JP2009028887A - Manufacturing device of shaft for cutting tool having cemented carbide tip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing device of a shaft for a cutting tool. <P>SOLUTION: The manufacturing device of the shaft for a cutting tool comprises a device body, a shaft supplying means for sequentially supplying the shafts toward a central welding zone of the device body, a cemented carbide tip supplying means for sequentially supplying cemented carbide tips toward the central welding zone of the device body, a welding means mounted to the central welding zone of the device body for welding the cemented carbide tips to tips of the shafts, a means for primarily applying flux to the tips of the shafts, a means for supplying welding tips on the flux, a means for secondarily supplying the flux to upper parts of the welding tips, a first clamp device for conveying the shafts transported by the shaft supplying means to the welding means, a second clamp device for conveying the cemented carbide tips transported by the cemented carbide tip supplying means to the welding means to make the tips welded to the tips of the shafts, and a means for examining the welding state of the shaft attached with the cemented carbide tip having the cemented carbide tip welded thereto by the welding means and discharging the shaft from the device body. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an apparatus for manufacturing a shaft for a cutting tool having a carbide tip.

  Generally, there are various cutting tools and cutters as cutting tools, and these tools are used by being mounted on a cutting machine tool such as a lathe, a milling machine, or a boring machine. Cutting tools such as tools, cutters, drills, reamers, tabs, and hobbs vary in type and form depending on the purpose of use.

  In such a cutting tool, a drill, a reamer, a tab, or the like is a cylindrical shaft. Initially, carbon steel was mainly used as a material for cutting tools, but it was later replaced with high-speed steel having excellent physical strength. In addition, recently, the cutting tool of high-speed steel is replaced with cemented carbide. Since a cemented carbide is difficult to process and expensive, a cemented carbide tip is usually welded to the tip of a main shaft such as carbon steel.

  By using a cutting tool having such a cemented carbide tip, a workpiece such as manganese steel or chill cast iron, which has been difficult to cut, can be easily cut. Further, since the tip does not become dull even in high-temperature processing at 1,000 ° C., it can be used at a cutting speed that is 20 times faster than carbon steel and 4 times faster than high-speed steel.

  In order to manufacture a cutting tool having such a carbide tip, a shaft made of a material such as carbon steel, which is softer than the carbide tip, is first prepared. Next, a cemented carbide tip is welded and attached to one end of the shaft, and then the cemented carbide tip is processed according to the shape of the required cutting tool to complete the cutting tool.

  That is, the cutting tool shaft as described above is produced manually or by a mechanical device. In the case of producing by hand, the surface contact portion is welded and welded to each other while these ends are brought close to each other while the shaft and the carbide tip are fixed using a jig. On the other hand, when producing by a mechanical device, when an operator individually supplies a shaft and a cemented carbide tip, the mechanical device electrically heats and welds the shaft and the tip of the cemented carbide tip. These welding tips usually use silver (Ag).

  However, the manufacturing process of the shaft for a cutting tool as described above is a primitive manual operation or semi-automatic method, that is, the operator must control and operate the material supply and the operation of the staged device. Therefore, productivity is lowered and quality cannot be stably maintained. In other words, when relying on manual work, the worker has to grip the rose shaft and carbide tip by hand and weld them together, so productivity is very low, but labor costs are very high. Economical.

  Further, a shaft manufactured only by the operator's naked eye or welding technique is very disadvantageous in terms of quality safety, and it is difficult to continuously produce a shaft for a cutting tool having a high-quality carbide tip. In addition, since the shaft using the mechanical device performs only a simple process such as welding by the mechanical device, the operator must always input or supply the shaft and the carbide chip individually.

  Furthermore, since the welding tip and the flux application process for performing welding cannot be performed using a mechanical device unless precedent by the operator, the work is very troublesome and inefficient. There is.

  In particular, the cemented carbide tip-attached shaft (hereinafter abbreviated as carbide tool) manufactured as described above has a poor weld appearance and deteriorates the merchantability, and must be subjected to another load cell test process for inspecting the welded part. Therefore, productivity and quality are reduced by the movement and transportation of many processes and materials.

  Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a novel and improved shaft for a cutting tool having a carbide tip capable of manufacturing a carbide tool in a large amount. It is to provide a manufacturing apparatus.

  In order to solve the above problems, according to an aspect of the present invention, an apparatus main body, and a shaft supply unit that is attached to one side of the apparatus main body and sequentially supplies a shaft toward a central welding area of the apparatus main body, A cemented carbide tip supplying means for sequentially supplying cemented carbide tips to the central welding area of the apparatus body, and a cemented carbide chip attached to the central welding area of the apparatus body. Welding means for welding to the tip of the shaft, which is an attachment site, first flux supply means for applying a primary flux to the tip of the shaft, welding tip supply means for supplying a welding tip on the flux, and an upper portion of the welding tip A second flux supply means for supplying secondary flux to the first and a first clamping device for gripping and transferring the shaft conveyed by the shaft supply means to the welding means A second clamping device that grips the cemented carbide tip conveyed by the cemented carbide tip supply means, transfers the cemented carbide tip to the welding means and welds it to the tip of the shaft, and welds the cemented carbide tip by the welding means. A cutting tool shaft comprising: an inspection discharge means for pulling out a carbide tool, which is a cemented carbide tip attachment shaft, inspecting a welding state, and discharging the inspected carbide tool from the apparatus main body. A manufacturing apparatus is provided.

  The shaft supply means includes a first vibration discharge device having a first spiral groove formed therein and a first spiral groove that is moved, and a predetermined interval from a discharge end portion of the first spiral groove of the first vibration discharge device. A first track guide, which is spaced apart and gradually moves in a row toward a central welding area of the main body of the apparatus body, the shaft being fed from the first spiral groove by driving the first vibration ejecting apparatus; A rotating unit mounted on one end of the first track guide so as to be rotated at right angles so as to drop the shaft moving through the guide downward, the rotating unit corresponding to the shaft moving through the first track guide; When the shaft that moves along the first track guide is inserted into the guide hole of the rotating unit, the rotating unit is at a right angle. The inserted shaft rotate while guiding hole may be dropped vertically downwardly.

