KR20190036395A - Nut runner, and camcap assembly device having the same and replacement method of the same - Google Patents

Abstract

The present invention relates to a nut runner, which may comprise: a socket unit provided with a socket installed to be rotated by an external driving force source, and a first frame on which the socket is mounted; and a fastening unit provided with a connector assembled to and separated from the socket, a second frame of which one side is provided with the connector, a fastener mounted on the other side of the second frame, and a rotation delivering shaft installed to deliver rotation of the connector to the fastener by connecting the connector to the fastener.

Description

[0001] The present invention relates to a nut runner, a cam cap assembly including the same, and a method of replacing the same.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nut runner, and more particularly, to a nut runner, in which a fastening unit is manufactured for each type according to a fastening position of a different cam cap according to a type of a cylinder head, And a cam cap assembly including the same, and a method for replacing the same.

Generally, a cylinder head of an engine is provided with a pair of cam shafts and is configured to be interlocked with a crankshaft by a chain or a belt. At this time, a cam having a phase angle different according to each cylinder is formed in the camshaft, so that the intake valve and the exhaust valve are opened / closed at regular intervals.

Here, the camshaft can be fixed to the cylinder head by the cam carrier and the cam cap. At this time, the cam carrier is mounted on the upper portion of the cylinder head with a plurality of bolts, and can be formed in a substantially rectangular shape similar to the upper surface of the cylinder head.

1, the cam carrier 10 includes a center frame 11, a side frame 12 arranged parallel to both sides of the center frame 11, and a plurality of side frames 12 arranged between the center frame 11 and the side frames 12. [ And the camshaft journal 13 processed for each interval can be provided. Here, the camshaft 13 can be firmly fixed by the cam cap 20 and the bolt in a state where the camshaft is placed on the journal 13.

The cam carrier 10 can be formed into various shapes according to the type of the cylinder, the type of the valve, the position of the cam of the camshaft, and the like. Thus, the fastening position of the cam cap and the fastening position of the bolt can be arranged differently. For example, the types of cylinders may include A-HEAD (24 axes), R-HEAD (20 axes), U2-3 cylinders (18 axes), U2-4 cylinders (24 axes) The type of the cylinder head and the cam carrier 10 may be different depending on the type. Further, the position and number of fastening of the cam cap 20 are different depending on the type of the cam carrier 10, so that the position and number of the fastening holes processed in the cam carrier 10 may be different.

On the other hand, the cam cap assembling device may include a robot arm and a nut runner.

The robot arm may be installed to hold the cam cap 20 conveyed by the conveyor in a state where the cam carrier 10 is placed on the cylinder head, and to place the cam cap 20 at the fastening position of the cam carrier 10.

The nut runner may be installed to rotate the bolt with the socket with the cam cap 20 on the cam carrier 10 to fasten the cam cap 20 to the cam carrier 10. Here, the socket may be installed to be rotated by an external power source. This nut runner can be made to fix one and change the position of the socket depending on the position of the bolt.

However, depending on the type of the cylinder, the cam carrier 10 and the cam cap 20 are also changed. In addition, the fastening position of the bolt can be changed and the socket position of the nut runner can be changed in accordance with the position of the bolt. In order to change the position of such a socket, a long time of manual work is required by a skilled worker, and the preparation time between processes due to the cylinder change is prolonged, leading to a problem that the continuity of the process is lowered and productivity is lowered.

Korean Registered Patent No. 10-1518879 (Announced 2015.05.15) Korean Registered Patent No. 10-1611085 (Announced 2014.04.11) Korean Registered Patent No. 10-1766057 (Announced 2017.08.07)

In order to solve the above-described problems, an object of the present invention is to manufacture a large number of fastening units for each type of cylinder, and to fasten the bolts by replacing the fastening units with sockets, And a nut runner for maximizing productivity.

The present invention also provides a method for assembling a cam cap assembly and a nut runner including a nut runner that can replace a current fastening unit with a corresponding fastening unit when a cylinder type is changed in a cam cap assembling apparatus including a nut runner .

In order to accomplish the above object, a nut runner according to the present invention includes: a socket installed to be rotated from an external power source; a socket unit having a first frame mounted with a socket; A second frame having a connector on one side thereof, a fastener mounted on the other side of the second frame, and a rotation transmission shaft connected to the connector and the fastener so as to transmit the rotation of the connector to the fastener, And a fastening unit.

