Auxiliary device for reciprocating cutting tool and application method thereof

Abstract

The present invention discloses an auxiliary device for a reciprocating cutting tool and an application method thereof. The device comprises a reciprocating motion conversion mechanism, a baffle frame, a feed mechanism and a clutch assembly, which can realize automatic feeding and precise cutting of the workpiece. The power reference assembly and the swing assembly in the feed mechanism, as well as other components that cooperate therewith, work together to enable the saw blade to automatically and accurately cut the workpiece under the cutting motion of the reciprocating saw or the jigsaw. The feature of the device is that its design allows the size and number of teeth of the ratchet to be changed, so that the automatic feeding motion is as close to linear continuity as possible, which is crucial for improving cutting accuracy. At the same time, a clutch assembly is provided in the device, which can easily switch between manual and automatic feeding, thereby enhancing the convenience of operation. In addition, the device includes an unlocking component and a reverse movement prevention device, so that the reset operation after cutting and the safety of the workpiece can be guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of reciprocating saws, and in particular to an auxiliary device for a reciprocating cutting tool and an application method thereof. Background Art

[0002] Reciprocating saws and jigsaws are two essential woodworking tools, both based on a reciprocating motion. They are widely and frequently used in the woodworking industry. The advantages of reciprocating saws lie in their high-speed blade movement and powerful cutting capacity, making them particularly suitable for cutting large sections and high-density wood. This advantage is primarily due to their upward and downward force feed mechanism, which provides stable and powerful cutting force. Reciprocating saws demonstrate excellent performance and ideal cutting results when processing bars, boards, and other large timbers.

[0003] In contrast, a jigsaw has distinctly different characteristics. Its blade moves relatively slowly, making it more suitable for cutting small to medium-sized sections. When working with denser wood, jigsaws require greater force, resulting in a more demanding work environment. While its forward-pushing motion doesn't deliver the same cutting force as a reciprocating saw, it offers superior precision and accuracy.

[0004] To improve the cutting performance of both types of saws, reciprocating saws are often designed with a clamping device to secure the object being cut. For example, Chinese patent publication CN103785898B discloses a new type of reciprocating saw with a clamping device and a detachable baffle. Unlike the common practice of providing a positioning structure on the clamping device and the reciprocating saw body, this design fully utilizes the baffle, eliminating the need for additional components on the main body. Furthermore, this design facilitates the installation and removal of the clamping device, requiring only one hand, significantly improving efficiency.

[0005] However, with the continuous advancement of science and technology, the materials and structures of saw blades and the power of cutting power sources are constantly improving and increasing. Today's reciprocating saws and jigsaws are no longer limited to cutting wood, but can be used to cut metal materials such as aluminum and steel pipes. However, the existing improved clamping devices are mainly used to stabilize the cutting object, and do not give sufficient consideration to the precise feed rate control during the cutting process of metal materials, which may lead to safety risks during the cutting process. Therefore, the current cutting process still requires experienced and skilled operators to carry out, and there is still a risk of saw blades jumping teeth and breaking, and may even cause personal injury to the operator.

[0006] In summary, despite some improvements in the structure and performance of existing reciprocating and jigsaws, several key challenges remain. For example, when cutting metal materials, more precise control of feed rate to improve cutting accuracy and safety, as well as simplified operation to reduce reliance on operator skill and experience, are both pressing issues. These issues should be a primary focus of future research and development to further advance and improve reciprocating and jigsaw technology. Summary of the Invention

[0007] In response to the above-mentioned problems, the present invention provides an auxiliary device for a reciprocating cutting tool. The auxiliary device can be installed by adaptively modifying the linear drive shaft of a reciprocating saw or a jigsaw. After installation, the reciprocating saw or jigsaw can automatically feed while tightening the cutting object, and is particularly suitable for cutting metal parts. At the same time, it can also be easily switched to manual feeding, thereby enhancing operational flexibility, safety and cutting accuracy.

