Distance-adjustable numerical control double-head precision saw

Abstract

The utility model provides a distance-adjustable numerical control double-head precision saw which comprises a frame, a first saw head assembly, a second saw head assembly, a first feeding assembly, a second feeding assembly and a third driving motor. Through cooperation of the movable feeding assembly II and the saw head assembly I, the convenience of adjusting the distance between the saw head assembly I and the saw head assembly II can be greatly improved, and through arrangement of the feeding assembly I and the feeding assembly II, through cooperation of a driving motor III, a driving belt and a driving rod, materials to be machined can be automatically pushed at a constant speed; the cutting error caused by manual pushing of the materials is avoided, the material cutting quality can be improved, the first material pressing piece and the second material pressing piece press the materials through the multiple pressing wheels by means of elastic potential energy of the springs, the inclination probability of the materials is reduced when the materials are cut, and then the material cutting uniformity is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cutting equipment, and particularly relates to a digitally controlled double-head precision saw with adjustable spacing. Background Art

[0002] CNC double-head precision saw, also known as CNC double-head cutting machine, is a cutting equipment used for processing metal, plastic, wood and other materials. It adopts CNC technology to control the movement and cutting speed of the tool through pre-programmed instructions to achieve high-precision and high-efficiency cutting operations. The equipment usually has two cutting heads that can be operated independently, located on the left and right sides respectively. They can cut the workpiece simultaneously or separately, greatly improving production efficiency. The double-head design also enables the equipment to cut different sizes or angles at the same time, adapting to workpieces of different shapes and sizes.

[0003] Some CNC double-head precision saws may require complicated operation steps or special tools when adjusting the spacing. This may increase the complexity of the operation and the time-consuming adjustment, and reduce production efficiency. Therefore, we hope to design a CNC double-head precision saw with a new structure to solve this problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a CNC double-head precision saw with adjustable spacing to solve the problems raised in the above-mentioned background technology.

[0005] The utility model is realized by the following technical scheme: a CNC double-head precision saw with adjustable spacing, comprising: a frame, a saw head assembly 1, a saw head assembly 2, a feeding assembly 1, a feeding assembly 2 and a driving motor 3, wherein the saw head assembly 2 is installed at the left end inside the frame, the feeding assembly 1 is movably installed at the upper end of the frame, the lower end of the feeding assembly is fixedly connected to the left side of the upper end of the saw head assembly, the saw head assembly 1 is movably installed inside the frame through the feeding assembly 1, the driving motor 3 is installed at the left rear side inside the frame, and the feeding assembly 2 is fixed at the upper left end of the frame;

[0006] A crank adjustment screw is installed on the front upper side of the frame, and a driving rod is rotatably installed on the rear upper side of the frame through a bearing seat. The feeding assembly 1 includes a synchronous feeding piece 1 and a pressing piece 1, and the synchronous feeding piece 1 is located directly below the pressing piece 1;

[0007] The second feeding component comprises a second synchronous feeding piece and a second pressing piece, and the second synchronous feeding piece is located directly below the second pressing piece.

[0008] As a preferred embodiment, a guide rod 1 is installed on the upper side of the front end of the frame, and the height of the guide rod 1 is smaller than the crank adjustment screw rod. A guide rod 2 is installed on the upper side of the rear end of the frame, and the guide rod 2 is located directly below the driving rod. The specifications of the guide rod 2 are the same as those of the guide rod 1, and the height of the guide rod 1 is flush with the height of the guide rod 2.

[0009] As a preferred embodiment, the saw head assembly 1 comprises a mounting frame 1, a circular saw 1 and a driving member 1, wherein the driving member 1 is mounted on the right side of the mounting frame 1, and the circular saw 1 is rotatably mounted on the left side of the upper end of the mounting frame 1 through the driving member 1;

[0010] The saw head assembly 2 includes a mounting frame 2, a circular saw 2 and a driving member 2. The driving member 2 is installed on the left side of the mounting frame 2, and the circular saw 2 is rotatably installed on the right side of the upper end of the mounting frame 1 through the driving member 2. The structure of the saw head assembly 1 is mirror-set to the structure of the saw head assembly 2, and the size specification of the saw head assembly 1 is the same as the size specification of the saw head assembly 2.