At this time, the connector is integrated into the socket, the rotation of the socket is transmitted to the connector, the rotation transmission shaft and the fastener, and the fastener can rotate the bolt.

The rotation transmission shaft may have a first joint mounted on one side for fastening with the connector and a second joint mounted on the other side for fastening with the fastener.

Therefore, when the position of the connector and the fastener is deviated from the vertical line on the front face, the rotation transmitting shaft is arranged obliquely via the first joint and the second joint, and the rotation of the connector causes the first joint, And can then be delivered to the fastener.

Also, the first joint and the second joint may be a joint that transmits a rotation including a universal joint.

The first fastening block mounted on the first frame and the second fastening block mounted on the second frame are further provided. The first fastening block and the second fastening block join together and guide along the entrance path Can be moved and fastened to the socket.

The first frame includes at least one of a first upper frame equipped with a socket, a second lower frame positioned at the lower side, and a first intermediate frame connected to the first upper frame and the first lower frame, The first fastening block may be mounted on the upper frame, the first intermediate frame, or the first lower frame.

The second frame includes a second upper frame mounted with a connector, a second lower frame mounted on the lower side with a fastener, and a second intermediate frame connected with the second upper frame and the second lower frame And the second fastening block may be mounted on the second upper frame, the second intermediate frame, or the second lower frame.

The nut runner may further include a joint holding means for holding the positions of the first frame and the second frame so that the first and second fastening blocks are combined.

According to another aspect of the present invention, there is provided a cam cap assembling apparatus having a nut runner, the cam cap assembling apparatus comprising: a fastening part having a cylinder assembly, a cylinder head and a cylinder assembly assembled with the cam carrier; A transfer conveyor installed to transfer a cam cap pallet on which the cam cap is placed; A robot arm holding the cam cap and placed on the cam carrier; And the nut runner of the present invention, which is installed to rotate the bolt of the cam cap to fasten the cam cap to the cam carrier.

In addition, the first frame of the nut runner includes a first upper frame on which the first fastening block is mounted, a second lower frame located on the lower side of the first upper frame, and a second upper frame on which the first fastening block is mounted, And a first intermediate frame provided by the first intermediate frame.

The second frame of the nut runner includes a second upper frame mounted with a connector, a second lower frame mounted on the lower side of the second upper frame and equipped with a fastener, and a second upper frame and a second lower frame And a second intermediate frame installed thereon.

And a joint holding means for fixing the positions of the first frame and the second frame so that the socket unit and the fastening unit are maintained in a combined state.

Also, when the second frame rises or falls with respect to the first frame, the first fastening block and the second fastening block may be combined or separated, and the socket and the fastening portion may be fastened or unfastened.

When the socket and the connector are coupled, the rotation of the socket is transmitted to the connector, the first joint, the rotation connecting shaft, the second joint and the fastener, and the fastener can rotate the bolt to fasten the cam cap to the cam carrier.

Meanwhile, in the above-described method of replacing the fastening unit of the nut runner in the cam cap assembling apparatus according to the present invention, when the robot arm supports the fastening unit, the coalescing holding means is operated so that the first fastening block and the second fastening block (S10) in which the fastening unit is separated from the socket unit while being separated from the socket unit; A twentieth step S20 in which the robot arm transports the current fastening unit to the loading part and places it down, grasps the fastening unit corresponding to the changed cylinder assembly, and conveys it to the fastening part; (S30) of raising the fastening unit to fasten the fastening unit to the socket unit (S30); and a forty-second step (S40) of holding the fastening unit in a state where the fastening unit is held by the fastening unit and fastened to the socket unit can do.

In step 30, the second fastening block is assembled to the first fastening block, and the socket and the fastening part are fastened together.

As described above, according to the present invention, when the cylinder is changed, the nut runner is assembled with the socket unit and the fastening unit, and the fastening unit is manufactured in accordance with the fastening position of the cam cap which is changed according to the type of the cylinder. The assembling process is started by changing to the fastening unit, thereby reducing the downtime between the assembling processes and improving the continuity and productivity of the work.

