RU26763U1 - DEVICE FOR CUTTING LENGTH BILL - Google Patents

Description

™, -g-r yyy-- -: IPC B23D21 / 04

Device for cutting long workpieces

The utility model relates to mechanisms for cutting long workpieces and can be used in mechanical engineering, in the petrochemical, construction and other industries related to both cutting pipes and other non-circular profiles.

A device for cutting pipes (USSR AS No. 1581482, class B 23 D 21/04, op. 30.07.90, bull. No. 28, 1990) is known, which includes a symmetrically cut pipe installed in the housing with the possibility of simultaneous turning around its axis, the shafts of the cutting mechanism, made in the form of cranks with a cutting tool, which, in turn, is made in the form of cutting discs located in the same plane and located at a distance of a given shoulder of the eccentricity relative to the shafts of the cutting tool, the drive of the cutting mechanism, the cutting drive tool mechan ZM clamp pipe, made in the form of a vise with a separate drive.

The known device also includes additional kinematic links, through which rotation of the cutting mechanism shafts around its axis is coordinated, which ensures the supply of the cutting tool — the cutting discs into the cutting zone in an arc, and the planetary movement of the cutting discs themselves around the cut pipe, carried out from the cutting tool drive. In this case, the drive of the cutting mechanism by means of a chain of transmission elements converts the translational motion into rotational.

The disadvantage of this device is the complexity of the kinematic scheme, affecting the reliability of the entire structure.

B23D 45/12

solid section.

The problem to which the claimed technical solution is directed is to expand the arsenal of existing devices for cutting long workpieces, including pipes.

The technical result achieved by using the inventive utility model is to simplify the design and expand the technological capabilities of the proposed device, providing cutting of long workpieces of round and profile cross-section, both hollow and solid.

The problem is solved using the inventive device for the transverse cutting of long workpieces, which has at least the features contained in the formula of the utility model, namely: installed in the body symmetrically relative to the cut workpiece with the possibility of simultaneous rotation of the shafts of the cutting mechanism around its axis, shafts cutting tools, each of which is installed in parallel, at a distance of a given eccentricity shoulder corresponding to the cutting mechanism shaft equipped with a link, rigidly with n m connected and forming a kinematic connection with the cutting tool shaft, a cutting tool made in the form of cutting discs located in the same plane and fixed to the cutting tool shafts, the drive of the cutting mechanism, the drive of the cutting tool, the clamping mechanism of the workpiece, each eccentricity arm is angled relative to the cut workpiece, allowing the cutting discs to sequentially carry out the cut.

The presence of the drive shafts of the cutting tool allows the cutting discs to make an individual rotational movement, since by definition the shaft transmits torque to the parts attached to them.

the ability to simultaneously perform the individual rotational movement of the cutting discs and the rotation of the shafts of the cutting mechanism around its axis without the use of additional kinematic links.

To ensure the supply of the cutting tool to the cutting zone of the workpiece, each shaft of the cutting mechanism is equipped with a link rigidly connected to it and forming a kinematic connection with the cutting tool shaft. In this case, the cutting discs located in the same plane make a circular motion with a radius equal to the eccentricity shoulder, which determines the cutting zone, which coincides with the cross section of the workpiece.

By expanding each eccentricity shoulder by a certain angle relative to the workpiece being cut, while cutting wheels are rotated around the respective axes of the cutting mechanism shafts, the possibility of collision of cutting wheels both in the cutting zone and outside this zone is excluded, and each cutting zone of the cutting disk sequentially overlaps each other, which and provides cutting blanks.

Analysis of known technical solutions regarding mechanisms for cutting long workpieces allows us to conclude that the claimed technical solution is not known from the prior art, which indicates its compliance with the criterion of "novelty.

A preferred embodiment of the utility model is explained in more detail using the attached drawings:

FIG. 1 is a kinematic diagram of a device (for one cutting disc, section AA in FIG. 2); figure 2 - schematic view of the device in its original position, view of the cutting tool; fig.Z is a schematic view of the device when the shafts of the cutting mechanism are rotated 90 °, view of the cutting tool;

figure 4 - schematic view of the device is the same when the rotation of the shafts of the cutting mechanism 180 °, view of the cutting tool;

5 is a schematic view of the device the same when turning the shafts of the cutting mechanism by 270 °, view of the cutting tool.

