Handheld metal cold cutting saw tool

Abstract

The utility model provides a handheld metal cold cutting saw tool, and belongs to the field of metal machining equipment. According to the structure, a high-speed motor is in transmission connection with a transmission main shaft, a protection silencing cover and a protection cover are connected to form a whole, a saw blade pressing plate is fixedly connected to the protection silencing cover, and a cold cutting saw blade is located in the whole and rotationally connected with the saw blade pressing plate; a transmission main shaft penetrates through the protection cover from top to bottom, extends into the whole and is connected with a cold cutting saw blade, a chip removal structure is arranged in the whole, and the chip removal structure comprises a plurality of chip removal grooves and chip removal openings which are located in the inner wall of the whole. The chip removal structure is additionally arranged on the protective cover, so that scrap iron can be efficiently discharged, and the scrap iron accumulation problem is avoided; meanwhile, the protection cover, the cold cutting saw blade, the saw blade pressing plate and other structures serve as a whole, modular replacement is achieved, and the blade replacement efficiency is improved; in addition, the ceramic saw blade is adopted, so that the problem of deformation of the thin-wall workpiece caused by heating during cutting is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of metal processing equipment, specifically to a handheld metal cold saw tool. BACKGROUND

[0002] A cold saw is a device used for metal cutting and processing, which mainly relies on high-speed rotation of the saw blade to achieve precise cutting of metal workpieces. Compared with traditional hot cutting processes, the cold saw removes heat through the ceramic saw blade during the cutting process, avoiding deformation, wear and precision loss caused by high temperature of the workpiece. The traditional cold saw equipment still faces the following technical bottlenecks in actual use: High temperature affects the service life of the blade and the cutting quality: The traditional cold saw has limited cooling effect, and the high temperature generated during the cutting process causes the blade to wear out faster, and may also cause local overheating of the workpiece, resulting in deformation of the workpiece, increase of surface burrs, and thus affecting the product quality. In addition, high temperature also increases the frequency of equipment maintenance, affecting production efficiency.

[0003] Iron accumulation problem: Iron filings generated during metal cutting are prone to accumulate between the saw blade and the protective cover, causing unstable operation of the equipment and even potential safety hazards to the operator. The accumulation of iron filings also affects the surface quality of the workpiece, increasing the cleaning workload. The traditional cold saw usually relies on manual cleaning of iron filings, which not only consumes time and effort, but also affects the continuity of production.

[0004] High operating force and high labor intensity: The design of the traditional cold saw often lacks human-machine engineering consideration, and the operator needs to exert a large amount of hand force during operation, which not only increases the operating burden, but also increases the risk of injury and occupational disease. Especially in the case of high-intensity production, the operator will be tired after a long time of using the cold saw, affecting work efficiency and operating safety.

[0005] Unstable cutting surface quality: Because the traditional cold saw does not have a suitable force bearing device during cutting, the cutting position is not fixed well, and the surface quality is difficult to guarantee, often causing problems such as burrs, edge collapse, and bevel, which affect the appearance and precision of the workpiece, and also increase the subsequent polishing and finishing process, wasting resources and time. SUMMARY

[0006] The utility model aims at the technical defects of the prior art, and provides a handheld metal cold saw tool to solve the technical problems of limited cooling effect of conventional cold saw, iron accumulation, complex blade replacement, and high operating load.

[0007] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a hand -held metal cold cut saw tool, including high -speed motor, drive spindle, protective cover, protection muff, chip removal structure, saw blade pressure plate, cold cut saw blade, wherein high -speed motor is connected with drive spindle transmission, protection muff is connected with the protective cover and forms the whole, and the saw blade pressure plate is fixedly connected on the protection muff, and the cold cut saw blade is located the inside and is rotatably connected with the saw blade pressure plate, drive spindle passes through the protective cover from top to bottom and enters to the inside of the whole and is connected with the cold cut saw blade, and the inside of the whole is equipped with the chip removal structure, and the chip removal structure includes a plurality of chip removal grooves and chip removal ports on the inner wall of the whole.

[0009] As preferred, the protection muff and the protective cover are connected to form a whole through a plurality of fastening screws.

[0010] As preferred, the saw blade pressure plate is fixedly connected on the protection muff through a locking bolt.

[0011] As preferred, the high-speed motor is connected with the drive spindle through a primary transmission gear and a secondary transmission gear.

[0012] As preferred, the utility model further includes an upper shell and a casing, the casing and the upper shell are fixed to form a whole casing, the high-speed motor is fixedly installed outside the casing, the primary transmission gear, the secondary transmission gear and the drive spindle are all built-in the inside of the whole casing, and the protective cover is fixedly connected at the bottom end of the whole casing.

[0013] As preferred, a brake mechanism for the drive spindle is arranged on the upper shell.

[0014] As preferred, the cold cut saw blade is a ceramic saw blade.

[0015] As preferred, the high-speed motor is a lithium battery motor; a transmission integrated electric rotor is arranged on the high-speed motor.

[0016] As preferred, an auxiliary stress device is arranged on the cold cut saw tool.