When the position of the connector and the fastener is deviated from the vertical line on the front surface of the fastening unit, the rotation transmitting shaft is inclined via the first joint and the second joint so that the rotation of the fastener arranged in accordance with the socket is stopped at the fastening position There is an effect that it can be smoothly transmitted to the fastening holes arranged in alignment.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, Should not be interpreted.
1 is a perspective view schematically showing a conventional cam carrier and a cam cap.
2 is a front view schematically showing a main part of a nut runner according to a preferred embodiment of the present invention.
3 is a front view showing the socket unit shown in Fig.
4 and 5 are front views showing an embodiment of the fastening unit shown in Fig.
FIG. 6 is a plan view schematically showing a cam cap assembling apparatus provided with the nut runner of FIG. 2. FIG.
7 is a flowchart showing a method of replacing a fastening unit of a nut runner using the cam cap assembling apparatus of FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

<Nutrunner>

The nut runner 100 according to the preferred embodiment of the present invention includes a socket unit 110 and a fastening unit 120, as shown in FIG. Here, the lifting and lowering fastening unit 120 may be installed to be coupled to or separated from the fixed socket unit 110. Hereinafter, the nut runner 100 can be replaced with a conventional nut runner, and a description will be made by taking as an example a case where the cam cap (20 in Fig. 1) is fixed to the cylinder head for the sake of understanding.

First, the socket unit 110 is fixed and can be made to rotate the socket 112 by an external power source (not shown). The socket unit 110 includes a first frame 111, a socket 112, and a first fastening block 113.

The first frame 111 can be installed such that a plurality of sockets 112 are mounted side by side on the front side and a first fastening block 113 is mounted on both sides. 1 and 2, the first frame 111 includes a first upper frame 111a and a first lower frame 111b that are flat in plan view, a first upper frame 111a and a second upper frame 111b on the front side, And a first intermediate frame 111c which is connected to the first and second lower frames 111b and 112c.

Here, a plurality of sockets 112 may be mounted on the first upper frame 111a so as to match the openings and / or the heat. At this time, the socket 112 may be substantially granular and the lower portion may be firmly fixed through the first upper frame 111a.

In addition, the first lower frame 111b may have a plate shape, and may be manufactured to have a hole through which the second frame 121, which will be described later, passes and ascends and descends. As another example, the first lower frame 111b may be manufactured by fastening a plurality of bars to each other so that the second frame 121 passes.

The first intermediate frame 111c is in the form of a plate and is disposed in front of and behind the front face. At least one plate of the front and back plates has a connecting hole 122 mounted on the second frame 121, To be connected to the socket 112 can be visually checked. As another example, the first intermediate frame 111c may be formed in a substantially rectangular shape in a plane, and at least one hole may be machined on at least one side to reduce the weight.

The socket 112 may be mounted in the form of a pellet by aligning a plurality of openings in the first upper frame 111a of the first frame 111. [ The socket 112 is installed to rotate by an external power source (not shown), and can be installed to provide the rotation to the connection hole 122 mounted at the bottom. The gap between these sockets 112 may vary depending on the fastening position of the cam cap or the like.

The first fastening block 113 may be mounted on the first frame 111 such that the second fastening block 125 attached to the second frame 121 is engaged or disengaged. The first fastening block 113 may be mounted on both sides of the first frame 111. The first fastening block 113 is provided with a protrusion on the upper side of the second fastening block 125 to be inserted into the first fastening block 113 and fastened to the first fastening block 113. [ Grooves can be machined. These grooves and projections have a predetermined length and the second frame 121 rises along the correct entry path with respect to the first frame 111 while the projections are received in the grooves, Can be achieved in the correct position.

Meanwhile, the fastening unit 120 may be fastened to or separated from the socket unit 110, and a plurality of fastening units 120 may be manufactured according to the type of the cylinder, that is, the fastening position of the cam cap. These fastening units 120 can be manufactured in many manners in accordance with the change in the position of the fastening tool 123 and the change in the installation angle of the rotation transmission shaft 124 provided by connecting the fastening tool 123 and the fastening tool 122. 2 and 4, the fastening unit 120 includes a second frame 121, a connector 122, a fastener 123, a rotation transmission shaft 124, and a second fastening block 125 can do.

The second frame 121 can be manufactured to be accommodated in the first frame 111 while being raised. The second frame 121 includes a second upper frame 121a and a second lower frame 121b and a second intermediate frame 121b connecting and securing the second upper frame 121a and the second lower frame 121b. 121c.

Here, the second upper frame 121a may have a substantially plate shape in a plan view, and a plurality of connection holes 122 may be installed in alignment with heat and / or heat. In addition, the second upper frame 121a may be provided with a plurality of bars, and the connecting holes 122 may be provided in these bars.

