CN201168791Y

CN201168791Y - Bush high speed fine boring cutter relieving main shaft

Info

Publication number: CN201168791Y
Application number: CNU2008200856642U
Authority: CN
Inventors: 毛烈平
Original assignee: HANGZHOU BUSH BEARING CO Ltd
Current assignee: HANGZHOU BUSH BEARING CO Ltd
Priority date: 2008-04-09
Filing date: 2008-04-09
Publication date: 2008-12-24
Anticipated expiration: 2018-04-09

Abstract

The utility model relates to a bush high speed precision boring cutter relieving main shaft which mainly comprises a main shaft and a shell body. A taper inner hole for moving a cutter bar and an inner round hole for moving a draw bar are arranged on the inner surface of the main shaft, wherein, an cut angle Alpha is arranged at the taper inner hole and the rotating center of the main shaft outer diameter, the taper inner hole and a center line of the main shaft outer diameter intersect at a front end face, and the draw bar is connected with the cutter bar through a pin eccentrically. The bush high speed precision boring cutter relieving main shaft has the advantages that: 1. the bush high speed precision boring cutter relieving main shaft is suitable for the mass production of product of which the inner hole needs to be processed; 2. the problem that the cutter relieving of a cutter quickly falls back and then resets after the product is processed is processed, and the reset precision is within 0.002 mm; 3. because the cutter bar shape is reasonable and scientific, the bush high speed precision boring cutter relieving main shaft has high strength cutting property; 4. the yield of the bush high speed precision boring cutter relieving main shaft is increased by 1 to 2 times than that of an ordinary boring machine tool.

Description

Lining high speed boringh cutter relieving main shaft

Technical field

The utility model relates to lining high speed boringh bed field, mainly is a kind of lining high speed boringh cutter relieving main shaft.

Background technology

Common boring lathe is when batch process needs the endoporus product processed, because the limitation of main axle structure is running up down, cutter head can not be realized the cutter relieving rewind down, so production efficiency is not high.

Summary of the invention

The utility model will solve above-mentioned existing shortcoming, and a kind of lining high speed boringh cutter relieving main shaft that improves stock-removing efficiency is provided.

The utility model solves the technical scheme that its technical problem adopts: this lining high speed boringh cutter relieving main shaft, mainly comprise main shaft and housing, on the inner surface of main shaft, be provided with and be used for the interior circular hole that tapering endoporus that knife bar moves and pull bar move, wherein tapering endoporus and main shaft external diameter pivot are provided with an angle of cut α, and the center line of tapering endoporus and main shaft external diameter intersects at front end face; Pull bar is connected by bearing pin is eccentric with knife bar.

The effect that the utility model is useful is: be applicable to that 1, batch process needs the endoporus product processed.2, solved product and processed after, the cutter cutter relieving retreats fast again and resets, reseting precision is in 0.002mm.3, this device is because the reasonable science of knife bar shape, thereby high-intensity cutting ability is arranged.4, improve 1～2 times output than general boring lathe.

Description of drawings

Fig. 1 is the utility model structural representation.

Description of reference numerals: main shaft 1, protecgulum 2, water nozzle 3, housing 4, preceding outer seal ring 5, preceding inner seal ring 6, preceding outer dottle pin 7, preceding interior dottle pin 8, clutch shaft bearing 9, preceding shelves scraper ring 10, locknut 11, back shelves scraper ring 12, second bearing 13, the interior dottle pin 14 in back, the outer dottle pin 15 in back, increasing back sealing ring 16, double-screw bolt 17, bonnet 18, nut 19, belt pulley 20, back nut 21, knife bar 22, pull bar 23, bearing pin 24, shell 25, tank hole 26, O-ring seals 27.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

As shown in Figure 1, this lining high speed boringh cutter relieving main shaft mainly comprises main shaft 1 and housing 4, and main shaft 1 end is provided with belt pulley 20, and belt pulley 20 is connected and fixed by nut 19 and back nut 21, and main shaft 1 moves in housing 4.On the inner surface of main shaft 1, be provided with and be used for the interior circular hole that tapering endoporus that knife bar 22 moves and pull bar 23 move, wherein tapering endoporus and main shaft external diameter pivot are provided with an angle of cut α, the center line of tapering endoporus and main shaft external diameter intersects at front end face, owing to rational tapering configuration is arranged, has got rid of the self-locking that knife bar moves.When main axis rotation, knife bar mobile can make the pivot of cutter head produce a side-play amount with the main axis rotation center, running up down cutter head cutter relieving rewind down, raising stock-removing efficiency thereby reach.Pull bar 23 is connected by bearing pin 24 off-centre with knife bar 22, and the top of the front and back end of described knife bar 22 and pull bar 23 is provided with O-ring seals 27, knife bar 22 and pull bar 23 is not moved can produce vibration because of running up of main shaft.

