CN211788125U - Vertical bamboo flute inner diameter shaping through section long drill - Google Patents

Abstract

The utility model discloses a moulding logical festival of vertical bamboo flute internal diameter bores long, including the drilling rod and fix the drill bit at the drilling rod end, the drill bit includes the cutter body of plate body structure, and the both sides limit of cutter body is crossing and the intersection point forms most advanced, and the most advanced position of cutter body is on drilling rod axle center extension line, and the cutter body is crossing to form most advanced both sides along drilling rod axle center extension line symmetry, and is close to the direction of drilling rod gradually along drilling rod axle center extension line, and the width grow gradually of cutter body is equipped with the cutting edge face that begins in different side terminal surfaces together on two faces of cutter body respectively, and the cutting edge face on two faces of cutter body has a thickness. This moulding logical festival of vertical bamboo flute internal diameter is bored long, and there is the contact in the terminal surface and the bamboo inner wall on the cutter body of drill bit plate body structure both sides limit, and the cutter body does not fill with the bamboo inner chamber, and the cutter body still leaves great space with the bamboo inner wall, makes things convenient for the discharge of bits end, guarantees to go to save smooth-going, swift, not locking.

Description

Vertical bamboo flute inner diameter shaping through section long drill

Technical Field

The utility model relates to a drilling utensil technical field especially relates to a moulding logical festival of vertical bamboo flute internal diameter long drill.

Background

Bamboo is made into the vertical bamboo flute, and the vertical bamboo flute is required to be subjected to the procedures of roasting, straightening, root grinding, joint opening, inner chamber grinding, opening, hole pressing, tone tuning, polishing, lacquering and the like, wherein the joint opening is to be punched through the bamboo joint. The instrument that current bamboo expert festival adopted is the fluted drill, the fluted drill is whole to be cylindric, the cutting edge is along cylindric cutter body spiral distribution, nearly seamless between fluted drill bit external diameter and the bamboo internal diameter during the expert, the inner wall laminating degree of drill bit perisporium and bamboo is higher, there is not sufficient chip removal space, so be difficult for the chip removal, the bits end is piled up and causes the drill bit locking easily, it often needs to take out the drill bit to carry out the chip removal, complex operation, waste time and energy, and the length of fluted drill bit is longer usually, and the bamboo is because of being natural thing, the hole is nonlinear line usually in it, the curved space of adjustment of several luxurious meters is allowed, the longer straight fluted drill bit of length is when boring crooked bamboo, can beat the bamboo internal diameter greatly, beat the damage even.

Disclosure of Invention

An object of the utility model is to provide a moulding festival of vertical bamboo flute internal diameter is bored entirely.

Realize the utility model discloses the technical scheme of purpose is: the utility model provides a moulding logical festival of vertical bamboo flute internal diameter bores long, include the drilling rod and fix the drill bit at the drilling rod end, the drill bit includes the cutter body of plate body structure, the both sides limit of cutter body is crossing and the intersection point forms most advanced, the most advanced position of cutter body is on drilling rod axle center extension line, the crossing both sides border drilling rod axle center extension line symmetry that forms most advanced of cutter body, and be close to the direction of drilling rod gradually along drilling rod axle center extension line, the width grow gradually of cutter body, be equipped with the cutting edge face that begins in different side terminal surfaces together on the two faces of cutter body respectively, the cutting edge face on the two faces of cutter body.

Furthermore, two side edges of the cutter body are arc-shaped and convex outwards. The utility model discloses, the both sides limit of cutter body can be sharp linear type, also can be the arc of evagination, when the both sides limit of cutter body is sharp linear type, lead to the festival in-process, the axial force that the both sides limit received is the same in each section on the axial, and when the both sides limit of cutter body is the arc of evagination, lead to the festival in-process, the axial force that the both sides limit of cutter body received near most advanced front end is great relatively, the axial force that is close to most advanced end and receives is less relatively, because the cutter body is being on a parallel with the ascending width in drilling rod axle center extension line direction, be close to the drilling rod more, it is less, intensity is weaker, therefore, the both sides limit of cutter body is reasonable for the arc of evagina.

Furthermore, two surfaces of the cutter body are respectively provided with a step surface which starts from the end surface of the side edge and is lower than the surface of the cutter body, and the cutting edge surface and the step surface on the same surface of the cutter body are respectively positioned on different side edges. The step surface lower than the surface of the cutter body is arranged, so that on one hand, the cutter body can reduce the weight, the toughness of the cutter body is increased, more space is reserved for chip removal, and the chip removal is facilitated, on the other hand, the thickness of the blade surface can be relatively thin, and the formed blade is sharper and more beneficial to joint removal.