A first position where a shaft insertion guide groove is aligned with a discharge end of the first spiral groove of the first vibration discharging device between the first vibration discharging device and the first track guide; A movable block disposed so as to reciprocate between a second position where the guide groove is aligned with the entry end of the first track guide, and the movable block is moved between the first position and the second position. A first cylinder that reciprocates between the second cylinder, a second cylinder that is mounted on one side of the first vibration ejector, a third cylinder that is mounted at the tip of the load of the second cylinder and that has a vertical operating shaft, and a guide It further includes a direction detection sensor S that detects the forward and reverse directions of the shaft in the groove,
When the shafts in the guide grooves detected by the direction detection sensor S are arranged in the forward direction, the first cylinder is driven to move the movable block to the second position where the guide grooves and the grooves of the first track guides coincide. When the second cylinder is operated by lowering the vertical operation shaft of the third cylinder in the state of being moved to the position, the shaft positioned in the guide groove is supplied into the groove of the first track guide, and the direction If the shafts in the guide grooves detected by the detection sensor S are arranged in the opposite direction, the vertical operation shaft is lowered by the operation of the third cylinder to bring the tip into close contact with the shaft, and then the operation of the second cylinder. The reverse shaft in the guide groove may be discharged to the first vibration discharging device side by moving the third cylinder backward.

  The cemented carbide chip supply means is connected to a second vibration ejecting device having a second spiral groove in which a cemented carbide chip is inserted and moved, and a second end of the second vibration ejecting device connected to the second spiral ejecting device. A second track guide for supplying a cemented carbide tip moving along the groove to a central welding area of the apparatus main body, and the cemented carbide chip is driven by the second vibration ejecting device so that the cemented carbide chip is a groove of the second spiral groove and the second track guide. May move progressively in a line through.

  The cemented carbide tip supplying means further includes a downward bending guide tube at one end of the second track guide, and the cemented carbide tip moving along the second track guide enters the guide tube and passes through the guide tube. You may fall.

  The welding means comprises a heating wire having a welding ring wound in a circle when viewed from above, and the shaft provided from the shaft supply means is positioned below the welding ring, and the cemented carbide tip. When the cemented carbide tip provided from the supply means is positioned on the upper side of the welding ring, the cemented carbide tip is placed on the vertical shaft by the flux at the tip of the shaft melted by the high-temperature heat emitted from the welding ring and the welding tip. It may be welded to the tip.

  A third clamp device is disposed between the welding means and a first clamp device that grips the shaft from the shaft supply means and grips the shaft on which flux application and welding tips have been applied, and the third clamp device is a shaft. A clamper that grips the clamper, a cylinder that moves the clamper up and down, and an actuator that horizontally moves the third clamp device. After the shaft moved by the first clamp device is moved to the clamper of the third clamp device, The cylinder and the actuator may be positioned below the welding means.

  A fourth clamp device is disposed below the welding means so as to be movable up and down. The fourth clamp device 1 includes a clamper that holds a shaft and a cylinder that lifts and lowers the clamper, and is supplied by the third clamp device. The shaft may be maintained at a standby position where welding can be performed while being held by the clamper of the fourth clamping device.

  On the lower side of the fourth clamping device 1, a lifting means for receiving a cemented carbide bite that has been welded from the fourth clamping device is disposed, and the lifting means has a retracting shaft having a receiving groove whose one end is opened, It includes a lower elevating cylinder that moves the protruding and retracting shaft up and down, and a fixed cylinder is disposed on the upper side of the protruding and retracting shaft. A cemented carbide tool may be fixed.

  The welding tip supply means includes a winding roll around which a belt-like welding tip band is wound, a punch that cuts the welding tip band into a predetermined size to form a welding tip, and a lower cylinder that moves the punch up and down. , A horizontal transfer cylinder that horizontally moves the cut welding tip to the shaft side, an adsorption table that adsorbs the cut welding tip, and a lifting cylinder that lowers the adsorption table and places the welding tip on the tip of the shaft .

  The first flux supply means and the second flux supply means may be moved up and down by an elevating cylinder.

  The first clamping device may include a clamper that holds a lower stage of the shaft discharged from the shaft supply means, and a servo motor that horizontally moves the clamper toward a central welding area of the device main body.

  A vertical guide tube disposed between the shaft supply means and the first clamping device, one end is connected to the first track guide, and the other end is disposed below the guide tube to provide the guide. It may further include a base that supports the shaft falling through the tube to prevent further dropping.

  The second clamping device may include a clamper that holds a lower stage of the carbide tip discharged from the carbide tip supply means, and an actuator that horizontally moves the clamper.

  A fifth clamp device for raising and lowering the carbide tip up and down is disposed at a tip end portion where the second clamp device moves. The fifth clamp device includes a clamper for holding the carbide tip and the clamper up and down. And a lifting cylinder that moves the carbide tip to the welding means side.

  The inspection discharge means includes a sixth clamp device that takes out a welded carbide tool from a receiving groove of a retractable shaft, and a sixth clamp device that grips a lower stage of the carbide tool when the clamp of the sixth clamp device is released. A seventh clamping device disposed at a lower portion, an inspection device for inspecting a welding state of the cemented carbide tool fixed by the seventh clamping device, and a carbide tool inspected by the inspection device from the seventh clamping device. You may include the taking-out apparatus to take out and the collection | recovery apparatus which sorts and collects the cemented carbide bite discharged | emitted by the said taking-out apparatus into a non-defective product and a defective product.

  The sixth clamping device is attached to the center of the entire surface of the apparatus main body so as to be slidable back and forth toward the welding means, and the sixth clamping device is provided with a clamper for gripping the welded carbide tool, An actuator for sliding the actuator may be included.

  The seventh clamp device may include a clamper that is disposed below the sixth clamp device and grips a lower stage of the carbide tool, and a lifting cylinder 1 that moves the clamper up and down.

