JP2001341051A - Indexing device and method for determining angle of rotating body - Google Patents

Abstract

(57) [Problem] To provide an index device that can increase angle indexing accuracy while ensuring sufficient strength with a simple configuration and that can be easily added to a conventional machine tool. I do. SOLUTION: An index has a predetermined angle α (=
The engaged portions 21 are formed at intervals of 5 °), and the holding members 40
Are arranged at intervals of vernier angles (= 29 °), and when performing angle indexing, what is the remainder angle m of 0 ° to 4 ° when an arbitrary indexing angle is divided by a predetermined angle α. In this case, any one of the holding members 40 faces the engaged portion 21, and the holding member 40 is locked to the engaged portion 21 facing the engaging member 21. To be able to hold.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an index device for holding a rotating body at an arbitrary indexing angle by providing a rotating body with an index so as to be integrally rotatable and indexing the index in the circumferential direction. The present invention relates to a method for determining the angle of a rotating body.

[0002]

2. Description of the Related Art In a conventional indexing apparatus, after processing a work into a rotating body by a lathe or the like, it is sometimes desired to perform processing such as drilling at a specific portion in a circumferential direction.

For example, as shown in FIG. 7, in a spindle moving type lathe, an index 1 is provided coaxially and integrally with a spindle A1 for holding a work machined into a rotating body in a non-rotating state, and a motor M1 or the like. The index 1 is angularly indexed in the circumferential direction to bring the specific portion to the position of the processing tool, and to perform processing such as drilling in the radial direction.

The index 1 has teeth 2 formed at intervals of 5 ° in the circumferential direction. When the tooth 2 corresponding to the specific portion comes to the tool position by the angle indexing, the pawl-shaped stopper 3 is locked to the tooth 2 and holds this position. Then, although the processing is performed, the holding force against the processing force is maintained during the processing.

[0005] The index 1 is composed of a stopper 3 and a tooth 2.
Due to the relationship of the meshing strength with the tooth, the minimum size of the teeth 2 is about 5 ° in the circumferential direction. That is, the setting accuracy of the specific portion of the index 1 is about 5 °.

[0006] On the other hand, there is a high demand that angle determination be performed more finely, for example, in units of 1 °.

[0007]

However, in such a conventional technique, the angle index is determined, for example, in units of 1 ° using an index 1 having teeth 2 having a size of about 5 ° in the circumferential direction. Can't do it.

[0008] It is possible to perform the angle indexing to a finer angle by using a separate servo motor, a so-called C-axis motor, using the index 1 as described above, but it is necessary to obtain a holding force opposing the above-mentioned processing force. This is both difficult and costly.

The present invention has been made in view of the above circumstances, and has as its object to provide an index device which can improve the angle indexing accuracy while ensuring sufficient strength with a simple configuration and can be easily added to a conventional machine tool. The purpose is.

[0010]

The gist of the present invention to achieve the above object lies in the following inventions. [1] The rotating body (W) is provided with an index (10) so as to be integrally rotatable, and the index (10) is indexed in the circumferential direction to maintain the rotating body (W) at an arbitrary indexing angle. Index to do (10)
The apparatus has a holding member (40) for holding the rotating body (W), and the index (10) forms an engaged portion (21) at an interval of a predetermined angle α in a circumferential direction. The holding member (40) includes the engaged portion (21).
The rotating member (W) is held by locking the rotating member (W), and the holding member (40) corresponds to the type of the surplus angle m, which is the surplus when the indexing angle is divided by the predetermined angle α. The index (10) device, wherein a number of the index units are provided at positions corresponding to the engaged portions (21). [2] The rotating body (W) is provided with an index (10) so as to be integrally rotatable, and the index (10) is indexed in the circumferential direction, thereby holding the rotating body (W) at an arbitrary indexing angle. In the method of calculating the angle of the rotating body (W), the indexing angle is divided by a predetermined angle α to calculate a quotient n and a surplus angle m, and the engaged portion ( The index (10) in which 21) is formed is rotated from the reference position by the number obtained by multiplying the predetermined angle α by the quotient n (nα), and is rotated by the remainder angle m to obtain a number corresponding to the type of the remainder angle m The holding member (40) related to the calculated remaining angle m is made to correspond to the engaged portion (21) from the holding members (40) for the minute, and the holding member (40) related to the calculated remaining angle m is set. ) To the engaged portion (21). Sealed, the angle indexing method of the rotating body (W) which is adapted to hold the rotating body (W) to any index angle (nα + m). [3] The holding members (40) are arranged at intervals of the vernier angle, and the interval of the vernier angle is obtained by subtracting a minimum value excluding 0 ° which can be the remainder angle m from a predetermined multiple of the predetermined angle α. The index (10) device according to [1], or the method for determining the angle of a rotating body (W) according to [2], characterized by being represented by the following numerical values. [4] The rotating body (W) is a shaft-shaped work,
The work and the index (10) are provided so as to be integrally rotatable on a main shaft, and the index (10) is indexed in the circumferential direction to maintain the work at an arbitrary index angle. An index (10) device according to [1] or an angle indexing method for a rotating body (W) according to [2].

