JP2009138532A - Assembling and fixing method and assembling and fixing device of driving cam member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an assembling and fixing method of a driving cam member capable of achieving automation by mechanically and continuously press-fitting a fixing pin to an outer peripheral hole of a driving cam member and inner peripheral holes of a driving shaft. <P>SOLUTION: The assembling and fixing device is provided with a positioning and fixing mechanism 41 for sandwiching and fixing the driving cam member 15 by two sandwiching members 41b and 41c through a pair of cutout surfaces 19a, a rotation driving mechanism for positioning the outer peripheral hole 19b of the driving cam member and the inner peripheral hole 13a of the driving shaft 13 by rotating the driving shaft 13, a press-fitting tool 43 for press-fitting the fixing pin 12 from the outer peripheral hole to the inner peripheral hole in accordance with lowering movement of a press machine 42, and a caulking punch 44 for caulking a hole edge part of the outer peripheral hole simultaneously with press-fitting of the fixing pin in accordance with further lowering movement of the press machine. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an assembling and fixing method and an assembling and fixing device in which a driving cam member is assembled and fixed to an outer periphery of a driving shaft used for, for example, a variable valve device of an internal combustion engine by a fixing pin.

  In the variable valve operating apparatus for a multi-cylinder internal combustion engine described in the following Patent Document 1, the rotational force of a drive cam member fixed to the outer peripheral surface of a drive shaft to which rotational force is transmitted from a crankshaft is linked arm. Then, it is converted into a swing motion by a transmission mechanism consisting of a rocker arm and a link rod and transmitted to the swing cam, and the intake valve is opened and closed via the valve lifter, and the rotational position of the control cam provided on the control shaft is controlled. Thus, the rocking fulcrum of the rocker arm is changed to variably control the valve lift amount of the intake valve.

As a conventional method for assembling and fixing the drive cam member, which is a separate member, to the long drive shaft extending in the longitudinal direction, the drive shaft extends along the radial direction corresponding to each cylinder. The outer peripheral side hole formed in the radial direction in the cylindrical portion of the drive cam member is aligned with the plurality of inner peripheral side holes formed in this manner while being aligned with each other. The drive cam member is fixed to the drive shaft by press-fitting a fixing pin from the side into the inner peripheral side hole.
JP 2006-161693 A

  However, since the plurality of inner peripheral side holes of the drive shaft have different positions in the circumferential direction for each cylinder, the press-fitting direction of the fixing pin when the drive cam member is assembled and fixed is also different.

  For this reason, the positioning operation in the rotational direction of each inner peripheral side hole of the drive shaft and the positioning operation of the drive cam member with respect to this in the assembling and fixing operation are extremely complicated, making automation difficult.

  The present invention has been devised in view of the complication of the conventional fixing operation of the drive cam member. As an assembly fixing method, in particular, the shaft of the drive cam member with respect to the drive shaft. A first step of inserting a positioning member for positioning in the direction together with the drive cam member, a second step of restricting axial movement of the drive cam member and the positioning member, and a circumferential direction of the drive cam member A third step of aligning the outer peripheral side hole and the inner peripheral side hole by rotating the drive shaft in a state where the position is regulated at a constant angle; and the aligned outer peripheral side hole and inner peripheral side hole A fourth step of press-fitting the fixing pin to fix the drive cam member to the drive shaft, and by sequentially repeating the third step and the fourth step, the plurality of drive cam members to the drive shaft. Communicating It is characterized by fixed assembled in manner.

  Further, as the assembly and fixing device, a positioning and fixing mechanism for holding a predetermined portion of the drive cam member by two holding members through the notch surface having the two-surface width, and rotating the drive shaft by a predetermined angle, A rotational drive mechanism for aligning the outer peripheral side hole of the positioned drive cam member and the inner peripheral side hole of the drive shaft, and a forward and backward movement with respect to one clamping member of the positioning fixing mechanism, and advancing movement A press-fitting jig for press-fitting the fixing pin from the outer peripheral side hole into the inner peripheral side hole, and the outer peripheral side hole provided by moving forward and backward with respect to the outer peripheral side of the press-fitting jig. A caulking punch for caulking the edge of the hole, and a control means for controlling the rotation of the rotation drive mechanism in order to align the positions of the outer peripheral hole and the inner peripheral hole. Octopus It is characterized in.

