CN221159454U

CN221159454U - Crankshaft fixing device

Info

Publication number: CN221159454U
Application number: CN202323224889.5U
Authority: CN
Inventors: 齐建保; 齐鑫杭
Original assignee: Qingdao Baohang Machinery Co ltd
Current assignee: Qingdao Baohang Machinery Co ltd
Priority date: 2023-11-28
Filing date: 2023-11-28
Publication date: 2024-06-18
Anticipated expiration: 2033-11-28

Abstract

The utility model discloses a crankshaft fixing device, which relates to the technical field of crankshaft fixing devices, wherein the fixing device is provided with a die carrier, first guide rails are arranged on the die carrier in parallel, sliding plates are arranged on the first guide rails in a sliding manner, one end of the die carrier is provided with a mounting seat, a first driving cylinder is arranged on the mounting seat, and the output end of the first driving cylinder is connected with the sliding plates; the sliding plate is provided with a sliding seat along the length direction, the sliding seat is provided with two clamping units which have the same structure and are symmetrically arranged in a sliding manner, the clamping units comprise sliding blocks, vertical plates are arranged on the sliding blocks in parallel, one sides of the vertical plates, which are close to each other, are provided with mounting openings, clamping blocks are arranged in the mounting openings, and clamping openings are formed in the clamping blocks; the crankshaft clamping device comprises a sliding plate, a first clamping unit, a second clamping unit, a first driving cylinder, a second driving cylinder, a first clamping unit, a second clamping unit, a first clamping unit, a second clamping unit, a first clamping unit and a second clamping unit.

Description

Crankshaft fixing device

Technical Field

The utility model relates to the technical field of crankshaft fixing devices, in particular to a crankshaft fixing device.

Background

The crankshaft is the main rotating part of the engine, and after the connecting rod is installed, the crankshaft can receive the up-and-down (reciprocating) motion of the connecting rod to be changed into the circulating (rotating) motion. The engine is an important part on the engine, and the material is made of carbon structural steel or ductile cast iron, and has two important parts, namely a main journal and a connecting rod journal (among others). The main journal is mounted on the cylinder, the connecting rod journal is connected with the connecting rod big end hole, and the connecting rod small end hole is connected with the cylinder piston, so that the crank slide block mechanism is typical. The crankshaft is mainly lubricated with a big end bearing bush of a connecting rod, a connecting rod neck of the crankshaft and two fixed points. And is also the source power for the entire mechanical system.

When the workshop carries out finish machining to the bent axle, need fix the bent axle on the lathe and utilize milling cutter and centre to bore the both ends of bent axle and mill the plane and beat the centre bore, current general is fixed bent axle one end on the lathe of unipolar, mill the processing to the other end earlier, then carry out the other end again, such machining mode inefficiency, consequently, in order to improve the machining efficiency to bent axle both ends, adopt multiaxis lathe to process the both ends of bent axle simultaneously, just need fix the bent axle on the frock in advance before processing, prevent to appear rocking and lead to the reduction of machining precision and appear the bad problem of processing in the course of working.

Therefore, there is a need for a crankshaft fixing device for well fixing a crankshaft, and improving machining efficiency and precision.

Disclosure of utility model

The utility model provides a crankshaft fixing device for solving the problem of fixing when two ends of a crankshaft are simultaneously processed by utilizing a multi-shaft lathe.