Next, the operation of the above invention will be described.

For example, an arbitrary indexing angle (nα + m) is set in units of 1 °, and the indexing angle is set to a predetermined angle α (=
5 °), the remainder angle m is 0 °, 1 °, 2 °,
Any angle up to 3 ° or 4 °.

The number of the holding members (40) corresponding to the type of the surplus angle m is provided at the position corresponding to the engaged portion (21), and when the arbitrary indexing angle is (nα), that is, When the remainder angle m is 0 °, one of the holding members (40) can be locked to the engaged portion (21), but any index angle (nα + m), and the remainder angle When m is 1 ° to 4 °, the one holding member (40)
Is shifted from the locked portion by 1 ° to 4 °, and locking becomes impossible.

However, when the surplus angle m is 1 ° to 4 °, another holding member (40) provided corresponding to the surplus angle m is engaged with the corresponding engaged portion (2).
What is necessary is just to lock in 1). By providing the holding member (40) corresponding to the surplus angle m, the rotating body (W)
Can be held at an arbitrary indexing angle (nα + m), and the angle of rotation of the rotating body (W) can be determined in units of 1 °.

In addition, the angle index of the rotating body (W) is set to 0.
To perform the measurement in units of 5 °, the remainder angle m is 0 °, 0.5
°, 1 °, 1.5 °, 2 °, 2.5 °, 3 °, 3.5
°, 4 °, and 4.5 °, the number of holding members (40) corresponding to the type of the surplus angle m, that is, ten holding members (40) are provided at positions corresponding to the engaged portions (21). What should I do?

Further, the holding members (40) are arranged at intervals of the vernier angle, and the interval of the vernier angle is a predetermined multiple of the predetermined angle α minus a minimum value excluding 0 ° which can be the remainder angle m. When the index angle (nα + m) of the rotating body (W) is divided by the predetermined angle α, the surplus angle m that can be calculated is, for example, γ is an integer from 1 to t in succession. , (Αγ / t).

Here, the minimum value excluding 0 ° that can be the remainder angle m is 1 ° when t = α, for example, and t = α.
If it is 2α, it is 0.5 °. Thereby, the angle can be determined in a predetermined unit (1 ° or 0.5 °).

If the minimum value of the remainder angle m is 1 °, the predetermined angle α is 5 °, and the predetermined multiple is 6, the vernier angle is 6
α-1 ° = 29 °, and the engaged portions (2
1) will be arranged.

By arranging the holding members (40) at the interval of the vernier angle as described above, any holding member (40) can be engaged with the engaged portion (2) for any remaining angle m.
The rotating member (W) can be held at an arbitrary index angle (nα + m) by engaging the holding member (40) with the engaged portion (21) facing the holding member (40). it can.

An index (10) is integrally and rotatably supported on a main shaft (A1) such as a lathe, and a rotating body (W).
Is a work held by a chuck on the spindle (A1) of such a lathe, the work can be held by the holding member (40) being locked by the engaged portion (21). As a result, it is possible to maintain a holding force sufficiently opposing the processing force when processing the work.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 to 6 show one embodiment of the present invention.

