JPH07115294B2 - Taper honing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a taper honing machine, and more particularly to a honing machine that simultaneously performs grinding and honing simultaneously while positively cutting a taper inner diameter surface.

[0002]

2. Description of the Related Art Honing is one of the processing methods for finishing the radial surface of a work (workpiece), for example, the inner diameter surface of the work, into a mirror surface. In honing, the honing grindstone and the work are kept in a relatively floating state, and the honing grindstone is rotated and reciprocated to perform precise finishing on the inner diameter surface of the work by expanding the honing grindstone by spring resilience. .

In the honing process, a honing grindstone is pressed against a work with a constant pressure (spring elastic force) to gradually scrape the inner diameter surface of the work.
Unlike grinding, it does not forcibly cut a certain dimension by making a certain cut. Therefore, as pre-processing, high-quality finishing such as precision boring, reamer threading, and grinding is generally performed following the processing with a drilling machine or boring machine.

With respect to this point, recently, various improved honing machines have been developed and proposed which perform honing processing with high pressure and large finishing amount, as in the case of grinding processing. According to these honing machines, it is possible to adopt a processing method in which the pre-processing by the drilling machine or the boring machine is suddenly shifted to the honing processing by omitting the grinding processing, that is, the conventional grinding processing and the honing processing are combined. As a result, efficient and precise finishing can be realized.

[0005]

However, since the honing is a processing method in which the honing grindstone is rotated and reciprocated as described above, the honing machine has the same straight cylindrical inner diameter surface, that is, the entire length. It is intended to machine an inner diameter surface having an inner diameter, and cannot be applied to machining a tapered inner diameter surface where the inner diameter continuously changes.

That is, in the above improved honing machine, the honing grindstone is made to have a certain depth of cut to forcibly scrape off the inner diameter surface. For a tapered inner diameter surface whose inner diameter changes continuously in the axial direction, even if the grinding wheel surface of the honing grindstone has a tapered surface shape, the whetstone surface is tightly fitted into the tapered inner diameter surface in a wedge shape. It is because

Therefore, in order to finish the taper inner diameter surface into a mirror surface, the conventional complicated machining method, that is, the machining with a drilling machine or boring machine, is followed by high-quality finishing processing such as precision boring, reaming, and grinding. After that, it was the actual situation that lapping that required skill and honing using a conventional honing machine were performed.

By the way, in the honing of the taper inner diameter surface by this conventional general honing machine, the grindstone surface of the honing grindstone is formed into a taper surface, and this taper grindstone surface is the above-mentioned taper inner diameter due to a constant spring resilience. It is a method that is pressed against the surface and did not make a positive cut.

The present invention has been made in view of such conventional problems, and an object of the present invention is to simultaneously perform grinding and honing simultaneously while positively cutting a tapered inner diameter surface. The purpose is to provide a honing machine having a configuration capable of

[0010]

In order to achieve the above object, the honing machine of the present invention is capable of reciprocating in the axial direction of the taper radial surface of the workpiece and is rotatably supported around the axis. A main spindle rotating means for rotating and driving the main spindle around an axis, and a main spindle reciprocating means for reciprocating the main spindle in the axial direction of the taper diameter surface,
A honing tool that is mounted on the tip of a rotating spindle and that is capable of expanding and contracting a honing grindstone having a taper grindstone surface along the taper diameter surface, and a honing grindstone of this honing tool that reciprocates the rotary spindle while giving a predetermined cutting operation. And a whetstone driving means for expanding and contracting in conjunction with the operation.

[0011]

In the machining of the taper inner diameter surface of the workpiece by the honing machine of the present invention, the honing tool is given rotation and reciprocating motion via the rotary main shaft, and the honing tool of this honing tool is driven by the grindstone driving means. And the taper inner diameter surface is precision-finished.

[0012] At this time, the honing grindstone of the honing tool is also provided with an expansion / contraction operation linked to the reciprocating operation of the honing tool by the grinding wheel drive means. That is, when the honing tool moves forward in the direction in which the inner diameter of the taper inner diameter surface decreases, the honing stone contracts and closes, and conversely, when the honing tool moves in the direction in which the inner diameter of the taper inner diameter surface increases, The whetstone expands.

