CN217223895U - Chain saw sharpening machine - Google Patents

Abstract

The utility model relates to the technical field of sharpening machines, and discloses a chain saw sharpening machine, which comprises a supporting base box, wherein a grinding tool adjusting device is installed on the upper side of the supporting base box, a grinding tool device is installed on the upper side of the grinding tool adjusting device, a chain saw installing device is installed on the front side of the grinding tool adjusting device, the grinding tool adjusting device comprises an installing base box, a mounting plate is installed on the top end of the installing base box, the left side and the right side of the top end of the mounting plate are both connected with first supporting plates, the viewing sides of the two groups of first supporting plates are connected with first screw rods, the outer side of each first screw rod is connected with a first mobile station, the front side and the back side of the top end of each first mobile station are both connected with second supporting plates, the viewing sides of the two groups of second supporting plates are connected with second screw rods, the chain saw installing device can fix and limit chain saw chains according to the lengths of the chain saw chains, the chain saw chain can be polished through the polishing rod by arranging the grinding tool device.

Description

Chain saw sharpening machine

Technical Field

The utility model belongs to the technical field of sharpen machine, specifically be a chain saw sharpen machine.

Background

The chain saw is also called as a chain saw, a portable saw taking a gasoline engine as power is mainly used for lumbering and material making, the working principle of the chain saw is that a shearing action is carried out by the transverse movement of L-shaped blades staggered on a saw chain, the chain is loosened after working, the chain can contract when being cooled, the crankshaft and a bearing can be damaged by the chain which is not loosened, if the chain is tensioned under the working state, the chain can contract when being cooled, and the crankshaft and the bearing can be damaged by the over-tightening of the chain.

During the operation of the chain saw, the left and right cutting edges of the chain can be gradually dull due to gradual abrasion, the cutting speed and the cutting quality are affected, manual filing is performed by using a round file, the filing angle, the cutting edge precision, the consistency of all tool bits and the like are difficult to guarantee, the working efficiency is low, and therefore a chain saw edge grinding machine is provided.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a chain saw sharpening machine, the effectual chain saw of having solved is at work, and blade can slowly become dull because of wearing and tearing gradually about its chain, influences cutting speed and quality, and with the manual filing processing of round file, the angle of filing, the precision of blade and the uniformity of each tool bit etc. all are difficult to guarantee, the very low problem of work efficiency moreover.

In order to achieve the above object, the utility model provides a following technical scheme: a chain saw sharpening machine comprises a supporting base box, a grinding tool adjusting device is installed on the upper side of the supporting base box, a grinding tool device is installed on the upper side of the grinding tool adjusting device, and a chain saw installing device is installed on the front side of the grinding tool adjusting device.

Preferably, grinding apparatus adjusting device is including the installation base case, the mounting panel is installed on the top of installation base case, the left and right sides on mounting panel top all is connected with first backup pad, and is two sets of the side of looking of first backup pad is connected with first screw rod, the outside of first screw rod is connected with first mobile station, both sides all are connected with the second backup pad around the first mobile station top, and are two sets of the side of looking of second backup pad is connected with the second screw rod, the outside of second screw rod is connected with the second mobile station, the grinding apparatus device is installed in the upside of second mobile station.

Preferably, the grinding tool device comprises a motor, a third supporting plate and two sets of fourth supporting plates, wherein auxiliary rotating rods are connected to the left side and the right side of the third supporting plate, the transmission end of the motor is connected with the front side of the left auxiliary rotating rod, the upper side of the fourth supporting plate is connected with a first rotating rod, the rear side of the first rotating rod is connected with the front side of the right auxiliary rotating rod, a grinding rod is connected to the front side of the first rotating rod, and the outer sides of the auxiliary rotating rods are connected with a chain belt.

Preferably, the chain saw mounting device comprises a fifth support plate, a third screw is connected to the body of the fifth support plate, a first connecting block is connected to the lower side of the third screw, sixth support plates are connected to the left side and the right side of the first connecting block, a chain saw rotating device is connected to the lower side of the first connecting block, a chain saw adjusting device is connected to the upper side of the third screw, a chain saw grinding auxiliary loop bar device is connected to the upper side of the chain saw adjusting device, and a chain wheel is connected to the upper side of the sixth support plate.

