not able to produce high quality hexagon bolts.

In addition, as the trimming die for processing the hexagon bolt is processed without the internal diameter of the internal processing portion being trimmed, the surface hardness is not constant within the processing portion, so that the bolt that is inserted under strong pressure and the surface treatment is repeatedly inserted. If the hardness is not constant, breakage occurs in the weak part and should be replaced. If the replacement time is missed, there is a problem that the productivity is greatly reduced by producing bad bolts.

In addition, the trimming die for processing the hexagon bolt is to be manufactured with a high hardness to process the hexagonal bolt of the force, there was a problem that economic loss is caused when the damage and breakage occurs due to the difficulty in manufacturing and processing.

The main object of the present invention devised to solve the above problems is to process the inner surface with a machining die that is fixed and released while moving the tapered rotary shaft to the inner diameter before machining the trimming dice for processing the head of the hexagon bolt. The uniformity of the surface reduces the number of defective bolts and increases the service life by suppressing wear and rust.

As such, the inner diameter processing apparatus and method of the bolt trimming die of the present invention devised to achieve the object is to form a fastener to prevent the departure to one side, and the rotating core rod connected to rotate with the rotary support for supporting the rotation to the other side A rotating part formed to be connected to a rotating shaft having an inclined surface formed therein so as to enlarge a diameter from one side to the other side, and a rotating part formed so that the rotating shaft provided with an inclined surface is rotated on the rotating core rod, and an insertion hole having a hole shape to be inserted into the rotating shaft of the rotating part Inserted inclined portion is formed in the front surface of the supporting body, the processing support portion formed in the center of the support body in the form of a plurality of long-hole coupling holes, and inserted into the plurality of radially coupled coupling holes formed in the processing support portion to the outer diameter side A working die with a working surface is formed, and the rotating shaft contacts the working die. It is characterized in that it comprises a processing unit formed so as to be detachable as feed to form an inclined surface in a direction opposite to the rotation axis of the inclined surface to the inside.

In addition, the processing support portion forms a bearing insertion groove having a small diameter on the rear side of the support body, forms a bearing on the outside of the bearing insertion groove, and the rear of the bearing with a bearing fixture provided on the rear side of the bearing. Forming a seating hole with a large diameter on the outer side of the support body while fixing the, characterized in that configured to settle the trimming dice before processing to process into the processing dice of the processing unit.

In addition, the processing unit is characterized in that configured to minimize the impact when the rotating processing die is formed by forming a round-shaped round portion at the front end of the cutting die in contact with the inner diameter portion of the trimming die before processing.

The inner diameter processing method of the bolt trimming die of the present invention is a workpiece fixing step of fixing the trimming die to process the inner diameter portion of the trimming dice before processing, and the deviation from one side to the inner diameter portion of the trimming dice before processing fixed in the workpiece fixing step. Inserting the processing device by inserting the fixing device formed to prevent the processing device inserting step, and the rotation formed on the other side of the rotating shaft in the state of inserting the rotating shaft formed with the inclined surface so that the diameter is expanded from the fixture formed on one side to the other side in the processing device insertion step Rotating the rotating core rod is supported by the support sphere is inserted into the rotary shaft and the processing support unit coupled to the processing unit is rotated in conjunction with the rotation, while the processing unit is rotated in the processing unit rotation step when inserting the rotating portion support to form the inclined portion in the front Diameter of the rotating shaft rotated as the body retracts Step of contacting the machining section where the rounded part contacts the inner diameter part of the trimming dice before processing as the machining dice coupled to the coupling holes formed in the radial direction of the supporting body protrude while the inclined surfaces of the machining dice having the opposite slopes interact with each other. And, the processing die which is contacted while rotating the trimming dice in the contacting step of the processing unit, while the round portion is in contact with the continuous progress while minimizing the processing impact, the inclined surface of the rotating shaft and the inclined surface of the processing die in the opposite direction to the maximum protrusion range Is fixed to the rear end of the supporting body at the end of the support body in a fixed state of the processing die which is rotated in a fixed state, and in the fixed state where the processing die protrudes to the maximum protrusion range in the fixed die fixing step. Rotate the machining die in the seated position And an inner diameter machining step for processing the inner diameter part, and a machining completion step for disassembling along the inclined surface of the rotating shaft after retreating the rotating part when the inner diameter machining step is finished. It features.

Thus, look at the preferred embodiment of the bolt trimming die of the present invention configured with reference to the drawings as follows.