Outside the described housing 4 shell 25 is installed, is provided with tank hole 26 between housing 4 and the shell 25, water nozzle 3 and double-screw bolt 17 are fixed on the housing 4 and are connected with two ports in tank hole 26 respectively.The effect of water nozzle 3 and double-screw bolt 17 is to inject the circulation of the liquid of constant temperature, and main shaft is worked under constant temperature, guarantees running accuracy;

Outer seal ring 5 before being equipped with in the leading portion cavity that described housing 4 and main shaft 1 forms, preceding inner seal ring 6, preceding outer dottle pin 7, preceding in the protecgulum 2 of dottle pin 8, clutch shaft bearing 9 and preceding shelves scraper ring 10 and the front end by main shaft 1 lock with locknut 11 and be connected; Grade scraper ring 12, second bearing 13, the interior dottle pin 14 in back, the outer dottle pin 15 in back and increasing back sealing ring 16 also pass through bonnet 18 axial restraints of the rear end of main shaft 1 after being equipped with in the back segment cavity that housing 4 and main shaft 1 form; The support that its middle (center) bearing 9, bearing 13 run up for main shaft 1, dottle pin 14 is used to adjust the bearing clearance in preceding outer dottle pin 7, preceding interior dottle pin 8, the outer dottle pin 15 in back, the back; For preventing lubricating grease outflow, shelves scraper ring 10 before adding, back shelves scraper ring 12, add preceding outer seal ring, preceding inner seal ring 6, increasing back sealing ring 16 again; In the bearing clearance is adjusted to accuracy rating, locked by locknut 11, bonnet 18 is moving axially of rear bearing fixedly, and 2 of protecgulums are placed restrictions on moving axially of fore bearing.The utility model patent adopts the mode of end cap dismounting, has solved main shaft internal taper difficulty of processing.

In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1, a kind of lining high speed boringh cutter relieving main shaft, mainly comprise main shaft (1) and housing (4), it is characterized in that: on the inner surface of main shaft (1), be provided with and be used for the interior circular hole that tapering endoporus that knife bar (22) moves and pull bar (23) move, wherein tapering endoporus and main shaft external diameter pivot are provided with an angle of cut α, and the center line of tapering endoporus and main shaft external diameter intersects at front end face; Pull bar (23) is connected by bearing pin (24) is eccentric with knife bar (22).

2, lining high speed boringh cutter relieving main shaft according to claim 1, it is characterized in that: the top of the front and back end of described knife bar (22) and pull bar (23) is provided with O-ring seals (27).

3, lining high speed boringh cutter relieving main shaft according to claim 1, it is characterized in that: described main shaft (1) end is provided with belt pulley (20), and belt pulley (20) is connected and fixed by nut (19) and back nut (21).

4, lining high speed boringh cutter relieving main shaft according to claim 1, it is characterized in that: the outer shell (25) that is equipped with of described housing (4), be provided with tank hole (26) between housing (4) and the shell (25), water nozzle (3) and double-screw bolt (17) are fixed on the housing (4) and are connected with two ports of tank hole (26) respectively.

5, according to claim 1 or 3 or 4 described lining high speed boringh cutter relieving main shafts, it is characterized in that: be equipped with in the leading portion cavity that described housing (4) and main shaft (1) form preceding outer seal ring (5), preceding inner seal ring (6), preceding outer dottle pin (7), preceding in dottle pin (8), clutch shaft bearing (9) and preceding shelves scraper rings (10) also the protecgulum (2) of the front end by main shaft (1) lock with locknut (11) and be connected; Grade scraper ring (12), second bearing (13), the interior dottle pin (14) in back, back outer dottle pin (15) and increasing back sealing ring (16) also pass through bonnet (18) axial restraint of the rear end of main shaft (1) after being equipped with in the back segment cavity that housing (4) and main shaft (1) form.