[0011] As a preferred embodiment, the middle of the lower surface of the synchronous feeding piece is welded to the left side of the upper end of the mounting frame one, the lower surface of the synchronous feeding piece two is welded to the right side of the upper end of the mounting frame two, the lower end of the pressing piece is fixedly connected to the right rear side of the upper end of the mounting frame one by bolts, and the lower end of the pressing piece two is fixedly connected to the left rear side of the upper end of the mounting frame two by bolts, the structure of the pressing piece one is mirrored to the structure of the pressing piece two, and the size specification of the pressing piece one is the same as the size specification of the pressing piece two.

[0012] As a preferred embodiment, the pressing piece 1 includes a support frame, a spring, a mounting rod and a wheel frame, the wheel frame is movably mounted on the front end of the support frame through the mounting rod, a spring is mounted on the outside of the mounting rod, the spring is placed between the lower surface of the front end of the support frame and the upper surface of the wheel frame, and a plurality of equally spaced pressing wheels are rotatably mounted inside the lower end of the wheel frame. In actual use, the feeding component 2 has two more slides and one nut than the feeding component 1, and the rest of the structure and size are the same. The feeding component 2 is movably mounted on the upper side of the frame through the slide and the nut, while the feeding component 1 is welded to the upper side of the left end of the frame.

[0013] As a preferred embodiment, the specifications of the synchronous feeding component 1 are the same as those of the synchronous feeding component 2, and the synchronous feeding component 2 includes a groove shell, a driven sprocket, a chain and a diamond bearing, and the rear end of the groove shell is slidably connected to the driving rod through the diamond bearing and the shaft sleeve, and the driving rod crosses the rear end of the groove shell;

[0014] A driven sprocket is installed at the rear end of the tank shell through a driving rod and a shaft sleeve, and a driven sprocket is rotatably installed at the front end of the tank shell through a short shaft and a diamond bearing. A chain is rotatably installed between the two driven sprockets, and the chain does not directly contact the tank shell, and the height of the upper end of the chain is greater than the height of the upper end of the tank shell. The upper end, front end and rear end of the tank shell are all open.

[0015] A sliding seat is fixed on the lower side of the front end and the lower side of the rear end of the trough shell, and the trough shell is slidably connected to the guide rod one and the guide rod two through the two sliding seats respectively. A nut is fixed on the front side of the lower surface of the trough shell, and the lower side of the front end of the trough shell is movably connected to the crank adjustment screw through the nut. In actual use, in order to ensure the accuracy of adjusting the spacing, scale lines can be set on the front surface of the upper end of the frame, and the accuracy of the scale lines can be set according to actual use requirements. A benchmark plate is set on the front side of the lower surface of the trough shell of the feeding component two, and the benchmark plate is slidably connected to the upper front surface. In this way, the specific value of the adjustment spacing can be understood in detail, which helps to improve the adjustment accuracy. The above-mentioned crank handle adjustment screw is a hand-held ball screw kit, which uses a ball screw to adjust the spacing between the saw head component one and the saw head component two, which is not only simple to adjust, but also helps to improve the adjustment accuracy.

[0016] As a preferred embodiment, the left side of the driving rod is connected to the power of the output end of the driving motor through a pulley and a driving belt, the lower surface of the second synchronous feeding component is welded on the upper side of the left end of the frame, and the rear end of the second synchronous feeding component is rotatably connected to the left end of the driving rod. In actual use, the rear end of the slot shell in the second feeding component is rotatably and slidingly connected to the driving rod through a diamond bearing. After the saw head component is adjusted, since the sleeve is mounted on the outside of the driving rod, the rear end of the slot shell is rotatably connected to the sleeve through a diamond bearing, and the driven sprocket at the rear end of the driven slot shell is fixed in the middle of the sleeve. Screws can be used to fix the sleeve to the driving rod on both sides of the driven sprocket. In this way, when the driving rod rotates, it drives the driven sprocket to rotate, and the slot shell will not interfere with it. When it needs to be moved, just loosen the corresponding screws to slide the sleeve on the driving rod.