As a result, in spite of the above-mentioned reciprocating motion, the honing grindstone does not fit into the tapered inner diameter surface in a wedge shape, but is always given a certain amount of cut, and the tapered inner diameter surface is cut. Forcibly shaving only the amount corresponding to, enabling a honing process with a large amount of finishing.

[0014]

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

EXAMPLE 1 A honing machine according to the present invention is shown in FIG. 1. Specifically, this honing machine is a vertical one for machining a tapered inner diameter surface Wa of a work W as shown in FIG. A rotary spindle 2 including a honing tool 1, a spindle rotation drive unit (spindle rotation unit) 3, a spindle reciprocation drive unit (spindle reciprocation unit) 4, a grindstone drive unit (grindstone drive unit) 5, and a control unit (control unit) 6.
And so on. The work W has the taper inner diameter surface Wa with the axis of the work W being oriented in the vertical direction.
It is detachably supported in a floating state in the horizontal direction on the machining table 8. Hereinafter, each component will be described in detail.

A. As shown in FIG. 2, a honing tool 1: a honing tool (so-called honing mandrel or honing head) 1 is replaceably attached to the tip, that is, the lower end of a rotary spindle 2, and inside thereof,
A plurality of honing stones 1 that can be expanded and contracted in the radial direction
0, 10, ..., and cone rod 1 for expanding this
1 is provided. Reference numeral 12 denotes a cap nut for fixing the mounting portion 1a of the honing tool 1 to the lower end mounting portion 2a of the rotary spindle 2.

As shown in FIG. 7, each honing grindstone 10 has a taper grindstone surface 10a along the taper inner diameter surface Wa of the work W. The cone rod 11 is provided in the honing tool 1 so as to be movable in the vertical direction, and its tip portion 11a is a tapered expansion portion that presses the mounting base 10b of each honing grindstone 10, and at the upper portion thereof. A certain base rod 11b is connected to a whetstone extension rod 27 described later. Further, although not shown, the honing grindstones 10, 10, ... Are constantly elastically biased in the direction of contraction and closure by a return spring.

The honing grindstones 10, 10, ... Of the honing tool 1 are expanded by the downward movement of the cone rod 11, and are contracted by the return spring along with the upward movement of the cone rod 11. It will be operated.

B. Rotating main shaft 2: The rotating main shaft 2 imparts rotary motion and reciprocating motion to the honing tool 1, and the lower end mounting portion 2a is provided with the honing tool 1 and includes a drive shaft 15, a drive motor 16, and the like. The drive unit 3 and the main shaft reciprocating drive unit 4 including the slide body 17 and the hydraulic cylinder 18 are linked to each other.

C. Spindle reciprocating drive unit (spindle reciprocating means) 4:
That is, as shown in FIG. 2, the rotary main shaft 2 is rotatably supported by the slide body 17 by bearings 19, 19, ..., The slide body 17 is arranged in parallel with the machine body 7 in the vertical direction. It is provided so as to be able to move up and down on the pair of guide rods 20, 20 formed. Further, the lower end 17a of the slide body 17 is connected to the lower end of a piston rod 18a of a hydraulic cylinder 18 attached to the machine body 7.

When the piston rod 18a of the hydraulic cylinder 18 moves up and down, the rotary main shaft 2, that is, the honing tool 1 moves up and down via the slide body 17.

D. Spindle rotation drive unit (spindle rotation means) 3:
Further, the upper end connecting portion 2b of the rotating main shaft 2 is linked to a drive shaft 15 rotatably provided on the head portion 7a of the machine body 7. As shown in FIG. 1, the drive shaft 15 is axially supported on the same axis as the rotary main shaft 2, and the upper end connecting portion 2b of the rotary main shaft 2 is key-fitted in the shaft hole 15a at the lower end thereof. Or splined. Thus, the rotary main shaft 2 is connected to the drive shaft 15 so as to be relatively movable in the vertical direction (axial direction) and integrally rotatable.

A transmission pulley 21 is attached to the upper end of the drive shaft 15, and the transmission pulley 21 includes a transmission belt 22.
Is connected to the transmission pulley 23 attached to the motor shaft 16a of the drive motor 16.

By the rotational drive of the drive motor 16, the rotary main shaft 2, that is, the honing tool 1 is rotationally driven via the drive shaft 15.

