JPS6157148B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an angle indexing device used in machine tools, etc., and more particularly to a single-function angle indexing device that allows a table rotatably supported on a frame or base to be rotated by a preset angle by operating a control lever or handle. This invention relates to an indexing angle regulating mechanism for setting a predetermined indexing angle in an indexing device and limiting rotational feed of the table to the set angle. An angle indexer must have all three functions: 1 Indexing (rotating the table at a predetermined angle) 2 Angular position regulation (angular positioning of the table) 3 Locking (fixing the table in the rotational axis direction) Among these, the first indexing function is the most basic and important function of the indexing device. This is an important function, and in order to perform this, an indexing angle regulating mechanism is required that sets a predetermined indexing angle and limits the rotational feed of the table in each indexing operation to this set angle. Indexing angle adjustment mechanisms of various structures have been put into practical use or proposed, but conventional ones generally have complicated structures, have a small degree of freedom in setting the angle, or are difficult to operate. It has many drawbacks, such as: Therefore, an object of the present invention is to provide an excellent single-function angle indexing device for adjusting the indexing angle, which eliminates the above-mentioned drawbacks, has a simple structure, has a large degree of freedom in angle setting, and is easy to operate. The goal is to provide a mechanism. Hereinafter, the present invention will be described in detail based on embodiments with reference to the accompanying drawings. The accompanying drawings relate to an embodiment of a single-function angle indexing device (hereinafter simply referred to as "indexing device") incorporating an indexing angle regulating mechanism according to the present invention, and FIG. 1 is a schematic external plan view thereof. , the structure of its main parts is clearly shown mainly in cross-sectional views from FIG. 2 onwards. The illustrated indexing device has a frame 1 and a table 3 rotatably mounted on the frame 1. The frame 1 has an outer circumferential wall 2 and a central cylindrical bearing portion 4 . The table 3 has a shaft portion 5 which is rotatably fitted into the frame bearing portion 4.
, to which an outer ring 7 and a master gear 15 having 24 teeth (pitch angle 15 degrees) are fixed by bolts 16 so as to rotate integrally.
Incidentally, the pitch of the master gear 15 of 15 degrees is just one example, and there are also pitches of 10 degrees, 20 degrees, etc. in addition to 15 degrees. In the following explanation, an example of a 15 degree pitch will be explained. The lower end of the table shaft portion 5 is threaded, and a clamp ring 9 is screwed onto the thread. An annular tapered bearing surface 10 is formed at the upper end of the clamp ring 9, and a locking steel ball 39 (to be described later) engages with pressure.The lower end of the clamp ring 9 is also threaded, and a set ring 13 is screwed on. In this way,
Regarding the frame 1, the movement of the table 3 in the rotational axis direction (axial direction or thrust direction) is regulated by the upper surface 11 of the frame outer peripheral wall 2 and the frame lower surface 41, and the movement of the table 3 is restricted by the inner peripheral surfaces 21 and 31 of the frame bearing part 4. Therefore, movement in the radial direction is restricted. A rotary plate 17 is fitted into the frame 1 so as to be rotatable around the cylindrical bearing portion 4 . A member 19 is protruded from the lower surface of the rotary plate 17, and an operating lever 23 is connected to the member 19.
