JPH0818192B2 - Deburring device for deep hole groove - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deep hole groove deburring device which removes burrs formed when a groove is formed in a deep hole of a precision part using ultrahigh pressure water.

[0002]

2. Description of the Related Art A deburring process for a work, which has a circumferential machining inside a deep hole for a spool such as a hydraulic control valve and which needs to remove burrs generated at the peripheral edge of the machining part, has been conventionally performed. A deburring device for high-pressure water has been used, which is mainly designed for manual removal or for ejecting high-pressure water from a nozzle inserted in a deep hole to remove the burr. In this conventional deburring device, the nozzle for injecting high-pressure water is used in a fixed state without rotating. That is, when removing the burrs formed in the deep hole groove, first, the burr in the deep hole groove is removed as much as possible with the nozzle in the fixed state, and the remaining portion is manually removed to finish.

[0003]

However, this conventional deburring device has a problem that the work efficiency is very poor because it must be finished by hand as described above. Most of the workpieces are made of aluminum, but 700 to 10 is required to remove burrs produced by cutting aluminum etc. by fluid injection.
There is a problem that ultra-high pressure water of 00 kgf / cm ² is required, and when the ultra-high pressure water is applied to the burr portion with a non-rotating nozzle, the machined surface of aluminum may be scratched. The present invention has been made to solve such conventional problems, and the purpose thereof is to completely and efficiently remove burrs formed in deep hole grooves of precision parts from scratches on the processed surface. Another object of the present invention is to provide a deburring device for a deep hole groove that can be removed.

[0004]

As means for achieving the above object, in a deburring device for deep hole grooves of the present invention, a nozzle for injecting ultra-high pressure water; and a movement for advancing and retracting the nozzle or deburring work. A rotating means for rotating the nozzle on an axis; a speed of the moving means and a rotating speed of the nozzle are switched to a low speed at a deburring position of the work, and the rotating means of the moving means is operated at a position other than the deburring position of the work. A control device for switching the speed and the rotation speed of the nozzle to a high speed; The ultra-high pressure water used in the present invention includes up to about 1500 kgf / cm ² .

[0005]

In the deburring device for a deep hole groove of the present invention, high-pressure water can be jetted by rotating the nozzle. Therefore, by jetting ultra-high-pressure water along the burr formed on the groove edge of the deep hole. The burr around the entire circumference of the hole can be removed only by the nozzle. Further, after moving the nozzle or the work until the nozzle is aligned with the deburring position of the work by the moving means, the speed of the moving means and the rotation speed of the nozzle are switched to a low speed at the deburring position of the work by the control device. The burr can be completely removed by ejecting the ultra-high pressure water for a required time. Further, except for the deburring position of the work, the speed of the moving means and the rotation speed of the nozzle are switched to high speed, and then the inside of the hole is moved at high speed to the next deburring position while jetting the ultra-high pressure water. . This allows
The inner surface of the deep hole will not be damaged because it receives high pressure of ultra-high pressure water only momentarily to one point. Moreover, since the ejection of the ultra-high pressure water can be ejected without interruption, it is possible to efficiently and continuously perform deburring.

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a plan view showing a deep hole groove deburring device of this embodiment, FIG. 2 is a side view of the same, FIG. 3 is an explanatory view showing a deburring state, and FIG. 4 is a sectional view showing an example of a work. 5
Is a cross-sectional view showing a rotary joint, FIG. 6 is a flow chart showing the operation procedure of the nozzle, and FIG. 7 is a graph showing the operation timing of the nozzle. First, the configuration will be described with reference to the drawing. The deep hole groove deburring apparatus A of the present embodiment is a machine frame 1
, Nozzle table 2, nozzle 3, nozzle motor 4, rotary joint 5, and work table 6
And the control device 7 are the main components.

[0007] The machine frame 1 has a waterproof wall 10 at the top,
The nozzle table 2, the work table 6 and the like are arranged in the waterproof wall 10.

The nozzle table 2 serves as a moving means for attaching the nozzle 3, the rotary joint 5 and the like, and for moving the nozzle 3 forward and backward and left and right, and a pair of left and right adjustments are made in the waterproof wall 10 toward the left and right. Rails 20, 2
0 is fixed, and the lower frame 21 is slidably mounted on the left and right adjustment rails 20 and 20 via shoes 20a and 20a. An upper frame 22 is fixed to the lower frame 21, and a pair of front and rear adjusting rails 22a, 2 are provided on the upper surface of the upper frame 22 in the front-rear direction.
2a is fixed.