  According to the assembling and fixing method of the present invention, after the drive cam member is positioned in the axial direction, the drive cam member is positioned in the circumferential direction while rotating the drive shaft, so that the drive cam member is aligned with the outer peripheral side hole. Since the two inner peripheral holes are positioned and matched in the circumferential direction, and then the fixing pins are press-fitted, the assembly and fixing operation can be performed mechanically continuously, so that these can be automated.

  Further, according to the assembly and fixing device, in addition to the operation and effect of the invention, since the hole edge portion of the outer peripheral side hole can be continuously caulked with the fixing pin being press-fitted, it is possible to Assembling and fixing work efficiency can be further improved.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an assembly fixing method and an assembly fixing device for a drive cam member according to the present invention will be described below with reference to the drawings.

  In this embodiment, for example, a lift variable device (VEL) that can vary the operating angle and lift amount of an intake valve and an exhaust valve of an internal combustion engine described in, for example, the above-mentioned prior art application publications and JP-A-2001-55915. In addition, the present invention is applied to a drive shaft and a drive cam member of a variable valve operating apparatus provided with a valve timing control device (VTC) that variably controls the opening / closing timing of the intake valve. The internal combustion engine applied to the present embodiment is a so-called V type 6 cylinder, and the following description will be made on the 3 cylinder side of the one side bank.

  First, the lift variable device 1 will be briefly described with reference to FIG. 1. A cylinder head is slidably provided via a valve guide (not shown), and the valve springs 3 and 3 close the intake port in the closing direction. A pair of energized intake valves 2, 2, a variable mechanism 4 that variably controls the valve lift amount of each intake valve 2, 2, a control mechanism 5 that controls the operating position of the variable mechanism 4, and the control And an actuator 6 that rotationally drives the mechanism 5.

  The variable mechanism 4 is provided for each cylinder. The drive shaft 13 is rotatably supported by a bearing portion (not shown) provided in the upper portion of the cylinder head 1 and a fixing pin 12 is provided on the outer peripheral surface of the drive shaft 13. Is supported by the outer peripheral surface of the drive shaft 13 so as to be swingable, and is in sliding contact with the upper surfaces of the valve lifters 16 and 16 disposed at the upper ends of the intake valves 2 and 2. A swing cam constituting body 20 having two swing cams 17, 17 for opening the intake valves 2, 2, and a drive cam connected to the drive cam member 15 and the swing cam constituting body 20. A transmission mechanism that converts the rotational force of the member 15 into a swing motion and transmits the swing force to the swing cams 17 and 17 as a swing force.

  The drive shaft 13 is disposed along the longitudinal direction of the engine, and is driven by a crankshaft of the engine via a driven sprocket (not shown) provided at one end, a timing chain wound around the driven sprocket, and the like. 1 is rotated in the clockwise direction (arrow direction) in FIG.

  Further, as shown in FIGS. 2 and 3, the drive shaft 13 is formed in an internal hollow shape by an oil passage hole 14 penetratingly formed along the inner axial direction, and corresponds to each cylinder. Inner circumferential holes 13a, 13b, and 13c are formed at substantially equal intervals in the axial direction at positions of about 120 ° in the circumferential direction so as to penetrate along the radial direction. In addition, the drive shaft 13 is integrally provided with a mounting flange 13f fitted to the vane rotor when the valve timing control device (VTC) is assembled to the outer periphery of one end portion, and the front end surface of the mounting flange 13f. Positioning pins 7 for projecting in the circumferential direction with respect to the vane rotor are projected at predetermined positions in the direction. Further, the axial positioning is performed when the components of the three drive cam members 15 and the swing cams 17 are inserted from the other end side of the drive shaft 13 at the predetermined axial position on the one end side. A large-diameter step portion 13g for positioning is formed.

  Furthermore, the other end side of the drive shaft 13 is finally fully assembled when the plurality of drive cam members 15 and the swing cam constituting body 20 are fitted from the other end side. A cylindrical positioning member 8 that is positioned in the axial direction is fixed by a pin 9.