is fixed. The operating lever 23 is attached to the frame 1
It extends outward from a fan-shaped opening 51 at the bottom of the holder, and is capable of reciprocating rotation between positions A and C shown in FIG. 1 or 4. In other words, the maximum operating stroke of the operating lever 23 is between the A position and the C position, and in the illustrated example, this angle is 80 degrees. A pin 27 is provided protruding from the upper surface of the rotary plate 17, and a ratchet 25 for rotating and feeding the table that can mesh with the teeth of the master gear 15 is attached to the pin 27. The ratchet 25 is constantly biased toward the master gear 15 (counterclockwise in FIG. 4) by a torsion spring 29. A ratchet removal plate 37 for controlling engagement and disengagement between the master gear 15 and the ratchet 25 is fitted into the frame bearing portion 4 below the master gear 15. The ratchet removal plate 37 is fixed in the rotational direction with respect to the frame 1 by inserting a pin into an axial groove 61 on the outer circumferential surface of the frame bearing 4, and its contour shape has a radius smaller than the tip circle of the master gear 15. is greatly ratcheted 2
5 from meshing with the teeth of the master gear 15, and a short diameter portion having a radius smaller than the tip circle of the master gear 15 and allowing the ratchet 25 to mesh with the teeth of the master gear 15. have In the case of the illustrated example, as is clear from FIG. 4, the ratchet 25 engages with the master gear 15 in the 20 degree range between the A position and the B position of the operating stroke between the A position and the C position of the operating lever 23. However, the ratchet 25 is configured to mesh with the master gear 15 only within a 60 degree range between the B position and the C position, thereby enabling the table to be rotated. Also attached to the pivot plate 17 is a clamping member 33 in the form of a circular disc, as shown in particular in FIG. The clamp member 33 is loosely fitted into the hole of the rotating plate 17 by an eccentric protrusion 35 provided on the lower surface, and a pin 63 protruding from the rotating plate 17 fits into the elongated hole 65 of the clamp member 33. The clamp member is inserted into the protrusion 35, and the swinging movement of the clamp member about the protrusion 35 is limited. The clamp member 33 has the function of engaging an indexing lever 45 and a locking steel ball 39, which will be described below, to act on both at the same time. The indexing lever 45 is for regulating the angular position of the table 3, and is swingably supported by a pin 43 implanted in the frame 1, as shown in FIGS. 2 and 4. The index lever 45 has a protrusion 53 at one end that engages with the teeth of the master gear 15 to position the table at an accurate index angle position.
Further, at the other end, a roll 49 is provided which is loosely fitted onto a pin 47 that projects downward. In addition, pin 4
As clearly shown in FIG. 4 or FIG. 12, a notch 44 is formed in a portion of the pin 43 to form edges 93 and 95 at the insertion portion into the index lever 45 of No. 3. The edges 93 and 95 each form an angle of less than about 60 degrees with respect to a line l connecting the center point of the pin 43 and the center of rotation of the master gear 15. This structure allows the reproducibility of indexing accuracy to be maintained by giving directionality to the positional shift of the indexing lever 45 when wear occurs on the pin 43 or the indexing lever 45. That is, according to such a configuration, if one or both of the pin and the hole are worn out, the indexing lever 45 will respond to the radial force acting on both ends (the protrusion 53 and the roller 49) as shown in FIG. Therefore, the pin 43 is pressed at two points, edges 93 and 95. Even if the wear progresses further, the center of the hole in the index lever 45 will remain at the edge 9.
The two-point contact function at 3 and 95 only moves on the line l. That is, the rotation center of the index lever 45 is always maintained on the line l, and therefore the protrusion 53
Since the positional deviation that occurs in the circumferential direction of the master gear 15 is substantially zero or extremely small, the function of reproducing the indexing accuracy before wear is maintained. If the center of rotation of the index lever 45 moves along the line l due to wear, the angle between the index lever 45 and the master gear 15 in the engaged state will change slightly compared to before the wear, but the master If an involute tooth profile is cut into the gear 15 and the indexing lever protrusion 53, the influence on indexing accuracy can be almost ignored. On the other hand, the locking steel ball 39 is shown in FIGS.
As clearly shown in the figure, it is arranged so as to face the roller 49 at the other end of the indexing lever 45 in the radial direction with respect to the table rotation axis, and the inner side is placed in a hole bored in the bearing part 4 of the frame 1. The tapered seat surface 10 of the clamp ring 9 and the inner circumferential surface of the rotary plate 17 restrict the outer side of the clamp ring 9 so that it does not fall out of the hole. As will be described later, when the clamp member 33 engages between the roll 49 of the indexing lever and the steel ball 39 as shown in FIG.