Preferably, the chain saw rotating device comprises an adjusting plate, an adjusting groove is formed in the body of the adjusting plate, a second fixing bolt is arranged in the adjusting groove, a rotating pipe is connected to the outer side of the second fixing bolt, and a handle is connected to the front side of the rotating pipe.

Preferably, the chain saw adjusting device comprises a fixed box, a second rotating rod is connected to the side wall of the fixed box, a first bevel gear is connected to the rear side of the second rotating rod, a third rotating rod is connected to the upper side wall of the fixed box, a second bevel gear is connected to the lower side of the third rotating rod, the first bevel gear is meshed with the second bevel gear, and a rotary table is connected to the upper side of the third rotating rod.

Preferably, both sides all are connected with the connecting piece about first connecting block, the sixth backup pad is connected with first connecting block through the connecting piece, the downside of sixth backup pad is connected with first fixing bolt, the body of connecting piece seted up with first fixing bolt assorted adjustment tank.

Preferably, the upper side of the supporting base box is connected with a connecting pipe, the upper side of the connecting pipe is connected with a fourth rotating rod, and the grinding tool adjusting device is connected with the upper side of the fourth rotating rod.

Preferably, the front side and the rear side of the end is looked to two sets of first supporting plates are connected with first guide rods, the two sets of first guide rods respectively penetrate through the front side and the rear side of the first mobile station, the two sets of left side and right side of the end is looked to the second supporting plates are connected with second guide rods, and the two sets of second guide rods respectively penetrate through the left side and the right side of the second mobile station.

Preferably, the auxiliary loop bar device for chain saw polishing comprises a U-shaped frame, the front and rear side walls of the U-shaped frame are connected with an action screw, the outer wall of the action screw is provided with a plurality of groups of limiting sleeves, the front side of the action screw is provided with threads, the front side of the action screw is connected with a fixed screw block, and the outer wall of the fixed screw block is connected with a handle

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up chain saw installation device and can fix and spacing it according to the length of chain saw chain, can polish the chain saw chain through the pole of polishing through setting up the grinding apparatus device, it is rotatory to drive the left side through the motor and assist the bull stick, it is rotatory to drive the chain belt through the rotation of the left side assist bull stick, it is rotatory to drive the right side assist bull stick through the chain belt rotation, it is rotatory to drive first bull stick through the rotation of the right side assist bull stick, it is rotatory to drive the pole of polishing through the rotation of first bull stick, polish the chain saw chain through the rotation of the pole of polishing;

2. the utility model can adjust the position of the grinding tool device by arranging the grinding tool adjusting device, and the position of the grinding tool device is adjusted by moving the first mobile station left and right and moving the second mobile station back and forth, so that the base box is fixedly supported, only the third screw rod is rotated, and the integral rotation of the chain saw mounting device can be completed, and further the rotation of the chain blade chain is completed;

3. the utility model discloses a set up the connecting piece and be convenient for adjust the angle of sixth backup pad with first fixing bolt, can adjust the partial chain saw chain that is located the chain saw and polishes supplementary loop bar device upside through setting up chain saw adjusting device, and then improve grinding apparatus device and to chain saw chain upper end chain sword efficiency of polishing, be convenient for adjust this device holistic angle when using through setting up connecting pipe and fourth bull stick.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the adjusting device of the present invention;

FIG. 3 is a schematic view of the structure of the chain saw rotating device of the present invention;

fig. 4 is a schematic structural view of the turntable of the present invention;

FIG. 5 is a schematic view of the structure of the chain saw adjustment device of the present invention;

fig. 6 is a front view of the present invention;

fig. 7 is a schematic structural view of the auxiliary loop bar device for polishing of the chain saw of the present invention.

