JP2018144121A - Jig for drill set and drill error setting determination method using jig for drill set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jig for drill set and a drill error setting determination method using the jig for drill set, which may measure and adjust protrusion volume of a drill from a tool holder for a machine tool upon setting the drill on the tool holder for the machine tool, and may determine drill error setting.SOLUTION: A jig for drill set 10 comprises a tip cap 20 having a drill set hole 21 and a measurement reference plane 22, and a guide member 30, which may determine drill error set with a pertinent groove 31 and a thin groove 32 provided on the guide member 30. A tool holder 60 on which a drill 50 is temporarily set is mounted on a measurement tool 40, the drill set hole of the tip cap is set at a tip end part of the drill, protrusion volume of the drill is measured and adjusted with the measurement tool 40 using the measurement reference plane of the tip cap by guiding an axis of the drill with the guide member.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drill set jig used for measuring and adjusting the amount of protrusion of a drill, particularly a small diameter drill, when setting a drill in a tool holder for a machine tool, and a drill erroneous set discrimination method using the drill set jig About.

  Machine tools such as an automated machining center store various types of tools such as drills in a storage shelf, and an appropriate tool is called and set from a storage shelf by a pallet changer by programming. Each tool is set in a tool holder for machine tools, and it is assumed that the tool information given to the tool holder for machine tools matches the tool information of the program. The tool information includes information on the type of tool, the tool diameter, and the pop-out amount (tool length) of the tool from the tool holder for machine tools. Therefore, when setting the tool in the tool holder for machine tools, it is necessary to set the type, diameter, and pop-out amount of the tool without mistake. If any of these is set incorrectly and processed, a large number of defective products will be manufactured.

When a tool such as a drill is set in a tool holder for a machine tool, it is generally set manually by an operator, and when the tool is set, the amount of protrusion of the drill is measured and the length is finely adjusted.
In measurement, a commercially available linear gauge or the like may be used as it is, but in many cases, a dedicated jig is manufactured and measured in order to shorten the work time.

  Especially in the case of a tip shape such as a drill, it is very difficult to measure as it is because the tip is sharp. Therefore, there is a method of measuring by setting a jig at the tip portion to create a measurement reference plane.

  Depending on the configuration of the machine tool, there are some which automatically measure the tool diameter and the pop-out amount with a dedicated measuring machine using a laser beam, a touch sensor or the like as in Patent Document 1 and Patent Document 2. However, when setting a tool in a holder, it is often set manually.

JP 2000-55628 A Japanese Patent Application Laid-Open No. 2014-87883

  Most conventional jigs set on the tip of a tool do not have a structure that can detect an incorrect set in the first place. However, it was possible to determine the wrong set because it did not enter the hole or groove provided in the jig, but in the case of a drill with a diameter smaller than the standard, the jig could be set without any sense of incongruity. It was very difficult to determine the set.

  In addition, it is difficult to identify the drill diameter at a glance because the diameter of a small diameter drill (thin diameter drill) is 0.5 mm or less, and the tool diameter is engraved on the drill. Most of them are, but since the drill itself is thin, the engraved letter size is small and very difficult to read, so there was a risk of setting the drill diameter incorrectly.

  The problem of the present invention is that it is possible to easily and accurately measure and adjust the amount of protrusion of the drill from the tool holder for machine tools when the drill is set in the tool holder for machine tools. An object of the present invention is to provide a drill set jig that can be discriminated and a drill misset discrimination method using the drill set jig.

  The present invention has been made in order to solve the above-described problems, and the invention of the drill setting jig according to claim 1 is characterized in that the work of the drill when the drill is set in a tool holder for a machine tool. A jig used for measuring and adjusting the amount of protrusion from the machine tool holder, the tip cap having a non-through hole for inserting the tip of the drill and a measurement reference surface for the amount of protrusion of the drill; An appropriate groove having a width having a tolerance for the diameter of the prescribed drill to be measured, and a narrow groove having a width narrower than the appropriate groove at the bottom of the appropriate groove, and the axial direction of the drill by the groove. If a drill with a diameter smaller than the prescribed drill to be measured is set in the tool holder for the machine tool by mistake, the narrow diameter drill passes through the appropriate groove and is guided by the narrow groove. And a guide member It is characterized in that was.