0 and the seat surface 40 of the frame bearing part 4 in the horizontal direction, thereby applying a downward component of force to the table 3 to press the lower surface of the outer ring 7 against the upper surface 11 of the frame outer peripheral wall 2, As a result, it functions to lock the table 3 relative to the frame 1 so that it cannot move in the direction of the axis of rotation. Next, the index angle regulation mechanism according to the present invention will be explained. This mechanism is generally composed of an index angle setting mechanism that sets a predetermined index angle in advance, and an index control mechanism that cooperates with the index angle setting mechanism to limit rotational feed of the table. First, the indexing angle setting mechanism is constructed as follows. That is, as shown in FIG. 2 and FIGS. 7 to 10, 24 holes 8, the same number as the number of teeth of the master gear 15, are formed on the outer peripheral surface of the table 3 (particularly the outer peripheral surface of the outer ring 7 in the illustrated example). Locate pins 55 are inserted into these holes 8, which are formed with an equal angular pitch of 15 degrees and have notches 57 as shown clearly in FIG. By forming an O-ring groove in the hole 8 and the locating pin 55 and fitting the O-ring 59 into the O-ring groove, the locating pin 55 can be removed from the hole 8 in the axial direction and rotated around the axis within the hole 8. It is designed to prevent this. However, the orientation of the notch 57 can be freely set by rotating the locating pin 55 around its axis using a suitable tool such as a screwdriver. Various indexing angles can be set by appropriately combining and setting the orientations of the notches 57. In the case of this embodiment, since the tooth pitch of the master gear is 15 degrees, the arrangement pitch of the locate pins 55 is also set to 15 degrees, and the index angles that can be set are multiples of 15 degrees, that is, 15 degrees, 30 degrees,
45 degrees, 60 degrees... However, as mentioned above, the maximum rotational feed angle of the table by one lever operation is 60 degrees from position B to position C.
The maximum practical indexing angle is 60 degrees. The set state of the locate pin 55 corresponding to the above-mentioned indexing angles is as shown in the following table. However, the downwardly set state in which the notch 57 faces the frame side is represented by the symbol [G], and the upwardly set state in which the notch 57 faces the opposite side from the frame is represented by the symbol [S].

[Table] The set state illustrated in FIGS. 8 to 10 is a case where the indexing angle is 30 degrees, and is a set state in which [S] and [G] are arranged alternately. In addition, the examples listed in the table above are all cases where the indexing angle is equal angle pitch, but two or more types of indexing angles of 15 degrees, 30 degrees, 45 degrees, and 60 degrees occur during one table rotation (360 degrees). Settings with mixed angles are also possible. On the other hand, the frame 1 is provided with an index control mechanism that cooperates with the locate pin 55. That is,
A hole 91 is formed in the inner protruding part 71 of the frame outer peripheral wall 2 (a separate part from the frame is fixed with bolts etc. for processing) at a position facing the notch 57 of the locate pin 55, and two holes A locking steel ball 67 is housed so as to be movable in the vertical direction. Note that instead of the steel ball 67, a pin-shaped locking member may be used. An arcuate shift plate 73 that cooperates with the lower end of the steel ball 67 is provided on the lower side of the frame overhang 71 so as to be slidable in the circumferential direction of the frame. In particular, as clearly shown in FIG. 5, the shift plate 73 has a notch 75 and contact surfaces 77, 79 formed on its inner peripheral edge, and a pin 87 protruding from the rotating plate 17 is inserted into the notch 75. There is.
This notch 75 is connected to the pin 87, that is, the operating lever 23.
Therefore, the shift plate 73 has a length corresponding to a rotation angle of 30 degrees.
By operating , it will be rotated with an angle delay of 30 degrees. That is, the operating lever 23
is in position A, the pin 87 of the rotating plate 17 is in contact with the contact surface 77 of the shift plate 73, and when the operating lever 23 is moved forward, the shift will not occur until the angle reaches 30 degrees. The plate 73 is not rotated, but when the angle exceeds 30 degrees, the pin 87 contacts the contact surface 79 on the opposite side of the shift plate 73, rotating the shift plate 73 in the counterclockwise direction in FIG. 5 (in the direction of the arrow X in FIG. 9). ). The same applies to the case of backward movement of the operation lever 23, in which the pin 87 that is in contact with the contact surface 79 first rotates 30 degrees and contacts the contact surface 77, and then the pin 87 contacts the contact surface 79 and then moves back to the shift plate 73.
is rotated clockwise in FIG. 5 and returns to the position shown. As shown in FIG. 8, the shift plate 73 has a thick plate part 83 and a thin plate part 85, and an inclined part 84 is formed between them. When the operating lever 23 is in the A position, the locking steel ball 67 rests on the thin plate portion 85 of the shift plate 73, and the upper end of the steel ball 67 is at the same level as the upper surface of the frame overhang 71 or higher. It is in a more retracted state, so the locate pin 55 of the table 3 can freely pass over the steel ball 67. When the operating lever 23 is rotated from position A, and the shift lever 73 starts rotating 30 degrees later as described above, the steel ball 67 moves toward the inclination of the shift lever 73 as shown in FIG. Part 8
4 and is pushed up onto the thick plate part 83. steel ball 6
This pushing up of the shift plate 73 is completed within 5 degrees after the shift plate 73 starts rotating, that is, the rotation angle from the A position of the operating lever 23 is 35 degrees.