4 is a perspective view showing a state in which the bolt trimming die inner diameter processing apparatus according to the present invention is installed, Figure 5 is a cross-sectional view showing a state in which the bolt trimming die inner diameter processing apparatus according to the present invention is installed, Figure 6 is a bolt according to the present invention Fig. 7 is an operation diagram showing a state in which the inner diameter of the trimming die is inserted into the trimming die in the inner diameter portion, Figure 7 is an operation diagram showing a state in which the inner diameter of the bolt trimming die is installed in the trimming die in the inner diameter portion. 8 is an operation diagram showing a state in which the machining die is fixed to the inner diameter portion of the trimming die and the machining process of the bolt trimming die according to the present invention, and FIG. 9 is an inner diameter machining of the bolt trimming die according to the present invention. It is a process chart which shows a method.

4 to 9, the inner diameter processing apparatus 100 of the bolt trimming die of the present invention has one side of the rotating shaft 111 which is inserted into the inner diameter portion 2 of the trimming dice 1 before processing to rotate. And a processing support part 120 having a supporting body 121 having a rotating part 110 formed to enlarge the diameter to the other side, and an insertion hole 122 inserted into the rotating shaft 111 of the rotating part 110. The processing unit 130 for processing the inner diameter portion 2 by forming a plurality of processing dice 131 radially to enlarge the outer diameter while transporting the rotating shaft 111 is fixed to the processing support portion 120 is expanded diameter Consists of including.

The rotating part 110 forms a fixture 113 to prevent the departure to one side, and forms a rotating core rod 115 connected to rotate with the rotary support 114 for supporting the rotation to the other side diameter from one side to the other side The inclined surface 112 is formed to be connected to the rotating shaft 111 formed so as to be enlarged so that the rotating shaft 111 provided with the inclined surface is rotated by the rotation core rod 115.

The processing support part 120 forms an insertion inclination part 123 on the front surface of the support body 121 having a through hole insertion hole 122 so as to be inserted into the rotation shaft 111 of the rotation part 110, and the support body. It is configured to form a plurality of coupling holes 124 in the form of a plurality of long holes in the center of the (121).

Here, the processing support portion 120 forms a bearing insertion groove 125 of the groove shape having a small diameter toward the rear side of the support body 121, and forms a bearing 126 to the outside of the bearing insertion groove 125, The rear end of the bearing 126 is fixed with a bearing fixing tool 128 provided at the rear of the bearing 126 to form a seating hole 127 with a large diameter on the outer side of the support body 121 to form the processing part 130. It is preferable to configure so that the trimming dice 1 before processing with the processing dice 131 of the settle.

The processing unit 130 is inserted into a plurality of radially coupled coupling holes 124 in the processing support unit 120 to form a processing die 131 having a processing surface 133 to the outer diameter side, the processing die 131 The inclined surface 134 is formed in a direction opposite to the inclined surface 112 of the rotating shaft 111 to the inner side where the rotating shaft 111 is in contact with and configured to be detached and transported.

Here, the processing unit 130 is a machining die that rotates by forming a round-shaped round portion 132 on the front end of the cutting die 1 to the inner diameter portion 2 of the trimming dice 1 before the machining die 131 It is desirable to configure 131 to minimize impact upon contact.

Thus, looking at the inner diameter processing method of the bolt trimming dice of the present invention configured as follows.

First, one side of the inner diameter part 2 of the pre-processing trimming die 1 fixed in the workpiece fixing step S1 of fixing the trimming die 1 to process the inner diameter part 2 of the trimming die 1 before processing. Insert the processing device 100 into the inner diameter part 2 of the trimming die 1 before processing in the processing device inserting step (S2) of inserting the processing device 100 by inserting the fixture 113 formed to prevent separation. do.

In this way, the rotary support 114 formed on the other side of the rotary shaft 111 in a state in which the rotary shaft formed with the inclined surface 112 is inserted in the processing apparatus insertion step (S2) from the fixture 113 formed on one side to enlarge the diameter to the other side. When the rotary core rod 115 is rotated to be inserted into the rotary shaft 111, the processing support unit 120 coupled with the processing unit 130 is interlocked to rotate the processing support unit 120 in the processing unit rotation step (S3). Rotate the processing unit 130 supported by the.

As described above, when the processing unit 130 is rotated in the processing unit rotation step (S3) to insert the rotating unit 110, the rotating shaft 111 is rotated while retracting the support body 121 having the insertion inclination unit 123 formed on the front surface. Round part as the processing die 131 coupled to the coupling hole 124 formed in the radial direction of the support body 121 protrudes while the inclined surfaces of the processing die 131 having the inclination opposite to the inclined surface of the support body 121 are protruded. The machining die 131 of the inner diameter part 2 of the trimming die 1 before the machining is in contact with the machining part contact step S4 in which 132 is in contact with the inner diameter part 2 of the trimming die 1 before the machining. Start processing.