  The invention of the drill misset determination method using the jig for a drill set according to claim 2 is a method for measuring the amount of protrusion of the drill from the tool holder for the machine tool when the drill is set on the tool holder for the machine tool. And a jig used for adjustment, including a tip cap having a non-through hole for inserting the tip of the drill and a measurement reference surface of the amount of protrusion of the drill, and a diameter of the prescribed drill to be measured A drill having a proper groove having a width with a tolerance and a guide member having a narrow groove narrower than the proper groove at the bottom of the proper groove and guiding the axial direction of the drill by the groove The drill set hole of the tip cap is set at the tip of the drill in a state where the setting jig is temporarily set in the tool holder for the machine tool, and the guide member guides the shaft of the drill. A method of determining an incorrect set of a drill when measuring and adjusting the amount of protrusion of the drill using a measurement instrument using the measurement reference surface of the tip cap, When the drill is temporarily set and the drill setting jig is set on the specified drill, the axis of the specified drill is guided by the appropriate groove of the guide member, and the drill setting jig is the measuring instrument. It is possible to measure the amount of protrusion of the prescribed drill that is held in an appropriate position, and a drill having a diameter larger than the prescribed drill is erroneously temporarily set in the tool holder for the machine tool. If an attempt is made to set a drill with a large diameter, the tip cap cannot be inserted into the non-through hole, and the large diameter drill is inserted into the appropriate groove of the guide member. Can not guide the drill with the large diameter, and can not set the drill set jig, it is impossible to measure the amount of popping out, to determine the wrong set of the drill, for the machine tool When a drill with a diameter smaller than a prescribed drill is accidentally set in the tool holder, and the drill setting jig is set on the thin diameter drill, the axis of the thin diameter drill is aligned with the appropriate groove of the guide member. And the guide for the drill set is not held in an appropriate arrangement with the measuring instrument, and the contact portion between the non-through hole of the tip cap and the tip of the narrow-diameter drill is supported as a fulcrum. As a result, the measurement reference surface of the protruding amount of the tip cap also tilts and the measuring of the protruding amount becomes impossible. It is characterized by discriminating

The invention of the drill set jig and the drill misset determination method using the drill set jig of the present invention is characterized in that the drill protrudes from the machine tool tool holder when the drill is set on the machine tool tool holder. A jig used for measuring and adjusting the amount, a tip cap having a non-through hole for inserting the tip of the drill and a measurement reference surface of the amount of protrusion of the drill, and the prescribed target to be measured An appropriate groove having a width with a tolerance in the diameter of the drill and a guide member having a narrow groove narrower than the appropriate groove at the bottom of the appropriate groove and guiding the axial direction of the drill by the groove are provided. The drill set hole of the tip cap is set at the tip of the drill in a state where the drill set jig and the drill set jig temporarily set in the tool holder for the machine tool are set. The guide member guides the shaft of the drill, and determines a drill misset when measuring and adjusting the amount of protrusion of the drill with a measuring instrument using the measurement reference surface of the tip cap. When the prescribed drill is temporarily set in the tool holder for the machine tool and the drill setting jig is set in the prescribed drill, the shaft of the prescribed drill is guided by the appropriate groove of the guide member. The drill set jig is held in an appropriate position with the measuring instrument, and the amount of protrusion of the specified drill can be measured, and a drill with a diameter larger than the specified drill is erroneously temporarily set in the tool holder for the machine tool. If the jig for setting the drill is to be set on the drill having a large diameter, the jig cannot be inserted into the non-through hole of the tip cap, and the Because the drill with the large diameter cannot be inserted into the appropriate groove of the drill member, the drill with the large diameter cannot be guided, and the drill setting jig cannot be set. When the wrong set of the drill is discriminated and a drill with a diameter smaller than a prescribed drill is accidentally temporarily set in the tool holder for the machine tool, and the drill setting jig is set on the thin diameter drill, the narrow diameter The shaft of the drill passes through the appropriate groove of the guide member and is guided by the narrow groove, and the drill setting jig is not held in proper alignment with the measuring instrument, and the non-through hole of the tip cap By tilting out of balance with the point of contact with the tip of the thin-diameter drill as a fulcrum, the measurement reference plane for the amount of protrusion of the tip cap also tilts, and the amount of protrusion can be measured. It is characterized by discriminating the wrong set of drills when it becomes impossible, so that the amount of protrusion can be accurately and simply measured even if the tip of the drill is pointed by the drill setting jig The working time can be greatly reduced.
In addition, since it is possible to determine the wrong set of drills other than the drill with the specified diameter, especially drills with a narrow diameter, it is possible to prevent manufacturing defects and to reduce the time required for re-setup due to the wrong set. There is. In addition, the versatility is high, and even when applied to other tools as well as drills, it is possible to determine an erroneous set when measuring the pop-out amount.