In addition, the second lower frame 121b is substantially plate-like in plan view, and a plurality of fasteners 123 can be installed in alignment with heat and / or heat. In addition, the second lower frame 121b may be provided with a plurality of bars, and fasteners 123 may be provided in these bars.

The second intermediate frame 121c is installed to connect the second upper frame 121a and the second lower frame 121b and may be made of a plate member similar or identical to the first intermediate frame 111c And a plurality of bars may be provided as shown in FIG.

The connector 122 is a member that is coupled to the socket 112 and transmits the rotation of the socket 112 to the rotation transmission shaft 124. A plurality of connectors 122 may be installed to match the heat and / or heat to the second upper frame 121a. The upper portion of the connector 122 may be formed to be coupled to the lower portion of the socket 112 when the second frame 121 rises and to be separated from the lower portion of the socket 112 when the second frame 121 descends . At this time, in a state where the connector 122 and the socket 112 are engaged, the connector 122 is installed to transmit the rotation of the socket 112 to the rotation transmission shaft 124, and a detailed description thereof will be described later.

The fastening tool 123 is a member to which a bolt (or a nut, hereinafter collectively referred to as a bolt) for fastening the cam cap is coupled and rotates the bolt. The fastening openings 123 may be arranged in a plurality of openings and / or columns in the second lower frame 121b in accordance with the position and number of the bolts, and the upper or lower portion may be fixed to the second upper frame 121a. For this reason, the fastener 123 may be positioned on the vertical line with the front-side connector 122, or may be located off the vertical line. The fastening tool 123 can rotate the bolt by the rotation transmitted through the rotation transmission shaft 124, and a detailed description thereof will be described later.

The rotation transmission shaft 124 is a member that connects the coupling hole 122 and the coupling hole 123 and transmits the rotation of the coupling hole 122 to the coupling hole 123. 4 or 5, when the position of the coupling hole 122 to be coupled with the socket 112 and the coupling hole 123 to be coupled with the bolt of the cam cap is deviated from the vertical line on the front face, An upper joint 124a and a lower joint 124b may be further provided on the upper and lower sides of the rotation transmitting shaft 124 to transmit the lower joint 124 to the fastener 123. [

The upper part of the rotation transmission shaft 124 is fastened to the connection hole 122 via the upper joint 124a and the lower part of the rotation transmission shaft 124 is fastened to the fastening hole 124b through the lower joint 124b. (Not shown). The upper joint 124a may be constructed and installed so as to transmit the rotation of the connection port 122 to the rotation transmission shaft 124 and the lower joint 124b may transmit the rotation of the rotation transmission shaft 124 to the fastener 123 As shown in FIG. The upper joint 124a or the lower joint 124b may be, for example, a universal joint. Therefore, even if the connecting hole 122 and the fastening hole 123 are offset from the vertical line on the front surface and the rotation transmitting shaft 124 is inclined, the rotation of the connecting hole 122 is transmitted to the upper joint 124a, And can be transmitted to the fastening member 123 through the joint 124b. The upper joint 124a or the lower joint 124b is excluded and the rotation transmitting shaft 124 is connected to the connecting hole 122 and the fastening hole 123. [ 123, respectively.

The second fastening block 125 is a member that guides the connector 122 to be mounted on the socket 112 at an accurate position while being incorporated into the first fastening block 113. The second fastening block 125 may be mounted on the second frame 121 so as to be combined with the first fastening block 113. For example, on both sides of the second upper frame 121a. The second fastening block 125 is moved upward together with the second frame 121 to precisely guide the entry path of the connecting hole 122 to be fastened to the socket 112 while being joined to the first fastening block 113 Can be installed.

The nut runner 100 may further include coalescing means for cooperating with the first fastening block 113 and the second fastening block 125. For example, the coalescing holding means may be mounted on or near the first frame 111, and the second frame 121 may be supported with the first fastening block 113 and the second fastening block 125 assembled together The coalescing means may include a power source including a cylinder, a motor, and the like.

<Camcap Assembly Device>

As described above, a plurality of nut runners 100 manufactured according to the present invention are provided. A cylinder head according to the type of cylinder and a cylinder head according to the type of the cylinder and a change- The cam cap assembling apparatus adapted to be replaced by the runner 100 will be described in detail.

As shown in FIG. 6, the cam cap assembling device according to the present invention includes a conveying conveyor 200, a fastening part 300, a loading part 400, and a robot arm 500.

