Woodworking drill bit

Abstract

The utility model discloses a woodworking drill bit which comprises a drill handle and a drill rod arranged on the drill handle, a drill bit is arranged on the drill rod, a positioning cover capable of automatically rotating is arranged on the drill rod, and the drill bit comprises tool bits which are arranged on the end face of the drill rod and evenly arranged at intervals. A positioning head is arranged at one ends of the tool bits which are combined together in a concentrated mode, expanding tools are arranged on the outer circumferential faces of the tool bits, cutting tools are arranged on one side faces of the tool bits, and the upper end faces of the tool bits and the cutting tools are connected into a whole through transition parts. The cutting head is reasonable in design, on the basis that the structure is kept simple, damage to the cutting edge on the cutting head in the high-speed running and long-time using process can be reduced, the overall rejection rate is reduced, the service life is prolonged, and the use requirement can be better met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a drilling tool technical field especially relates to a woodworking drill bit. BACKGROUND

[0002] Known drill bit is used to drill out through hole or blind hole on solid material, and can ream the existing hole, but the existing drill bit has a baffle on the blade body, so that the baffle can knock and damage the round hole or groove edge or produce rough cutting during drilling or grooving, which cannot meet the requirements of drilling or grooving, so a woodworking drill bit with cover appears, such as the Chinese utility model patent with the authorization announcement number CN221872389U, wherein the positioning cover is beneficial to avoid knocking and damaging the round edge of the drilled hole or groove and producing rough cutting problem, and is more beneficial to meet the production requirements of drilling or grooving, but the cutting edges on the cutting head are welded together, and the combination part is easily damaged due to uneven stress during long-time cutting and high-speed operation, which will cause the whole to be scrapped, greatly shorten the service life, thus cannot meet the use requirement, and it is necessary to improve according to this phenomenon. SUMMARY

[0003] (I) technical problems to be solved

[0004] In view of the defects in the prior art, the utility model provides a woodworking drill bit, which is reasonable in design, can reduce damage of the cutting edges on the cutting head during high-speed operation and long-time use on the basis of keeping simple structure, reduces the overall scrap rate, prolongs the service life, and is more beneficial to meet the use requirement.

[0005] (II) technical scheme to be adopted

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is:

[0007] A woodworking drill bit, comprising a drill handle and a drill rod arranged on the drill handle, a drill bit is arranged on the drill rod, a positioning cover capable of rotating automatically is arranged on the drill rod, the drill bit comprises knife heads arranged on the end face of the drill rod at equal intervals, a positioning head is arranged on one end of the knife heads combined together, an expanding knife is arranged on the outer circumferential surface of the knife head, a cutting knife is arranged on one side surface of the knife head, and the upper end surface of the cutting knife is connected to the knife head as a whole through a transition part.

[0008] Preferably, the transition part comprises an inclined section and a horizontal section arranged on the knife head, and the upper end surface of the cutting knife is higher than the upper end surface of the horizontal section.

[0009] Preferably, the knife head adopts two or three, and the expanding knife and the cutting knife are arranged on each knife head.

[0010] Preferably, the drill handle adopts a hexagonal prism or a cylinder.

[0011] Preferably, at least one groove is arranged on the drill handle.

[0012] Preferably, the expander comprises a seat arranged on the outer circumferential surface of the drill head, and an arrow-shaped sharp head is arranged on the seat, and the width of the sharp head is greater than the width of the seat.

[0013] Preferably, the positioning cover comprises a fixing sleeve arranged on the drill rod, the fixing sleeve is fixed on the drill rod through a fixing member, a bearing is arranged on the fixing sleeve, and a cover body is arranged on the bearing.

[0014] Preferably, the fixing sleeve is provided with a mounting position for mounting the bearing capable of rotating.

[0015] (Three) technical effects to be achieved

[0016] Compared with the prior art, the drill head has the beneficial effects that:

[0017] Firstly, the drill head comprises drill heads arranged on the end surface of the drill rod at equal intervals, a positioning head is arranged on one end of the drill heads combined together, an expander is arranged on the outer circumferential surface of the drill head, and a cutting tool is arranged on one side surface of the drill head, the upper end surface of the drill head and the cutting tool are connected as a whole through a transition part, the design is reasonable, the cutting edge on the cutting head can be reduced in damage in high-speed operation and long-time use, the overall scrappage rate is reduced, the service life is prolonged, and the use requirement is more favorably met.

