A handheld metal cutting machine for hardware processing

Abstract

The present invention relates to the field of handheld metal cutting machines, and in particular to a handheld metal cutting machine for hardware processing, including a housing and a cutting blade, etc. Before cutting a large-volume metal-treated object, the handheld metal cutting machine for hardware processing of the present invention can complete the first cutting and the second cutting in sequence in a vertical direction of the metal-treated object under the restriction of the moving direction of the sliding clamping assembly when the operator controls the cutting machine to cut the metal-treated object. During this process, the sliding clamping assembly can hold the metal piece to be cut, and at the same time, the cutting machine slowly cuts toward the metal-treated object, which can greatly reduce the friction overheating of the metal-treated object during the cutting process and the burning phenomenon of the cutting surface. The technical problem that the operator cannot easily control the propulsion operation of the cutting machine when the handheld cutting machine is used to cut a large-volume metal-treated object and the metal-treated object appears crooked and has burning marks is solved.

Description

Technical Field

[0001] The invention relates to the field of handheld metal cutting machines, in particular to a handheld metal cutting machine for hardware processing. Background Art

[0002] In hardware processing, operators generally use handheld cutting machines to cut metal columns and metal plates of different sizes. After fixing the metal object on the vise, the handheld cutting machine can be directly used to aim at the part to be cut of the metal object to complete the cutting work in one step. When it is necessary to cut a larger metal object, the operator needs to hold the cutting machine by hand and move it along the part to be cut of the large metal object. In this process, it is difficult for the operator to control the propulsion direction and propulsion force of the cutting machine. When the operator pushes the cutting machine to deviate in the forward direction, the cutting machine will have serious cutting deviation and even serious shaking of the cutting blade. When the operator pushes the cutting machine forward with great force, the cutting blade of the cutting machine will be overheated by friction. When the overheated cutting blade rubs on the cutting surface of the metal object, it will cause obvious burning marks on the cutting surface of the metal object, resulting in waste of metal materials. Summary of the invention

[0003] In order to overcome the disadvantage that when an operator uses a handheld cutting machine to cut a large volume of metal processing objects, the operator has difficulty in controlling the propulsion operation of the cutting machine, resulting in crooked cutting and burn marks on the metal processing objects, the present invention provides a handheld metal cutting machine for hardware processing.

[0004] A handheld metal cutting machine for hardware processing of the present invention comprises a casing, a cutting blade, a driving motor, a main grip arm, a rotating rod, a first torsion spring, an arc-shaped slider, a transverse track and a sliding clamping assembly; a cutting blade is rotatably connected in the casing; a driving motor for driving the cutting blade to rotate is installed on the casing; a main grip arm is fixedly connected to the casing; a rotating rod is rotatably connected to the main grip arm; a first torsion spring is commonly fixedly connected between the rotating rod and the main grip arm; an arc-shaped slider is slidably connected to the casing, and the arc-shaped slider is configured as an arc structure with an opening facing the left side; the rotating rod is fixedly connected to the arc-shaped slider; a guide channel structure for guiding sparks generated by cutting forward is provided in the arc-shaped slider; a transverse track is fixedly connected to the casing; a sliding clamping assembly for clamping a metal column is commonly connected between the main grip arm and the transverse track.

[0005] As a preferred technical solution of the present invention, the arc-shaped sliding block is fixedly connected with a flat-bottom pressing block, and the lower surface of the flat-bottom pressing block is flush with the lower surface of the casing.

[0006] As a preferred technical solution of the present invention, the flat bottom pressing block is fixedly connected with a side grip arm.

[0007] As a preferred technical solution of the present invention, the sliding clamping assembly includes a side slider, a tension spring, a sliding rod, a distance-adjusting screw, a first clamping block, a second clamping block, a reduction motor and a driving gear; the side slider is slidably connected to the transverse track; a tension spring is fixedly connected between the side slider and the transverse track; the side slider is slidably connected to the sliding rod; the distance-adjusting screw is rotatably connected to the sliding rod; the distance-adjusting screw is screwed to the side slider through a threaded structure; the side slider is connected to the first clamping block; the sliding rod is connected to the second clamping block; a reduction motor is installed on the main grip arm; the output shaft of the reduction motor is fixedly connected to the driving gear; a bar tooth structure adapted to the driving gear structure is provided on the side slider; the driving gear is meshed with the bar tooth structure of the side slider.