It is designed to be completed within 30 minutes. The upper end of the pushed-up steel ball protrudes from the upper surface of the frame extension 71, and in this state, the locate pin 55 in the [G] state can freely pass through the steel ball 67 in the notch 57, but the locate pin 55 in the [S] state can pass freely through the steel ball 67. 55
collides with the steel ball and cannot pass through it,
Therefore, further rotational feeding of the table 3 is prevented. That is, the steel ball 67 and the shift plate 73 function to limit the rotational feed of the table 3 to the index angle set in advance by the locate pin 55 to realize a predetermined index. Now, the operation and function of the above-mentioned indexing device will be explained. The indexing operation is performed by moving the operating lever 23 from A to B to C at positions A and C as shown in Figure 4.
(In the case of the illustrated example, one operation is actually completed by reciprocating rotation from E to B to A. Therefore, for the sake of convenience, lever operations will be explained below by dividing them into these singular points A, B, and C (or E). [1] A position (locked position) (1) The ratchet 25 is engaged with the long diameter portion of the ratchet removal plate 37, and is out of mesh with the teeth of the master gear 15. (2) The clamp member 33 is engaged between the steel ball 39 and the roll 49 of the indexing lever 45. In addition, in the interruptingly engaged state, the operation lever 23 is moved so that the center point of the clamp member 33 stops at a position slightly to the right beyond the straight line connecting the center points of the steel ball 39 and the roll 49 in FIG. Adjust the stroke. As a result, the maximum diameter portion of the clamp member 33 engages somewhat to the right, and is prevented from returning to the left. This intermittent engagement of the clamp member 33 simultaneously realizes the following two functions. (a) The protrusion 53 of the indexing lever 45 meshes with the teeth of the master gear 15 to accurately regulate the angular position of the master gear 15, that is, the angular position of the table 3. (b) The steel ball 39 is attached to the seat surface 40 of the frame bearing part 4.
and the tapered seat surface 10 of the clamp ring 9 of the table shaft portion 5 are pushed into engagement in the horizontal direction. At this time, the tapered seat surface 1 is placed on the table 3.
A force with a downward component according to the angle 0 acts, and the lower surface of the outer ring 7 of the table 3 is pressed against the upper surface 11 of the frame outer peripheral wall 2. As a result, the table 3 is locked relative to the frame 1 so that it cannot move in the direction of the axis of rotation. (3) The pin 87 of the rotating plate 17 is connected to the shift plate 73.
It is in a state where it is in contact with the contact surface 77 of. At this time, the locking steel ball 67 in the hole 91 of the frame 1 is located on the thin plate portion 85 of the shift plate 73, so the upper end does not protrude from the hole 91. Furthermore, A
The position state is also the completion state of the previous indexing operation, and the locate pin 55a in the [S] set state, which was involved in the previous indexing, is located immediately in front of the steel ball 67 (on the left side in FIG. 8). There is. [2] A position → B position (lock release, indexing start) The rotation angle in this operation section is 20 degrees, which is always constant. (1) By rotating the rotating plate 17, the clamp member 3
3 is a locking steel ball 39 and an index lever roll 4
9 to the left in Figure 5,
The bias between the two is released. Therefore, both the engagement of the indexing lever protrusion 53 with the master gear 15 and the pressing lock of the table 3 against the frame 1 by the steel ball 39 are released. (2) By rotating the rotating plate 17, the ratchet 25
is removed from the long diameter part of the ratchet removal plate 37, moves to the short diameter part, and meshes with the master gear 15. (3) On the other hand, the pin 87 of the rotating plate 17 moves within the notch 75 of the shift plate 73;
5 is the pin 87, that is, the length dimension corresponding to the rotation angle of 30 degrees of the operation lever 23, whereas the rotation angle of the operation lever 23 in the section (A→B) is 20 degrees, so the shift plate 73
is not rotated. [3] B position→C(E) position (indexing) The operating lever 23 can be rotated from 15 degrees to 60 degrees from the B position to the C position according to a preset index angle. As mentioned above, in the illustrated example, the indexing angle is set to 30 degrees, and here, 30 degrees indexing will be described. In this case, the end position of the operating lever is not the C position but the E position, which is 30 degrees from the B position. (1) Since the ratchet 25 meshes with the master gear 15, the master gear 15 rotates by the same angle when the operating lever is operated.
