JPS6328530A - Crankshaft assembling device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application J) The present invention relates primarily to an assembly device for fully automatically assembling a crankshaft to a connecting rod of a vehicle engine.

(Prior art j) The applicant of the present application previously disclosed in Application No. 4 Sho 60-232346 a cylinder/double block kB in which a piston with a connecting rod is inserted into the upper part of the machine frame 1!II, so that the connecting rod can be freely positioned in a hanging state. a setting table, and a lifting table provided below the machine frame to raise and lower a setting jig to be placed under the setting table, and a crankshaft and a connecting rod cap can be freely set on the setting jig, By raising the setting jig, the large end of the connecting rod is brought into contact with the pin part of the shaft 7, and the connecting rod bolt at the large end is inserted into the gel hole of the connecting rod cap, and the nut 1 is inserted into the bolt. We proposed a crankshaft assembly device that tightens using a nut runner mounted on a setting jig.

(Problem to be Solved by the Invention) By the way, since the piston and connecting rod are assembled so that there is a relatively large play in the axial direction of the piston bin, this is installed in the cylinder block so that the center line of the connecting rod in the hanging direction is aligned with the piston. Even if it is inserted with the axis aligned,
When transporting the cylinder block to the crankshaft assembly station, the connecting rod may shift in the axial direction of the piston pin. When making contact, there is a risk of scratching the metal at the large end.

In addition, if the ninth setting jig, in which a nut runner is mounted on the setting jig, tends to be complicated and large, and if multiple setting jigs are prepared and fed in alternately, it is necessary to install a nut runner on each setting jig. However, it is an object of the present invention to provide a device that solves all of these problems.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a set in which a cylinder block in which a piston with a connecting rod is inserted into the upper part of the machine frame can be freely positioned with the connecting rod hanging down. A platform is provided below the machine frame, and an elevating platform for raising and lowering a setting jig that is placed under the setting table, and a crankshaft and a connecting rod camp can be freely set on the setting jig. By raising the jig, the large end of the connecting rod is brought into contact with the pin portion of the crankshaft, and the connecting rod bolt of the large end is inserted into the dart hole of the connecting rod cap, and a nut is tightened thereon. In the crankshaft assembly device, a positioning means is provided in the machine frame to move the connecting rod in the axial direction of the piston pin so that the center line in the hanging direction of the connecting rod coincides with the axis of the piston 7, and The tool has a socket at its tip that can be freely set, and a nut runner that can be connected to the socket via a mounting plate that can be moved up and down in conjunction with the lifting platform and can be moved up and down with respect to the lifting table. It is characterized by having been established.

(Function) The connecting rod is moved to its axial center with respect to the piston pin by the alignment means, and the posture of the connecting rod is fixed by its own weight, and the center line of the connecting rod is aligned with the axis of the piston. , the large end of the connecting rod can be accurately brought into contact with the pin portion of the crankshaft without damaging the metal.

Father, the setting jig is equipped with only a socket that can be freely set at the tip, and the lifting platform that raises and lowers the setting jig is equipped with a nut runner that can be freely connected to the socket, which simplifies the setting jig. It can be obtained relatively compactly, and when a plurality of setting jigs are prepared, it is sufficient to prepare one nut runner for each setting jig, and the apparatus can be obtained at a relatively low cost.

(Implementation row) The drawing shows that a piston pin with a connecting rod is inserted in advance into each cylinder inside the cylinder block of an in-line 4-cylinder engine, and the piston pin is transported to a predetermined assembly station to assemble the crankshaft D. fc 1 and 2, (1) is a roller conveyor that conveys the cylinder block Dt in the front-rear direction, (2) is a machine frame installed at the assembly station, and (3) is a The set table (4) is a lifting platform provided on the lower side of the machine frame (2), and the set table (3) is installed on the machine frame (2). It is slidably attached to a vertical rail (5) so that it can be moved up and down by the operation of a cylinder (6), and when the set table (3) is raised, the set table (3) is moved up and conveyed by the roller conveyor (1). Cylinder block Ai work receiver (
The lifting platform (4) is supported by a force and lifted slightly from the conveyor (1) so that it can be positioned with each connecting rod B hanging down.
8) and is slidably attached to the nuclear machine frame (2).
c″4 rod (9) to the nut sleeve (4) of the lifting platform (4).
a), and a motor (911) that drives the screw (911) to rotate.
The elevating table (4) was made to be able to move up and down by lα.

Then, the setting jig Uυ placed under the setting table (3) is moved up and down by the movement of the lifting table (4), and the crankshaft D and connecting rod cap E are placed on the core setting jig αυ.
and by raising the setting jig αυ, the pin part Gi of the crankshaft D is brought into contact with the large end F of the connecting rod B, and the connecting rod bolt H of the large core end F is inserted into the bolt hole of the connecting rod cap E. I inserted it and tightened the nut.

