JPH0651267B2 - Cam grinder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cam grinder for copying and grinding a cam portion of a cam shaft of a multi-cylinder internal combustion engine by a master cam, and more particularly to a variety of cam grinders.
The present invention relates to a cam grinder that grinds small-rod cam shafts.

FIG. 1 is a front view of a cradle portion that supports a work in a cam grinder. On a rocking table 43 supported by a rocking shaft 42 supported at both ends of a grinder table 41, a headstock part A is arranged on the left side and a work mounting part B is arranged on the right side. A work drive tool 1 including a drive metal 31 that can be adjusted in a rotational direction and fixed is provided at an end of a main spindle 10 rotatably supported by a rocking base 43, and a work W is inserted into the drive tool 1 to be attached to the main spindle 10. Both ends are supported by a center 46 which is fitted into the center 44 and an end of a tailstock 45 which is equipped with a swing base 43 so that the position thereof can be adjusted and fixed in the axial direction of the spindle 43. Engage with the keyway.

A group of master cams 11 is fixed to the main shaft 10. In the master cam 11 group, in the currently used cam grinder, a master cam, which is the sum of the numbers of cams provided in several kinds of works W, is parallel to the spindle 10.

The main shaft 10 is a step pulley 49 rotatably supported coaxially with the swing shaft 42 via a timing belt 48 from a timing pulley 47 fixed to the shaft end of a pulse motor 40.
The rotation is transmitted to a and the step pulley 4 integrated with the step pulley 49a
Spindle drive pulley 3 fixed to the end of the spindle 10 from 9b
The rotation is transmitted to the gear 4 by the timing belt 50, and the main shaft 10 rotates.

It is arranged on a rotatable follower roller 52 on the same side as the cylindrical grinding wheel 51 provided on the wheel stand of the grinding machine.

In FIG. 1, the grinding wheel 51 and the follower roller 52 are located above the rocking table 43, but these are for the purpose of illustration and the grinding wheel 51 and the follower roller 52 are located on the rocking table 43 side. On the other hand, the rocking base 43 is constantly urged so that one of the master cams 11 is pressed against the follower roller 52 during grinding.

When the pulse motor 40 is energized, the pulley 47 is rotated,
Rotate the step pulleys 49a and 49b via the belt 48,
The step pulley 49b rotates the main shaft drive pulley 34 via the belt 50 to rotate the main shaft 10. Then, the follower roller 52 rolls on the master cam 11 which is in contact with the follower roller 52, and the rocking base 43 rocks about the rocking shaft 42, and the rotating grinding wheel 51 causes a predetermined cam profile on the work W. Form an aisle.

In a conventional work supporting device for a cam grinding machine of this type, the master cam is axially juxtaposed to support the work coaxially with the main shaft and rotate the master cam. Then, the same number of master cams as the cam shafts to be processed are required. However, recently, there has been an increasing demand for processing various types of cam shafts on the same machine, and the types of master cams incorporated in the spindle of the work supporting device are also increasing. However, in order to process multiple types of camshafts with the same machine, it is impossible to increase the number of types of master cams that are built into the spindle of the work support device unless the number of master cams required to process one type of camshaft is reduced. Is.

Therefore, Japanese Unexamined Patent Publication (Kokai) No. 57-127663 discloses a cam grinder capable of processing various types of cam shafts with a minimum number of master cams without replacing the master cams.

However, in the cam grinder shown in the above publication,
The piston rod of the rotation-stopping cylinder fixed to the cradle is provided so as to advance and retreat with respect to the outer periphery of the drive face plate to which the drive metal for driving the cam of the workpiece is attached, and the piston rod is fitted into the reference recess on the outer periphery of the drive face plate. After fixing the drive face plate, the main shaft is indexed and rotated. For this reason, a fixed-position stop device for the main shaft is required, and indexing is impossible unless the main shaft and the drive face plate in a completely connected state are stopped at fixed positions.
Therefore, it takes time to index. There is a drawback that.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cam grinder capable of processing various kinds of cam shafts using a minimum number of master cams without replacing the master cam, and to provide a cam grinder capable of shortening the indexing time. .