The front and rear adjusting rails 22a, 22a are provided with
The upper table 23 is slidably mounted back and forth via the shoes 23a, 23a. Further, a screw shaft 24 is supported between the lower frame 21 and the upper frame 22 by a bearing 24a on the lower frame 22 side in the front-rear direction. A female screw 24b extending from the lower surface is screwed. Further, the screw shaft 2
A step motor 25, the number of rotations of which is regulated by a control signal, is connected to one end of No. 4.

The nozzle 3 is 700 kgf / cm ² from the tip.
It ejects a certain amount of ultra-high pressure water, has a rod shape, and has a nozzle hole 30 at the tip in a direction orthogonal to the axis.
It is provided in several places. Further, the nozzle 3 is arranged horizontally with its front end facing forward, and its rear end is at the upper base 23.
Is rotatably connected to a spindle 31 fixed to the front of the. The rear end of the spindle 31 is connected to the rotary joint 5 so that the super high pressure water supplied through the rotary joint 5 is introduced to the nozzle hole 30 at the tip. Reference numeral 32 in the drawing denotes a pulley fixed to the rear portion of the nozzle 3.

The nozzle motor 4 serves as a rotating means for rotating the nozzle 3 at high speed or at low speed in response to a control signal, and is arranged on the upper table 23 in parallel with the nozzle 3 and fixed to the output shaft. The pulley 40 is connected to the pulley 32 of the nozzle 3 by an endless belt 41.

The rotary joint 5 supplies ultra-high pressure water to the rotating nozzle 3, and as shown in FIG. 5, a floating seat 52 is provided in a seal hole 51 provided at one end of the casing 50. The shaft portion 52a is slidably fitted. In addition, the other end of the casing 50 has a ring-shaped insert seal 5 on the inner end face side.
A rotary tube shaft 53 fitted with 3a is pivotally supported by a ball bearing 54. The ring-shaped insert seal 55a, which is the center of the reinforcing disc 55 and is shrink-fitted evenly in the axial direction, is attached to the floating seat 52 and the rotary tube shaft 5.
3, the flange portion 52b of the floating sheet 52 and the reinforcing disc 55 are axially slidably locked by the locking means 56. Then, the flange portion 52b is attached to the spring 5
By biasing in the direction of the rotary pipe shaft 53 with 7, the flow passage 52c of the floating sheet 52 and the flow passage 5 of the rotary pipe shaft 53 are formed.
3b is communicated in a sealed state. Reference numeral 58 in the drawing denotes a flow path of the casing 50 connected to the supply source side of the ultrahigh pressure water.

The work table 6 is for fixing the work w at the time of deburring to the upper surface, is formed so as to be adjustable in the front-back and up-down directions, and is the upper part of the machine frame 1.
It is arranged at a position facing the front side of the nozzle table 2. 3 and 4, 60 is a deep hole of the work w, 61A, 61B and 61C are grooves, a ₁ and a ₂ are grooves 6.
Corners on both sides of 1A, b ₁ and b ₂ are corners on both sides of the groove 62B, and c ₁ and c ₂ are corners of the groove 61C. Reference numeral 62 is a burr formed on the corners a ₁ and a ₂ of the groove 61A.

The control device 7 controls the step motor 25 of the nozzle table 2 and the nozzle motor 4, and as shown in FIG. 2, a setting input unit 70, a central processing unit 71, and a central processing unit 71. , And a control unit 72. The setting input unit 70 is for inputting a deburring position from the reference point of the work w. In addition, the central processing unit 7
1 executes a program by the data input from the setting input unit 70, and outputs a signal for controlling the step motor 25 and the nozzle motor 4. In addition, the control unit 72 uses the signal from the central processing unit 71 to rotate the step motor 25 and the nozzle motor 4 and start the motor.
It controls the stop.

Next, the operation of this embodiment will be described. First,
While making the nozzle 3 stand by at the starting point position, the work w is fixed to the upper surface of the work table 6, and the nozzle 3 and the deep hole 60
And align the front-back direction with a predetermined reference point. Then, according to the drawing of the work w, the grooves 61A, 61
The positions of B and 61C are input from the setting input section 70 to start the program. This will be described with reference to the flowchart of FIG. 6 and the graph of FIG. 7. First, the nozzle 3 is advanced at high speed from the starting point position to the corner a ₁ of the first groove 61A (step 101). Next, ultra-high pressure water (700 kgf / cm ² ) is supplied from the rotary joint 5 to eject the ultra-high pressure water from the nozzle 3 (step 102). Further, the nozzle 3 is rotated at a low speed (step 103), and at the same time, the nozzle 3 is advanced to the next corner a ₂ at a low speed to form burrs 62, 62 at the corner.
Are removed (step 104). Next, the nozzle 3 is rotated at a high speed while supplying the ultra-high pressure water (step 105),
Further, it is advanced at a high speed to the next groove 61B (step 1
06). Then, deburring is performed in the groove 61B in the same flow as described above (step 107). Next, after the last programmed groove 61C is similarly deburred, the supply of the super high pressure water is stopped and the rotation of the nozzle is also stopped (step 108), and the nozzle 3 is retracted to the starting point position and stopped. (Step 109).