More specifically, the above setting jig (10 includes a pallet (17J) with a chamfer gKK of one end of the crankshaft D [together with the crankshaft D two times, as shown in FIGS. 6 to 8) A support tool (131) that supports the shaft and a support tool 04 that supports the other end are provided so as to be biased upward by heating, and the crankshaft Di can be freely set on these supports (13) α. In addition, a plurality of the pallets (sockets with a nut-free socket at the tip of 17J) Q61 are provided with each spring biased upward with a force of 11 as shown in FIG. 3, and the tip of each socket flE9 is nibin (
1 Uwo spring (18) protrudes downwardly against the
Each bolt hole of the connecting rod cap GL is connected to each bolt hole (
1 (to) was fully inserted so that the tip of each socket +1 (to) could be freely positioned and held.

Moreover, as shown in FIG. 3 above the lifting platform (4), there is a positioning bin Q that can freely move upwards and retracts! l! A plurality of these positioning bins C1'l are provided, and the lifting platform (4) is brought into contact with it.
The roller conveyor placed on the side of this (12aJ
Insert the tip of each pin 0 into the setting jig Ql)'(
i-Positioning is now possible.

Further, a mounting plate 121)k is provided directly below the lifting platform (4) so as to be movable up and down along a rail (not shown) vertically installed on the machine frame (2), and a setting jig (lυ) is attached to the mounting plate Cυ. Each socket (161 drive shaft (recessed part < 22 m at the tip that can be freely connected to and detached from 16aJ) has a nut runner (2'2J), which is fully vertically installed, and the piston rod of a rotary drum cylinder connected to the mounting plate Cυ. is attached to the elevating table (4), and the mounting plate CD is given an elevating movement relative to the elevating table (4) by the operation of the cylinder C23, and a movement linked to the elevating and lowering movement of the elevating table (4). I did it like that.

In the illustrated example, as shown in FIGS. 4 and 5, a first slider 1241 is provided on the mounting plate tat+ and is movable along a longitudinal rail (24a) fixed thereto.
A plurality of second sliders (4) are inserted into a longitudinally elongated guide bar (25a) fixed to each of the sliders, and each of the nut runner nanos is attached to each of the six second sliders (14). to each of the first and second sliders t, 7411
25i is given horizontal movement, and a guide pin is placed on each slider i2S, and when the upper 1st docking cylinder (23) is actuated to the docking fill, each of the above Prior to the engagement of the drive shaft (16a) of the socket tte with the recess (22) at the tip of each nut runner, each guide bin 1261 is inserted into the guide hole (11aJ) formed in the setting jig (10). The drive shaft (16aJ) and the recess (22a) can be reliably centered, and can also be used with setting jigs 0υ of different models.

In the drawing, 10 is a set jig qυ dispensing conveyor installed on the lifting platform (4), and 10 is a set jig qυ provided on the set jig Uυ that inserts the journal part of the crankshaft D and positions it in the axial direction. G determining member, 4 is each nut runner C
3 shows a stopper that restricts horizontal movement.

Further, positioning means C23t is provided at a side position of the set table (3) on the upper side of the machine frame (2), and each connecting rod B hanging from the cylinder block set on the set table (3) is provided. The axial center of this piston knob is 1J1
tl and the center of the entire downward lb of each connecting rod B?
Made it possible to match the @ line of piston O.

As shown in the figure, the serving means 1, figures 9 to 11 are as follows.
As shown in the figure, the large end F of each connecting rod B is inserted into the movable frame (7) that moves laterally toward the cylinder block on the set table (3), and the leading end of the connecting rod B is aligned. The movable frame ■ is made up of four positioning tools 6υ having guide grooves (31a+), and the movable frame (■) is moved along the rail (32aJ) fixed to the machine frame (2) by the first cylinder (first movable which moves forward and backward with 32BL). A frame Ga, and a second cylinder (composed of a second movable frame Q that moves forward and backward with respect to the first moving frame θ2 with 33aJ, and each of the overlapping tools 61 is mounted around the second movable frame) and each slide bearing. The two positioning tools 6υ shown by W and Y in FIG. 10 and the two positioning tools 3υc3In shown by X and Z in FIG. - Each is connected with a rod field, and a cylinder (to) is attached to the tail end of the Y positioning tool 6υ,
The piston rod (36a) of the cylinder (to) is attached to the tail end of the X positioning tool 3υ, and each stopper for regulating the movement of both Y positioning tools 3υr31) is attached to the second movable frame. 07) H37) is installed, and each positioning tool 6υo N & each connecting rod B moves forward to the vicinity of the large end F by the movement of the first movable frame G2 due to the forward movement of the first cylinder <32bJ. and the second cylinder (33aJ
The operation of the second movable frame Q in the forward direction allows the large-diameter end F to be inserted into each of the guide grooves (31a1), and the operation of the cylinder shaft allows the insertion of the large diameter end F into each guide groove (31a). The positioning tool C31)t- These spaces are moved between a relatively wide state shown by a solid line and a relatively intermediate state shown by a chain line, so as to be compatible with two types of cylinder blocks 8.

