JPH0453866Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The disclosed technology performs bolt fastening when fastening a drive plate and a torque converter to freely transmit power in a block in which an automobile engine and transmission are temporarily assembled. It belongs to the technical field of the construction of devices that accurately determine position.

Therefore, this invention positions and sets an engine to be installed in a car on an engine tray with the engine and transmission temporarily assembled,
This invention relates to an indexing device that is conveyed by a conveyor to a torque converter and drive plate tightening process, stops, and is positioned and fastened by an indexing device that is waiting in that state, In particular, a servo motor for rotation of a socket for clamping the crank pulley bolt of the engine is installed opposite to the socket via an opening/closing device, and an indexing unit provided with a nut runner is used for positioning a camera, etc. for the crank pulley bolt. It has an optical detection device and is set on a base that can be moved laterally and vertically up and down, and the base is connected to a traverse servo motor and an up/down servo motor. This is a device-related idea.

<Prior Art> As is well known, the engine installed in an automobile is connected to a transmission for transmitting power to the wheels, but in recent years, in order to improve maneuverability, torque has been transferred between the engine and the transmission. In many cases, the converter is interposed and connected, and therefore, in the assembly process, the transmission is integrally assembled to the engine via the torque converter.

Therefore, as shown in Fig. 5, such an assembly is performed as follows.
In the assembly process, the transmission 2 is temporarily assembled to the engine 1, and a predetermined auxiliary device for assembly is set in the starter mounting hole 4 formed in the rear end plate 3 of the transmission 2, and manual operation is performed. Accordingly, the bolt holes 7 for tightening the drive plate 5 and the torque converter 6 are indexed.

Regarding such technology, for example,
This is disclosed in the device published in No. 43972 and the device published in Japanese Unexamined Utility Model Publication No. 62-44332.

<Problems to be solved by the invention> However, in this type of prior art, since indexing is performed through the starter mounting hole 4, the installation space is extremely narrow and high precision is required, as shown in FIG. There is a problem in which it is not possible to set the correct indexing device, and the distance from the starter mounting hole 4 to the drive plate 5 varies depending on the type of engine 1 and transmission 2. It is necessary to prepare a predetermined number of pinions with different sizes and shapes at the tip of the rotary shaft in correspondence with the type 2, and there is a problem in that selection and use and management are extremely cumbersome.

In addition, as mentioned above, due to the narrow installation space, multiple indexing auxiliary devices must be installed, which has the disadvantage that automatic setting is not possible, and as a result, indexing cannot be performed smoothly. It was hot.

<Purpose of the invention> The purpose of this invention is to solve the problem of position indexing for tightening and assembling the drive plate and torque converter to the torque converter with the engine transmission temporarily assembled based on the prior art described above. This is a technical issue to be solved, and even if the engine or transmission type is different, it can be automatically set for the engine with the transmission installed and the assembly position can be accurately determined. It is an object of the present invention to provide an excellent automotive torque converter drive plate fastening position indexing device that can be used in the field of assembly technology in the automotive industry.

<Means/effects for solving the problem> In line with the above-mentioned purpose, the structure of this invention, which is based on the scope of the above-mentioned utility model registration claim, is to solve the above-mentioned problem by accurately positioning the conveyor in the engine tray. The conveyor transports the block to the tightening position, and when the block reaches the tightening position, the tightening position indexing device optically detects the block and stops the conveyor, and the traverse servo motor installed in the space The elevating base can be moved up and down by two
The optical detection device moves dimensionally to detect the crank pulley bolt, and after detection, the optical detection device retracts, and then the indexing unit operates via the rotation servo motor to detect the engine crank pulley bolt. The socket is positioned and clamped against the crank pulley bolt, and then the torque converter drive plate tightening bolt is tightened at the position where it is gripped by the crank pulley bolt by the nut runner, and then the servo motor is tightened again. The next indexing is performed, and the bolts of the torque converter drive plate are sequentially tightened.In this way, automatic indexing is performed and the bolts are tightened, and when all the bolts are tightened, the socket is removed from the crank pulley bolt. After separation, the traverse servo motor and lifting servo motor operate in reverse, and the indexing device returns to its initial position along with the lifting base, and the block with the engine and transmission assembled via the torque converter is transported to the next stage. This technology has taken technical measures to ensure that

<Example> Next, an example of this invention will be described below based on FIGS. 1 to 4. It should be noted that FIG. 5 will be referred to and the same aspects will be described using the same reference numerals.