E. Grinding stone driving unit (grinding stone driving means) 5: The grinding stone driving unit 5 is the honing stone 1 of the honing tool 1.
0, 10, ... Are expanded and contracted in conjunction with the hoisting tool 1 ascending and descending reciprocating motions. Specifically, a grindstone cutting portion (grindstone cutting means) for imparting a predetermined cutting amount to the honing grindstones 10, 10 ,. ) 25 and a honing stone 1
.., 10, and so on.

[0026]i) Grindstone cutting portion (grindstone cutting means) 2
5:As shown in FIG. 2, the grindstone cutting portion 25 is provided with
Cone rod (grinding stone expanding member) 11 of the grinding tool 1,
Equipped with grindstone extension rod 27 and cutting drive mechanism 28
It

The grindstone extension rod 27 is provided movably in the axial direction (vertical direction) within a shaft hole 29 provided in the lower half of the rotary spindle 2. The lower end portion 27a of the grindstone extension rod 27 is connected to the base rod 11b of the cone rod 11 and the upper end portion 27 thereof.
b is connected to the cutting drive mechanism 28.

The notch drive mechanism 28 moves the grindstone extension rod 27 in the vertical direction (axial direction), and includes a driven member 30 connected to the grindstone extension rod 27, a drive screw shaft member 31 for vertically moving the driven member 30, and a driven member 30. A servo motor 32 (FIG. 1) which is a drive source is provided.

The driven member 30 is provided so as to be slidable in the vertical direction relative to the rotary main shaft 2, and is integrally connected to the grindstone extension rod 27 arranged in the rotary main shaft 2. .

That is, the upper end portion 27 of the grindstone extension rod 27
A connecting pin 33 is horizontally attached to b,
Both ends of the connecting pin 33 are projected to the outside of the rotary main shaft 2 through axial elongated holes 34, 34 opened in the rotary main shaft 2. On the other hand, the driven member 30 is slidably and rotatably mounted on the rotary main shaft 2 by a bearing device 35, and both ends of the connecting pin 33 are fixed to the bearing device 35.

Since the driven member 30 is integrally fixed to the driven member 30, the driven screw shaft member 31 is connected via the screw member 36.
Is engaged so as to be able to advance and retract in the vertical direction. The drive screw shaft member 31 is rotatably supported by the slide body 17 so as to be rotatable in parallel with the rotary main shaft 2.

As shown in FIG. 2, the drive screw shaft member 31 has its upper portion axially supported by the upper bearing portion 37 of the slide body 17 via a screw mechanism 51 of the taper drive mechanism 26 described later. The lower portion is pivotally supported by the lower bearing portion 38 of the slide body 17, and the drive screw shaft member 31 is rotatably arranged in parallel with the rotary spindle 2.

The drive screw shaft member 31 is linked to a rotation transmission shaft 39 rotatably provided on the head portion 7a of the machine body 7. The rotation transmitting shaft 39 is axially supported on the same axis as the drive screw shaft member 31 and has a lower portion 39.
a is key-fitted or spline-fitted into the shaft hole 31a of the drive screw shaft member 31. As a result, the drive screw shaft member 31 is connected to the rotation transmission shaft 39 so as to be relatively movable in the vertical direction (axial direction) and integrally rotatable.

As shown in FIG. 1, the upper end portion of the rotation transmission shaft 39 is linked to a horizontal notch drive shaft 40 orthogonal to the rotation transmission shaft 39 via a gear mechanism 41. The front end of the cut drive shaft 40 is connected to the cut setting dial 42, and the base end thereof is connected to the motor shaft 32a of the servo motor 32 via a coupling 43.

However, when the drive screw shaft member 31 is rotated by the rotary drive of the servo motor 32 via the notch drive shaft 40 and the rotation transmission shaft 39, the drive screw shaft member 31 is screwed into the screw shaft member 31 so as to be able to advance and retract. The driven member 30 is moved downward or upward relative to the rotary main shaft 2. That is, when the driven member 30 is moved downward, the grindstone expanding rod 27 integral with the driven member 30 pushes the cone rod 11 downward, and the honing grindstones 10, 10, ... Are expanded. On the other hand, when the driven member 30 moves upward, the honing grindstone 10 is contracted and closed by the return spring (not shown) in the honing tool 1 as the grindstone expansion rod 27 moves upward.

