CN116945283B - Auxiliary device for reciprocating cutting tool and application method thereof - Google Patents

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

Auxiliary device of reciprocating cutting tool and application method thereof

Technical Field

The invention belongs to the technical field of reciprocating saws, and particularly relates to an auxiliary device of a reciprocating cutting tool and an application method thereof.

Background

Reciprocating and curved saws are widely and frequently used in the woodworking industry as two important woodworking tools based on the cutting principle of reciprocating motion. The advantage of a reciprocating saw is its high speed movement and powerful cutting capability of the saw blade, particularly for large section and high density timber cutting tasks. This advantage comes mainly from the feeding way of the up and down force, providing it with a stable and powerful cutting power. Reciprocating saws exhibit excellent performance and desirable cutting results when processing bars, boards and other large wood.

In contrast, the characteristics of a jigsaw are significantly different. The saw blade has relatively low moving speed and is more suitable for cutting timber with small and medium sections. When handling high density timber, the jig saw requires a greater force and has a relatively high working strength. The cutting is carried out in a forward pushing mode, and although the cutting strength is lower than that of a reciprocating saw, the fine and accurate cutting capability is more outstanding.

To enhance the cutting performance of both saws, reciprocating saws are typically designed with clamping devices to secure the object being cut. For example, chinese grant publication CN103785898B discloses a novel reciprocating saw, in which the clamping device is detachably coupled to the baffle, unlike the common positioning structure provided on the clamping device and the main body of the reciprocating saw, the baffle is fully utilized, so as to avoid adding components on the main body. In addition, the design is convenient for installing and detaching the clamping device, only one-hand operation is needed, and the use efficiency is greatly improved.

However, with the continuous advancement of technology, the materials and structures of saw blades and the power of cutting power sources are continuously improved and raised. The present reciprocating and jig saws are no longer limited to cutting timber but have been applied to cutting metal materials such as aluminum, steel pipe and the like. However, the existing improved clamping devices are mainly used for stabilizing the cut, and do not give enough consideration to the precise feed amount control during the cutting of the metal material, which may lead to safety risks during the cutting. Thus, current cutting processes still require experienced and skilled operators, and there is still a risk of breakage of the tooth jump of the saw blade, possibly even causing personal injury to the operators.

In general, while existing reciprocating and curved saws have improved in construction and performance, there are some key issues that need to be addressed. For example, when cutting a metal material, how to control the feed amount more precisely to improve the cutting accuracy and safety, and how to simplify the operation process of the apparatus to reduce the dependency on the skill and experience of the operator are all the problems to be solved currently. In future research and development, these problems should be the main focus of research to drive further developments and improvements in reciprocating and jig saw technology.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide an auxiliary device for a reciprocating cutting tool, which can be installed by adaptively modifying a linear driving shaft of a reciprocating saw and a jigsaw, and which can be automatically fed while fastening a cut object, and which is particularly suitable for cutting a metal piece, and which can be conveniently switched to manual feeding, thereby enhancing the operation flexibility, safety and cutting accuracy.

The invention aims at realizing the technical scheme that the auxiliary device for the reciprocating cutting tool comprises a reciprocating shaft, a baffle frame, a feeding mechanism and a swinging assembly, wherein the reciprocating shaft is arranged in a reciprocating motion conversion mechanism of the reciprocating saw or the curved saw, the reciprocating shaft is provided with a saw blade at the free end through a special component, the baffle frame is fixedly connected with the reciprocating motion conversion mechanism, the feeding mechanism comprises a power reference assembly and a swinging assembly, the power reference assembly is in power connection with the reciprocating shaft, the swinging assembly is in power connection with the power reference assembly, the power reference assembly comprises a curve groove which is arranged inside the reciprocating shaft and extends along the axis of the reciprocating shaft, a slideway which is arranged on the side wall of the curve groove, and a transmission pin which passes through a sliding stabilizing seat from bottom to top and then enters the curve groove, and the upper end of the transmission pin is provided with a circular arc-shaped protrusion which is matched with the slideway;

the swing assembly comprises a bifurcation frame, one end of which is detachably and fixedly connected with the transmission pin, a swing arm hinged with the other end of the bifurcation frame, and a pivoting member which can rotate and is fixed on a reciprocating saw or a curved saw shell, wherein the other end of the swing arm is fixed on the side surface of the pivoting member, which is lower than the pivoting center;