[0008] The object of the present invention is achieved through the following technical solutions: An auxiliary device for a reciprocating cutting tool, the device comprising: a reciprocating shaft in a reciprocating motion conversion mechanism of a reciprocating saw or a jigsaw, a saw blade being mounted on the free end of the reciprocating shaft by configuring a special component; a baffle frame fixedly connected to the reciprocating motion conversion mechanism; a feeding mechanism, the feeding mechanism comprising a power reference assembly connected to the power of the reciprocating shaft and a swing assembly connected to the power reference assembly, wherein the power reference assembly comprises a curved groove provided inside the reciprocating shaft and extending along the axis of the reciprocating shaft, a slide provided on the side wall of the curved groove, and a transmission pin which passes through a sliding stabilizing seat from bottom to top and enters the curved groove, the upper end of the transmission pin being provided with an arc-shaped protrusion which cooperates with the slide;

[0009] The swing assembly includes a forked frame having one end detachably connected to a transmission pin, a swing arm hingedly connected to the other end of the forked frame, which can be rotated and fixed to a pivot member of a reciprocating saw or jigsaw housing, and the other end of the swing arm is fixed to a side surface below the pivot center of the pivot member;

[0010] The feed mechanism also includes a feed pawl hinged on the pivot member and positioned above the pivot member connection point, and a ratchet wheel cooperating with the feed pawl, the ratchet wheel being rotatably connected to the interior of the baffle frame via a mounting shaft; a large gear coaxially connected to the ratchet wheel, a small gear meshing with the large gear, and a mounting seat fixed to the baffle frame for mounting the small gear; and a gear rod slidably mounted in the mounting seat and meshing with the small gear, the gear rod having at least one end fixedly connected to a clamp;

[0011] The structural design of the auxiliary device enables the saw blade to automatically feed and accurately cut the workpiece under the cutting motion of the reciprocating saw or the jigsaw.

[0012] Due to its unique structural design, this technical solution can effectively automatically feed and accurately cut the workpiece under the cutting motion of a reciprocating saw or a jigsaw, greatly improving the cutting efficiency and accuracy.

[0013] Preferably, the clamp includes a vertical clamp plate; a fixed clip secured to the vertical clamp plate and perpendicular to the saw blade; and a movable clip positioned parallel to the fixed clip with an adjustable distance. This technical solution enhances the clamp design, including both a fixed clip and a movable clip, enabling the clamp to accommodate workpieces of varying sizes and shapes, improving the adaptability and versatility of the device.

[0014] Preferably, the size and number of teeth of the ratchet wheel can be changed to make the automatic feeding motion as close to linear and continuous as possible. This technical solution proposes a design that can change the size and number of teeth of the ratchet wheel to make the automatic feeding motion as close to linear and continuous as possible, which can further improve the cutting accuracy and enhance the product quality.

[0015] Preferably, the swing arm is broken in the middle and has an opening and a shaft that extends into the opening, with a certain gap between the two. One end of the swing arm is provided with a rotatable switching nut, and the other end is provided with a thread that matches the nut. This technical solution adds an adjustable structure to the swing arm, making the feeding method more flexible, the operation more convenient, and improving work efficiency.

[0016] Preferably, the feed mechanism is equipped with a clutch assembly comprising a mounting shaft with a hollow splined shaft, a ratchet rotatably connected to the mounting shaft, and a driving ring gear fixedly attached to the side of the ratchet. This technical solution introduces a clutch assembly design that allows for manual or automatic feeding according to actual needs, providing more operational options and enhancing the flexibility of the device.

[0017] Preferably, the clutch assembly further includes a spline sleeve with external threads that slides with the outer surface of the spline shaft, a driven ring gear threadedly connected to the spline sleeve, and a pressure spring disposed between the driven ring gear and the adjacent large gear and sleeved on the outside of the spline shaft. This technical solution further improves the design of the clutch assembly and enhances the stability and reliability of the device.

