JPH04102722U - Cutting machine - Google Patents

Abstract

(57) [Purpose] A cutting machine that can cut at angles and uses a 3-point support system.The front vise is extremely easy to handle when changing settings between right-angle and angle cuts, and even after long-term use, the workpiece can be processed easily. To provide a cutting machine which is less likely to cause errors in the accuracy of right-angle cutting by clamping an object with a front vise. [Structure] The reference side jaw of the front vise is rotatable about a horizontal axis, and means is provided for displacing the reference side jaw between two states: an upright state and a state in which it is tilted outward at least 90 degrees from that state. By tilting the reference side jaw of the front vise during angle cutting, interference with the workpiece is avoided.

Description

[Detailed explanation of the idea]

0001

[Industrial Application Field] This invention is suitable for cutting machines such as band saws and other saw machines. For more details, in addition to right-angle cutting of shaped steel, it is also possible to cut at an angle at any slope angle. Regarding cutting machines that can

0002

[Prior Art] As a method of cutting a workpiece such as a section steel at an arbitrary slope angle, Conventionally, when the workpiece is long, the cutting head equipped with the cutting tool is moved along a predetermined axis. It is supported on a revolving table that can freely rotate around the center, and this revolving table A method of determining the slope angle with the workpiece by fixing it at an arbitrary angular position, As illustrated in FIGS. 4 and 5, the position is a predetermined distance away from the main vice 1. In addition to installing an auxiliary vice 2 for angle cutting on the The auxiliary vice 2 for angle cutting is set so that the turning table 11 is free to rotate without being fixed. The workpiece is machined at one point, and three points: the reference side of the main vise 1 and the moving side jaws 1a and 1b. By clamping and fixing the workpiece W, the rotation table is rotated based on the posture of the workpiece W. There is a method in which the entire cutting head 11 follows the set angle.

0003 Among the conventional methods, the former cutting head (swivel table) is set at a set angle. The method of fixing the workpiece may cause problems such as when the workpiece is brought in in a bent or meandering manner. Even if the vise is tightened, if the workpiece is long, it may not follow the vise surface and may fall on the slope angle. Errors may occur. On the other hand, in the latter method using three-point support, cutting is performed using the workpiece as a reference. Since the amount of rotation of the cutting head is determined, it is always correct regardless of bending or meandering of the workpiece. It is possible to cut at a precise slope angle.

0004

[Problem to be solved by the invention] By the way, when cutting long workpieces such as shaped steel, In cutting work, the overwhelming majority of work involves cutting both ends at right angles. At this time, In order to cut the workpiece without turning it back and forth, the main vise at the rear of the cutting tool must be It is necessary to provide a front vise mechanism in front of the crab cutting tool. Even with the method that allows accurate slope angle cutting using three-point support, the workpiece is In order to make a right angle cut on both ends without turning the main bar, as shown in Figure 4, In addition to the chair 1 and the auxiliary vise 2 for angle cutting, the main vise is attached with a cutting tool C such as a saw blade in between. Another vise (front vise) 30 is required in front of the device 1. Structure like this When cutting at an angle with a cutting machine, the reference of the front vise 30 is set as shown in Fig. 5. Since the side jaw 30a gets in the way, either remove it or make it larger as shown in the diagram. Therefore, it is necessary to make the reference side jaw 30a movable. there were.

[0005] Here, when making a right angle cut using the front vise 30, use the front vise 30 The reference side jaw 30a is securely and firmly fixed by the pin 301 and bolt 302, etc. If you do not do this, the perpendicularity of the cut may be incorrect, but each time you make an angle cut, I guess the pin 301 was inserted and removed from 30a and the bolt 302 was tightened and loosened. Not only is the setting cumbersome, but the pin 301 is difficult to insert and remove. In addition, it must be fitted into the hole with a gap, and it may not be possible to use it for a long period of time. This creates additional play between the pin and the hole due to wear and pressure, which reduces the squareness of the cut. The problem was that it was difficult to maintain.

