JPH0627301Y2 - Parts assembly device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) The present invention relates to a parts assembling apparatus used for assembling a plurality of parts to a work arranged on a support base by press fitting and other mounting modes. .

(Prior Art) In a power transmission mechanism having a structure in which an automatic transmission coupled to a vehicle engine and a differential device are integrated, a converter housing that accommodates a torque converter in the automatic transmission is provided in a converter accommodating portion. In addition, a differential accommodating portion in which the differential device is arranged is provided. When assembling such a power transmission mechanism, a bearing cover, through which the output shaft of the torque converter is inserted, is assembled by bolting into a through hole formed in the converter housing portion of the converter housing, and at the same time, the differential housing is installed. A differential bearing for supporting the shaft of the differential device and an oil seal accompanying the differential bearing are assembled by press fitting into a through hole formed in the portion. Therefore, for the converter housing, press-fitting work for assembling the differential bearing and oil seal,
Combined work with bolting work for assembling the bearing cover will be performed.

In general, press-fitting work for assembling parts to a fixed member by press-fitting and bolt-tightening work for assembling parts to a fixed member by bolts are performed by different assembling devices at different work places. For example, the press-fitting work is performed by using a press-fitting machine using hydraulic pressure or pneumatic pressure, while the bolt tightening work is performed by a torque wrench operated by an operator. The tightening device is used. Then, even when the above-described composite work is performed on the converter housing, normally, the press-fitting work for assembling the differential bearing and the oil seal and the bolt tightening work for assembling the bearing cover to the converter housing are performed respectively. It is performed by a press-fitting machine and a tightening device such as a torque wrench installed in separate work places.

(Problems to be solved by the invention) However, as described above, when the composite work for the converter housing is performed, the press-fitting work for assembling the differential bearing and the oil seal and the bolt for assembling the bearing cover to the converter housing are performed. When the tightening work is performed in separate work places, it takes time to transfer the converter housing to each work place and set the position in each work place. In this case, the standby time becomes long due to the work preparation, etc., and the work efficiency becomes low, and further, for example, there is a great possibility that the bearing cover may not be attached to the converter housing.

In this connection, a combined work of press-fitting work and bolting work for assembling a plurality of members to a member such as the converter housing described above is performed with the member to be assembled being fixed at one place. A combined press-fitting / tightening device that can be performed is disclosed in, for example, Japanese Patent Laid-Open No. 61-249231.
It is proposed in the publication. However, such a press-fitting / tightening combined device as conventionally proposed is
There is a problem that the structure becomes complicated and relatively expensive, and when it is introduced, the equipment cost increases.

In view of such a point, the present invention has a simplified structure,
With the installation cost kept relatively low,
It is possible to perform complex work for assembling a plurality of parts by press fitting and other mounting modes to the work arranged on the support base, and yet, each work is sufficiently safe for the worker associated therewith. It is an object of the present invention to provide a parts assembling apparatus that is performed under the condition that

(Means for Solving the Problem) In order to achieve the above-mentioned object, the component assembling apparatus according to the present invention is provided with respect to a work support table that supports a work to which at least first and second components are to be assembled. , Moves to and away from the work, and when the work is moved toward and away from the work, the first part is press-fitted into the work and the work is then fixed on the work support base. And a movable press-fitting means for sending a position detection signal when the component press-fitting position is set, and a part mounting position close to the work is taken to assemble the second part to the work. And a component assembling means which is operated to perform the operation and sends an assembling end signal after the assembling of the second component is completed. Further, the movable press-fitting means is caused to take a component press-fitting position. The pressure of the first part When the movable press-fitting means is confirmed to be at the component press-fitting position based on the position detection signal, the component assembling means is caused to take the part assembling position, and the second component is assembled. After the assembling, the control means is provided for controlling the movable press-fitting means to move the work away from the work in response to the assembling end signal.

(Operation) In the component assembling apparatus according to the present invention having the above-mentioned configuration, the movable press-fitting means and the component assembling means are individually arranged with respect to the work support table, and the movable press-fitting means is provided. And the moving operation of the component assembling means is controlled by the control means, and has a relatively simple structure, whereby the installation cost can be kept relatively low. The press-fitting of the parts and the assembling of the second parts will be performed. Then, the first component is press-fitted into the work by the movable press-fitting means without the risk that the part-assembling means is operated to assemble the second part into the work, and the work-fitting to the part-assembling means is performed. The operation for assembling the second component to the workpiece is limited to the component press-fitting position for fixing the workpiece on the workpiece support after the movable press-fitting means has assembled the workpiece by press-fitting the first component. Further, the movable press-fitting means separates the work from the work only after the assembly of the second part with respect to the work by the part assembling means is completed. Sufficient safety is ensured for the operator who operates the assembling means.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show an example of a parts assembling apparatus according to the present invention, together with a work on which parts are assembled and parts to be assembled on the work.