[0018] Preferably, the spline shaft is provided with a waist hole corresponding to the position of the spline sleeve, and a thread is provided at the spline shaft mouth on one side of the push spring; a threaded unlocking component is provided at this thread, and the unlocking component includes an exposed rotating handle and an extension rod with one end extending into the interior of the spline shaft and the other end rotatably connected to the rotating handle; the end of the extension rod is provided with a radially protruding locking portion, and the inner ring of the spline sleeve is provided with a locking hole that cooperates with the locking portion. The design of this technical solution enables the equipment to be quickly and conveniently reset after cutting is completed, greatly improving work efficiency.

[0019] In view of the above problems, the present invention further provides a method for cutting using the aforementioned auxiliary device, comprising:

[0020] a. Place the workpiece on the device, and then select manual or automatic feeding by operating the clutch assembly and switching nut;

[0021] b. Prevent the workpiece from moving in the opposite direction during the cutting process;

[0022] c. After cutting is completed, the reset spring pushes the gear rod to reset the device;

[0023] d. After completing the reset, adjust the screw to release the control of the moving clamp, and then remove the workpiece that has been cut.

[0024] This technical solution proposes a method for cutting using the device, which can achieve efficient and precise cutting through a series of operating steps.

[0025] Preferably, the method includes using a monitoring system to monitor the equipment's operating status and cutting quality during the workpiece placement and cutting process. This technical solution adds the step of using a monitoring system to monitor the equipment's operating status and cutting quality, enabling intelligent management of the equipment and improving cutting accuracy and product quality.

[0026] Preferably, the step of preventing the workpiece from moving in reverse includes using an anti-rotation pawl. The design of this technical solution enables the device to prevent the workpiece from moving in reverse during the cutting process, thereby ensuring the accuracy and stability of the cutting.

[0027] Preferably, after the cutting is completed, the unlocking component in the clutch assembly separates the driving ring gear from the driven ring gear for easy reset. The design of this technical solution enables the device to be quickly and conveniently reset after the cutting is completed, greatly improving work efficiency.

[0028] Preferably, in the step of selecting manual or automatic feeding, if automatic feeding is selected, the size and number of teeth of the ratchet are changed so that the automatic feeding motion is as close to linear and continuous as possible. This technical solution further improves the design of the automatic feeding method. By changing the size and number of teeth of the ratchet, the automatic feeding motion is made as close to linear and continuous as possible, thereby further improving the cutting accuracy.

[0029] In summary, the present invention has the following advantages compared with the prior art:

[0030] Highly flexible: Through components such as the fixture plate, fixed clamp, movable clamp and adjustment screw, the device can adapt to workpieces of different shapes and sizes, making the cutting process highly flexible and greatly improving the versatility of cutting.

[0031] Manual / automatic feeding: Through the design of the clutch assembly and switching nut, the operator can choose manual or automatic feeding mode according to cutting requirements, achieving good operational adaptability and flexibility.

[0032] Accurate and stable cutting: During the cutting process, the device's pawl and anti-rotation pawl work together to prevent the workpiece from moving in the opposite direction, ensuring the accuracy and stability of the cutting and improving the cutting quality.

[0033] Simplified reset operation: Through the unlocking component and reset spring in the clutch assembly, the saw blade and workpiece can be quickly and conveniently reset after cutting is completed, which simplifies the reset operation and improves work efficiency.

[0034] Improve cutting quality: The device seat is equipped with a soft pad, which can reduce the friction between the workpiece and the device seat, reduce the vibration of the workpiece during the cutting process, further improve the cutting accuracy and stability, and thus improve the overall cutting quality.

[0035] Extending equipment life: The unlocking component in the clutch assembly separates the driving ring gear from the driven ring gear, allowing the saw blade to move freely. This not only reduces wear during equipment operation, but also reduces the complexity of resetting after cutting, thereby extending the service life of the equipment.

[0036] These advantages make the device show significant advantages in practical applications, providing a more efficient, more accurate and safer solution for cutting operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the structure of clamping a workpiece according to the present invention;

[0038] Figure 2 A schematic diagram of the clutch assembly explosion of the present invention;

[0039] Figure 3It is a schematic diagram of the partial structure of the linear drive shaft exploded and separated according to the present invention;

[0040] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle;

[0041] Figure 5 It is a structural diagram of the explosion separation of related parts between various components of the present invention;

[0042] Figure 6 It is a structural schematic diagram of another angle of clamping a workpiece according to the present invention.