The feeding mechanism further comprises a feeding pawl hinged on the pivoting piece and arranged at a position which is higher than the connecting point of the pivoting piece, a ratchet matched with the feeding pawl, a large gear coaxially connected with the ratchet, a small gear meshed with the large gear, a mounting seat fixed on the baffle frame and used for mounting the small gear, a toothed bar slidably arranged in the mounting seat and meshed with the small gear, and a clamp fixedly connected to at least one end of the toothed bar;

The auxiliary device has the structural design that the saw blade can automatically feed and accurately cut the workpiece under the cutting motion of the reciprocating saw or the curved saw.

Due to the unique structural design, the device can effectively perform automatic feeding and accurate cutting on the workpiece under the cutting motion of the reciprocating saw or the curved saw, and the cutting efficiency and the cutting accuracy are greatly improved.

Preferably, the clamp comprises a clamp vertical plate, a fixed clamping piece fixed on the clamp vertical plate and perpendicular to the saw blade, and a movable clamping piece with adjustable distance and arranged in parallel with the fixed clamping piece. According to the technical scheme, the design of the clamp is increased, the clamp comprises the fixed clamping piece and the movable clamping piece, so that the clamp can adapt to workpieces with different sizes and shapes, and the adaptability and the universality of the device are improved.

Preferably, the size and number of teeth of the ratchet wheel therein can be varied so that the automatic feed movement is as nearly linear as possible. The technical proposal provides a design capable of changing the size and the number of teeth of the ratchet wheel so as to ensure that the automatic feeding motion is as close to linear continuity as possible, thereby further improving the cutting precision and the product quality.

Preferably, the swing arm is broken in the middle and is provided with an opening and a shaft which can extend into the opening, a certain gap is arranged between the swing arm and the shaft, one end of the swing arm is provided with a rotatable switching nut, and the other end of the swing arm is provided with threads matched with the nut. According to the technical scheme, the adjustable structure is additionally arranged on the swing arm, so that the feeding mode is more flexible, the operation is more convenient, and the working efficiency is improved.

Preferably, a clutch assembly is arranged in the feeding mechanism, the clutch assembly comprises a mounting shaft with a hollow spline shaft, a ratchet wheel is rotatably connected with the mounting shaft, and a driving gear ring is additionally arranged on the side face of the ratchet wheel in a fixedly connected mode. The technical scheme introduces the design of the clutch assembly, can select manual or automatic feeding according to actual needs, provides more operation options, and enhances the flexibility of the device.

Preferably, the clutch assembly further comprises a spline sleeve having a sliding fit relationship with the outer surface of the spline shaft and having external threads, a driven gear ring threadedly coupled to the spline sleeve, and a biasing spring disposed between the driven gear ring and the adjacent side gear wheel and disposed externally of the spline shaft. The technical scheme further improves the design of the clutch assembly and improves the stability and reliability of the equipment.

The spline shaft is provided with a waist hole corresponding to the position of the spline sleeve, a thread is arranged at the mouth of the spline shaft on one side of the pushing spring, an unlocking component in threaded connection is arranged at the thread, the unlocking component comprises an exposed rotating handle and an extension rod, one end of the extension rod extends into the spline shaft, the other end of the extension rod is rotatably connected with the rotating handle, a radially protruding clamping part is arranged at the end part of the extension rod, and a clamping hole matched with the clamping part is arranged at the inner ring of the spline sleeve. The design of the technical proposal ensures that the equipment can be quickly and conveniently reset after cutting is finished, thereby greatly improving the working efficiency.