[0018] Secondly, the drill head comprises drill heads arranged on the end surface of the drill rod at equal intervals, a positioning head is arranged on one end of the drill heads combined together, an expander is arranged on the outer circumferential surface of the drill head, and a cutting tool is arranged on one side surface of the drill head, which can not only realize rapid positioning, but also is favorable for cutting and hole expansion, and can more favorably meet the requirement of drilling. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the utility model.

[0020] Figure 2 It is Figure 1 It is a local enlarged schematic view of A in the middle.

[0021] Figure 3 It is an explosion schematic view of the utility model.

[0022] Figure 4 It is a fixing sleeve and fixing member installation schematic view of the utility model.

[0023] Figure 5 It is the schematic view of the first embodiment of the utility model.

[0024] Figure 6 It is the schematic view of the second embodiment of the utility model.

[0025] Figure 7 It is the schematic view of the third embodiment of the utility model.

[0026] Figure 8 It is the schematic view of the fourth embodiment of the utility model.

[0027] Figure 9 It is the schematic view of the fifth embodiment of the utility model.

[0028] Figure 10 It is the schematic view of the sixth embodiment of the utility model.

[0029] Figure 11 It is the schematic view of the seventh embodiment of the utility model.

[0030] Figure 12 It is the schematic view of the eighth embodiment of the utility model.

[0031] Figure 13 It is the schematic view of the ninth embodiment of the utility model.

[0032] In the figure: 1, drill handle;2, drill rod;3, drill bit;4, positioning cover;11, recess;31, cutter head;32, positioning head;33, expanding cutter;34, cutting tool;35, transition part;41, fixed sleeve;42, fixing piece;43, bearing;44, cover body;331, seat body;332, sharp head;351, inclined section;352, horizontal section;411, installation site. DETAILED DESCRIPTION

[0033] In the description of the utility model, it needs to be explained that when the element is called "fixed to" or "set to" another element, it can be directly on another element or indirectly on another element. When an element is called "connected to" another element, it can be directly connected to another element or indirectly connected to another element.

[0034] In the description of the utility model, it needs to explain, the term "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on the direction or position relation indicated is based on the direction or position relation shown in the drawing, or it is the direction or position relation that the utility model product uses usually places, just is for the convenience of describing the utility model and simplifying the description, and is not the indication or the implied device or element that the indicated device or element must have a particular direction, constructs and operates, therefore can not be understood as the limitation to the utility model. In addition, the term "first", "second", "third" and so on are only used to distinguish the description, and can not be understood as the indication or the implied relative importance. Therefore, the feature that is limited to "first", "second" can be explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or two or more, unless otherwise specifically limited. The meaning of "several" is one or more, unless otherwise specifically limited.

[0035] In the description of the utility model, it also needs to explain that, unless otherwise specifically defined and limited, the term "set", "installation", "connection", "connection" should be broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through the intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0036] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below through the drawings and examples. However, it should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0037] Example one: refer to Figures 1 to 13The utility model provides a woodworking drill bit, including drill handle 1 and the drill rod 2 of setting on drill handle 1, be provided with drill bit 3 on drill rod 2, be provided with the positioning cover 4 of automatic rotation on drill rod 2, drill bit 3 includes the even spacing arrangement of setting on the end surface of drill rod 2 cutter head 31, the one end of the cutter head 31 that is combined together sets up the positioning head 32, the outer circumferential surface of cutter head 31 sets up the cutter 33, the one side surface of cutter head 31 sets up cutting tool 34, and the upper end surface of cutter head 31 is connected as a whole with cutting tool 34 through transition part 35, this kind of setting can realize cutting tool upper cutting edge 34 reduction in high -speed operation and long -time use process damage, reduces the overall scrap rate, prolongs the service life, is more favorable to satisfy the use demand.

[0038] Example two: can be based on example one, as shown in Figure 2 And Figure 3 Transition part 35 includes the inclined section 351 of setting on cutter head 31 and horizontal section 352, the upper end surface of cutting tool 34 is higher than the upper end surface of horizontal section 352, this kind of ladder -like setting, not only can play the transition effect, and force is more uniform, avoids the scrap, greatly prolongs the service life, can satisfy the use demand more.

[0039] Example three: can be based on example one or example two, as shown in Figures 1 to 13 Cutter head 31 adopts two or three, and the cutter 33 and cutting tool 34 are arranged on each cutter head 31, and this kind of setting type is various, and the selection margin is large.