In the figure: 100. supporting the base box; 110. a connecting pipe; 120. a fourth rotating rod; 200. a grinder adjustment device; 210. installing a base box; 220. mounting a plate; 230. a first support plate; 240. a first screw; 241. a first guide bar; 250. a first mobile station; 260. a second support plate; 261. a second guide bar; 270. a second screw; 280. a second mobile station; 300. an abrasive tool device; 310. a motor; 320. a third support plate; 330. a fourth support plate; 340. a first rotating lever; 350. grinding the rod; 360. a chain belt; 400. a chainsaw mounting arrangement; 410. a fifth support plate; 420. a third screw; 430. a first connection block; 440. a sixth support plate; 441. a connecting member; 442. a first fixing bolt; 450. a chain saw rotating device; 451. an adjusting plate; 452. a second fixing bolt; 453. rotating the pipe; 454. a handle; 460. a chain saw adjustment device; 461. a fixed box; 462. a second rotating lever; 463. a first bevel gear; 464. a third rotating rod; 465. a second bevel gear; 466. a turntable; 470. grinding the auxiliary loop bar device by the chain saw; 471. a U-shaped frame; 472. acting on the screw rod; 473. a limiting sleeve; 474. fixing the screw block; 480. and a sprocket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 6, a chainsaw sharpener includes a support base case 100, a sharpener adjusting device 200 mounted on an upper side of the support base case 100, a sharpener device 300 mounted on an upper side of the sharpener adjusting device 200, and a chainsaw mounting device 400 mounted on a front side of the sharpener adjusting device 200.

