Eccentric alloy drill

Abstract

The utility model relates to the technical field of eccentric alloy drills, in particular to an eccentric alloy drill. According to the technical scheme, the drill bit comprises a drill bit body and a clamping handle, a sliding barrel is fixedly installed between the drill bit body and the clamping handle, the drill bit body is installed in the sliding barrel in a sliding mode, and an adjusting mechanism capable of adjusting the relative distance between the drill bit body and the end face of the sliding barrel is arranged in the sliding barrel. The drill bit can move in the sliding barrel through the adjusting mechanism, so that the extending length of the drill bit is adjusted, and the problems that the drill bit is bent, broken and the like due to the too long drill bit, the drilling precision and stability are affected, or the drill bit is too short and cannot reach the needed drilling depth, and the drilling effect is poor are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to eccentric alloy drill technical field especially relates to a kind of eccentric alloy drill. BACKGROUND

[0002] Eccentric alloy drill is a kind of specially designed drill bit, its blade part is not evenly distributed on the circumference of drill bit, but is concentrated on one side of drill bit. This design can improve the cutting performance and life of drill bit, so that it has better effect when processing some materials. Eccentric alloy drill is usually used to process cast iron, steel and aluminum alloy and other materials. In these materials, the blade part of eccentric alloy drill can cut into material better, and can cut off material faster. In addition, the design of eccentric alloy drill can also reduce the wear of drill bit, prolong its service life. The manufacturing material of eccentric alloy drill is usually high-strength, high-toughness alloy steel, such as high-speed steel, cobalt-based alloy, etc. These materials have high hardness and wear resistance, which can meet the processing requirements of eccentric alloy drill. When using eccentric alloy drill, attention should be paid to selecting appropriate drill bit size and processing parameters to ensure the quality and stability of processing effect. In addition, eccentric alloy drill also needs to be ground and maintained regularly to maintain the sharpness and processing performance of its blade part.

[0003] If drill bit is too long or too short, it will affect the accuracy and effect of drilling. If drill bit is too long, it is easy to produce bending, fracture and other problems during drilling, which affects the accuracy and stability of drilling; if drill bit is too short, it may not reach the required drilling depth, resulting in poor drilling effect, and the too long drill bit cannot work in closed narrow space. Therefore, when selecting drill bit, appropriate length of drill bit should be selected according to actual needs and material characteristics to ensure the accuracy and effect of drilling. At the same time, attention should be paid to maintaining the structural characteristics and rigidity of drill bit during processing to avoid deformation and failure of drill bit due to improper processing. SUMMARY

[0004] The utility model aims at the problems existing in the background art, and provides an eccentric alloy drill capable of adjusting the length of drill bit.

[0005] The technical scheme of the utility model discloses an eccentric alloy drill, which comprises a drill bit and a clamping handle, a sliding cylinder is fixedly installed between the drill bit and the clamping handle, the drill bit is slidingly installed in the sliding cylinder, an adjusting mechanism for adjusting the relative distance between the drill bit and the end face of the sliding cylinder is arranged in the sliding cylinder, and cooling holes are arranged on the drill bit to facilitate heat dissipation of the drill bit.

[0006] Optionally, the upper side of the clamping handle is polygonal, and a round corner is arranged on the upper end face of the clamping handle to facilitate installation.

[0007] Optionally, the drill bit is fixedly provided with a triangular block at one end, the tip of the triangular block is located on the extension line of the axis of the drill bit, and the cooling hole is located on the triangular block.

[0008] Optionally, the adjusting mechanism comprises a telescopic rod fixedly arranged in the sliding cylinder, a pushing rod fixedly arranged on one side of the telescopic rod, a pulling block slidingly arranged on the pushing rod, a clamping column fixedly arranged on the telescopic rod, a connecting column fixedly arranged on the clamping column, a rotating plate rotatably arranged on the clamping column, four pairs of hinge pieces fixedly arranged on the rotating plate, a T-shaped block rotatably arranged on the hinge pieces, and a clamping block slidingly arranged on the clamping column, wherein the clamping block is provided with a T-shaped groove, the T-shaped block is slidingly arranged in the T-shaped groove, and the sliding cylinder is provided with a plurality of clamping grooves matched with the clamping block.

[0009] Optionally, the bottom plate of the clamping column is provided with four sliding grooves for sliding the clamping block, the sliding cylinder is provided with a sliding hole for the pulling block to pass through, and one end of the pulling block is provided with a plurality of anti-skid grooves.

[0010] Optionally, the sliding cylinder is provided with a rectangular groove, and the drill bit is fixedly provided with a rectangular block, which is slidingly arranged in the rectangular groove.