The whole figure including the measuring instrument at the time of measurement of the amount of projection using the jig for drill sets concerning the present invention is shown. It is a figure of one Embodiment of the jig for drill sets concerning this invention, (a) is a front view, (b) is a left view, (c) is a top view, (d) shows a bottom view. It is a state figure of the drill incorrect set discrimination method using the jig for drill sets concerning the present invention, (a) at the time of a proper drill set, (b) is a state figure at the time of a wrong diameter drill set.

  Hereinafter, an example of an embodiment of the present invention will be described in more detail with reference to the drawings. FIG. 1 is an overall view including a measuring instrument for measuring the amount of protrusion using a drill set jig according to the present invention, FIG. 2 is a diagram of a drill set jig, and FIG. 3 is a drill set jig. The state diagram of the drill misset discriminating method was shown. As a whole, including the measuring instrument for measuring the pop-out amount using the drill set jig, the drill set jig 10, the measuring instrument 40, the drill 50, and the tool holder 60 are configured. The drill setting jig 10 has a tip cap 20 provided with a drill setting hole 21 and a measurement reference surface 22 and a guide member 30, and drills are performed by appropriate grooves 31 and narrow grooves 32 provided in the guide member 30. Can be discriminated. A tool holder 60 on which a drill 50 is temporarily set is mounted on the measuring instrument 40, a drill setting hole 21 of the tip cap 20 is set at a tip portion of the drill 50, and a guide member 30 guides the axis of the drill 50 and the drill 50 Is accurately measured and adjusted by the measuring instrument 40 using the measurement reference surface 22 of the tip cap 20.

As shown in FIG. 2, the drill setting jig 10 has a tip cap 20 and a guide member 30, and has a structure connected by an L-shaped plate 11. The drill setting jig 10 is configured such that the drill setting hole 21 of the tip cap 20 is set at the tip portion of the drill 50. The guide member 30 is configured to guide the shaft of the drill 50 so that a balanced balance can be obtained as shown in FIG.
The drill setting jig 10 is a jig used for measuring and adjusting the amount of protrusion of the drill, and the measuring instrument 40 includes a tool holder set base 41, a gauge 42, a gauge support 43, and a gauge set base. 44, and a tool holder 60 in which a drill 50 is temporarily set is set on a tool holder receiver 41a provided on a tool holder set base 41.
The drill 50 set in the tool holder 60 and the measuring part 42a of the gauge 42 are arranged so as to be set coaxially.

  As shown in FIG. 2, the tip cap 20 has a rod-shaped pin provided with a measurement reference surface 22 at one end and a non-through hole drill set hole 21 at the other end. The shape of the measurement reference surface 22 is a spherical shape having a fan-like shape when viewed from the side as shown in FIGS. 2A and 2C, and can be measured without changing the measurement distance even if the drill setting jig 10 is slightly inclined. It has become. The drill set hole 21 is a non-through hole in which a tolerance is given to the diameter of the prescribed drill 50, and a drill thicker than the prescribed diameter cannot be set.

