JPS5821623Y2 - Work holding device in cutting machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a workpiece holding device in a cutting machine such as a saw, and particularly in a horizontal band saw for angle cutting, which can cut a workpiece such as H-beam steel at an appropriate angle with respect to the longitudinal direction. It is something.

The workpiece holding device presses a workpiece clamped and fixed between a fixed pipe jaw and a movable vice jaw in a cutting machine from above.

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

FIG. 1 is a plan view showing a horizontal band saw for angle cutting as a cutting machine.

A machine stand 1 in this cutting machine is rotatably supported on a base 3.

In other words, the machine base 1 rotates around a shaft 5 that penetrates the machine base 1 and stands upright on the base 3, and is guided and supported by arc-shaped guide rails 7.9 laid on the base 3. It is something that

A saw blade housing 11 is mounted on the machine base 1 so as to be movable up and down, and a drive wheel 15 and a driven wheel IT around which the band saw blade 13 is wound are rotatably installed inside the saw blade housing 11. be.

A vice bed 21 is further mounted on the machine base 1 and has a movable vice jaw 19 that is slidable and rotatable, and a fixed vice jaw 2 that faces the movable vice jaw 19
3 is integrally connected to a connecting plate 2T provided integrally with the top of the shaft 5 and the roller stand 25 erected on the base 3.

That is, the fixed vice jaw 23 is provided integrally with the base 3 and is provided slidably on the upper surface of the vice bed 21.

Therefore, when the machine base 1 is rotated with respect to the base 3, the saw blade housing 11 and the vice bed 2 mounted on the machine base 1 are rotated.
1 rotates integrally, but the fixed vice jaw 23 remains at a fixed position.

The shaft 5 is located at the intersection of the cutting traveling line 29 of the band saw blade 13 and the extension of the inner surface of the fixed vice jaw 23, and is located below the upper surface of the vice bed 21, so that the saw blade The structure is such that it will not be cut when the housing 11 is lowered, etc., and the structure for rotating the machine 1 with respect to the base 3 is already known, so the details thereof will not be explained here. The explanation will be omitted.

Now, the work holding device 31 according to the present invention is rotatably and slidably supported by the movable vice jaw 19 and the fixed vice jaw 23 as described above.

That is, as shown in FIGS. 2 and 3, at the tops of the movable vice jaws 19 and the fixed vice jaws 23, there are support blocks 33a whose horizontal cross-sections are approximately triangular;
33b is integrally fixed by welding or the like, and each support block 33a.

A support plate 35 with an arc-shaped engagement edge is disposed on the upper part of the support plate 33b.
a, 35b is the installation.

A frame body 3 supporting a workpiece suppressing device 3T for pressing a workpiece W such as an H-beam steel sandwiched and fixed between the fixed vice jaws 23 and the movable vice jaws 19 from above.
Reference numeral 9 denotes each beam member 41a, in which mutually opposing beam members 41a and 41b are integrally connected via a plurality of connecting rods 43 such as bolts.

41b have longitudinal guide grooves 45a,
45b are respectively formed.

The guide grooves 45a and 45b are connected to the support plates 35a and 3
By engaging with the arc-shaped engagement edge 5b, the work holding device 31 is slidably and rotatably supported by the movable vice jaw 19 and the fixed vice jaw 23.

A bracket 47 is attached to an appropriate position f of the frame 39, and the tip of a link 51 whose base is pivoted to the fixed vice jaw 23 as a fixed part via a pivot 49 is attached to the bracket 47 with a pin. It is connected via 53.

As shown in detail in FIG. 4, the workpiece suppressing device 3T is composed of a cylinder 55.
The beam member 4 is attached to the cylinder cap 5T on the lower side of the cylinder cap 5T.
The guide grooves 45a and 45b formed in 1a and 41b
The flange portions 59a and 59b that are engaged with are formed.

Also, one beam member 4 is attached to the cylinder cap 57.
A bracket 61 located outside 1b is integrally attached, and a set screw 63 for fixing the workpiece pressing device 37 to the frame 39 is screwed into this bracket 61.

With the above configuration, the workpiece suppressing device 37 has the set screw 63
After loosening, it can be moved and fixed to an appropriate position on the frame body 39.

A suppressing plate 61 that presses down the workpiece W from above is swingably attached to the lower end of the piston rod 65 projecting downward from the cylinder cap 5γ via a ball joint or the like.

In the above configuration, after the machine 1 is appropriately rotated with respect to the base 3, the work W is fixed to the fixed vice jaw 23.
and the movable vice jaws 19, and actuates the cylinder 55 in the workpiece suppressing device 3T to press the workpiece W from above by the suppressing plate 61.

Thereafter, the drive wheel 15 is driven, the saw blade housing 11 is lowered, and the band saw blade 13 performs cutting.

By the way, in the present invention, the frame 39 of the work holding device 31 has a beam attached to the arcuate engagement edges of the support plates 35a and 35b fixed to the upper part of the movable vice jaw 19 and the fixed vice jaw 23. The guide grooves 45a and 45b formed in the members 41a and 41b are slidably engaged with each other, and the frame 39 has a distal end portion of a link 51 as a fixed portion whose base portion is pivoted to the fixed vice jaw 23. are pivotally connected, so when the machine 1 is rotated with respect to the base 3, the work holding device 31 is connected as described above.
The frame body 39 rotates around the support plate 35b fixed to the fixed vice jaw 23 as shown in imaginary lines in FIG. The length of the link 51 limits the frame body 39 to slide relative to the support plate 35b.

That is, the frame body 39 of the workpiece holding device 31 is automatically positioned in the longitudinal direction when the machine frame 1 is appropriately rotated with respect to the base 3, and the workpiece pressing device 3γ is moved to the workpiece W. It will always be located approximately at the center in the middle direction.

Usually, when the machine base 1 rotates, the frame 39 of the work holding device 31 slides in the longitudinal direction, so that the end of the frame 39 moves away from the movable vice jaw 19. It does not protrude significantly in any direction.

Therefore, one part of the saw blade housing 11 that descends during cutting
This can prevent the portion from interfering with the end portion of the frame body 39.

Although a preferred embodiment of the present invention has been described, the present invention is not limited to the above-mentioned embodiment, and the present invention can be modified by making various design changes etc. can be carried out.

For example, a structure in which a frame in a work holding device is slidably and rotatably supported by a fixed vice jaw and a movable vice jaw includes a support plate that is slidably engaged with a guide groove of the frame, a fixed vice jaw, It is also possible to have a configuration in which the movable vice jaws are rotatably attached to each movable vice jaw.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a plan view of a horizontal band saw for angle cutting as a cutting machine, Fig. 2 is an explanatory plan view of the main parts, and Fig. 3 is the same. Front illustration,
FIG. 4 is a side sectional explanatory view of the main part. Explanation of symbols representing the main parts of the drawing, 19...
- Movable vice jaw, 23...Fixed vice jaw 31...Work pressing device, 39...
Frame, 51...link.

Claims (1)

[Scope of utility model registration request] A workpiece suppressor that presses a workpiece held between the fixed vice jaw and the movable vice jaw from above on a frame body that is slidably and rotatably supported by the fixed vice jaw and the movable vice jaw in a cutting machine. Install and install the device,
A work holding device for a cutting machine, characterized in that a tip of a link whose base is pivotally connected to an appropriate fixed portion of the cutting machine is pivotally connected to an appropriate position of the frame.