Next, the operation of the rotary joint 5 will be described. The rotary joint 5 of this embodiment is 700 kgf /
Since high pressure water of cm ² is used, high pressure acts on each part. However, in the reinforcing disk 55, the insert seal 55a is shrink-fitted evenly in the axial direction, and the compressive force applied to the insert seal 55a by this shrink-fitting causes the insert seal 55a to be subjected to an ultrahigh pressure.
Has the effect of reducing the tensile force acting on
Since the cross-sectional shape has no stepped portion, etc., stress acts evenly,
The insert seal 55a is not damaged by an irregular force.

As described above, in the deep hole groove deburring apparatus A of this embodiment, the burrs 62 formed on both sides of the deep hole 60 at a plurality of groove positions are successively formed. It can be removed by a rotating shower of ultra-high pressure water. Further, since the ultra-high pressure water is not stopped while a plurality of deburring operations are performed, deburring can be performed efficiently and wear of equipment such as valves is reduced. In addition, since the nozzle is rotated at a high speed and moved forward at a high speed in the burrs-free portion, the ultra-high pressure water hits only one point instantaneously, and even a soft work such as aluminum does not damage the work surface.

The embodiment of the present invention has been described above with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and design changes and the like within the scope not departing from the gist of the invention. Even if it exists, it is included in the present invention. For example, in the embodiment, the nozzle side is moved forward to align the nozzle 3 with the deburring position, but the invention is not limited to this, and the work side may be moved.

Further, in the embodiment, the deburring of the nozzle 3 is performed only by advancing, but the invention is not limited to this. A driving unit for moving the lower frame 21 to the left and right is provided, and a workpiece provided in parallel by a program is provided. You may form so that a deep hole may be processed continuously one line at a time.

In the embodiment, the deburring position of the nozzle 3 is determined by executing the program based on the data input from the setting input section. However, the present invention is not limited to this, and a sensor using light, ultrasonic waves, etc. Alternatively, a model for copying may be provided on the work table 6, and the model may be detected by a sensor for positioning.

Not limited to the embodiment, the number and direction of the nozzle holes of the nozzle 3, the structure of the nozzle table 2 and the like can be set arbitrarily.

[0022]

As described above, since the deep hole groove deburring device of the present invention has the above-described structure, a plurality of burrs formed when the deep hole is grooved is not required to be manually operated. The effect that they can be removed one after another is obtained.

Further, during the deburring, even if the nozzle is moved while supplying the super-high pressure water, the effect of not damaging the machined surface of the deep hole can be obtained.

Further, since it is not necessary to stop the ultra-high pressure water every time it passes the deburring position, it is possible to reduce the wear of the equipment such as the valve, and it is possible to continuously and efficiently without loss of time. The effect of being able to work is obtained.

Further, since the deburring position of the nozzle is determined by the control device, not visually, only the burrs can be accurately removed, and the effect that the finishing can be performed without forgetting to remove the burrs is obtained. .

[Brief description of drawings]

FIG. 1 is a plan view showing a deburring device for deep hole grooves according to an embodiment of the present invention.

FIG. 2 is a side view showing a deburring device for a deep hole groove.

FIG. 3 is an explanatory diagram showing a deburring state.

FIG. 4 is a cross-sectional view showing an example of a work.

FIG. 5 is a sectional view showing a rotary joint.

FIG. 6 is a flowchart showing an operating procedure of a nozzle.

FIG. 7 is a graph showing operation timings of nozzles.

[Explanation of symbols]

 A Deep hole groove deburring device w Workpiece 2 Nozzle table (moving means) 3 Nozzle 4 Nozzle motor (nozzle rotating means) 5 Rotary joint (nozzle rotating means) 7 Control device 20 Left / right adjustment rail 22a Forward / backward adjustment Rail 24 screw shaft 25 step motor 31 spindle 61A, 61B, 61C groove (deburring position) 70 setting input unit (control device) 71 central processing unit (control device) 72 control unit (control device)

Claims (1)

[Claims] 1. A nozzle for injecting ultra-high pressure water; a moving means for advancing and retracting the nozzle or a work for deburring;
Rotating means for rotating the nozzle on the axis; speed of the moving means and rotation speed of the nozzle are switched to a low speed at a deburring position of the work, and speed of the moving means and the nozzle at a position other than the deburring position of the work. And a control device for switching the rotation speed of the high speed to a high speed, and a deburring device for a deep hole groove.