Referring to fig. 1-6, the grinding tool adjusting device 200 includes a mounting base box 210, a transformer with a voltage of 220 v to 12 v and a 12 v speed device are installed inside the base box 210, a control switch, a fast-slow switch and a forward-reverse switch are installed on the outer side wall of the base box 210 for rotating the chain saw chain forward and backward, when the device is used, a 220 v common power supply is connected with the installed transformer through a wire harness, a storage battery of an automobile or an electric car can be used as a power source, a mounting plate 220 is installed on the top end of the mounting base box 210, first supporting plates 230 are connected to the left and right sides of the top end of the mounting plate 220, first screw rods 240 are connected to viewing sides of the two groups of first supporting plates 230, a first moving platform 250 is connected to the outer side of the first screw rods 240, second supporting plates 260 are connected to the front and back sides of the top end of the first moving platform 250, second screw rods 270 are connected to viewing sides of the two groups of second supporting plates 260, the second moving table 280 is connected to the outer side of the second screw 270, the grinding tool device 300 is installed on the upper side of the second moving table 280, the position of the grinding tool device 300 can be adjusted by installing the grinding tool adjusting device 200, the grinding tool device 300 includes a motor 310, a third support plate 320, and two sets of fourth support plates 330, the left and right sides of the third support plate 320 are connected with auxiliary rotating rods, the driving end of the motor 310 is connected with the front side of the left auxiliary rotating rod, the upper sides of the two sets of fourth support plates 330 are connected with a first rotating rod 340, the rear side of the first rotating rod 340 is connected with the front side of the right auxiliary rod, the front side of the first rotating rod 340 is connected with a grinding rod 350, the outer sides of the two sets of auxiliary rods are connected with a chain belt 360, the chain saw chain can be ground by the grinding tool device 300 through the grinding rod 350, the chain saw installing device 400 includes a fifth support plate 410, the body of the fifth support plate 410 is connected with a third screw 420, a first connecting block 430 is connected to the lower side of the third screw rod 420, sixth supporting plates 440 are connected to the left and right sides of the first connecting block 430, a chain saw rotating device 450 is connected to the lower side of the first connecting block 430, a chain saw adjusting device 460 is connected to the upper side of the third screw rod 420, a chain saw grinding auxiliary loop bar device 470 is connected to the upper side of the chain saw adjusting device 460, a chain wheel 480 is connected to the upper side of the sixth supporting plate 440, the chain saw can be fixed and limited according to the length of the chain saw chain by arranging a chain saw mounting device 400, the chain saw rotating device 450 comprises an adjusting plate 451, an adjusting groove is formed in the body of the adjusting plate 451, a second fixing bolt 452 is arranged in the adjusting groove of the adjusting plate 451, a rotating pipe 453 is connected to the outer side of the second fixing bolt 452, a handle 454 is connected to the front side of the rotating pipe 453, the chain saw mounting device 400 can be assisted by arranging the chain saw rotating device 450 to fix the chain saw mounting device 400 and drive the chain saw chain to rotate, the chain saw adjusting device 460 comprises a fixed box 461, a second rotating rod 462 is connected to the side wall of the fixed box 461, a first bevel gear 463 is connected to the rear side of the second rotating rod 462, a third rotating rod 464 is connected to the upper side wall of the fixed box 461, a second bevel gear 465 is connected to the lower side of the third rotating rod 464, the first bevel gear 463 is meshed with the second bevel gear 465, a rotary table 466 is connected to the upper side of the third rotating rod 464, a part of the chain saw chain positioned at the upper side of the chain saw grinding auxiliary sleeve rod device 470 can be adjusted by arranging the chain saw adjusting device 460, so that the grinding efficiency of the grinding tool device 300 on the chain blade at the upper end of the chain saw chain is improved, connecting pieces 441 are connected to the left side and the right side of the first connecting piece 430, the sixth supporting plate 440 is connected with the first connecting piece 430 through the connecting piece 441, a first fixing bolt 442 is connected to the lower side of the sixth supporting plate 440, an adjusting groove matched with the first fixing bolt 442 is formed in the body of the connecting piece 441, the angle of the sixth supporting plate 440 can be conveniently adjusted by arranging the connecting member 441 and the first fixing bolt 442, the upper side of the supporting base box 100 is connected with the connecting pipe 110, the upper side of the connecting pipe 110 is connected with the fourth rotating rod 120, the fourth rotating rod 120 is rotatably connected with the connecting pipe 110, the grinding tool adjusting device 200 is connected with the upper side of the fourth rotating rod 120, the integral angle of the device in use can be conveniently adjusted by arranging the connecting pipe 110 and the fourth rotating rod 120, the front side and the rear side of the viewing end of the two groups of first supporting plates 230 are respectively connected with the first guide rods 241, the two groups of first guide rods 241 respectively penetrate through the front side and the rear side of the first moving table 250, the left side and the right side of the viewing end of the two groups of second supporting plates 260 are respectively connected with the second guide rods 261, the two groups of second guide rods 261 respectively penetrate through the left side and the right side of the second moving table 280, and the second moving table 280 and the first moving table 250 are prevented from shaking by arranging the second guide rods 261 and the first guide rods 241, the chain saw grinding auxiliary loop bar device 470 comprises a U-shaped frame 471, the front side wall and the rear side wall of the U-shaped frame 471 are connected with an action screw 472, the outer wall of the action screw 472 is provided with a plurality of groups of limit sleeves 473, threads are arranged on the front side of the action screw 472, the front side of the action screw 472 is connected with a fixed screw block 474, the outer wall of the fixed screw block 474 is connected with a handle, the chain saw chain can be fixed by arranging the chain saw grinding auxiliary loop bar device 470, the chain saw chain is moved in the plurality of groups of limit sleeves 473 during use, when the chain saw chain needs to be fixed, the fixed screw block 474 is rotated, the plurality of groups of limit sleeves 473 are extruded through the fixed screw block 474, and then the chain saw chain is fixed.

