JPH09267209A - Trimming cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cause an inclination with a slight wearing phenomenon and enable even the hole edge of a non-circular to be worked. SOLUTION: A trimming cutter 1 used in a trimming tool for trimming a hole edge has cutting edges 17, 18 on the front surface and rear surface. These trimming cutting edges are formed on the front surface part 30 of the trimming cutter, and the front surface end of the front surface part 30 of the trimming cutter is formed as a spherical member accompanied with a sliding part 16 formed on the front surface side of trimming cutter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deburring blade used in a deburring tool for deburring a straight or non-circular hole edge.

[0002]

2. Description of the Related Art A deburring tool using such a conventionally known deburring blade (also called tilting blade) has already been disclosed in German Patent Specification No. 931024, in which The deburring blade tool is controlled by the rod-shaped groove guide.

Another deburring tool with a deburring blade is disclosed by US Pat. No. 3,008,360, which tilts via a pin which engages the cutting blade.

Yet another deburring tool is known from East German Patent No. 236272, in which a deburring blade is tilted by a cam of a rotatable barrel.

[0005]

However, the control of the deburring blade described in the German patent specification is relatively complicated, and the control of this groove takes into consideration a constant swing angle of the deburring blade. It is not suitable for deburring non-circular hole edges in a delicate manner.

Also, the control of the deburring blade described in the US patent specification is still relatively complicated, and there is a possibility that the area of the groove guide is rapidly worn.

Further, the deburring blade described in the East German patent specification causes a relatively large abrasion phenomenon in biting when the deburring blade tilts.

Therefore, an object of the present invention is to improve the deburring blade used for the deburring tool of the type described above, to allow the deburring blade to be tilted by a slight abrasion phenomenon, and the deburring blade within its operating range of motion. A certain small swing motion is to be performed so that a non-circular hole edge can be machined.

[0009]

The invention according to claim 1 is a deburring blade as a tilting blade used for a deburring tool for deburring the edge of a hole. The deburring blades (1, 39) have front and back cutting edges (17, 5).
7; 18, 58), these cutting edges being formed in the front part (30) of the deburring blade. The front end of the front portion (30) of the deburring blade is formed as a spherical member with the sliding portion (16) formed on the front side surface of the deburring blade.

The invention according to claim 2 is the deburring blade according to claim 1, wherein at least the front face portion (30).
Are formed rotationally symmetrical with respect to the longitudinal axis of the deburring blade (1, 39). On the circumferential surface of the knife is formed at least one opening which is vertically inwardly partitioned by grooves (38, 59). Cutting edge (17, 18; 5
7, 58) are formed along the line of intersection of the groove (38, 59) and the circumferential surface.

The invention according to claim 3 is the deburring blade according to claim 1 or 2, wherein the cutting edge (17,
18; 57, 58) are formed parallel to the longitudinal axis of the deburring blade.

A fourth aspect of the present invention is the deburring blade according to the first or second aspect, wherein the cutting edge (17,
18; 57, 58) are formed so as to be inclined with respect to the longitudinal axis of the deburring blade.

According to a fifth aspect of the present invention, in the deburring blade according to any one of the first to fourth aspects, the deburring blade (1, 39) is generally composed of two members.
One deburring blade (1) can be inserted into the corresponding lumen (48) of the blade holder (40) and can be fixedly fixed.

According to a sixth aspect of the present invention, in the deburring blade according to the fifth aspect, the deburring blade (39) is formed into a columnar shape, and the bore (48) extends across the blade holder (40). Is provided inside.

The invention as set forth in claim 7 is the deburring blade according to claim 5 or 6, wherein the deburring blade (39) extends inside the deburring blade (39). And a shaft pin (41) extending through the lumen for fixing the deburring blade (39) in its position in the lumen.

The invention as set forth in claim 8 is the deburring blade according to claim 7, wherein the deburring blade (39) is fixed to the rear end face of the deburring blade in the blade holder (40). Configured with a lumen (52) that contacts the.

According to the deburring blade of the present invention, since the deburring blade is provided with a cutting edge, when this cutting edge portion touches the edge of the hole to be deburred,
Deburring is done. In particular, when the deburring tool that locks the deburring blade inserts the deburring blade deep into the hole while rotating in the axial direction, the deburring of the hole edge is efficiently performed.