According to the present invention, each set of cams arranged in parallel in the axial direction has the same and the same angular position, and each set of the cams includes a plurality of cam shafts including a plurality of cams arranged at different phases to grind various types of cam shafts. This is a possible cam grinder, in which a table mounted so as to be movable in the axial direction of the cam shaft is supported so that it can swing about a shaft parallel to the table moving direction on the table. Is arranged rotatably on the rocking table, supports one of the workpieces, is provided with a main shaft having a master cam, and is provided with a follower roller which is in contact with one of the master cam groups and is axially shiftable, One member of the indexing fixture is fixed to the end of the main shaft, the other member of the indexing fixture is slidably and rotatably slid on the main shaft in the axial direction, and the other member of the indexing fixture is Engage with the end of the main shaft so that it can rotate and does not move in the axial direction. It is engaged with the work driving tool so as to be movable in the axial direction, and the braking device of the work driving tool, the axial driving device of the other member that slides into the main shaft of the indexing fixture, and the angle of the rotation direction of the work driving tool and the main shaft. In a cam grinder provided with a detecting means and a device for controlling the number of indexes of the indexing fixture by the detecting means, the axial drive device of the other member sliding into the main shaft of the indexing fixture is indexed and fixed. A cylinder end member fixed to the main shaft is slid into the inner circumference of the other end of the indexing member by sliding the inner circumference of the cylinder of the work driving tool into the outer circumference on the one end side of the other member slid into the main shaft of the tool. Sliding into a fluid pressure cylinder, a fluid passage to the fluid pressure cylinder is provided at the center of the spindle, and the fluid passage is connected to a fluid pressure source via a fluid rotary joint attached to the rear end of the spindle. At the same time, the means for detecting the positions of the work drive and the spindle in the rotational direction are connected to the spindle. An encoder for a cam grinding machine, characterized in that the encoder interlocked with the workpiece drive device.

The indexing action of the master cam of the present invention having the above configuration is as follows. The indexing fixtures are engaged with each other except during the indexing operation. The spindle is rotating without stopping. First, the device for controlling the number of indexes of the indexing fixture drives the axial driving device of the other member that slides into the main shaft of the indexing fixture to retract the other member, and The other member is disengaged, but the other member slipped into the main shaft of the indexing fixture and the work drive member engaged with the main shaft end portion so as to be rotatable and not to move in the axial direction are maintained. .
Here, the device for controlling the number of indexes of the index fixing device detects that the index fixing device is disengaged, the braking device of the work driving device is activated, and the spindle of the work driving device and the index fixing device is activated. The other member that slides in stops rotating. Since the main shaft is rotating, one member fixed to the main shaft of the indexing fixture and the master cam rotate together with the main shaft, and the angle in the direction of rotation with the work driving tool changes. This angle change is sent to the device for controlling the index number of the index fixing device by transmitting a signal detected by the angle detecting means of the rotation direction of the work driving tool and the main shaft, and the controlling device controls the predetermined angle (the position of the cam on the work). Phase difference)
Judging that the main shaft has rotated, the drive device for the other member slipped into the main shaft of the indexing fixture is advanced to engage the other member with the one member fixed to the main shaft of the indexing fixture. .
At the same time, the braking device is released, the indexing is completed, and the same cam having different mounting angles with respect to the cam shaft can correspond to the same master cam. In this way, the relative position of the master cam and the workpiece driving tool in the rotational direction is performed during the rotation of the spindle.

Embodiments of the present invention will be described below with reference to the drawings. In the following description, the axial direction is the axial direction of the main shaft 10, although it may not be particularly specified. FIG. 2 is a vertical cross-sectional view including the spindle of the spindle stock portion A of the cam grinder.

