CN209206528U - A kind of drilling machine convenient for safeguarding - Google Patents

Abstract

The utility model discloses a kind of drilling machines convenient for safeguarding, are related to drilling machine technical field, its key points of the technical solution are that including head and drill bit, the head is rotatably connected to mounting base, and mounting base is connected with the motor for being fixed on head by gear drive；The drill bit includes rotating coaxially connection and removably mandrel and outer shaft, and outer shaft and mounting base fix, and outer shaft is removably connected with blade part far from one end of mounting base.The utility model replaces entire drill bit waste material after solving the problems, such as the drill bit tipping of existing drilling machine, need to only replace to the part of drill bit, reduce waste of material, reduce cost of equipment maintenance in process.

Description

A kind of drilling machine convenient for safeguarding

Technical field

The utility model relates to drilling machine technical fields, more specifically, it is related to a kind of drilling machine convenient for safeguarding.

Background technique

Drilling machine refers to that the main lathe for processing hole on workpiece with drill bit, usual bit are main motion, and drill bit axially moves Move as feed motion, can holes drilled through, blind hole, replace special tool, can reaming, fraising or the processing such as carry out tapping.

The Chinese utility model patent that the prior art is CN203875379U with reference to Authorization Notice No., it discloses a kind of brills Hole machine, including pedestal, support frame, electric device and drill bit, support frame as described above are set on the pedestal, and the electric device is set Be placed on support frame as described above and be located above the pedestal, the drill bit be set between the electric device and the pedestal and It is connected with the electric device, wherein the drilling machine further includes positioning device, and the positioning device includes fixed plate, at least One convex column and clamping device, the fixed plate are vertically arranged on the pedestal, the convex column and the clamping device It is set on the same surface of the fixed plate, the drill bit and the convex column and the clamping device are located at the fixed plate The same side, the through-hole on workpiece engages with the convex column, and the clamping device clamps workpiece.This is practical new Type, which can be accurately positioned, to drill, but has the following disadvantages, drilling bit high-speed rotation and cutting workpiece, drill bit in use process Temperature sharply increases in portion's process, although being cooled down using coolant liquid, the blade that high temperature still will affect drill bit is strong Degree, so that tipping phenomenon can occur after a period of use for drill bit, wastes the material of drill bit bar portion if replacing entire drill bit, Increase maintenance cost.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of drilling machines convenient for safeguarding.

To achieve the above object, the utility model provides following technical solution: a kind of drilling machine convenient for safeguarding, including Head and drill bit, the head are rotatably connected to mounting base, and mounting base is connected with the motor for being fixed on head by gear drive； The drill bit includes rotating coaxially connection and removably mandrel and outer shaft, and outer shaft and mounting base fix, and outer shaft is far from mounting base One end be removably connected with blade part.

By using above-mentioned technical proposal, motor work drives mounting base rotation, and the outer shaft being fixedly connected with mounting base turns Dynamic, the blade part high speed rotation for being fixed on outer shaft end is drilled with cutting workpiece.When blade part goes out after a period of use When existing tipping, blade part that can be new by the blade part dismounting and change of damage, it is not necessary to replace entire drill bit, save material, reduce Maintenance cost.When outer shaft excessive wear occurs with use for a long time, mandrel can also be dismantled with outer shaft, what is more renewed is outer Axis saves mandrel cost.

The utility model is further arranged to: the blade part surface is equipped with diamond coating.

By using above-mentioned technical proposal, diamond hardness is high, can increase the hardness and wearability of blade part, reduction is collapsed A possibility that sword.

The utility model is further arranged to: the side channels are equipped with wearing layer.

By using above-mentioned technical proposal, outer shaft may contact with workpiece cause to wear during rotation, and wearing layer increases The wear-resisting property for having added outer shaft extends the service life of outer shaft.

The utility model is further arranged to: the mandrel inner hollow, is installed with coil pipe in mandrel, coil pipe be equipped with into The mouth of a river and water outlet.

By using above-mentioned technical proposal, water inlet can connect external cold water source, the water tank outside water outlet connection, Form circulating water circulating cooling.Drill bit temperature in boring procedure increases, the cold water heat absorption after temperature is transmitted to mandrel, in coil pipe Drill bit is cooled down, drilling life of bit is extended.

The utility model is further arranged to: helically tubulose is arranged the coil pipe.

By using above-mentioned technical proposal, helically tubulose is arranged coil pipe, increases the heat exchange between coil pipe and mandrel Area improves coil pipe endothermic effect.

The utility model is further arranged to: the coil inlets are from mandrel close to blade part one end to another end ring Around.

By using above-mentioned technical proposal, cold water is preferentially passed into mandrel from after water inlet entrance close to blade part one end, Temperature increases fast when due to blade part drilling, can be improved the cooling effect to drill bit in this way.

The utility model is further arranged to: diamond is filled between the mandrel and coil pipe.

By using above-mentioned technical proposal, diamond has splendid thermal conductivity, and the heat between mandrel and coil pipe is accelerated to pass It passs, and diamond filler increases the heat exchange area of the two, greatly increases water to drill bit cooling effect.