[0011] Compared with the prior art, the drill bit can be moved in the sliding cylinder through the adjusting mechanism, so that the length of the drill bit can be adjusted, thereby preventing the drill bit from being too long to cause bending, breaking and other problems, affecting the accuracy and stability of drilling, or the drill bit being too short to reach the required drilling depth, resulting in poor drilling effect. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 A structure schematic view of an embodiment of the utility model is given;

[0013] Figure 2 A structure schematic view of the telescopic rod of the utility model is given;

[0014] Figure 3 An internal structure schematic view of the sliding cylinder of the utility model is given;

[0015] Figure 4 A structure schematic view of the drill bit of the utility model is given;

[0016] Figure 5 A structure schematic view of the pushing rod and the pulling block of the utility model is given;

[0017] Figure 6 An internal structure schematic view of the clamping column of the utility model is given;

[0018] Figure 7 A structure schematic view of the utility model Figure 6 at A is given;

[0019] Figure 8 The structural schematic view of the chute of the present application is shown in the figure;

[0020] Figure 9 The structural schematic view of the T-shaped block of the present application is shown in the figure;

[0021] Figure 10 The structural schematic view of the clamping block of the present application is shown in the figure;

[0022] Figure 11 The structural schematic view of the present application Figure 1 The local enlarged view of the middle B

[0023] Reference signs: 1, drill bit; 2, clamping handle; 3, triangular block; 4, sliding cylinder; 5, connecting column; 6, clamping column; 7, telescopic rod; 8, pushing rod; 9, pulling block; 10, sliding hole; 11, clamping groove; 12, rectangular groove; 13, rectangular block; 14, chute; 15, rotating plate; 16, hinged piece; 17, T-shaped block; 18, T-shaped groove; 19, clamping block; 20, cooling hole. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments.

[0025] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0026] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the present application.

[0027] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0028] It is to be understood that the terminology "including", "comprising", or any other variation thereof, is intended to cover a non-exclusive inclusion such that process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Exemplary expressions of the terminology "including", "comprising", and the like, do not necessarily refer to the same embodiment or example in this specification. Furthermore, specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0029] In the description of the utility model, it needs to explain, unless another explicit stipulation and limit, the term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be two element internal intercommunication. For ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.

[0030] Embodiment

[0031] As Figure 2 and Figure 5 The utility model discloses a eccentric alloy drill, including drill bit 1 and clamping handle 2, the fixed mounting of drill bit 1 and clamping handle 2 has slide cylinder 4, drill bit 1 is slidably installed in slide cylinder 4, be equipped with the adjusting mechanism that can adjust the relative distance between drill bit 1 and the end face of slide cylinder 4 in slide cylinder 4, and the adjusting mechanism includes telescopic link 7 that is fixedly installed in slide cylinder 4, the pull lever 8 that is fixedly installed in one side of telescopic link 7, pull block 9 that is slidably installed on pull lever 8, be equipped with the slide hole 10 that pull block 9 passes through on slide cylinder 4, pull block 9 one end is equipped with a plurality of antiskid recess, pull pull block 9, make pull block 9 pass through slide hole 10, then can push pull block 9 and rotate, to drive pull lever 8 and rotate, to drive telescopic link 7 and rotate.

[0032] As Figure 2 and Figures 6-10As shown, the clamping column 6 is fixedly installed on the telescopic rod 7, the connecting column 5 is fixedly installed on the clamping column 6, the rotating plate 15 is rotatably installed on the clamping column 6, four pairs of hinged pieces 16 are fixedly installed on the rotating plate 15, the T-shaped block 17 is rotatably installed on the hinged piece 16, the clamping block 19 is slidably installed on the clamping column 6, the T-shaped groove 18 is arranged on the clamping block 19, the T-shaped block 17 is slidably installed in the T-shaped groove 18, the sliding cylinder 4 is provided with a plurality of clamping grooves 11 matched with the clamping block 19, the bottom plate of the clamping column 6 is provided with four sliding grooves 14 for sliding the clamping block 19, the telescopic rod 7 is rotated to drive the clamping column 6 to rotate, thereby driving the hinged piece 16 on the clamping column 6 to rotate, thereby driving the T-shaped block 17 to move, thereby making the T-shaped block 17 slide in the T-shaped groove 18 and drive the clamping block 19 to slide along the sliding groove 14, the clamping block 19 is located in the clamping groove 11 in the initial state, at this time the clamping groove 11 fixes the clamping block 19, thereby positioning the drill bit 1, when the length of the drill bit 1 needs to be adjusted, the clamping column 6 is rotated to drive the clamping block 19 to move, so that the clamping block 19 slides out of the clamping groove 11, thereby the drill bit 1 can be pushed to slide in the sliding cylinder 4, after being adjusted to the appropriate position, the clamping column 6 is rotated again to drive the clamping block 19 to move, so that the clamping block 19 enters the clamping groove 11, thereby completing the fixation and length adjustment of the drill bit, when the drill bit 1 slides in the sliding cylinder 4, the telescopic rod 7 is driven to expand and contract, the clamping groove 11 and the sliding groove 14 can evenly distribute the radial force generated by the rotation of the drill bit 1 on the bottom plate of the clamping column 6 and the sliding cylinder 4.