[0017] As preferred, a sound insulation layer, a sound absorption layer and a protective layer are respectively arranged on the protection muff.

[0018] The use process of the utility model is as follows:

[0019] 1, preparation

[0020] Fix the workpiece on the workbench of the cold cut saw, ensure its stability, and avoid moving during cutting.

[0021] Check whether the saw blade is firmly installed, whether the safety guarantee measures are perfect, and confirm that the blade is in good condition,

[0022] Wear ear protection: in order to further protect the hearing of the operator, it is suggested that the operator wears earplugs or noise reduction earmuffs during cutting.

[0023] 2. Start the device

[0024] Press the start button to activate the motor

[0025] Adjust the saw blade speed and feed speed to suit the cutting material requirements, ensure smooth and low noise operation during cutting process.

[0026] 3. Perform the cut

[0027] Slowly contact the saw blade with the workpiece, apply moderate forward force, use force control auxiliary device to reduce hand force, ensure comfortable operation.

[0028] The automatic chip removal system will simultaneously discharge the iron chips generated during the cutting process, keeping the cutting area clean.

[0029] Noise monitoring: pay attention to noise level during operation, ensure within safe range. If abnormal noise is found, stop operation immediately, check blade and noise reduction system to prevent equipment failure or noise control failure.

[0030] 4. Blade replacement (if necessary)

[0031] If blade replacement is required, press the quick blade replacement button to release the current blade and install the new blade, no additional tools required, quick and easy operation.

[0032] Complete the cut and shut down the device, turn off the power, ensure the device is completely stopped, remove the workpiece, and check the cutting quality.

[0033] 5. Cleaning and maintenance

[0034] Clean the saw blade and chip removal groove after each use to ensure smooth chip removal.

[0035] Regularly check the saw blade to ensure it is in good condition, prolong the service life of the device and maintain low noise operation.

[0036] The utility model provides a kind of handheld metal cold cut saw tool.The technical scheme designs the chip removal groove and chip removal port for iron chips, can efficiently discharge iron chips, avoids the problem of iron chips accumulation inside cold cut saw;At the same time, the protective cover, cold cut saw blade, protective soundproof cover, saw blade pressing plate and other structures are taken as a whole, modular replacement is realized, and blade replacement efficiency is improved;In addition, the utility model uses ceramic saw blade to effectively solve the deformation problem of thin-walled workpiece caused by cutting heating;In addition, the utility model adds sound insulation material, sound-absorbing material and other surface layers relying on protective cover, so as to achieve certain sound-absorbing and noise reduction effect.Said above, the utility model optimizes cooling, chip removal and blade replacement structure, solves various problems existing in traditional equipment, realizes the overall improvement of cutting efficiency, cutting quality and operation safety. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is the overall bottom view of the utility model;

[0038] Figure 2 is Figure 1 the cross-sectional view of A-A-A-A in the middle;

[0039] Figure 3 is the specific structure diagram of the chip removal structure;

[0040] Figure 4 is the explosion view of the protective cover, the protective muffler and the internal structure of the two;

[0041] Figure 5 is the overall perspective view of the utility model when the protective cover, the protective muffler and the internal structure of the two are about to be assembled with the casing;

[0042] In the drawings:

[0043] 1. High speed motor 2. Primary transmission gear 3. Secondary transmission gear 4. Upper housing 5. Transmission spindle 6. Motor housing 7. Protective cover 8. Protective muffling cover 9. Chip removal structure 10. Chip removal groove 11. Chip removal opening 12. Saw blade pressing plate 13. Cold cut saw blade 14. Fastening screw 15. Locking bolt DETAILED DESCRIPTION

[0044] The specific embodiments of the utility model will be described in detail below. In order to avoid too many unnecessary details, the structures or functions that are well known will not be described in detail in the following examples. The approximate language used in the following examples can be used for quantitative description, indicating that the quantity can have certain changes without changing the basic function. Unless defined, the technical and scientific terms used in the following examples have the same meaning as generally understood by the skilled person in the field to which the utility model belongs.

[0045] A hand-held metal cold cut saw tool, such as Figures 1-5As shown, including high-speed motor 1, transmission spindle 5, protective cover 7, protective muffler 8, chip removal structure 9, saw blade pressing plate 12, cold saw blade 13, wherein the high-speed motor 1 and transmission spindle 5 transmission connection, protective muffler 8 and protective cover 7 connection as a whole, fixedly connected with saw blade pressing plate 12 on the protective muffler 8, cold saw blade 13 is located in the interior of the whole and saw blade pressing plate 12 rotationally connected, transmission spindle 5 from top to bottom through the protective cover 7 into the interior of the whole and with cold saw blade 13 connection, the interior of the whole is provided with chip removal structure 9, the chip removal structure 9 includes a plurality of chip removal groove 10 and chip removal port 11 on the inner wall of the whole. Wherein, the protective muffler 8 and protective cover 7 are connected as a whole by a plurality of fastening screws 14. The saw blade pressing plate 12 is fixedly connected to the protective muffler 8 by locking bolt 15. The high-speed motor 1 is connected with the transmission spindle 5 by the first transmission gear 2 and the second transmission gear 3. It also includes an upper shell 4 and a machine shell 6, the machine shell 6 and the upper shell 4 are fixed to form a whole shell, the high-speed motor 1 is fixedly installed outside the whole shell, the first transmission gear 2, the second transmission gear 3 and the transmission spindle 5 are all built-in the whole shell, and the protective cover 7 is fixedly connected to the bottom end of the whole shell. The upper shell 4 is provided with a brake mechanism for the transmission spindle 5. The cold saw blade 13 is a ceramic saw blade.