The utility model is further arranged to: position limiting ruler is equipped in the rack of the drilling machine, position limiting ruler one end is opposite Rack slides connection up and down, and the other end of position limiting ruler is extend into below head.

By using above-mentioned technical proposal, when head, which moves down, abuts to position limiting ruler, position limiting ruler stops head to continue Supply downwards prevents drilling depth beyond design requirement, meets new operator's operation needs.

The utility model is further arranged to: being connected with cooling tube on the position limiting ruler.

By using above-mentioned technical proposal, cooling tube sprays coolant liquid and cools down to drill bit, plays dual-cooled effect.

In conclusion the utility model has the advantages that compared with the prior art

1. the blade part of drill bit is detachably connected with outer shaft, after tipping occurs for blade part, only blade part can be carried out Replacement retains remaining intact position, and replacement is convenient and saves material, reduces maintenance cost；

2. the coil pipe in mandrel can be to cooling inside the progress of entire drill bit, cooling tube ejection coolant liquid in boring procedure Drill bit is cooled down from outside, dual-cooled reduces the heating rate of drill bit, reduces blade part because of intensity caused by heating up Decline reduces the probability that tipping occurs；

3. position limiting ruler can be pre-positioned the amount of feeding of head, bore operation is carried out convenient for new operator, is prevented out The situation of existing drilling depth excess occurs.

Detailed description of the invention

Fig. 1 is the overall structure diagram of embodiment；

Fig. 2 is the front view of Fig. 1；

Fig. 3 be show drill bit and head connection structure in Fig. 2 A-A to cross-sectional view；

Fig. 4 is the enlarged drawing for showing portion B in Fig. 3, drill bit internal mechanism；

Fig. 5 is the explosive view for showing each modular construction of drill bit.

Appended drawing reference: 1, drilling machine ontology；11, head；12, sliding slot；2, motor；3, position limiting ruler；4, cooling tube；5, drill bit； 51, outer shaft；511, limiting slot；512, positioning table；52, mandrel；53, blade part；531, location hole；54, coil pipe；541, it intakes Mouthful；542, water outlet；55, fixed block；56, bearing；6, driving gear；7, mounting base；71, gear ring；72, it perforates；73, screw thread Hole；74, fixing bolt.

Specific embodiment

A kind of drilling machine convenient for safeguarding, as depicted in figs. 1 and 2, including drilling machine ontology 1, drilling machine ontology 1 are equipped with head 11, motor 2 is installed, motor 2 and drill bit 5 are sequentially connected on head 11.Position limiting ruler 3, position limiting ruler are installed on drilling machine ontology 1 The distance that 3 limitation heads 11 are fed down；It is connected with cooling tube 4 on position limiting ruler 3, coolant liquid can be sprayed in cooling tube 4 to brill First 5 are cooled down.

With reference to Fig. 1 and Fig. 2, vertical sliding slot 12 is equipped in the frame side wall of drilling machine ontology 1.Position limiting ruler 3 is L-shaped, limit One end of 3 horizontal position of ruler is equipped with T-shaped block, and T-shaped block and 12 shape of sliding slot are adapted, and enables position limiting ruler 3 along sliding slot 12 Relative sliding.Position limiting ruler 3 is fixed by bolt and drilling machine ontology 1.The top at the vertical position of position limiting ruler 3 is abutted with head 11, sliding The side of slot 12 can be equipped with graduated scale, so as to the mobile amount of feeding for adjusting position limiting ruler 3 and determining head 11.

The end of cooling tube 4 is fixed on position limiting ruler 3, reduces the possibility of the winding of cooling tube 4.Cooling tube 4 connects outside Coolant liquid.

With reference to Fig. 3 and Fig. 4, mounting base 7 is rotatably connected to by bearing in head 11, one end of mounting base 7 is equipped with gear ring 71.The output shaft end of motor 2 is equipped with driving gear 6, and driving gear 6 is engaged with gear ring 71.

Drill bit 5 is coaxially fixed in mounting base 7, and the work of motor 2 drives driving gear 6 to rotate, and is engaged with driving gear 6 Mounting base 7 rotates, 5 high-speed rotation of drill bit being fixed in mounting base 7.

With reference to Fig. 4 and Fig. 5, it is equipped with perforation 72 in the axial direction in mounting base 7, is radially opened in the side wall of mounting base 7 Threaded hole 73 equipped with communication bores 72, threaded hole 73 are threaded with fixing bolt 74.

Drill bit 5 includes the outer shaft 51 and mandrel 52 for rotating coaxially connection, and outer shaft 51 is fixed with far from one end of mounting base 7 and cuts Blade 53.

The outline diameter of outer shaft 51 and perforation 72 are adapted, so that outer shaft 51 passes through perforation 72.Limit is equipped on outer shaft 51 Position slot 511, the end abutment of fixing bolt 74 prevent outer shaft 51 from rotating with respect to mounting base 7 in limiting slot 511 so that drill bit 5 and Mounting base 7 is firm to fix, and avoids the occurrence of the shaking of drill bit 5.In order to improve the wearability of outer shaft 51 to increase service life, outer shaft 51 It can be made of potassium steel, the surface of outer shaft 51 is coated with one layer of wearing layer, and wearing layer can be carbonitrided case.