The present invention also provides a method for cutting by using the auxiliary device, which comprises the following steps:

a. Placing a workpiece on the device, and then selecting manual or automatic feeding through operating a clutch assembly and a switching nut;

b. during the cutting process, the workpiece is prevented from moving reversely;

c. after cutting is completed, the tooth bar is pushed by the reset spring to reset the device;

d. after the reset is completed, the adjusting screw releases the control on the movable clamping piece, and then the workpiece which is cut is taken out.

The technical scheme provides a method for cutting by using the device, and high-efficiency and accurate cutting can be realized through a series of operation steps.

Preferably, the method includes monitoring the operating condition and quality of the cut of the apparatus during workpiece placement and cutting using a monitoring system. According to the technical scheme, the steps of monitoring the working state and the cutting quality of the equipment by using the monitoring system are added, intelligent management of the equipment is realized, and the cutting accuracy and the product quality are improved.

Preferably, the reverse movement preventing step of the workpiece includes using an anti-rotation pawl. The design of the technical proposal ensures that the device can prevent the workpiece from moving reversely in the cutting process, thereby ensuring the accuracy and stability of cutting.

Preferably, the driving gear ring is separated from the driven gear ring by an unlocking member in the clutch assembly after cutting is completed, so as to facilitate resetting. The design of the technical proposal ensures that the device can be quickly and conveniently reset after cutting is finished, thereby greatly improving the working efficiency.

Preferably, wherein in the manual or automatic feeding step, if automatic feeding is selected, the movement of the automatic feeding is made as nearly linear as possible by changing the size and number of teeth of the ratchet. The technical proposal further perfects the design of the automatic feeding mode, and the size and the tooth number of the ratchet wheel are changed, so that the automatic feeding motion is as close to linear continuity as possible, thereby further improving the cutting precision.

In summary, compared with the prior art, the invention has the following advantages:

The device is highly flexible, and can adapt to workpieces with different shapes and sizes through components such as the clamp vertical plate, the fixed clamping piece, the movable clamping piece, the adjusting screw and the like, so that the cutting process is highly flexible, and the universality of cutting is greatly improved.

Manual/automatic feeding, namely, through the design of a clutch assembly and a switching nut, an operator can select a manual or automatic feeding mode according to cutting requirements, so that good operation adaptability and flexibility are realized.

And in the cutting process, the pawl of the device and the anti-rotation pawl work cooperatively to prevent the workpiece from moving reversely, thereby ensuring the accuracy and stability of cutting and improving the cutting quality.

And the reset operation is simplified, namely the reset of the saw blade and the workpiece can be realized rapidly and conveniently after the cutting is finished through the unlocking part and the reset spring in the clutch assembly, so that the reset operation is simplified, and the working efficiency is improved.

The soft cushion is arranged on the device seat, so that the friction force between the workpiece and the device seat can be reduced, the vibration of the workpiece in the cutting process is reduced, the cutting accuracy and stability are further improved, and the overall cutting quality is improved.

The service life of the equipment is prolonged, namely the driving gear ring and the driven gear ring are separated through the unlocking part in the clutch assembly, so that the saw blade can move freely, the abrasion in the running process of the equipment is reduced, the reset complexity after cutting is reduced, and the service life of the equipment is prolonged.

These advantages make the device represent a significant advantage in practical applications, providing a more efficient, accurate and safer solution for cutting operations.

Drawings

FIG. 1 is a schematic view of a structure for clamping a workpiece according to the present invention;

FIG. 2 is a schematic illustration of an explosion of the clutch assembly of the present invention;

FIG. 3 is a schematic view of the linear drive shaft of the present invention in exploded apart partial configuration;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a schematic view of the explosive separation of the associated components between the various assemblies of the present invention;

FIG. 6 is a schematic view of another angle of the present invention for clamping a workpiece.