[0008] As a preferred technical solution of the present invention, the first clamp is connected to the side slider via a rotating shaft; a second torsion spring is fixedly connected between the first clamp and the side slider; the second clamp is connected to the slide rod via a rotating shaft; a second torsion spring is also fixedly connected between the second clamp and the slide rod.

[0009] As a preferred technical solution of the present invention, an anti-slip pad is fixedly connected to the facing sides of the first clamping block and the second clamping block.

[0010] As a preferred technical solution of the present invention, a waste inlet channel structure is provided on the flat-bottom pressing block; and a waste discharge channel structure connected to the waste inlet channel is provided on the flat-bottom pressing block.

[0011] As a preferred technical solution of the present invention, the waste discharge channel of the flat-bottomed pressing block is configured as a structure inclined toward the rear and upward.

[0012] As a preferred technical solution of the present invention, the flat-bottom pressing block is fixedly connected to the flat-bottom guiding rod, and the bottom of the flat-bottom guiding rod is flush with the bottom of the flat-bottom pressing block.

[0013] As a preferred technical solution of the present invention, a locking block is slidably connected to the housing, and the locking block is made of a rubber material with damping friction; the locking block is provided with a bayonet structure with an opening toward the side edge of the arc-shaped slider.

[0014] The present invention relates to a hand-held metal cutting machine for hardware processing. A cutting blade is arranged in a machine casing. A sliding clamping assembly is also arranged on a transverse track of the machine casing. Before the cutting blade cuts a large-volume metal processing object, the sliding clamping assembly is first clamped on one side of the part of the metal processing object to be cut. When the operator controls the cutting machine to cut the metal processing object, the first cutting can be completed in a vertical direction of the metal processing object under the restriction of the moving direction between the sliding clamping assembly and the transverse track. After that, the operator turns over the cutting machine. When the second cutting is completed in a vertical direction of the metal processing object according to the above steps, the cutting blade is prevented from cutting crookedly. The sliding clamping assembly can keep the metal piece to be cut clamped. , to avoid uneven cutting surface of the metal-treated object. During this process, the cutting machine slowly cuts towards the metal-treated object under the control of the reduction motor and the tension spring, which can greatly reduce the friction overheating of the metal-treated object during the cutting process and the burning phenomenon of the cutting surface. At the same time, the arc-shaped slider can be close to the metal-treated object through the guide channel structure to discharge the generated sparks outward in time, avoiding the sparks directly spraying on the surface of the metal-treated object to produce serious burning marks; it solves the technical problem that when the operator uses a hand-held cutting machine to cut large-volume metal-treated objects, the operator is difficult to control the propulsion operation of the cutting machine, resulting in crooked cutting and burning marks on the metal-treated objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of a first stereoscopic viewing angle of the present invention;

[0016] Figure 2 is a schematic diagram of a second stereoscopic viewing angle of the present invention;

[0017] Figure 3 It is a schematic diagram of the arc-shaped slider of the present invention;

[0018] Figure 4 An exploded view of the sliding clamping assembly of the present invention;

[0019] Figure 5 This is a diagram showing the first clamping block and the second clamping block in a flipping state of the present invention;

[0020] Figure 6 It is a cross-sectional view of a flat-bottomed pressing block of the present invention;

[0021] Figure 7 It is a schematic diagram of the locking block structure of the present invention;

[0022] Figure 8 This is a diagram showing the first cutting state of the metal column of the present invention;

[0023] Fig. 9 This is a diagram showing the second cutting state of the metal column of the present invention;

[0024] Fig.10 It is a metal plate cutting state diagram of the present invention.