The expansion / contraction amount of the honing grindstones 10, 10, ... Is the vertical displacement amount of the driven member 30, and further,
It is regulated by the amount of rotation of the drive screw shaft member 31 in the forward and reverse rotation directions.

A concrete stepping motor is used as the servo motor 32 for driving and controlling the amount of rotation of the drive screw shaft member 31, and its motor shaft 32a is
While one end thereof is connected to the cut drive shaft 40,
The other end is connected to a position detector 45 such as a rotary encoder via a coupling 44, and the rotation amount of the servo motor 32 is detected by this position detector 45. The cut setting dial 42 displays the rotation angle of the servo motor 32.

Ii) Grinding wheel expanding / contracting section (grinding wheel expanding / contracting means) 26: The grinding wheel expanding / contracting section 26 is a taper for reciprocating the drive screw shaft member 31 of the cutting drive mechanism 28 in the axial direction of the rotary spindle 2 with respect to the slide body 17. It is a form of a drive mechanism.

The taper drive mechanism 26 is configured to move the drive screw shaft member 31 in synchronization with the vertical reciprocating movement of the honing grindstones 10, 10, ..., Concretely, as shown in FIGS. Such screw mechanism 51 and cam mechanism 52
Be equipped with.

The screw mechanism 51 moves the drive screw shaft member 31 relative to the slide body 17 in the vertical direction, and specifically, as shown in FIGS. Screw member 55 and rack and pinion mechanism 56
It consists of

As shown in FIG. 5, the outer peripheral thread portion 55a of the bearing screw member 55 is screwed into the upper bearing portion 37 of the slide body 17 so as to be able to advance and retract in the vertical direction, and the shaft hole 55b thereof. The drive screw shaft member 31 is rotatably supported. A driven gear 57 is provided at the upper end of the bearing screw member 55 and is linked to the rack and pinion mechanism 56.

By driving the rack and pinion mechanism 56, the bearing screw member 55 is screwed back and forth relative to the slide body 17 in the vertical direction, and the bearing screw member 55 is moved.
The drive screw shaft member 31, which is rotatably supported, is also vertically moved relative to the rotary main shaft 2. In this regard, the pinion 56a of the rack and pinion mechanism 56
Is set to be larger than the tooth width of the driven gear 57 of the bearing screw member 55 to allow the bearing screw member 55 to move up and down.

Reference numeral 58 is a support portion for axially movably supporting the rack 56b of the rack and pinion mechanism 56, and 59 is for constantly urging the rack 56b toward the reference position (the solid line position in FIG. 3). Reference numeral 60 denotes a return roller for guiding the movement of the rack 56b of the rack and pinion mechanism 56.

The cam mechanism 52 drives the screw mechanism 51 in conjunction with the vertical reciprocating movement of the honing stones 10, 10, ..., Specifically, as shown in FIGS. The driven roller 61 attached to the pinion mechanism 56, and the drive cam 62 that cam-drives the driven roller 61.

The driven roller 61 is rotatably supported by the base end of the rack 56b of the rack and pinion mechanism 56 and is vertically moved in association with the vertical movement of the slide body 17. On the other hand, the drive cam 62 is fixedly attached to the machine body 7 and has a flat inclined cam surface 62a. The inclined cam surface 62a is positioned so as to face each other in the vertical movement path of the driven roller 61. ing.

When the slide body 17, that is, the honing grindstones 10, 10, ...
Is pushed by the inclined cam surface 62a, and the rack 56b advances (upward in FIG. 3, rightward in FIG. 4).
The bearing screw member 55 and thus the drive screw shaft member 31 integral with the bearing screw member 55 are moved upward (in the direction in which the cutting amount of the honing grindstones 10, 10, ... Reduces).

On the other hand, when the honing grindstone 10 is moving upward, on the contrary, the rack 56b moves backward by the action of the return spring 59 (downward in FIG. 3, leftward in FIG. 4).
The drive screw shaft member 31 is downward (the honing stones 10, 1
0, ... Depth of cut is increased).