  In addition, although each said inner peripheral side hole 13a-13c is the same position of the circumferential direction in the said FIG. 2, for convenience, as shown in FIG. 4, it adjoins from the position of each drive cam member 15 correctly. Are formed at 120 ° positions in the circumferential direction. In addition, the inner diameter of each of the inner peripheral holes 13a to 13c is slightly smaller than the outer diameter of the fixing pin 12, and can be press-fitted.

  Each of the drive cam members 15 has a substantially ring shape having the same shape, and includes an annular drive cam 18 and a cylindrical portion 19 integrally provided on the outer end surface in the axial direction of the drive cam 15a. A drive shaft insertion hole 15a is formed so as to penetrate in the axial direction, and the axis Y of the drive cam 18 is eccentric from the axis X of the drive shaft 13 by a predetermined amount in the radial direction.

  Further, the cylindrical portion 19 has a pair of positioning notches 19a, 19a formed in a tangential direction on the outer peripheral surface along a tangential direction, and from a substantially central position of the notch 19a on one side. An outer peripheral side hole 19b is formed along the inner radial direction. The outer peripheral side hole 19b is formed so that its inner diameter is slightly smaller than the outer diameter of the fixing pin 12, so that the fixing pin 12 can be press-fitted. Furthermore, a small-diameter hole 19c that functions as an air vent hole when the fixing pin 12 is press-fitted from the outer peripheral side hole 19b into the inner peripheral side hole 13a is formed at a substantially central position of the other notch surface 19a. ing.

  Further, three drive cam members 15 are arranged at three positions in the axial direction with respect to the one drive shaft 13.

  The two swing cams 17 are substantially in the form of raindrops of the same shape, and are integrally provided at both ends of a cylindrical portion 17a that is rotatably supported on the outer peripheral surface of the drive shaft 13, and a cam nose on the lower surface. A cam surface 22 extending from the portion 21 toward the cylindrical portion 17a and in sliding contact with each valve lifter 16 is formed. Further, the cylindrical portion 17a has an oil hole 17b that is appropriately communicated with the radial hole 13d in the oil passage hole 14 at a position of a journal portion formed at a substantially central position in the axial direction. Lubricating oil that has flowed out from the bearing is lubricated between the bearings and the bearings (not shown).

  Further, the rocking cam constituting body 20 constituted by the cylindrical portion 17a and the rocking cams 17 and 17 includes three rocking cam members 15 on the outer peripheral surface of the driving shaft 13 between the driving cam members 15 from the axial direction. Two cylindrical positioning spacers 11 for axial positioning are interposed between the drive cam member 15 and the drive cam member 15.

  As shown in FIG. 1, the transmission means includes a rocker arm 23 disposed above the drive shaft 13, a link arm 24 linking one end of the rocker arm 23 and the drive cam 18, and the other end of the rocker arm 23. And a link rod 25 that links the swing cam 17.

  The rocker arm 23 has a cylindrical base portion at the center thereof rotatably supported by a control cam 33 (to be described later) through a support hole, and the one end portion protruding from the outer end portion of the cylindrical base portion is a pin. The other end of the link arm 24 is also rotatably connected to one end of the link rod 25 by a pin 26.

  The other end of the link rod 25 is rotatably connected to the cam nose 21 of the swing cam 17 via a pin 27.

  As shown in FIG. 1, the control mechanism 5 includes a control shaft 28 that is rotatably supported by the same bearing at a position above the drive shaft 13, and is fixed to the outer periphery of the control shaft 28 in a support hole of the rocker arm 23. A control cam 29 that is slidably inserted and serves as a rocking fulcrum of the rocker arm 23 is provided.

  The control shaft 28 is disposed in the longitudinal direction of the engine in parallel with the drive shaft 13, and a journal portion at a predetermined position is rotatably supported between a main bracket and a sub bracket of the bearing.

  The control cam 29 has a cylindrical shape, and the axial center position is deviated from the axial center of the control shaft 28 by a predetermined amount.

  The actuator 6 includes an electric motor 30 fixed to one end portion of a housing (not shown) attached to the rear end portion of the cylinder head 1, and a rotational driving force of the electric motor 30 provided inside the housing. And a ball screw transmission mechanism 31 which is a speed reduction mechanism for transmitting to 28.

  The electric motor 30 is controlled to rotate forward and backward by a controller 32 that detects a current engine operating state by various sensors such as a crank sensor.