When the deburring blade is inserted further into the hole, the deburring blade tilts, and the side wall of the hole has
The sliding part will hit. The sliding portion slides to the opening on the opposite side of the hole without cutting the side wall of the hole. The deburring blade comes out on the opposite side of the hole and the deburring blade tilts again. In this state, if you move the deburring blade in the direction opposite to the direction in which the deburring tool was moving, that is, toward the edge of the hole when it was inserted, the other cutting edge of the deburring blade Again, contact the edge of the hole on the opposite side of this hole,
Deburr.

The deburring blade according to the invention therefore has as its essential advantage that the deburring operation is controlled in the tool holder or the blade holder in a structurally simple manner without significant wear. Suitable for In particular, when the deburring hole is non-circular, it is formed so that it can be elastically guided up and down within a certain range, and the working range is expanded.

If the deburring blade is provided with a recess, a bar spring for controlling the deburring blade is elastically engaged with the recess. As a result, elastic cutting characteristics of the deburring blade are achieved within a certain range. At that time, particularly when the deburring hole has a non-circular hole edge, the engagement between the locking device such as a bar spring and the deburring blade is not disengaged when the deburring tool is moved up and down.

When the locking device is a thrust bar guide, the elastic thrust bar engages with the deburring and tilting blade in the axial direction thereof. Thereby, within a certain range, the deburring blade can perform elastic cutting without the engagement device being disengaged and the engagement being disengaged.

If a rod spring or a thrust rod having elasticity in the axial direction or an elastically supported ball engages with the deburring blade in a thrust rod shape, the control of the tilting movement becomes extremely simple by design, and slight abrasion is caused. It can only appear.

Also, instead of engaging the deburring blade in the form of a push rod, another locking device acting as a locking device, in particular controlled by the outside and having its free end engaging in the recess as a kind of locking part. It is also possible to use a single arm lever.

[0024]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) The first embodiment of the present invention is as follows.
It is shown in FIGS. The deburring blade is rotatably supported (supported in a removable state) in a groove-shaped recess 22 (see FIG. 5) provided in the tool holder 2. The recess 22 has a lower opening 23.

On the premise that the recessed portion 22 is so large that the cutting portion 30 of the deburring blade 1 can completely swivel into the recessed portion 22 in the directions of the arrows 27 and 28 (see also FIG. 6),
Instead of the opening 23, the tool holder 2 can be closed. Further, in the present embodiment, two deburring blades (not shown) may be pivotally arranged on a common pivot (longitudinal center axis of the tilting bolt 24) so as to face each other.

In order to swing-support the deburring blade 1, the blade is provided with a hole 3 (FIGS. 1 and 3), in which a bolt 24 is provided.
(Fig. 6) is inserted. The bolt is fixedly supported in the side hole of the tool holder 2. The central axis 4 of the tool holder 2 does not necessarily have to intersect the central axis of the hole 3. According to this embodiment, the hole 3 together with the attached bolt 24 can be arranged in the tool holder 2 while being displaced in the directions of the arrows 25 and 26 (FIG. 6) with respect to the tool holder 3, which will be described later. As described in the modification shown in FIGS. 11 and 12, it is possible to deburr holes of various different diameters by adjusting the cutting phase and using the same deburring blade 1. Deburring blade 1
Comprises a substantially flat member. This member has a cutting portion 3 formed in a round shape with ridges 19 and 20 on one side thereof.
It grows to 0.