The index device 10 according to the present embodiment
“a” is for holding the rotating body, which is the work W, gripped by the chuck of the spindle A1 of the spindle moving type lathe at an arbitrary indexing angle.

As shown in FIGS. 1 to 3, the spindle A1 is driven at an arbitrary indexing angle by a servomotor M1.
The index 10 is formed in a disk shape, and
1 is supported coaxially and integrally rotatable. The engaged portions 21 of the index 10 are formed at intervals of a predetermined angle α (= 5 °) in the circumferential direction. The engaged portion 21 corresponds to a tooth bottom having a V-shaped cross section.

An arbitrary indexing angle is set to a predetermined angle α (= 5
°), the remainder angle m that can be a remainder when divided by 1 ° is 0 °, 1 °, 2 °,
3 ° and 4 °.

As shown in FIGS. 3 and 4, a reference point mark signal generator 11 is provided at the mechanical reference point BM on the circumference of the index 10, and the index 10 has a circumference from the mechanical reference point. The segment mark signal generators 12 are continuously provided at an interval of a predetermined angle α in the direction. Further, a mechanical reference point sensor SB is provided to face the circumference on which the reference point mark signal generator 11 is provided. Further, surplus angle sensors S0 to S4 are provided opposite to the circumference of the index 10 to which the section mark signal generator 12 is continuously provided.

The mechanical reference point sensor SB detects the reference point mark signal of the reference point mark signal generator 11. The remainder angle sensor S0 of 0 ° cannot detect when the remainder angle m is 0 °. The state is switched from the state to the detectable state, and the section mark signal of the section mark signal generator 12 is detected.

Similarly, the remainder angle sensor S of 1 °
The surplus angle sensor S2 of 1, 2 °, the surplus angle sensor S3 of 3 °, the surplus angle sensor S4 of 4 ° have surplus angles of 1 °, 2 °
At 3 °, 4 °, the detection is switched from the undetectable state to the detectable state, and the section mark signal of the section mark signal generator 12 is detected.

Surplus angle sensor S0 to surplus angle sensor S4
Is switched from the undetectable state to the detectable state, for example, when the input signal value of the surplus angle sensor and the input signal value for control are both “1”, the output signal value becomes “1”. An AND gate (m-value signal gate) is provided,
Among the surplus angle sensors S0 to S4, the input signal value for controlling the AND gate is set to "1" (the m-value signal gate is opened) for the one relating to the surplus angle m.

A holding member 40 is provided so as to face the outer periphery of the index 10. The holding member 40 is urged in a direction away from the engaged portion 21, and engages with the engaged portion 21 against a biasing force by a solenoid (not shown),
The work W is held at an arbitrary indexing angle.

An arbitrary indexing angle is set to a predetermined angle α (= 5
If the remainder angle m obtained by dividing by (°) is always 0 °, one holding member 40 is sufficient, but the remainder angle m is 0 °.
Since the angle is not limited to °, a holding member 40 corresponding to each surplus angle m is required. In FIG. 4, five holding members 40 corresponding to the respective remaining angles m are arranged in one place.

FIG. 5 shows the details of the arrangement of the holding members 40. An index 10 is provided at the scale position of the vernier caliper.
Indicate that the holding members 40 are arranged at the scale positions of the vernier scale. In general, a caliper uses (p-1) scales of the main scale as p.
Alternatively, one division of the vernier scale is obtained by dividing by p / 2.

In this embodiment, the scale m0 'of the main scale,
m1, 'm2', m3 ', and m4' correspond to a predetermined angle α (= 5 °) which is an interval at which the engaged portions 21 are formed. Also, in the general concept of the calipers described above, one scale of the vernier scale is obtained by dividing (5-4) pieces of the main scale by 5 and each scale m0 of the vernier scale. m1, m
The holding members 40 are arranged at respective positions of 2, m3, and m4. Therefore, the interval between the scales of the vernier scale is α
This corresponds to 4 ° from the equation (5-1) / 5.