Therefore, all the elements (table 3, locate pin 55, etc.) fixed to master gear 15 are also rotated. Note that at position B, the protrusion 53 of the index lever 45 is still in mesh with the teeth of the master gear 15, but the clamp member 3
3 has already been released, so when rotational torque is applied to the master gear 15, a force is applied to the index lever protrusion 53 by its tooth surface in the direction of disengaging the index lever protrusion 53, and the two are automatically disengaged. becomes, master gear 15
There is no obstacle to the rotation of the. (2) On the other hand, the pin 87 of the rotating plate 17 rotates within the notch 75 of the shift plate 73 following the previous rotation of 20 degrees from A to B, but it comes into contact with the contact surface 79 of the shift lever 23. There is still a margin of 10 degrees from position B until they come into contact, and during this time the shift plate 73 still remains stationary. That is, the operating lever 23 is moved from the B position.
During the 10 degree rotation, the steel ball 67 for locking the locate pin is still riding on the thin plate portion 85 of the shift plate 73 and its upper end does not protrude from the hole 91. Therefore, as described above, the locate pin 55a located immediately in front of the steel ball 67 at the start of the indexing operation is in the [S] set state, but since the steel ball 67 does not protrude, the locate pin 55a is in the [S] set state. This allows the table 3 to rotate. (3) The rotation angle of the operating lever 23 from position B is
When the angle exceeds 10 degrees, the pin 87 of the rotating plate 17 comes into contact with the contact surface 79 of the shift plate 73, and as the operating lever 23 rotates, the shift plate 7
3 rotates in the direction of arrow X as shown in FIG.
The steel ball 67 is pushed up and its upper end protrudes from the hole 91. The pushing up of the steel ball 67 is completed approximately 5 degrees after the shift plate 73 starts rotating, that is, approximately 15 degrees after the table 3 starts rotating at position B (when the operating lever 2
(35 degrees when viewed from the operating angle from position A in step 3),
Therefore, at the time when the push-up is completed, the steel ball 67 is positioned between the locate pins 55a and 55b as shown in FIG. (4) If the operating lever 23 continues to be rotated further, the locate pin 55b will face the steel ball 67;
Since the locate pin 55b is in the [G] set state, the steel ball 67 can pass through, and the table 3 is allowed to rotate. (5) The rotation angle of the operating lever 23 is 30 degrees from the B position.
When the position E is reached, the locate pin 55c in the [S] set state collides with the steel ball 67, and the operating lever 23 and table 3 cannot be rotated any further. At this point, a rotational feed (indexing) of 30 degrees of the table 3 is achieved. [4] C(E) position→B position (lock preparation) (1) By returning the operating lever 23 from the E position, the rotary plate 17 is reversed, and the ratchet 25 and clamp member 33 are also returned. In this case, since the tip claw of the ratchet 25 passes over the teeth of the master gear 15, the master gear 15 and therefore the table 3 are not reversed. Also, during this time, the rotating plate 17
The pin 87 is located in the notch 75 of the shift plate 73.
The shift plate 73 does not move. (2) When you return 30 degrees from position E and reach position B,
The pin 87 of the rotating plate 17 is connected to the shift plate 73.
The shift plate 73 comes into contact with the contact surface 77 of the
is now ready to start moving toward its original position. The position at which this state is achieved differs depending on the splitting angle: if the splitting angle is 60 degrees, it is in the E position, if it is 45 degrees, it is in the middle position between E and B, if it is 30 degrees, it is in the B position, and 15 degree is achieved at a position between B and A, respectively. [5] B position→A position (angular position regulation, lock) (1) The ratchet 25 engages with the long diameter portion of the ratchet removal plate 37, and is disengaged from the master gear 15. (2) The clamp member 33 is brought into engagement between the steel ball 39 and the index lever roll 49. As a result, on the one hand, the protrusion 5 of the indexing lever 45
3 meshes with the teeth of the master gear 15 to accurately regulate the angular position of the master gear 15 and, by extension, the table 3. On the other hand, the steel balls 39 press the table 3 against the upper surface 11 of the outer circumferential wall of the frame 1, thereby adjusting the rotation axis direction. Achieve lock. (3) On the other hand, the shift plate 73 is returned to the initial position by the pin 87 of the rotating plate 17, and the steel balls 6
7 again rides from the thick plate part 83 to the thin plate part 85 of the shift plate 73 and is held at the first position,
This will prepare you for the next angle determination. One indexing operation is completed by the operations and actions described above. Although the illustrated indexing device is not directly included in the above-mentioned indexing operation, it has important functions that are closely related to both the angular position regulation and locking functions among the three functions described above.