The deburring blade 1 or the blade holder 40 in the second embodiment described later is formed into a substantially circular shape. A recess 5 is provided on the upper edge of the flat disk-shaped object. A cam 6 is formed on the edge of this recess. Details of the cam will be described in detail with reference to FIG. The cam comprises a central rounded curve 9, from which curved sides 7 which are exactly symmetrical to each other are formed as side walls via ridges 10 and 11, respectively. Each curved portion 7 includes a steep curved branch portion 8 and a flat curved branch portion 8a. The curved portion 7 mirror-symmetrically follows the central rounded curved portion 9 and forms a distance 34 between the curved portions 7. In this way, the curved portion forms the concave portion 5 with which the locking device arranged on the tool holder side is engaged. According to the example of FIG. 1, the locking device consists of a bending spring or a bar spring 12.
It is formed as a leaf spring, the front free end of which engages in the recess 5. In FIG. 7, this bending spring is represented by a spring rod 1.
It is shown as 2a. The important point is the central contact point 3
3 is formed on the rounded curved portion 9, and the spring thrust rod 12a
The front edge of the front side of the curved portion 7 continues to the side of
To have two. In this regard, as shown in FIG. 1 or FIG. 8 showing a second embodiment described later, the thrust rod 12a or the rod spring 12 can be held in the recess 5 without tilting. Therefore, the rod spring 12 can elastically swing in the direction of the arrow 13 (FIG. 1) while engaging in the recess 5.

As mentioned above, instead of forming the thrust bar as the rod spring 12, a spring-loaded arrangement of the thrust rod in the direction of arrow 14 in FIG. 1 can also be applied. in this case,
The rigid thrust bar 12a receives the spring load and engages in the recess 5 in the direction of the arrow 14. 1 and 7 show the engagement of the bar spring 12 with the thrust rod when the deburring blade is in the deburring position. In this case, as is apparent in the illustration of FIG. 7, the abutment bar contacts the central contact point 33 at the leading edge. By the way, even if the deburring blade 1 abuts the hole edge 36 and the round edge is non-circular and wavy, it is deburred. That is, based on the bending characteristics of the rod spring 12 or the spring characteristics of the thrust rod 12a in the axial direction (direction of arrow 14), the deburring blade 1
Moreover, it is possible to swing at a constant swing angle. Then, the cutting edge 17 is seated so that the shape fits into the non-circular hole edge 36, and the hole edge is deburred while slightly swinging against the spring force of the locking device. is important. At that time, the thrust rod 12a remains within the range of the central rounded curve portion 9 according to FIGS. 4 and 7. The side edge of the cue stick has 31
Alternatively, 32 is filled in to abut on the steep curve branch portion 8 of the curve portion 7. Therefore, the deburring blade 1 cannot swing further. The locking device may be a ball (not shown) arranged in the tool holder 2 under the load of spring, and the ball may be engaged in the recess 5 for locking.

The angle that the cutting edge makes with the hole edge can be varied within relatively wide limits. That is, in order to guarantee the cutting operation at the hole edge 36, it is only necessary to provide a relatively small angle as a minimum condition. When the deburring tool further enters the hole 35 from the cutting position in the direction of the arrow in FIG. 6, the sliding portion 16 formed as the ball portion 15 slides along the side wall of the hole 35, so that any cutting operation is stopped. At this time, a reaction is applied to the deburring blade from the hole edge 36, so that the tip of the stick 12 is disengaged from the curved branch portion 8 on the steep side of the curved portion 7, and the flat curved branch portion 8a is formed.
Reach within. However, the curved branch portion 8a is
Is formed continuously at the steep curve branch portion 8. When the cutting edge 17 is in contact with the hole edge 36, the deburring blade 1
Received a relatively strong reaction from the hole edge 36. However, when the tip of the thrust rod 12 reaches the curved branch portion 8a,
Since the curved branch portion 8a is formed flatter than the steep curved branch portion 8, the reaction acting on the deburring blade in the direction of the arrow 13 is relatively small, and the sliding portion 16 prevents the side wall of the hole from being damaged. You can pass through. That is, also here, the ball portion 15 contacts the inner surface of the hole.

When the deburring blade 1 leaves the side opposite to the through hole (hole 35), the rod spring 12 enters the area of the recess 5 again and reaches the sharp curve branch 8 again. As a result, the deburring blade moves again to the deburring position which is the starting position. When the tool moves in the direction opposite to the arrow 37 direction shown in FIG. 6 (upward in the figure), the cutting edge 18 for deburring arranged at the rear end of the cutting portion causes the opening of the through hole. Deburr the part.