FIGS. 5 (a) to 5 (c) show the relative position between the engaged portion 21 of the index 10 and the holding member 40 according to the type of the surplus angle m, based on the concept of the caliper described above. It is a diagram illustrating a changing state.

FIG. 5A shows a case where the surplus angle m is 0 °, and the scale m0 of the vernier scale and the scale m0 'of the main scale are coincident with each other and located at the scale mo of the vernier scale (0). The holding member 40 (corresponding to the remaining angle m of °) can be engaged with the engaged portion 21. In FIG. 5A, scales m1, m2, m3, and m4 of the vernier scale are scales m1 'and m of the main scale.
1 ° to the right in the figure with respect to 2 ′, m3 ′, and m4 ′,
They are shifted by 2 °, 3 °, and 4 °, respectively.

FIG. 5B shows the case where the surplus angle m is 1 °. When the vernier scale is shifted to the left by 1 ° in FIG. 5A, the scale m1 of the vernier scale and the scale m1 ′ of the main scale are obtained. And the holding member 40 located at the scale m1 of the vernier scale (corresponding to the surplus angle m of 1 °) can be engaged with the engaged portion 21. In FIG. 5B, the scale m0 of the vernier scale is shifted by 1 ° to the left in the figure with respect to the scale m0 ′ of the main scale. Also, the scales of the vernier scale m2, m3, m
4 is shifted by 1 °, 2 °, and 3 ° to the right with respect to the scales m2 ′, m3 ′, and m4 ′ of the main scale, respectively.

FIG. 5 (c) shows the case where the surplus angle m is 4 °. When the vernier scale is shifted to the left by 4 ° in FIG. 5 (a), the scale m4 of the vernier scale and the scale m4 ′ of the main scale are displayed. And the holding member 40 located at the scale m4 of the vernier scale (corresponding to the remainder angle m of 4 °) can be engaged with the engaged portion 21. In FIG. 5C, the scales m0, m1, m2, and m3 of the vernier scale are the scales m0 'and m of the main scale.
4 °, 3 °, 2 to the left of 1 ′, m2 ′, m3 ′
° and 1 ° are off.

According to FIGS. 4 and 5, each holding member 40 corresponding to the remainder angle m of 0 ° to 4 ° is arranged at an interval of a vernier angle of 4 °. However, since the interval of the vernier angle of 4 ° is narrow as the interval for arranging all the holding members 40, actually, the respective holding members 40 are arranged at the interval of the vernier angle shown in FIGS. Have been.

As shown in FIGS. 1 and 2, 0 ° to 4 °
The five holding members 40 corresponding to the remainder angle m are arranged at an interval of a vernier angle (= 29 °) along the circumferential direction of the index 10.

Here, the vernier angle (= 29 °) is a predetermined multiple of the predetermined angle α (= 5), where γ is t consecutive integers, t = 5, and the remainder angle m = αγ / t. Here, it is a numerical value obtained by subtracting the minimum value (5 × １ ／ = 1 °) excluding 0 ° that can be the remainder angle m from the segmentation angle θ (= 30 °) which is 6).

As can be seen from FIGS. 1 and 2, the holding members 40 are arranged at intervals of the vernier angle (= 29 °), and the surplus angle sensors S0 to S4 are also They are arranged at intervals of an angle (= 29 °).

That is, the holding member 40 corresponding to the remainder angle m of 0 ° and the remainder angle sensor S0 are both arranged at the same angular position. Similarly, both the holding member 40 corresponding to the remainder angle m of 1 ° and the remainder angle sensor S1
The holding member 40 and the surplus angle sensor S2 corresponding to the remaining angle m of 3 ° are both the holding member 40 and the surplus angle sensor S3 corresponding to the remaining angle m of 3 °, and the remaining angle m is 4 °.
Are both arranged at the same angular position.

The surplus angle sensors S0 to S4 need only be arranged at intervals of the vernier angle (= 29 °), and need not be arranged at the same angular position as each holding member 40. The arrangement interval of the surplus angle sensors S0 to S4 may not be the same as the vernier angle (= 29 °), which is the arrangement interval of the holding members 40, and may not be constant. That is, the surplus angle sensors S0 to S4 corresponding to the surplus angles m of 0 ° to 4 ° are 0 ° to 4 °.
What is necessary is just to be able to detect the division mark signal of the division mark signal generator 12 when the remainder angle m is 4 °.