[0043] Markings in the figure:

[0044] Reciprocating motion conversion mechanism 001, linear drive shaft 1, saw blade 002, aluminum alloy profile 003, sliding support seat 23, drive unit 30, baffle frame 2, support ear 21, vertical plate 22, upper slide 23, extension member 24, feed mechanism 3, power reference component 31, curved groove 311, slideway 312, transmission pin 313, arc-shaped protrusion 314, swing assembly 32, fork frame 321, swing arm 322, pivot member 323, switching nut 324, feed pawl 33, mounting shaft 34, ratchet 35, large gear 36, small gear 37, mounting seat 38, gear rod 39, fixture vertical plate 391, fixed clip 392, movable clip 393, long rod 394, fixed nut 395, adjusting nut 396, adjusting screw 397, clutch assembly 4, active ring gear 41, spline sleeve 42, driven ring gear 43, push spring 44, waist hole 45, unlocking component 46, rotating handle 461, extension rod 462, locking portion 463, return spring 5, anti-rotation pawl 6, cushion 7. DETAILED DESCRIPTION

[0045] The present invention will be further described below with reference to the embodiments shown in all the accompanying drawings:

[0046] Example 1

[0047] Refer to all attached Figure 1-6 The 2017 ...

[0048] This auxiliary device mainly consists of the following components:

[0049] Linear drive shaft 1: Installed in a reciprocating motion conversion mechanism 001 of a reciprocating saw or a jigsaw, and a saw blade 002 is installed at the free end.

[0050] Baffle frame 2: detachably connected to the reciprocating motion conversion mechanism 001, and extending from the connection position to one side of the saw blade 002.

[0051] The device also includes a feed mechanism 3, which comprises a power application assembly 31 and a swing assembly 32. The power application assembly 31 is dynamically connected to the linear drive shaft 1 and includes a curved groove 311, a slideway 312, and a drive pin 313 within the linear drive shaft 1. The upper end of the drive pin 313 is provided with an arc-shaped protrusion 314 that mates with the slideway 312.

[0052] The swing assembly 32 includes a fork frame 321 detachably connected to the transmission pin 313 , a swing arm 322 hinged to the other end of the fork frame 321 , and a pivot member 323 rotatable and fixed to the saw housing.

[0053] The device is further equipped with a feed pawl 33, which is hingedly connected to the pivot member 323, specifically at a position above the pivot connection point of the pivot member; a ratchet 35, which can rotate inside the baffle frame 2 via a mounting shaft 34 and cooperates with the feed pawl 33; and a large gear 36, a small gear 37, and a mounting seat 38, which are coaxially connected to the ratchet 35 and fixed to the baffle frame 2. In addition, the device is equipped with a gear rod 39 slidably mounted in the mounting seat 38, at least one end of which is fixedly connected to the clamp plate 391.

[0054] The device also features a fixed clip 392, perpendicular to the saw blade 002 and fixed to the fixture plate 391, and a movable clip 393, adjustable and lockable. These components are precisely designed and assembled, ensuring stability and precision during operation. In particular, the coordination between the fixture plate 391, the fixed clip 392, and the adjustable movable clip 393 ensures a stable position of the workpiece during the cutting process.

[0055] The working principle of the device is as follows: the movement of the linear drive shaft 1 drives the transmission pin 313 to move up and down, causing the swing arm 322 to swing, thereby pushing the feed pawl 33 to push and pull, and finally causing the ratchet 35 to rotate.

[0056] During the actual cutting process, after the workpiece is secured by the two clamps, linear drive shaft 1 begins to move, driving saw blade 002 to cut. Similarly, driven by linear drive shaft 1, drive pin 313 moves up and down. This motion is transmitted through swing assembly 32, which in turn drives ratchet 35 to rotate. The rotation of ratchet 35 rotates gear 36, which in turn rotates pinion 37. The rotation of pinion 37 further pushes rack 39 upward. Finally, rack 39 drives fixed clip 392 and movable clip 393 to push the workpiece toward saw blade 002, thereby completing the cutting process.

