Forward and reverse rotation control structure of cutting machine

Abstract

The utility model discloses a cutting machine positive and negative rotation control structure which comprises a cutting machine main machine, a protective cover is detachably installed at the front end of the cutting machine main machine, a housing located behind the protective cover is installed at the front end of the cutting machine main machine, and a Hall plate is fixed in the housing. A magnet close to the Hall plate is fixed on the outer wall of the rear end of the protective cover; a forward rotation indicating lamp and a reverse rotation indicating lamp are installed on the top of the cutting machine main machine. Through arrangement of the Hall plate and the magnet, automatic adjustment of forward and reverse rotation of the motor can be realized, and manual adjustment of forward and reverse rotation of the motor is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to cutting machine technical field, specifically is a cutting machine positive and negative rotation control structure. BACKGROUND

[0002] In the existing cutting machine technical field, cutting machine as a kind of multifunctional electric tool, is widely used in metal processing, wood cutting, stone carving and a variety of operation scenes.For the flexibility and practicality of tool, many cutting machine designs allow users to remove its protective cover, convert cutting machine into angle grinder to use, to adapt to different processing needs.This design not only saves the purchase cost, but also improves work efficiency, so that single tool can meet the diversified operation requirements.

[0003] However, in actual operation process, there are significant differences between the working characteristics of cutting machine and angle grinder, especially their different requirements for rotation direction.In cutting operation, the cutting efficiency of saw blade and the quality of cutting surface often depend on the specific rotation direction of saw blade clockwise or counterclockwise, which depends on the nature of material, the planning of cutting path and the required cutting effect.On the contrary, when cutting machine is converted into angle grinder, the rotation direction of grinding disc depends more on the operation habit, abrasive type and the characteristics of the surface to be processed, sometimes it needs to be opposite to the rotation direction when cutting to achieve the best grinding effect.

[0004] Because the traditional cutting machine does not fully consider the motor forward and reverse rotation demand in the conversion process when designing, users usually need to manually adjust the motor forward and reverse rotation (such as designing a motor forward and reverse rotation button, pressing the forward and reverse rotation button to realize the motor forward and reverse rotation) when switching from cutting mode to angle grinding mode.This process is not only tedious and time-consuming, but also increases the operation complexity, and frequent manual adjustment also reduces the work efficiency and affects the user experience. INVENTION CONTENTS

[0005] In view of the defects of the above prior art, the purpose of the utility model is to provide a cutting machine forward and reverse rotation control structure.

[0006] The technical solution of the utility model is: cutting machine forward and reverse rotation control structure, including cutting machine host computer, cutting machine host computer front end is detachably installed with a protective cover, the front end of cutting machine host computer is installed with a cover shell located behind the protective cover, a hall board is fixed in the cover shell, a magnet is fixed on the rear end outer wall of the protective cover, which is close to the hall board.

[0007] Further, the magnet is located above the hall board.

[0008] Further, the rear end outer wall of the protective cover has a clamping groove, and the magnet is fixed in the clamping groove.

[0009] Further, the cutting machine host top is provided with a forward rotation indicating lamp and a reverse rotation indicating lamp.

[0010] The cutting machine forward and reverse rotation control structure has the advantages that when the protective cover is removed, the magnet is also removed, the Hall plate does not detect the magnet, and the motor reverses; when the protective cover is installed again, the Hall plate detects the magnet, and the motor rotates forward; and the forward and reverse rotation of the motor is automatically adjusted, and manual adjustment of the forward and reverse rotation of the motor is not needed. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a whole structure schematic view of the utility model;

[0012] Figure 2 It is a sectional view schematic view of the utility model;

[0013] Figure 3 It is an installation schematic view of the magnet and the protective cover of the utility model;

[0014] Figure 4 It is a principle block diagram of the utility model.

[0015] As shown in the figure: 1 - cutting machine host, 2 - protective cover, 21 - clamping groove, 3 - cover, 4 - Hall plate, 5 - magnet, 6 - forward rotation indicating lamp, 7 - reverse rotation indicating lamp, 8 - control unit, 9 - motor. DETAILED DESCRIPTION

[0016] In order to compare intuitive, complete understanding of the technical scheme of the utility model, now just combine the utility model drawings are as follows:

[0017] As shown in the figure: Figure 1 As shown in the figure: Figure 4 The cutting machine forward and reverse rotation control structure comprises a cutting machine host 1, the cutting machine host 1 is detachably provided with a protective cover 2 at the front end, the cutting machine host 1 is provided with a cover 3 located at the rear of the protective cover 2 at the front end, a Hall plate 4 is fixed in the cover 3, and a magnet 5 is fixed on the rear end outer wall of the protective cover 2 and arranged close to the Hall plate 4.The protective cover 2 and the cutting machine host 1 can be connected by screws, buckles or other detachable connection modes.

[0018] As shown in the figure: Figure 2 When the protective cover 2 is not removed, the magnet 5 is located above the Hall plate 4, and the Hall plate 4 can detect the magnet 5.

[0019] As shown in the figure: Figure 3 In order to facilitate the fixation of the magnet 5, the rear end outer wall of the protective cover 2 is provided with a clamping groove 21, and the magnet 5 is fixed in the clamping groove 21.

[0020] As shown in the figure: Figure 1As shown, the cutting machine host 1 top is provided with a forward rotation indicator 6 and a reverse rotation indicator 7, which can be used to indicate the motor 9 forward and reverse rotation.

[0021] As shown in the drawings, Figure 4 The cutting machine host 1 includes a control unit 8, a motor 9, a Hall plate 4, a forward rotation indicator 6, and a reverse rotation indicator 7, which are electrically connected to the control unit 8. The Hall plate 4 detects the magnet 5 signal and transmits it to the control unit 8, and the control unit 8 controls the motor 9 forward and reverse rotation.

[0022] The cutting machine forward and reverse rotation control structure provided by the utility model, when the protective cover 2 is removed, the magnet 5 is also removed, the Hall plate 4 does not detect the magnet 5, and the motor 9 reverses, when the protective cover 2 is installed again, the Hall plate 4 detects the magnet 5, and the motor 9 rotates forward, and the motor 9 forward and reverse rotation is automatically adjusted, without manually adjusting the motor 9 forward and reverse rotation.

[0023] Of course, the above is only a preferred embodiment of the utility model, and is not limited to the patent range of the utility model, and any simple modification and equivalent structural change of the utility model specification and drawings should be reasonably included in the patent protection range of the utility model.

Claims

1. A cutting machine forward and reverse rotation control structure, comprising a cutting machine main machine, a protective cover being detachably installed at a front end of the cutting machine main machine, characterized in that: The front end of the cutting machine mainframe is provided with a cover shell located behind the protective cover, and a Hall plate is fixed in the cover shell.

2. The machine according to claim 1, wherein: The magnet is located above the Hall plate.

3. The machine according to claim 1, wherein: The rear end outer wall of the protective cover is provided with a clamping groove, and the magnet is fixed in the clamping groove.

4. The machine according to claim 1, wherein: A forward rotation indicator lamp and a reverse rotation indicator lamp are installed on the top of the cutting machine mainframe.

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