  The inspection device includes a load cell that is mounted on one side of the seventh clamp device and presses the carbide tool, and an inspection cylinder that operates the load cell, and the side of the carbide tool fixed on the seventh clamp device is the load cell. The welding state of the cemented carbide tool may be inspected by comparing the pressure acting on the load cell with a reference value.

  When the inspection by the inspection device is completed, the take-out device releases the carbide tool from the seventh clamp device, and simultaneously discharges the carbide tool on the seventh clamp device to one side by discharging high-pressure air. Also good.

  The recovery device includes a discharge pipe whose tip is positioned close to one side of the extraction device, and the discharged carbide tool is dropped into the discharge pipe, and a spiral tube is disposed below the discharge pipe. Is connected to the lower side of the spiral tube, and a sorting cylinder for sorting and supplying the cemented carbide bite to the collection box is mounted, and the lower position of the spiral tube can be changed by the operation of the sorting cylinder. By doing so, the cemented carbide tool falling through the discharge pipe and the spiral pipe may be sorted into a non-defective product and a defective product and collected in the collection box.

  As described above, according to the cutting tool shaft manufacturing apparatus according to the present invention, it is possible to automatically produce a large amount of cemented carbide tools in which a cemented carbide tip is welded to the tip.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  FIG. 1 is a front view illustrating the entire cutting tool shaft manufacturing apparatus according to the present embodiment, and FIG. 2 is a plan view illustrating the entire cutting tool shaft manufacturing apparatus according to the present embodiment.

  The cutting tool shaft manufacturing apparatus according to the present embodiment includes an apparatus main body 1, a shaft supply unit 10 that is attached to one side of the apparatus main body 1 and sequentially supplies the shaft 2 toward the central welding area of the apparatus main body 1; A cemented carbide tip supply means 20 that is mounted on the other side of the apparatus main body 1 and sequentially supplies the cemented carbide tips 3 toward the central welding area of the apparatus main body 1; Welding means 30 for welding 3 to the tip of the shaft 2 which is a tip mounting part, first flux supply means 50 for applying a primary flux to the tip of the shaft 2, and a welding tip for supplying the welding tip 4 on the flux A supply means 40; a second flux supply means 60 for supplying secondary flux to the upper portion of the welding tip 4; and a welding means for gripping the shaft 2 conveyed by the shaft supply means 10 A first clamp device 70 for transferring to 0, and a second clamp for holding the cemented carbide tip 3 conveyed by the cemented carbide tip supply means 20 and transferring it to the welding means 30 to be welded to the tip of the shaft 2 The carbide tool 5 which is a carbide chip attachment shaft to which the carbide chip 3 is welded by the apparatus 80 and the welding means 30 is pulled out to inspect the welding state, and the inspected carbide tool 5 is discharged from the apparatus body 1. Inspection discharge means 90.

  More specifically, a shaft supply means 10 for continuously supplying a shaft 2 that is a work of a certain size is provided on one side of the apparatus main body 1. The shaft supply means 10 includes a first vibration discharge device 12 having a first spiral groove 11 that serves as a discharge path for discharging the shaft 2. When power is applied to the first vibration ejector 12, vibration is generated while the operation is started, and the shaft 2 in the first vibration ejector 12 moves gradually along the first spiral groove 11 due to the vibration. While being discharged.

  A first track guide 13 is attached to the discharge end portion of the first spiral groove 11 toward the central welding area of the apparatus main body 1. With the first track guide 13 inclined downward, the shaft 2 positioned in a row in the first track guide 13 is gradually moved by the vibration transmitted from the first vibration ejecting device 12 to the first track. It moves along the guide 13 and is discharged.

  At this time, as shown in FIG. 3A, a movable block 17 having a shaft 2 insertion guide groove 16 is mounted in a boundary area where the first spiral groove 11 and the first track guide 13 are in contact with each other. The end portion of the first spiral groove 11 and the end portion of the first track guide 13 are disposed so as to be displaced from each other. When the movable block 17 moves forward along the longitudinal direction toward the first vibration ejecting device 12, the shaft 2 in the first vibration ejecting device 12 enters the guide groove 16 of the movable block 17 through the first spiral groove 11. Next, when the movable block 17 on which the shaft 2 is mounted retreats toward the first track guide 13 side, the guide groove 16 and the groove formed in the first track guide 13 coincide with each other. The shaft 2 is supplied by entering the groove of the first track guide 13.

  Movement of the movable block 17 in the front-rear direction is performed by the first cylinder 18. In addition to the first cylinder 18, the shaft manufacturing apparatus according to the present embodiment is attached to the second cylinder 18 'mounted on one side of the first vibration ejecting apparatus 12, and the tip of the load of the second cylinder 18'. The second and third cylinders 18 ′ and 18 ″ are in the reverse direction of the shaft 2, that is, the shaft 2 mounted in the guide groove 16 of the movable block 17 is the first spiral. It detects that it returns to the groove 11 and discharges and removes it.

  That is, as shown in FIG. 3B, when the shaft 2 transferred from the first spiral groove 11 is positioned in the guide groove 16 of the movable block 17, the shaft 2 is moved by another direction detection sensor S provided in the movable block 17. After detecting whether it is arranged in the forward direction or in the reverse direction, this is transmitted to a controller (not shown). In the following description, when the shaft 2 is supplied to the welding area, the forward direction arrangement means a state in which the tip mounting portion at the tip is directed upward and the tip of the shaft 2 is directed toward the first track guide 13. Contrary to the reverse direction arrangement, it means a state in which the tip of the shaft 2 is directed toward the first vibration discharging device 12. Further, forward means that the shaft 2 moves toward the welding area, and reverse means that the shaft 2 moves away from the welding area.

  For example, when the shafts 2 in the guide groove 16 detected by the direction detection sensor S are arranged in the forward direction, the first cylinder 18 is driven to move the movable block 17 between the guide groove 16 and the first track guide 13. The vertical operating shaft 19 of the third cylinder 18 ″ is lowered while being moved to the matching second position. Subsequently, the second cylinder 18 ′ is operated to move the shaft 2 positioned in the guide groove 16 to the first position. One track guide 13 is supplied into the groove.