[0057] During the entire cutting process, the operator only needs to operate the reciprocating saw or jigsaw, which reduces the workload, while the stable feed rate also greatly improves the cutting effect.

[0058] In summary, this reciprocating saw auxiliary device, through its optimized structure and feed mechanism design, improves work efficiency, reduces operator workload, and enhances cutting quality. The entire cutting process is clear, simple, intuitive, and easy to operate, demonstrating broad application prospects and market potential.

[0059] The components of this device can be replaced or adjusted based on specific needs and usage scenarios. For example, key components such as the drive pin 313, swing arm 322, and ratchet 35 can be specifically designed based on the cutting requirements, load conditions, and the material being cut. The drive pin 313 and swing arm 322 can be made of different materials to meet various working environments and durability requirements. Furthermore, the design of the ratchet 35 can be adjusted based on the specific feed rate and force requirements.

[0060] The linear drive shaft 1 also has multiple optimization possibilities. For example, multiple different types of linear drive shafts can be designed to accommodate various types of saw blades and cutting tasks. In addition, the linear drive shaft 1 can also be designed to be detachable and replaceable for easy maintenance and replacement.

[0061] The design and optimization of these replaceable parts can improve the flexibility of the device and adapt to various cutting requirements while ensuring the stability and accuracy of the cutting process.

[0062] To further enhance workpiece stability, the large gear 36, small gear 37, mounting base 38, and toothed rod 39 are each designed with two sets of components, symmetrically distributed around the saw blade 002. This symmetrical design integrates the fixture upright 391, fixed clip 392, movable clip 393, and two mounting bases 38 into a single unit, effectively improving the stability of the device.

[0063] The baffle frame 2 includes two downwardly extending support ears 21 and a vertical plate 22. Both ears 21 are provided with coaxial through-holes to rotatably support the mounting shaft 34. To enhance feeding stability, an upper slide 23 is bolted to the upper end of the vertical plate 22. A through-hole is designed at each end of the upper slide 23 for the tight sliding of the gear rods 39. This ensures that each gear rod 39 is stably supported during movement.

[0064] Given that the ratchet provides intermittent feed, its feed rate is nonlinear. This nonlinear feed has little impact when cutting soft materials like wood and plastic. However, when cutting metal, a continuous feed rate is desirable. Therefore, by designing the size and number of teeth of ratchet 35, and properly aligning it with the swing assembly 32 and power reference assembly 31, the feed motion can be made as close to linear as possible.

[0065] In certain cutting scenarios, such as cutting small parts, stabilizing the saw body allows the operator to maintain a certain distance during the cutting process, thus ensuring greater safety. Therefore, an extension member 24 is added to the baffle frame 2. This extension member is preferably installed in a position where it can be removably fixed to the reciprocating motion conversion mechanism 001. By providing an external stabilizing member connected to the extension member, the saw body can be easily secured.

[0066] To switch between automatic and manual feed, a special swing arm 322 has been designed. It has an opening in the middle and a shaft that extends into the opening, with a certain distance between them. A rotatable switch nut 324 is mounted on one end of the swing arm, while the other end has matching threads. The switch nut 324 is partially exposed outside the saw housing, facilitating manual operation. When the two swing arms are connected via the switch nut 324, the swing arms regain a rigid connection, resuming efficient transmission.

[0067] We have also added a clutch assembly 4 to the feed mechanism 3 to switch between automatic and manual feed modes. The clutch assembly 4 includes replacing the mounting shaft 34 with a spline shaft having a hollow structure, and changing the ratchet 35 that was originally fixedly connected to the mounting shaft 34 to a rotatable connection. At the same time, a fixed active ring gear 41 is added to the side of the ratchet 35. The clutch assembly 4 also includes a spline sleeve 42 with an external thread that has a sliding fit with the outer surface of the spline shaft, a driven ring gear 43 that is threadedly connected to the spline sleeve 42, and a push spring 44 that is arranged between the driven ring gear 43 and the adjacent large gear 36 and is sleeved on the outside of the spline shaft. Under normal conditions, the push spring 44 pushes the driven ring gear 43 to a position that meshes with the active ring gear 41, so that the rotation of the ratchet 35 is transmitted to the spline shaft through the active ring gear 41 and the driven ring gear 43, thereby driving the large gear and other related transmission components to complete automatic feeding.