  The valve timing control mechanism (VTC) is of a general vane type, and a sprocket for transmitting rotational force from the crankshaft is integrally formed on the outer periphery of a cylindrical housing whose front and rear end openings are closed by plates. On the other hand, a vane member is accommodated in the housing so as to be relatively rotatable, and a tip end portion of the drive shaft 13 is bolted to the rotor of the vane member from the axial direction. Then, hydraulic pressure is selectively supplied to and discharged from the advance oil chamber and the retard oil chamber formed between the vane member and the housing via a hydraulic circuit, so that the crank is provided via the vane member and the housing. The relative rotation phase between the shaft and the camshaft is converted.

  Next, an assembly fixing device and assembly fixing procedure of the drive cam member 15 with respect to the drive shaft 13 will be described with reference to FIGS.

  First, the assembly and fixing device will be described. Positioning that is provided in the upper part of the base 40 and that holds both the notch surfaces 19a and 19a of the cylindrical portion 19 of the drive cam member 15 in a sandwiched state and performs positioning in the rotational direction. A fixing mechanism 41; a pressing machine 42 arranged above the positioning and fixing mechanism 41; and a bar-shaped press-fitting projecting vertically downward from the lower surface of the pressing machine 2 to press the fixing pin 12 A jig 43, a caulking punch 44 for caulking the hole edge of the outer peripheral side hole 19b by moving forward and backward by being provided in the positioning and fixing mechanism 41, and a rotational drive mechanism for rotating the drive shaft 13. And a control means (not shown) for controlling the rotation of the rotation drive mechanism.

  The positioning and fixing mechanism 41 is formed in a substantially U-shape, and moves vertically with respect to both upper and lower sides of the fixing mechanism main body 41a located on one side so that the cylindrical portion 19 is moved to the notch surfaces 19a and 19a. A pair of clamping members 41b and 41c that are clamped and fixed via the base plate 40 are provided and supported from below by a backup jig 40a provided on the base 40.

  The press machine 42 is provided with an actuator 42a for driving up and down at the upper part, and the press-fitting jig 43 is attached at a substantially central position at the lower part. A stopper member 42b for restricting the maximum lowering position of the caulking punch 44 is provided on the left side in the lower drawing.

  As shown in FIG. 8, the press-fitting jig 43 is fixed in a state where the stopper member 42b is in contact with the upper surface of the fixing mechanism main body 41a and further lowering is restricted. The length is set so that the pin 12 is completely press-fitted, and the outer diameter is set slightly smaller than the fixing pin 12.

  Further, a guide hole 41d having a relatively large diameter through which the caulking punch 44 is slidably guided up and down is formed at a substantially central position of the upper clamping member 41b.

  The caulking punch 44 is formed in a substantially cylindrical shape, and a guide hole 44a for guiding the fixing pin 12 is formed through the upper and lower sides in the inner axial direction. The flange portion 44b that receives the pressing force from the first is integrally formed. On the other hand, a pair of caulking projections 44c, 44c for caulking and deforming the upper end hole edge of the outer peripheral hole 19 by pressing force are integrally provided at the hole edge of the guide hole 44a at the lower end. The caulking punch 44 is urged upward by an urging means (not shown) and is regulated by the regulating means to the maximum ascending position shown in FIG.

  As shown in FIG. 4, the rotary drive mechanism has a support jig 45 for supporting one end of the drive shaft 13 from the axial direction, and a center chuck 46 is provided on the opposite side of the support jig 45. And a drive unit made of an electric motor (not shown) that rotates the drive shaft 13 by rotating the support jig 45. In the support jig 45, the fitting hole of the cylindrical front end support portion 45a is fitted into the positioning pin 7 provided on the mounting flange 13f at one end of the drive shaft, and the positioning pin 7 is rotated. This is the reference point for control. The center chuck 46 is rotatably supported on the axis X of the other end of the drive shaft 13.

  The control means is mainly constituted by an electronic controller, and outputs a control current to the electric motor of the rotary drive mechanism with the positioning pin 7 as a reference when the drive cam member 15 and the swing cam 17 are assembled and fixed to the drive shaft 13. The rotation drive is controlled.