That is, the index lever protrusion 53 and master gear 15 in the locked state at the A position described above.
This is a function to adjust the meshing force with the teeth of the frame 1 and the mutual pressing force (locking force) between the frame 1 and the table 3. That is, as described above, these meshing forces and mutual pressing forces are obtained by the interlocking engagement of the clamp member 33 between the index lever roll 49 and the locking steel ball 39, but the related parts including these are As the clamp member 33 wears, the interlocking force (clamping force) of the clamp member 33 decreases, resulting in a decrease in the above-mentioned meshing force and mutual pressing force. Therefore, it is necessary to adjust the clamping forces from time to time to maintain these acting forces at predetermined values. Therefore, in the illustrated example, the clamping force of the clamping member can be adjusted by adjusting the distance between the indexing lever roll 49 and the locking steel ball 39. That is, when the clamp ring 9 is moved with respect to the shaft portion 5 by adjusting the settling ring 13, the radial position of the steel ball 39 changes due to the axial movement of the tapered seat surface 10, and the index lever roll 49 The interval between the two changes. In this way, both the above-mentioned meshing force and mutual pressing force can be adjusted very easily by one adjustment operation simultaneously and without changing the mutual balance. Now, the particularly important features and advantages of the indexing angle adjusting device according to the present invention can be summarized as follows. First of all, the structure is very simple. That is, the main parts are only the locating pin 55, the locking member (steel ball) 67, and the shift plate 73, and the manufacturing and assembly are simple, and the operation is very reliable and reliable. Second, the degree of freedom in setting the indexing angle is large, and the setting work is simple. That is, by setting the locate pin 55 in the [S] or [G] state, various indexing angles (15 in the illustrated example) can be set.
degree, 30 degree, 45 degree, 60 degree) can be set individually or in combination of two or more types. The third advantage is that the indexing operation is very simple. In other words, when starting the indexing operation, there is no need for a special operation to release the engagement between the locating pin and the locking member that were involved in the previous angle indexing, and the indexing operation can be performed simply by rotating the operating lever. can be completed. Furthermore, the indexing angle adjusting mechanism of the present invention is applicable not only to the indexing device configured as shown in the drawings but also to single-function angle indexing devices having various other configurations, and is extremely versatile. It can be said to be highly practical. Although the present invention has been described above based on preferred embodiments, the present invention is not limited thereto and can be modified in various ways.

[Brief explanation of the drawing]

The drawings relate to an embodiment of a single-function angle indexing device incorporating the indexing angle regulating mechanism according to the present invention, and FIG. 1 is a schematic external plan view, and FIG. 2 is a vertical cross-sectional view generally showing the configuration of the main parts. , FIG. 3 is an enlarged view of the surrounding area of the locking steel ball in FIG. Cross-sectional view, Figure 6 is similar to Figure 4 or 5.
7 is a developed sectional view taken along - in FIG. 6, and FIGS. 8 to 10 are sectional views taken along arrow - in FIG. 6, particularly at different operating positions. Figure 11 is a detailed diagram of the locate pin, Figure 12 is a diagram showing the state of the indexing angle regulating mechanism.
13 and 13 are diagrams showing the state of the index lever position regulation mechanism before and after wear, respectively. DESCRIPTION OF SYMBOLS 1... Frame, 2... Outer peripheral wall, 3... Table, 4... Cylindrical bearing part, 5... Shaft part, 8... Hole,
9...Clamp ring, 10...Tapered bearing surface, 1
1...Top surface of outer peripheral wall, 13...Settling, 1
5... Master gear, 17... Rotating plate, 23...
Operation lever, 25... Ratchet, 33... Clamp member, 37... Ratchet removal plate, 39...
Locking steel ball, 43...pin, 44...notch, 4
5... Index lever, 49... Roller, 53... Index lever protrusion, 55... Locate pin, 57...