Furthermore, the drill bit also comprises a tool handle connected with the tool body, the tool handle is coaxially connected with the drill rod, and the diameter of the tool handle is smaller than that of the drill rod. The arrangement of the tool shank with the diameter smaller than that of the drill rod can enable the side, close to the drill rod, of the tool body to have more chips, so that the chips can be removed more smoothly.

The utility model discloses moulding logical festival of vertical bamboo flute internal diameter is bored in length, and the during operation, the drill bit is rotatory, and the cutting edge face of cutter body is in the front during rotation. The shaping lead-through long drill of the vertical bamboo flute inner diameter is used for the bamboo lead-through, the end surfaces of only two side edges of the cutter body of the drill bit plate body structure are in contact with the inner wall of the bamboo, the cutter body is not filled in the inner cavity of the bamboo, a larger gap is still left between the cutter body and the inner wall of the bamboo, the discharge of scraps is convenient, smooth, quick and no locking of the scraps is ensured, the length of the cutter body of the drill bit is shorter than that of a twist drill, the drill bit is more adaptive to the lead-through section of the bent bamboo, the inner diameter of the bamboo cannot be damaged, simultaneously, the cutting edge surface of the cutter body starts from the side edge end surface and does not intersect with the surface where the cutter body is not located, thus, the cutting edge part is ensured to have certain thickness and has certain thickness, the cutting edge with high structural strength is in surface contact, the scraps drilled out from the cutting edge surface of the cutter body are not easy to scatter to the other side of the cutter, and the blade runs to the other side of the blade body, so that the friction force is increased, the phenomena of locking and internal diameter damage occur, and the joint passing is smoother.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of an inner diameter shaping through-pitch long drill of a vertical bamboo flute of the present invention;

FIG. 2 is a schematic view of a three-dimensional structure of a first view angle of a drill bit of the vertical bamboo flute inner diameter shaping through-pitch long drill of the present invention;

FIG. 3 is a schematic view of the three-dimensional structure of the drill bit of the vertical bamboo flute with the inner diameter shaping through-pitch long drill at the second viewing angle;

FIG. 4 is a schematic structural diagram of the drill bit of the vertical bamboo flute inner diameter shaping through-section long drill of the present invention in a front view;

fig. 5 is a schematic view of the overlooking structure of the drill bit of the plastic through-section long drill in the inside diameter of the vertical bamboo flute of the present invention, and the arrow in the figure indicates the rotation direction of the drill bit during operation.

Detailed Description

The following detailed description of the specific embodiments of the plastic straight-through long drill of the vertical bamboo flute inner diameter of the present invention is made with reference to the accompanying drawings:

as shown in fig. 1 to 5, a plastic joint-length drill for the internal diameter of a vertical bamboo flute, comprising a drill rod 20 and a drill bit 10 fixed with the end of the drill rod 20, wherein the drill bit 10 comprises a cutter body 1 of a plate structure, two side edges 11 of the cutter body 1 intersect and the intersection point forms a tip 12, the tip 12 of the cutter body 1 is located on the axis extension line of the drill rod 20, the two side edges 11 of the cutter body 1 intersecting and forming the tip 12 are symmetrical along the axis extension line of the drill rod 20, and gradually approach the direction of the drill rod 20 along the axis extension line of the drill rod 20, the width L of the cutter body 1 gradually increases, two plate surfaces of the cutter body 1 are respectively provided with cutting edge surfaces 13 starting from the side edge surfaces 110, and the cutting edge surfaces 13 on.

The utility model discloses the moulding festival of leading to of vertical bamboo flute internal diameter is bored long, leads to the festival to the bamboo and leads to the festival when festival, and the bamboo level is placed, and drill bit 10 extends the festival intracavity of bamboo, and then drill bit 10 is rotatory, and the cutting edge face 13 of cutter body 1 is in the front during rotation.

The utility model discloses a moulding logical festival long brill of vertical bamboo flute internal diameter, when being used for the bamboo logical festival, the cutter body 1 of drill bit 10 plate body structure only the terminal surface 110 of both sides limit 11 has the contact with the bamboo inner wall, the cutter body 1 does not fill up the bamboo inner chamber, cutter body 1 still leaves great space with the bamboo inner wall, make things convenient for the discharge of bits end, guarantee to remove the smooth-going, swift, not locking of festival, and the length of the cutter body 1 of drill bit 10 compares the fluted twist drill to be shorter, for the logical festival of crooked bamboo, it is comparatively suitable for, can not destroy the bamboo internal diameter, simultaneously, the utility model discloses cutting edge face 13 of cutter body 1 begins side edge face 110, does not intersect with the surface of non-location separately, so, guaranteed that cutting edge face 13 department has certain thickness, have the cutting edge of certain thickness, when structural strength is great, side edge face 110 is the face contact with the bamboo inner wall, the bits end that cutter body cutting edge 13 department drilled out, but timely discharge, effectively prevent that bits end from changeing with cutter body 1 together to run toward the another side of cutter body 1, thereby increase frictional force, appear locking, destroy the phenomenon of internal diameter, it makes the expert festival more smooth.

