JPH0435076Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a transmission case mounting device used when assembling a transmission case to an automobile engine.

(Prior art) A conventional method for assembling a transmission case to an engine is to rotate the engine's cylinder block assembly 90 degrees, with the transmission mounting side facing up, and suspend the transmission case using a hanging device. It was transported onto a cylinder block assembly and assembled by manually aligning both parts.

(Problem to be solved by the invention) In the conventional assembly method, the spline part at the tip of the main shaft of the transmission is hidden by the transmission case and clutch cover, so it is difficult to fit it into the serration hole of the clutch while visually checking it. Therefore, there was a risk of forcible fitting and damage to the serrations, making it impossible to assemble quickly.

(Means for Solving the Problems) In the present invention, an upper plate 51 is provided to be able to float with respect to a lower plate 48 on a slide 46 that conveys a transmission case 12, and a support member 52 is adjustable with respect to the upper plate. The transmission case 12 is set on this support member 52 in a state where it is substantially centered with respect to the clutch 3, and when the main shaft 16 of the transmission is engaged with the clutch 3, the upper plate 51 is floated and moved in the lateral direction. Even if there is a slight misalignment between the spline 16a of the main shaft 16 and the serration hole 3a, this is corrected and the two are fitted together. A pair of upper and lower plates 51, 48, an air chamber 57 recessed in at least one of the opposing surfaces of both plates 51, 48, and a plurality of steel ball sliding holes 66 bored in the opposing surface of one of the plates, A steel ball 65 is slidably inserted into the sliding hole 66, and a sliding hole 6 is bored in the opposing surface of the other plate opposite the sliding hole 66.
6, and air supply holes 58 and 66a communicating with the air chamber 57 and the sliding hole 66.
an adjustable support member 52 that supports the transmission case in a fixed position on the upper plate 51; and a drive source that slowly moves the transmission case forward on the support member 52 in the axial direction of a main shaft that supports the transmission case on the case. 68, a drive source 69 for slightly swinging the upper plate 51 in a direction intersecting the slow forward movement direction, and a slide 46 integrated with the lower plate 48.

(Function) When compressed air is supplied to the lower air supply hole 66a, the steel balls 65 engage with the steel ball seats 64 and fix the upper plate 51 at a fixed position with respect to the lower plate 48, so the mounting position Support member 5 with adjusted
By simply placing the transmission case 12 on the spline 16a, the spline 16a and the serration hole 3a are almost aligned. When the slide 46 is moved to the assembly position and the compressed air is switched to the upper supply hole 58, the compressed air flows into the air chamber 57 and is transferred to the transmission case 12 together with the upper plate 51 by the same action as an air bearing.
becomes floating.

If a minute reciprocating motion is applied to this by the drive source 69, even if there is a misalignment, it will be corrected and they will fit together easily.

(Example) In Fig. 1, 1 is a cylinder block, and a crankshaft 2, a clutch 3, and an oil van 4 are assembled to this to form a cylinder block assembly 1a. A keyway 5 is provided in the cylinder block 1, a reference hole 6 is provided on the top surface of the cylinder block 1, and a reference pin 7 is provided on the side surface.

The cylinder head 8 is provided with a reference pin 9 on its lower surface that fits into the reference hole 6, and is fixed to the cylinder block with stud bolts 10. A cam holder 11 is fixed to the upper part of the cylinder head 8 to constitute a cylinder head assembly 8a, and a conveying tool engages with a step on the side surface of the cam holder 11.

The transmission case 12 is provided with a reference hole 13 that fits into the reference pin 7 and a bolt hole 15 through which the mounting bolt 14 is inserted. A main shaft 16 having a spline 16a is provided.
Reference numeral 20 denotes a base of a device for assembling these elements, and a cylinder block assembly 1a is mounted in the center of the base.
A mounting jig 21 supporting the support member 2 is fixed, and the support member 2
2. The assembly 1a is held in place by the positioning member 23.

24 is a base fixed to the main body base 20 on the keyway 5 side of the crankshaft 2, and includes a column 25, a turning head 26, a vertical base 27 on the side surface of the head, a slide 28, a slide drive source 29, and a chuck device 30. It supports the cylinder head conveying device 31 consisting of etc.

As shown in FIG. 2, the chuck device 30 has an arm 32a of a supporting frame 32 connected to the slide 28, a locking pawl 33 at one end, and a long hole 34 at the other end, and a bent portion in the middle is connected to a pivot 35. A pair of locking levers 36 pivotally attached to the arms 33a and each elongated hole 34 of both locking levers 36
It consists of a drive source 39 that moves up and down an elevating shaft 38 with a pin 37 at the lower end that engages with the cylinder head assembly 8a, and lowers the locking pawl 33 to the steps formed on both sides of the cylinder head assembly 8a. After that, drive source 39
By this, the lifting shaft 38 can be pulled up, the locking lever 36 can be closed by the pin 37, and the locking pawl 33 can be locked to the stepped portion, and the cylinder head assembly 8a can be locked to the cylinder block by the operation of the drive source 29. 1, and by pushing down the elevating shaft 38, the elongated hole 34 is pushed with the pin 37, and the locking pawl 33 is opened and released. In the figure, 41 is a camshaft, 42 is a rocker arm shaft, and
A motor 43 slidingly guided on the base 24 is an engagement motor that drives a hollow shaft 44 provided with a key that engages with the keyway 5 .