The vernier angle, which is the arrangement interval of the holding members 40, has various numerical values by changing the values of γ, t, and the predetermined multiple. For example, 10 consecutive integers of γ (γ = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9)
And the predetermined multiple is 10, the section angle θ (10α =
Numerical value (49.5) obtained by subtracting the minimum value (5 × 1/10 = 0.5 °) excluding 0 ° that can be the remainder angle m from (50 °).
°).

As described above, the interval between the vernier angles becomes a fixed interval by setting the predetermined multiple to a fixed multiple (for example, 6 times), and the holding members 40 are arranged at the fixed interval. However, the present invention is not limited to this, and it is not necessary to arrange the holding members 40 at regular intervals.

For example, the predetermined multiple may not be a fixed multiple but may be a variable. That is, the holding members 40 are arranged in a number corresponding to the type of the surplus angle m, and the holding members 40 related to the surplus angle m calculated based on an arbitrary index angle from the holding members 40 are engaged. What is necessary is just to correspond to the part 21.

Next, the operation when the workpiece W is held at an arbitrary indexing angle will be described with reference to FIG.

As shown in FIG. 6, an arbitrary index angle 2
When 37 ° is set (step S601), it is set as an initial setting from the position of the machine reference point MB, that is, the angle 237 ° based on the absolute command (step S601).
601). This absolute value is taken into the arithmetic control program of the arithmetic unit (step S602).

When the program starts, the arithmetic control by the program changes the angle command value 237 ° to the predetermined angle α.
The division by (= 5 °) is performed by the calculation unit to obtain a quotient n (segment value n) and a residual angle m (m value). The quotient n (section value n) is an integer value from 0 to 71, and the remainder angle m (m value)
Is an integer value of 0 to 4.

When the angle command value is 237 °, the quotient n (segment value n) is 47 and the remainder angle m (m value) is 2 ° by the division formula (angle command value / α).

When the program issues an absolute value command (step S603: Y), a machine reference point mark signal is fetched (step S604). In the case of an absolute value command, the old quotient n already stored in the storage device is stored. (Section value n) and the old data (n ′, m ′) that is the old remainder angle m (m value) are deleted (n ′ = 0, m ′ = 0) (step S60).
5).

Next, new data (n, m), which is the result of the operation obtained by the operation unit, is output (steps S606 and S60).
7) Add the old data (n '= 0, m' = 0) and the new data (m, n) (n '= n' + n, m '= m')
+ M), and the result (n ′ = n, m ′ = m) is stored again in the storage device (step S608).

Next, the index 10 rotates counterclockwise, and the section mark signal obtained from the section mark signal generator 12 is fetched (step S609). On the other hand, the quotient n (segment value n) stored therein, that is, the quotient n of 47 (segment value n) is read out from the storage device, and the count value of the segment mark signal is used as the quotient n of 47. Counting is performed until the value matches (classification value n) (step S61).
0, S611).

The quotient n of the count value of the division mark signal is 47.
(Step S611: Y)
The remainder angle m (m value) stored in the storage device, that is, 2 ° is read from the storage device, and the remainder angle m
The (m value) opens the m signal gate, and the residual angle sensor S2 of 2 ° changes from the undetectable state to the detectable state (step S612).

Surplus angle sensor S0 to surplus angle sensor S4
Reads the section mark signal of the section mark signal generator 12 (step S613), and the 2 ° remainder angle sensor S2 reads the section mark signal, that is, when the section mark signal and the m-value signal gate match ( Step S
614: Y), an index angle determination signal is output (step S615).

When the index angle determination signal is output, 2
The solenoid (m value lock mechanism) of the holding member 40 related to the remaining angle m of ° is driven (step S616), and the index 10 is 235 ° (segment value n = 47) + 2 ° (m value =
It is locked to the engaged portion 21 at the position 2), and the holding member 40
, The index 10 is locked at the indexing angle of 237 °, and the workpiece W is held at an arbitrary indexing angle (step S617).