The transfer conveyor 200 may be installed to transfer the cam cap pallet on which the cam cap is placed from the place where the cam cap is mounted to the vicinity of the robot arm 500. This conveying conveyor 200 can be installed to convey the cam cap pallets more than one row.

The fastening portion 300 may be placed in a cylinder assembly C in which the cylinder, the cylinder head, and the cam carrier are assembled. The fastening part 300 may be provided with a nut runner 100 to which the socket unit 110 and the fastening unit 120 are fastened. Accordingly, when the cam cap is placed on the cam carrier in the fastening part 300, the nut runner 100 may be rotated to rotate the bolt to assemble the cam cap into the cam carrier.

The loading unit 400 may be provided with a plurality of fastening units 120 of the nut runner 100 manufactured according to the fastening position of the cam cap different for each cylinder assembly C depending on the type of the cylinder. At this time, fastening units 120 manufactured for each type of cylinder are placed in the loading unit 400, and the robot arm 500 can be stacked so that any one fastening unit 120 can be gripped and carried.

The robot arm 500 may be installed to grip the cam cap from the cam cap pallet conveyed by the conveying conveyor 200 and to place the cam cap on the cam carrier of the fastening part 300. At this time, the robot arm 500 can carry the bolt inserted in the cam cap together with the cam cap. The robot arm 500 grasps the fastening unit 120 of the fastening part 300 and transfers the fastening unit 120 to the loading part 400 and grasps the other fastening unit 120 of the loading part 400, To the socket unit 110 of the receptacle 110. [

<How to replace the fastening unit>

In the following, when the type of the cylinder is changed during the assembling process, a new cylinder, a cylinder head, and a cylinder assembly C in which the cam carrier is assembled are replaced in the fastening part 300, and a new cam cap is inserted between the cam cap pallet and the conveying conveyor 200 Lt; / RTI &gt; The robot arm 500 is transferred to the loading unit 400 and the new fastening unit 120 is transferred to the socket unit 110 by the fastening unit 120 separated from the socket unit 110 of the nut runner 100 So that it can be fastened. This will be described in more detail with reference to FIG.

First, the robot arm 500 holds the fastening unit 120 fastened to the socket unit 110 and the fastening unit releases the fastening unit 120 and the fastening unit 120 (S10). At this time, the cooperative holding means is operated to separate the fastening unit 120 from the socket unit 110, and the separated fastening unit 120 is moved downward by being placed on the robot arm 500 and completely separated from the socket unit 110 do.

Next, the robot arm 500 transports the current fastening unit 120 to the loading unit 400 and places it down, grasps the other fastening unit 120 corresponding to the replaced cylinder assembly C, (S20). At this time, the robot arm 500 can grip the second frame 121 of the fastening unit 120.

Next, the robot arm 500 lifts the fastening unit 120 and fastens it to the socket unit 110 (S30). At this time, the second fastening block 125 is combined with the first fastening block 113, and the connecting hole 122 is fastened to the socket 112.

Finally, the coalescing holding means operates so as to maintain the fastening of the fastening unit 120 and the socket unit 110 (S40). For example, the coalescing holding means can support the fastening unit 120 and the socket unit 110 by holding the fastening unit 120 upright and sticking to its current position.

As described above, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the appended claims, rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and equivalents of the claims are to be construed as being included within the scope of the present invention do.

100: Nutrunner 110: Socket unit
111: first frame 111a: first upper frame
111b: first lower frame 111c: first intermediate frame
112: socket 113: first fastening block
120: fastening unit 121: second frame
121a: second upper frame 121b: second lower frame
121c: second intermediate frame 122: connector
123: fastener 124: rotation transmission shaft
124a: Upper joint 124b: Lower joint
125: second fastening block
200: conveying conveyor 300: fastening part
400: loading part 500: robot arm
C: Assembly.

