CN207223598U - Dental sewing machine needle bar automatic chamfering mechanism - Google Patents

Abstract

The utility model discloses a kind of dental sewing machine needle bar automatic chamfering mechanism, it includes drive shaft, edge cam, active swing arm, pivoted housing, fixing axle, driven swing arm, chute mount, tension spring, sliding block, motor and chamfering abrasive wheel.It is characterized in that：On the driving shaft, the operative end surface of edge cam is made of one section of plane and three sections of inclined-planes for the edge cam fixed setting；The fixing axle is fixed and is located on lathe bed surface, fixing axle is equipped with pivoted housing, an active swing arm and a driven swing arm are fixed with pivoted housing respectively, active swing arm is equipped with the roller being in contact with edge cam operative end surface, and the termination of driven swing arm is spherical to be in contact with sliding block end face；The chute mount is fixed on lathe bed surface, and chute mount is equipped with sliding block, and plane is fixed with motor, one end end face is equipped with tension spring on sliding block, and motor shaft is equipped with chamfering abrasive wheel.The mechanism can realize automatically moving back and forth for chamfering abrasive wheel, improve production efficiency, mitigate labor strength.

Description

Dental sewing machine needle bar automatic chamfering mechanism

Technical field

A kind of the utility model category technical field of mechanical processing, and in particular to dental sewing machine needle bar automatic chamfering mechanism.

Background technology

Dental sewing machine needle is a kind of annex of medical electric tool, its size shape is similar to embroidery needle.Since its is small, The method and technique of mechanical processing and general engineering goods are entirely different, it is that different manufacturing procedures is placed on different set It is standby to be above processed, that is, every equipment can only process a procedure, rather than an equipment clamped one time can complete it is more Procedure.In dental sewing machine needle bar chamfer machining process, bar clamping, being moved into place of cutter, chamfer machining, cutter are divided into Movement retract and dismantle this five work steps with bar.Since dental sewing machine needle bar chamfer machining surplus is very small, pure chamfer machining Work step can be completed in 1~2 second.Existing dental sewing machine needle bar chamfer machining uses single-minded rather than special equipment, both adopts With general small size lathe rather than dedicated dental sewing machine needle bar beveler machine tool, this lathe dismantled in bar clamping, cutter It is moved into place and retracts aspect and use manual control, the expenditure of time of chamfering process each time is all calculated with minute.Can See, in whole dental sewing machine needle bar chamfer machining process, the expenditure of time of this main work step of pure chamfer machining is relatively whole Process expenditure of time is very small, if by any one other auxiliary work step in current car needle bar material chamfer machining process by artificial Control is changed to automatically control, and it is completed in a few seconds, this will greatly improve dental sewing machine needle bar chamfering effect.

Particularly existing dental sewing machine needle bar chamfer machining when, being moved into place and retract of cutter is required for manually constantly The clutch handle of big pallet and middle pallet is manipulated repeatedly, ensures the vertical and horizontal feed of cutter, while must accurately be controlled each The depth of cut on a direction, worker must highly concentrate, and speed operations rhythm, and labor intensity is very big.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, propose a kind of dentistry car automatically controlled by mechanism Needle bar material automatic chamfering mechanism.

Realizing the technical solution of above-mentioned purpose is：A kind of dental sewing machine needle bar automatic chamfering mechanism, it includes drive shaft, end Face cam, active swing arm, pivoted housing, fixing axle, driven swing arm, chute mount, tension spring, sliding block, motor and chamfering abrasive wheel.Its feature It is：On the driving shaft, the fixing axle is fixed and is located on lathe bed surface, and fixing axle is equipped with for the edge cam fixed setting Pivoted housing, is fixed with an active swing arm and a driven swing arm on pivoted housing respectively；The chute mount is fixed at lathe On bed surface, chute mount is equipped with sliding block, and plane is fixed with motor, one end end face is equipped with tension spring on sliding block, on motor shaft Equipped with chamfering abrasive wheel.

Further, the operative end surface of the edge cam is made of one section of plane and three sections of inclined-planes.

Further, the active swing arm is L-type, and galianconism of the L-type swing arm away from pivoted housing one end is equipped with roller, roller and institute State the operative end surface contact of edge cam；The driven swing arm is L-type, and galianconism termination of the L-type swing arm away from pivoted housing one end is ball Shape, spherical end surface and the sliding block end contact；The long-armed length of the active swing arm L-type is less than the driven swing arm L-type Long-armed length.

Further, the chamfer angle of the angle between the sliding slot direction of chute mount and car needle bar material axis and car needle bar material It is equal.

The effect of the utility model is：A kind of dental sewing machine needle bar automatic chamfering mechanism manufactured according to such scheme can be real Existing chamfering abrasive wheel automatically moves back and forth, and improves production efficiency, mitigates labor strength.

Brief description of the drawings

Fig. 1 is the structure diagram of the utility model one embodiment.

Fig. 2 is the profile at Figure 1A-A places.

Fig. 3 is the profile stretch-out view at Figure 1B-B places.

Fig. 4 is the profile at Fig. 1 C-C.

Fig. 5 is the profile at Fig. 1 D-D.

Fig. 6 is the structure diagram under figure the utility model one embodiment working status.

Fig. 7 is edge cam solid enlarged structure schematic diagram in Fig. 1.

Fig. 8 is the cylindrical expansion enlarged drawing of edge cam working face in Fig. 1.

In figure：1. drive shaft, 2. edge cams, 3. rollers, 4. bearings, 5. active swing arms, 6. pivoted housings, 7. fixing axles, 8. Driven swing arm, 9. chute mounts, 10. tension spring bearings, 11. tension springs, 12. sliding blocks, 13. motors, 14. chamfering abrasive wheels, 15. car needle bars Material, 16. spindle chucks, 17. head of a bed gearboxes, 18 lock-screws.