The overall configuration of the present invention is similar to that of FIG. The main shaft 10 is fitted into bearings 24 and 25 provided on bearing bases 22 and 23 fixed to the rocking base 43, respectively, and is supported so as not to move in the axial direction. An index plate 4 is fixed to the shaft end of the main shaft 10 as one member of the circumferential index fixing tool of the master cam 11. The index plate 4 has a notch groove 4a as shown in FIG. 4 of the front view. The notch groove 4a is divided by equally dividing the circumference into the number of engine cylinders, and in this embodiment, it is partially common so as to be shared by a four-cylinder engine and a six-cylinder engine, and has eight grooves as shown in the drawing. . The master cam 11 is fixed to the main shaft 10 via a key so as not to move in the axial direction. An index dog 5 having a single blade that fits into one of the notch grooves 4a is slid into the main shaft 10 as the other member of the circumferential indexing fixture of the master cam 11 that meshes with the index plate 4. . Index plate 4 and index dog 5
For example, in the case of a four-cylinder engine, the circumference can be divided into 40 parts, and in the case of a 6-cylinder engine, the circumference can be divided into 60 parts. Therefore, both of them may have 12 teeth.

A drive dog 6 is fixed to an axial groove on the outer circumference of the index dog 5, and the drive dog 6 projects parallel to the spindle 10 toward the end of the spindle. The drive dog 6 is rotatably attached to the index plate 4 without moving in the axial direction. The drive dog 6 is axially movable in the axial groove of the workpiece driving tool 2 of the workpiece driving tools 1 and 2 which are fixed to each other without a gap in the rotational direction. Have slipped into. The index dog 5 also has the function of a piston, and the reduced diameter portion 5a of the outer diameter on one end side of the index dog 5 slides tightly into the cylindrical inner circumference 2a of the work drive tool 2. There is. An annular cylinder end member 27 fitted and fixed to the main shaft 10 is tightly slid into a cylindrical portion 5b at the center of a portion having a large outer diameter on the other end side of the index dog 5.
Therefore, the cylinder chambers 2 are provided on both sides of the index dog 5.
8 and 29 are formed.

A drive metal 31 is fixed to the work driving tool 1 and is fitted into a key groove of the work W to drive the work W.

A gear 3 is fixed to the work driving tool 2, and the gear 3 has the same number of teeth as the gear 3 fixed to a first encoder shaft 32 that is connected to the shaft of the first encoder 19 and is rotatably supported. The gear 15 is meshed with the gear 15. The gear 15 is meshed with the gear 18 fixed to the other end of the braking shaft 33, one end of which is rotatably supported by the member to be braked of the electromagnetic brake 14.

Spindle drive pulley 3 fixed to the rear end of the spindle 10.
The gear 17 having the same number of teeth as the gear 3 fixed to the gear 4 through the joint 35 has the same teeth as the gear 17 fixed to the second encoder shaft 36 that is connected to the second encoder 20 and is supported by a bearing (not shown). A number of gears 16 are meshed.

As described above, the gears 3, 15, 16 and 17 have the same number of teeth.

The fluid pressure rotary joint 13 is fixed to the joint 35, the A and B ports of the fixed side member thereof communicate with the A and B ports of the pneumatic solenoid valve 53, and the rotating portion thereof is inserted through the through hole of the main shaft 10. Is fixed to one end of the pipe 37. Pipe 37
The other end of the main shaft 10 is closed on the inner diameter side, and the main shaft 10 is expanded through the two sealing rings 38 which are expanded in diameter and fitted on the outer periphery thereof.
It is tightly fitted in the through hole. Fluid pressure rotary joint 13 A
Air passage 1 between the pipe 37 communicating with the port and the spindle 10.
2A extends to the cylinder chamber 29 following the passage provided in the main shaft 10 and the cylinder end member 27, and the air passage 12B in the pipe 37 communicating with the B port of the fluid pressure rotary joint 13 is connected to the pipe 37. The pipe 37 is radially penetrated between the fitted sealing rings 38 to reach the cylinder chamber 28 through a passage provided in the main shaft 10.