Reference numeral 10 denotes a torque converter drive plate fastening position indexing device which forms the center of the gist of this invention, and as shown in FIGS. Bearing guides 13, 13 of the same type are provided on bearing nuts 16, 16 of brackets 14, 15 installed horizontally on the lifting base 12 so as to be slidable in the vertical direction. A servo motor 17 is fixedly installed, and its ball screw 18 is screwed into a ball nut 20 of a bracket 19 to connect the bearing guide 1.
3 and 13 are movable up and down along bearing nuts 16 and 16, and the elevating base 21 is integrally movable up and down.

A plate 24 is provided on the elevating base 21 via a bearing guide 22 and a bearing nut 23, and a ball screw 26 is connected to a transverse servo motor 25 provided on one side of the elevating base 21 via a belt 26. Through ball screw nut 2
7 allows the plate 24 to move forward and backward in the lateral direction.

A base 30 is provided horizontally and can be moved back and forth vertically with respect to the plate 24 via a bearing guide 28. A camera base 33 is provided through a bearing guide 31 and a bearing nut 32, and a suitable rotary actuator 34 is placed thereon. The light source 38 and the hood 39 are also integrally pivotable.

An air cylinder 40 is provided at the base end of the camera base 33 to allow the camera base 33 to move forward and backward with respect to the plate 24.

An indexing unit 41, which will be described in detail below, is placed and fixed in the center of the base 30.

Incidentally, for convenience of illustration, the posture of the indexing unit 41 shown in FIG. 4 is different from the posture in the left-right direction in FIGS. 2 and 3, and is shown in a vertical posture in the vertical direction.

Therefore, in the indexing unit 41, the fourth
As shown in the figure, a servo motor 42 with a reduction gear is provided at the base of the base 30, and its rotating shaft 4
3 engages with an electromagnetic clutch 44 and is pivotally supported by a clutch plate 45 via a bearing 46.

A gear case 49 is provided on a bracket 47 provided adjacent to the clutch plate 45 via a bearing 48, a gear 50 is provided concentrically with the bracket 49, and a cap 51 is provided inside the gear case 4. At the same time, a bracket 53 is provided to engage the nut runner 54, and a gear 55 is provided on the rotating shaft of the nut runner 54 and meshes with the gear 50 to rotate the ball screw 56 of the gear 50. I am free to do so.

Thus, the ball screw 56 is attached to the sleeve 5.
The bracket 5 is screwed into the ball screw nut 59 at the base of the bracket 58 which can be slid freely through the bracket 7.
8 can move forward and backward.

Therefore, the rods 60, 60 provided on the brackets 47, 47 on the side of the servo motor 42 with the reducer
A bracket 61 is provided at the tip of each of the brackets and is connected to an outer cylinder 63 via a bearing 62.
The outer cylinder 63 connects the tip of the sleeve 57 with the bearing case 49, and also connects the bearing 64 with the sleeve 57.
The distal end of the ball screw 56 is pivotally supported through the shaft.

At the tip of the outer cylinder 63, a socket 67 that can be freely opened and closed on the left and right sides is provided with a pin 65 via a collar 66, and a socket 67 is provided that can be freely opened and closed on the left and right sides of the pin 65. clamp,
It can be unclamped freely.

Therefore, the servo motor 42 with a speed reducer includes an electromagnetic clutch 44, a clutch plate 45, a bracket 47, rods 60, 60, and flatkets 61, 61.
The outer cylinder 63, that is, the socket 67 can be pivoted through the nut runner 54.
By rotating the ball screw 56 through the meshing of the gears 55 and 50 and moving the bracket 58 forward and backward through the ball nut 59, the socket 67 can be freely opened and closed around the pin 65, and the socket 67 can be opened and closed against the crank pulley bolt 68. It is possible to clamp and unclamp.