Embodiment

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Fig. 1~Fig. 6, a kind of dental sewing machine needle bar automatic chamfering mechanism of the utility model, it include drive shaft 1, Edge cam 2, active swing arm 5, pivoted housing 6, fixing axle 7, driven swing arm 8, chute mount 9, tension spring 11, sliding block 12,13 and of motor Chamfering abrasive wheel 14.It is characterized in that：The edge cam 2 is fixed in drive shaft 1 by lock-screw 18, with drive shaft 1 synchronous rotary, 1 one end of drive shaft are arranged in head of a bed gearbox 17 (as shown in Figure 6), are provided by it rotary power, drive shaft 1 The other end supported (as shown in Figure 2) by the bearing 4 being fixed on lathe bed surface；The operative end surface of edge cam 2 is by one Section plane AB and three sections of inclined-plane BC, CD, DA compositions are (as shown in Figure 7, Figure 8).The fixing axle 7 is fixed and is located on lathe bed surface, Fixing axle 7 is equipped with pivoted housing 6, is fixed with an active swing arm 5 and a driven swing arm 8 on pivoted housing 6 respectively (such as Fig. 3 institutes Show), the rigid body that active swing arm 5, driven swing arm 8 and pivoted housing 6 form can be put in rotary oscillation, the active in fixing axle 7 Arm 5 is L-type, and galianconism of the L-type swing arm away from 6 one end of pivoted housing is equipped with roller 3, and roller 3 and the operative end surface of edge cam 2 connect Touch, and sliding motion therebetween is converted into rolling movement, the driven swing arm 8 is L-type, and L-type swing arm is away from pivoted housing 6 one The galianconism termination at end is spherical, and the end contact of spherical end surface and sliding block 12, there is therebetween the phase of very little during the motion To sliding, spherical end surface can reduce its resistance to sliding, and it is long-armed that the long-armed length of active swing arm 5L types is less than driven swing arm 8L types Length, to amplify movement travel caused by edge cam 2.The chute mount 9 is fixed on lathe bed surface, sliding slot The angle γ between 15 axis of sliding slot direction and car needle bar material when base 9 is installed is equal with the chamfer angle beta of car needle bar material 15 (as shown in Figure 6), chute mount 9 are equipped with sliding block 12, and plane is fixed with motor 13 on sliding block 12, and motor shaft is equipped with chamfering Emery wheel 14, sliding block 12 linear reciprocation can slide in chute mount 9.Make rotation with spindle chuck 16 due to car needle bar material 15 to transport It is dynamic, so when chamfering abrasive wheel 14 is moved at car needle bar material 15, it will carry out chamfer machining to car needle bar material 15.Sliding block 12 One end end face is equipped with tension spring 11, and the other end of tension spring 11 is arranged on the tension spring bearing 10 being fixed on lathe bed surface, to carry Retrogressing power for sliding block 12 simultaneously ensures the spherical end surface in driven swing arm 8 and the roller in sliding block end face, active swing arm 5 respectively 3 effectively contact with the operative end surface of edge cam 2.

Under the action of tension spring 11, when roller 3 is contacted with the working face AB of rotating edge cam 2,12 band of sliding block Dynamic chamfering abrasive wheel 14 retracts transfixion after sliding block 12, to provide clamping and the take-down time for car needle bar material 15；When roller 3 When being contacted with the inclined working BC or DA of rotating edge cam 2, sliding block 12 drives chamfering abrasive wheel 14 to move ahead or retreat, and makes down Angle emery wheel 14 is close or remote car needle bar material 15；From when roller 3 is contacted with the inclined working CD of rotating edge cam 2, chamfering Emery wheel 14 will carry out car needle bar material 15 chamfer machining, and inclined-plane CD and plane AB has the angle α of a very little, and the size of α depends on In the size of 14 depth of cut of chamfering abrasive wheel (allowance of car needle bar material 15) and the long-armed and driven swing arm 8 of active swing arm 5 Long-armed ratio size.

Claims (4)

1. A kind of 1. dental sewing machine needle bar automatic chamfering mechanism, it is characterised in that：It include drive shaft, edge cam, active swing arm, Pivoted housing, fixing axle, driven swing arm, chute mount, tension spring, sliding block, motor and chamfering abrasive wheel；The edge cam is fixed at In drive shaft, the fixing axle is fixed and is located on lathe bed surface, and fixing axle is equipped with pivoted housing, and one is fixed with respectively on pivoted housing Active swing arm and a driven swing arm；The chute mount is fixed on lathe bed surface, and chute mount is equipped with sliding block, sliding Plane is fixed with motor on block, one end end face is equipped with tension spring, and motor shaft is equipped with chamfering abrasive wheel.
2. A kind of 2. dental sewing machine needle bar automatic chamfering mechanism according to claim 1, it is characterised in that：The edge cam Operative end surface be made of one section of plane and three sections of inclined-planes.
3. A kind of 3. dental sewing machine needle bar automatic chamfering mechanism according to claim 1, it is characterised in that：The active swing arm For L-type, galianconism of the L-type swing arm away from pivoted housing one end is equipped with roller, and roller is contacted with the operative end surface of the edge cam；Institute It is L-type to state driven swing arm, and galianconism termination of the L-type swing arm away from pivoted housing one end is spherical, spherical end surface and the sliding block end face Contact；The long-armed length of the active swing arm L-type is less than the long-armed length of the driven swing arm L-type.
4. A kind of 4. dental sewing machine needle bar automatic chamfering mechanism according to claim 1, it is characterised in that：The cunning of chute mount Angle between groove direction and car needle bar material axis is equal with the chamfer angle of car needle bar material.