The marks in the figure:

The reciprocating conversion mechanism 001, the linear drive shaft 1, the saw blade 002, the aluminum alloy section 003, the slide bearing seat 23, the drive portion 30, the shutter frame 2, the support lugs 21, the riser 22, the upper slider 23, the extension piece 24, the feed mechanism 3, the power reference assembly 31, the curved groove 311, the slide rail 312, the transmission pin 313, the circular arc protrusion 314, the swing assembly 32, the fork 321, the swing arm 322, the pivot 323, the switching nut 324, the feed pawl 33, the mounting shaft 34, the ratchet 35, the large gear 36, the pinion 37, the mounting seat 38, the rack 39, the clamp riser 391, the fixing clip 392, the moving clip 393, the long rod 394, the fixing nut 395, the adjustment nut 396, the adjustment screw 397, the clutch assembly 4, the driving ring gear 41, the spline sleeve 42, the driven ring gear 43, the push spring 44, the waist hole 45, the unlocking member 46, the rotary handle 461, the extension rod 462, the locking portion 463, the reset spring 5, the anti-rotation pawls 6, 7.

Detailed Description

The invention is further described below with reference to the embodiments shown in all the drawings:

example 1

1-6, An auxiliary device for use with reciprocating and curved saws is innovative in that the device is specially adapted to fit the linear drive shaft of a cutting tool and complete the installation. Once the device is installed, the device can automatically regulate and control the cutting progress while sawing the workpiece, and is particularly suitable for cutting metal parts. In addition, the device can be easily switched to a manual mode, so that the flexibility, safety and cutting accuracy of operation are improved.

The auxiliary device mainly comprises the following components:

A linear drive shaft 1 is mounted in a reciprocating conversion mechanism 001 of a reciprocating saw or a jigsaw, and a saw blade 002 is mounted at a free end.

The baffle frame 2 is detachably and fixedly connected with the reciprocating motion conversion mechanism 001 and extends to one side of the saw blade 002 from the connecting position.

The device also comprises a feed mechanism 3 comprising a power reference assembly 31, a swing assembly 32, etc. The power reference assembly 31 is in power connection with the linear drive shaft 1 and contains a curvilinear recess 311, a slideway 312 and a drive pin 313 inside the linear drive shaft 1. The upper end of the driving pin 313 is provided with a circular arc-shaped protrusion 314 which is matched with the slideway 312.

The swing assembly 32 includes a fork 321 detachably and fixedly connected to the driving pin 313, a swing arm 322 hinged to the other end of the fork 321, and a pivoting member 323 rotatably and fixedly attached to the saw housing.

The device is further provided with a feed pawl 33, which pawl 33 is hinged to the pivot member 323, in particular in a position above the pivot point of the pivot member, a ratchet wheel 35, which ratchet wheel 35 is rotatable inside the shutter frame 2 by means of 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 wheel 35 and are fixed to the shutter frame 2. In addition, the device is provided with a toothed bar 39 slidably mounted in the mounting 38, at least one end of the toothed bar 39 being fixedly connected to the clamp riser 391.

The device is also equipped with a fixed jaw 392 perpendicular to the saw blade 002 and fixed to the clamp riser 391, and a movable jaw 393 of adjustable distance and lockable. The design and the installation of the components are very accurate, and the stability and the accuracy of the operation process are ensured. In particular, the cooperation of the clamp plate 391 with the fixed clamping piece 392 and the adjustable movable clamping piece 393 ensures a stable position of the workpiece during the cutting process.

The device works on the principle that the motion of the linear driving shaft 1 drives the transmission pin 313 to move up and down, so that the swing arm 322 swings, and the feeding pawl 33 is pushed and pulled, and finally the ratchet wheel 35 rotates.

In the actual cutting process, after the workpiece is fixed by the two clamping plates, the linear driving shaft 1 starts to move to drive the saw blade 002 to cut. Likewise, the driving pin 313 is also driven by the linear driving shaft 1 to move up and down, and this motion is transmitted through the swing assembly 32, thereby driving the ratchet 35 to rotate. Rotation of the ratchet 35 rotates the large gear 36, which in turn drives rotation of the small gear 37. The rotation of the pinion 37 further pushes the toothed bar 39 upward, and finally, the toothed bar 39 drives the fixed clamping piece 392 and the movable clamping piece 393 to push the workpiece to the direction of the saw blade 002 to be cut, and finally, the whole cutting process is completed.