When the socket 67 is clamping and gripping the crank pulley bolt 68 due to the rotation of the nut runner 54, the electromagnetic clutch 44 is
When it is in the OFF state and the socket with reducer 42 is operating and rotating its shaft 43, the electromagnetic clutch 44 is turned ON and the outer cylinder 63 can be rotated by a predetermined angle, and an indexing action is performed. It is like that.

In the above configuration, when the torque converter 6 and drive plate 5 for the engine 1 and transmission 2 are fastened together with bolts, as shown in FIG. The block 3 on which the engine 1 and the transmission 2 have been temporarily assembled is accurately positioned and placed on the engine tray 8 that has been assembled, and then transported as shown by the arrow to the positioning index 1 (not shown). The photoelectric detection device detects this and stops the conveyor 9.

Then, the elevating servo motor 17 and the traversing servo motor 25 of the fastening position indexing device 10, which were waiting at the relevant position, are activated to move the brackets 14, 15,
Then, the lifting base 21 is raised via the bearing guide 13, and the level of the base 30 is roughly aligned with the level of the crank pulley bolt 68 of the engine 1, thereby performing rough positioning.

Next, the air cylinder 40 is extended to advance the camera base 33 by a predetermined stroke, and the rotary actuator 34 provided on the camera base 33 is actuated to move the bracket 35 and arm 36 to move the camera 37 forward as shown in FIG. As shown by the arrow,
The position of the crank pulley bolt 68 is detected by the light source 39 by turning from the position b to the position a in FIG. 37, that is, the center of the socket 67, and the positioning is completed, the rotary actuator 34 and the air cylinder 40 are operated in reverse, and the camera 37 and the camera base 33 are aligned.
returns to its original position.

That is, when the camera 37 detects the center position and phase angle of the crank pulley bolt 68 via the arm 36 due to rotation by the rotary actuator 34 and detects a positional deviation with respect to the socket 67, the traverse servo motor and the elevating servo motor 17 The camera 37 is corrected by a slight movement, and the socket 67 and the crank pulley bolt 68 are aligned, and the phase is determined by a servo motor with a reduction gear.
is returned by the return movement of the rotary actuator 34, and returned to the current position by the air cylinder 12.

Therefore, the indexing unit 41 is an air cylinder 2
9, the base 35 is moved forward by a predetermined stroke, and the socket 67 is inserted into the crank pulley bolt 6
When the electromagnetic clamp 44 comes into contact with the
When the switch is turned OFF, the socket 67 comes into contact with the crank pulley bolt 68 in a free state.

Since the socket 67 is divided into two parts as mentioned above, even if the crank pulley bolt 68 and the socket 67 are out of phase due to the tapered surfaces facing each other on the inside, centering can be ensured and accurate. The two come into contact.

When the socket 67 comes into contact with the crank pulley bolt 11, the nut runner 54 rotates and the gears 55 and 50 mesh to rotate the ball screw 56, causing the bracket 58 to retreat via the screw nut 59 and close the socket. 67 is pin 6
5 to securely clamp the crank pulley bolt 68.

Then, the electromagnetic clutch 44 is turned ON, the rotation of the servo motor 42 with a reduction gear is transmitted to the outer cylinder 63, a predetermined indexing is performed, and the nut is tightened to the torque converter drive plate tightening bolt (not shown). Upon detection of a predetermined torque tightening, the torque converter drive plate fastening completion signal causes the reduction gear socket 42 to rotate by the next predetermined angle to index the next tightening position.

When the next tightening position is determined in this way, the torque converter drive plate tightening bolt is tightened again, and in this way the tightening work and the next tightening position are determined one after another. It will be done.

