JP2013252594A - Machining device and machining method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a machining device configured to regulate a tap phase to a predetermined phase.SOLUTION: A machining device performs machining by regulating a phase of a tap 10 attached to an NC machine body through a holder 20 to a predetermined phase for the NC machine. The NC machine body includes a movable part 50 with the holder 20 attached thereto. The holder 20 includes a regulating mechanism 25 with a first mark 22 marked in a predetermined position in a circumferential direction and for regulating a length between the holder 20 and tap 10 in the axial direction. Also, a cap 30 screwed with the tap 10 and marked with a second mark 32 at a predetermined position in a circumferential direction is included.

Description

  The present invention relates to a processing apparatus and a processing method.

  A tap is a tool used to cut a screw (screw hole) inside a hole processed in advance in metal processing. The tap is detachably attached to the holder. The holder is attached to, for example, an NC (Numerical Control) machine.

  For example, in a cylinder head of an automobile engine, a screw hole is processed by a tap in order to mount a spark plug. At this time, in order to improve the combustion efficiency of the engine, the spark plug needs to be attached to the cylinder head so that the ground electrode provided at the lower end of the spark plug is positioned in a desired direction in the combustion chamber. is there. Therefore, the screw hole for attaching the spark plug to the cylinder head of the engine needs to be processed with a predetermined phase.

  In order to process the screw hole with a predetermined phase, the tap phase needs to be adjusted to the predetermined phase during processing. For example, Patent Document 1 discloses a configuration in which a screw hole is machined with a predetermined phase by managing the starting position and starting phase of the tap. However, in the configuration of Patent Document 1, for example, after the tap attached to the holder is replaced, the phase of the tap is shifted.

Japanese Patent Laid-Open No. 03-154711

  However, since there is an individual difference in the tap phase, in the configuration of Patent Document 1, for example, after the tap attached to the holder is replaced, the phase of the tap is shifted, and the phase of the screw hole formed by the tap is managed. Can not do it. That is, the problem to be solved by the present invention is to adjust the tap phase to suppress the phase shift of the screw hole due to the individual difference of the tap.

  The problem to be solved by the present invention is as described above, and means for solving the problem is to provide a machining apparatus and a machining method capable of adjusting the tap phase to a predetermined phase. Hereinafter, means for solving the problem will be described in detail.

  That is, in claim 1, a processing apparatus that adjusts a phase of a tap attached to a processing apparatus main body through a holder to a predetermined phase with respect to the processing apparatus main body, and the processing apparatus main body includes: The holder includes a movable part to which the first mark is marked at a predetermined circumferential position, and the tap includes an adjustment mechanism that adjusts an axial length of the holder and the tap. The cap is screwed and has a cap marked with a first mark at a predetermined position in the circumferential direction.

  In Claim 2, It is a processing method which adjusts the phase of the tap attached to a processing device main body via a holder to a predetermined phase with respect to this processing device main body, and the processing device main body is the holder The holder is provided with an adjustment mechanism in which a first mark is marked at a predetermined position in the circumferential direction, and an axial length between the holder and the tap is adjusted, and the predetermined position in the circumferential direction is provided. The first step of covering the cap with the first mark on the tap and tightening the cap to a predetermined position of the tap matches the circumferential position of the first mark and the second mark of the cap. Thus, the second step of loosening from the predetermined position and the third step of adjusting the axial length of the holder and the cap to a predetermined length by the adjusting mechanism are provided.

  According to the processing apparatus and the processing method of the present invention, the tap phase can be adjusted to suppress the phase shift of the screw hole due to the individual difference of the tap.

The schematic diagram which showed the structure of the movable part of a processing apparatus. The flowchart which showed the flow of the processing process. The schematic diagram of the flow which adjusts the phase of a tap in a process.

The processing apparatus 100 will be described with reference to FIG.
In addition, in FIG. 1, the processing apparatus 100 is represented typically. Moreover, below, it demonstrates according to the axial direction and circumferential direction which are shown by FIG.

  The processing apparatus 100 is an embodiment of a processing apparatus according to the present invention. The processing apparatus 100 is a processing apparatus that adjusts and attaches the phase of the tap 10 attached to the holder 20 to a predetermined phase with respect to the movable part 50 of the NC machine, and moves and moves the movable part of the NC machine. In other words, the machining apparatus 100 determines the phase of the tap, which is a spiral groove (male screw) of the tap 10 attached to the movable part 50 of the NC machine via the holder 20 with respect to the movable part 50 of the NC machine. This is a device for processing with a fixed tap phase.

  The tap phase is an angle θ on a plane where a spiral drawn by a specific part of the screw shape intersects a plane perpendicular to the axis of the screw shape, and when the phase is different by 360 degrees, the same shape It becomes.

  The processing apparatus 100 generally includes a tap 10, a holder 20, a cap 30, a dial gauge 40, and a movable part 50 of an NC machine as a processing machine.

  The tap 10 is a tool used to cut a screw inside a hole that has been processed in advance in metal processing. The tap 10 is detachably attached to the holder 20. The tap 10 includes a main body 11 and a tongue 12. In addition, the tap 10 of this embodiment drills a through hole in a cylinder head of an automobile engine.