Thus, the machining die 131 is rotated in contact with the trimming dice (1) in the processing unit contact step (S4) is the rounded portion 132 is in contact with the inclined surface 112 of the rotating shaft 111 by continuing to advance while minimizing the impact ) And the machining die 131 rotates in the opposite direction while the machining die 131 protrudes to the maximum protrusion outer diameter in the processing die fixing step S5 in which the outer diameter is expanded and rotated in a fixed state while acting in the opposite direction. It is fixed to 111.

As described above, the contact end of the trimming dice 1 before processing is fixed to the rear of the support body by the bearing 126 in the state in which the processing dice 131 protrudes to the maximum protrusion range and is fixed in the processing dice fixing step S5. The trimming die 1 before the machining is seated in the seating hole 137 in the inner diameter machining step (S6) of processing the inner diameter part 2 by rotating the processing die 131 in a state seated in the seating hole 127 that has been installed. The inner diameter portion 2 is processed by protruding the processing die 131 to the maximum in a state where it is made.

Thus, after finishing the processing in the inner diameter machining step (S6) the machining die 131 mounted while retreating the rotating unit 110 is dismantled along the inclined surface 112 of the rotary shaft 111 to complete the machining step (S7) When the machining of the inner diameter part 2 of the trimming dice 1 before processing is completed), the machining die 131 fixed to the rotating shaft 111 is dismantled to finish the machining.

As such, the inner diameter processing apparatus and method of the bolt trimming dice of the present invention configured to rotate to form a fastener on one side and to be coupled to the rotating body on the other side to process the inner diameter of the trimming dice for machining the surface at each corner of the hexagonal bolt Forming a support and a rotating core rod to form a support body inserted into the insertion hole provided in the through-hole in the rotating shaft formed in the inclined surface so that the diameter is expanded from one side to the other side in a constant slope, and a constant slope on the front portion of the support body Forming an inclined insertion portion of the support body, to form a plurality of through-hole coupling radially in the center of the support body, and to combine the settling seating the trimming die with a bearing formed in the rear of the support body, the coupling hole of the support body The rotating shaft and the half inside the processing die which formed the rounded part on the front surface to form the processing surface outside. When the machining die coupled to the supporting body by forming an inclined surface in the direction corresponding to the inclined surface of the machining dice formed along the inclined surface of the rotating shaft, protrudes to the maximum protrusion range to the outside, and processes the inner diameter part of the inserted trimming dice and finishes the machining. The surface hardness of the inner diameter is separated by the side of the fixed part along the rotation axis by friction, and the surface of the inner diameter part is processed after trimming die is manufactured by trimming dice, and the bolt is processed evenly on each side while passing through the uniform trimming dice. To improve the effect.

In addition, the inner diameter processing apparatus and method of the bolt trimming die of the present invention corresponds to the machining dice coupled to the support body while the diameter is increased when a constant pressure is applied while the rotary shaft having the inclined surface is inserted into the inner diameter of the trimming dice before processing. When the inclined surface is interacted and protrudes and gradually rises, the inner diameter is processed, and it gradually rises by the pressure at the insertion position, and is primarily processed in the rounded portion, and when it reaches a certain position, the maximum angle at which the machining die protrudes is transferred to the rotating shaft. By trimming the surface to the inner diameter while projecting and rotating, by performing the finishing operation while wearing the surface a plurality of times in sequence, thereby improving the hardness of the surface and uniformity of the surface roughness provides an effect of improving the reliability of the product.

In addition, the inner diameter processing apparatus and method of the bolt trimming die of the present invention, the inclined surface formed on the inner surface of the processing dice for processing the inner diameter portion of the trimming dice before processing and the inclined surface formed so that the diameter of the rotating shaft rotated in the opposite direction to each other Formed to be easily engaged and dismantled, it is processed quickly and the angle of machining increases and decreases according to the inclination of the inclined surface in order to minimize the roughness of the surface due to rapid machining, thereby producing high-quality trimming dice to improve productivity. It provides an effect.

In addition, the internal diameter processing apparatus and method of the bolt trimming die of the present invention is to process the process while gradually increasing the diameter of the processing die to the inclined portion formed in the inner diameter of the processing surface is formed in the inner diameter portion of the trimming dice before processing By improving the hardness and minimizing the surface roughness and processing with trimming dice, it is possible to continuously produce the hexagonal surface of the hexagon bolts with accurate and good surface condition. Provides the effect of improving productivity.