To describe the deburring blade 1 in more detail, the cutting edges 17 and 18 are arranged symmetrically to each other, and the end of the deburring blade in the center direction is moved to the ridge 19. The cutting edges 17 and 18 are rounded and cut. This forms a groove 38 at a lower position, which serves as a guide during cutting. The cutting edges 17 and 18 are
The inner side in the radial direction is one ridge 19. Ridge 19
A ridge 20 is formed on the inner side in the radial direction.
Is connected to the disc-shaped circumferential groove 21 of the deburring blade.

The thrust rod 12a in FIG. 7 is attached to the attachment 29 of the tool holder 2. The fixture 29 itself is firmly connected to the tool holder.

That is, the above-described deburring tool has a simple structure and is capable of automatic deburring while conforming to the uneven hole edges. With the arrangement described above, deburring is possible even for small-diameter holes with a diameter of up to about 2 mm or large-diameter holes with no restriction.

In this case, the tool holder can be made of synthetic resin or metal. Similarly, the deburring blade can be made of synthetic resin. In that case, a cutting plate piece is appropriately used instead of the cutting edge.

(Second Embodiment) Next, a second embodiment of the present invention will be described. The deburring blade 1 in the first embodiment shown in FIGS. 1 to 7 is the same as the deburring blade 39 in the second embodiment shown in FIGS.
The two members divided into and correspond to. Deburring knife 39
Are convertibly arranged in the blade holder 40. The blade holder has a locking recess 5 having the same shape as that described in the first embodiment shown in FIGS. 1 to 7. in this case,
The blade holder 40 is rotatably supported in the recess of the tool holder 2 and is rotatable around the tilting bolt 41. As shown in FIG. 9, the tilting bolt 41 is screwed into the hole 43 of the tool holder 2 and is held by a screw 42 extending laterally as a fixed portion provided slidably in the axial direction. The screw 42 is screwed into its own hole 44, which corresponds to the hole 43. Therefore, the bolt of the screw 42 is supported by one end surface of the tilting bolt 41.

Instead of bearing the tilting bolt in this way, it is of course possible to choose another embodiment in combination with the bolt described here. The tilt bolt 41 can be formed, for example, as a dowel pin or as a simple screw threaded into a suitable screw hole 43.

Referring again to FIG. The rod spring 12 is held in the tool holder 2 by a spring holder 45, which is a tubular part, the center hole of which receives the upper end of the rod spring 12. The bar spring 12 is clamped, welded or glued in this hole. The spring holder 45 is
It has a circumferential groove 46 into which a screw 47 is engaged. In this way, the spring holder 45 and the rod spring 12 are provided with a structure that is clearly fixed in the tool holder 2. That is, the axial length of the rod spring 12 is extremely important in ensuring that the rod spring 12 is accurately engaged with the region of the recess 5 of the blade holder 40. The spring holder 45 is the rod spring 12
The whole is fixed slidably in the tool holder 2 in the axial direction of the rod spring 12.

The important point in this second embodiment is that the blade 3
9 is replaceably held in a laterally extending hole 48 in the blade holder 40. In this case, the holding of the cutting tool 39 is performed by inserting the cutting tool 39 into the hole 48 of the cutting tool holder 40 as shown in FIGS. 16 to 18. Therefore, in the hole 48, the cutting blade 39
It is the lateral holes 50 that help to fix the length of the. This hole intersects the hole 48, as shown in FIG. The tilt bolt 41 is simultaneously inserted into the lateral hole 50, and the bolt itself is held in the hole 43 of the main body 2.

In this way, the blade 39 is held in the blade holder 40 by the single tilting bolt 41, and the tilting bolt 41 can simultaneously form a rotary bearing for the blade holder 40 in the main body 2. Therefore, the cost can be reduced.

At the same time, the tilting bolt 41 is attached to the blade holder 4
It forms a zero internal rotation bearing and also serves to support the blade 39 centrally. Since the blade 39 is supported in the hole 48 of the blade holder 40 in an optimum state, a strong force can be transmitted to the blade holder 40.