When the tightening of the torque converter drive plate by all the bolts and nuts is completed, the nut runner 54 is rotated in the reverse direction due to the completion signal, and the gear 5 is
5, 55, the ball screw 56 rotates in the opposite direction, and the screw nut 59 causes the bracket 58 to be rotated in the opposite direction.
moves forward, the socket 67 opens via the pin 65, the clamp on the crank pulley bolt 68 is released, the air cylinder 29 moves back and the socket 30 returns to its current position, and the lifting servo motor 17
The traverse servo motor 25 moves back and lifts the elevating base 2.
1 returns to the initial position and is made to wait for the next tightening positioning.

Then, when the engine preparation conveyor 9 is restarted and stops after the next engine tray 8 arrives at the fastening position, the above-mentioned positioning, indexing and fastening are automatically performed.

In this way, when the block 3 conveyed by the conveyor 9 is positioned in a predetermined position with the torque converter 6 and drive plate 5 temporarily assembled to the engine 1 and transmission 2, the block 3 is automatically indexed. The conclusion will be fully automatic.

It goes without saying that the embodiment of this invention is not limited to the above-mentioned embodiment, and various embodiments can be adopted, such as using a phototransistor, a photocoupler, etc. instead of a camera as a photoelectric detection device for the crank pulley bolt. It is.

Moreover, it is of course applicable not only to temporarily assembled engines and drive plates, but also to tightening and indexing of circular arrays that have a type of positioning protrusion, such as crank pulley bolts. be.

<Effects of the invention> As described above, according to this invention, basically, when determining the tightening position of the torque converter drive plate for a block in which a transmission is temporarily assembled to an engine, it is possible to easily determine the tightening position of the torque converter drive plate even if the type of engine or transmission is different. This provides an excellent effect in that the positioning and indexing of the torque converter and the drive plate and the bolt fastening can be performed fully automatically using a single device using the crank pulley bolt of the engine.

Therefore, it is only necessary to install one fastening position indexing device on the side of the engine preparation conveyor, so there is no interference with surrounding equipment, and since everything is done automatically, only one operation is necessary. This has the advantage that it is easy to manage, and maintenance, inspection, etc. are simple.

Further, since it is not necessary to use a starter mounting hole as in the conventional case, there is an advantage in that space is free and highly accurate indexing can be performed.

A photoelectric detection device performs rough positioning to accurate positioning of the temporary assembly block of the transmission and engine transported by the engine preparation conveyor, and after accurate positioning, the indexing unit is activated. The excellent effect of reliably indexing and automatically tightening bolts using the nut runner is achieved.

In addition, since everything from positioning to indexing and fastening is performed fully automatically, there is no need for any starting operations during that time, no skill is required, and there is the advantage that the work can be performed extremely perfectly.

[Brief explanation of the drawing]

The drawings are explanatory diagrams of one embodiment of this invention, in which Fig. 1 is a general schematic front view, Fig. 2 is a plan view of the assembly of the engine and transmission assembly block and the fastening position indexing device, and Fig. Figure 3 is a side view of the main part, Figure 4
5 is a partially sectional plan view of the indexing unit, and FIG. 5 is a perspective view showing the assembly positions of the engine, transmission, torque converter, and drive plate. 1... Index, 2... Transmission, 5
... Drive plate, 6 ... Torque converter, 10 ... Indexing device, 68 ... Crank pulley bolt, 67 ... Socket, 42 ... Servo motor, 56, 58 ... Switching device, 54 ... Nut runner, 41... Indexing unit, 37... Optical detection device, 30... Base, 25... Traverse servo motor, 17... Lifting socket.

Claims (1)

[Scope of utility model registration request] In an indexing device for the fastening position between a live plate and a torque converter when an automobile engine and transmission are temporarily assembled and in preparation for tightening, a servo motor for rotation with respect to a socket for an engine crank pulley bolt and the opening/closing of the socket are used. An indexing unit having an electromagnetic clutch provided between the crank pulley bolt and the crank pulley bolt is set on a displaceable base, and the base is linked to a traversing servo motor and a lifting servo motor. An automotive torque converter drive plate fastening position indexing device, characterized in that: