CN209903612U - Drilling tool for graphite drilling machine - Google Patents

Abstract

The utility model discloses a drilling tool for a graphite drilling machine, belonging to the field of graphite processing; the main points of the technical scheme are that the drilling machine comprises a drilling machine body and a cutter arranged on the drilling machine body, the cutter comprises a drill bit and a boring cutter arranged above the drill bit, the axes of the drill bit and the boring cutter are overlapped, and the drill bit and the boring cutter are detachably connected. The utility model provides a milling needs the relocation to the inner wall to the hole, leads to the problem that graphite piece machining precision descends easily, has reached and can directly mill to the hole, does not need the relocation, improves machining precision's effect.

Description

Drilling tool for graphite drilling machine

Technical Field

The utility model relates to a graphite processing field, more specifically the theory that says so, it relates to a drilling tool for graphite drilling machine.

Background

The mould is basic technological equipment widely used in industrial production, and the mould industry is the basic industry of national economy. In modern industrial production, product parts are widely formed by stamping, forging forming, die-casting forming, extrusion forming, plastic injection or other forming processing methods, and are matched with forming dies to form and process blanks into parts meeting the product requirements; graphite is becoming the material of choice for mold fabrication due to its good physical and chemical properties.

Now can refer to the chinese utility model patent that the grant bulletin number is CN207874588U, it discloses a graphite drilling machine, and its technical scheme main points are including the frame that plays support and connection, set up drilling equipment on frame top and set up the clamping device in drilling equipment below, the frame is including setting up the table surface in clamping device below, clamping device is including setting up the tight seat of clamp on table surface, setting up the clamping mechanism who is used for pressing from both sides tight graphite and with clamping mechanism complex fixed splint on pressing from both sides tight seat, clamping mechanism is including pressing from both sides tight piece and screw rod, fixed splint include with press from both sides the fixed cushion of tight seat, with the elastic head that the cushion cooperation slided. And an elastic member disposed between the elastic pad and the elastic head. The utility model discloses solid fixed splint clip graphite with pressing from both sides tight piece, nevertheless because the contact surface of solid fixed splint and graphite is a plurality of elasticity heads, is provided with the cushion between elasticity head and the cushion, so solid fixed splint can press from both sides the graphite of different unsmooth degrees tightly, and do not harm the graphite.

When a graphite mold is machined, a hole needs to be drilled in a graphite block, after the hole is drilled, the inner wall of the hole needs to be milled, the smoothness of the inner wall of the hole is improved, the mold is placed on a milling machine to be milled after the hole is drilled, but the graphite mold needs to be repositioned in the conventional method, deviation easily occurs in the positioning process, and the machining precision of the graphite mold is affected.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a drilling cutter for graphite drilling machine, its work of having realized drilling simultaneously and milling through new drilling cutter does not need the relocation, improves graphite jig machining precision's purpose.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a drilling cutter for graphite drilling machine, includes the drilling machine main part and installs the cutter in the drilling machine main part, and the cutter includes the drill bit and is in the boring cutter of drill bit top, and the axis coincidence of drill bit and boring cutter, and the connection can be dismantled to drill bit and boring cutter.

Through adopting above-mentioned technical scheme, the drill bit on the cutter drills the graphite block, then the boring cutter that is located the drill bit top mills the inner wall in hole to need not reposition the graphite block, can not take place to fix a position the problem that takes place the deviation, thereby can increase the precision of graphite block processing.

The utility model discloses further set up to: the boring cutter comprises a cutter bar and a plurality of groups of cutting edges arranged on the cutter bar, the cutting edges are uniformly distributed along the axis of the cutter bar, each group of cutting edges comprises a plurality of blades, and the blades are uniformly distributed around the axis of the cutter bar.

Through adopting above-mentioned technical scheme, the inner wall milling effect that the multiunit cutting edge was to the hole is better to improve the machining precision in hole.

The utility model discloses further set up to: the cutter bar is characterized in that a plurality of integrally formed bulges are arranged on the circumferential surface of the cutter bar, the thicknesses of the bulges are sequentially increased from bottom to top, and the cutter blade is arranged on the bulges.

Through adopting above-mentioned technical scheme, can make the blade form the slope from bottom to top, and the blade that is close to the drill bit is more close to the cutter arbor, and the processing of the blade that forms the slope to the hole inner wall deepens in proper order, can not exert too big power to the inner wall of hole to avoid causing the damage to the graphite cake.

The utility model discloses further set up to: the blade is inserted with a sunk groove bolt, and the end part of the sunk groove bolt penetrates through the blade and is in threaded connection with the protrusion.

Through adopting above-mentioned technical scheme, the blade is thinner, and in the live time overlength, the blade is impaired easily, so the blade can be dismantled, is convenient for change the blade of wearing and tearing.

The utility model discloses further set up to: the side wall of the blade far away from the protrusion is an inclined surface, and the lower end of the inclined surface is close to the drill bit.

Through adopting above-mentioned technical scheme, the inclined plane on the blade can make the better cooperation of the blade that is in different vertical planes play, reaches better transition effect, makes the blade can be better grind and mill the inner wall to the hole.

The utility model discloses further set up to: the upper end fixedly connected with dead lever of drill bit, the fixed orifices that can hold the dead lever is seted up to the lower extreme of cutter arbor, has pegged graft socket head cap screw in the space between the arch, and socket head cap screw's end stretches into in the fixed orifices and fixed threaded connection.

By adopting the technical scheme, the service lives of the drill bit and the boring cutter are different, so that the drill bit and the boring cutter can be detached to replace the drill bit or the boring cutter which reaches the service life, and the connection of the fixing bolt can enable the installation or the detachment of the drill bit and the boring cutter to be more convenient and faster.

The utility model discloses further set up to: the fixed rod is sleeved with a limiting sleeve, and two ends of the limiting sleeve can be respectively contacted with the upper ends of the cutter bar and the drill bit.

Through adopting above-mentioned technical scheme, the stop collar can keep off paper drill bit and boring cutter and connect, avoids the waste material of discharge to fall on the blade of boring cutter in the drill bit course of working, avoids causing the influence to the use of blade.

The utility model discloses further set up to: the outer circumference of the limiting sleeve is a conical surface, and one end of the conical surface, which is small in diameter, is in contact with the drill bit.

Through adopting above-mentioned technical scheme, the conical surface can make drill bit exhaust waste material faster fall downwards to reduce the probability of the blade contact of waste material and boring cutter, can increase the life of blade.

To sum up, the utility model discloses compare and have following beneficial effect in prior art:

1. the cutter comprises a drill bit and a boring cutter connected to the upper end of the drill bit, after the drill bit drills the graphite block, the boring cutter can directly mill the inner wall of the hole, machine replacement and cutter replacement are not needed, and machining quality and speed can be improved;

2. the distance between the blade on the boring cutter and the cutter bar is sequentially increased from bottom to top, so that the blade is gradually graded from the bottom, the depth of the boring cutter for milling the hole wall is sequentially increased, the graphite block can be prevented from being damaged, and the processing quality is improved.

Drawings

FIG. 1 is a block diagram of an embodiment;

FIG. 2 is a structural view of a cutter in the embodiment;

fig. 3 is an exploded view of the highlighted securing rod in an embodiment.

In the figure: 1. drilling machine; 2. a cutter; 21. a drill bit; 211. fixing the rod; 22. boring cutter; 23. a cutter bar; 231. a protrusion; 232. a fixing hole; 233. a hexagon socket head cap screw; 24. a blade; 241. a blade; 242. sinking the groove bolt; 243. a bevel; 3. a limiting sleeve; 31. a conical surface.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Example (b): a drilling tool for a graphite drilling machine is shown in figures 1 and 2 and comprises a tool 2 arranged on the drilling machine 1; cutter 2 includes drill bit 21 and the boring cutter 22 of being connected with drill bit 21 upper end, and drill bit 21 can drill the graphite block, and the in-process of drilling, and boring cutter 22 can grind and mill the inner wall to accomplish the finish machining to the hole, need not change the machine again, then need not relocate, can increase the precision quality of processing, need not change different cutters, then can improve the speed of work.

As shown in fig. 2, the boring cutter 22 includes a cutter bar 23 and a plurality of sets of cutting edges 24 disposed on the cutter bar 23, the cutting edges 24 are uniformly distributed along the axis direction of the cutter bar 23, each set of cutting edges 24 includes a plurality of blades 241 uniformly distributed around the axis of the cutter bar 23, and the plurality of cutting edges 24 can mill the inner wall of the hole for a plurality of times, thereby improving the milling quality.

As shown in fig. 2, a plurality of protrusions 231 are fixedly connected to the circumferential surface of the cutter bar 23, a plurality of sinking groove bolts 242 are inserted into the cutter blade 241, the ends of the sinking groove bolts 242 are in threaded connection with the protrusions 231, the thicknesses of the protrusions 231 are sequentially increased, and a circle of protrusion 231 with the smallest thickness is arranged close to the drill bit 21, so that the cutter edge 24 has a gradient from bottom to top, the machining depth of the cutter edge 24 to the inner wall of the hole is sequentially increased, the damage probability to the graphite block and the cutter blade 241 can be reduced, the machining quality is improved, and the service life of the cutter blade 241 is prolonged; the blade 241 is bolted to the protrusion 231 in preparation for replacement of the blade 241 after the blade 241 has reached its end of life.

As shown in fig. 2, the side wall of the blade 241 far from the protrusion 231 is provided with an inclined surface 243, the lower end of the inclined surface 243 is arranged close to the drill 21, and the inclined surface 243 enables the blade 241 with gradient to have better transitivity, so that the cutting edge 24 can perform fine machining on the hole better, and the machining quality is improved.

As shown in fig. 2 and 3, the upper end of the drill bit 21 is fixedly connected with a fixing rod 211, and the lower end of the cutter bar 23 is provided with a fixing hole 232 capable of accommodating the fixing rod 211; the cutter bar 23 is inserted with an inner hexagon bolt 233, and the tail end of the inner hexagon bolt 233 extends into the fixing hole 232 to be in threaded connection with the fixing rod 211, so that the drill bit 21 and the boring cutter 22 are detachably connected, and the connection stability is better; the service lives of the drill 21 and the boring cutter 22 are different, and the drill 21 and the boring cutter 22 are detachably connected, so that the drill 21 or the boring cutter 22 reaching the service life can be replaced conveniently.

As shown in fig. 2, the fixing rod 211 is sleeved with the limiting sleeve 3, the circumferential surface of the limiting sleeve 3 is a conical surface 31, the smaller end of the diameter of the conical surface 31 is in contact with the drill bit 21, the limiting sleeve 3 can prevent the drill bit 21 from being attached to the boring cutter 22, waste materials discharged by the drill bit 21 from being in contact with the blade 241, the waste materials are prevented from influencing the blade 241, the conical surface 31 can enable the waste materials to be separated from the cutter more quickly, the probability of contact between the waste materials and the blade 241 is further reduced, and influence on the use of the blade 241 is avoided.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (8)

1. The utility model provides a drilling cutter for graphite drilling machine which characterized in that: including drilling machine (1) main part and install cutter (2) in drilling machine (1) main part, cutter (2) include drill bit (21) and be in boring cutter (22) of drill bit (21) top, and the axis coincidence of drill bit (21) and boring cutter (22), and drill bit (21) and boring cutter (22) can be dismantled and be connected.

2. The drilling tool for a graphite drilling machine according to claim 1, characterized in that: the boring cutter (22) comprises a cutter rod (23) and a plurality of groups of cutting edges (24) arranged on the cutter rod (23), the groups of cutting edges (24) are uniformly distributed along the axis of the cutter rod (23), each group of cutting edges (24) comprises a plurality of blades (241), and the blades (241) are uniformly distributed around the axis of the cutter rod (23).

3. The drilling tool for a graphite drilling machine according to claim 2, characterized in that: the cutter bar (23) is provided with a plurality of integrally formed bulges (231) on the circumferential surface, the thicknesses of the bulges (231) are sequentially increased from bottom to top, and the blades (241) are arranged on the bulges (231).

4. The drilling tool for a graphite drilling machine according to claim 3, wherein: the blade (241) is inserted with a sunk bolt (242), and the end part of the sunk bolt (242) penetrates through the blade (241) and is in threaded connection with the protrusion (231).

5. The drilling tool for a graphite drilling machine according to claim 3, wherein: the side wall of the blade (241), which is far away from the bulge (231), is an inclined surface (243), and the lower end of the inclined surface (243) is close to the drill bit (21).

6. The drilling tool for a graphite drilling machine according to claim 1, characterized in that: the upper end fixedly connected with dead lever (211) of drill bit (21), fixed orifices (232) that can hold dead lever (211) are seted up to the lower extreme of cutter arbor (23), and socket head cap screw (233) have been pegged graft in the space between arch (231), and socket head cap screw (233) end stretches into in fixed orifices (232) and fixed threaded connection.

7. The drilling tool for a graphite drilling machine according to claim 6, wherein: the fixed rod (211) is sleeved with a limiting sleeve (3), and two ends of the limiting sleeve (3) can be respectively contacted with the upper ends of the cutter bar (23) and the drill bit (21).

8. The drilling tool for a graphite drilling machine according to claim 7, wherein: the outer circumferential surface of the limiting sleeve (3) is a conical surface (31), and one end of the conical surface (31) with a small diameter is in contact with the drill bit (21).

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