Another lateral hole 51 is arranged at a distance from the hole 50 in the radial direction. This serves as an aid to the assembly, ie to facilitate the assembly of the blade 39. That is, as shown in FIG. 39, the blade 39 has the prismatic recess 52 on the rear end face. To assemble the blade,
First, the locking pin 54 is driven into the lateral hole 51. Next, the blade 3
9 is inserted into the hole 48 with the prismatic recess 52, which is the end face, facing rearward. The central axis is adjusted by bringing the outer peripheral surface of the stop pin 54 into close contact with the prismatic recess 52. Accordingly, the hole 53 of the blade 39 and the hole 50 of the blade holder 40 can be aligned at the same time. The blade 39 thus preliminarily assembled is inserted into the main body 2 together with the blade holder 40. Next, the tilting bolt 41
It is inserted into the holes 43, 50 and 53 aligned with one another and then fixed with screws 42.

That is, when the stopper pin 54 abuts on the prismatic recess 52, the holes 43, 50 and 53 are subsequently arranged in a straight line so as to oppose each other, and the tilting pin 41 is pushed in. At, the central axis of the blade 39 can be aligned.

It should be noted that the reason why the hole 48 for accommodating the deburring blade 39 is formed as a through hole is that it is simple in manufacturing technology.

Compared with the above-described first mode (FIGS. 1 to 7), the second mode (FIGS. 8 to 18) shows a deburring blade 39.
The configuration of the cutting part is different. In the first mode (FIG. 1), the two diagonal cutting edges 17 and 18 correspond to each other.
In the deburring blade, linearly formed cutting edges 57 and 58 which are parallel to each other face each other. There is no change in the configuration of the end surface of the deburring blade 39. That is, the ball portion 15 is provided and the sliding portion 16 formed on the outer peripheral surface is provided. Its function is as described above in the first embodiment. Cutting edges 57 and 58 formed in a straight line and parallel to each other
In the case of arranging, there is an advantage that the action of the cutting edge on the workpiece becomes more effective. This is because the tilting blade tends to tilt with the cutting blades arranged obliquely, which causes pressure in the tilting direction. However, in the case of the cutting edges 57 and 58 that are arranged parallel to each other and extend linearly, the pressure in the tilting direction is not as strong as in the case of the first embodiment. That is, the blade shown in FIG. 13 can be more effectively cut without applying a large pressure in the tilting direction to the locking mechanism. By the way, the straight cutting edge can be processed more easily than the above-mentioned oblique cutting edges 17 and 18 for the reason of manufacturing technology.

When considered in combination with FIGS. 14 and 15, the shapes of the rake face 59 and the flank face 60 behind it become apparent. As shown in FIG. 14, this clearance surface has a clearance angle 61
To form

Different from FIGS. 8 to 10, FIGS. 11 and 12 show a modification of the second embodiment. 11 and 12
The deburring blade 39, which is slightly tilted in the direction of the arrow 27, is still capable of cutting, as will be described later in detail. That is, when the deburring blade 39 is in the tilted position shown in FIGS. 11 and 12, the cutting surface 57 or 58 is still engaged with the workpiece.

According to FIG. 8, a hole for the tilting bolt 41 is shown at the location of the deburring blade 39. That is, the line of action of the rod spring 12 exactly intersects the center line of the hole for the tilting bolt 41. On the other hand, in the modified embodiment shown in FIGS. 11 and 12, the tilting bolt 41 is arranged at a position eccentric with respect to the action of the rod spring 12. As is apparent from this drawing, the tilting bolt 41 is provided with the rod spring 1
Forward from the line of action, which is the center of 2, the deburring blade 3
It is offset by a distance 64 in the direction of the cutting edges 57, 58 facing each other. Therefore, the blade holder 40 is the tool holder 2
Is arranged at a position eccentric to the lateral center line of the.
Therefore, it is also included in the features of the present invention that the tool holder 2 can be swung at an eccentric position in the recess.

When the entire blade holder is eccentrically supported in the main body as in the modified embodiment shown in FIGS. 11 and 12, various holes having different diameters should be deburred depending on the situation of implementation. You can For example, when deburring a hole having a diameter of 13 mm, the blade holder 40 is accurately centered in the main body 2. However, when deburring a hole with a diameter of 14 mm, the tilting bolt 41 together with the hole is moved to the right by a distance 64 (0.5 mm) in the blade holder and the diameter is 14 mm.
Deburr the hole. Further, for example, when deburring a hole having a diameter of 12 mm, a position shifted to the left by a distance 64 (0.5 mm) is selected. That is, the tilting bolt 41
Is arranged eccentrically to the left in the body 2 so that a hole with a diameter of 12 mm can always be deburred with the same blade. Therefore, the demand for replacement parts is essentially reduced. I mean,
The same blade holder 40 and deburring blade 39 can always be used, and the main body 2 has a hole 43.
This is because the same thing can always be used except for the arrangement. Depending on the circumstances at each time, the holes are arranged in the main body in a centered, forward or rearward manner.