The working principle is as follows: when the scheme of the utility model is implemented specifically, the chain saw chain is placed outside the two groups of chain wheels 480, the upper side of the chain saw chain is sleeved outside the chain saw grinding auxiliary loop bar device 470, the lower side of the chain saw chain is sleeved on the lower side of the rotating pipe 453, the opening and closing of the two groups of sixth supporting plates 440 are controlled according to the length of the chain saw chain, so that the chain saw chain is in a tight state, the first fixing bolt 442 is rotated to be separated from the connecting piece 441, the sixth supporting plates 440 are adjusted inside the connecting piece 441, the fixing of the sixth supporting plates 440 is completed through the first fixing bolt 442 after the adjustment, the first fixing bolt 442 slides in the adjusting groove of the connecting piece 441 when the sixth supporting plates 440 are adjusted, the nut and the screw of the first fixing bolt 442 are fixed after the adjustment, the connecting piece 441 is extruded through the prompt that the nut and the screw are fixed, the fixing of the sixth supporting plates 440 is completed, after the sixth supporting plate 440 is adjusted, the first connecting block 430 is moved to finely adjust the chain saw chain, the nut and the screw of the second fixing bolt 452 are loosened, the rotating pipe 453 is moved, the nut of the second fixing bolt 452 is fixed, meanwhile, the nut of the second fixing bolt 452 extrudes the adjusting plate 451 to complete the fixation of the rotating pipe 453, the first screw 240 is rotated, the first moving table 250 is driven to move left and right by the first screw 240, the first moving table 250 moves left and right under the limit of the first guide rod 241, the second screw 270 is rotated, the second moving table 280 is driven to move front and back by the rotation of the second screw 270, the second moving table 280 moves front and back under the limit of the second guide rod 261, the position adjustment of the grinding tool device 300 is completed by the left and right movement of the first moving table 250 and the front and back movement of the second moving table 280, the motor 310 is started, the left auxiliary rotating rod is driven to rotate by the motor 310, the chain belt 360 is driven to rotate by the rotation of the left auxiliary rotating rod, the right auxiliary rotating rod is driven to rotate by the rotation of the chain belt 360, the first rotating rod 340 is driven to rotate by the rotation of the right auxiliary rotating rod, the grinding rod 350 is driven to rotate by the rotation of the first rotating rod 340, the chain saw chain is ground by the rotation of the grinding rod 350, the handle 454 is rotated in the grinding process of the chain saw chain, the rotating pipe 453 is driven to rotate by the handle 454, the rotating pipe 453 rotates outside the screw of the second fixing bolt 452, the screw of the second fixing bolt 452 is a screw with a threaded outer wall part, the rotating pipe 453 is installed at a place without threads on the outer wall of the screw, the chain saw chain is driven to rotate by the rotation of the rotating pipe 453, so that different positions of the chain saw chain are ground, a user rotates the third screw 420 by one hand, fixes the fifth support plate 410 by one hand, and the whole chain saw installation device 400 ascends or descends when the third screw 420 rotates, and then drive the chain saw chain to adjust from top to bottom, rotate the second rotating rod 462, drive the first bevel gear 463 through the second rotating rod 462 and rotate, drive the second bevel gear 465 through the first bevel gear 463 and rotate, drive the third rotating rod 464 through the second bevel gear 465 and rotate, drive the revolving stage 466 through the third rotating rod 464 and rotate, drive the supplementary loop bar device 470 of chain saw grinding to rotate through the revolving stage 466 is rotated, and then make the chain saw chain of placing at the supplementary loop bar device 470 upside of chain saw grinding incline, make things convenient for the chain blade on the chain saw chain to be ground by the grinding rod 350, the fixed base case 100 that supports, only rotate the third screw rod 420, also can accomplish the whole rotation of chain saw installation device 400 and accomplish the rotation to the chain blade chain.

It should be noted that, in this document, relational terms such as first and second, and the like are only used for distinguishing one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations, moreover, the terms "comprise", or any other variation thereof are intended to cover a non-exclusive inclusion, so that a process, a method, an article, or an apparatus including a series of elements does not only include those elements but also other elements not explicitly listed, or further include elements inherent to such process, method, article, or apparatus, and it should be noted that, unless explicitly stated or limited otherwise, the terms "install", "connect", or the like are to be broadly understood and can be fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or the two elements may be connected through an intermediate medium, and the specific meaning of the above terms in the present invention can be understood by those skilled in the art through specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A chain saw sharpening machine characterized in that: the grinding tool adjusting device comprises a supporting base box (100), a grinding tool adjusting device (200) is installed on the upper side of the supporting base box (100), a grinding tool device (300) is installed on the upper side of the grinding tool adjusting device (200), and a chain saw installing device (400) is installed on the front side of the grinding tool adjusting device (200).

2. A chainsaw sharpening machine according to claim 1, wherein: grinding apparatus adjusting device (200) is including installation base case (210), mounting panel (220) are installed on the top of installation base case (210), the left and right sides on mounting panel (220) top all is connected with first backup pad (230), and is two sets of the side of looking of first backup pad (230) is connected with first screw rod (240), the outside of first screw rod (240) is connected with first mobile station (250), both sides all are connected with second backup pad (260) around first mobile station (250) top, and are two sets of the side of looking of second backup pad (260) is connected with second screw rod (270), the outside of second screw rod (270) is connected with second mobile station (280), grinding apparatus device (300) is installed in the upside of second mobile station (280).