Next, a slide base 45 is fixed to the clutch 3 side on the main body base 20, and the slide 4
6 is slidably guided and driven back and forth by a drive source (not shown).

The slide 46 includes a lower plate 48 of a floating support device 47 that supports the transmission case 12 in a floating manner.
A frame 49 facing the side and rear sides of the floating support device 47 is fixed.

An upper plate 51 is placed on the lower plate 48 of the floating support device 47, and a support member 52 and support legs 54 of the slide base 53 are placed on the plate 51.
is fixed and adjustable. Floating support device 47
As shown in FIGS. 3a, b and 4, an air chamber 57 is recessed in the lower surface 56 of the upper plate 51 opposite to the flat surface 55 of the lower plate 48,
By supplying pressurized air to the air chamber through the upper air supply hole 58 and the air passage 59, the upper plate 51 floats according to the same principle as an air bearing.
It is designed to be able to swing with a small amount of force. Note that this air chamber 57 may be provided on either or both of the surfaces 55 and 56. A plurality of stepped holes 60 are bored in the upper plate 51, and the holes 60
Since the head 62 of a positioning bolt 61 screwed through the lower plate 48 is engaged, the upper plate 51 can move laterally within the gap 63 between the two. However, the range of motion for both is
It can also be limited by the range of motion of the drive source 69, which will be described later.

The lower end of the air supply hole 58 is enlarged in diameter to form a ball seat 64 as shown in the figure, and opposite to this, the lower plate 48 has a steel ball slide for sliding a steel ball 65 in an almost airtight state. A moving hole 66 is bored, and a lower air supply hole 66a is connected to the lower end thereof.
When compressed air is supplied from the upper air supply hole 58,
The steel ball 66 falls downward, and the air flows out to the surroundings through the air chamber 57 while reaching the upper plate 5.
1 to surface. When the air supply is switched and air is supplied from the lower air supply hole 66a, the steel ball 65
The upper and lower plates 48 and 51 operate as pistons and rise and are pressed against the ball seat 64.
is held in a fixed position regulated by the positions of the steel ball seat 64 and the steel ball sliding hole 66. Note that the steel ball 65 is not a perfect sphere, but has a hole in the sliding hole 6.
The portion in contact with 6 can be made into a cylindrical surface to improve airtightness.

A pressing member 67 is slidably guided on the slide base 53 on the support leg 54 fixed on the upper plate 51. The main shaft 16 is inserted into the center hole of the clutch 3 of the cylinder block assembly 1a by making contact and receiving slow forward and backward movement from the drive source 68, pressing the transmission case 12 and sliding it on the support member 52. 2-stage spline 16
a into the two-stage serration hole 3a of the clutch 3.

Another drive source 69 is attached to the frame 49 of the slide 46, and its arm 69a
is connected to the support leg 54, and the upper plate 51 is slightly reciprocated via the support leg 54 in a direction intersecting the direction of movement of the drive source 68, thereby helping the upper plate 51 to fit into the serration hole 3a.

A bolt fastening device 70 is fixed to the frame 49 fixed to the slide 46 in addition to the drive sources 66 and 69. The fastening device includes two upper and lower guide bars 7.
1, and a nut runner 75 guided by a guide bar 71 and moved back and forth by a rod 74 of a drive source 73.
The bolt 14 fitted on the tip of the transmission case 12
The transmission case 12 is assembled by screwing it onto the cylinder block 1 through the hole 15 in the cylinder block 1.

Next, the assembly work using this engine assembly device will be explained.

The cylinder block assembly 1a, in which the cylinder block 1, crankshaft 2, clutch 3, oil pan 4, etc. are assembled, is held in place on a mounting jig 21 by a support member 22 and a positioning member 23. . The cylinder head assembly 8a is locked by the locking pawl 33 of the locking lever 36 of the chuck device 30 at a position where the rotating head 26 and the cylinder head conveying device 31 are rotated 90° to 180° from the position shown in FIG. Thereafter, when the cylinder head assembly 8a is rotated to the position shown in the figure and lowered by lowering the slide 28 on the vertical base 27 onto the cylinder block 1, the reference hole 6 and the reference pin 9 are fitted to accurately position the cylinder head assembly 8a. Therefore, the cylinder head 8 is fixed in the correct position by opening the chuck device 30, returning the cylinder head conveying device 31 to its original position, and screwing the nut onto the stud bolt 10. The transmission case is assembled at the same time or before or after the cylinder head is assembled, and the transmission case 12 is placed on the support member 52 together with the upper plate 51 on the slide 46, and the other end is driven. The pressing member 67 of the source 68 is brought into contact. At this time, the lower plate 48
Air is supplied to the lower air supply hole 66a of the fourth
As shown in the figure, the ball 65 locks the upper and lower plates 48, 51 fitted into the ball receiver 64 in a predetermined relative position.