[0006] This invention was developed in consideration of these points, and it is possible to cut at an accurate slope angle. Adopts a structure using the possible three-point support method, and also has a set of right angle cuts and angle cuts. The front vise is extremely easy to handle when changing the ring, and it can be used for a long time. Therefore, we aim to provide a cutting machine that hardly causes any deviation in squareness when cutting at right angles. It has been the target.

[0007]

[Means for solving the problem] Implement a configuration to achieve the above purpose. To explain with reference to FIGS. 1 to 3 corresponding to examples, the present invention provides cutting A main vise 1 and a front vise 3 in front of the main vise 1 are placed on the turning table 11 that supports the head. , and an auxiliary angle cutting vice 2 for setting the angle. When cutting the workpiece at right angles, the reference side jaw 1a of the main vice 1 and the moving side When clamping the workpiece with the jaws 1b and cutting the workpiece at an angle, use the angle cutter. one point on the auxiliary vise 2 for By clamping and fixing the workpiece W at the three points -1b, the rotary table 4 In a cutting machine configured to rotate at a set angle with respect to the object W, the front byte The reference side jaw 3a of the vise 3 is connected to the horizontal axis provided on the vise stand 3c of the vise 3. 3d, and the reference side jaw 3a is held upright. for displacing between the two states of the state and the state of falling outward by at least 90°. It is characterized by being equipped with a mechanism (for example, a hydraulic cylinder) 3e.

[0008]

[Function] The reference side jaw 3a of the front vise 3 is It is used in an upright position as shown in (A), but the same figure is used for angle cutting work. By tilting it outward as shown in (B), you can create a state where it does not interfere with the workpiece. can do. This collapsible front vise structure features locating pins and bolts. Remove the positioning pin from the fixed state, loosen the bolt, and attach the reference side jaw 3. Compared to the conventional structure that changes the state of moving a, it is easier to change the setting. It's very easy. In addition, in the conventional structure, the gap between the positioning pin and its mating hole is straight. This has a negative effect on the angle, whereas this collapsible front vise structure allows rotation around the horizontal axis. Since it is rotatable with small tolerances, there is almost no deviation in perpendicularity.

[0009]

[Embodiment] Figures 1 and 2 are plan views showing the configuration of an embodiment of the present invention. This shows the state of right angle cutting and the state of angle cutting. On the rotating table 11 supported rotatably on a horizontal plane on the base 10, conventional A main vise 1 and an auxiliary vise 2 for angle cutting are provided, similar to the three-point support system. At the same time, there is a cutting tool C such as a band saw blade in front of the main vise 1, and a rear As described above, a front vise 3 having a structure characteristic of the present invention is provided.

0010 The angle cutting auxiliary vice 2 is attached to the rotating table 1 by means of a screw mechanism 2a equipped with an angle meter. 1, and the center of rotation of the rotation table 11 is located at Z in the figure. As shown in the figure, there is a Ru. Note that 13 and 14 are, for example, a saw frame of a band saw machine that supports the cutting tool C. The main column for sliding guide of the cutting head (not shown) such as This is a sub-column.

[0011] When performing a right-angle cut, the workpiece W is placed at the reference point of the main vise 1, as shown in Fig. 1. Between the side jaw 1a and the moving side jaw 1b, or between the reference side jaw 3a of the front vise 3 It is fixed between the movable jaws 3b and cut at right angles by the cutting tool C. be done. Due to the presence of the front vise 3, it is possible to cut the rear end of the workpiece W at right angles. Even if it is impossible to clamp the workpiece W with the main vise 1, the workpiece W should not be turned back and forth. It can be cut easily.

0012 When making an angle cut, make the angle cut at the position corresponding to the set angle as shown in Figure 2. At the same time as moving the auxiliary vise 2 for The clamping surface is brought into a horizontal state to avoid interference with the workpiece W. FIG. 3 is a front view showing the structure of the front vise 3, in which (A) shows a state in which a right-angle cut is made; (B) shows the state in which angle cutting is performed, and below, referring to this figure, the front vise 3 will be explained. This will be explained in detail.

