Twist drill grinding and fixing device

Abstract

The utility model relates to a twist drill grinding fixing device, which belongs to the technical field of twist drill grinding and comprises an angle grinder, a protective cover and a grinding wheel, the protective cover and the grinding wheel are arranged on the angle grinder, the inner peripheral wall of the protective cover is fixedly connected with a clamping plate, a mounting block is placed in the protective cover, and a clamping groove is formed in one side face, close to the protective cover, of the mounting block. The clamping plate extends into the clamping groove, a containing hole is formed in the front face of the mounting block, a twist drill with one end penetrating through the containing hole and extending to the front face of the mounting block is placed on the back face of the mounting block, and mounting grooves are formed in the left side face and the right side face of the mounting block. According to the twist drill grinding and fixing device, through cooperation of the angle grinder and the mounting block, a twist drill can be conveniently ground, the grinding device is simple in structure, a worker can conveniently operate and carry the device, the worker without twist drill grinding experience can conveniently grind a drill bit, and the use effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of twist drill grinding technology, specifically to a twist drill grinding fixing device. BACKGROUND

[0002] Twist drill, the tool of drilling the round hole of workpiece, twist drill is the tool of drilling the round hole of workpiece through the rotary cutting of its relative fixed axis, is named because its chip flute is helical and is similar to hemp flower, helical flute has 2 grooves, 3 grooves or more grooves, but 2 grooves are most common, twist drill can be clamped on hand -held drilling tool or drill press, milling machine, lathe even machining center of hand -held type and be used.

[0003] Drill bit material is generally high -speed tool steel or hard alloy, when working outdoors, the hole punching twist drill wears seriously, needs to regrind, and there is no fixed grinding machine when working outdoors, it is inconvenient to grind the twist drill, reduces the hole punching efficiency and hole punching effect, therefore a twist drill grinding fixing device is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] In view of the deficiency of prior art, the utility model provides a twist drill grinding fixing device, has the advantages of convenient carrying and convenient grinding, solves the problem that the hole punching twist drill wears seriously when working outdoors, needs to regrind, and there is no fixed grinding machine when working outdoors, it is inconvenient to grind the twist drill, reduces the hole punching efficiency and hole punching effect.

[0005] To achieve the above object, the utility model provides the following technical scheme: a twist drill grinding fixing device, including angle grinder and the protective cover and abrasive disc set on the angle grinder, the inner peripheral wall of the protective cover is fixedly connected with the clamping plate, the inside of the protective cover is placed with the mounting block.

[0006] The side of mounting block close to protective cover is equipped with the clamping groove, the clamping plate extends to the inside of clamping groove, the front surface of mounting block is equipped with the placing hole, the back surface of mounting block is placed with the twist drill one end of which penetrates the placing hole and extends to the front surface of mounting block, the left side surface and the right side surface of mounting block are equipped with the installation groove.

[0007] Two installation grooves are equipped with fixing assembly, to fix the clamping plate.

[0008] The mounting block is equipped with support assembly, to support the fixing assembly.

[0009] Further, the clamping plate is arc plate, the mounting block is arc block, the included angle between the central straight line of twist drill and the surface of abrasive disc is thirty degrees.

[0010] Further, the fixing assembly comprises two driving rods, the two driving rods are rotationally connected in the two mounting grooves through bearings respectively, the bottom surfaces of the two driving rods are movably connected with screw rods which extend to the interiors of the driving rods, the bottom surfaces of the two screw rods are fixedly connected with moving plates, the bottom surfaces of the two moving plates are fixedly connected with fixing rods, and the top surface of the clamping plate is provided with two fixing holes.

[0011] Further, the two fixing rods are in clearance fit with the two fixing holes, the bottom surfaces of the two driving rods are provided with threaded holes, and the two screw rods extend to the interiors of the two threaded holes and are in threaded connection with the threaded holes.

[0012] Further, the supporting assembly comprises two supporting plates, the two supporting plates are fixedly connected to the top surfaces of the two moving plates respectively, the interior of the mounting block is provided with two supporting grooves, the two supporting plates extend to the interiors of the two supporting grooves respectively, the outer circumferential walls of the two driving rods are fixedly sleeved with connecting plates, the outer circumferential walls of the two connecting plates are provided with positioning grooves, and the left side surface and the right side surface of the mounting block are fixedly connected with positioning rods which extend to the interiors of the two positioning grooves respectively.

[0013] Further, the supporting plates are L-shaped plates, the supporting plates and the supporting grooves are in sliding connection, the positioning rods are L-shaped elastic rods, and the positioning rods and the positioning grooves are in fit.

[0014] Compared with the prior art, the technical scheme has the following beneficial effects:

[0015] 1. The twist drill grinding fixing device is convenient to grind the twist drill through the cooperation between the angle grinder and the mounting block, the grinding device is simple in structure, convenient to operate and carry, and convenient for workers without twist drill grinding experience to grind the drill bit, and the use effect is improved.