[0025] Markings in the figure: 1- housing, 11- cutting blade, 12- driving motor, 2- main grip arm, 21- rotating rod, 22- first torsion spring, 23- arc-shaped slider, 2301- guide channel, 24- flat-bottom pressure block, 2401- waste inlet channel, 2402- waste outlet channel, 25- side grip arm, 26- flat-bottom guide rod, 3- transverse track, 31- side slider, 3101- bar tooth, 32- tension spring, 33- slide rod, 34- pitch-adjusting screw, 35- first clamping block, 36- second clamping block, 37- second torsion spring, 38- anti-skid pad, 391- reduction motor, 392- driving gear, 4- locking block, 5- metal column, 6- metal plate. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope and application scope of the present invention are not limited.

[0027] Example 1

[0028] A handheld metal cutting machine for hardware processing, hereinafter referred to as the cutting machine, such as Figure 1-Figure 5 As shown, it includes a housing 1, a cutting blade 11, a driving motor 12, a main gripping arm 2, a rotating rod 21, a first torsion spring 22, an arc-shaped slider 23, a flat-bottomed pressure block 24, a side gripping arm 25, a transverse track 3 and a sliding clamping assembly; the cutting blade 11 is rotatably connected in the housing 1; the driving motor 12 is installed on the housing 1; the output shaft of the driving motor 12 is fixedly connected to the cutting blade 11; the housing 1 is bolted with the main gripping arm 2; the main gripping arm 2 is rotatably connected with the rotating rod 21; the first torsion spring 22 is fixedly connected between the rotating rod 21 and the main gripping arm 2; the housing 1 An arc-shaped slider 23 is connected to the upper slide, and the arc-shaped slider 23 is set to a circular arc structure with an opening facing the left side; the rotary rod 21 is bolted to the arc-shaped slider 23; a guide channel 2301 structure is opened in the arc-shaped slider 23; a flat-bottom pressure block 24 is fixed to the left side of the arc-shaped slider 23, and the lower surface of the flat-bottom pressure block 24 is flush with the lower surface of the casing 1; a side grip arm 25 is bolted to the front and rear sides of the flat-bottom pressure block 24; a transverse track 3 is bolted to the casing 1; a sliding clamping assembly is commonly connected between the main grip arm 2 and the transverse track 3.

[0029] like Figure 3-Figure 5As shown, the sliding clamping assembly includes a side slider 31, a tension spring 32, a slide rod 33, a pitch-adjusting screw rod 34, a first clamp block 35, a second clamp block 36, a second torsion spring 37, an anti-slip pad 38, a reduction motor 391 and a driving gear 392; the side slider 31 is slidably connected to the transverse track 3; the tension spring 32 is fixedly connected between the side slider 31 and the transverse track 3; the slide rod 33 is slidably connected to the side slider 31; the pitch-adjusting screw rod 34 is rotatably connected to the slide rod 33; the pitch-adjusting screw rod 34 is screwed to the side slider 31 through a threaded structure; the first clamp block is rotatably connected to the lower side slider 31 through a rotating shaft 35; a second clamp block 36 is rotatably connected to the lower side of the slide bar 33 through a rotating shaft; two second torsion springs 37 are fixedly connected between the first clamp block 35 and the side slide bar 31; two second torsion springs 37 are also fixedly connected between the second clamp block 36 and the slide bar 33; an anti-slip pad 38 is fixedly connected to the opposite sides of the first clamp block 35 and the second clamp block 36; a reduction motor 391 is installed on the main grip arm 2; a driving gear 392 is fixedly connected to the output shaft of the reduction motor 391; a bar tooth 3101 structure is provided on the side slide bar 31; the driving gear 392 is meshed with the bar tooth 3101 structure of the side slide bar 31.

[0030] When the cutting machine needs to cut the metal column 5, after the operator clamps the metal column 5 on the external clamp, the operator first pulls out the side slider 31 and the sliding rod 33, the first clamp block 35 and the second clamp block 36 connected thereto, and the side slider 31 drives the tension spring 32 to stretch to generate deformation elastic force, and at the same time flips the first clamp block 35 and the second clamp block 36 downward, so that the first clamp block 35 and the second clamp block 36 are as shown in FIG. Figure 5 The operator rotates the pitch adjusting screw 34 to drive the slide bar 33 and the second clamping block 36 connected thereto to slide outwards, as shown in the downward flipping state. Figure 8 As shown, the first clamping block 35 and the second clamping block 36 can be clamped on the outer surface of the metal column 5 through two anti-slip pads 38 respectively, and the cutting blade 11 of the cutting machine is aligned perpendicular to the surface of the metal column 5 and at the upper right of the part to be cut of the metal column 5.