The positional engagement relationship between the driven roller 61 and the inclined cam surface 62a in the cam mechanism 52 is shown in FIG.
At, it can be appropriately set by adjusting the inclination angle θ of the inclined cam surface 62a. That is, the drive cam 62
Is rotatably supported by the machine body 7 via a support shaft 63, and the tilt angle θ of the tilt cam surface 62a can be adjusted by rotationally adjusting the drive cam 62 with respect to the machine body 7. Has been done. Reference numeral 64 is an angle adjusting bolt, 65 is a display unit (indicated as 15 ° in the illustrated example) indicating the current inclination angle θ of the inclined cam surface 62a, and 66 is a lock lever for fixing the rotation of the drive cam 62. Shows.

The cam mechanism 52 and the honing stone 10,
The operation relations of 10, ... Are set as follows.

That is, as shown by the solid line in FIG. 7, the honing grindstones 10, 10, ...
machining uppermost position for a (tapered grindstone surfaces 10a, 10
When the lower ends of a, ... Are in position A), the driven roller 61
Contacts the inclined cam surface 62a at the point O (coordinates (Ax, Ay)) as shown in FIG. 6 (a).

On the other hand, as shown by the chain double-dashed line in FIG. 7, when the honing grindstones 10, 10, ... Are also at the lowermost processing position (the lower ends of the taper grindstone surfaces 10a, 10a, .. As shown in FIG. 6B, 61 abuts on the inclined cam surface 62a at a point P (coordinates (Bx, By)).

In other words, the inclination angle θ of the inclined cam surface 62a, that is, the driven roller 6 with respect to the inclined cam surface 62a.
1 ascending / descending stroke (equal to ascending / descending stroke of the honing stones 10, 10, ...) S and horizontal movement stroke L
And the taper of the inner diameter surface Wa of the workpiece W (D
It is set corresponding to the ₁ -D ₂₎ / S.

F. Control unit (control means) 6: The control unit 6
The operation of each drive unit of the honing machine is automatically controlled by interlocking with each other, and is specifically configured by a microcomputer including a CPU, a ROM, a RAM, an I / O port and the like.

The control unit 6 includes a drive motor 16 for the spindle rotation drive unit 3, a hydraulic control valve 70 for the hydraulic cylinder 18 for the spindle reciprocating drive unit 4, and a servomotor 3 for the grindstone drive unit 5.
2. In addition to the position detector 45, the position detector 72 that detects the position of the slide body 17 from the scale 71 provided on the slide body 17, and other drive units are electrically connected. Reference numeral 73 indicates a power source.

In addition, the control unit 6 includes each drive unit 3,
Various information necessary for driving the 4,5, for example, the rotation speed of the honing tool 1, the lifting speed and the operation timing,
Alternatively, the reference positions A and B of the honing grindstones 10, 10, ...
It is set as C (numerical control) data in advance or selectively.

Operation of Honing Machine : In the honing machine constructed as described above, the respective driving units 3, 4 and 5 are automatically controlled by the control unit 6 as described below. To be done.

First, the main spindle reciprocating drive unit 4 causes the main shaft reciprocating drive unit 4 to move the honing grindstones 10, 10, ... Of the honing tool 1 to the taper inner diameter surface Wa of the work W while the main spindle rotation drive unit 3 imparts rotational motion. It is lowered to the uppermost processing position A (solid line position in FIG. 7).

Subsequently, while the rotary motion and the reciprocating motion (elevating stroke S) are given to the honing tool 1 by the spindle rotation driving unit 3 and the spindle reciprocating driving unit 4, the grindstone cutting unit 25 of the grindstone driving unit 5 Honing grindstone 1
A constant cut (expansion) is given to 0, 10, ..., and the entire machining area of the tapered inner diameter surface Wa is honed.

At this time, the honing stones 10, 10, ...
Also, the whetstone expansion / contraction unit 26 of the whetstone driving unit 5 imparts an expansion / contraction operation interlocked with the up / down operation (reciprocating operation) of the honing tool 1.

That is, in FIG. 7, when the honing tool 1 moves downward with respect to the tapered inner diameter surface Wa (direction in which the inner diameter D becomes smaller), the honing stones 10, 10,
... is contracted and closed by a predetermined amount (D ₁ -D ₂ ), and conversely, when the honing tool 1 moves upward (in the direction in which the inner diameter D increases), the honing grindstones 10, 10, ... Only spread operation.