  On the other hand, when the shafts 2 in the guide grooves 16 detected by the direction detection sensor S are arranged in the opposite direction, the vertical operation shaft 19 is lowered by the operation of the third cylinder 18 ", and the tip is brought into close contact with the shaft 2. After that, the third cylinder 18 ″ is moved backward by the operation of the second cylinder 18 ′, and the shaft 2 in the reverse direction in the guide groove 16 is discharged to the first vibration discharging device 12 side.

  As a result, only the shaft 2 that is always positioned in the positive direction is continuously supplied by the movable block 17, the direction detection sensor S, and the first to third cylinders that are organically operated together therewith, so that the work efficiency is improved.

  4A and 4B, a rotation unit 14 for dropping the shaft 2 moving through the first track guide 13 downward is provided at one end of the first track guide 13 so as to be rotatable at right angles. Yes. Since the rotation unit 14 is provided with a guide hole 15 at a position corresponding to the shaft 2 that moves through the first track guide 13, the shaft 2 that moves along the first track guide 13 is connected to the rotation unit 14. It is inserted into the guide hole 15. When the shaft 2 is inserted into the guide hole 15, the shaft 2 inserted into the guide hole 15 falls by a certain height vertically downward while the rotation unit 14 rotates at a right angle.

  At this time, the shaft 2 falling from the guide hole 15 of the rotation unit 14 freely falls along a guide tube 74 provided vertically below the rotation unit 14. At this time, another base 75 is provided in the lower part of the guide tube 74, and the shaft 2 falling downward through the guide tube 74 is stopped on the base 75 as shown in FIG. 4B. become.

  Further, the apparatus of the present embodiment includes a first clamping device 70 for moving the shaft 2 provided from the shaft supply means 10 to the welding means disposed in the central welding area of the apparatus main body 1. The first clamping device 70 has a clamper 71 that can clamp the shaft 2 placed on the base 75. The clamper 71 is moved horizontally toward the center of the apparatus main body 1 by a servo motor 72. That is, as shown in FIG. 4A, the shaft 2 that freely falls by a certain height from the rotating unit 14 of the shaft supply means 10 through the vertical guide tube 74 is moved to the first track guide 13 side by the servo motor 72. In addition, it is inserted into the clamper 71 of the first clamping device 70, and the lower stage of the shaft 2 is supported on the base 75 to prevent further dropping.

  When the shaft 2 inserted into the clamper 71 of the first clamping device 70 is clamped in this way, the first clamping device 70 is moved toward the welding means disposed in the central portion of the apparatus main body 1 by the servo motor 72. . At this time, a flux applying means and a welding tip supplying means are disposed on the moving path, and the flux and the welding tip are applied and adhered to the tip of the shaft 2 by these means, respectively.

  That is, the apparatus main body 1 is provided with the first flux applying means 50 and the second flux applying means 60 spaced apart from each other at a predetermined interval. Can move in the direction.

  Accordingly, as shown in FIG. 5A, when the shaft 2 moving in the state clamped by the first clamping device 70 is first positioned below the first flux applying means 50, the first flux applying means 50 is lowered by the elevating cylinder 51. However, a viscous liquid flux is first applied to the tip of the shaft 2.

  After the primary flux application process is completed, the first clamping device 70 is located between the first flux application means 50 and the second flux application means 60 and stops. When the first clamping device 70 stops in this manner, as shown in FIG. 6A, the welding tip supply means 40 approaches the first clamping device 70, and the welding tip is attached to the tip of the shaft 2 to which the primary flux is applied. 4 is placed.

  The welding tip supply means 40 includes a winding roll 42 around which a belt-shaped welding tip band 41 is wound, a punch 44 that cuts the welding tip band 41 into a predetermined size to form a welding tip 4, and the punch 44 is moved up and down. A lower cylinder 43 to be moved, a horizontal transfer cylinder 48 to horizontally move the cut welding tip 4 to the shaft 2 side, an adsorption table 47 for adsorbing the cut welding tip 4, and lowering the adsorption table 47 to move the welding tip 4 An elevating cylinder 46 is mounted on the tip of the shaft 2.

  Accordingly, when the welding tip band 41 formed in a band shape from the winding roll 42 is supplied to a predetermined position, the lower cylinder 43 is raised and the punch 44 at the tip thereof is raised. The welding tip band 41 that protrudes from the upper surface of the punch 44 as the punch 44 rises is cut into a predetermined size to become the welding tip 4.

  The welding tip 4 cut in this way adheres to the lower part of the suction table 47 of the welding tip supply means 40 by the intake air. That is, since the suction table 47 is coupled to the lifting cylinder 46 positioned above the punch 44, when the welding tip 4 is formed by raising the punch 44, the welding tip 4 is sucked by the intake air simultaneously with the lowering of the lifting cylinder 46. Is attached to the lower stage of the suction table 47.

  In this state, as shown in FIG. 6B, the horizontal transfer cylinder 48 to which the elevating cylinder 46 and the suction table 47 are fixed operates, and the lower stage of the suction table 47 is placed at the tip of the shaft 2 on which the flux is primarily applied. Moving. Next, when the vacuum force of the suction table 47 is released, the welding tip 4 is separated from the suction table 47 and attached to the primary flux coating layer on the tip of the shaft 2.

  At this time, since the first applied flux has viscosity, the welding tip 4 is easily attached and does not come off due to the viscosity, while the welding tip 4 can be melted at a relatively low point, such as silver (Ag). It is preferable to use these materials.

  When the welding tip 4 is placed on the tip of the shaft 2 as described above, the first clamping device 70 moves to the lower side of the second flux applying means 60 as shown in FIG. A secondary flux application operation is performed on the surface.

  After the flux application step and the welding tip attachment step are completed in this way, the shaft 2 moves to the third clamp device 110 to move the first clamp device 70 below the welding means 30 as shown in FIG. 5B. To do. The third clamp device 110 includes a clamper 111 that holds the shaft 2, a cylinder 112 that moves the clamper 111 up and down, and an actuator 113 that horizontally moves the third clamp device 110.