(Preferable Deburring Blade Mode) (1) Deburring of a straight or non-circular hole by deburring the edge by being locked by a deburring tool for deburring and tilting The deburring blade (1, 39) is a blade, and a deburring blade (17, 18; 57, 58) provided on at least a part of the deburring blade and a tip portion of the deburring blade following the cutting edge. Sliding part (1
5) and, when the deburring blade is engaged with the deburring tool and inserted into the hole, the cutting edge comes into contact with the edge of the hole to deburr the edge, The sliding portion comes into contact with the side wall of the hole when the deburring blade is further inserted into the hole and tilted by the reaction force from the side wall of the hole, and corresponds to the movement of the deburring tool. A deburring blade characterized by sliding along a side wall.

(2) In the deburring blade according to claim 1, the deburring blade (1, 39) is formed in a symmetrical structure with respect to the longitudinal axis of the deburring blade. A groove (38; 59) formed parallel to the longitudinal axis of the deburring blade is formed on at least one end of the deburring blade, and an inner surface of the groove is formed at a portion intersecting a side surface of the deburring blade. , The cutting edge (17, 1,
8; 57, 58) is provided.

(3) The cutting edges (17, 18; 57, 5)
The deburring blade according to claim 1 or 2, wherein the ridgeline of 8) is provided parallel to the longitudinal axis of the deburring blade (1, 39).

(4) The cutting edges (17, 18; 57, 5)
The deburring blade according to claim 1 or 2, wherein the ridgeline of 8) is provided so as to be inclined with respect to the longitudinal axis of the deburring blade (1, 39). .

(5) The deburring blade (39, 40)
Comprises a cutting edge member (39) provided with the cutting edge, and a holder member (40) for locking the cutting edge member and being locked by the deburring tool. The deburring blade according to any one of claims 1 to 4, which is characterized.

(6) The cutting edge member (39) is formed in a columnar shape, and the cutting edge member is inserted into a hole (48) provided across the holder member. The deburring blade according to item 5.

(7) The cutting edge member (39) has a hole (53) formed in the width direction of the cutting edge member and the cutting edge member (39) at a predetermined position in the hole. Deburring blade according to claim 5 or 6, characterized in that a shaft pin (41) for fixing is provided.

(8) The cutting edge member (39) is provided with a groove (52) on its rear end surface for contacting a fixing pin (54) provided on the holder member (40). The deburring blade according to claim 7.

(9) The deburring blades (1, 40) are engaged with a locking device provided in the deburring tool,
Further, the deburring blade is engaged in a posture in which the cutting edge (17, 18; 57, 58) deburrs the edge of the hole, the cutting edge is inserted inside the hole, and the sliding portion is the side wall of the hole. The deburring blade according to claim 1, further comprising a recessed portion (5) having a shape for releasing the engagement of the deburring blade in a posture of abutting against the deburring blade.

[0059]

As described above, according to the present invention,
It is possible to deburr the hole edge having irregularities by a structurally simple method, and it is possible to provide a deburring blade with less abrasion of the eyelashes.

[Brief description of drawings]

FIG. 1 is a schematic side view of a deburring blade according to a first embodiment of the present invention.

FIG. 2 is a plan view of the deburring blade of FIG. 1 seen from the direction of arrow II in FIG.

FIG. 3 is a plan view of the deburring blade seen from the direction of arrow III in FIG.

FIG. 4 is an enlarged front view of the cam of the deburring blade.

5 is a view of the deburring blade incorporated with the tool holder as seen from the direction of arrow V in FIG.

6 is a view of the tool holder and the deburring blade as viewed in the direction of arrow VI in FIG.