[0068] To facilitate the separation and connection of the driven ring gear 43, a hole 45 is designed on the spline shaft to correspond to the spline sleeve 42. Furthermore, threads are added to the spline shaft opening on one side of the push spring 44. A threaded unlocking component 46 is installed in this threaded portion. Unlocking component 46 consists of an exposed rotating handle 461 and a stretching rod 462, one end of which extends into the interior of the spline shaft and the other end is rotatably connected to the rotating handle 461. The end of the stretching rod 462 is designed with a radially protruding locking portion 463, and the inner side of the spline sleeve 42 is designed to cooperate with the locking portion 463. When the locking portion 463 is inserted into the slot of the spline sleeve 42 through the hole 45, rotating the handle 461 causes the stretching rod 462 to move in the direction of the threads, thereby driving the spline sleeve 42 and the driven ring gear 43 mounted thereon, achieving separation or connection with the driving ring gear 41.

[0069] The separation operation of the clutch assembly 4 has two purposes: one is that when cutting soft materials such as wood, the feed stability requirement is not large, and the workpiece is fixed externally. In this case, the mounting shaft 34 is not restricted by the ratchet 35, and the two clamps can clamp the workpiece normally. The operator can manually press down the body to cut; the second is that after the cutting is completed, the saw blade 002 needs to be reset. In order to better complete the reset operation, we have added a reset spring 5 between the upper slide 23 and the clamp stand 391. The reset spring 5 is sleeved on the outer periphery of the gear rod 39.

[0070] In order to improve the clamping effect, a soft pad 7 is added to the side of the movable clamping piece 393 facing the fixed clamping piece 392. This soft pad 7 can provide additional support, better protect the workpiece and improve the stability of the clamping.

[0071] The ratchet 35 and the feed pawl 33 cooperate to provide a one-way rotation drive, and the pawl has a non-return function. To enhance the non-return effect, an anti-rotation pawl 6 is added to prevent reverse rotation. The anti-rotation pawl 6 is hinged at a relatively lower position on the pivot member 323. This design can more effectively control the movement of the device when needed.

[0072] The movable clip 393 can be moved using any method known in the art, such as by slidably positioning the movable clip 393 on the fixture plate 391 via a track, and then using a bolt and nut structure to push a push block below the movable clip 393 to achieve displacement of the movable clip, thereby achieving the purpose of clamping the workpiece. The bolt and nut combination can also have a locking function. Alternatively, a connecting rod-driven assembly structure can be used, with the connecting rod's dead point serving as the locking mechanism, such as an angle lock, a cross lock, or a three-prong lock. In this embodiment, a screw adjustment and locking method is adopted. Specifically, the two toothed rods 39 are designed to be hollow. A long guide rod 394 is then provided in the movable clip 393, extending into the interior of the two toothed rods 39. A fixing nut 395 is provided on the back of the fixture plate 391, and an adjustment nut 396 is provided on the same side of the movable clip 393. An adjustment screw 397 is then used to adjust the distance between the movable clip 393 and the fixed clip 392. Such a design makes the displacement of the movable clamp 393 more precise, thereby improving the clamping stability and cutting effect of the workpiece.

[0073] The following is an example created based on the above cutting process:

[0074] Imagine an operator preparing to cut a section of aluminum alloy profile. He first checks the machine's readiness, confirming that the large gear 36, small gear 37, mounting bracket 38, and gear bar 39 are properly installed and adjusted. He then places the aluminum alloy profile—his workpiece—on the machine and adjusts the fixture's uprights 391 and retaining clips 392 appropriately to suit the workpiece's size and shape.