  The assembly and fixing work procedure will be described below. First, the three drive cam members 15, the two positioning spacers 11, and the three swing cam components are respectively inserted from the other end of the drive shaft 13. At the same time, the whole is moved in the axial direction until one drive cam member 15 hits the stepped portion 13g (first step).

  Thereafter, the positioning member 8 is fixed by pins 9. As a result, the axial positioning of each component such as the drive cam member 15 is completed (second step).

  Next, in this state, the cylindrical member 19 of one drive cam member 15 is fixed to the clamping state by the both clamping members 41b and 41c of the positioning and fixing mechanism 41 via the both notched surfaces 19a and 19a, and the workpiece is set. Subsequently, the rotational position of the drive shaft 13 is determined by the rotational drive mechanism with reference to the positioning pin 7, and the inner peripheral holes 13a and 13a are positioned substantially coaxially with the outer peripheral hole 19b. Combine (third step).

  Next, as shown in FIG. 6, the fixing pin 12 is set in the guide hole 44a. At this time, the fixing pin 12 is in a state where the outer peripheral edge of the lower end is in contact with the outer hole edge of the outer peripheral side hole 19b.

  Thereafter, as shown in FIG. 7, the press machine 42 is moved downward, and the fixing pin 12 is moved from the outer peripheral side hole 19b to the inner peripheral side holes 13a and 13a of the drive shaft 13 by the press-fitting jig 43 by a predetermined length. Just press-fit (fourth step).

  At this time, the tip of the fixing pin 12 is in a state of being separated from the inner hole edge of the small diameter hole 19c with a predetermined gap.

  Subsequently, as shown in FIG. 8, the press machine 42 further moves downward, and the lower surface of the press machine 42 comes into contact with the upper surface of the flange portion 44b to push down the caulking punch 44 against the urging force of the urging means. The stopper pin 42 is further pushed down until the stopper member 42b comes into contact with the upper surface of the fixing mechanism main body 41a and further movement thereof is restricted, and the leading edge abuts against the inner hole edge of the small diameter hole 19. And the caulking punch 44 is moved downward.

  As a result, the two caulking projections 44c, 44c are strongly pressed and plastically deformed in the radial direction of the hole edge of the outer peripheral side hole 19b (fifth step). For this reason, the fixing pin 12 is firmly fixed in each of the holes 19b, 13a, and 13a, and a strong coupling state of the drive cam member 15 to the drive shaft 13 is obtained.

  Next, when the press machine 42 is moved upward, the caulking punch 44 is raised by the urging means, and the press-fitting jig 43 is raised to complete operations such as caulking and press-fitting. Subsequently, the clamping members 41 b and 41 c are moved to release the clamping state with respect to the tubular portion 19.

  Therefore, after that, the entire constituent member such as the drive shaft 13 is moved in the axial direction, and the second drive cam member 15 is clamped and fixed by the both clamp members 41b and 41c by the same operation as described above, and then controlled by the electronic controller. In response to the signal, the drive shaft 13 is rotated to an angle of about 120 ° through a rotation drive mechanism with the positioning pin 7 as a reference, and the outer peripheral side hole 19b and the inner peripheral side holes 13a and 13a are positioned. After that, a series of operations are continuously performed by repeating each process of the press-fitting operation and the caulking process of the fixing pin 12 as described above.

  As described above, after positioning the drive cam member 15 and the swing cam constituent body in the axial direction with respect to the drive shaft 13 using the positioning spacer 11 and the positioning member 8, the drive cam 13 is rotated while rotating. As a result of positioning in the direction, the inner peripheral holes 13a and 13a are positioned and matched with respect to the outer peripheral side hole 19b of the drive cam member 15 from the peripheral direction, and then the fixing pin 12 is press-fitted. The fixing operation can be performed mechanically continuously. As a result, these can be automated.

  Further, according to the assembly and fixing device, since the fixing pin 12 can be continuously caulked at the hole edge of the outer peripheral side hole 19b in a state where the fixing pins 12 are press-fitted into the holes 19b, 13a and 13a, it is automated. Assembling and fixing work efficiency can be further improved.

  Further, in order to detect the rotational position of the drive shaft 13, it is not necessary to detect the positions of the inner peripheral holes 13a, 13a of the drive shaft 13, and the positions of the inner peripheral holes 13a with the positioning pin 7 as a reference position. Therefore, the press-fitting work of the fixing pin 12 becomes extremely easy.