In the present invention, two master cams 11 are prepared for intake and exhaust of the engine, namely, an intake cam creation master cam IN and an exhaust cam creation master cam EX. And these phase differences are constant regardless of the number of cylinders. Therefore, for example, in the case of a 6-cylinder engine, a total of 12 master cams for intake and exhaust, which are originally necessary, are required, but in the present invention, it is two.

Position detecting switches LS-1 and LS-2 such as proximity switches as detecting means in control are operated by the sensitive member 39 at the stop position of the disc-shaped sensitive member 39 of the conductor fixed to the end of the indexing dog 5. It is located in.

The notch grooves 4a of the index plate 4 are provided with parenthesized symbols (1) to (8), respectively. These symbols (1) to (8) are the order of operation of the cams and also the order of explosion of the cylinders. For example, in a two-cylinder engine having a crank with a phase angle of 180 degrees, (1) → (5) → (1 ), In a four-cylinder engine having a crank with a phase angle of 90 degrees, (1) → (5) → (3) → (7) →
(1), for a 6-cylinder engine with a crank with a phase angle of 60 degrees, the index dogs are ordered in the order of (1) → (4) → (6) → (2) → (8) → (5) → (1). 5 are engaged and indexed.

When the cam is ground as shown in FIG. 3, the index dog 5 is located at the right end and the index dog 5 is fitted in the notch groove 4a- (1) of the index plate 4, and The switch 39 operates the switch LS-1. The air supplied from the air source 54 to the illustrated port of the solenoid SOL-1 of the pneumatic solenoid valve 53 after being adjusted through the air supply unit 55 including the air filter, the pressure regulator and the relubricator is from the A port to the fluid pressure rotary joint 13.
The air entering the air passage 12A through the cylinder chamber 29
Enter and press index dog 5 to the right.

First, the work W is clamped between the sensors 44 and 46, and the work drive gold 31 is engaged with the work W. As shown in FIG. 1, the phase of the intake cam 1IN matches the phase of the master cam IN. Next, the master cam IN is brought into contact with the follower roller 52. When the pulse motor 40 is energized, the pulley 47 rotates, and the belt 48 and the step pulleys 49a, 49a
b, the main shaft drive pulley 34 is rotated via the belt 50, the main shaft 10 rotates, the rotational force is transmitted from the index plate 4 to the index dog 5, and the index dog 5 is provided with the drive dog 6 to drive the work drive tool. Two
The work drive tool 1 rotates to drive and rotate the work W.

The master cam 11 rotates integrally with the main shaft 10. At this time, the rotation of the work W is changed by the pulse motor 40 controlled by the speed control device 63 shown in FIG. 7 even during one rotation so as to perform optimum grinding. The work 1 is rotated by the drive tool 1 being rotated along with the drive gold 31, and the intake wheel 1 is moved by the grinding wheel 51 to the grinder table 4.
The follower roller 52 mounted on No. 1 also performs profile grinding.

When the machining of the intake cam 1IN is completed, the master cam 11 is separated from the follower roller 52 by the not-shown swing base 43 retreating cylinder.

Next, the grinding machine table 41 is indexed to a position corresponding to the grinding wheel 51 of the next exhaust cam 1EX, and the follower roller 52 is shifted to the position of the master cam EX. Copy grinding.

When the machining of the exhaust cam 1EX is completed, the master cam 11 is separated from the follower roller 52 and the work W
Indexing the longitudinal direction of the grinding machine table 41 so that the intake cam 2IN of the intake cam 2IN corresponds to the grinding wheel 51, and the follower roller 52 is again shifted to correspond to the intake cam generating master cam IN. The main shaft 10 is indexed by the phase angle between the intake cams 1IN and 2IN (180 ° for four cylinders and 120 ° for six cylinders in the engine of the above-described explosion sequence). The indexing of the work driving tool 1 is performed by the method described below (Figs. 2, 3, 4, 5 and 6). The index plate 4 and the index dog 5 are engaged with each other except during the indexing operation, and the gear 3 is rigid against the rotation through the index dog 5, the drive dog 6, and the work drive tool 2 to prevent the main shaft 10 from rotating.
And is rotating together with the main shaft 10. Therefore, the rotational speeds transmitted from the gears 3 and 17 to the gears 15 and 16 are equal, and the pulses generated by the first and second encoders 19 and 20 are equal.