The example shown in FIGS. 1 and 2 has a converter housing W as a work, which is provided in a power transmission mechanism having a structure in which an automatic transmission connected to a vehicle engine and a differential device are integrated, and the converter is used as the converter. A differential bearing Bd for supporting a shaft of the differential device and an oil seal Os are press-fitted into a through hole Pa formed in the differential accommodating portion Wa of the housing W, and are formed in the converter accommodating portion Wb. The bearing cover Hb into which the output shaft of the torque converter is inserted into the through hole Pb.
However, it is supposed to be assembled by bolting.

In the examples shown in FIGS. 1 and 2, the work support base 1 is provided which supports and positions the converter housing W and conveys the converter housing W. Positioning of the converter housing W is performed by fixing the converter housing W on the work support base 1 by the pins 13 as shown in FIG. Above the work support 1,
A hydraulic cylinder 3 attached to the support structure 2 is arranged, and a hydraulic cylinder 4 attached to the support structure 2 is arranged below the work support base 1. The rod portion 3a of the hydraulic cylinder 3 and the rod portion 4 of the hydraulic cylinder 4
Rams 5 and 6 are provided at the tip ends of the respective a's, and these rams 5 and 6 are coaxially opposed to each other. Then, the ram 5 is actuated by the hydraulic cylinder 3 so that the differential accommodating portion Wa of the converter housing W supported and positioned by the work supporting base 1 is positioned.
Of the converter housing W supported by the work support base 1 and positioned by the hydraulic cylinder 4 when the hydraulic cylinder 4 is operated. The through hole portion Pa in the portion Wa is moved up and down so as to move toward and away from the through hole portion Pa.

Further, in relation to the rams 5 and 6, an oil seal feeder 7 that supplies an oil seal Os to the ram 5, and a differential bearing B to the ram 6.
A bearing feeder 8 for supplying d is provided. The oil seal Os supplied from the oil seal feeder 7 is fitted and attached to the tip of the ram 5 as shown in FIG. 2, and the ram 5 is supported by the work support base 1 and positioned. When the housing W is moved toward the through hole portion Pa in the differential accommodating portion Wa to take the lowered position, the housing W is pressed into the through hole portion Pa from above. On the other hand, as shown in FIG. 2, the differential bearing Bd supplied from the bearing feeder 8 is fitted and attached to the tip of the ram 6, and the ram 6 is supported and positioned by the work support 1. When the converter housing W is moved toward the through hole portion Pa in the differential accommodating portion Wa to take the raised position, the through hole portion P is formed.
It is press-fitted into a from below. At this time, the ram 6 penetrates the through hole 15 provided at a position corresponding to the through hole portion Pa in the work support 1 from below. Rum 5
The lower position and the raised position of the ram 6 are the component press-fitting positions. When the ram 5 and the ram 6 assume the component press-fitting positions, respectively, the oil seal Os is provided in the through hole Pa in the differential accommodating portion Wa of the converter housing W. And the differential bearing Bd is assembled by press fitting, and thereafter, as shown in FIG.
The ram 5 and the ram 6 bring the converter housing W into a state of being fixedly positioned on the work support 1.

Further, an air cylinder 9 attached to the support structure 2 is arranged at a position near the hydraulic cylinder 3, and a cord supply / winder 10 is attached to a rod portion 9a of the air cylinder 9. . And code supply
The converter housing W of the converter housing W in which the torque wrench 11 is supported and positioned by the work support 1 by the cord 10a extending downward from the winder 10.
It is supported at a position above the through hole portion Pb in b. Therefore, the operation of the air cylinder 9 causes the cord supply / rewinder 10 to be moved up and down together with the torque wrench 11, so that the cord supply / winder 10 takes the raised position and the lowered position together with the torque wrench 11.