[0016] 2. The twist drill grinding fixing device is convenient to grind the twist drill through the cooperation between the angle grinder and the mounting block, the grinding device is simple in structure, convenient to operate and carry, and convenient for workers without twist drill grinding experience to grind the drill bit, and the use effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is a top view schematic view of the clamping groove in the structure of the utility model;

[0019] Figure 3 For Figure 1 The structural enlarged view of the mounting block in the utility model;

[0020] Figure 4 The top view schematic view of the mounting block in the utility model structure.

[0021] In the figure: 1 angle grinder, 2 protective cover, 3 clamping plate, 4 clamping groove, 5 mounting groove, 6 mounting block, 7 placing hole, 8 fixing hole, 9 moving plate, 10 supporting plate, 11 supporting groove, 12 positioning groove, 13 connecting plate, 14 driving rod, 15 positioning rod, 16 screw rod, 17 fixed rod, 18 twist drill, 19 grinding wheel piece. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1 to 4 The twist drill grinding fixing device in the embodiment includes an angle grinder 1, a protective cover 2 and a grinding wheel piece 19 arranged on the angle grinder 1, and clamping plates 3 fixedly connected to the inner peripheral wall of the protective cover 2. The inside of the protective cover 2 is provided with a mounting block 6.

[0024] The side of the mounting block 6 close to the protective cover 2 is provided with a clamping groove 4, the clamping plates 3 extend into the inside of the clamping groove 4, the front of the mounting block 6 is provided with a placing hole 7, and the back of the mounting block 6 is provided with a twist drill 18 with one end penetrating through the placing hole 7 and extending to the front of the mounting block 6. The left side and the right side of the mounting block 6 are both provided with mounting grooves 5.

[0025] Among them, the clamping plate 3 is an arc plate, the mounting block 6 is an arc block, and the included angle between the central straight line of the twist drill 18 and the surface of the grinding wheel piece 19 is thirty degrees.

[0026] It should be noted that the angle grinder 1 is a conventional device known to the public in the prior art, and its specific structure and working principle will not be described here. In addition, the number of the placing holes 7 can be multiple, and the size and number of the placing holes 7 can be determined according to the specifications of the carried twist drill 18.

[0027] Specifically, the installation block 6 is pushed, the installation block 6 and the protective cover 2 are attached, the clamping plate 3 is inserted into the inside of the clamping groove 4, the installation block 6 is limited through the attachment between the clamping plate 3 and the clamping groove 4, the twist drill 18 is pushed, the twist drill 18 passes through the placement hole 7, and then is attached with the abrasive disc 19, the included angle is thirty degrees, the angle grinder 1 is started, the abrasive disc 19 is driven to rotate, and the twist drill 18 is ground.

[0028] In the embodiment, the two installation grooves 5 are provided with a fixing assembly, the fixing assembly comprises two driving rods 14, the two driving rods 14 are rotatably connected in the two installation grooves 5 through bearings respectively, the bottom surfaces of the two driving rods 14 are movably connected with screw rods 16 extending into the inside thereof, the bottom surfaces of the two screw rods 16 are fixedly connected with moving plates 9, the bottom surfaces of the two moving plates 9 are fixedly connected with fixing rods 17, the top surface of the clamping plate 3 is provided with two fixing holes 8, and the two fixing rods 17 extend into the two fixing holes 8 respectively.

[0029] The two fixing rods 17 are in clearance fit with the two fixing holes 8 respectively, the bottom surfaces of the two driving rods 14 are provided with threaded holes, and the two screw rods 16 extend into the two threaded holes and are in threaded connection with the threaded holes.

[0030] Specifically, the fixing rod 17 and the fixing hole 8 are located on the same center line, the driving rod 14 is rotated, the screw rod 16 drives the fixing rod 17 to move downward through the moving plate 9 through the threaded connection between the driving rod 14 and the screw rod 16, the fixing rod 17 is inserted into the inside of the fixing hole 8, the clamping plate 3 is fixed through the clearance fit between the fixing rod 17 and the fixing hole 8, and then the installation block 6 is fixed.

[0031] In the embodiment, the installation block 6 is provided with a supporting assembly, the supporting assembly comprises two supporting plates 10, the two supporting plates 10 are fixedly connected to the top surfaces of the two moving plates 9 respectively, the inside of the installation block 6 is provided with two supporting grooves 11, the two supporting plates 10 extend into the two supporting grooves 11 respectively, the outer circumferential walls of the two driving rods 14 are fixedly sleeved with connecting plates 13, the outer circumferential walls of the two connecting plates 13 are provided with positioning grooves 12, and the left side surface and the right side surface of the installation block 6 are fixedly connected with positioning rods 15 extending into the two positioning grooves 12 respectively.