The utility model discloses moulding logical festival long brill of vertical bamboo flute internal diameter, preferably, the both sides limit 11 of cutter body 1 is the arc of evagination. The utility model discloses, both sides limit 11 of cutter body 1 can be sharp linear type, also can be the arc of evagination, when both sides limit 11 of cutter body 1 is sharp linear type, lead to the festival in-process, the axial force that both sides limit 11 received is the same in each section in the axial, and when both sides limit 11 of cutter body 1 is the arc of evagination, lead to the festival in-process, the axial force that both sides limit 11 of cutter body 1 was close to the front end of most advanced 12 and received is great relatively, the axial force that the end that is close to most advanced 12 received is less relatively, because cutter body 1 is being on a parallel with the ascending width in drilling rod 20 axle center extension line direction, be close to drilling rod 20 more, it is littleer, intensity is weaker, so, both sides limit 11 of cutter body 1 is reasonable for the arc of evagina.

The utility model discloses moulding logical festival of vertical bamboo flute internal diameter is bored in length, preferably, cutter body 1 is equipped with a surface respectively on the surface and begins in side terminal surface 110, and is less than the step face 14 on the surface of cutter body 1, and cutter body 1 is with cutting edge face 13 and step face 14 on the surface and be located different sides 11 respectively. The step surface 14 lower than the surface of the cutter body 1 is arranged, so that on one hand, the weight of the cutter body 1 can be reduced, the toughness of the cutter body 1 is increased, more space is reserved for chip removal, and the chip removal is convenient, on the other hand, the thickness of the cutting edge surface 13 can be relatively thin, and the formed cutting edge is sharper and more convenient to cut through.

The utility model discloses moulding logical festival long brill of vertical bamboo flute internal diameter, preferably, drill bit 10 still includes handle of a knife 2 of being connected with cutter body 1, handle of a knife 2 and drilling rod 20 coaxial coupling, and the diameter of handle of a knife 2 is less than the diameter of drilling rod 20. The arrangement of the tool shank 2 with the diameter smaller than that of the drill rod 20 can enable the tool body 1 to have more chip removal on the end side close to the drill rod 20, so that the chip removal is smoother.

The utility model discloses moulding logical festival of vertical bamboo flute internal diameter is bored in length mainly carries out the logical festival to the bamboo of preparation vertical bamboo flute, nevertheless is not only limited to the logical festival of bamboo, still can be used as the drilling etc. of other structures.

The utility model discloses right the utility model belongs to the technical field of the ordinary skilled person, do not deviating from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (4)

1. The utility model provides a moulding section length of leading to of vertical bamboo flute internal diameter bores, includes the drilling rod and fixes the drill bit at the drilling rod end, its characterized in that: the drill bit includes the cutter body of plate body structure, and the both sides limit of cutter body is crossing and the intersection point forms most advanced, and the most advanced of cutter body is located drilling rod axle center extension line, and the cutter body is crossing to form most advanced both sides along drilling rod axle center extension line symmetry, and is close to the direction of drilling rod gradually along drilling rod axle center extension line, and the width grow gradually of cutter body is equipped with the cutting edge face that begins in different side terminal surfaces together on two faces of cutter body respectively, and the cutting edge face on the two faces of cutter body has a thickness.

2. The inside diameter shaping universal joint long drill of the vertical bamboo flute according to claim 1, characterized in that: the two side edges of the cutter body are arc-shaped and convex outwards.

3. The inside diameter shaping universal joint long drill of the vertical bamboo flute according to claim 1, characterized in that: the two surfaces of the cutter body are respectively provided with a step surface which starts from the end surface of the side edge and is lower than the surface of the cutter body, and the cutting edge surface and the step surface on the same surface of the cutter body are respectively positioned on different side edges.

4. The inside diameter shaping universal joint long drill of the vertical bamboo flute according to claim 1, characterized in that: the drill bit further comprises a cutter handle connected with the cutter body, the cutter handle is coaxially connected with the drill rod, and the diameter of the cutter handle is smaller than that of the drill rod.

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