The main shaft 10 is rotating without stopping. First, the solenoid SOL-1 of the pneumatic solenoid valve 53 is excited, compressed air is supplied to the B port, passes through the fluid pressure rotary joint 13 and enters the cylinder chamber 28 through the air passage 12B, and the index dog 5 moves backward. The engagement with the index plate 4 is released. At the same time, the drive dog 6 moves in the axial direction with respect to the work drive tool 2, but does not come off from the work drive tool 6. When the index dog 5 is retracted, the sensitive member 3
When the switch 9 operates the switch LS-2 (FIG. 2), the electromagnetic brake 14 is operated via a control circuit (not shown), and the braking shaft 33, the gears 18, 15, and 3, the driving tools 1 and 2, the drive dog 6, and the index. The spinning dog 5 stops rotating.
The solenoid SOL-1 of the pneumatic solenoid valve is de-energized by the signal of the switch LS-2 to set the pneumatic solenoid valve 53 to the neutral position, and the cylinder chambers 28 and 29 are communicated by the pneumatic solenoid valve 53 to the outside. Shut off the air. Due to such operation, thrust is not generated between the index dog 5 and the cylinder end member 27. The main shaft 10 is rotating. Shaft 3 for the first encoder
Since 2 stops and the first encoder 19 stops, the pulse from the first encoder 19 input to the comparator 61 shown in FIG. 7 becomes 0, which is caused by the pulse of the first encoder 19 in the comparator 61. The digital signal EI will not change. The pulse from the second encoder 20 is input and the counted digital signal E2 increases its value.
When the difference between the digital signals E2 and E1 causes a preset slight angle difference, the comparator 61 sends a signal to the sequencer 62, and the sequencer 62 sets the pulse motor 40 for the spindle to a constant speed via the speed controller 63. And slow down. The sequencer 62 receives the signal detected by the grinder table 41 of the axial position of the cam of the work W, which is not shown on the input side, and sends it to the comparator 61. The comparator 61 corresponds to the position of the grinder table 41. And stored in accordance with the desired indexing angle of the workpiece W, the digital signal E1 and the calculated digital signal (E2-E1), and the digital signal E2 is a value corresponding to the indexing position. When they are equal to each other, the comparator 61 sends a signal corresponding to the index position to the sequencer 62, the solenoid SOL-2 of the pneumatic solenoid valve 53 is excited based on the signal from the sequencer 62, and passes through the air passage 12A from the A port. Compressed air is sent to the cylinder chamber 29, and the index dog 5 moves forward to move the notch groove 4a of the index plate 4 (notch groove 4a- (5) in the case of four cylinders, In the case of cylinder Notsuchi groove 4a-
(4)), the switch LS-2 is deactivated, the switch LS-1 operates, the electromagnetic brake 14 is released, and the drive tool 1 and the main shaft 10 rotate integrally to complete the indexing.