...Notch, 59...O-ring, 67...Steel ball, 7
3... Shift plate, 77, 79... Contact surface,
83... Thick plate portion, 85... Thin plate portion, 87... Pin, 93, 95... Edge.

Claims (1)

[Scope of Claims] 1. A single-function angle indexing device in which a table rotatably supported on a frame can be rotated by a preset angle by operating a control lever, and a predetermined indexing angle is set and It is an indexing angle regulating mechanism for limiting the rotational feed of the table to the set angle, and (a) a rotary plate 17 is provided on the frame 1 so as to be rotatable back and forth, and the rotary plate is rotated in the forward direction. Ratchet mechanism 15, 25, 3 that transmits only motion to table 3
7, so that when the operating lever 23 fixed to the rotary plate is rotated in the forward direction from its initial position A, the table and the rotary plate engage the ratchet mechanism after a certain predetermined angle delay from the initial position. (b) A plurality of locating pins 55 are arranged on the table 3 in the direction of rotation of the table. A first locking member 67, which is configured to set a predetermined indexing angle and which cooperates with the locating pin to stop the rotational feeding of the table, is allowed to pass without engaging the locating pin. a thin plate part 8 which is provided on the frame 1 so as to be movable between a first position and a second position where it engages with the locating pin and prevents it from passing; and further capable of holding the locking member 67 in the first position.
5 and a thick plate part 83 that can be held in the second position, and is loosely engaged with the rotating plate, so that when the operating lever 23 is rotated, it is delayed by a certain predetermined angle from the rotation start position of the operating lever 23. A shift plate 73 is provided that can be rotated in the same direction, and when the operating lever is rotated in the forward direction from the initial position during angle indexing, the shift plate is rotated with a delay of a certain predetermined angle after the start of rotational feeding of the table. As a result, after the locating pin 55a involved in the previous angle indexing passes the locking member 67 held at the first position by the thin plate portion 85 of the shift plate, the locking member 67 moves to the shift plate. 73 is held at the second position by the thick plate portion 83 and engaged with the next locating pin 55c, a predetermined indexing angle is adjusted, and when the operation lever is returned to the initial position, the shift plate is also returned to the initial position. (c) a lock mechanism 33 interlocked with the rotation of the rotation plate 17; 39 and 45 are provided, and the operating lever 23
When the table is at the initial position A, the table is locked with respect to the frame by the locking mechanism, and when the operating lever is at a position rotated by a certain predetermined angle from the initial position, the lock is released. An indexing angle regulating mechanism of a single-function angle indexing device, characterized in that: 2. The locate pin 55 is inserted into the hole 8 provided at an equiangular pitch corresponding to the minimum indexing angle of the table 3.
A notch 57 is formed in each locate pin, and each locate pin is placed in the [G] state with the notch facing the locking member 67 or in the opposite direction. By selectively setting the hole 8 in the oriented [S] state, the indexing angle can be set to an arbitrary multiple of the pitch angle of the hole 8 using the locate pin in the [S] set state. An indexing angle regulating mechanism for a single-function angle indexing device according to claim 1. 3 The locking member 67 is held movably up and down in a hole 91 formed in the frame 1, and the first locking member 67 is housed in the hole 91 by riding on the upper surface of the thin plate portion 85 of the shift plate 73 at its bottom end. Claim 1 or 2, wherein the shift plate 73 is held in the second position and protruded from the hole 91 by riding on the upper surface of the thick plate portion 83 of the shift plate 73. An indexing angle regulation mechanism of the single-function angle indexing device described in 2. 4. An indexing angle regulating mechanism for a single-function angle indexing device according to any one of claims 1 to 3, wherein the locking member 67 is spherical. 5 The shift plate 73 is an arcuate plate extending in the rotation direction of the table, and is provided on the frame so as to be movable around the table rotation axis, and the shift plate 73 has a rotation angle of the operating lever on the inner peripheral edge. A pin 87 is provided on the rotary plate 17 which has a notch 75 with a width corresponding to the width of the notch 75 and is further rotated about the table rotation axis by the operating lever 23. , 79, so that by actuating the operating lever, the shift plate 73 starts to move after a certain angular delay after the start of rotational feeding of the table 3. An indexing angle regulating mechanism of a single-function angle indexing device according to any one of the first to fourth items.