[0040] Example four: can be based on example one or example two or example three, as shown in Figures 1 to 13 Drill handle 1 adopts six prism or cylinder, and this kind of setting type is various, and the selection margin is large. Further, at least one recess 11 is arranged on the drill handle 1, and this kind of setting is favorable for the fixed connection with external equipment.

[0041] Example five: can be based on example one or example two or example three or example four, as shown in Figure 2 Cutter 33 includes the seat body 331 of setting on the outer circumferential surface of cutter head 31, the arrowhead-shaped sharp head 332 is arranged on the seat body 331, and the width of the sharp head 332 is greater than the width of the seat body 331, which is favorable for improving the firmness of the structure and improving the effect of cutting and expanding.

[0042] Example six: can be based on example one or example two or example three or example four or example five, as shown in Figure 1 , Figure 3 And Figure 4As shown, the positioning cover 4 comprises a fixing sleeve 41 arranged on the drill rod 2, the fixing sleeve 41 is fixed on the drill rod 2 through a fixing piece 42, the fixing sleeve 41 is provided with a bearing 43, the bearing 43 is provided with a cover body 44, so that the cover body 44 rotates with the bearing 43, which is beneficial to reduce the resistance in the use process of the utility model. Further description, the fixing sleeve 41 is provided with a mounting position 411 for mounting the bearing 43 to rotate, which is reasonable, convenient for the installation of the bearing 43, and can also make the bearing 43 rotate. In the embodiment, the fixing piece 42 is a screw or a bolt, which is convenient for disassembly and installation.

[0043] The standard parts used in the present application can be purchased from the market, and the specific connection mode of each part adopts the conventional means such as bolt, rivet and the like in the prior art, which will not be described in detail here.

[0044] It should be noted that although the above embodiments have been described in the present text, the patent protection scope of the utility model is not limited thereby. Therefore, based on the innovative concept of the utility model, the changes and modifications of the embodiments described in the present text, or the equivalent structure or equivalent process transformation made by using the contents of the utility model specification and drawings, directly or indirectly apply the above technical solutions to other related technical fields, are all included in the protection scope of the utility model patent.

Claims

1. A wood drill comprising a shank (1) and a drill rod (2) arranged on the shank (1), a drill head (3) being arranged on the drill rod (2), a positioning cap (4) being arranged on the drill rod (2) and being capable of automatic rotation, characterized in that: The drill bit (3) comprises evenly spaced cutter heads (31) arranged on the end face of the drill rod (2), the cutter heads (31) are integrally combined with a positioning head (32) arranged on one end of the cutter heads (31), an expander (33) is arranged on the outer circumferential surface of the cutter heads (31), a cutting blade (34) is arranged on one side surface of the cutter heads (31), and the upper end surface of the cutter heads (31) and the cutting blade (34) are integrally connected by a transition part (35).

2. The woodworking drill bit of claim 1, wherein: The transition part (35) comprises an inclined section (351) and a horizontal section (352) arranged on the cutter heads (31), and the upper end surface of the cutting blade (34) is higher than the upper end surface of the horizontal section (352).

3. A woodworking drill according to claim 1 or 2, characterised in that: The cutter heads (31) are two or three, and the expander (33) and the cutting blade (34) are arranged on each cutter head (31).

4. A woodworking drill according to claim 1 or 2, characterised in that: The drill handle (1) is a hexagonal prism or a cylinder.

5. A woodworking drill bit as claimed in claim 4 wherein: At least one groove (11) is arranged on the drill handle (1).

6. A woodworking drill according to claim 1 or 2 or 4, wherein: The expander (33) comprises a seat body (331) arranged on the outer circumferential surface of the cutter heads (31), and an arrow-shaped sharp head (332) is arranged on the seat body (331), wherein the width of the sharp head (332) is greater than the width of the seat body (331).

7. A woodworking drill according to claim 1 or 2 or 4, wherein: The positioning cover (4) comprises a fixing sleeve (41) arranged on the drill rod (2), the fixing sleeve (41) is fixed on the drill rod (2) by a fixing part (42), a bearing (43) is arranged on the fixing sleeve (41), and a cover body (44) is arranged on the bearing (43).

8. A woodworking drill bit as claimed in claim 7 wherein: The fixing sleeve (41) is provided with a mounting position (411) for mounting the bearing (43) to be rotatable.

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