[0075] The operator then begins clamping the workpiece. He uses the clamping plate 391, fixed clamping piece 392, movable clamping piece 393, and two mounting blocks 38 to secure the workpiece. He rotates the adjustment screw 397 to move the movable clamping piece 393 along the clamping plate 391 to accommodate the workpiece's dimensions. He also uses a soft pad 7 to provide additional support against the workpiece surface for clamping stability.

[0076] The operator sets the feed mechanism according to the cutting requirements. Because aluminum alloy is relatively hard, he chooses automatic feed, which is achieved by the cooperation of ratchet 35 and feed pawl 33.

[0077] After setting the cutting parameters and all parts are ready, the operator starts cutting. The feed mechanism of the device drives the ratchet 35, which further drives the gear rod 39 to move, causing the fixture vertical plate 391, fixed clamp 392, and movable clamp 393 to move together, realizing the feeding of the workpiece.

[0078] After the cut is complete, the operator uses the unlocking member 46 in the clutch assembly 4 to separate the driving ring gear 41 from the driven ring gear 43, allowing the saw blade 002 to move freely. Then, the return spring 5 pushes the gear rod 39, causing the clamp plate 391, fixed clip 392, and movable clip 393 to return to their initial positions, thus resetting the saw blade 002.

[0079] The operator then removes the cut workpiece, inspects and evaluates the cutting results. If the cutting result is satisfactory, he can clean the device and prepare for the next workpiece cutting.

[0080] Throughout the entire process, the operator closely monitors the device's operating status, making timely adjustments and interventions to ensure optimal cutting and safe operation. At every step, he strictly adheres to relevant safety procedures to prevent possible accidents and injuries.

[0081] Ok, let's apply this example to wood cutting:

[0082] Imagine an operator needs to cut a piece of wood. First, he checks the device to confirm that the large gear 36, small gear 37, mounting bracket 38, and gear bar 39 are properly installed and adjusted. Then, he places the wood to be cut on the device and adjusts the clamp uprights 391 and fixing clips 392 appropriately to the size and shape of the wood.

[0083] Next, the operator begins clamping the workpiece. He uses the clamping plate 391, fixed clamp 392, movable clamp 393, and two mounting blocks 38 to secure the wood board. By adjusting screw 397, movable clamp 393 moves along the clamping plate 391 to adjust the size of the wood board. He uses a soft pad 7 to press against the wood board's surface, increasing clamping stability.

[0084] Because the wood is soft, the operator selects manual feed mode for cutting. He sets manual feed by clutch assembly 4 and switching nut 324.

[0085] After all parameters are set and ready, the operator begins cutting the wood board. The feed mechanism drives the ratchet 35 through the swing assembly 32 and the power reference assembly 31, which further drives the gear rod 39 to move, causing the clamp vertical plate 391, fixed clamp 392, and movable clamp 393 to move together, achieving the feeding of the wood board.

[0086] After the cutting is completed, the operator uses the unlocking component 46 in the clutch assembly 4 to separate the driving ring gear 41 from the driven ring gear 43, allowing the saw blade 002 to move freely. Then, the reset spring 5 pushes the gear rod 39 back, causing the clamp plate 391, fixed clamp 392, and movable clamp 393 to return to their initial positions, thus achieving the reset of the saw blade 002.

[0087] After removing the cut planks, the operator inspects the results and assesses whether any adjustments to the cutting settings are necessary to optimize the next cut. Throughout the entire cutting process, he closely monitors the machine's operating status, making timely adjustments and interventions to ensure both the cutting quality and safe operation.

[0088] Once finished, he cleans up the work area, inspects the equipment, and prepares for the next round of cutting. At every step, he follows relevant safety procedures to prevent possible accidents and injuries.

[0089] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined in the accompanying technical proposal.