As shown in FIG. 2D, the guide member 30 has an appropriate groove 31 that guides the shaft of the drill 50 having a predetermined diameter, and an appropriate groove bottom 31 a portion that is a bottom portion of the appropriate groove 31, and a width of the appropriate groove 31. A narrower narrow groove 32 is provided.
When the drill 50 having a specified diameter is guided, the axis of the drill 50 comes into contact with the appropriate groove bottom 31a, and the drill setting jig 10 is parallel to or perpendicular to the axis of the drill 50 as shown in FIG. It becomes possible.
If a drill with a diameter smaller than the standard has been set, the drill 50 passes through the appropriate groove bottom 31a without abutting the shaft, is guided by the narrow groove 32, and contacts the plate 11 serving as the bottom of the groove. It will be.

In the measuring instrument 40, a tool holder set base 41 and a tool holder receiver 41a for horizontally installing the tool holder 60, and a gauge post 43 can be exchanged with pillars of different lengths based on the upper surface of the tool holder set base 41. A gauge set base 44 is attached to the upper end of the gauge support 43 in the horizontal direction, and a gauge 42 using a dial gauge for precisely measuring the amount of protrusion is attached to the gauge set base 44 so that the vertical direction. Measurement is possible.
When the tool holder 60 temporarily set with the drill 50 is set on the tool holder receiver 41 a provided on the tool holder set base 41, the tool holder set base 41 is set in the vertical direction. Then, the drill setting jig 10 is set at the tip portion of the drill 50, and the gauge probe 42 a of the gauge 42 is brought into contact with the measurement reference surface 22 provided on the tip cap 20 of the drill setting jig 10.
In the present embodiment, the measuring instrument 40 is configured to perform measurement by setting the tool holder 60 and the drill 50 in the vertical direction (vertical direction). I just need it.

In this embodiment, the gauge 42 uses a dial gauge. By using a dial gauge, there is an advantage that the measuring force becomes constant, and repeated measurement can be performed with very high accuracy and speed. When a plurality of machine tools are operated, there are cases where a plurality of drills are exchanged at the same time, and the measuring instrument 40 is configured to use a dial gauge.
However, the configuration of the measuring instrument using a linear gauge is not limited to this. Even with a linear gauge, the amount of protrusion can be measured using the drill setting jig 10 of the present application, and it is possible to determine an erroneous set as a matter of course.

  The length of the gauge post 43 can be measured by producing and replacing a post having a different length in advance according to the set pop-out amount of each tool. This is because the measurement range of the dial gauge is narrow, and therefore the gauge support 43 having a different length is required for each set pop-out amount.

In the present invention, it is a jig for drill setting that can be used for measuring and adjusting the amount of protrusion when setting a drill in a tool holder and discriminating an erroneous set. A high effect can be exhibited by using it when it is difficult to determine whether the wrong drill is set at first glance.
In addition to the drill, it can be applied in the same configuration as a jig for drill setting, so that the amount of protrusion when setting a rod-shaped tool such as an end mill, reamer, or tap used in a machine tool such as a machining center to a holder can be reduced. It is possible to determine an erroneous set even during measurement.

Next, an erroneous drill setting method using the drill setting jig 10 will be described with reference to FIG.
In the case where the drill diameter is specified, as shown in FIG. 3A, the drill set jig 10 is brought into a substantially vertical state by guiding the drill 50 with the appropriate groove bottom 31a of the appropriate groove 31 of the guide member 30 in particular. The measurement reference plane 22 and the gauge probe 42a of the gauge 42 are in contact with each other in a substantially vertical manner, and the amount of protrusion can be accurately measured.

  If a drill whose diameter is larger than the specified one is temporarily set, the drill 50 can be inserted into the drill set hole 21 of the tip cap 20 when the drill setting jig 10 is set at the tip of the drill 50. In addition, since it cannot be guided in the groove of the guide member 30, the drill setting jig 10 cannot be set on the drill 50 in the first place, so that an erroneous setting of the drill can be determined.