  That is, after the flux application step and the welding tip attachment step are completed, when the shaft 2 is moved to the position where the third clamp device 110 is disposed by the first clamp device 70, the cylinder 112 of the third clamp device 110 is lowered. The shaft 2 is gripped by the clamper 111. At the same time, the clamp of the clamper 71 is released while the fixing force of the first clamp device 70 is released.

  Thereafter, the first clamping device 70 moves backward toward the shaft supply means 10 to clamp a new shaft, and the third clamping device 110 moves toward the welding means 30 by the actuator 113.

  As shown in FIGS. 8A and 8B, a fourth clamping device 180 is disposed below the welding means 30, and the shaft 2 supplied by the third clamping device 110 is gripped by the fourth clamping device 140. Maintain a standby position where welding is possible. The fourth clamping device 180 includes a clamper 181 that holds the shaft 2 and a cylinder 182 that moves the clamper 181 up and down.

  In the above description, the process of positioning the shaft 2 under the welding means 30 after attaching the flux and the welding tip to the tip of the shaft 2 provided from one side of the apparatus main body 1 has been described. Below, the process in which the cemented carbide tip 3 provided from the other side of the apparatus main body 1 is moved and positioned on the upper part of the welding means 30 will be described.

  As shown in FIG. 7A, a carbide chip supplying means 20 is mounted on the other side of the apparatus main body 1. The carbide tip supply means 20 is a supply device for aligning and discharging the carbide tips 3 having a certain size and welding them to the tip of the shaft 2 described above. A second spiral groove 21 is formed in the second vibration ejection device 22 that has received the carbide tip 3, and the carbide chip 3 is aligned through the second spiral groove 21 due to the vibration of the second vibration ejection device 22. Gradually discharged.

  A second track guide 23 is formed at the discharge end of the second spiral groove 21 toward the center of the apparatus main body 1, and the second track guide 23 is provided with a tip inclined downward. . As a result, the cemented carbide chip 3 discharged from the second vibration discharging device 22 naturally moves downward due to the vibration of the second vibration discharging device 22 and the inclination of the second track guide 23.

  An end of the second track guide 23 is connected to a guide tube 24 that guides the inserted cemented carbide chip 3 vertically downward. One end of the guide tube 24 is connected to the second track guide 23, and the other end is curved so as to be directed vertically downward. Therefore, the cemented carbide tip 3 that moves horizontally along the second track guide 23 and flows into the guide tube 24 falls down vertically along the curved guide tube 24.

  A second clamping device 80 for clamping the falling carbide tip 3 is disposed below the guide tube 24 of the carbide tip supplying means 20. As shown in FIG. 7B, the second clamping device 80 includes a clamper 81 that holds the lower stage of the carbide tip, and an actuator 82 that moves the clamper 81 horizontally. Therefore, after the cemented carbide chip 3 dropped through the guide tube 24 is gripped by the clamper 81, it is transported to the welding means 30 disposed in the center of the apparatus main body 1 by the actuator 82 and supplied to the tip of the shaft.

  At this time, as shown in FIG. 8A, a fifth clamp device 120 for raising and lowering the cemented carbide chip 3 up and down is disposed at the end where the second clamp device 80 moves. The fifth clamping device 120 includes a clamper 121 that holds the carbide tip 3 and a lifting cylinder 122 that moves the clamper 121 up and down. Therefore, after the cemented carbide tip 3 moved by the second clamping device 80 is gripped by the clamper 121 of the fifth clamping device 120, the clamper 121 is lowered by the lifting cylinder 122 to supply the cemented carbide tip 3 to the tip of the shaft 2. .

  As described above, the shaft 2 is positioned vertically below the welding means 30 by the fourth clamping device 180, and the carbide tip 3 is positioned above the welding means 30 by the fifth clamping device 120. As shown, the shaft 2 and the cemented carbide tip 3 are firmly welded to each other through the welding means 30 disposed in the middle thereof. The welding means 30 comprises a heating wire 32 having a coiled welding ring 31.

  When the fourth clamp device 180 is raised and the fifth clamp device 120 is lowered at the same time for welding the carbide tip, the tip of the shaft 2 gripped by these clampers 181 and 121 and the lower stage of the carbide tip 3 respectively. Approach each other. In this state, when power is applied to the welding ring 31 through the heating wire 32, the cemented carbide tip 3 that descends from the upper side while the welding tip 4 attached to the tip of the shaft 2 is melted by the welding ring 31 that generates heat at a high temperature. Is welded to the tip of the shaft 2.

  Here, the flux serves to prevent detachment when the welding tip 4 is attached and transported, and at the time of welding the shaft 2 and the carbide tip 3, the carbide tip 3 is fastened and stabilized at the tip of the shaft 2. It plays the role of joining.

  Further, in such a welding process, when the tip end of the shaft 2 and the lower stage of the cemented carbide tip 3 are welded in close contact with each other, the molten welding tip 4 may protrude or flow to the outer surface. In order to prevent this, the melted weld tip 4 is welded with the melted weld tip 4 so that the melted weld tip 4 has a spacing enough to match the outer diameter of these materials. Adjust to welding. As a result, the welding tip 4 is prevented from flowing to the outside, and the appearance of the welded portion is smoother and has superior welding quality.

  When the welding is completed in this manner, the fixing force of the upper fifth clamping device 120 is released, and the carbide tip 3 held by the clamper 121 becomes free, and at the same time, the fixing force of the fourth clamping device 180 is also released. As a result, the shaft 2 held by the clamper 181 becomes free. At this time, the lifting / lowering means 100 located below the fourth clamp device 180 is lifted to receive the welded carbide tool 5 from the fourth clamp device 180.