The angle determination based on the initial setting has been described above.

Next, a description will be given of a case where an index of 237 ° is calculated when the index 10 is locked at an arbitrary angular position.

That is, when the angle is determined by the increment value command (step S603: N), the index 1 is used.
An arbitrary angle position of 0 is a start point of angle indexing. The index 10 rotates counterclockwise.

When an increment value command is input (step S61)
8), the stop position of the index 10 is recognized (steps S619 and S620). That is, based on the old data (n ′ = 2, m ′ = 1) already stored in the storage device, the remainder angle m (m value) at an arbitrary angle position is 1 °, and the quotient n (segment value n) is 2 and any angular position is 1
It is recognized that the position is 1 ° (= 2α + 1 °).

Next, the arithmetic unit divides the angle command value 237 °, which is the index angle, by the segment angle α in the same manner as the absolute value command to obtain a quotient n (segment value n) of 47 and a remainder of 2 °. An angle m (m value) is obtained (step S606).

Next, new data (n, m) which is the result of the operation obtained by the operation unit is output (step S607), and the old data (n '= 2, m' = 1) and the new data (n = m) are output. 47, m
= 2) and (n ′ = n ′ + n, m ′ = m ′ +
m), and stores the result (n ′ = 49, m ′ = 3) in the storage device again (step S608).

Next, the index 10 rotates counterclockwise, whereby a section mark signal is fetched (step S609). On the other hand, the quotient n (segment value n) stored therein, that is, the quotient n (segment value n) of 49, is read out from the storage device, and the count value of the segment mark signal is read out of the 49 quotients n. The counting is performed until the value matches the (segment value n) (steps S610 and S611).

The quotient n of the count value of the division mark signal is 49.
(Step S611: Y)
The remainder angle m (m value) stored in the storage device, that is, 3 ° is read from the storage device, and the remainder angle m
The (m value) opens the m signal gate, and the residual angle sensor S3 of 3 ° changes from the undetectable state to the detectable state (m
Three signal gates are opened) (step S612).

Surplus angle sensor S0 to surplus angle sensor S4
Reads the section mark signal of the section mark signal generator 12 (step S613), and the remainder angle sensor S3 of 3 ° reads the section mark signal, that is, the section mark signal and the m-value signal gate match ( Step S
614: Y), an index angle determination signal is output (step S615).

When the index angle determination signal is output, 3
The solenoid (m value lock mechanism) of the holding member 40 related to the remaining angle m of ° is driven (step S616), and the index 10 is 245 ° (segment value n = 49) + 3 ° (m value =
3) is locked to the engaged portion 21 at the position 3), and the holding member 40
, The index 10 is locked at the indexing angle of 248 °, and the work W is held at an arbitrary indexing angle (step S617).

In the above embodiment, the holding member 40
Are arranged at intervals of vernier angle 29 ° (= 6 × 5 ° -1 °), but are not limited to this. That is, a predetermined number (for example, five) of the holding members 40 may be arranged corresponding to the surplus angle m within a range of 360 ° in the circumferential direction of the index 10. Generally, the vernier angle is represented by the formula (nα-1), and is 34 ° (= 7 × 5 ° -1 °), 39 ° (= 8 × 5 °).
-1 °) and 59 ° (= 12 × 5 ° -1 °). As described above, the vernier angle is 29 ° or 59 °.
As in the above, the angle need not be constant.

Further, by increasing the number of the holding members 40, it is possible to cope with many surplus angles m. For example, by increasing the number of the holding members 40 by two,
Angle indexing can be performed in units of 0.5 °, which is finer than units of 1 °.

Further, the predetermined angle α, which is the interval at which the engaged portions 21 are formed, is set to 5 °, which is the maximum in terms of the meshing strength. However, if the predetermined angle α is 5 ° or more, 6
°, 7 °,..., 10 °, 20 ° and the like. When the predetermined angle α is increased, the holding member 40
May be increased.