A device for cutting a long workpiece, intended, in particular, for cutting pipes, contains installed in the housing 1 symmetrically relative to the cut pipe 2 with the possibility of simultaneous rotation about its axis shafts 3 of the cutting mechanism, shafts 4 of the cutting tool, each of which is installed in parallel, at a distance a given eccentricity arm e corresponding to the shaft 3 of the cutting mechanism. Each shaft 3 of the cutting mechanism is equipped with a link made in the form of riages 5, rigidly mounted on the shafts 3 of the cutting mechanism, rotating in the bearing units 6, and form a kinematic connection with the shaft 4 of the cutting tool through the bearing units 7. The cutting tool 8 is made in the form of detachable milling cutters 8, 8, 8, located in the same plane and fixedly mounted on the shafts 4 of the cutting tool, the drive 9 of the cutting mechanism, the drive 10 of the cutting tool 8, the mechanism (not shown) of the pipe clamp 2. Each eccentricity arm e is deployed UTO, respectively, by the angle Ui, aa, az. In this example, these angles are formed by the intersection of the extension line of each eccentricity arm e with the vertical axis of the pipe 2.

The device operates as follows. The clamping mechanism captures the pipe 2, preventing its movement relative to the housing 1 during the introduction of the cutting tool 8 and the cut. Moreover, according to FIG. 2, in the initial position, the cutters 8, 8, 8 occupy a different position relative to the pipe being cut, determined by the angles ai, 0.2, з For cutting, the shafts 3 of the cutting mechanism are simultaneously driven by the drive 9, turning around their axis in bearing units 6, and shafts 4 of the cutting tool with detachable cutters 8, 8, drive 10, rotating in the bearing units 7.

When turning the shafts 3 of the cutting mechanism around their axis, the latter, using levers 5 connected to the cutting tool shaft 4, feed the cutting tool 8 into the cutting zone. According to FIG. 3, when the shafts 3 of the cutting mechanism are rotated by 90 °, the introduction of the rotating first detachable cutter 8 into the pipe body 2 takes place, then the aforementioned tool resembles its cutting zone, continuing the turning movement. At the same time, the second cutting mill 8 is rotated relative to the axis of the corresponding shaft 3 of the cutting mechanism, approaching the pipe 2, while the third cutting mill 8 with a lag from the second also approaches the cut pipe 2.

Figure 4 reflects that with a further rotation of the shafts by another 90 ° (180 ° in total), a rotating second cutting mill 8 is introduced into the pipe body, making the cut, passes its cutting zone and partially overlaps the cutting zone of the first cutter 8.

Finally, from FIG. Figure 5 shows that with a further rotation of the shafts by another 90 ° (a total of 270 °), a rotating third cutting mill 8 is introduced into the pipe body 2, passing its cutting zone and partially overlapping the cutting zones of the first and second cutting mills 8, completes the cut. The shafts 3 of the cutting mechanism make a complete rotation around their axis, the cutting mills 8, 8, 8 occupy the initial position at which each eccentricity arm e is turned to the corresponding angle ai, aa, az relative to the axis of the pipe being cut. The next cycle of feeding, clamping and cutting the pipe is carried out in the same sequence.

The possibility of using the inventive device for cutting a lengthy workpiece allows you to make an entry about its compliance with the criterion "industrial applicability.

Thus, the proposed technical solution provides the following technical advantages: increasing the reliability of the device by simplifying the design, expanding the technological capabilities of the device, complementing the arsenal of existing tools for this purpose.

Claims (1)

A device for cutting a long workpiece, including cutter shafts installed in the housing symmetrically with respect to the cut workpiece with the possibility of simultaneous rotation of the cutting mechanism shafts with a cutting tool around its axis, a cutting tool made in the form of cutting discs according to the number of cutter shafts located at a distance of a given eccentricity arm relative to the shafts cutting mechanism and located in one plane, cutting mechanism drive, cutting tool drive, workpiece clamping mechanism, different I mean that the cutting tool drive is equipped with cutting tool shafts, each of which is installed in parallel, at a distance of a given eccentricity shoulder, corresponding to the cutting mechanism shaft, equipped with a link rigidly connected to it and forming a kinematic connection with the cutting tool shaft, while the cutting discs are fixed on the drive shafts of the cutting tool, and each eccentricity arm is angled relative to the workpiece being cut, allowing the cutting discs to sequentially cut.