  The lifting / lowering means 100 includes a projecting / retracting shaft 102 having a receiving groove 101 whose one end is opened, and a lower lifting / lowering cylinder 103 that moves the projecting / retracting shaft 102 up and down. When the fixing force of the upper fourth clamping device 180 is released, the lower part of the cemented carbide tool 5 is inserted into the receiving groove 101 of the projecting shaft 102 while freely falling. At this time, another fixed cylinder 104 is coupled to one side of the upper part of the protruding shaft 102, and simultaneously with the fall of the carbide tool 5, the load of the fixed cylinder 104 protrudes and the carbide tool 5 in the accommodation groove 101 is moved. It will be fixed.

  With the cemented carbide tool 5 fixed in this manner, the raised / lowered shaft 102 is lowered by the elevating cylinder 103 and maintained in a standby state in which it can be inspected and discharged.

  The inspection discharge means 90 for discharging and inspecting the cemented carbide tool 5 in a state where the welding has been completed mainly includes a sixth clamp device 130, a seventh clamp device 140, an inspection device 150, an extraction device 160, and a recovery device 170. ing.

  The sixth clamping device 130 grips the cemented carbide tool 5 received in the receiving groove 101 of the protruding and retracting shaft 102 of the lifting / lowering means 100 and conveys it to the inspection / discharge means 90. The sixth clamping device 130 includes a clamper 131 for gripping the carbide tool 5 and an actuator 132 for sliding the clamper 131. As shown in FIG. 9A, the sixth clamping device 130 serves to inspect and discharge the welded carbide bit 5 and transport it to the collecting means.

  In this way, the cemented carbide tool 5 moved toward the front surface of the apparatus main body 1 by the sixth clamping device 130 falls downward from the clamper 131 by releasing the clamp of the sixth clamping device 130. At this time, another seventh clamping device 140 is attached to the falling position of the carbide tool 5, and the lower part of the carbide tool 5 is firmly held through the clamper 141 of the seventh clamping device 140. The seventh clamping device 140 includes a clamper 141 that holds the lower stage of the carbide tool 5 and a lifting cylinder 142 that moves the clamper 141 up and down. That is, as shown in FIG. 9B, the seventh clamping device 140 receives the carbide tool 5 easily from the clamper 131 of the sixth clamping device 130 by the clamper 141 and holds it, and then performs another inspection through the lifting operation of the lifting cylinder 142. Transport to device 150.

  The inspection device 150 is attached to one side of the seventh clamp device 140. The inspection device 150 includes a load cell 151 that presses the carbide tool 5 and an inspection cylinder 152 that operates the load cell 151. When the inspection cylinder 152 is operated, the load cell 151 pushes the carbide tool 5 in the seventh clamping device 140 from the side while moving forward. At this time, if the pressure acting on the load cell 151 stably maintains the reference value, it is determined that the welding state is suitable. If the pressure acting on the load cell 151 is less than the reference value, the welding state is poor. It is judged that there is, and this is sorted and collected.

  When such an inspection process is completed, the clamper 141 fixing force of the seventh clamp device 140 is released, and the cemented carbide tool 5 is in a free state in which it can be separated, and through the take-out device 160 provided with an air pipe that discharges high-pressure air. The carbide tool 5 is separated from the seventh clamping device 140 and discharged to one side thereof.

  Further, as shown in FIG. 10, a recovery device 170 for recovering the cemented carbide tool 5 is disposed on the discharge side of the seventh clamp device 140. The collection device 170 is provided with a discharge pipe 171 whose tip is located close to one side of the extraction device 160, and the cemented carbide bit 5 discharged by high-pressure air falls and is put into the discharge pipe 171.

  At this time, a spiral tube 172 is connected to the lower stage of the discharge pipe 171, and a sorting cylinder 173 for sorting and supplying the cemented carbide bit 5 to the collection box 174 is mounted on the lower stage side of the spiral pipe 172. Has been. Therefore, when the sorting cylinder 173 fixed to the apparatus main body 1 is operated, the load of the sorting cylinder 173 moves forward and backward to change the lower position of the spiral tube 172, thereby dropping through the discharge tube 171 and the spiral tube 172. The cemented carbide tool 5 is sorted and collected in a partitioned collection box 174.

  That is, the spiral tube 172 and the sorting cylinder 173 are based on the measurement data obtained by the inspection device 150 described above, and, for example, in the case of a non-defective product, the loading of the sorting cylinder 173 is advanced to the compartment space of the collection box 174 for collecting the good product. On the other hand, in the case of a defective product, the sorting cylinder 173 is reversely rotated and sorted into a partition space for collecting the defective product and collected.

  As described above, according to the present embodiment, it is possible to automatically produce a large amount of the carbide tool 5 having a carbide tip welded to the tip. Further, the shaft 2 and the cemented carbide tip 5 are supplied in an aligned state, and the welding process of the welding means 30 is performed together with the discharge of the welded cemented carbide tool 5 including these welding processes, and the sorting of the tested cemented carbide tool 5 is performed. The entire process is sequentially performed by an automated system until the collection process. Therefore, a large amount of carbide tools 5 can be produced at high speed, and even a small number of workers or only one operator can produce it, which is very economical. The welded part of the carbide tools is tested through a strength test using a load cell. Only high-quality finished products are selected and shipped, so excellent quality and safety can be maintained.

  In addition, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  According to the present invention, the supply and welding of the shaft and the cemented carbide tip is completed with only a single mechanical device, and the welded state of the cemented carbide bite is inspected to automatically select and collect defective or good products. Productivity is high, and high-quality production is possible while maintaining high quality safety. Therefore, it can be said that the industrial applicability of the present invention is extremely high.