In the drawing, (to) (to) indicates a bolt presser that moves laterally toward the cylinder block on the five cellars (3). A When moving forward to IJijl, cover the head of the connecting rod cap (H) inserted into the large end gF of each connecting rod B from above, and press it so that it does not come off when inserting it into the bolt hole of each connecting rod cap E. .

To explain the operation of the execution row without cutting, first, the set table (3)
Set the cylinder block with the piston 0 with the connecting rod inserted thereon, and then move each positioning tool Cυ of the positioning means 4 to the first and second cylinder cylinders (32b) (33
The operation of step a) moves the cylinder block A side forward. According to this, the large end F of each cooking stove)'B is inserted into the guide groove (31m) at the tip of the respective cooking tool 131). The center line of the connecting rod B in the hanging direction matches the axis of each piston (0).

Next, each bolt presser moves forward toward the cylinder block A side, and each positioning tool G1)? make them retreat.

Also, put the crankshaft D, connecting rod cap, nut, and set jig (11) on the lower side of the setting table (3), and then place the positioning bin (1'3) on the lifting table (4). Protrude and position the jig (In) on the lifting table (4), and after completing the alignment of each rod B as described above, operate the motor Uα to fully raise the lifting table (4), and Each pin ffflG'a of the crankshaft D is brought into contact with the large end F of the connecting rod B, and each connecting rod bolt H4 of the large diameter end F is inserted into the bolt hole of each connecting rod cap E, and then the tonking cylinder/ CSV
The mounting plate tznt- is raised relative to the lifting platform (4) when activated, and each socket of the set jig αυ is placed in the recess C22a) of each nut runner on the mounting plate 2υ.
The IG drive shaft (16a) is connected.

Each socket 11. is then activated by actuating each nut runner. The nut at the tip of +3 is tightened with each connecting rod port) (K).

After that, the lifting platform (4) is fully lowered, the positioning pin a9 is recessed, and the υ setting jig αυ is completely discharged from the conveyor (41).
Also, the cylinder block N on the set table (3) is delivered by the roller conveyor (1) to complete the assembly work.

(Effect of the Invention J As described above, according to the present invention, the large end of the connecting rod can be reliably assembled without attaching the crankshaft to each metal, and the socket can be used to freely set the nut in the setting jig. The hole setting jig that separates and separates the nut runner from the lifting platform can be made simple and relatively small.Furthermore, if multiple setting jigs are prepared, the nut runner requires only 11 tons.
! One set jig is sufficient and the cost can be obtained at low cost.

[Brief explanation of drawings]

Figure 1 is a plan view of the entire device of the present invention, and Figure 2 is its ■-
■A view taken along the line, Fig. 3 is an enlarged front view of the main part, Fig. 4 is a view taken along the IV-IV line, Fig. 5 is a sectional view along the ■-■ line, and Fig. 6 is a setting jig. , FIG. 7 is a plan view thereof, FIG. 8 is a sectional view taken along the line ■-■ in FIG. 6, FIG. 9 is a front view of the alignment means, FIG. 10 is a plan view thereof, and FIG. 11 This is the 11th diagram. (2)...Machine frame (3)...Set stand (
4)...Elevating platform αυ...Set jig 06
)...Socket Qυ...Mounting plate 12 diagram...
・Naratra/su no... place 11@'se means N...
Cylinder block B...Conrod 0...Piston D...Crankshaft E...Conrod cap F...Large end of connecting rod G...Pino part of crankshaft H...Conrod grip ... Nut Figure 7 Figure 6 Figure 8

Claims (1)

[Claims] A setting table that can freely position a cylinder block with a piston with connecting rod inserted on the upper side of the machine frame with the connecting rod hanging down, and a setting jig that is inserted into the lower side of the setting table on the lower side of the machine frame. The crankshaft and the connecting rod cap can be freely set on the setting jig, and the pin portion of the crankshaft is brought into contact with the large end of the connecting rod by raising the setting jig. In addition, in a crankshaft assembly device in which the conrod bolt at the large end is inserted into the bolt hole of the conrod cap and a nut is tightened thereon, the center line of the conrod in the hanging direction is aligned with the machine frame. A positioning means is provided for moving the connecting rod in the axial direction of the piston pin so as to match the axis of the piston, and the setting jig is further provided with a socket on the tip of which a nut can be freely set, and the elevating table is interlocked with this. 1. A crankshaft assembly device comprising: a nut runner which is movable up and down with respect to the elevating platform and which is connectable to the socket via a mounting plate which is movable up and down with respect to the elevating platform.