Therefore, the intake cam 2IN can be profile-ground by using the intake cam generating master cam IN, and in the profile grinding of the next exhaust cam 2EX, the rotation indexing operation of the master cam is not necessary, and the follower roller 52 is replaced by the exhaust cam. It can be processed simply by shifting to the master cam EX for creation. (However, if the phase difference between 1IN and 2IN is different from the phase difference between 1EX and 2EX, use an index plate according to the phase difference and use 2IN for 1IN and 1EX.
Even with 2EX comrades, indexing is necessary. ) Similarly, when grinding the intake cams 3IN and 4IN, the work drive tool 1 is moved to a predetermined angle (0 → 180 for four cylinders).
° → 270 ° → 180 ° → 90 ° = 0, 6 cylinders 0
→ 120 ° → 120 ° → 180 ° → 240 ° → 240 ° → 180 ° = 0) Intake cam 3 while rotating and indexing
Grind IN, 4IN and exhaust cams 3EX, 4EX ... The last indexing angle (90 ° for four cylinders, 180 ° for six cylinders) of the predetermined indexing angle is for engaging the indexing fixture in its original position. When the last indexing angle is indexed, the index plate 4 and indexing dog 5 of the indexing fixture are engaged at the original position of the master cam top, and the comparator 61 sends the master cam top signal to the sequencer 62. Then, the sequencer 62 controls the operation following the end of grinding. As a result, four or six intake cams and one exhaust cam can be profile-ground by the master cam 11, which is one each.

When grinding other types of cams, it is only necessary to change the position of the follower roller 52 by arranging two sets of master cams for intake cam creation and exhaust cam creation side by side on the master cam 11 group.

In the embodiment, a pulse motor is used to drive the main shaft, but another variable speed motor may be used.

As described above, according to the embodiments of the present invention, (1) the master cam for one type of work is minimized.

(2) It is possible to incorporate a master cam for an extremely large number of types of works as compared with the conventional one.

(3) When grinding the engine cam, there is no variation in the profiles of the intake cam and the master cam in each cylinder.

(4) Since the indexing device is provided at the spindle end, the other parts except the circumference of the spindle around the spindle are the same as those of the conventional cam grinder, and the configuration is simple. Further, when a sleeve that fits into the main shaft is provided and the index dog and the cylinder end member are formed on the sleeve, the indexing device is unitized and can be attached to a conventional cam grinder as an attachment.

As described above, according to the present invention, each set of cams arranged in parallel in the axial direction have the same and the same angular position, and each set of the cams includes a plurality of cams arranged at different phases. It is a cam grinder capable of grinding various types of machines, and is provided with a table placed so as to be movable in the axial direction of the cam shaft, and is supported swingably around an axis parallel to the table moving direction on the table. A follower that is rotatably supported by the rocking base, supports one of the workpieces, has a main shaft with a master cam, and is in axial contact with one of the master cam groups. A roller is provided, one member of the indexing fixture is fixed to the end of the main shaft, and the other member of the indexing fixture is slidably and rotatably slid into the main shaft so as to be rotatable in the axial direction. The other member is rotatable around the main shaft end and does not move in the axial direction. The work drive tool is engaged with the work drive tool so as to be movable in the axial direction, and the braking device of the work drive tool, the axial drive device of the other member sliding into the main shaft of the indexing fixture, and the rotation of the work drive tool and the main shaft. In a cam grinder provided with means for detecting the angle of direction and a device for controlling the number of indexes of the indexing fixture by the detecting means, the axial driving device for the other member sliding into the main shaft of the indexing fixture is , A cylindrical inner circumference of the workpiece driving tool is slid into the outer circumference of one end side of the other member slid into the main shaft of the index fixing tool, and fixed to the main shaft at the inner circumference of the other end side of the indexing member. A fluid pressure cylinder is constructed by sliding the cylinder end member into the fluid pressure cylinder, a fluid passage to the fluid pressure cylinder is provided at the center of the spindle, and the fluid pressure source is provided through a fluid rotary joint having the fluid passage mounted at the rear end of the spindle. It is in communication with the work drive and the position of the work drive in the rotational direction of the spindle. Is an encoder interlocked with the main shaft, the axial drive device of the indexing fixture from the cam grinding machine, characterized in that the encoder interlocked with the workpiece drive device is a fluid pressure cylinder provided in the spindle nose,
The fluid passage for the pressure fluid to the fluid pressure cylinder is provided at the center of the spindle, and the pressure fluid is moved in and out by the rotary joint of the fluid mounted at the rear end of the spindle, so the spindle end side is compact and the shaft can be sealed. Can be protected from grinding debris and grinding fluid and equipped with encoders that work with the work drive and the spindle respectively, so that the index rotation angle of the work drive and the spindle can be detected without rotating the spindle.
There is no need for a fixed position stop device for the spindle, and the phase difference between the master cam and the work can be quickly indexed and changed.