[0031] Then the operator holds the main grip arm 2 and the side grip arm 25 with both hands to control the cutting machine, and turns on the driving motor 12 to drive the cutting blade 11 to rotate counterclockwise at the forward viewing angle. At this time, the stretched tension spring 32 exerts a traction force to the left on the cutting machine under the action of the deformation elastic force generated by it. When the operator holds the cutting machine, he only needs to rely on the traction force to slowly push the cutting machine toward the metal column 5, so that the side slider 31 is in a reverse retracted movement state relative to the transverse track 3. At the same time, the output shaft of the reduction motor 391 drives the driving gear 392 to rotate slowly, and the driving gear 392 engages the bar tooth 3101 structure of the side slider 31, driving the side slider 31 to slowly retract relative to the transverse track 3, effectively slowing down the moving speed of the cutting machine toward the metal column 5, and under the movement direction restriction of the side slider 31 and the transverse track 3, the cutting machine The cutting blade 11 will maintain a vertical state and perform slow cutting on the metal column 5 to prevent the cutting blade 11 from cutting crookedly due to cutting offset, and the cutting machine slowly cuts toward the metal column 5, which can greatly reduce the friction overheating of the metal column 5 during the cutting process and the burning of the cutting surface. At the same time, the arc-shaped slider 23 is blocked by the metal column 5 at the lower end, which drives the rotating rod 21 and the first torsion spring 22 to flip to the upper left. The sparks generated by the cutting at the bottom of the cutting blade 11 will enter the lower inlet end of the guide channel 2301 of the arc-shaped slider 23, and fly out along the guide channel 2301 to the upper front outlet end, avoiding the sparks from directly spraying on the operator. After the cutting blade 11 leaves the metal column 5 to the left, the first cutting groove structure can be cut above the metal column 5, so that the metal part to be cut will appear on the front side of the first cutting groove of the metal column 5.

[0032] After that, the operator loosens the reverse rotation pitch-adjusting screw 34 to loosen the first clamping block 35 and the second clamping block 36 from the metal column 5, and the operator turns the cutting machine up and down to turn the exposed part of the cutting blade 11 from the original lower left state to the upper left state, and then pulls out the side slider 31 and the sliding rod 33 connected thereto, the first clamping block 35 and the second clamping block 36, and the side slider 31 drives the tension spring 32 to stretch again to generate deformation elastic force, and rotates the pitch-adjusting screw 34 to clamp the first clamping block 35 and the second clamping block 36 on the outer surface of the metal column 5 through the two anti-slip pads 38 again. Fig. 9 As shown, at this time, the first clamp 35 and the second clamp 36 will be clamped on the metal piece to be cut off on the front side of the metal column 5, and the operator will then control the cutting machine according to the above steps to drive the cutting blade 11 to maintain a vertical state, and perform a second cutting groove cutting on the metal column 5 based on the first cutting groove of the metal column 5. At this time, the metal piece can be completely cut off from the metal column 5 body.

[0033] At the later stage of the cutting work of the cutting blade 11 for cutting the metal column 5 for the second cutting groove, only a small area of ​​the connection portion is retained between the metal part and the main body of the metal column 5. When the metal part is not clamped by the first clamp block 35 and the second clamp block 36, the metal part will cause irregular natural fractures in the small area of ​​the connection portion under the action of its own gravity. At this time, the cutting surface of the metal column 5 will be seriously incomplete. In the present embodiment, the metal part is in a state of being clamped by the first clamp block 35 and the second clamp block 36 during the cutting work of the second cutting groove. Therefore, the connection portion of the metal part will not undergo the above-mentioned natural fracture phenomenon, and the connection portion between the metal part and the main body of the metal column 5 will be directly and completely cut off by the cutting blade 11, thereby ensuring that the cutting surface of the metal column 5 has a complete planar structure.