Further, in the above-described embodiment, the shaft-shaped work W integrally supported on the main shaft A1 of the lathe has been described as the rotating body, but the present invention is not limited to this. For example, the index 10 is attached to the rotation axis of the table, and the index 1
The angle of the table and the work supported by the table may be indexed by indexing 0.

As described above, the present index device 10a
If the index 1O can be attached to the rotating body so that it can rotate integrally, the angle of rotation of the rotating body and the one that rotates integrally with the rotating body can be easily determined. Can be equipped.

[0072]

According to the index device of the present invention, the number of holding members corresponding to the type of the surplus angle m, which is the surplus when an arbitrary indexing angle is divided by the predetermined angle α, is applied to the engaged portion. No matter what the obtained residual angle m is, the holding member is opposed to the engaged portion, and the holding member is engaged with the engaged portion. Since the rotating body is stopped and the rotating body is held, it is possible to increase the angle indexing accuracy while ensuring sufficient strength with a simple configuration, and furthermore, it can be easily added to a conventional machine tool.

[Brief description of the drawings]

FIG. 1 is a front view showing a positional relationship between an index and a holding member according to an embodiment of the present invention.

FIG. 2 is a front view of the index device according to the embodiment of the present invention.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is a layout diagram of various sensors with respect to an index according to an embodiment of the present invention.

FIG. 5 is a diagram showing the arrangement of the engaged portion and the holding member according to an embodiment of the present invention, in relation to the scale of the main scale of the caliper and the scale of the sub-scale.

FIG. 6 is a flowchart when a work is held at an arbitrary indexing angle using the index device according to one embodiment of the present invention.

FIG. 7 is a front view showing a state in which a conventional index device is attached to a movable spindle lathe.

[Explanation of symbols]

 A1: Spindle BM: Mechanical reference point M1: Servo motor S0 to S4: Surplus angle sensor SB: Mechanical reference point sensor W: Workpiece (rotating body) 10: Index 10a: Index device 11: Reference point mark signal generator 12: Classification Mark signal generator 21: engaged portion 40: holding member

Claims (4)

[Claims] An index device for holding an index of an index in a circumferential direction by providing an index to a rotary body so as to be integrally rotatable and indexing the index in a circumferential direction. The index is formed by forming an engaged portion at an interval of a predetermined angle α in a circumferential direction, and the holding member is locked by the engaged portion. The rotating member is held, and the holding member is located at a position corresponding to the engaged portion by a number corresponding to a type of a surplus angle m which is a surplus when the indexing angle is divided by a predetermined angle α. An index device characterized by being provided respectively. 2. An angle indexing method for a rotating body for holding said rotating body at an arbitrary indexing angle by providing an index to said rotating body so as to be integrally rotatable and indexing said index in a circumferential direction. The index angle is divided by a predetermined angle α to calculate a quotient n and a surplus angle m, and divide the index in which the engaged portions are formed at a predetermined angle α in the circumferential direction from the reference position to a predetermined angle α. n is multiplied by n (nα), and the remaining angle m is rotated, and the holding member corresponding to the calculated remaining angle m is selected from the holding members corresponding to the type of the remaining angle m. A rotation that is adapted to correspond to the engaged portion and that the holding member relating to the calculated remainder angle m is locked to the engaged portion so as to hold the rotating body at an arbitrary indexing angle (nα + m). Body angle How to Eject and. 3. The holding member is disposed at an interval of a vernier angle, and the interval of the vernier angle is obtained by subtracting a minimum value excluding 0 ° that can be a surplus angle m from a predetermined multiple of a predetermined angle α. 2. The method according to claim 1, wherein the numerical value is represented by a numerical value.
An index device according to any one of claims 1 to 3, or an indexing method for a rotating body according to claim 2. 4. The rotating body is a shaft-shaped work, and the work and the index are provided so as to be integrally rotatable on a main shaft, and the index is indexed in a circumferential direction, whereby the work is formed. The index device according to claim 1, wherein the index is held at an arbitrary indexing angle, or the angle indexing method for a rotating body according to claim 2, wherein the indexing device holds the indexing angle.