CN206230115U - Machine tap with internal swarf passage - Google Patents

Abstract

The utility model discloses a kind of machine tap with internal swarf passage,Belong to hole processing tool design manufacturing technology field,Including blade and shank,Blade and the integrated connection of shank,Blade includes the cutting cone of integrally connected successively,Correction unit and guide part,It is characterized in that be provided with the appearance bits hole of chip can be stored at blade center,Blade is provided with through hole with shank junction center,Cooling Holes are symmetrically arranged with the middle part of shank,Hold bits outer end of hole to be connected with the blade of cutting cone,Through hole one end communicates with bits hole is held,The other end is communicated with Cooling Holes,The beneficial effects of the utility model are,Holding bits hole can store chip,Avoid damage of the chip to machined flank,Cooling Holes are arranged on shank middle part,On the one hand the difficulty of processing of cutter is reduced,The operation of another aspect shank more facilitates,Coolant can be realized to tool shank and the fast cooling of blade,Reduce the damage of shank and blade.

Description

Machine tap with internal swarf passage

Technical field

The utility model is related to machine tools technical field, more particularly a kind of to be applied to major diameter, high accuracy Hole processing machine tap with internal swarf passage.

Background technology

The production and processing of screwed hole frequently with cutter be screw tap, typically considered to be worth doing using content for the screwed hole that is relatively large in diameter Screw tap is processed, and after existing machine tap with internal swarf passage machines screw thread, withdrawal is also easy to produce tipping phenomenon, not only damaged content bits Screw tap, while the machining accuracy of bow and arrow is also reduced, therefore, the utility model of Patent No. ZL201020286834.0 is disclosed A kind of shell type hollow-center tap, annular array sets eight teeth on cutter hub bottom face, sets 7 ° of the anterior angle of each tooth, positive sword and inclines 14 ° of angle, 18 ° of the anti-basil, screw tap is damaged and workpiece caused by solving the tipping phenomenon produced during existing machine tap with internal swarf passage withdrawing The low technical problem of machining accuracy.

Existing machine tap with internal swarf passage is generally used for processing big specification machinery, and it easily produces substantial amounts of heat in process Amount, if radiating can produce damage to cutter not in time, commonly uses cool-down method by the way of outer spray coolant, but this method drops Temp effect is not good enough, and the method that the structure that above-mentioned patent document is provided is used is to open up interior cold on cutter head with cutter hub intersection outer wall But hole, this structure coolant flow is short, poor to shank section potential drop temp effect, have that cooling effect is not good enough, difficulty of processing is higher, The problems such as using inconvenience.

The content of the invention

In order to solve the above problems, it is low, easy to use that the utility model provides a kind of good cooling results, difficulty of processing Machine tap with internal swarf passage.

The utility model is by the technical scheme that solution its technical problem is used：Machine tap with internal swarf passage, including blade and handle Portion, the blade and the integrated connection of shank, the blade include the cutting cone of integrally connected, correction unit and guiding successively Portion, it is characterised in that being provided with the blade center can store the appearance bits hole of chip, blade is provided with shank junction center Through hole, is symmetrically arranged with Cooling Holes in the middle part of shank, and the appearance bits outer end of hole is connected with the blade of cutting cone, the through hole one End is communicated with bits hole is held, and the other end is communicated with Cooling Holes.

The beneficial effects of the utility model are that the appearance bits hole of setting can store chip, it is to avoid chip is to machined screw thread The damage in face, Cooling Holes are arranged on shank middle part, on the one hand reduce the difficulty of processing of cutter, and another aspect shank is operated more It is convenient, can realize that coolant, to tool shank and the fast cooling of blade, reduces the damage of shank and blade.

Brief description of the drawings

Fig. 1 is main structure diagram of the present utility model.

In figure：1. blade, 2. shank, 3. cutting cone, 4. correction unit, 5. guide part, 6. holds bits hole, 7. through hole, 8. cools down Hole.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings and examples.

As shown in figure 1, machine tap with internal swarf passage, including blade 1 and shank 2, blade 1 and the integrated connection of shank 2, blade 1 Including cutting cone 3, correction unit 4, guide part 5, cutting cone 3, correction unit 4 and guide part 5 integrally connected successively, the center of blade 1 is opened There is the appearance bits hole 6 that can store chip, blade 1 is provided with through hole 7, holds bits hole 6 and the coaxial line of through hole 7 with the junction center of shank 2, Be symmetrically arranged with Cooling Holes 8 at the middle part of shank 2, wherein hold the bits outer end of hole 6 be connected with the blade of cutting cone 3, the one end of through hole 7 and Hold bits hole 6 to communicate, the other end is communicated with Cooling Holes 8；

Preferably, cooling bore dia described in the utility model is set to the twice that standard content considers screw tap Cooling Holes to be worth doing.

When in use, the chip that cutting edge is reamed is imported into the appearance bits hole 6 at screw tap center, chip and machined screw thread table Face keeps apart, and machined screw thread on workpiece is no longer influenceed by chip, and Cooling Holes 8 are symmetricly set on the middle part of shank 2, on the one hand drop The low difficulty of processing of cutter, another aspect shank 2 is operated and more facilitated, and two directions' inputing coolant is along with the Cooling Holes for expanding 8 diameters, increase coolant rate, and flow is longer, and coolant flows through shank 2 and blade 1 successively, and coolant can be realized to knife The fast cooling of tool shank 2 and blade 1, reduces the damage of shank 2 and blade 1, extends cutter life.

Claims (1)

1. machine tap with internal swarf passage, including blade（1）And shank（2）, the blade（1）And shank（2）Integrated connection, the sword Portion（1）Cutting cone including integrally connected successively（3）, correction unit（4）And guide part（5）, it is characterised in that in the blade （1）Center is provided with the appearance bits hole that can store chip（6）, blade（1）With shank（2）Junction center is provided with through hole（7）, in handle Portion（2）Middle part is symmetrically arranged with Cooling Holes（8）, it is described to hold bits hole（6）Outer end and cutting cone（3）Blade at be connected, it is described logical Hole（7）One end and appearance bits hole（6）Communicate, the other end and Cooling Holes（8）Communicate.