[0034] Example 2

[0035] The difference between this embodiment and embodiment 1 is that Figure 1-Figure 6 As shown, a waste inlet channel 2401 structure is provided on the upper side of the flat-bottom pressing block 24 of the present embodiment; a waste discharge channel 2402 structure connected to the waste inlet channel 2401 is provided on the rear side of the flat-bottom pressing block 24; the waste discharge channel 2402 of the flat-bottom pressing block 24 is configured to be inclined toward the rear and upward; a flat-bottom guide rod 26 is welded to the front and rear sides of the flat-bottom pressing block 24, and the bottom of the flat-bottom guide rod 26 is flush with the bottom of the flat-bottom pressing block 24.

[0036] When the cutting machine needs to cut the metal plate 6, after the operator clamps the metal plate 6 on the external clamp, the operator holds the cutting machine and places the bottom of the flat-bottomed pressing block 24 and the two flat-bottomed guide rods 26 on the surface of the metal plate 6. Fig.10 As shown, the cutting blade 11 is directed toward the portion of the metal plate 6 to be cut, and the lower end of the arc-shaped slider 23 is against the side of the metal plate 6. Then, the operator turns on the driving motor 12 to drive the cutting blade 11 to cut the metal plate 6. The sparks generated by the cutting at the bottom of the cutting blade 11 will enter the lower inlet end of the guide channel 2301 of the arc-shaped slider 23, and fly out to the upper and forward outlet end along the guide channel 2301 to avoid the sparks directly spraying on the operator. At the same time, the operator pushes the cutting machine to slowly move forward along the portion of the metal plate 6 to be cut by holding the main grip arm 2 and the side grip arm 25 to continue cutting. During the forward movement of the cutting machine, the two flat-bottomed guide rods 26 remain close to the surface of the metal plate 6, so that the cutting machine is supported on both sides of the two flat-bottomed guide rods 26, and it is not easy for the cutting machine to deviate to one side, resulting in a vertical tilt on the cutting surface. In addition, the operator can observe whether the flat-bottomed guide rod 26 and the cutting line of the metal plate 6 remain parallel, and judge whether the cutting machine has a horizontal deviation in the left and right directions.

[0037] At this time, the first clamp block 35 and the second clamp block 36 remain parallel to the side slider 31. When the cutting machine needs to cut the metal plate 6, the first clamp block 35 and the second clamp block 36 are higher than the surface height of the metal plate 6, so that when the cutting machine is cutting the metal plate 6, the first clamp block 35 and the second clamp block 36 will not contact the surface of the metal plate 6 and cause interference.

[0038] At the same time, the arc-shaped slider 23 is blocked by the metal plate 6 and will continue to drive the rotating rod 21 and the first torsion spring 22 to rotate forward and upward until the original upper side of the arc-shaped slider 23 is flipped forward and downward to be close to the flat-bottom pressing block 24, so that the outlet end of the arc-shaped slider 23 is directly connected to the waste inlet channel 2401 of the flat-bottom pressing block 24. After the sparks flying out from the outlet end of the guide channel 2301 of the arc-shaped slider 23 enter the flat-bottom pressing block 24 through the waste inlet channel 2401, the sparks directly fly backward and upward along the waste discharge channel 2402 of the flat-bottom pressing block 24, avoiding the sparks from being sprayed onto the surface of the metal plate 6 over a large area, causing the metal plate 6 to be burned by the sparks over a large area, thereby providing spark splashing protection to the metal plate 6 and the operator at the same time.