In this state, the slide 46 is advanced, and at the same time the meshing motor 43 is advanced to fit the hollow shaft 44 to the end of the crankshaft 2, and the crankshaft 2 is slowly rotated via the key 5. Rotate the integrated clutch 3. Then, the two-stage spline 16a of the main shaft 16 in the transmission case 12
However, the slide 46 is stopped at a position close to the two-stage serration hole 3a of the clutch 3.

Next, the driving source 68 is activated to move the pressing member 67 on the slide base 53, and the pressing member 67 causes the transmission case 12 to slide on the supporting member 52 and slowly move forward, and at the same time, the air supply source is Switching to the air supply hole 58, air is supplied to the air chamber 57 to levitate the upper plate 51, and the drive source 69
As a result, the upper plate 51 is subjected to a slight reciprocating motion, that is, a slight rocking motion, in a direction crossing the direction of movement by the drive source 68, that is, in a lateral direction. Upper plate 5
1 is floating, this minute swing is easily performed, and its swing stroke is limited by the size of the gap 63 in the stepped hole 60.

In this way, the two-stage serration hole 3a of the clutch 3 rotates slowly, and the two-stage spline 1 of the main shaft 16 rotates slowly.
6a continues to slowly move forward and make slight swings while floating, so even if there is a mismatch between the axes of the two parts, the axes will temporarily match due to the swing, and the peaks and valleys of the serrations and splines will temporarily align due to the rotation. The two-stage spline 16a easily fits into the two-stage serration hole 3a, and at the same time the transmission case 12 moves forward and accurately contacts the cylinder block assembly 1a under the guidance of the reference pin 7 and reference hole 15. Then, they are connected by a plurality of bolt fastening devices 70, and the assembly is completed. At the same time, the air supply to the upper and lower air supply holes 58 and 66a of the floating support device 47 is switched, the upper plate is lowered, the support member 52 is separated from the transmission case 12, and the ball receiver 64 and the ball 65 are engaged. As a result, the upper plate 51 is held in a fixed position, and as the slide 46 retreats, the floating support device 47, drive sources 68, 69, bolt fastening device 70, etc. return to their original positions.

(Effect of the invention) According to the invention, the support member 5 is arranged so that the main shaft 16 of the transmission case 12 is concentric with the clutch 3 when the steel ball 65 is seated on the catch seat 64 using compressed air.
2, the transmission case 12 can be centered simply by placing it on the support member 12, and even if there is a misalignment due to product variations, it can be floated and swung using compressed air. Since instant centering can be performed and the spline 16a of the main shaft 16 can be quickly and easily fitted into the serration hole 3a of the clutch 3, it can be incorporated into an engine assembly device and the assembly device can be automated, improving efficiency. This will help achieve labor savings and labor savings at the same time.

[Brief explanation of the drawing]

The drawings show an engine assembly device using the transmission assembly mounting device of the present invention; FIG. 1 is a front view, FIG. 2 is a side view of the cylinder head conveying device, and FIG. 3a is a diagram of the floating support device. FIG. 3B is a partially longitudinal front view thereof, FIG. 4 is an enlarged sectional view of the floating support device, and FIG. 5 is a plan view of the bolt fastening device. DESCRIPTION OF SYMBOLS 1...Cylinder block, 1a...Cylinder block assembly, 3...Clutch, 3a...2-stage serration hole, 12...Transmission case, 16...
Main shaft, 16a...Two-stage spline, 21...Mounting jig, 31...Cylinder head transfer device, 46...
... Slide, 47 ... Floating support device, 48 ... Upper plate, 51 ... Lower plate, 57 ... Air chamber, 58 (66a) ... Air supply hole, 64 ...
Steel ball seat, 65... steel ball, 66... steel ball sliding hole,
68, 69... Drive source.

Claims (1)

[Scope of utility model registration request] A pair of upper and lower plates 51, 4 that overlap each other
8, an air chamber 57 recessed in at least one of the opposing surfaces of both plates 51 and 48, a plurality of steel ball sliding holes 66 bored in the opposing surface of one of the plates, and a plurality of steel ball sliding holes 66 in the sliding holes 66. A steel ball 65 slidably inserted, a steel ball seat 64 having a smaller diameter than the sliding hole 66, which is bored on the opposing surface of the other plate opposite the sliding hole 66,
Air supply holes 58 and 66a that communicate with the air chamber 57 and the sliding hole 66, and an adjustable support member 5 that supports the transmission case in position on the upper plate 51.
2, a drive source 68 that slowly moves the transmission case forward on the support member 52 in the axial direction of the main shaft that pivotally supports the transmission case, and a drive that slightly swings the upper plate 51 in a direction intersecting the slow forward movement direction. A mounting device for assembling a transmission, comprising a source 69 and a slide 46 integrated with a lower plate 48.