  Further, by using the positioning pin 7, it is not necessary to newly provide a positioning member, so that the manufacturing operation and the detection operation are further facilitated.

  Furthermore, since the two notches 19a and 19a of the two-sided width of the cylindrical portion 19 are used for press-fitting the fixing pin 12, there is no need to provide a new positioning portion. Work becomes better.

  In addition, as described above, the press-fitting operation of the fixing pin 12 and the caulking operation of the hole edge can be performed by the same press machine 42, so that the cost can be significantly reduced as compared with the case of using separate press machines. Can be achieved.

  Further, since the maximum lowered position of the press machine 42 can be regulated by the stopper member 42b having a simple structure, the cost can be reduced also in this respect.

  The present invention is not limited to the configuration of the above embodiment, and the structure of the positioning and fixing mechanism 41, the press machine 42, etc. can be arbitrarily changed. The present invention can also be applied to a drive cam member.

It is a principal part perspective view which shows the variable valve apparatus to which the drive shaft and drive cam member of this invention are applied. It is a longitudinal cross-sectional view which shows the state in which the drive cam member and the rocking cam were positioned by the drive shaft of a present Example. FIG. 3 is a partially enlarged view of FIG. 2. It is a longitudinal cross-sectional view which shows the state in which the drive cam member and the rocking cam were positioned by the drive shaft of a present Example. It is the schematic which shows the 1st process of the assembly fixing method of a present Example. It is the schematic which shows a 2nd process. It is the schematic which shows a 3rd process. It is the schematic which shows a 4th process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 7 ... Positioning pin 8 ... Positioning member 11 ... Positioning spacer 12 ... Fixing pin 13 ... Drive shaft 13a ... Inner peripheral side hole 13g ... Step part 15 ... Drive cam member 17 ... Swing cam 17a ... Cylindrical part 18 ... Drive cam DESCRIPTION OF SYMBOLS 19 ... Cylindrical part 19a ... Notch surface 19b ... Outer peripheral side hole 20 ... Oscillating cam structure 40 ... Base 41 ... Positioning fixing mechanism 42 ... Press machine 43 ... Press fitting jig 44 ... Caulking punch

Claims (8)