The torque wrench 11 takes up the cord 10 a by the cord supply / winder 10 and withdraws the cord 10 a from the cord supply / winder 10 in the lowered position together with the cord supply / winder 10. , Is placed in a state in which it can be moved close to and away from the cord supply / winder 10, and is pulled down so as to be separated from the cord supply / winder 10 which is determined to be in a lowered position by an operator, for example. As shown in FIG. 2, the work support base 1
A bolt Lt for assembling a bearing cover Hb, into which the output shaft of the torque converter is inserted, into a through hole Pb in the converter housing Wb of the converter housing W supported and positioned by the bolt Lt.
Used to tighten t. Therefore, the descending position of the torque wrench 11 is the component mounting position, and the torque wrench 11
With such a lowered position, the bearing cover Hb is assembled to the through hole portion Pb in the converter housing portion Wb of the converter housing W. Through hole P
Assembling the bearing cover Hb with respect to b is, for example,
The tightening of each bolt Lt with the torque wrench 11 is performed by the eight bolts Lt, and is finished in a state where a torque equal to or greater than the preset reference torque Tt acts on the torque wrench 11.

Position sensors 22 and 21 are arranged on the side edge 2a of the side edges 2a and 2b of the support structure 2 that are opposed to each other with the hydraulic cylinder 3 interposed therebetween, and the side edge 2b also includes position sensors 22 and 21.
Position sensors 23 and 24 are arranged. Position sensor 2
When the ram 5 is assumed to be in the raised position, 1 detects the detected portion 5a provided on the ram 5 and uses the detection signal Sa indicating that the ram 5 is in the raised position as the raised position detection signal. On the other hand, when the ram 5 is assumed to be in the lowered position, the position sensor 22 detects the detected portion 5a provided on the ram 5 and outputs a detection signal indicating that the ram 5 is in the lowered position. Sb is sent as a lowered position detection signal. Further, the position sensor 23 is used for the cord supply / winder 1
When 0 is set to the raised position, the cord supply / winder 10 is detected and a detection signal Sc indicating that the torque wrench 11 is in the raised position is sent, while the position sensor 24 is When the supply / winder 10 is set in the lowered position, the cord supply / winder 10 is detected and the detection signal Sb indicating that the torque wrench 11 is in the lowered position is sent.

Further, the torque wrench 11 is provided with a limit switch 25. The limit switch 25 is turned on when the torque wrench 11 is applied with a torque equal to or greater than a preset reference torque Tt, and the torque detection signal Se is detected. Is sent. Therefore, the torque detection signal Se is an assembly end signal indicating the end of the tightening of the bolt Lt by the torque wrench 11 described above.

The support structure 2 is provided with a control unit 20 that controls the operations of the hydraulic cylinders 3 and 4, the oil seal feeder 7, the bearing feeder 8, the air cylinder 9, and the like. The control unit 20 controls the position sensors 21, 22, 22.
Detection signals Sa, Sb, Sc and S from 23 and 24
d and the torque detection signal Se from the limit switch 25, and based on them, the drive control signals Ca, Cb, Cc, Cd and C are selected and in a selected order.
e are formed, and they are supplied to the hydraulic cylinder 3, the hydraulic cylinder 4, the oil seal feeder 7, the bearing feeder 8, and the air cylinder 9, respectively.

Drive control signals Ca, Cb, C by the control unit 20
Based on the supply control of c, Cd and Ce, the hydraulic cylinder 3, the hydraulic cylinder 4, the oil seal feeder 7, the bearing feeder 8 and the air cylinder 9 are operated respectively, and the oil seal as described above is obtained. Supply of the oil seal Os and the differential bearing Bd from the feeder 7 and the bearing feeder 8 to the rams 5 and 6, the press fit of the oil seal Os into the through hole Pa in the differential accommodating portion Wa of the converter housing W by the ram 5, the ram 6 The differential bearing B for the through hole Pa in the differential accommodating portion Wa of the converter housing W by
The press-fitting of d and the position fixing of the converter housing W on the work support 1 by the ram 5 and the ram 6 are performed, and further, the converter of the converter housing W by the torque wrench 11 that is supposed to be operated by the operator. The bolt Lt for assembling the bearing cover Hb to the through hole portion Pb in the housing portion Wb is tightened.