  The main body 11 is formed in a substantially cylindrical shape, and a spiral groove (male screw) is formed around the main body 11. The tongue 12 is a portion that is inserted into an insertion opening 26 of the holder 20 described later when the tap 10 is attached to the holder 20, and is formed so that the axial sectional shape is a square.

  The holder 20 is one to which the tap 10 is detachably attached. The holder 20 is used by being attached to the movable part 50 of the NC machine. That is, the holder 20 is used as a mounting tool for mounting the tap 10 to the movable part 50 of the NC machine. The holder 20 includes a main body 21, a first mark 22, a flange 23, a mounting portion 24, an adjustment mechanism 25, and an insertion port 26.

  The main body 21 is configured in a substantially cylindrical shape, and is configured such that when the tap 10 is attached to the holder 20, the axis of the main body 21 and the axis of the tap 10 are coaxial. The first mark 22 is marked with a line segment parallel to the axial direction at the upper end side in the axial direction of the main body 21 of the holder 20 and at a predetermined position in the circumferential direction. The predetermined position in the circumferential direction marked on the first mark 22 is set to be an arbitrary position at the upper end portion of the holder 20, for example.

  The attachment part 24 is a part attached to the movable part 50 of the NC machine. The attachment portion 24 is formed on the lower end side in the axial direction of the holder 20. The flange 23 is formed on the lower end side in the axial direction of the main body 21 of the holder 20, and is located between the main body 21 and the attachment portion 24.

  The adjusting mechanism 25 adjusts the amount of insertion of the tongue 12 into the insertion port 26 and adjusts the axial length of the holder 20 and the tap 10.

  The insertion opening 26 is a portion into which the tongue 12 of the tap 10 is inserted when the tap 10 is attached to the holder 20. The sectional shape of the insertion port 26 in the axial direction is formed in a square shape corresponding to the shape of the tongue 12, and the tongue 12 and the insertion port 26 are fitted by inserting the tongue 12 into the insertion port 26.

  The cap 30 is screwed into the tap 10 when adjusting the phase of the tap 10 attached to the holder 20 to a predetermined phase. The cap 30 includes a main body 31 and a second mark 32.

  The main body 31 is formed in a substantially cylindrical shape. In the present embodiment, the main body 31 is formed in a substantially cylindrical shape with the upper end closed. A spiral groove (female screw) 35 that is screwed into the tap 10 is formed on the inner peripheral surface of the main body 31.

  The second mark 32 is marked with a line segment parallel to the axial direction at a lower end side in the axial direction of the cap 30 and at a predetermined position in the circumferential direction. The predetermined circumferential position at which the second mark 32 is marked is set to coincide with the threading start position of the female screw 35 at the lower end of the cap 30, for example.

  The dial gauge 40 is a device that measures a predetermined linear distance. The dial gauge 40 measures a length L in the axial direction from the lower end (lower surface) of the flange 23 of the holder 20 to the upper end of the cap 30, for example.

The flow of the processing step S100 will be described with reference to FIG.
In addition, in FIG. 2, the flow of processing process S100 is represented by the flowchart.

  Processing step S100 is an embodiment of a processing apparatus and a processing method according to the present invention. The machining step S100 is a step in which the phase of the tap 10 with respect to the holder 20 is adjusted and attached to the NC machine movable unit 50 to a predetermined phase, and the NC machine movable unit 50 is moved to perform machining. In other words, in the machining step S100, a tap phase that is a spiral groove (male screw) of the tap 10 attached to the movable part 50 of the NC machine via the holder 20 is set to a predetermined value with respect to the movable part 50 of the NC machine. This is a method of processing while fixing the tap phase.

  In step S <b> 110, the worker attaches the tap 10 to the holder 20. At this time, since the tongue 12 and the insertion opening 26 are fitted, the tap 10 is restricted from rotating in the circumferential direction with respect to the holder 20.

  In step S110, there is no need to pay particular attention to the phase of the tap 10 attached to the holder 20, that is, the position of the spiral groove (male thread) of the tap 10 with respect to the holder 20.

  In step S <b> 120, the worker puts the cap 30 on the tap 10 attached to the holder 20 and tightens it. At this time, it is assumed that the tap 10 is firmly tightened to a position (current phase) where the tip of the tap 30 reaches the uppermost end of the female screw 35 of the cap 30.

  In step S <b> 130, the operator moves the first mark 22 of the holder 20 and the second mark 32 of the cap 30 from the position where the tip of the tap 10 reaches the uppermost end of the female screw 35 of the cap 30 (current phase). The cap 30 is turned in the direction of loosening until it coincides with the direction (predetermined phase).

  In step S130, the first mark 22 and the second mark 32 first coincide with each other in the circumferential direction from the position (current phase) where the tip of the tap 10 reaches the uppermost end of the female screw 35 of the cap 30 ( It is desirable to loosen the cap 30 until a predetermined phase). However, for example, the first mark 22 and the second mark 32 in the second and third rounds coincide with each other in the circumferential direction from the position (current phase) where the tip of the tap 10 reaches the uppermost end of the female screw 35 of the cap 30. The position (predetermined phase) may be used.