[0017] After adopting the above technical solution, the beneficial effects of the utility model are: by setting the crank handle to adjust the screw rod, in conjunction with the movable feeding assembly 2 and the saw head assembly 1, the convenience of adjusting the distance between the saw head assembly 1 and the saw head assembly 2 can be greatly improved;

[0018] The setting of feeding component one and feeding component two, in conjunction with drive motor three, drive belt and drive rod, can automatically advance the material to be processed at a uniform speed, avoid cutting errors caused by manual advancement of materials, and help improve the quality of material cutting. Pressing piece one and pressing piece two rely on the elastic potential energy of the spring to press the material through multiple pressing wheels, so as to reduce the chance of tilting during cutting, thereby improving the uniformity of material cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 The utility model is a schematic diagram of the overall structure of a CNC double-head precision saw with adjustable spacing.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of a side view of a CNC double-head precision saw with adjustable spacing according to the utility model.

[0022] Figure 3 It is a schematic diagram of the rear-view three-dimensional structure of a CNC double-head precision saw with adjustable spacing according to the utility model.

[0023] Figure 4 It is a schematic diagram of a structure of a material pressing piece of a CNC double-head precision saw with adjustable spacing according to the utility model.

[0024] Figure 5 for Figure 3 A is an enlarged schematic diagram.

[0025] In the figure, 100-frame, 110-handle adjustment screw, 120-guide rod 1, 130-guide rod 2, 140-driving rod;

[0026] 200 - saw head assembly 1, 210 - mounting frame 1, 220 - circular saw 1, 230 - driving member 1;

[0027] 300 - saw head assembly 2, 310 - driving member 2, 320 - mounting frame 2, 330 - circular saw 2;

[0028] 400-feeding assembly 1, 410-synchronous feeding component 1, 420-pressing component 1, 421-support frame, 422-spring, 423-mounting rod, 424-pressing wheel, 425-wheel frame;

[0029] 500-feeding component 2, 510-synchronous feeding component 2, 511-sliding seat, 512-groove shell, 513-driven sprocket, 514-chain, 515-diamond bearing, 520-pressing component 2;

[0030] 600-driving motor 3, 610-driving belt. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figures 1 to 5 The utility model provides a technical solution: a CNC double-head precision saw with adjustable spacing, comprising: a frame 100, a saw head assembly 200, a saw head assembly 300, a feeding assembly 400, a feeding assembly 500 and a driving motor 600, a saw head assembly 300 is installed at the left end of the frame 100, a feeding assembly 400 is movably installed at the upper end of the frame 100, a lower end of the feeding assembly 400 is fixedly connected to the left side of the upper end of the saw head assembly, the saw head assembly 200 is movably installed in the frame 100 through the feeding assembly 400, a driving motor 600 is installed at the left rear side of the frame 100, and a feeding assembly 500 is fixed at the upper left end of the frame 100;

[0033] A crank adjustment screw rod 110 is installed on the front upper side of the frame 100, and a driving rod 140 is rotatably installed on the rear upper side of the frame 100 through a bearing seat. The feeding assembly 400 includes a synchronous feeding piece 410 and a pressing piece 420, and the synchronous feeding piece 410 is located directly below the pressing piece 420;

[0034] The second feeding assembly 500 includes a second synchronous feeding component 510 and a second pressing component 520 , wherein the second synchronous feeding component 510 is located directly below the second pressing component 520 .

[0035] See also Figures 1 to 3 A guide rod 120 is installed on the upper side of the front end of the frame 100, and the height of the guide rod 120 is smaller than the crank adjustment screw 110. A guide rod 2 130 is installed on the upper side of the rear end of the frame 100. The guide rod 2 130 is located directly below the driving rod 140. The specifications of the guide rod 2 130 are the same as those of the guide rod 120, and the height of the guide rod 120 is flush with the height of the guide rod 2 130.

[0036] The saw head assembly 200 includes a mounting frame 210, a circular saw 220 and a driving member 230. The driving member 230 is installed on the right side of the mounting frame 210, and the circular saw 220 is rotatably installed on the left side of the upper end of the mounting frame 210 through the driving member 230.

