RU187002U1 - MACHINE FOR PREPARATION OF TAPE WOODWORKING SAWS - Google Patents

Abstract

The utility model relates to devices for preparing band saws used in the sawmill and woodworking industry. The technical task of the utility model is to expand its technological capabilities, reduce the overall dimensions of the machine. The machine for preparing band saws also contains a sharpening mechanism, which includes two stepper motors moreover, in the sharpening mode, the saw moves one tooth step from the stepper motor, and the grinding wheel is fed in The height of the tooth is carried out by a stepper motor. 2 ill.

Description

The utility model relates to devices for preparing band saws used in the sawmill and woodworking industry, and can be used for rolling blades, as well as for profile sharpening of the teeth of band saws.

Known serial machines for rolling band saws: PV-20M, PV-35, VP-210 Mebor, STDM-1. These analogues contain two milling rollers, a saw-based mechanism, a roller drive mechanism, a hydraulic cylinder to create a milling roller pressure. The disadvantages of these machines is that the prepared saw is located horizontally, and therefore they have large overall dimensions, due to the size of the band saw. Another drawback of these machines is the lack of a sharpening mechanism.

Known serial machines for sharpening band saws: TchL6-2, Vollmer liliput-Senior. The machines contain a bed, a sharpening head, a cam saw feed mechanism, a saw base, which allows the sharpened saw to be positioned vertically. The disadvantages of these machines is that the cam saw feed mechanism allows you to sharpen the teeth of only one profile. Another drawback of these machines is the lack of a mechanism for rolling the saw blade.

The closest technical solution selected by the applicant as a prototype is a machine for the preparation of band saws described in the patent for the invention of the Russian Federation No. 2548181, publ. 04/20/2013, containing a small-diameter roller, deforming a tape forming two branches with a certain force F, a large-diameter roller, a rolling tape, a tension pulley. Rolling is as follows. The prepared tape is installed with a certain tension on the roller and idler pulley. Further, the tape moves along the roller and pulley at a certain speed, a small-diameter roller acts on the outer surface of the tape with a certain force, while moving along the width of the tape.

The technical task of the utility model is to expand its technological capabilities, reduce the overall dimensions of the machine.

The technical result achieved in the implementation of the utility model is to reduce the overall dimensions of the machine, the ability to perform two operations in preparing a band saw: rolling the blade and sharpening teeth, the possibility of sharpening teeth of various profiles.

The problem is solved in that the machine for the preparation of band saws contains a bed and a lower pulley, an upper idler pulley, a saw drive mechanism, a rolling mechanism including two milling rollers and a roller clamp cylinder, characterized in that it is equipped with a sharpening mechanism including a feed support on which a grinding wheel with a drive motor is mounted, a helical gear and a stepper motor for feeding the grinding wheel along the height of the tooth, while saw water consists of a stepper motor and a gear belt drive for moving the saw one step of the tooth.

Comparison of the claimed technical solution with the prototype shows that it differs in the following features:

the machine is equipped with a sharpening mechanism;

the sharpening mechanism comprises a feed support, on which a grinding wheel with a drive motor is mounted;

the sharpening mechanism comprises a helical gear;

the sharpening mechanism comprises a stepper motor;

the saw drive mechanism consists of a stepper motor and a gear belt drive for moving the saw one step of the tooth.

Therefore, we can assume that the claimed utility model meets the criterion of "novelty."

The utility model can be manufactured on standard equipment, so it meets the criterion of "industrial applicability".

Figure 1 shows a diagram of a machine for the preparation of band saws. Figure 2 shows the band saw sharpening mechanism.

The machine consists of a bed 1, the upper tensioning pulley 2 and the lower 3 pulleys mounted on it, a sharpening mechanism, a saw rolling mechanism and a saw drive mechanism. A band saw 4 is mounted on the pulleys. To change the distance between the pulleys 2 and 3, there is a helical gear 23 and a handwheel 22.

The sharpening mechanism is located on the right branch of the band saw and includes a grinding wheel feed 13 for the height of the tooth, a hand wheel for adjusting the front grinding angle 11, screw gear 12. A grinding wheel 24 is located on the support 13, with a drive motor 5, a stepper motor 10, a helical gear 25 .

The rolling mechanism is located on the left branch of the band saw and includes a hydraulic cylinder 14, two milling rollers 15 and 16, a support roller 17, a handwheel 18 for adjusting the position of the movable roller 16, helical gear 19, handwheel 20, for changing the position of the support roller 17, helical gear 21 .

The saw drive mechanism consists of a stepper motor 6, a toothed belt drive including pulleys 7 and 8, a toothed belt 9.

The machine works as follows:

The prepared band saw 4 is mounted on the pulleys 2 and 3. Rotating the handwheel 22, using the screw gear 23, moves the upper idler pulley 2. This adjusts the length of the saw and ensures its tension.

In rolling mode, the stepper motor 6 rotates with a given constant frequency. Rotation from the pulley 7, through the toothed belt 9, is transmitted to the pulley 8, which is located on the same shaft with the lower drive pulley 3. This ensures the translational movement of the saw. The necessary clamping of the rolling rollers 15 and 16 is provided by the hydraulic cylinder 14. The machine is configured for a new rolling track by moving the saw 4 relative to the rollers 15 and 16, and relative to the pulleys 2 and 3. For this, there is a support roller 17, which is moved by rotating the handwheel 20 through a screw gear 21 .

In the sharpening mode, rotation from the electric motor 5 is transmitted to the grinding wheel 24. The reciprocating movement of the grinding wheel 24 relative to the tooth of the saw 4 is carried out from the stepper motor 10 through the screw gear 25. The saw is fed to one tooth from the stepping motor 6 from the stepping motor 6 through the toothed belt transmission: pulleys 7 and 8, toothed belt 9. The operation of the stepper motors 6 and 10 is coordinated in such a way that while grinding the tooth along the front face, the engine 6 does not rotate and the saw is stationary. Upon reaching the grinding wheel 24 of the interdental cavity, the engine 6 begins to move the saw, and the engine 10 begins to rotate in the opposite direction. The grinding wheel 24 moves along the path of the rear face of the saw tooth. The size of the front angle of sharpening the tooth of the saw is adjusted by turning the support 13, the handwheel 11, through the helical gear 12. Thus, the coordinated operation of the stepper motors 6 and 10 ensures the sharpening of the teeth of the saw of various shapes, different angular parameters, different pitch and different cutting depths.

Thus, the claimed utility model allows to perform two operations on the machine, while the layout of the machine allows to reduce its dimensions during design.

Claims (1)

A machine for preparing band saws containing a bed and a lower pulley, an upper idler pulley, a saw drive mechanism, a rolling mechanism including two milling rollers and a roller clamp cylinder, characterized in that it is equipped with a sharpening mechanism including a feed support which has a grinding wheel with a drive motor, a helical gear and a stepper motor for feeding the grinding wheel along the height of the tooth, while the saw drive mechanism consists of a step electric odvigatelya and toothed belt drive for moving the saw blade tooth by one step.

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