JP2579667B2 - Bed horizontal reference adjustment method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method of adjusting the horizontal reference of a bed placed on a transport trolley.

<Conventional technology> Conventionally, in order to assemble a grinder in a line sink, a bed is placed on a transport trolley, and the bed is moved together with the transport trolley. At each station, finishing work of the sliding surface of the bed, assembling work of a ball screw. , A work of rubbing a table, a work of rubbing a feed bar, and a work of installing a headstock and a tailstock on a table.

<Problems to be Solved by the Invention> In order to perform these operations, the upper surface of the bed needs to be horizontal. For this reason, conventionally, the lower surface of the carrier is supported by each station. A transport trolley jack for adjusting the upper surface to be horizontal is provided, and the transport trolley jack is adjusted each time a plurality of transport trolleys are moved to the next station. For this reason, it took time and effort to adjust the jack for the transport trolley.

<Means for Solving the Problems> The present invention has been made to solve such a problem, and a plurality of transport vehicles for supporting a bed of a machine tool via a bed jack are provided. The bed transfer device is provided with a transfer device for sequentially moving the plurality of stations together with the bed, and at each station, a transfer truck jack for supporting the lower surface of the transfer truck and adjusting the upper surface of the bed to be horizontal. A master carrier on which a level is installed on one of the plurality of carrier vehicles, and moving the master carrier to each station so that the upper surface of the master carrier is horizontal at each station. Adjust the transport trolley jacks while checking with the level, and after the adjustment of the transport trolley jacks at each station is completed. The bed of the machine tool is placed on the transport trolley at the movement start position, and the bed jack is adjusted while checking with a level so that the upper surface of the bed is horizontal at the movement start position.

<Operation> The transport vehicle at the movement start position is adjusted by moving the master transport vehicle to each station and adjusting the jack for the transport vehicle while checking with a level so that the upper surface of the master transport vehicle is horizontal at each station. Place the machine tool bed on the bed and adjust the bed jack while checking with a level that the top of the bed is horizontal at the movement start position.
When the work at the movement start position is completed, the bed of the movable cart is moved to the next station, and the assembling work is performed without adjusting the jack for the transport cart and the jack for the bed.

<Example> Hereinafter, an example of the present invention will be described with reference to the drawings. First
In the drawing, reference numeral 10 denotes a transport vehicle, 11 denotes a pair of guides for guiding the transport vehicles 10 in the transport direction A, and 12 denotes a transport device for simultaneously pulling a plurality of transport vehicles 10 and moving them in the transport direction A. And 13 is a hose winder.

One of the plurality of transport vehicles 10 is a master transport vehicle 10b having a reference surface 10a that is not painted at nine locations,
On each of the reference surfaces 10a, a level 14 for monitoring the horizontal state of the upper surface of the master carrier 10b is detachably installed. The transfer device
12 is a wire 15 and a winch 16 for winding the wire 15
And a motor 17 for rotating the winch 16.

In FIGS. 1, 2 and 3, a first traction unit 20 is attached to the left end of the transport carriage 10, and a second traction unit 21 is attached to the right end in FIGS. The first pulling unit 20 has a pair of rollers
A pin portion 23 is provided for engaging a hook 22 attached to one end of the wire 15 with the wire 22. An engaging groove 24 is formed in the second pulling portion 21 so as to be vertically inserted into the roller 22 of the right carrier 10 and engage in the carrying direction A. A hose 25 for supplying compressed air is detachably connected between the two transport carts 10, and the hose 25 of the transport cart 10 on the left end is wound up by the hose winder 13, and is connected via an open / close valve (not shown). Connected to a compressed air supply.

In addition, each carrier 10 is provided with buoyancy generators 26 at four corners, and the carrier 10 is floated by supplying compressed air from the compressed air supply source to these buoyancy generators 26. I have. Each carrier 10 has a hose 25 on the left
A supply passage (not shown) is formed to guide the compressed air to the buoyancy generator 26 and to the right hose 25. Instead of connecting the hose 25 to the right side, the right end carriage 10 is provided with a filling plug (not shown) so that the compressed air in the supply passage does not leak outside.

Further, each carrier 10 is provided with four hooks 27 for moving the carrier 10 moved to the left end to the right end using a crane. At each of the transport vehicles 10, reference plates 28 are attached at eight locations on four sides with which a transport vehicle jack described later abuts.

Each station is provided with a transport truck jack 30 at a position corresponding to the reference plate 28 on the ground, and the transport truck jack 30 includes a knob 31 and a contact portion 32 that moves up and down by rotation of the knob 31. ing.

A bed 40 of a grinding machine is placed on the transport trolley 10, and a plurality of bed jacks 41 for adjusting the upper surface of the bed 40 to be horizontal are provided between the bed 40 and the upper surface of the transport trolley 10. . As shown in FIG. 4, the bed jack 41 has a support plate 43 having a semi-spherical projection 42 formed on an upper surface thereof.
An adjusting bolt 45 having a conical groove 44 engaged with the projection 42 and screwed to the bed 40, and a nut 46 screwed to the adjusting bolt 45 to restrain the rotation of the adjusting bolt 45. . The bed 40 has recesses 48 and 49 formed therein so that a wrench (not shown) can be engaged with the head 47 and the nut 46 of the adjusting bolt 45 to easily turn the wrench.

Next, the operation will be described based on the above configuration. A transport vehicle 10 is installed at each station, and each transport vehicle 10 is connected to an adjacent transport vehicle 10 via a first traction unit 21 and a second traction unit 22. In this state, the adjacent transport vehicles 10 are connected via the hose 25, and the hose 25 wound around the hose winder 13 is connected to the leftmost transport vehicle 10. The hook of the wire 15 wound around the winch 16 is hooked on the pin portion 23 of the first pulling portion 20.