It is a front view which shows the whole shaft manufacturing apparatus for cutting tools which concerns on this invention. It is a top view which shows the whole shaft manufacturing apparatus for cutting tools which concerns on this invention. FIG. 3A is a perspective view showing a shaft transfer state, and FIG. 3B is a perspective view showing a shaft sorting and supply state, in the operation of the shaft supply means in the shaft manufacturing apparatus for a cutting tool according to the present invention. FIG. 4A is a perspective view showing a fall state of a supplied shaft, and FIG. 4B shows a process of gripping the dropped shaft. It is a perspective view. FIG. 5A is a perspective view showing a process of applying a primary flux to the tip of a shaft, and FIG. 5B is a diagram of transferring a shaft having a flux and a welding tip. It is a perspective view which shows a process. 6A is a detailed view of the welding tip supply means of the shaft manufacturing apparatus for a cutting tool according to the present invention, FIG. 6A is a perspective view showing the means for cutting the welding tip band, and FIG. 6B is the cut welding tip at the tip of the shaft. It is a perspective view which shows the state mounted. FIG. 7A is a perspective view showing a transfer state of the carbide tip, and FIG. 7B shows a supply state of the carbide tip in the drawing showing the operation of the carbide tip supply means in the shaft manufacturing apparatus for a cutting tool according to the present invention. It is a perspective view. FIG. 8A is a detailed view showing a welding process of the shaft manufacturing apparatus for a cutting tool according to the present invention, FIG. 8A is a perspective view showing a process of supplying the shaft and the carbide tip, and FIG. It is a perspective view which shows the process in which it adjoins and welds. FIG. 9A is a perspective view showing a drawing process of a welded carbide tool, and FIG. 9B is a welding inspection state of the carbide tool. FIG. It is a perspective view which shows the discharge | emission means of the shaft manufacturing apparatus for cutting tools which concerns on this invention in detail.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Shaft 3 Carbide tip 4 Welding tip 5 Carbide tool 10 Shaft supply means 20 Carbide tip supply means 30 Welding means 40 Welding tip supply means 50 1st flux supply means 60 2nd flux supply means 70 1st clamp Device 80 Second clamp device 90 Inspection discharge means 100 Lifting means 110 Third clamp device 120 Fifth clamp device 130 Sixth clamp device 140 Seventh clamp device 150 Inspection device 160 Extraction device 170 Recovery device 180 Fourth clamp device

Claims (21)