At that time, the control unit 20 first causes the oil seal feeder 7 and the bearing feeder 8 to supply the oil seal Os and the differential bearing Bd to the rams 5 and 6, and then the hydraulic cylinders 3 and 4,
The ram 5 press fits the oil seal Os into the through hole Pa in the differential housing part Wa of the converter housing W, and the ram 6 through hole P in the differential housing part Wa of the converter housing W.
The differential bearing Bd is press-fitted into a in the state where it is confirmed that the torque wrench 11 is in the raised position, and the through hole in the differential accommodating portion Wa of the converter housing W of the rams 5 and 6 after the press-fitting is completed. The separation from the portion Pa is operated so that the torque wrench 11 is operated in a state where it is confirmed that the torque wrench 11 is in the raised position, and the air cylinder 9 is
The state where the torque wrench 11 takes the lowered position is such that the rams 5 and 6 take the lowered position and the raised position, which are the parts assembling positions, respectively, and the rams 5 and 6 are in the through holes Pa in the differential accommodating portion Wa of the converter housing W. After assembling the oil seal Os and the differential bearing Bd by press fitting, the converter housing W is operated so as to be taken under the condition that the converter housing W is fixed on the work support 1. Thereby,
The ram 5 press fits the oil seal Os into the through hole Pa in the differential housing portion Wa of the converter housing W, and the ram 6 through hole Pa in the differential housing portion Wa of the converter housing W.
The differential bearing Bd is press-fitted into the converter housing W by the torque wrench 11 which is supposed to be operated by the operator without the risk of the operator operating the torque wrench 11. Of the through hole portion Pb in the converter accommodating portion Wb
Tightening of the bolt Lt for assembling the bearing cover Hb with respect to the rams 5 and 6 is performed by the through hole Pa in the differential accommodating portion Wa of the converter housing W.
Is performed only when the rams 5 and 6 are close to each other and the converter housing W of the rams 5 and 6 is separated from the through hole portion Pa in the differential housing portion Wa of the converter housing W by the torque wrench 11. This is performed only after the tightening of the bolt Lt for assembling the bearing cover Hb to the through hole portion Pb in the converter housing portion Wb is completed, and thus the safety for the operator who operates the torque wrench 11 is sufficient. Reserved.

The control unit 20 that performs such control is configured by using, for example, a microcomputer, and the microcomputer in such a case has the oil seal feeder 7 and the bearing feeder when the torque wrench 11 is in the raised position. FIG. 3 shows an example of a program executed when controlling the operation of the hydraulic cylinders 3 and 4 and the air cylinder 9 after the oil seal Os and the differential bearing Bd are supplied to the rams 5 and 6 from 8. This will be described with reference to the flowchart.

In the program represented by the flowchart of FIG. 3, after the start, in the process 31, the drive control signals Ca and Cb are sent to the hydraulic cylinders 3 and 4, respectively. As a result, the hydraulic cylinders 3 and 4 are operated so that the ram 5 is lowered and the ram 6 is raised. Next, in decision 32,
Depending on whether or not the detection signal Sb is obtained, the ram 5 press-fits the oil seal Os into the through hole Pa in the differential housing portion Wa of the converter housing W, and the ram 6 transmits the oil in the differential housing portion Wa of the converter housing W. It is determined whether or not the press-fitting of the differential bearing Bd into the hole Pa is completed. As a result, when the press fit of the oil seal Os and the press fit of the differential bearing Bd are not completed, the process returns to the process 31.

Then, in the decision 32, the oil seal Os
When it is determined that the press-fitting of No. 2 and the press-fitting of the differential bearing Bd are completed, the drive control signal Ce is sent to the air cylinder 9 in process 33. As a result, the air cylinder 9 is operated and the cord supply / winder 10 is lowered together with the torque wrench 11. Subsequently, in the decision 34, the torque wrench 11 is determined depending on whether or not the detection signal Sd is obtained.
It is determined whether or not is in the lowered position. As a result, when the torque wrench 11 is not in the lowered position,
Return to process 33. When it is determined in the decision 34 that the torque wrench 11 is in the lowered position, in the process 35, the torque detection signal S
Then, the completion of tightening of the bolt Lt, which is performed by using the torque wrench 11, is detected, and in the subsequent decision 36, based on the number of times the torque detection signal Se is taken in, all of the eight bolts Lt are detected. Determine if the tightening is complete. As a result, if the tightening of all the eight bolts Lt is not completed, the process returns to the process 35.