In a state where the master carrier 10b is at the right end that is the movement start position or the assembly start position, the master carrier 10b
The level 14 is set on the reference surface 10a, and the knob 31 of the jack 30 for the transport vehicle is turned so that the upper surface of the transport vehicle 10b for the master is horizontal while watching the level 14. When the adjustment of the transport vehicle jack 30 at the movement start position is completed, the hose 25 is removed from the transport vehicle 10 at the left end, and the hook of the wire 15 is removed. The leftmost carrier 10 is lifted by a crane, the hose 25 is attached to the second carrier 10 from the left end, and the hook of the wire 15 is hooked. In this state, compressed air is supplied to the buoyancy generator 26 of each carrier 10 to lift each carrier 10 away from the carrier jack 30, and the carrier 12 moves each carrier 10 in the transport direction A.
Then, only one of the transport vehicles 10 is moved. Subsequently, the supply of the compressed air to the buoyancy generator 26 is stopped, and each of the transport vehicles 10 is placed on the transport vehicle jack 30, and the transport vehicle 10 lifted by the crane to the station at the rightmost movement start position is moved. take down. While the master carrier 10b is located at the second position from the right end, the carrier carrier jack 30 is positioned so that the upper surface of the master carrier 10b is horizontal while looking at the level 14.
Turn the knob 31 of. By repeating the above-described operation, the upper surface of the master carrier 10b supported by the carrier jack 30 at each station becomes horizontal.

In this state, the rightmost transfer vehicle 10 which is the movement start position
The bed 40 of the grinding machine lifted by the crane is placed on the bed, and the level 14 is placed on the upper surface of the bed 40. Next, level
While watching 14, adjust the bed jack 41 using a wrench so that the upper surface of the bed 40 is horizontal. When the assembling work at the right end station is completed,
10 is lifted by a crane, the plurality of transport vehicles 10 are lifted by compressed air, and are moved in the transport direction A by one transport vehicle. The carrier 10 lifted by the crane is lowered to the rightmost movement start position. In the second station from the right end, the transport vehicle 10 is moved for each bed 40, and the height position of the contact portion 32 of the transport vehicle jack 30 is the same at any station. It becomes horizontal without adjusting the trolley jack 30 and the bed jack 41. At the second station from the right end, finishing work of the sliding surfaces 40a and 40b of the bed 40 is performed. By repeatedly performing the above-described operation, a new bed 40 is placed on the rightmost transport trolley 10, and the already placed bed 40 is assembled with a ball screw, rubbing the table, rubbing the feed plate, The work of installing the headstock and tailstock on the table is sequentially performed, and the grinding machine, which has been assembled at the left end station, is lifted by a crane and placed on the ground other than the carrier 10. The empty leftmost carrier 10 is transported by the crane to the rightmost station.

With the master carrier 10b emptied at regular intervals and the level 14 installed, check the horizontal state of the upper surface of the master carrier 10b. Adjust 41. This check is performed each time the master carrier 10b is moved to the next station. Since the bed 40 is placed on the master carrier 10b in the same manner as the other carriers 10, the master carrier 10b is also damaged like the other carriers 10 and the carrier 10
Is adjusted with the transport vehicle jack 30 based on the upper surface of the master transport vehicle 10b.

Each carrier 10 is machined so that the upper surface is horizontal, but there is a machining error of about several tens μm between the carriers 10.
This processing error is absorbed by adjusting the bed jack 41 at the transfer start position.

<Effect of the Invention> As described above, the present invention provides a jack for a transport vehicle while moving the master transport vehicle to each station and checking with a level so that the upper surface of the master transport vehicle is horizontal at each station. Adjust the bed, place the machine tool bed on the transport trolley at the movement start position, adjust the bed jack while checking with a level that the top of the bed is horizontal at the movement start position, and move the bed jack. When the work in step 2 was completed, the bed for each carrier was moved to the next station, so it was necessary to adjust the jack for the carrier and the jack for the bed so that the upper surface of the bed would be horizontal at other stations. Absent. Therefore, an effect that the bed horizontal reference adjustment can be easily performed in a short time is obtained.

[Brief description of the drawings]

1 is an overall plan view, FIG. 2 is a plan view of a carrier, FIG. 3 is a view from arrow III in FIG. 2, and FIG. 4 is a bed. FIG. 10… Transfer trolley, 10a …… Reference plane, 10b …… Master transport trolley, 12 …… Transfer device, 14 …… Level, 28 …… Reference plate,
30: Jack for transport carriage, 40: Bed, 41: Jack for bed.

Continuation of the front page (56) References JP-B 39-25612 (JP, B1) JP-B 42-12744 (JP, B1)

Claims (1)

(57) [Claims] 1. A plurality of transport vehicles for supporting a bed of a machine tool via a jack for a bed are provided, and a transport device for sequentially moving these transport vehicles along with the bed over a plurality of stations is provided. In a bed transport device provided with a transport truck jack for supporting the lower surface of the truck and adjusting the upper surface of the bed to be horizontal,
One of the plurality of transport vehicles is a master transport vehicle on which a level is installed on the upper surface, and the master transport vehicle is moved to each station so that the upper surface of the master transport vehicle is horizontal at each station. After adjusting the jack for the transport vehicle while checking with the level, the adjustment of the jack for the transport vehicle at each station is completed, and then the bed of the machine tool is placed on the transport vehicle at the movement start position, and the movement start position is set. A bed horizontal reference adjustment method that adjusts the bed jack while checking with a level so that the top of the bed is horizontal.