[0033] As shown in Figures 1-4 and Figure 11 As shown, the clamping handle 2 is polygonal on the upper side, the upper end surface of the clamping handle 2 is provided with a round corner for convenient installation, one end of the drill bit 1 is fixedly installed with a triangular block 3, the tip of the triangular block 3 is located on the extended line of the axis of the drill bit 1, the triangular block 3 is provided with a cooling hole 20, the cooling hole 20 can cool and cool the drill bit, and improve the heat conduction efficiency: the cooling hole 20 can increase the contact area between the drill bit and the surrounding medium such as cooling liquid, so that heat is more easily transferred from the drill bit 1 to the cooling liquid, thereby improving the heat dissipation efficiency. Strengthen the heat convection: the cooling hole 20 can make the cooling liquid flow on the surface of the drill bit 1, thereby enhancing the heat convection and accelerating the heat dissipation speed of the drill bit 1. Reduce thermal stress: the cooling hole 20 can reduce the thermal stress of the drill bit 1 under high temperature, avoid deformation or rupture of the drill bit 1 due to overheating, the sliding cylinder 4 is provided with a rectangular groove 12, the drill bit 1 is fixedly installed with a rectangular block 13, the rectangular block 13 is slidably installed in the rectangular groove 12, the clamping handle 2 is convenient for the clamping and fixation of the drill bit by the electric drill or machine tool, etc. to prevent slipping between the drill bit 1 and the electric drill, the triangular block 3 is convenient for aligning the axis position of the punching, the rectangular block 13 prevents the clamping column 6 from rotating in the sliding cylinder 4 when adjusting the position of the drill bit 1, thereby causing the clamping block 19 and the clamping groove 11 to be misaligned.

[0034] Working principle: pull the pull block 9, make the pull block 9 through the sliding hole 10, namely can promote the pull block 9 to rotate, thereby drive the telescopic rod 7 to rotate, the telescopic rod 7 rotates and can drive the clamping column 6 to rotate, thereby make T-shaped block 17 in T-shaped groove 18 slide and drive the clamping block 19 to slide along the sliding groove 14, when the length of drill bit 1 needs to be adjusted, rotate the clamping column 6, make T-shaped block 17 drive the clamping block 19 to move, make the clamping block 19 slide out from the clamping groove 11, then push the drill bit 1 in the sliding cylinder 4 and slide, the rectangular block 13 prevents the clamping column 6 from rotating in the sliding cylinder 4 when adjusting the position of drill bit 1, thereby causing the clamping block 19 and the clamping groove 11 to be misaligned, after adjusting to the appropriate position, the clamping column 6 can be rotated again, the clamping column 6 drives the clamping block 19 to move, the clamping block 19 enters the clamping groove 11, thereby completing the fixing and length adjustment of the drill bit, the drill bit is cooled through the cooling hole 20, which is convenient for cooling and heat dissipation of the drill bit 1 and facilitates chip removal.

[0035] The above specific embodiments are only several optional embodiments of the utility model, based on the technical scheme of the utility model and the related inspiration of the above embodiments, the person skilled in the art can make a variety of alternative improvements and combinations to the above specific embodiments.

Claims

1. An eccentric alloy drill comprising a drill bit (1) and a clamping shank (2), characterized in that: The drill bit (1) is fixedly installed with a slide cylinder (4) between the clamping handle (2), the drill bit (1) is slidably installed in the slide cylinder (4), the slide cylinder (4) is provided with an adjusting mechanism for adjusting the relative distance between the drill bit (1) and the end face of the slide cylinder (4), the drill bit (1) is provided with a cooling hole (20) for facilitating heat dissipation of the drill bit; The adjusting mechanism comprises a telescopic rod (7) fixedly installed in the slide cylinder (4), a pulling rod (8) fixedly installed on one side of the telescopic rod (7), a pull block (9) slidably installed on the pulling rod (8), a clamping column (6) fixedly installed on the telescopic rod (7), a connecting column (5) fixedly installed on the clamping column (6), a rotating plate (15) rotatably installed on the clamping column (6), four pairs of hinge elements (16) fixedly installed on the rotating plate (15), a T-shaped block (17) rotatably installed on the hinge element (16), a clamping block (19) slidably installed on the clamping column (6), the clamping block (19) is provided with a T-shaped groove (18), the T-shaped block (17) is slidably installed in the T-shaped groove (18), and the slide cylinder (4) is provided with a plurality of clamping grooves (11) matched with the clamping block (19).

2. The eccentric alloy drill of claim 1 wherein, The upper side of the clamping handle (2) is polygonal, and the upper end face of the clamping handle (2) is provided with a round corner for convenient installation.

3. The eccentric alloy drill of claim 1 wherein, The drill bit (1) is fixedly installed with a triangular block (3) at one end, the tip of the triangular block (3) is located on the extended line of the axis of the drill bit (1), and the cooling hole (20) is located on the triangular block (3).

4. The eccentric alloy drill of claim 1 wherein, The bottom plate of the clamping column (6) is provided with four sliding grooves (14) for sliding the clamping block (19), the slide cylinder (4) is provided with a sliding hole (10) for the pull block (9) to pass through, and one end of the pull block (9) is provided with a plurality of anti-skid grooves.

5. The eccentric alloy drill of claim 1 wherein, The slide cylinder (4) is provided with a rectangular groove (12), the drill bit (1) is fixedly installed with a rectangular block (13), and the rectangular block (13) is slidably installed in the rectangular groove (12).

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