In the whole cutting process, an operator only needs to operate the reciprocating saw or the curved saw, so that the work load is reduced, and meanwhile, the stable feeding amount also greatly improves the cutting effect.

In summary, the auxiliary device of the reciprocating saw realizes the improvement of the working efficiency, the reduction of the labor intensity of operators and the improvement of the cutting quality through the structural optimization and the design of the feeding mechanism. The whole cutting process is clear, simple, visual and easy to understand, easy to operate and has wide application prospect and market potential.

The components of the device may be changed or adjusted according to particular needs and use scenarios. For example, critical parts of the device, such as the drive pin 313, swing arm 322, ratchet 35, etc., may be specifically designed based on the cutting requirements, loading conditions, and the material to be cut. The drive pin 313 and swing arm 322 may be made of different materials to meet various operating environments and durability requirements. At the same time, the design of the ratchet 35 can be adjusted according to the specific feed speed and force requirements.

There are also many optimisation possibilities for the linear drive shaft 1. For example, a plurality of different types of linear drive shafts may be designed to accommodate various types of saw blades and cutting tasks. Furthermore, the linear drive shaft 1 may also be designed to be removable and replaceable for ease of maintenance and replacement.

The design and optimization of these replaceable components can increase the flexibility of the device, accommodate various cutting requirements, and ensure the stability and accuracy of the cutting process.

To further enhance the stability of the work piece, the design of the large gear 36, the small gear 37, the mounting seat 38 and the toothed bar 39 all comprise two sets of elements, which are symmetrically distributed with respect to the saw blade 002. Through this symmetrical design, the clamp vertical plate 391, the fixed clamping piece 392, the movable clamping piece 393 and the two mounting seats 38 can be integrated into a whole, so that the stability of the device is effectively improved.

In the baffle frame 2, two downwardly extending support lugs 21 and one riser 22 are contained. Both support lugs 21 are provided with coaxial through holes for rotatably supporting the mounting shaft 34. In order to enhance the feeding stability, an upper slider 23 fixedly connected by a bolt is installed at the upper end of the vertical plate 22. At both ends of the upper slider 23, a through hole for the toothed bar 39 to slide tightly is designed. Thus, each rack bar 39 can be stably supported while being moved.

The ratchet wheel is non-linear in its feed, considering that it is intermittent. The effect of such non-linear feeding is less when cutting soft materials such as wood, plastic, etc. But it is desirable to provide a continuous feed when cutting metal. Thus, the feed motion can be made as nearly linear as possible by sizing and tooth count of ratchet 35 and rationalizing with swing assembly 32 and power reference assembly 31.

In some specific cutting scenarios, such as small part cutting, if the saw body can be stabilized, the operator can keep a certain distance during the cutting process, which can better ensure safety. Thus, we add an extension 24 to the baffle frame 2, which extension is preferably mounted in a detachable attachment to the reciprocation conversion mechanism 001. The purpose of fixing the saw body can be conveniently achieved by arranging the stabilizing piece which is connected with the expansion piece outside.

To switch between automatic and manual feeding, a special swing arm 322 is designed, and an opening and a shaft which can extend into the opening are arranged in the middle of the swing arm 322, and a certain distance is kept between the opening and the shaft. One end of the swing arm is provided with a rotatable switching nut 324 and the other end is threaded to match the nut. The switch nut 324 is partially exposed outside the saw housing for ease of manual operation. When the swing arms at both ends are connected by the switching nut 324, the swing arms resume the rigid connection, resuming the effective transmission.

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 comprises a spline shaft with a hollow structure, wherein the installation shaft 34 is replaced by the spline shaft, a ratchet wheel 35 which is fixedly connected with the installation shaft 34 is changed into a rotatable connection, and a driving gear ring 41 which is fixedly connected with the ratchet wheel 35 is additionally arranged on the side of the ratchet wheel. The clutch assembly 4 further includes a splined sleeve 42 having a sliding fit relationship with the outer surface of the splined shaft and having external threads, a driven gear ring 43 threadably coupled to the splined sleeve 42, and a biasing spring 44 disposed between the driven gear ring 43 and the adjacent side bull gear 36 and disposed about the splined shaft. In a normal state, the pushing spring 44 pushes the driven gear ring 43 to a position meshed with the driving gear ring 41, so that the rotation of the ratchet 35 is transmitted to the spline shaft through the driving gear ring 41 and the driven gear ring 43, and related transmission parts such as a large gear are driven to complete automatic feeding.

