CN218575018U

CN218575018U - Expansion mandrel of precision machinery

Info

Publication number: CN218575018U
Application number: CN202221687385.XU
Authority: CN
Inventors: 谭习旺; 陈伟灿
Original assignee: Foshan Yunfeng Precision Machinery Co ltd
Current assignee: Foshan Yunfeng Precision Machinery Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2023-03-07
Anticipated expiration: 2032-07-01

Abstract

The utility model relates to the technical field of machine manufacturing and discloses an expansion mandrel of precision machinery; the rotating rod drives the rotating disc to rotate, then the rotating disc can drive the sliding rod to slide in the arc-shaped groove, and the supporting plate can lift the fixed plate after sliding in the placing groove, so that the effect of uniform stress of the mechanical expansion mandrel can be realized when the mechanical expansion mandrel fixes a workpiece, the stability of the mechanical expansion mandrel when fixing the workpiece is improved, and the fixing effect is improved; drive the fixture block through rotating movable core axle and slide in the inside of draw-in groove, make telescopic link and spring shrink to make the fixture block can break away from the inside of draw-in groove, then with the setting that movable core axle was taken out from the inside of inflation dabber, reached the purpose that mechanical type inflation dabber can conveniently be dismantled, thereby improve the maintenance efficiency of inflation dabber, increase the practicality of inflation dabber.

Description

Expansion mandrel of precision machinery

Technical Field

The utility model relates to a machine-building technical field specifically is an expansion core axle of precision machinery.

Background

When gear and other cast work pieces are processed in the machining field, need use the inflation dabber to fix the work piece, current inflation dabber mainly has the pneumatic type, fluid pressure type and mechanical type, wherein pneumatic type and fluid pressure type can guarantee that the atress when the work piece is fixed is even, but its structure is complicated, high in manufacturing cost, the maintenance is difficult, and it is also comparatively troublesome to use, and current mechanical type inflation dabber can only accomplish to fix the work piece, but the work piece atress is not even, make the inflation dabber to the fixed effect of work piece relatively poor, simultaneously the inside drive mechanism structure of inflation dabber is small and exquisite accurate, and current mechanical type inflation dabber uses screw thread or bolt to connect basically, when internal drive mechanism breaks down, inconvenient dismantles the maintenance to the inflation dabber, and if bolted connection still need use tools such as bottle opener, screwdriver, the maintenance efficiency of inflation dabber can be influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an expansion core axle of precision machinery possesses the even and convenient to detach's of atress advantage, has solved the above-mentioned relatively poor and inconvenient problem of repairing of dismantling the expansion core axle of the fixed effect of current mechanical type expansion core axle to the work piece.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an expansion core axle of precision machinery, includes the expansion core axle, one side of expansion core axle is provided with the activity dabber, the top and the equal fixedly connected with telescopic link in bottom of activity dabber, the surface cover of telescopic link is equipped with the spring, standing groove and draw-in groove have been seted up respectively to the inside of expansion dabber, one side welding that the telescopic link was kept away from each other has the fixture block with the draw-in groove joint, the inside of expansion dabber rotates through the bearing and is connected with the bull stick, the fixed surface cover of bull stick has connect the carousel, the arc wall has been seted up to the inside of carousel, the inside sliding connection of arc wall has the slide bar, one side fixedly connected with of slide bar has the backup pad with standing groove sliding connection, one side welding that the bull stick was kept away from to the backup pad has the fixed plate.

Preferably, the top of the fixing plate is provided with anti-skid grains.

Preferably, the internal thread of the expansion mandrel is connected with a screw, and one side of the screw is welded with a prismatic rod which is connected with the rotating rod in a sliding manner.

Preferably, the other side of the screw is fixedly connected with a rotating plate, and an anti-skid sleeve is sleeved on the surface of the rotating plate.

Preferably, a groove matched with the clamping block for use is formed in one side, close to the movable mandrel, of the expansion mandrel.

Preferably, the expansion mandrel and the movable mandrel are connected in a sliding and rotating manner.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model realizes the setting that the support plate can lift the fixed plate after the support plate slides in the placing groove after the rotating rod drives the rotating disc to rotate and then the rotating disc can drive the sliding rod to slide in the arc-shaped groove, thereby realizing the effect of uniform stress when the mechanical expansion mandrel fixes the workpiece, thereby improving the stability of the mechanical expansion mandrel when fixing the workpiece and improving the fixing effect;

the utility model discloses a rotating movable core axle and driving the fixture block and slide in the inside of draw-in groove, making telescopic link and spring shrink to make the fixture block can break away from the inside of draw-in groove, then with the setting that movable core axle was taken out from the inside of expansion core axle, reached the purpose that mechanical type expansion core axle can conveniently be dismantled, thereby improve expansion core axle's maintenance efficiency, increase expansion core axle's practicality.

Drawings

FIG. 1 is a sectional view of the present invention;

FIG. 2 is a schematic side sectional view of the turntable of the present invention;

fig. 3 is the schematic side sectional view of the telescopic rod of the present invention.