[0037] The saw head assembly 2 300 includes a mounting frame 2 320, a circular saw 2 330 and a driving member 2 310. The driving member 2 310 is installed on the left side of the mounting frame 2 320, and the circular saw 2 330 is rotatably installed on the right side of the upper end of the mounting frame 1 210 through the driving member 2 310. The structure of the saw head assembly 1 200 is mirrored to the structure of the saw head assembly 2 300, and the size specifications of the saw head assembly 1 200 are the same as the size specifications of the saw head assembly 2 300.

[0038] The middle of the lower surface of the synchronous feeding piece 410 is welded to the left side of the upper end of the mounting frame 210, the lower surface of the synchronous feeding piece 510 is welded to the right side of the upper end of the mounting frame 320, the lower end of the pressing piece 420 is fixedly connected to the right rear side of the upper end of the mounting frame 210 by bolts, the lower end of the pressing piece 520 is fixedly connected to the left rear side of the upper end of the mounting frame 320 by bolts, the structure of the pressing piece 420 is mirrored to the structure of the pressing piece 520, and the size specifications of the pressing piece 420 are the same as the size specifications of the pressing piece 520.

[0039] The pressing piece 420 includes a support frame 421, a spring 422, a mounting rod 423 and a wheel frame 425. The wheel frame 425 is movably mounted on the front end of the support frame 421 through the mounting rod 423. A spring 422 is mounted on the outer side of the mounting rod 423. The spring 422 is placed between the lower surface of the front end of the support frame 421 and the upper surface of the wheel frame 425. A plurality of pressing wheels 424 with equal spacing are rotatably mounted inside the lower end of the wheel frame 425. In actual use, the feeding component 2 500 has two more slides 511 and a nut than the feeding component 1 400. The rest of the structure and size are the same. The feeding component 2 500 is movably mounted on the upper side of the frame 100 through the slide 511 and the nut, while the feeding component 1 400 is welded to the upper side of the left end of the frame 100.

[0040] As the first embodiment of the utility model, in actual use, if the user needs to adjust the spacing between the saw head assembly 1 200 and the saw head assembly 2 300, the user now loosens the screw on the shaft sleeve, and then the user shakes the handle to adjust the screw rod 110. As the handle adjusts the screw rod 110, the nut on the lower side of the front end of the synchronous feeding component 2 510 moves left or right under the drive of the handle to adjust the screw rod 110. Since the entire synchronous feeding component 2 510 is slidably mounted on the upper side of the guide rod 1 120 and the guide rod 2 130 through two slide seats 511, and the saw head assembly 1 200 is fixedly connected to the synchronous feeding component 2 510, under the push of the nut, the entire synchronous feeding component 2 500 drives the saw head assembly 1 200 to move synchronously to the left or right. After adjusting to the desired spacing, the user stops turning the handle to adjust the screw rod 110, and then tightens the screw on the shaft sleeve.

[0041] By setting a crank adjustment screw rod 110, in conjunction with the movable feeding assembly 2 500 and the saw head assembly 1 200, the convenience of adjusting the distance between the saw head assembly 1 200 and the saw head assembly 2 300 can be greatly improved.

[0042] See also Figures 4 to 5 The specifications of the synchronous loading component 1 410 are the same as those of the synchronous loading component 2 510. The synchronous loading component 2 510 includes a groove shell 512, a driven sprocket 513, a chain 514 and a diamond bearing 515. The rear end of the groove shell 512 is slidably connected to the driving rod 140 through the diamond bearing 515 and the sleeve. The driving rod 140 crosses the rear end of the groove shell 512.

[0043] A driven sprocket 513 is installed at the rear end of the tank shell 512 through a driving rod 140 and a shaft sleeve. A driven sprocket 513 is rotatably installed at the front end of the tank shell 512 through a short shaft and a diamond bearing 515. A chain 514 is rotatably installed between the two driven sprockets 513. The chain 514 does not directly contact the tank shell 512, and the height of the upper end of the chain 514 is greater than the height of the upper end of the tank shell 512. The upper end, front end and rear end of the tank shell 512 are all designed to be open.