To facilitate the separation and connection of the driven gear ring 43, a hole 45 corresponding to the spline sleeve 42 is designed on the spline shaft, and threads are added to the spline shaft opening on one side of the push spring 44. At this threaded location we install a threaded unlocking member 46. The unlocking member 46 includes an exposed rotating handle 461 and an extension rod 462 having one end projecting into the spline shaft and the other end rotatably connected to the rotating handle 461. The end of the extension rod 462 is provided with a radially protruding catch 463, while the inner side of the splined sleeve 42 is provided with a catch groove cooperating with the catch 463. When the locking portion 463 is inserted into the locking groove of the spline sleeve 42 through the hole 45, the extension rod 462 is moved by rotating the handle 461 according to the screw direction, so as to drive the spline sleeve 42 and the driven gear ring 43 mounted thereon to be separated from or connected with the driving gear ring 41.

The separation operation of the clutch assembly 4 has two purposes, namely, firstly, when soft materials such as wood are cut, the requirement on the stability of the feeding amount is not great, and the workpiece is fixed outside, in this case, the mounting shaft 34 is not limited by the ratchet wheel 35, two clamping plates can normally clamp the workpiece, an operator can manually press down the machine body for cutting, and secondly, after the cutting is finished, the saw blade 002 needs to be reset, in order to better complete the reset operation, a reset spring 5 is additionally arranged between the upper sliding seat 23 and the clamp vertical plate 391, and the reset spring 5 is sleeved on the periphery of the toothed bar 39.

To improve the clamping effect, we add padding 7 on the side of the moving jaw 393 facing the fixed jaw 392. This cushion 7 provides additional support, better protects the workpiece and improves the stability of the clamping.

The cooperation of the ratchet 35 and the feed pawl 33 is a one-way rotary drive, the pawl having a non-return function, and to enhance the non-return effect we add a reverse rotation preventing anti-rotation pawl 6 hinged to the pivot 323 in a relatively downward position. This design allows for more efficient control of the movement of the device when desired.

The moving manner of the moving clamping piece 393 can be any form in the prior art, for example, the moving clamping piece 393 is slidably positioned on the clamp vertical plate 391 through a rail, and then a bolt-nut structure is used for pushing a pushing block under the contact moving clamping piece 393 to realize the displacement of the moving clamping piece, so as to achieve the purpose of clamping a workpiece. The bolt and nut are matched with each other to have a locking function, and the bolt and nut can also be of a component structure pushed by the connecting rod, and the dead point of the connecting rod is used as a locking structure, such as angle locking, cross locking, three-fork locking and the like. In this embodiment, a screw adjusting and locking manner is adopted, specifically including designing two toothed bars 39 to be hollow, then setting a guiding long bar 394 extending into the two toothed bars 39 in the moving clamping piece 393, setting a fixing nut 395 on the back of the clamp vertical plate 391, setting an adjusting nut 396 on the same side of the moving clamping piece 393, and then adjusting the distance between the moving clamping piece 393 and the fixing clamping piece 392 by using an adjusting screw 397 in cooperation. Such a design allows for a more accurate displacement of the moving jaw 393, thereby improving the clamping stability and cutting effectiveness of the workpiece.

The following is one embodiment created according to the foregoing cutting procedure:

It is envisaged that an operator is preparing for a length of aluminium alloy profile cutting work. The operator first checks whether the device is ready to confirm that the large gear 36, small gear 37, mount 38, and rack 39 are all properly installed and adjusted. Next, he places an aluminum alloy profile on the device, which is his work piece, and then moderately adjusts the clamp riser 391 and the fixed clip 392 to accommodate the size and shape of the work piece.