3. A chainsaw sharpening machine according to claim 1, wherein: grinding apparatus device (300) includes motor (310), third backup pad (320), two sets of fourth backup pad (330), the left and right sides of third backup pad (320) all is connected with supplementary bull stick, the transmission end of motor (310) is connected with the front side of the supplementary bull stick in left side, and is two sets of the upside of fourth backup pad (330) is connected with first bull stick (340), the rear side of first bull stick (340) is connected with the front side of right side auxiliary rod, the front side of first bull stick (340) is connected with pole (350) of polishing, and is two sets of the outside of auxiliary rod is connected with chain belt (360).

4. A chainsaw sharpening machine according to claim 1, wherein: the chain saw mounting device (400) comprises a fifth supporting plate (410), a third screw (420) is connected to the body of the fifth supporting plate (410), a first connecting block (430) is connected to the lower side of the third screw (420), sixth supporting plates (440) are connected to the left side and the right side of the first connecting block (430), a chain saw rotating device (450) is connected to the lower side of the first connecting block (430), a chain saw adjusting device (460) is connected to the upper side of the third screw (420), a chain saw grinding auxiliary sleeve rod device (470) is connected to the upper side of the chain saw adjusting device (460), and a chain wheel (480) is connected to the upper side of the sixth supporting plate (440).

5. A chainsaw sharpening machine according to claim 4, wherein: the chain saw rotating device (450) comprises an adjusting plate (451), an adjusting groove is formed in the body of the adjusting plate (451), a second fixing bolt (452) is arranged in the adjusting groove of the adjusting plate (451), a rotating pipe (453) is connected to the outer side of the second fixing bolt (452), and a handle (454) is connected to the front side of the rotating pipe (453).

6. A chainsaw sharpening machine according to claim 4, wherein: the chain saw adjusting device (460) comprises a fixed box (461), a second rotating rod (462) is connected to the side wall of the fixed box (461), a first bevel gear (463) is connected to the rear side of the second rotating rod (462), a third rotating rod (464) is connected to the upper side wall of the fixed box (461), a second bevel gear (465) is connected to the lower side of the third rotating rod (464), the first bevel gear (463) is meshed with the second bevel gear (465), and a rotary table (466) is connected to the upper side of the third rotating rod (464).

7. A chainsaw sharpening machine according to claim 4, characterized in that: the left and right sides of first connecting block (430) all is connected with connecting piece (441), sixth backup pad (440) is connected with first connecting block (430) through connecting piece (441), the downside of sixth backup pad (440) is connected with first fixing bolt (442), the body of connecting piece (441) seted up with first fixing bolt (442) assorted adjustment tank.

8. A chainsaw sharpening machine according to claim 1, wherein: the upper side of the supporting base box (100) is connected with a connecting pipe (110), the upper side of the connecting pipe (110) is connected with a fourth rotating rod (120), and the grinding tool adjusting device (200) is connected with the upper side of the fourth rotating rod (120).

9. A chainsaw sharpening machine according to claim 2, wherein: two sets of first backup pad (230) looks both sides around the end and all is connected with first guide arm (241), and is two sets of first guide arm (241) run through the front and back both sides of first mobile station (250) respectively, and is two sets of second backup pad (260) looks the left and right sides of end and all is connected with second guide arm (261), and is two sets of second guide arm (261) runs through the left and right sides of second mobile station (280) respectively.

10. A chainsaw sharpening machine according to claim 4, wherein: the auxiliary loop bar device (470) for grinding the chain saw comprises a U-shaped frame (471), wherein the front side wall and the rear side wall of the U-shaped frame (471) are connected with an acting screw rod (472), the outer wall of the acting screw rod (472) is provided with a plurality of groups of limiting sleeves (473), the front side of the acting screw rod (472) is provided with threads, the front side of the acting screw rod (472) is connected with a fixed screw block (474), and the outer wall of the fixed screw block (474) is connected with a handle.

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