Thus, despite the reciprocating motion of the honing tool 1, the honing stones 10, 10, ...
Is always provided with a certain amount of cuts in the tapered inner diameter surface Wa without being wedge-shaped, and the tapered inner diameter surface Wa is forcibly cut by an amount corresponding to the depth of cut.
It enables precision finishing with a large amount of finishing (simultaneous combined machining of conventional grinding and honing).

When the honing processing with the set cutting depth is completed, the honing grindstones 10, 10, ... Are closed and closed by the grindstone cutting portion 25, and then the honing tool 1
Is raised again and returned to the initial position.

Embodiment 2 This embodiment is shown in FIG. 8 and is a modification of the configuration of the taper drive mechanism 26 in the first embodiment.

That is, the taper drive mechanism 26 includes a taper drive motor 80, which is a servo motor, as a drive source for driving the screw mechanism 51. This servo motor 80
Is arranged upward on the top of the slide body 17,
The drive gear 81 attached to the motor shaft 80a is driven by the driven gear 5 of the bearing screw member 55 via the pinion 56a.
It is linked to 7.

Further, the taper drive motor 80 is electrically connected to the control unit 6 (not shown), and is drive-controlled in conjunction with the vertical reciprocating movement of the honing grindstones 10, 10, .... Other configurations and operations are similar to those of the first embodiment.

The present invention is not limited to the above-described first and second embodiments, and various design changes are possible. For example, the constituent parts 3, 4, 5, 6 of the honing machine are the same. Other configurations may be used as long as they have a function.

As an example, in the taper drive mechanism 26 of the illustrated example, the bearing screw member 55 and the rack 56b (first embodiment), or the bearing screw member 55 and the taper drive motor 8 are used.
No. 0 drive gear 81 (Embodiment 2) is the pinion 5
Although the pinion 56a is omitted, the pinion 56a is omitted, or the pinion 56a is directly connected.
Alternatively, a gear mechanism (not shown) having a plurality of stages may be used, and the gear ratio may be selectively changed.

Further, in the illustrated example, the work W is supported on the machining table 8 in a floating state in the horizontal direction, but when the weight of the work W is large, the work W is fixedly supported. In addition, the honing tool 1 may be supported so as to be in a floating state relative thereto.

[0069]

As described in detail above, according to the present invention,
When honing the taper inner diameter surface, the honing stone of the honing tool is also given expansion and contraction operations linked to the reciprocating movement of the honing tool by the grinding stone driving means, so grinding and honing while actively cutting the taper inner diameter surface Processing can be performed simultaneously.

That is, when the honing tool moves forward in the direction in which the inner diameter of the tapered inner diameter surface decreases, the honing grindstone contracts and closes, and conversely, the honing tool moves in the direction in which the inner diameter of the tapered inner diameter surface increases. At this time, the honing grindstone expands. As a result, despite the reciprocating motion of the honing tool, the honing grindstone is always provided with a certain amount of incision with respect to the tapered inner diameter surface without fitting in a wedge shape. As a result, the taper inner diameter surface is forcibly cut by an amount corresponding to the depth of cut, and a honing process with a large finishing amount and a high finishing accuracy becomes possible.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic configuration of a taper honing machine according to a first embodiment of the present invention in a partial cross section.

FIG. 2 is a front sectional view showing an enlarged main part of the honing machine.

FIG. 3 is an enlarged side view showing a grindstone expanding / contracting portion of the honing machine.

FIG. 4 is an enlarged plan view showing a grindstone expanding / contracting portion of the honing machine.

FIG. 5 is a front cross-sectional view showing an enlarged main part of a grindstone expanding / contracting part of the honing machine.

FIG. 6 is a side view showing the operation of the cam mechanism in the grindstone expansion / contraction part of the honing machine, and FIG. 6 (a) shows a state in which the honing grindstone is at the uppermost machining position with respect to the tapered inner diameter surface.
(b) shows the state where the honing stone is at the lowest machining position with respect to the tapered inner diameter surface.

FIG. 7 is a cross-sectional view showing, in an enlarged manner, a working state of the taper inner diameter surface of the honing grindstone of the honing machine.