The operator then begins to grip the workpiece. He uses the clamp riser 391, the stationary clip 392, the moving clip 393, and the two mounts 38 to stably secure the workpiece. He rotates adjustment screw 397 to move moving jaw 393 along clamp riser 391 to fit the size of the workpiece. He also uses the cushion 7 to cling to the workpiece surface, providing additional support for the clamping stability.

The operator sets the feed mechanism according to the cutting requirements. Because the aluminum alloy is hard, he chooses to feed automatically by the ratchet 35 and feed pawl 33 cooperating.

After the cutting parameters are set and all the components are ready, the operator begins the cutting operation. The feeding mechanism of the device drives the ratchet wheel 35, further drives the toothed bar 39 to move, so that the clamp vertical plate 391, the fixed clamping piece 392 and the movable clamping piece 393 move together to realize the feeding of workpieces.

After the cut is completed, the operator separates the driving gear ring 41 from the driven gear ring 43 by the unlocking member 46 in the clutch assembly 4, allowing the saw blade 002 to move freely. Then, the return spring 5 pushes the toothed bar 39, so that the clamp vertical plate 391, the fixed clamping piece 392, and the moving clamping piece 393 return to the original positions, that is, the reset of the saw blade 002 is achieved.

The operator then removes the completed cut work piece, checks and evaluates the outcome of the cut. If the cutting result is satisfactory, he can clean the device and prepare the next work piece for cutting.

In the whole process, an operator is closely concerned with the running state of the device all the time, and timely adjustment and intervention are made to ensure the cutting effect and the safe running of the device. In each operation, he strictly adheres to the relevant safety regulations to prevent possible accidents and injuries.

Good, let us apply this example to wood cutting:

It is envisaged that the operator now needs to cut a block of wood. First, he checks the device to confirm that the large gear 36, the small gear 37, the mount 38, and the rack 39 have been properly installed and adjusted. He then places the wood board to be cut on the device and appropriately adjusts the clamp risers 391 and the fixing clips 392 to fit the size and shape of the wood board.

The operator then begins to grip the workpiece. He uses the clamp vertical plate 391, the fixing clip 392, the moving clip 393, and the two mounting seats 38 to stably fix the wood board. The moving jaw 393 is moved along the clamp riser 391 by adjusting the screw 397 to fit the dimensions of the wooden plate. He uses the soft pad 7 to cling to the surface of the wood board, so as to increase the clamping stability.

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

After all parameters are set and ready, the operator starts cutting the board. The feeding mechanism drives the ratchet wheel 35 through the swing component 32 and the power reference component 31, further drives the toothed bar 39 to move, and enables the clamp vertical plate 391, the fixed clamping piece 392 and the movable clamping piece 393 to move together, so that the feeding of the wood board is realized.

After the cutting is completed, the operator separates the driving gear ring 41 from the driven gear ring 43 by the unlocking member 46 in the clutch assembly 4, so that the saw blade 002 can be freely moved. Then, the return spring 5 pushes the toothed bar 39 back, so that the clamp vertical plate 391, the fixed clamping piece 392 and the movable clamping piece 393 return to the original positions, that is, the saw blade 002 is reset.

After taking out the cut wood board, the operator checks the cutting result and evaluates whether the cutting setting needs to be adjusted to optimize the next cutting. In the whole cutting process, the operator needs to pay close attention to the running state of the device, adjust and intervene in time, ensure the cutting effect and ensure the safe running of the device.