[0044] A slide seat 511 is fixed to the lower side of the front end and the lower side of the rear end of the slot shell 512. The slot shell 512 is slidably connected to the guide rod 120 and the guide rod 2 130 respectively through the two slide seats 511. A nut is fixed to the front side of the lower surface of the slot shell 512. The lower side of the front end of the slot shell 512 is movably connected to the crank adjustment screw rod 110 through the nut. In actual use, in order to ensure the accuracy of the adjustment spacing, scale lines can be set on the front surface of the upper end of the frame 100. The accuracy of the scale lines can be set according to actual use requirements. A benchmark plate is set on the front side of the lower surface of the slot shell 512 of the feeding component 2 500, and the benchmark plate is slidably connected to the upper front surface. In this way, the specific value of the adjustment spacing can be understood in detail, which helps to improve the adjustment accuracy. The crank adjustment screw rod 110 mentioned above is a hand-held ball screw kit, which uses a ball screw to adjust the spacing between the saw head component 1 200 and the saw head component 2 300, which is not only easy to adjust, but also helps to improve the adjustment accuracy.

[0045] The left side of the driving rod 140 is connected to the power output end of the driving motor through a pulley and a driving belt 610. The lower surface of the synchronous loading part 2 510 is welded on the upper side of the left end of the frame 100. The rear end of the synchronous loading part 2 510 is rotatably connected to the left end of the driving rod 140. In actual use, the rear end of the groove shell 512 in the loading component 2 500 is rotatably and slidingly connected to the driving rod 140 through a diamond bearing 515. After the saw head component 1 200 is adjusted, since the sleeve is mounted on the outside of the driving rod 140, the rear end of the groove shell 512 is rotatably connected to the sleeve through the diamond bearing 515, and the driven sprocket 513 at the rear end of the driven groove shell 512 is fixed in the middle of the sleeve. Screws can be used to fix the sleeve and the driving rod 140 on both sides of the driven sprocket 513. In this way, when the driving rod 140 rotates, it drives the driven sprocket 513 to rotate, and the groove shell 512 will not interfere with it. When it needs to be moved, just loosen the corresponding screws to slide the sleeve on the driving rod 140.

[0046] As the second embodiment of the utility model, based on the above-mentioned first embodiment, the setting of the feeding component 1 400 and the feeding component 2 500, in conjunction with the driving motor 3 600, the driving belt 610 and the driving rod 140, can automatically and evenly advance the material to be processed, avoiding the cutting error caused by manual advancement of the material, which helps to improve the quality of material cutting. The pressing piece 1 420 and the pressing piece 2 520 rely on the elastic potential energy of the spring 422 to press the material through multiple pressing wheels 424, so that when cutting, the probability of tilting is reduced, thereby improving the uniformity of material cutting.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A CNC double-head precision saw with adjustable spacing, comprising: A frame (100), a saw head assembly 1 (200), a saw head assembly 2 (300), a loading assembly 1 (400), a loading assembly 2 (500) and a driving motor 3 (600), characterized in that the saw head assembly 2 (300) is installed at the left end inside the frame (100), the loading assembly 1 (400) is movably installed at the upper end of the frame (100), the lower end of the loading assembly 1 (400) is fixedly connected to the left side of the upper end of the saw head assembly, the saw head assembly 1 (200) is movably installed inside the frame (100) through the loading assembly 1 (400), the driving motor 3 (600) is installed at the left rear side inside the frame (100), and the loading assembly 2 (500) is fixed to the upper left end of the frame (100); A crank adjustment screw rod (110) is installed on the front upper side of the frame (100), and a driving rod (140) is rotatably installed on the rear upper side of the frame (100) through a bearing seat. The feeding assembly (400) includes a synchronous feeding piece (410) and a pressing piece (420), and the synchronous feeding piece (410) is located directly below the pressing piece (420); The second feeding assembly (500) comprises a second synchronous feeding component (510) and a second pressing component (520), wherein the second synchronous feeding component (510) is located directly below the second pressing component (520).

2. A CNC double-head precision saw with adjustable spacing as claimed in claim 1, characterized in that: A guide rod 1 (120) is installed on the upper side of the front end of the frame (100), and the height of the guide rod 1 (120) is smaller than the crank adjustment screw rod (110). A guide rod 2 (130) is installed on the upper side of the rear end of the frame (100), and the guide rod 2 (130) is located directly below the driving rod (140). The specifications of the guide rod 2 (130) are the same as those of the guide rod 1 (120), and the height of the guide rod 1 (120) is flush with the height of the guide rod 2 (130).