FIG. 8 is an enlarged front cross-sectional view showing a main part of a honing machine having a tapered inner diameter surface according to a second embodiment of the present invention.

[Explanation of symbols]

 W work Wa work taper inner diameter surface 1 Honing tool 2 Spindle spindle 3 Spindle rotation drive unit (Spindle rotation means) 4 Spindle reciprocating drive unit (Spindle reciprocating unit) 5 Grinding wheel driving unit (Grinding wheel driving unit) 6 Control unit (controlling unit) 7 Airframe 10 Honing grindstone 10a Tapered grindstone surface of honing grindstone 11 Cone rod (grinding stone expansion member) 15 Spindle drive shaft 16 Spindle drive motor 17 Slide body 18 Hydraulic cylinder 20 Guide rod 25 Grindstone cutting part (grindstone cutting means) 26 Taper Drive mechanism (grinding stone expanding / contracting means) 27 Grindstone expanding rod 28 Cutting drive mechanism 30 Follower member 31 Drive screw shaft member 32 Servo motor 39 Rotation transmission shaft 40 Cutting drive shaft 51 Screw mechanism 52 Cam mechanism 55 Bearing screw member 56 Rack and pinion mechanism 56a Pinion 56b Rack 57 Driven Car 61 cam mechanism driven roller 62 driven cam 62a drives the inclined cam surfaces 80 taper driving motor of the cam of the cam mechanism

Claims (7)

[Claims] 1. A rotary spindle that is reciprocally movable in the axial direction of a tapered diameter surface of a workpiece and is rotatably supported around the axis, and a spindle rotating means that rotationally drives the rotary spindle around the axis. A spindle reciprocating means for reciprocating the rotary spindle in the axial direction of the taper diameter surface; and a honing tool equipped at the tip of the rotary spindle for expanding and contracting a honing stone having a taper stone surface along the taper diameter surface. The honing tool of the honing tool is provided with a whetstone driving means for expanding and contracting in conjunction with the reciprocating movement of the rotary spindle while giving a predetermined cutting operation, and the whetstone driving means is provided for the honing grindstone. A grinding stone cutting means for giving a cutting amount, and a grinding stone expanding / contracting means for expanding / contracting in conjunction with the reciprocating movement of the honing grindstone. That taper honing machine. 2. The taper honing machine according to claim 1, further comprising control means for automatically controlling the operations of the spindle rotating means, the spindle reciprocating means and the grindstone driving means in association with each other. 3. The grindstone cutting means includes a grindstone extension rod movably provided in an axial hole of the rotary spindle, a cutting drive mechanism for moving the grindstone extension rod in the axial direction, and the honing. The taper honing machine according to claim 1, further comprising a grindstone expanding member that is provided in the tool and that expands the honing grindstone by moving the grindstone expanding rod in the axial direction. 4. The notch drive mechanism has a drive screw shaft member rotatably supported in parallel with and rotatable on a slide main body that rotatably supports the rotary main shaft, and the drive screw shaft member. 4. The taper honing machine according to claim 3, wherein a driven member that is integrally connected to the whetstone extension rod is engaged with the wobbled rod so that the driven member can be screwed back and forth. 5. The whetstone expansion / contraction means is a taper drive mechanism for reciprocating a drive screw shaft member of the cutting drive mechanism in the axial direction of the rotary main shaft with respect to the slide body. The taper honing machine according to claim 4, wherein the drive screw shaft member is moved in synchronization with the reciprocating movement of the honing grindstone. 6. The taper drive mechanism includes a screw mechanism that supports the drive screw shaft member with respect to the slide body so that the drive screw shaft member can be screwed back and forth in the axial direction of the rotary spindle, and the screw mechanism reciprocates the honing grindstone. The taper honing machine according to claim 5, further comprising a cam mechanism that is driven in conjunction with the cam mechanism. 7. The taper drive mechanism includes a screw mechanism that supports the drive screw shaft member with respect to the slide body so that the drive screw shaft member can be screwed back and forth in the axial direction of the rotary spindle, and the screw mechanism reciprocates the honing grindstone. The taper honing machine according to claim 5, further comprising a taper drive motor that is driven in synchronization with the taper honing machine.