[0046] The functional characteristics of this cold saw tool are as follows:

[0047] The cold saw blade 13 is made of ceramic material, which has higher wear resistance and low heat property.

[0048] The automatic chip removal system composed of the chip removal groove 10 and the chip removal port 11 automatically removes iron chips during cutting, and the streamline design keeps the working area clean.

[0049] The protective cover 7, the protective muffler 8, the saw blade pressing plate 12 and the cold saw blade 13 are replaced as a whole, which realizes the quick replacement of the blade and is convenient for the operator to replace the blade without using tools. Moreover, different size blades can be quickly replaced by using this structure.

[0050] The ceramic cold saw blade 13 relieves the heating and deformation of the workpiece during cutting, improves the quality of the finished product, and is suitable for cutting operations with high precision requirements. Thanks to the low heating and small deformation of the workpiece during cutting, the cutting line speed is improved, and the smoothness and flatness of the cut metal surface are also improved.

[0051] In addition, the sound insulation layer, the sound absorption layer and the protective layer can be arranged on the protective muffler 8, so as to realize the noise reduction design. The sound absorption layer is arranged on the inner side of the partition plate and is made of glass wool material, so as to absorb the medium-high frequency noise generated in the cutting process of the equipment. The sound insulation layer is arranged between the sound absorption layer and the shell and is made of composite damping material, so as to isolate the propagation of low frequency noise. The shell protective layer is the outermost layer and is made of a solid and wear-resistant metal, so as to protect the partition plate from damage caused by iron filings, oil stains and the like, and prolong the service life. The sound absorption hole and the sound guide groove are designed on the partition plate, so that the noise reflection is further reduced and the sound wave is prevented from accumulating in the interior through the scattering and guiding of the sound wave. The noise reduction design effectively reduces the noise, protects the safety and comfort of the operator in the long time work.

[0052] In addition, the force control auxiliary device can be additionally arranged between the saw blade and the workpiece, so as to effectively reduce the manual holding force, reduce the fatigue feeling of the operator and improve the operation safety.

[0053] In summary, the utility model has the enhanced iron removal function, is suitable for different specifications of saw blades and can realize quick replacement, the saw blade operation load is reduced, and the utility model has the functions of noise reduction, workpiece protection and the like.

[0054] The above describes the embodiments of the utility model in detail, but the content is only the preferred embodiment of the utility model and does not limit the utility model. Any modification, equivalent replacement and improvement made within the application range of the utility model should be included in the protection range of the utility model.

Claims

1. A hand-held metal cold saw tool, characterized in that The utility model provides a high speed motor (1), drive main shaft (5), protective cover (7), protective muffler (8), chip removal structure (9), saw blade pressing plate (12), cold cut saw blade (13), wherein, high speed motor (1) is connected with drive main shaft (5) transmission, and protective muffler (8) is connected with protective cover (7) and forms an entirety, and saw blade pressing plate (12) is fixedly connected on protective muffler (8), and cold cut saw blade (13) is located the inside of the entirety and is rotatably connected with saw blade pressing plate (12), and drive main shaft (5) passes through protective cover (7) from top to bottom and extends to the inside of the entirety and is connected with cold cut saw blade (13), and the inside of the entirety is equipped with chip removal structure (9), and the chip removal structure (9) includes a plurality of chip removal grooves (10) and chip removal port (11) on the inner wall of the entirety.

2. A hand-held metal cold saw tool according to claim 1, characterized in that Protective muffler (8) and protective cover (7) are connected by a plurality of fastening screws (14) to form an entirety.

3. A hand-held metal cold saw tool according to claim 1, characterized in that Saw blade pressing plate (12) is fixedly connected on protective muffler (8) by locking bolt (15).

4. A hand-held cold metal-cutting sawing tool according to claim 1, characterized in that High speed motor (1) is connected with drive main shaft (5) transmission by primary transmission gear (2) and secondary transmission gear (3).

5. A hand-held cold metal-cutting sawing tool according to claim 4, characterized in that It also includes upper shell (4) and machine shell (6), and machine shell (6) and upper shell (4) are fixed to form an entire shell, high speed motor (1) is fixedly installed outside the machine shell, primary transmission gear (2), secondary transmission gear (3) and drive main shaft (5) are all built-in the inside of the entire shell, and protective cover (7) is fixedly connected at the bottom end of the entire shell.

6. A hand-held cold metal-cutting sawing tool according to claim 5, characterized in that Brake mechanism for drive main shaft (5) is arranged on upper shell (4).

7. A hand-held cold metal-cutting sawing tool according to claim 1, characterized in that Cold cut saw blade (13) is a ceramic saw blade.

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