Claims (10)

A socket 112 installed to be rotated from an external power source, a socket unit 110 having a first frame 111 on which a socket 112 is mounted;
A second frame 121 on one side of which the connector 122 is mounted, a fastener 123 mounted on the other side of the second frame 121, And a coupling unit 120 having a rotation transmitting shaft 124 connected to the coupling member 123 to transmit the rotation of the coupling member 122 to the coupling member 123,
The connection port 122 is incorporated into the socket 112 and the rotation of the socket 112 is transmitted to the connection port 122, the rotation transmission shaft 124 and the connection port 123, and the connection port 123 connects the bolt A nut runner configured to rotate.
The method of claim 1,
The rotation transmitting shaft 124 has an upper joint 124a mounted on one side for fastening with the coupling 122 and a lower joint 124b mounted on the other side for fastening the fastener 123 ,
The rotation transmitting shaft 124 is disposed obliquely via the upper joint 124a and the lower joint 124b and the connection hole 122 Is transmitted to the fastening member 123 along the upper joint 124a, the rotation transmitting shaft 124 and the lower joint 124b.
3. The method of claim 2,
Wherein the upper joint (124a) and the lower joint (124b) include a universal joint and are rotatable joints.
4. The method according to any one of claims 1 to 3,
A first fastening block 113 mounted on the first frame 111 and a second fastening block 125 mounted on the second frame 121,
And the connecting hole 122 is moved along the entering path along which the first fastening block 113 and the second fastening block 125 coalesce together and is fastened to the socket 112. [
5. The method of claim 4,
The first frame 111 includes a first upper frame 111a on which the socket 112 is mounted and a second lower frame 121b on the lower side and a first upper frame 111a and a first lower frame 111b, And a first intermediate frame 111c connected to the first intermediate frame 111c,
Wherein the first fastening block (113) is mounted on the first upper frame (111a), the first intermediate frame (111c) or the first lower frame (111b).
5. The method of claim 4,
The second frame 121 includes a second upper frame 121a on which the connector 122 is mounted, a second lower frame 121b on the lower side where the fastener 123 is mounted, and a second upper frame 121a And a second intermediate frame 121c connected to the second lower frame 121b,
And a second fastening block 125 is mounted on the second upper frame 121a, the second intermediate frame 121c, or the second lower frame 121b.
5. The method of claim 4,
And coalescing means for fixing the positions of the first frame 111 and the second frame 121 so as to keep the first and second fastening blocks 113 and 125 coalesced Nutrunners made.
In the cam cam assembly,
A cylinder assembly (C) of a cylinder body, a cylinder head and a cam carrier;
A transfer conveyor 200 installed to transfer a cam cap pallet on which a cam cap is placed;
A robot arm 500 configured to grip the cam cap and to be placed on the cam carrier;
And a nut runner (100) according to any one of claims 1 to 3, which is installed to rotate the bolts of the cam caps to fasten the cam caps to the cam carriers.
8. The method of claim 7,
The first frame 111 of the nut runner 100 includes a first upper frame 111a on which the first fastening block 113 is mounted and a second upper frame 111b on the lower side of the first upper frame 111a, And a first intermediate frame 111c connected to the second lower frame 121b and the first upper frame 111a and the first lower frame 111b,
The second frame 121 of the nut runner 100 includes a second upper frame 121a on which the connector 122 is mounted and a second frame 121b on the lower side of the second upper frame 121a, 2 lower frame 121b and a second intermediate frame 121c connected to the second upper frame 121a and the second lower frame 121b,
The first frame 111 and the second frame 121 are fixed so that the socket unit 110 and the fastening unit 120 are maintained in a combined state,
When the second frame 121 is raised or lowered with respect to the first frame 111, the first and second fastening blocks 113 and 125 are combined or separated, Is fastened or unfastened,
When the socket 112 and the coupling 122 are fastened together, the rotation of the socket 112 causes the coupling 122, the upper joint 124a, the rotation transmission shaft 124, the lower joint 124b, , And the fastening tool (123) rotates the bolt to fasten the cam cap to the cam carrier.
In the method of replacing the fastening unit 120 by changing the type of the cylinder in the cam cap assembling apparatus of claim 9,
When the robot arm 500 supports the fastening unit 120, the cooperative holding means operates to disconnect the first fastening block 113 and the second fastening block 125 from the socket unit 110, (S10);
The robot arm 500 transports the current fastening unit 120 to the loading unit 400 and places it down so that the robot arm 500 grips the fastening unit 120 corresponding to the changed cylinder assembly C and conveys the fastening unit 120 to the fastening unit 300 Step 20 (S20);
A thirtieth step S30 of raising the fastening unit 120 to fasten the robot arm 500 to the socket unit 110;
(S40) of holding the fastening unit 120 in a state where the fastening unit is held by the fastening unit and fastened to the socket unit 110,
The second fastening block 125 is assembled to the first fastening block 113 and the socket 112 and the connecting hole 122 are fastened together in the 30th step S30. How to replace.

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