Claims

1. An auxiliary device for a reciprocating cutting tool, characterized in that The device comprises: a linear drive shaft (1) in a reciprocating motion conversion mechanism (001) of a reciprocating saw or a curved saw, wherein a saw blade (002) is mounted on a free end of the linear drive shaft (1) by configuring a special component; a baffle frame (2) fixedly connected to the reciprocating motion conversion mechanism (001); a feeding mechanism (3), wherein the feeding mechanism comprises a power reference component (31) connected to the power of the linear drive shaft (1) and a swing component (32) connected to the power reference component (31), wherein the power reference component (31) comprises a curved groove (311) provided inside the linear drive shaft (1) and extending along the axis of the linear drive shaft (1), a slideway (312) provided on a side wall of the curved groove (311), and a transmission pin (313) passing through an upper slide seat (23) from bottom to top and then entering the curved groove (311), wherein the upper end of the transmission pin (313) is provided with an arc-shaped protrusion (314) cooperating with the slideway (312); The swing assembly (32) includes a forked frame (321) having one end detachably connected to a transmission pin (313), a swing arm (322) hingedly connected to the other end of the forked frame (321), and capable of rotating and being fixed to a pivot member (323) of a reciprocating saw or jigsaw housing, with the other end of the swing arm (322) being fixed to a side surface below the pivot center of the pivot member (323); The feeding mechanism (3) further comprises a feeding pawl (33) hinged on the pivot member (323) and positioned above the pivot member connection point, and a ratchet (35) cooperating with the feeding pawl (33), wherein the ratchet (35) is rotatably connected to the interior of the baffle frame (2) via a mounting shaft (34); a large gear (36) coaxially connected to the ratchet (35), a small gear (37) meshing with the large gear (36), and a mounting seat (38) fixed to the baffle frame (2) for mounting the small gear (37); and a gear rod (39) slidably mounted in the mounting seat (38) and meshing with the small gear (37), wherein at least one end of the gear rod (39) is fixedly connected to a clamp; By designing the size and number of teeth of the ratchet (35) and rationally matching it with the swing assembly (32) and the power reference assembly (31), the feed motion is made as close to linear as possible; the structural design of the auxiliary device enables the saw blade (002) to automatically feed and accurately cut the workpiece under the cutting motion of a reciprocating saw or a jigsaw.

2. The auxiliary device for a reciprocating cutting tool according to claim 1, characterized in that The clamp comprises a clamp vertical plate (391); a fixed clamp (392) fixed on the clamp vertical plate (391) and perpendicular to the saw blade (002); and a movable clamp (393) with an adjustable distance and arranged parallel to the fixed clamp (392).

3. The auxiliary device for a reciprocating cutting tool according to claim 1, characterized in that The swing arm (322) is broken in the middle and is provided with an opening and a shaft that can extend into the opening, with a certain gap between the two. One end of the swing arm is provided with a rotatable switching nut (324), and the other end is provided with a thread matching the switching nut (324).

4. The auxiliary device for a reciprocating cutting tool according to claim 1, characterized in that A clutch assembly (4) is provided in the feeding mechanism (3), the clutch assembly (4) comprising a mounting shaft (34) having a hollow spline shaft, a ratchet (35) being rotatably connected to the mounting shaft (34), and a fixed active gear ring (41) being added to the side of the ratchet (35).

5. The auxiliary device for a reciprocating cutting tool according to claim 4, characterized in that The clutch assembly (4) further includes a spline sleeve (42) having an external thread and being in a sliding fit with the outer surface of the spline shaft, a driven gear ring (43) threadedly connected to the spline sleeve (42), and a push spring (44) disposed between the driven gear ring (43) and the adjacent side gear (36) and sleeved on the outside of the spline shaft.

6. The auxiliary device for a reciprocating cutting tool according to claim 5, characterized in that A waist hole (45) corresponding to the position of the spline sleeve (42) is provided on the spline shaft, and a thread is provided on the spline shaft mouth on one side of the push spring (44); a threaded unlocking component (46) is provided at the thread, and the unlocking component (46) includes an exposed rotating handle (461) and an extension rod (462) with one end extending into the interior of the spline shaft and the other end rotatably connected to the rotating handle (461); a radially protruding locking portion (463) is provided at the end of the extension rod (462), and a locking hole matching the locking portion (463) is provided on the inner ring of the spline sleeve (42).

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