In the figure: 1. an expansion mandrel; 2. a movable mandrel; 3. a telescopic rod; 4. a spring; 5. a clamping block; 6. a placement groove; 7. a card slot; 8. a rotating rod; 9. a turntable; 10. an arc-shaped slot; 11. a slide bar; 12. a support plate; 13. A fixing plate; 14. anti-skid lines; 15. a prismatic bar; 16. a screw; 17. rotating the plate; 18. an anti-slip sleeve; 19. And (4) beveling.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Please refer to fig. 1, fig. 2 and fig. 3, an expansion mandrel for precision machinery, including expansion mandrel 1, one side of expansion mandrel 1 is provided with movable mandrel 2, the top and the bottom of movable mandrel 2 are fixedly connected with telescopic rod 3, the surface cover of telescopic rod 3 is equipped with spring 4, standing groove 6 and draw-in groove 7 have been seted up respectively to expansion mandrel 1's inside, one side welding that telescopic rod 3 kept away from each other has fixture block 5 with draw-in groove 7 joint, expansion mandrel 1's inside is rotated through the bearing and is connected with bull stick 8, the fixed surface of bull stick 8 has cup jointed carousel 9, arc wall 10 has been seted up to carousel 9's inside, the inside sliding connection of arc wall 10 has slide bar 11, one side fixedly connected with of slide bar 11 has with standing groove 6 sliding connection's backup pad 12, one side welding that the bull stick 8 was kept away from to backup pad 12 has fixed plate 13.

Furthermore, the top of the fixing plate 13 is provided with anti-slip threads 14, and the friction force when fixing the workpiece can be increased by arranging the anti-slip threads 14.

Furthermore, the internal thread of the expansion mandrel 1 is connected with a screw rod 16, one side of the screw rod 16 is welded with a prismatic rod 15 which is connected with the rotating rod 8 in a sliding manner, and the prismatic rod 15 can drive the rotating rod 8 to rotate by rotating the screw rod 16 and can slide in the rotating rod 8. So that the turning lever 8 does not move.

Furthermore, the other side of the screw 16 is fixedly connected with a rotating plate 17, an anti-slip sleeve 18 is sleeved on the surface of the rotating plate 17, and the screw 16 can be rotated more conveniently by matching the rotating plate 17 with the anti-slip sleeve 18.

Furthermore, a groove 19 matched with the clamping block 5 for use is formed in one side, close to the movable core shaft 2, of the expansion core shaft 1, and the movable core shaft 2 can slide into the expansion core shaft 1 conveniently by arranging the groove 19.

Further, the expansion mandrel 1 and the movable mandrel 2 are connected in a sliding and rotating manner.

The working principle is as follows: when the user needs to carry out stable support with the work piece fixedly, at first rotate through making bull stick 8 in the inside of inflation dabber 1, thereby can drive carousel 9 and rotate, then drive slide bar 11 through carousel 9 and slide in the inside of arc wall 10, make backup pad 12 can slide the back in the inside of standing groove 6 and carry out diffusion formula lifting and fix at the work piece inner wall with fixed plate 13 from the surface of inflation dabber 1 can, when the user needs open the inflation dabber, only need drive fixture block 5 through rotating activity dabber 2 and slide in the inside of draw-in groove 7, make telescopic link 3 and spring 4 shrink, thereby make fixture block 5 can break away from the inside of draw-in groove 7, and take out activity dabber 2 from the inside of inflation dabber 1 can.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An expansion mandrel for precision machinery, comprising an expansion mandrel (1), characterized in that: one side of inflation dabber (1) is provided with movable dabber (2), the top and the equal fixedly connected with telescopic link (3) in bottom of movable dabber (2), the surface cover of telescopic link (3) is equipped with spring (4), standing groove (6) and draw-in groove (7) have been seted up respectively to the inside of inflation dabber (1), one side welding that telescopic link (3) kept away from each other has fixture block (5) with draw-in groove (7) joint, the inside of inflation dabber (1) rotates through the bearing and is connected with bull stick (8), the fixed surface of bull stick (8) has cup jointed carousel (9), arc wall (10) have been seted up to the inside of carousel (9), the inside sliding connection of arc wall (10) has slide bar (11), one side fixedly connected with of slide bar (11) has backup pad (12) with standing groove (6) sliding connection, one side welding that bull stick (8) were kept away from in backup pad (12) has fixed plate (13).

2. An expansion mandrel for precision machines according to claim 1, wherein: the top of the fixing plate (13) is provided with anti-skid grains (14).

3. An expansion mandrel for precision machines according to claim 1, wherein: the expansion mandrel is characterized in that a screw (16) is connected to the inner portion of the expansion mandrel (1) in a threaded mode, and a prismatic rod (15) which is connected with the rotating rod (8) in a sliding mode is welded to one side of the screw (16).

4. A precision mechanical expansion mandrel as claimed in claim 3, wherein: the other side of the screw rod (16) is fixedly connected with a rotating plate (17), and an anti-skidding sleeve (18) is sleeved on the surface of the rotating plate (17).

5. An expansion mandrel for precision machines according to claim 1, wherein: and a groove (19) matched with the clamping block (5) for use is formed in one side, close to the movable core shaft (2), of the expansion core shaft (1).

6. An expansion mandrel for precision machines according to claim 1, wherein: the expansion mandrel (1) and the movable mandrel (2) are connected in a sliding and rotating mode.