  In addition, when a drill with a drill diameter smaller than the specified one is temporarily set by mistake, the narrow-diameter drill 50 passes without being guided by the appropriate groove bottom 31a of the appropriate groove 31 as shown in FIG. Then, it moves to the narrow groove 32 and comes into contact with the wall surface of the plate 11 and stops. Then, the entire drill setting jig 10 is greatly inclined with the contact portion between the drill setting hole 21 of the tip cap 20 and the tip of the drill 50 as a fulcrum, and the measurement reference plane 22 of the tip cap 20 is greatly increased from above the drill 50. It is so tilted that it cannot be measured by the gauge probe 42a of the gauge 42. As a result, it is possible to surely determine that the drill 50 has a diameter smaller than a predetermined diameter, so that it is possible to easily determine a wrong set of drills.

  The drill set jig and drill misset determination method using the drill set jig of the present invention have been described with reference to the jig and misset determination method when using a drill as a tool. It can also be applied when measuring the amount of protrusion when setting a tool such as a reamer or tap in the holder, and can be used to determine the wrong set when measuring the amount of protrusion of various machine tools that use a tool holder. it can.

DESCRIPTION OF SYMBOLS 10 Drill set jig | tool 11 Plate 20 Tip cap 21 Drill set hole 22 Measurement reference plane 30 Guide member 31 Proper groove 31a Proper groove bottom 32 Narrow groove 40 Measuring instrument 41 Tool holder set base 41a Tool holder receiver 42 Gauge 42a Gauge measuring element 43 Gauge support 44 Gauge set base 50 Drill 60 Tool holder

Claims (2)

A jig used for measuring and adjusting the amount of protrusion of the drill from the machine tool tool holder when setting a drill on a machine tool tool holder,
A tip cap having a non-through hole for inserting the tip of the drill and a measurement reference surface of the amount of protrusion of the drill;
An appropriate groove having a width having a tolerance for the diameter of the prescribed drill to be measured, and a narrow groove having a width narrower than the appropriate groove at the bottom of the appropriate groove, and the axial direction of the drill by the groove. If a drill with a diameter smaller than the prescribed drill to be measured is set in the tool holder for the machine tool by mistake, the narrow diameter drill passes through the appropriate groove and is guided by the narrow groove. A guide member,
A jig for drill set, characterized in that is provided. A jig used for measuring and adjusting the amount of protrusion of the drill from the tool holder for machine tools when setting a drill in a tool holder for machine tools, and a non-through hole for inserting the tip of the drill And a tip cap having a measurement reference surface for the amount of protrusion of the drill, an appropriate groove having a tolerance with respect to the diameter of the prescribed drill to be measured, and a bottom of the appropriate groove that is narrower than the appropriate groove A tip of the drill in a state in which a drill setting jig having a narrow groove having a width and a guide member for guiding the axial direction of the drill by the groove is temporarily set in the tool holder for the machine tool The drill set hole of the tip cap is set in a portion, the guide member guides the shaft of the drill, and the amount of protrusion of the drill is measured using the measurement reference plane of the tip cap. A method of determining an erroneous set of drills in adjusting measured by the instrument,
When a prescribed drill is temporarily set in the tool holder for the machine tool and the drill setting jig is set on the prescribed drill, the shaft of the prescribed drill is guided by the appropriate groove of the guide member, The jig for drill set is held in proper arrangement with the measuring instrument, and the amount of protrusion of the specified drill can be measured,
When a drill with a diameter larger than a prescribed drill is accidentally temporarily set in the tool holder for machine tool, and the drill setting jig is set on the drill with a large diameter, Measurement cannot be performed, and the drill with the large diameter cannot be inserted into the appropriate groove of the guide member, so the drill with the large diameter cannot be guided, and the jig for drill setting cannot be set. To determine the wrong set of drills,
When a drill having a diameter smaller than a prescribed drill is erroneously temporarily set in the tool holder for the machine tool and the jig for drill setting is set on the narrow diameter drill, the shaft of the narrow diameter drill is moved to the guide member. Is passed through the appropriate groove and is guided by the narrow groove, and the drill setting jig is not held in an appropriate arrangement with the measuring instrument, and the non-through hole of the tip cap and the drill tip of the narrow diameter By tilting out of balance with the contact portion as a fulcrum, the measurement reference plane of the protruding amount of the tip cap also tilts, and it is impossible to measure the protruding amount, so that an erroneous setting of the drill is determined,
A drill mis-set discriminating method using a drill set jig characterized by

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