[0032] The supporting plate 10 is an L-shaped plate, the supporting plate 10 and the supporting groove 11 are in sliding connection, the positioning rod 15 is an L-shaped elastic rod, and the positioning rod 15 and the positioning groove 12 are attached.

[0033] Specific, pull positioning rod 15, make positioning rod 15 from positioning slot 12, through the sliding connection between support plate 10 and support groove 11, support moving plate 9, improve the stability of moving plate 9, after mounting block 6 is fixed, push positioning rod 15, positioning rod 15 reset inserted into the inside of positioning slot 12, through the fit between positioning rod 15 and positioning slot 12, fix driving rod 14.

[0034] The working principle of the above embodiment is:

[0035] Push mounting block 6, mounting block 6 and protective cover 2 fit, clamping plate 3 is inserted into the inside of clamping groove 4, through the fit between clamping plate 3 and clamping groove 4, limit mounting block 6, fixed rod 17 and fixed hole 8 are located on the same center line, pull positioning rod 15, make positioning rod 15 from positioning slot 12, and then rotate driving rod 14, driving rod 14 rotates, through the threaded connection between driving rod 14 and screw rod 16 and the sliding connection between support plate 10 and support groove 11, make screw rod 16 move downward through moving plate 9, fixed rod 17 is inserted into the inside of fixed hole 8, through the gap fit between fixed rod 17 and fixed hole 8, fix clamping plate 3, and then fix mounting block 6, push positioning rod 15, positioning rod 15 reset inserted into the inside of positioning slot 12, through the fit between positioning rod 15 and positioning slot 12, fix driving rod 14, push twist drill 18, twist drill 18 passes through placing hole 7, and then fits with abrasive disc 19, and the included angle is thirty degrees, start angle grinder 1, drive abrasive disc 19 to rotate, and grind twist drill 18.

[0036] It should be noted that, in this text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article or equipment including the element.

[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A grinding device for a twist drill, comprising an angle grinder (1) and a protective cover (2) and a grinding disc (19) arranged on the angle grinder (1), characterized in that: The inner peripheral wall of the protective cover (2) is fixedly connected with a clamping plate (3), and an installation block (6) is placed in the protective cover (2); A clamping groove (4) is formed in the side of the installation block (6) close to the protective cover (2), the clamping plate (3) extends to the inside of the clamping groove (4), a placing hole (7) is formed in the front of the installation block (6), a twist drill (18) whose one end penetrates through the placing hole (7) and extends to the front of the installation block (6) is placed on the back of the installation block (6), and installation grooves (5) are formed in the left and right sides of the installation block (6). Two fixing assemblies are arranged between the two installation grooves (5) to fix the clamping plate (3), and a supporting assembly is arranged on the installation block (6) to support the fixing assembly.

2. The twist drill grinding fixture of claim 1, wherein: The clamping plate (3) is an arc-shaped plate, the installation block (6) is an arc-shaped block, and the included angle between the central straight line of the twist drill (18) and the surface of the grinding wheel piece (19) is thirty degrees.

3. The twist drill grinding fixture of claim 1, wherein: The fixing assembly comprises two driving rods (14), the two driving rods (14) are rotatably connected in the two installation grooves (5) through bearings respectively, the bottom surface of each of the two driving rods (14) is movably connected with a screw rod (16) whose one end extends to the inside of the driving rod (14), the bottom surface of each of the two screw rods (16) is fixedly connected with a moving plate (9), the bottom surface of each of the two moving plates (9) is fixedly connected with a fixing rod (17), and the top surface of the clamping plate (3) is provided with two fixing holes (8), and the two fixing rods (17) extend to the inside of the two fixing holes (8) respectively.

4. The twist drill grinding fixture of claim 3, wherein: The two fixing rods (17) are in clearance fit with the two fixing holes (8), the bottom surface of each of the two driving rods (14) is provided with a threaded hole, and the two screw rods (16) extend to the inside of the two threaded holes and are in threaded connection with the threaded holes.

5. The twist drill grinding fixture of claim 3, wherein: The supporting assembly comprises two supporting plates (10), the two supporting plates (10) are fixedly connected on the top surface of each of the two moving plates (9), the inside of the installation block (6) is provided with two supporting grooves (11), the two supporting plates (10) extend to the inside of the two supporting grooves (11) respectively, the outer peripheral wall of each of the two driving rods (14) is fixedly sleeved with a connecting plate (13), the outer peripheral wall of each of the two connecting plates (13) is provided with a positioning groove (12), and the left and right sides of the installation block (6) are fixedly connected with positioning rods (15) whose one ends extend to the inside of the two positioning grooves (12) respectively.

6. The twist drill grinding fixture of claim 5, wherein: The supporting plate (10) is an L-shaped plate, the supporting plate (10) and the supporting groove (11) are in sliding connection, the positioning rod (15) is an L-shaped elastic rod, and the positioning rod (15) and the positioning groove (12) are in abutment.

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