[0013] The front vice 3 has a reference side jaw 3a and a moving side jaw 3b arranged on a vice stand 3c. The movable jaw 3b is connected to the hydraulic cylinder 3f like a normal vise. Therefore, it moves forward and backward relative to the reference side jaw 3a. The reference side jaw 3a is a vice stand 3c. It is rotatably supported around a horizontal axis pin 3d provided in the vice stand 3c. By driving the hydraulic cylinder 3e installed inside, the clamping surface becomes upright as shown in (A). It is possible to change the position from the state shown in FIG. It is configured so that it can be done. With this configuration, the shape (A) in which the right angle cut is made is possible. Just by driving the hydraulic cylinder 3e, the state will change to state (B), and the angle will be cut. Interference between the front vise 3 and the workpiece W can be easily avoided when Ru.

[0014] Here, the positioning of the reference side jaw 3a in the upright state is performed using, for example, a hydraulic cylinder. By adjusting the stroke end of the dazzle 3e to be used as a stopper, the It is possible to maintain a set posture accurately. In addition, there is no need to change the reference side jaw 3a of the front vise 3 from an upright state to a horizontal state. In addition to using the hydraulic cylinder 3e as described above, for example, a lever or the like can be used as the stage. Other known mechanisms may be employed, such as manually operated systems.

[0015] In addition, when cutting at an angle, the reference side jaw 3a is It goes without saying that it may be tilted over a large angle, that is, over 90 degrees. Furthermore, this invention can be used with various saw machines such as band saws, as well as other cutting machines such as whetstones. It goes without saying that it is equally applicable to cutting machines using tools.

[0016]

[Effect of the invention] As explained above, according to the invention, the so-called three-point support In a cutting machine capable of holding type angle cutting, the reference side jaw of the front vise is set on the horizontal axis. The reference jaw is rotatably supported around Since we have provided a means for displacing between states rotated by 0° or more, it is different from conventional pins. Compared to the fixing method using screws, it is possible to change the settings to make an angle cut from a right angle cut. In addition to being able to extremely easily avoid interference from the front vise when changing the position, Due to its mechanism, even if the settings are repeatedly changed over a long period of time, the squareness accuracy will be lost. Never.

[Brief explanation of drawings]

[Fig. 1] Plan view of the embodiment of the present invention shown in a state in which a right-angle cut is being made.

[Fig. 2] Plan view of the embodiment of the present invention shown in a state where angle cutting is performed.

[Fig. 3] Front views of the front vise 3 of the embodiment of the present invention shown in a state (A) for making right angle cuts and a state (B) for making angle cuts.

[Figure 4] Plan view of a conventional three-point support type cutting machine showing a state in which a right-angle cut is being made.

[Fig. 5] Plan view of a conventional three-point support type cutting machine showing an angle cutting state.

[Explanation of symbols]

1... Main vise 2...Auxiliary vise for angle cutting 3...Front vise 3a...Reference side jaw 3b...Moving side jaw 3c... Vice stand 3d...Horizontal axis 3e...Hydraulic cylinder (for changing reference side jaw posture) 3f...Hydraulic cylinder (for moving jaw drive) 10...base 11... Rotating table C...Cutting tool W...Workpiece Z・・・Rotation center of rotating table

Claims (1)

[Scope of utility model registration request] Claim 1: A main vise, a front vise in front of the main vise, and an auxiliary angle cutting vise for setting the angle of the angle cutting are provided on a turning table that supports a cutting head, and the turning table When cutting the workpiece at a right angle, the workpiece is clamped between the reference jaw and the movable jaw of the main vise, and when cutting the workpiece at an angle, the angle cutting auxiliary is used. A cutting machine configured to be rotated at a set angle with the workpiece as a reference by clamping and fixing the workpiece at one point on the vise and three points: the reference side jaw and the movable side jaw of the main vise. , the reference side jaw of the front vise is rotatably supported around a horizontal axis provided on the vise stand of the front vise, and the reference side jaw is rotated outward by at least 90 degrees from the upright state. 2 with a fallen state
A cutting machine characterized by comprising a mechanism for displacing between states.