FIG. 7 is an enlarged view of the linear bending spring engaged with the cam of the deburring blade.

FIG. 8 is a sectional view of a deburring tool.

9 is a side sectional view showing a deburring tool including a tool holder, a deburring blade, and a blade holder rotated by 90 ° from FIG.

FIG. 10 is a sectional view taken along line XX of FIG. 8;

FIG. 11 is a cross-sectional view of the deburring blade of FIG. 8 at the time of processing engagement when processing a larger hole diameter.

FIG. 12 is a sectional view taken along the line XII-XII of FIG. 11;

FIG. 13 is a cross-sectional view of a compatible blade.

14 is a cross-sectional view taken along line XIV-XIV of FIG.

FIG. 15 is a plan view of the blade of FIG. 13 rotated by 90 °.

FIG. 16 is a plan view of a blade holder.

17 is a sectional view taken along line XVII-XVII in FIG.

FIG. 18 is a plan view of the blade holder shown in FIG. 16 as viewed in the direction of arrow XVIII.

[Explanation of symbols]

 1, 39 ... Deburring blade 2 ... Tool holder 3, 35, 43, 44, 48, 53 ... Hole 4 ... Central axis 5, 22, 52 ... Recessed portion 6 ... Cam 7 ... Curved portion 8, 8a ... Curved branch portion 9 ... Round curve portion 10, 11, 19, 20 ... Edge 12 ... Rod spring 12a ... Cushion rod 15 ... Ball portion 16 ... Sliding portion 17, 18, 57, 58 ... Cutting edge 21 ... Circumferential groove 23 ... Opening 24 ... Bolt 29 ... Fixture 30 ... Cutting part 31, 32 ... Free play 33 ... Contact point 34, 64 ... Distance 36 ... Hole edge 38, 46 ... Groove 40 ... Blade holder 41 ... Tilt bolt 42, 47 ... Screw 45 ... Spring holder 50 , 51 ... Side hole 54 ... Stop pin 59 ... Rake surface 60 ... Relief surface 61 ... Relief angle

Claims (8)

[Claims] 1. A deburring blade as a tilting blade used for a deburring tool for deburring an edge of a hole, wherein the deburring blade (1, 39) comprises front and rear cutting edges (17). , 57; 18, 58), and these cutting edges are formed in the front part (30) of the deburring blade, and the front end of the front part (30) of the deburring blade is the deburring blade. A deburring blade characterized in that it is formed as a spherical member with a sliding portion (16) formed on the front side surface thereof. 2. The deburring blade according to claim 1, wherein at least the front surface portion (30) is rotationally symmetrical with respect to the longitudinal axis of the deburring blade (1, 39). Grooves (38, 59) on the circumferential surface of
Forming at least one opening which is partitioned radially inward by means of said cutting edge (17, 18; 57, 5
The deburring blade 8) is formed along a line where the groove (38, 59) intersects with the circumferential surface. 3. The deburring blade according to claim 1 or 2, wherein the cutting edges (17, 18; 57, 58) are formed parallel to the longitudinal axis of the deburring blade. A deburring blade characterized by being present. 4. The deburring blade according to claim 1 or 2, wherein the cutting edges (17, 18; 57, 58) are formed to be inclined with respect to a longitudinal axis of the deburring blade. A deburring blade characterized by being present. 5. The deburring blade according to any one of claims 1 to 4, wherein the deburring blade (1, 39) is generally composed of two members, and one deburring blade (1) is , Which can be inserted into the corresponding lumen (48) of the blade holder (40),
A deburring blade characterized in that it can be firmly fixed. 6. The deburring blade according to claim 5, wherein the deburring blade (39) is formed in a columnar shape and is provided in an inner cavity (48) extending across the blade holder (40). A deburring blade characterized by that. 7. The deburring blade according to claim 5 or 6, wherein the deburring blade (39) is the deburring blade (3).
9) provided with a lumen (53) extending across it, and a shaft pin (41) extending through the lumen for fixing the deburring blade (39) in its position in the lumen. Deburring blade characterized by. 8. The deburring blade according to claim 7, wherein the deburring blade (39) contacts a pin (54) fixed in the blade holder (40) at a rear end surface thereof. A deburring blade having (52).