The device body;
Shaft supply means mounted on one side of the apparatus body and sequentially supplying shafts toward a central welding area of the apparatus body;
A cemented carbide chip supply means mounted on the other side of the apparatus main body and sequentially supplying cemented carbide chips toward a central welding area of the apparatus main body;
Welding means attached to a central welding area of the apparatus main body and welding a cemented carbide tip to a tip of a shaft which is a tip attachment portion;
First flux supply means for firstly applying a flux to the tip of the shaft;
Welding tip supply means for supplying a welding tip on the flux;
Second flux supply means for supplying secondary flux to the upper portion of the welding tip;
A first clamping device for gripping and transferring the shaft conveyed by the shaft supply means to the welding means;
A second clamping device for gripping and transferring the cemented carbide tip conveyed by the cemented carbide tip supply means to the welding means to be welded to the tip of the shaft;
Inspection and discharge means for pulling out a carbide tool that is a cemented carbide tip-attached shaft to which a carbide chip is welded by the welding means, inspecting the welding state, and discharging the inspected carbide tool from the apparatus main body;
The manufacturing apparatus of the shaft for cutting tools characterized by including. The shaft supply means includes a first vibration ejecting device having a first spiral groove in which a shaft is inserted and moved;
The shaft of the first vibration discharging device is disposed at a predetermined distance from the discharge end portion of the first spiral groove, and the shaft sent from the first spiral groove by driving the first vibration discharging device is an apparatus main body. A first track guide that is progressively moved in a row toward the central welding zone of the
A rotating unit attached to one end of the first track guide so as to be able to rotate at right angles to drop the shaft moving through the first track guide downward;
Including
The rotating unit includes a guide hole formed at a position corresponding to the shaft moving through the first track guide, and the shaft moving along the first track guide is inserted into the guide hole of the rotating unit. 2. The apparatus for manufacturing a shaft for a cutting tool according to claim 1, wherein the rotating unit drops the shaft inserted into the guide hole vertically downward while rotating at a right angle. A first position where a shaft insertion guide groove is aligned with a discharge end of the first spiral groove of the first vibration discharging device between the first vibration discharging device and the first track guide; A movable block arranged to reciprocate between a second position in which the guide groove for use is aligned with the entry end of the first track guide;
A first cylinder for reciprocating the movable block between a first position and a second position;
A second cylinder mounted on one side of the first vibration ejector;
A third cylinder mounted at the tip of the load of the second cylinder and having a vertical actuation shaft;
A direction detection sensor S for detecting the forward and reverse directions of the shaft in the guide groove;
Further including
When the shafts in the guide grooves detected by the direction detection sensor S are arranged in the forward direction, the first cylinder is driven to move the movable block to the second position where the guide grooves and the grooves of the first track guides coincide. When the second cylinder is operated by lowering the vertical operation shaft of the third cylinder in the state of being moved to the position, the shaft positioned in the guide groove is supplied into the groove of the first track guide, and the direction If the shafts in the guide grooves detected by the detection sensor S are arranged in the opposite direction, the vertical operation shaft is lowered by the operation of the third cylinder to bring the tip into close contact with the shaft, and then the operation of the second cylinder. The reverse shaft in the guide groove is discharged to the first vibration discharging device side by moving the third cylinder backward. Apparatus for manufacturing a shaft for a cutting tool according to. The cemented carbide chip supply means includes a second vibration ejecting device having a second spiral groove formed therein, into which the cemented carbide chip is inserted and moved;
A second track guide connected to a discharge end portion of the second vibration discharge device and supplying a cemented carbide tip moving along the second spiral groove to a central welding area of the device main body; The apparatus for manufacturing a shaft for a cutting tool according to claim 1, wherein the carbide tip gradually moves in a line through the second spiral groove and the groove of the second track guide.   The cemented carbide tip supplying means further includes a downward bending guide tube at one end of the second track guide, and the cemented carbide tip moving along the second track guide enters the guide tube and passes through the guide tube. The apparatus for manufacturing a shaft for a cutting tool according to claim 4, wherein the shaft falls.   The welding means comprises a heating wire having a welding ring wound in a circle when viewed from above, and the shaft provided from the shaft supply means is positioned below the welding ring, and the cemented carbide tip. When the cemented carbide tip provided from the supply means is positioned on the upper side of the welding ring, the cemented carbide tip is placed on the vertical shaft by the flux at the tip of the shaft melted by the high-temperature heat radiated from the welding ring and the welding tip. The apparatus for manufacturing a shaft for a cutting tool according to claim 1, wherein the apparatus is welded to the tip.   A third clamp device is disposed between the welding means and a first clamp device that grips the shaft from the shaft supply means and grips the shaft on which flux application and welding tips have been applied, and the third clamp device is a shaft. A clamper that grips the clamper, a cylinder that moves the clamper up and down, and an actuator that horizontally moves the third clamp device. After the shaft moved by the first clamp device is moved to the clamper of the third clamp device, The apparatus for manufacturing a shaft for a cutting tool according to claim 1, wherein the shaft is located below the welding means by the cylinder and the actuator.   A fourth clamp device is disposed below the welding means so as to be movable up and down. The fourth clamp device 1 includes a clamper that grips a shaft and a cylinder that lifts and lowers the clamper, and is supplied by the third clamp device. 7. The apparatus for manufacturing a shaft for a cutting tool according to claim 6, wherein the shaft is maintained in a standby position where welding is possible while being held by a clamper of the fourth clamp device.   On the lower side of the fourth clamping device 1, a lifting means for receiving a cemented carbide bite that has been welded from the fourth clamping device is disposed, and the lifting means has a retracting shaft having a receiving groove whose one end is opened, It includes a lower elevating cylinder that moves the protruding and retracting shaft up and down, and a fixed cylinder is arranged on the upper side of the protruding and retracting shaft. The apparatus for manufacturing a shaft for a cutting tool according to claim 1, wherein a cemented carbide tool is fixed. The welding tip supply means includes a winding roll around which a belt-like welding tip band is wound;
A punch that cuts the welding tip band to a certain size to create a welding tip;
A lower cylinder for moving the punch up and down;
A horizontal transfer cylinder that horizontally moves the cut welding tip toward the shaft;
An adsorption stand for adsorbing the cut welding tip;
The apparatus for manufacturing a shaft for a cutting tool according to claim 1, further comprising an elevating cylinder that lowers the suction table and places the welding tip on the tip of the shaft.   The apparatus for manufacturing a shaft for a cutting tool according to claim 1, wherein the first flux supplying means and the second flux supplying means are moved up and down by an elevating cylinder. The first clamping device includes a clamper for gripping a lower stage of the shaft discharged from the shaft supply means;
The apparatus for manufacturing a shaft for a cutting tool according to claim 1, further comprising a servo motor that horizontally moves the clamper toward a central welding area of the apparatus main body. A vertical guide tube disposed between the shaft supply means and the first clamping device;
One end is connected to the first track guide, and the other end is disposed below the guide tube, and further includes a base for supporting the shaft falling through the guide tube to prevent further dropping. The manufacturing apparatus of the shaft for cutting tools of Claim 1 characterized by these. The second clamping device includes a clamper for gripping a lower stage of the carbide tip discharged from the carbide tip supply means;
The apparatus for manufacturing a shaft for a cutting tool according to claim 1, further comprising an actuator for horizontally moving the clamper. A fifth clamp device for raising and lowering the carbide tip up and down is disposed at a tip portion to which the second clamp device moves; and the fifth clamp device includes a clamper for holding the carbide tip;
The apparatus for manufacturing a shaft for a cutting tool according to claim 1, further comprising an elevating cylinder that moves the clamper up and down to move the cemented carbide tip toward the welding means. The inspection discharge means includes a sixth clamping device for taking out the welded carbide tool from the housing groove of the retracting shaft;
A seventh clamp device disposed at a lower portion of the sixth clamp device so as to grip a lower stage of the carbide tool when releasing the clamp of the sixth clamp device;
An inspection device for inspecting the welding state of the cemented carbide tool fixed by the seventh clamping device;
A take-out device for taking out the cemented carbide bite inspected by the inspection device from the seventh clamping device;
The apparatus for manufacturing a shaft for a cutting tool according to claim 1, further comprising a collecting device for sorting and collecting the cemented carbide tool discharged by the take-out device into a non-defective product and a defective product. The sixth clamping device is attached to the center of the entire surface of the apparatus main body so as to be slidable back and forth toward the welding means, and the sixth clamping device includes a clamper for gripping the welded carbide tool;
The apparatus for manufacturing a shaft for a cutting tool according to claim 16, further comprising an actuator for sliding the clamper back and forth. The seventh clamp device is disposed below the sixth clamp device and clamps a lower stage of the carbide tool;
17. The apparatus for manufacturing a shaft for a cutting tool according to claim 16, further comprising an elevating cylinder 1 for moving the clamper up and down. The inspection device is mounted on one side of a seventh clamping device and a load cell that presses the carbide tool;
Including an inspection cylinder that operates the load cell,
The side of the cemented carbide tool fixed on the seventh clamping device is pressed with a load cell, and the pressure acting on the load cell is compared with a reference value to inspect the welding state of the cemented carbide tool. Item 17. A device for manufacturing a shaft for a cutting tool according to Item 16.   When the inspection by the inspection device is completed, the take-out device releases the carbide tool from the seventh clamp device and simultaneously discharges the carbide tool on the seventh clamp device to one side by discharging high-pressure air. The manufacturing apparatus of the shaft for cutting tools of Claim 16 characterized by these.   The recovery device includes a discharge pipe whose tip is positioned close to one side of the extraction device, and the discharged carbide tool is dropped into the discharge pipe, and a spiral tube is disposed below the discharge pipe. Is connected to the lower side of the spiral tube, and a sorting cylinder for sorting and supplying the cemented carbide bite to the collection box is mounted, and the lower position of the spiral tube can be changed by the operation of the sorting cylinder. The apparatus for manufacturing a shaft for a cutting tool according to claim 16, wherein the carbide tool falling through the discharge pipe and the spiral pipe is sorted into a non-defective product and a defective product and collected in a collection box.

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