[0039] Example 3

[0040] The difference between this embodiment and embodiment 1 is that Figure 1-Figure 7 As shown, a locking block 4 structure is slidably connected to the casing 1 of this embodiment, and a damping strip for generating sliding friction on the locking block 4 is further provided in the casing 1, and the locking block 4 is made of a rubber material with damping friction; a bayonet structure with an opening toward the side edge of the arc-shaped slider 23 is provided on the locking block 4; a plurality of locking groove structures adapted to the structure of the locking block 4 are provided on the arc-shaped slider 23, and when the operator drives the cutting machine to flip and adjust in various directions, the locking block 4 in the initial state will not slide toward the side edge of the arc-shaped slider 23 by itself due to the friction of the damping strip.

[0041] When the cutting machine needs to continuously and quickly cut multiple parts of a small metal part, since the arc-shaped slider 23 wraps a large range of the lower part of the cutting blade 11 in the initial state, and the lower exposed area of ​​the cutting blade 11 is small, it is not easy for the operator to directly align the lower exposed part of the cutting blade 11 with the small metal part for cutting. Therefore, the operator needs to first rotate the arc-shaped slider 23 upward from the casing 1 to increase the lower exposed area of ​​the cutting blade 11, and then slide the locking block 4 to clamp its bayonet structure on the side edge of the arc-shaped slider 23, so that the arc-shaped slider 23 is locked by the locking block 4 and remains in an upwardly flipped state, and the cutting blade 11 also maintains a large lower exposed area. Then the operator can control the cutting machine to directly align the lower exposed part of the cutting blade 11 with the various positions to be cut on the small metal part, and start The dynamic drive motor 12 drives the cutting blade 11 to continuously and quickly cut multiple parts of small metal parts, thereby improving the cutting efficiency of small metal parts. When the operator controls the cutting machine to quickly cut small metal parts from back to front, when the arc-shaped slider 23 is not fully flipped upward, causing the lower side of the arc-shaped slider 23 to hit the small metal part forward, since the sliding lock block 4 provides a clamping force to the arc-shaped slider 23 through the friction force of the rubber material, when the arc-shaped slider 23 is subjected to a large thrust, it can slide relative to the sliding lock block 4, so that when the arc-shaped slider 23 moving forward is blocked by the small metal part, the arc-shaped slider 23 can be pushed upward by the small metal part, so that the arc-shaped slider 23 can smoothly pass through the small metal part forward without the small metal part blocking the movement of the arc-shaped slider 23.

[0042] When the cutting machine is cutting the metal plate 6, the operator pushes the cutting machine to slowly move forward along the part to be cut of the metal plate 6 to continue cutting. The arc-shaped slider 23 is blocked by the metal plate 6 and will continue to drive the rotary rod 21 and the first torsion spring 22 to rotate forward and upward. When the original front upper outlet end of the guide channel 2301 of the arc-shaped slider 23 is flipped to face the front lower side, the sparks flying out of the outlet end of the guide channel 2301 of the arc-shaped slider 23 will directly spray onto the surface of the metal plate 6, causing the surface of the metal plate 6 to be burned by the continuously sprayed sparks. At this time, the operator first turns off the drive motor 12, and the operator directly flips the arc-shaped slider 23 forward until the original front upper outlet end of the arc-shaped slider 23 is flipped to face the front lower side. The upper side portion is flipped forward and downward to be close to the flat-bottom pressing block 24, so that the outlet end of the arc-shaped slider 23 is directly connected to the waste inlet channel 2401 of the flat-bottom pressing block 24, and the operator then slides the locking block 4 to insert it into the adjacent locking groove in the arc-shaped slider 23, so that the arc-shaped slider 23 is locked by the locking block 4 and remains in a state of being close to the flat-bottom pressing block 24. Then the operator starts the driving motor 12 again to drive the cutting blade 11 to cut the metal plate 6. The sparks flying out from the outlet end of the guide channel 2301 of the arc-shaped slider 23 will successively fly out backward and upward through the waste inlet channel 2401 and the waste discharge channel 2402 of the flat-bottom pressing block 24, thereby providing spark splashing protection for the metal plate 6 and the operator at the same time.

[0043] The above description is only an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included in the protection scope of the present invention. The contents not elaborated in detail in the present invention belong to the existing technologies known to those skilled in the art.