3. A CNC double-head precision saw with adjustable spacing as claimed in claim 2, characterized in that: The saw head assembly (200) comprises a mounting frame (210), a circular saw (220) and a driving member (230), wherein the driving member (230) is installed on the right side of the mounting frame (210), and the circular saw (220) is rotatably installed on the left side of the upper end of the mounting frame (210) through the driving member (230); The saw head assembly 2 (300) comprises a mounting frame 2 (320), a circular saw 2 (330) and a driving member 2 (310). The driving member 2 (310) is installed on the left side of the mounting frame 2 (320). The circular saw 2 (330) is rotatably installed on the right side of the upper end of the mounting frame 1 (210) through the driving member 2 (310). The structure of the saw head assembly 1 (200) is mirror-imaged to the structure of the saw head assembly 2 (300). The size specification of the saw head assembly 1 (200) is the same as the size specification of the saw head assembly 2 (300).

4. A CNC double-head precision saw with adjustable spacing as claimed in claim 3, characterized in that: The middle of the lower surface of the synchronous feeding piece 1 (410) is welded to the left side of the upper end of the mounting frame 1 (210), and the lower surface of the synchronous feeding piece 2 (510) is welded to the right side of the upper end of the mounting frame 2 (320). The lower end of the pressing piece 1 (420) is fixedly connected to the right rear side of the upper end of the mounting frame 1 (210) by bolts, and the lower end of the pressing piece 2 (520) is fixedly connected to the left rear side of the upper end of the mounting frame 2 (320) by bolts. The structure of the pressing piece 1 (420) is mirrored to the structure of the pressing piece 2 (520), and the size specification of the pressing piece 1 (420) is the same as the size specification of the pressing piece 2 (520).

5. A CNC double-head precision saw with adjustable spacing as claimed in claim 4, characterized in that: The pressing piece (420) comprises a support frame (421), a spring (422), a mounting rod (423) and a wheel frame (425); the wheel frame (425) is movably mounted at the front end of the support frame (421) via the mounting rod (423); a spring (422) is sleeved on the outer side of the mounting rod (423); the spring (422) is placed between the lower surface of the front end of the support frame (421) and the upper surface of the wheel frame (425); a plurality of pressing wheels (424) equidistantly distributed are rotatably mounted inside the lower end of the wheel frame (425).

6. A CNC double-head precision saw with adjustable spacing as claimed in claim 5, characterized in that: The specifications of the synchronous loading component 1 (410) are the same as those of the synchronous loading component 2 (510). The synchronous loading component 2 (510) comprises a groove shell (512), a driven sprocket (513), a chain (514) and a diamond bearing (515). The rear end of the groove shell (512) is slidably connected to the driving rod (140) through the diamond bearing (515) and a shaft sleeve. The driving rod (140) crosses the rear end of the groove shell (512). A driven sprocket (513) is installed at the rear end of the tank shell (512) through a driving rod (140) and a shaft sleeve, and a driven sprocket (513) is rotatably installed at the front end of the tank shell (512) through a short shaft and a diamond bearing (515). A chain (514) is rotatably installed between the two driven sprockets (513), and the chain (514) is not in direct contact with the tank shell (512), and the height of the upper end of the chain (514) is greater than the height of the upper end of the tank shell (512). The upper end, front end and rear end of the tank shell (512) are all designed to be open; A slide seat (511) is fixed to the lower side of the front end and the lower side of the rear end of the slot shell (512); the slot shell (512) is slidably connected to the guide rod 1 (120) and the guide rod 2 (130) respectively through the two slide seats (511); a nut is fixed to the front side of the lower surface of the slot shell (512); the lower side of the front end of the slot shell (512) is movably connected to the crank adjustment screw rod (110) through the nut.

7. A CNC double-head precision saw with adjustable spacing as claimed in claim 6, characterized in that: The left side of the driving rod (140) is connected to the output end of the driving motor through a pulley and a driving belt (610). The lower surface of the second synchronous loading component (510) is welded to the upper side of the left end of the frame (100). The rear end of the second synchronous loading component (510) is connected to the left end of the driving rod (140) in a rotationally connected manner.

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