  In step S140, the operator uses the adjusting mechanism 25 of the holder 20 so that the length L from the lower end of the flange 23 of the holder 20 to the tip of the cap 30 in the axial direction becomes a predetermined length L1. Adjust the protruding amount of the tap 10. That is, in step S <b> 140, the adjustment mechanism 25 adjusts the insertion amount of the tongue 12 in the tap 10 into the insertion opening 26 in the holder 20. At this time, the length L is confirmed by the dial gauge 40. The predetermined length L1 is set in advance.

  In step S150, the operator rotates the cap 30 in the loosening direction with respect to the tap 10, removes the cap 30 from the tap 10, and in step S160, attaches the holder 20 to the movable unit 50 of the NC machine and performs processing.

The operation of the processing step S100 will be described with reference to FIG.
In FIG. 3, the operations from step S110 to step S10 of the machining step S100 are schematically shown for each step.

  In step S <b> 110, the tap 10 is attached to the holder 20.

  In step S <b> 120, the cap 30 is tightly tightened on the tap 10 until a position (current phase) where the tip of the tap 10 reaches the uppermost end of the female screw 35 of the cap 30.

  In step S130, the cap 30 attached to the tap 10 is moved from the position (current phase) where the tip of the tap 10 reaches the uppermost end of the female screw of the cap 30 to the second mark 22 of the holder 20 and the second of the cap 30. The mark 32 is rotated in the circumferential direction and loosened to a position (predetermined phase) where the mark 32 coincides with the circumferential direction.

  In step S <b> 130, a gap (phase difference) is generated between the tip of the tap 10 and the uppermost end of the female screw 35 of the cap 30.

  That is, in step S130, the position (predetermined phase) where the first mark 22 and the second mark 32 coincide in the circumferential direction from the position (current phase) where the tip of the tap 10 reaches the uppermost end of the female screw 35 of the cap 30. ) Is converted into the axial length of the tap 10 to which the cap 30 is attached.

  In step S140, the protruding amount of the tap 10 from the holder 20 is adjusted so that the length L from the lower end of the flange 23 of the holder 20 to the tip of the cap 30 in the axial direction becomes the predetermined length L1.

The effect of the processing step S100 will be described.
According to the processing step S100, the phase of the tap 10 can be adjusted to a predetermined phase for processing.

  That is, according to the machining step S100, in step S130, the “phase difference” from the “current phase” to the “predetermined phase” of the tap 10 with respect to the holder 20 is converted into an axial length, and in step S140, the conversion is performed. In step S150, the cap 30 is removed from the tap 10 and the holder 20 is attached to the movable part 50 of the NC machine in step S160. Therefore, the tap 10 can be adjusted with respect to the movable part 50 of the NC machine, and the phase of the screw hole processed by the movable part 50 of the NC machine can be adjusted.

  Further, since the phase of the tap 10 can be adjusted to a predetermined phase, for example, even when the tap 10 attached to the holder 20 is replaced a plurality of times, the phase of the tap 10 with respect to the movable part 50 of the NC machine is predetermined. The phase of the screw holes machined by the movable part 50 of the NC machine can be aligned with a predetermined phase.

  According to the processing step S100 of the present embodiment, when the phases of the taps 10 are aligned with a predetermined phase, the total length in the axial direction of the tap 10 and the holder 20 due to individual differences in the dimensions of the taps 10 or the like. There will be variations. However, since the tap 10 of the present embodiment has a through hole formed in the cylinder head of an automobile engine, variations in the overall length of the tap 10 and the holder 20 are particularly problematic when the through hole is formed. Absent.

10 tap 20 holder 22 first mark 25 adjustment mechanism 30 cap 32 second mark 50 NC machine 100 processing apparatus S100 processing step

Claims (2)

A processing device for adjusting a phase of a tap attached to a processing device main body via a holder to a predetermined phase with respect to the processing device main body,
The processing apparatus body includes a movable part to which the holder is attached,
The holder includes an adjustment mechanism in which a first mark is marked at a predetermined position in the circumferential direction, and an axial length of the holder and the tap is adjusted.
A cap screwed into the tap and marked with a first mark at a predetermined position in the circumferential direction;
Processing equipment. A processing method for processing by adjusting the phase of a tap attached to a processing apparatus main body via a holder to a predetermined phase with respect to the processing apparatus main body,
The processing apparatus body includes a movable part to which the holder is attached,
The holder includes an adjustment mechanism in which a first mark is marked at a predetermined position in the circumferential direction, and an axial length of the holder and the tap is adjusted.
A first step of covering the tap with a cap marked with a first mark at a predetermined position in the circumferential direction and tightening to a predetermined position of the tap;
A second step of loosening the cap from the predetermined position so that the circumferential positions of the first mark and the second mark coincide;
A third step of adjusting the axial length of the holder and the cap to a predetermined length by the adjustment mechanism;
Comprising
Processing method.

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