Outer shaft 51 is equipped with positioning table 512 far from one end of mounting base 7, is equipped on blade part 53 and cooperates with positioning table 512 Location hole 531, so that blade part 53 and outer shaft 51 are coaxially disposed by positioning table 512 and the cooperation of location hole 531.Positioning table 512 is in a circular table shape, improves blade part 53 and is aligned efficiency.Blade part 53 can be bolted with outer shaft 51.It is cut to improve The surface of the processing intensity and hardness of blade 53, blade part 53 is equipped with diamond coating.

With reference to Fig. 4 and Fig. 5, mandrel 52 can be rotatablely connected with outer shaft 51 by bearing 56, the inner hollow of mandrel 52, core Coil pipe 54 is installed, coil pipe 54 can be copper pipe, thermal conductivity with higher in axis 52.Coil pipe 54 is equipped with 541 He of water inlet Water outlet 542, water inlet 541 and water outlet 542 are fixed by fixed block 55 and mandrel 52.Water inlet 541 is connected by pipeline External low-temperature water source, water outlet 542 connect external water storage box, cool down to form flowing water cooling to drill bit 5.

In order to improve cooling effect, coil pipe 54 is designed to helical tubular structure, increases the heat exchange of coil pipe 54 and mandrel 52 Area.The water inlet 541 of coil pipe 54 extend into 52 bottom of mandrel, then connects water outlet to 52 other end spiral surrounding of mandrel 542, so that water at low temperature preferentially arrives at mandrel 52 close to 53 one end of blade part, improve cooling effect.It as needed, can also be in core Diamond particles are filled inside axis 52, diamond has high thermal conductivity, and accelerate the heat between mandrel 52 and coil pipe 54 to transmit, And diamond filler increases the heat exchange area of the two, greatly increases water to 5 cooling effect of drill bit.

The working principle of one kind drilling machine convenient for safeguarding is as follows:

11 amount of feeding of head is determined according to drilling depth first, is fixed after mobile position limiting ruler 3 to suitable position.To water inlet 541 are passed through cold water, start motor 2.

The work of motor 2 drives mounting base 7 to rotate, and the drill bit 5 being fixed in mounting base 7 rotates.Due to outer shaft 51 and installation Seat 7 is fixedly connected, and mandrel 52 is rotatablely connected with outer shaft 51 by bearing 56, then outer shaft 51 drives blade part 53 to rotate cutting drilling Hole, mandrel 52 remain stationary, and prevent water inlet 541 and water outlet 542 from rotating kink.

The mobile head 11 of control, which remains a constant speed, to be fed down, and blade part 53 drills to workpiece, generates in boring procedure Frictional heat by coil pipe 54 water absorb, reduce drill bit 5 heating rate.Simultaneously cooling tube 4 spray coolant liquid to drill bit 5 into Row cooling, plays dual-cooled effect.

When head 11, which moves down, abuts to position limiting ruler 3, position limiting ruler 3 stops head 11 to continue to supply downwards, prevents from boring Hole depth exceeds design requirement, meets new operator's operation needs.

The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims (9)

1. a kind of drilling machine convenient for safeguarding, including head (11) and drill bit (5), it is characterised in that: head (11) rotation It is connected with mounting base (7), mounting base (7) is connected with the motor (2) for being fixed on head (11) by gear drive；The drill bit It (5) include rotating coaxially connection and removably mandrel (52) and outer shaft (51), outer shaft (51) and mounting base (7) fix, outer shaft (51) one end far from mounting base (7) is removably connected with blade part (53).

2. one kind according to claim 1 drilling machine convenient for safeguarding, it is characterised in that: blade part (53) surface is set There is diamond coating.

3. one kind according to claim 2 drilling machine convenient for safeguarding, it is characterised in that: outer shaft (51) surface is equipped with Wearing layer.

4. one kind according to claim 1 drilling machine convenient for safeguarding, it is characterised in that: in mandrel (52) inside Sky, mandrel (52) is interior to be installed with coil pipe (54), and coil pipe (54) is equipped with water inlet (541) and water outlet (542).

5. one kind according to claim 4 drilling machine convenient for safeguarding, it is characterised in that: the coil pipe (54) is helically managed Shape setting.

6. one kind according to claim 5 drilling machine convenient for safeguarding, it is characterised in that: coil pipe (54) water inlet (541) it is surround from mandrel (52) close to blade part (53) one end to the other end.

7. one kind according to claim 6 drilling machine convenient for safeguarding, it is characterised in that: the mandrel (52) and coil pipe (54) diamond is filled between.

8. one kind according to claim 1 drilling machine convenient for safeguarding, it is characterised in that: pacify in the rack of the drilling machine Equipped with position limiting ruler (3), position limiting ruler (3) one end slides connection up and down with respect to rack, and the other end of position limiting ruler (3) extend into head (11) lower section.

9. one kind according to claim 8 drilling machine convenient for safeguarding, it is characterised in that: connected on the position limiting ruler (3) There are cooling tube (4).