After completion he starts to clean the work area, check the device and prepare for the next round of cutting work. In each operation, he follows the relevant safety regulations, preventing possible accidents and injuries.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions, without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (6)

1. An auxiliary device for a reciprocating cutting tool, characterized in that the device comprises a linear driving shaft (1) in a reciprocating conversion mechanism (001) of the reciprocating saw or the curve saw, the linear driving shaft (1) is provided with a saw blade (002) at the free end by arranging special parts, a baffle frame (2) fixedly connected with the reciprocating conversion mechanism (001), a feeding mechanism (3) comprising a power reference assembly (31) which is in power connection with the linear driving shaft (1) and a swing rotation assembly (32) which is in power connection with the power reference assembly (31), wherein the power reference assembly (31) comprises a curve groove (311) which is arranged inside the linear driving shaft (1) and extends along the axis of the linear driving shaft (1), a slide way (312) arranged on the side wall of the curve groove (311), and a transmission pin (313) which enters the curve groove (311) after penetrating through an upper slide seat (23) from bottom to top, and the upper end of the transmission pin (313) is provided with a circular arc-shaped protrusion (314) which is matched with the slide way (312);

The swing assembly (32) comprises a bifurcation frame (321) with one end detachably and fixedly connected with the transmission pin (313), a swing arm (322) hinged with the other end of the bifurcation frame (321), a pivoting piece (323) which can rotate and is fixed on the shell of the reciprocating saw or the curved saw, and the other end of the swing arm (322) is fixed on the side surface of the pivoting piece (323) which is deviated downwards from the pivoting center;

The feeding mechanism (3) further comprises a feeding pawl (33) hinged on the pivoting piece (323) and at a position which is higher than the connecting point of the pivoting piece, a ratchet wheel (35) matched with the feeding pawl (33), a big gear (36) coaxially connected with the ratchet wheel (35), a small gear (37) meshed with the big gear (36) and a mounting seat (38) fixed on the baffle frame (2) and used for mounting the small gear (37), and a toothed bar (39) slidably mounted in the mounting seat (38) and meshed with the small gear (37), wherein the toothed bar (39) is fixedly connected with a clamp at least one end;

the structure design of the auxiliary device enables the saw blade (002) to automatically feed and accurately cut a workpiece under the cutting motion of a reciprocating saw or a curved saw by designing the size and the number of teeth of the ratchet wheel (35) and reasonably matching with the swinging component (32) and the power reference component (31) so that the feeding motion is as close to linearity as possible.

2. The auxiliary device for a reciprocating cutting tool according to claim 1, wherein the clamp comprises a clamp plate 391, a fixing jaw 392 fixed to the clamp plate 391 and perpendicular to the saw blade 002, and a moving jaw 393 having an adjustable distance and disposed in parallel with the fixing jaw 392.

3. An auxiliary device for a reciprocating cutting tool according to claim 1, characterized in that the swing arm (322) is split in the middle and provided with an opening and a shaft which can extend into the opening, with a certain clearance between them, wherein one end is provided with a rotatable switching nut (324) and the other end is provided with a thread matching the switching nut (324).

4. Auxiliary device for reciprocating cutting tools according to claim 1, characterized in that a clutch assembly (4) is provided in the feed mechanism (3), which clutch assembly (4) comprises a mounting shaft (34) with a hollow structured spline shaft, a ratchet wheel (35) being rotatably connected to the mounting shaft (34), and a fixedly connected driving gear ring (41) being added to the side of the ratchet wheel (35).

5. The auxiliary device for a reciprocating cutting tool according to claim 4, wherein the clutch assembly (4) further comprises a spline sleeve (42) having a sliding fit relationship with the outer surface of the spline shaft and having an external thread, a driven gear ring (43) threadedly coupled to the spline sleeve (42), and a biasing spring (44) disposed between the driven gear ring (43) and the adjacent side bull gear (36) and sleeved outside the spline shaft.

6. The auxiliary device for a reciprocating cutting tool according to claim 5, wherein a waist hole (45) corresponding to the position of the spline sleeve (42) is formed in the spline shaft, a screw thread is formed at the spline shaft opening portion at one side of the pushing spring (44), a screw-connected unlocking member (46) is arranged at the screw thread, the unlocking member (46) comprises an exposed rotary handle (461), an extension rod (462) with one end extending into the spline shaft and the other end rotatably connected with the rotary handle (461), a radially protruding locking portion (463) is formed at the end of the extension rod (462), and a locking hole matched with the locking portion (463) is formed at the inner ring of the spline sleeve (42).