When the decision 36 determines that the tightening of all the eight bolts Lt is completed, the process 37
In, the drive control signal Ce is sent to the air cylinder 9 as having a polarity different from that of the process 33. As a result, the air cylinder 9 is operated, and the cord supply / winder 10 is raised together with the torque wrench 11. Subsequently, in the decision 38, it is determined whether or not the torque wrench 11 is in the raised position depending on whether or not the detection signal Sc is obtained. As a result, if the torque wrench 11 is not in the raised position, the process returns to process 37.

When it is determined in the decision 38 that the torque wrench 11 is in the raised position, in the process 39, the drive control signals Ca and Cb are set in the process 3 respectively.
It is sent to the hydraulic cylinders 3 and 4 as having a polarity different from the case of 1. As a result, the hydraulic cylinder 3
And 4 are actuated, the ram 5 is raised and the ram 6 is lowered. Next, in the decision 40, it is determined whether or not the ram 5 is in the raised position and the ram 6 is in the lowered position, depending on whether or not the detection signal Sa is obtained. As a result, ram 5
Is in the raised position and the ram 6 is not intended to be in the lowered position, the process returns to process 39. Then, as a result of the judgment in the decision 40, when the ram 5 is in the raised position and the ram 6 is in the lowered position, the operation is stopped in the process 41 and the control is ended.

In the above example, the differential bearing Bd and the oil seal Os to the through hole portion Pa formed in the differential housing portion Wa of the converter housing W.
Is used for press-fitting and for assembling the bearing cover Hb to the through hole Pb formed in the converter housing Wb of the converter housing W by bolting. The device is not limited to such an example, but can be widely applied when various members are press-fitted into various members and assembled by other mounting modes.

(Effects of the Invention) As is apparent from the above description, the component assembling apparatus according to the present invention includes the movable press-fitting means and the other component assembling means, is relatively simple, and has a relatively low installation cost. With the configuration that can be suppressed, the work such as the constituent members of the power transmission mechanism mounted on the vehicle can be assembled by press fitting a plurality of parts and tightening the bolts while the work is fixed. In addition, this avoids a situation in which a component is not assembled with the work.

Further, when the plurality of parts are press-fitted into the work and assembled by bolting or the like, one of the plurality of parts is press-fitted into the work by the movable press-fitting means.
The part assembling means does not operate so as to assemble other ones of the plurality of parts to the work, and the operation for assembling the parts to the work is performed by the movable press fitting. Is performed only when the means is in the component press-fitting position for fixing the work on the work support base after the assembly is performed by press-fitting the components to the work, and further, the separation of the movable press-fitting means from the work is performed. This is performed only after the assembling of the parts to the work by the assembling means is completed, and as a result, for example, the safety for the operator who operates the parts assembling means is sufficiently ensured.

[Brief description of drawings]

FIG. 1 is a block diagram generally showing an example of a parts assembling apparatus according to the present invention, and FIG. 2 is a part of the example shown in FIG. 1 and a work to be parts-assembled by the example. FIG. 3 is a block diagram showing the parts to be assembled to the work, FIG.
6 is a flowchart showing an example of a program executed by a microcomputer that constitutes a control unit used in the example shown in the figure. In the figure, 1 is a work support, 3 and 4 are hydraulic cylinders, 5
Reference numerals 6 and 6 are rams, 9 is an air cylinder, 11 is a torque wrench, 20 is a control unit, 21, 22, 23 and 24 are position sensors, 25 is a limit switch, Bd is a differential bearing, Os is an oil seal, and Lt is a bolt. , W is a converter housing, Wa is a differential housing portion, and Wb is a converter housing portion.

Claims (1)

[Scope of utility model registration request] 1. A work support base for supporting a work on which at least first and second parts are to be assembled, and a work support base for press-fitting the first part onto the work, and thereafter the work is mounted on the work support base. The component press-fitting position for fixing the upper position is taken, and the movable press-fitting means is assumed to send out a position detection signal when in the component press-fitting position; A component assembling means that is operated to assemble the second component, and an assembly end signal is transmitted after the assembly of the second component is completed; and the component to the movable press-fitting means. The first press-fitting position is set, the first press-fitting part is assembled, and it is confirmed that the movable press-fitting means is in the press-fitting position based on the position detection signal. Control means for causing the attaching means to set the component assembling position so as to assemble the second component, and then performing control for separating the movable press-fitting means from the work in response to the assembling end signal. And a parts assembling device configured to include.