A plurality of inner peripheral side holes respectively provided at different positions in the axial direction and the circumferential direction of the drive shaft, and a drive cam member having a drive cam that is fitted on the outer periphery of the drive shaft, An outer peripheral side hole formed at a position corresponding to the side hole, and for fixing the inner peripheral side hole and the outer peripheral side hole from one end side of the outer peripheral side hole into the inner peripheral side hole in a state of alignment. An assembly fixing method for press-fitting a pin and assembling and fixing the plurality of drive cam members to the drive shaft,
A first step of inserting a positioning member for positioning the driving cam member in the axial direction with respect to the driving shaft together with the driving cam when inserted into the driving shaft in the axial direction;
A second step of restricting axial movement of the drive cam member and the positioning member;
A third step of aligning the outer peripheral side hole and the inner peripheral side hole by rotating the drive shaft in a state where the circumferential position of the drive cam member is regulated at a constant angle;
A fourth step of press-fitting the fixing pin into the aligned outer peripheral side hole and inner peripheral side hole and fixing the drive cam member to the drive shaft,
A method of assembling and fixing a drive cam member, wherein the plurality of drive cam members are continuously assembled and fixed to the drive shaft by sequentially repeating the third step and the fourth step. The rotary motion of the drive cam provided on the drive shaft to which the rotational force is transmitted from the crankshaft is converted into the swing motion of the swing cam, and the swing amount of the swing cam is changed by the movement of the control shaft. In a variable valve gear that changes the operating characteristics of the valve,
A plurality of inner peripheral side holes respectively provided at different positions in the axial direction and the circumferential direction of the drive shaft, and a drive cam member having a drive cam that is fitted on the outer periphery of the drive shaft, An outer peripheral side hole formed at a position corresponding to the side hole, and for fixing the inner peripheral side hole and the outer peripheral side hole from one end side of the outer peripheral side hole into the inner peripheral side hole in a state of alignment. An assembly fixing method for press-fitting a pin and assembling and fixing the plurality of drive cam members to the drive shaft,
From the one end side of the drive shaft, axial movement is performed on the other end side of the drive shaft while sequentially inserting and inserting the swing cam between the drive cam members and the drive cams in the axial direction. A first step to be regulated;
A second step of restricting movement of the drive cam member and the swing cam in the axial direction by fixing a restriction member to one end of the drive shaft;
A third step of aligning the outer peripheral side hole and the inner peripheral side hole by rotating the drive shaft in a state where the circumferential position of the drive cam member is regulated at a constant angle;
A fourth step of press-fitting the fixing pin into the aligned outer peripheral side hole and inner peripheral side hole and fixing the drive cam member to the drive shaft,
A method of assembling and fixing a drive cam member, wherein the plurality of drive cam members are continuously assembled and fixed to the drive shaft by repeating the third step and the fourth step. In the assembly fixing method of the drive cam member described in Claim 2,
A positioning pin for positioning the valve timing control device for controlling the opening / closing timing of the engine valve in the circumferential direction is provided at the axial end of the drive shaft,
The method of assembling and fixing the drive cam member, wherein in the third step, the rotation angle of the drive shaft is determined based on the positioning pin. In the assembly fixing method of the drive cam member described in Claim 2,
A notch surface having a two-sided width is formed in advance along the axial direction on the outer peripheral surface of the drive cam member, and the outer peripheral side hole is formed along the inner radial direction from the notch surface. An assembling and fixing method of the drive cam member as a feature. In the assembly fixing method of the drive cam member described in Claim 2,
A method of assembling and fixing the drive cam member, wherein after the fourth step, caulking is performed on a hole edge portion of the outer peripheral side hole. The rotational motion of the drive cam member provided on the outer periphery of the drive shaft to which the rotational force is transmitted from the crankshaft is converted into the swing motion of the swing cam, and the swing amount of the swing cam is changed by the movement of the control shaft. In the variable valve operating device that changes the operating characteristics of the engine valve,
A plurality of inner peripheral side holes respectively provided at different positions in the axial direction and the circumferential direction of the drive shaft, and an internal radial direction from a notch surface for positioning in the form of a two-sided width formed on a predetermined outer peripheral surface of the drive cam member A fixing pin is press-fitted into the inner peripheral side hole from one end side of the outer peripheral side hole in a state where the inner peripheral side hole and the outer peripheral side hole are aligned. Assembly fixing device for assembling and fixing a plurality of drive cam members to the drive shaft,
A positioning and fixing mechanism that sandwiches a predetermined portion of the drive cam member with two sandwiching members through the notch surface having the two-surface width;
A rotation drive mechanism for rotating the drive shaft by a predetermined angle to align the outer peripheral side hole of the positioned drive cam member with the inner peripheral side hole of the drive shaft;
A press-fitting jig that is provided so as to be movable back and forth with respect to one clamping member of the positioning and fixing mechanism, and press-fits the fixing pin from the outer peripheral side hole to the inner peripheral side hole by moving forward;
A caulking punch that is provided so as to be movable forward and backward with respect to the outer peripheral side of the press-fitting jig, and that caulks the edge of the outer peripheral side hole by moving forward;
Control means for controlling the rotation of the rotation drive mechanism in order to align the positions of the outer peripheral side hole and the inner peripheral side hole;
An assembly fixing device for a drive cam member, comprising: In the assembly fixing device of the drive cam member according to claim 6,
The advancing movement of the press-fitting jig and the caulking punch is configured to be performed by a common press machine,
Before the press machine moves the press-fit jig forward, the caulking punch is separated from the press-fit jig in the forward direction, and the press-fit jig moves forward and is fixed. An assembly fixing device for a drive cam member, wherein the press punching machine moves forward after the press-fitting into the outer peripheral side hole and the inner peripheral side hole of the working pin is completed. In the assembly fixing device of the drive cam member according to claim 6,
A positioning pin for positioning the valve timing control device for controlling the opening / closing timing of the engine valve in the circumferential direction is provided at the axial end of the drive shaft,
An assembly fixing device for a drive cam member, wherein the control means controls the rotation drive mechanism on the basis of the position of the positioning pin.

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