Claims

1. A handheld metal cutting machine for hardware processing, comprising: a housing (1); A cutting blade (11) is rotatably connected inside the housing (1); a driving motor (12) for driving the cutting blade (11) to rotate is mounted on the housing (1); and a main grip arm (2) is fixedly connected to the housing (1); Features: The invention comprises a rotary rod (21), a first torsion spring (22), an arc-shaped slider (23), a transverse track (3) and a sliding clamping assembly; the rotary rod (21) is rotatably connected to the main gripping arm (2); the first torsion spring (22) is fixedly connected between the rotary rod (21) and the main gripping arm (2); the arc-shaped slider (23) is slidably connected to the housing (1), and the arc-shaped slider (23) is configured as an arc structure with an opening facing the left side; the rotary rod (21) is fixedly connected to the arc-shaped slider (23); a guide channel (2301) structure for guiding sparks generated by cutting forward is provided in the arc-shaped slider (23); the transverse track (3) is fixedly connected to the housing (1); a sliding clamping assembly for clamping a metal column (5) is connectedly connected between the main gripping arm (2) and the transverse track (3); The sliding clamping assembly comprises a side slider (31), a tension spring (32), a slide rod (33), a pitch adjusting screw rod (34), a first clamping block (35), a second clamping block (36), a reduction motor (391) and a driving gear (392); the side slider (31) is slidably connected to the transverse track (3); a tension spring (32) is fixedly connected between the side slider (31) and the transverse track (3); the slide rod (33) is slidably connected to the side slider (31); the pitch adjusting screw rod (34) is rotatably connected to the slide rod (33); 4); the pitch-adjusting screw rod (34) is screwed to the side slider (31) through a threaded structure; the side slider (31) is connected to a first clamping block (35); the slide bar (33) is connected to a second clamping block (36); a reduction motor (391) is mounted on the main grip arm (2); the output shaft of the reduction motor (391) is fixedly connected to a driving gear (392); a bar-shaped tooth (3101) structure is provided on the side slider (31); and the driving gear (392) is meshed with the bar-shaped tooth (3101) structure of the side slider (31).

2. A handheld metal cutting machine for hardware processing according to claim 1, characterized in that: A flat-bottom pressing block (24) is fixedly connected to the casing (1), and the lower surface of the flat-bottom pressing block (24) is flush with the lower surface of the casing (1).

3. The handheld metal cutting machine for hardware processing according to claim 1, characterized in that: The flat bottom pressing block (24) is fixedly connected with a side grip arm (25).

4. The handheld metal cutting machine for hardware processing according to claim 1, characterized in that: The first clamping block (35) is rotatably connected to the side slider (31) via a rotating shaft; a second torsion spring (37) is fixedly connected between the first clamping block (35) and the side slider (31); the second clamping block (36) is rotatably connected to the slide bar (33) via a rotating shaft; a second torsion spring (37) is also fixedly connected between the second clamping block (36) and the slide bar (33).

5. The handheld metal cutting machine for hardware processing according to claim 1, characterized in that: An anti-slip pad (38) is fixedly connected to the facing sides of the first clamping block (35) and the second clamping block (36).

6. The handheld metal cutting machine for hardware processing according to claim 1, characterized in that: A waste inlet channel (2401) structure is provided on the flat-bottomed pressing block (24); and a waste outlet channel (2402) structure connected to the waste inlet channel (2401) is provided on the flat-bottomed pressing block (24).

7. The handheld metal cutting machine for hardware processing according to claim 6, characterized in that: The waste discharge channel (2402) of the flat-bottomed pressing block (24) is configured as a structure inclined upward and backward.

8. The handheld metal cutting machine for hardware processing according to claim 1, characterized in that: The flat bottom pressing block (24) is fixedly connected to the flat bottom guide rod (26), and the bottom of the flat bottom guide rod (26) is flush with the bottom of the flat bottom pressing block (24).

9. A handheld metal cutting machine for hardware processing according to any one of claims 1 to 8, characterized in that: A locking block (4) is slidably connected to the housing (1), and the locking block (4) is made of rubber material; the locking block (4) is provided with a bayonet structure with an opening facing the arc-shaped sliding block (23).

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