In addition, the inner diameter processing apparatus and method of the bolt trimming die of the present invention is rotated by forming a seating hole coupled to the bearing to the other side of the support body coupled to the processing die of the processing device for trimming the inner diameter of the trimming dice before processing While supporting the processing dies, the trimming dies are settled while setting the insertion position of the processing dice rotated by seating the trimming dice, thereby stably surface machining is performed, thereby providing an effect of improving productivity.

Claims (4)

Forming a fastener 113 to prevent departure to one side, and forming a rotating core rod 115 connected to rotate with the rotary support 114 for supporting the rotation to the other side inclined surface 112 to expand the diameter from one side to the other side Rotating portion 110 is formed to be connected to the rotating shaft 111 is formed to rotate the rotating shaft 111 provided with the inclined surface in the rotary core rod 115 is rotated, Insertion inclination portion 123 is formed in front of the support body 121 having a through hole insertion hole 122 to be inserted into the rotary shaft 111 of the rotating part 110, in the center of the support body 121 A processing support part 120 having radially coupled coupling holes 124 in the form of a plurality of holes, Inserted into a plurality of radially coupled coupling holes 124 to the processing support portion 120 to form a machining die 131 having a machining surface 133 to the outer diameter side, the rotating shaft 111 on the machining die 131 The inner diameter of the bolt trimming die comprising a machining part 130 formed to be detached while being transported by forming the inclined surface 134 in a direction opposite to the inclined surface 112 of the rotating shaft 111 to be in contact with the inside. Processing equipment. The method of claim 1, The processing support part 120 forms a bearing insertion groove 125 having a small diameter groove shape toward the rear side of the support body 121, and forms a bearing 126 on the outside of the bearing insertion groove 125. Processing of the processing unit 130 by forming a seating hole 127 with a large diameter on the outer side of the support body 121 while fixing the rear portion of the bearing 126 with the bearing fixing tool 128 provided at the rear side to the outside of the 126. An inner diameter machining apparatus for a bolt trimming die, characterized in that the trimming die (1) to be machined by the die (131) is settled. The method of claim 1, The processing unit 130 forms a round-shaped round part 132 on the front end of the processing die 131 to which the inner diameter part 2 of the trimming die 1 contacts before processing, thereby rotating the processing die 131. ) Is an internal diameter processing apparatus of the bolt trimming dice, characterized in that configured to minimize the impact on contact. A workpiece fixing step S1 for fixing the trimming die 1 to process the inner diameter portion 2 of the trimming dice 1 before processing; Inserting the processing device inserting the processing device 100 by inserting the fastener 113 formed to prevent the departure on one side into the inner diameter portion 2 of the trimming dice (1) fixed in the workpiece fixing step (S1) (S2) and, In the processing device insertion step (S2) to the rotary support 114 formed on the other side of the rotary shaft 111 in the state in which the rotary shaft formed with the inclined surface 112 is inserted so that the diameter is expanded from the fixture 113 formed on one side to the other side. Is supported and rotates the rotating core rod 115 is inserted into the rotary shaft 111, the processing unit rotating step (S3) and the processing support unit 120 coupled to the processing unit 130 is interlocked and rotated, When the processing unit 130 is rotated in the processing unit rotation step (S3) and the rotating unit 110 is inserted, the inclined surface of the rotating shaft 111 is rotated while the support body 121 having the insertion inclination unit 123 formed on the front side retreats. While the inclined surfaces of the processing die 131 having the opposite inclination interact with each other, the processing die 131 coupled to the plurality of coupling holes 124 formed in the radial direction of the support body 121 protrudes and the round part 132. Process part contact step (S4) is in contact with the inner diameter portion 2 of the trimming dice (1) before processing, In the processing unit contact step (S4), the processing dice 131 which is in contact with the trimming dice 1 while rotating is inclined surface 112 of the rotating shaft 111 by continuously advancing while minimizing the processing impact while the round part 132 is in contact. And working dies fixed step (S5) and the rotating work in the fixed state while the inclined surface of the working dice 131 is expanded in the opposite direction to the maximum protrusion range, In the processing die fixing step (S5) in the state in which the processing die 131 is protruded to the maximum projection range fixed, the contact end of the trimming dice 1 before processing is fixed to the rear of the support body by the bearing 126 in the seating hole Inner diameter machining step (S6) for processing the inner diameter portion 2 by rotating the machining die 131 in the state settled in (127), After finishing the processing in the inner diameter processing step (S6), the processing die 131 mounted while retreating the rotating unit 110 is dismantled along the inclined surface 112 of the rotating shaft 111 to complete the processing (S7) Inner diameter processing method of the bolt trimming dice, characterized in that the configuration including.

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