[Brief description of drawings]

1 is a front view of the cradle of the cam grinder, FIG.
FIG. 3 is a longitudinal sectional view of an embodiment of the present invention, FIG. 4 is a front view of an index plate, FIG. 5 is an exploded perspective view of an indexing fixture, and FIG. 6 shows an operation of the embodiment of the present invention. The flow chart shown in FIG. 7 is a control block diagram. 1 ... Work drive tool, 2 ... Work drive tool, 3 ... Gear, 4 ... Index plate, 5 ... Index dog, 6 ... Drive dog, 10 ... Spindle, 11 ...
... master cam, 13 ... fluid pressure rotary joint, 14 ... electromagnetic brake, 15-18 ... gear, 19 ... first encoder, 20 ... second encoder, 22 ... bearing stand, 23
...... Bearing base, 24 ...... Bearing, 25 ...... Bearing, 27 ...... Cylinder end member, 28 ...... Cylinder chamber, 29 ...... Cylinder chamber, 31 ...... Drive gold, 32 ...... First encoder shaft, 3
3 ... Braking shaft, 34 ... Spindle drive pulley, 35 ...
Coupling, 36 ... Encoder shaft, 37 ... Pipe, 38
...... Seal ring, 39 …… (disc-shaped) sensitive member, 40 …… motor, 41 …… grinder table, 42 …… swing shaft, 43
...... Rotary base, 44 ...... Center, 45 ...... Tailstock, 46 ...
… Center, 47 …… (timing) pulley, 48 ……
(Timing) belt, 50 ... (timing) belt, 51 ... grinding wheel, 52 ... follower roller,
53 ... Pneumatic solenoid valve, 61 ... Comparator, 62 ... Sequencer, 63 ... Speed control device.

Claims (1)

[Claims] 1. A set of cams arranged in parallel in the axial direction are at the same and in the same relational angular position, and each set of the cams includes a plurality of camshafts including a plurality of cams arranged at different phases. A type of cam grinder capable of grinding, provided with a table movably mounted in the axial direction of the cam shaft, and supported on the table so as to be swingable about an axis parallel to the table moving direction. A follower roller that has a moving table, is rotatably supported by a rocking table, supports one side of a work, and has a main shaft with a master cam, is in contact with one of the master cam groups and is axially shiftable. One member of the indexing fixture is fixed to the end of the main shaft, and the other member of the indexing fixture is slidably and rotatably slid on the main shaft in the axial direction. The member is rotatably attached to the end of the spindle so that it does not move in the axial direction. The work drive is engaged with the work drive in an axially movable manner, and the work drive braking device, the axial drive of the other member that slides into the main shaft of the indexing fixture, and the angle between the work drive and the main shaft rotation direction. In the cam grinder provided with the detecting means and the device for controlling the indexing number of the indexing fixture by the detecting means, the axial driving device of the other member sliding in the main shaft of the indexing fixture is the indexing device. A cylinder end member in which the inner circumference of the cylinder of the workpiece driving tool is slid into the outer circumference on the one end side of the other member that has slid into the main shaft of the fixture, and is fixed to the main shaft on the inner circumference on the other end side of the indexing member. To form a fluid pressure cylinder, a fluid passage to the fluid pressure cylinder is provided at the center of the spindle, and the fluid passage is connected to a fluid pressure source through a fluid rotary joint mounted at the rear end of the spindle. And the means for detecting the position of the work drive and the spindle in the rotational direction is the spindle. An encoder for interlocking the cam grinding machine, characterized in that the encoder interlocked with the workpiece drive device.