The technical aim of the utility model is realized by the following technical scheme:

The utility model provides a bent axle fixing device, includes lathe and setting up the fixing device in the lathe, its characterized in that: the fixing device is provided with a die carrier, first guide rails are arranged on the die carrier in parallel, a sliding plate is arranged on the first guide rails in a sliding mode, one end of the die carrier is provided with a mounting seat, a first driving cylinder is arranged on the mounting seat, and the output end of the first driving cylinder is connected with the sliding plate;

The sliding plate is provided with a sliding seat along the length direction, the sliding seat is provided with two clamping units which are identical in structure and symmetrically arranged in a sliding manner, the clamping units comprise sliding blocks, vertical plates are arranged on the sliding blocks in parallel, one sides of the vertical plates, which are mutually symmetrical, are provided with mounting openings, clamping blocks are arranged in the mounting openings, and clamping openings are formed in the clamping blocks;

The two sides of the sliding plate are provided with mounting plates, the mounting plates are provided with second driving cylinders, the output ends of the second driving cylinders are respectively connected to two clamping units, and the two clamping units can move in the same frequency direction under the drive of the second driving cylinders;

The slide is located between the two clamping units and perpendicular to the first guide rail and is provided with a slide rail, and the slide rail is provided with a first bracket and a second bracket.

Further, one side of the sliding block, which is close to the vertical plate, is provided with a second guide rail, the vertical plate can move along the second guide rail in a direction perpendicular to the first guide rail, one end of the vertical plate, which is close to the second guide rail, is provided with a first sliding seat, and a brake bolt is arranged on the first sliding seat.

Further, one ends of the first bracket and the second bracket, which are close to the sliding rail, are respectively provided with a second sliding seat, the second sliding seats are internally connected with screws in a threaded manner, and one ends of the screws, which are far away from the second sliding seats, are provided with V-shaped lugs.

Further, the vertical plate is detachably connected with the clamping block, and the clamping opening is of a V-shaped structure.

Further, the first bracket and the second bracket can realize braking on the sliding rail.

Further, the die carrier is provided with a travel groove along the driving direction of the first driving cylinder.

In summary, the beneficial technical effects of the utility model are as follows:

(1) The crankshaft is supported before being clamped by the first bracket and the second bracket, the second driving cylinder simultaneously drives the two sliding blocks and the vertical plate to move in opposite directions through the clamping block so as to clamp the crankshaft, and then the first driving cylinder drives the whole sliding plate to respectively move the crankshaft to the milling cutter and the center drill position of the multi-axis lathe for processing, so that the problem that the machining is poor and the precision is reduced due to shaking of the crankshaft in the machining process is solved when the two ends of the crankshaft are fixed by the multi-axis lathe.

(2) The second guide rail can be used for adjusting the distance between the two vertical plates on the same side, so that the crankshaft fixing device is applicable to crankshaft fixing of different sizes.

(3) The second sliding seat and the screw rod can be used for adjusting the heights of the first bracket and the second bracket, so that different parts of the crankshaft are supported.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the structure of FIG. 1 at another angle;

FIG. 3 is a schematic structural view of the fixture;

FIG. 4 is a schematic view of the structure of FIG. 3 at another angle;

FIG. 5 is a third angular structure schematic of FIG. 4;

FIG. 6 is a schematic view of the structure of the hidden riser of FIG. 4;

Fig. 7 is a schematic structural view of the first carriage;

Fig. 8 is a schematic representation of the use of the present utility model.

Reference numerals: 1. a lathe; 2. a mould frame; 3. a first guide rail; 4, a step of; a slide plate; 5. a mounting base; 6. a first drive cylinder; 7. a slide; 8. a slide block; 9. a vertical plate; 10. a clamping block; 11. a clamping opening; 12. a mounting plate; 13. a second driving cylinder; 14. a slide rail; 15. a second guide rail; 16. a first sliding seat; 17. a brake bolt; 18. a first bracket; 19. a second bracket; 20. a second sliding seat; 21. a screw; 22. a V-shaped support; 23. a travel groove; 24. a milling cutter; 25. a center drill; 26. a crankshaft; 27. processing an end face; 28. a first support portion; 29. a second supporting part; 30. and a clamping part.

Detailed Description

The present utility model will be described more fully hereinafter with reference to the accompanying examples.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the description of the embodiments, the terms "disposed," "connected," and the like are to be construed broadly unless otherwise specifically indicated and defined. For example, the connection can be fixed connection, detachable connection or integral connection; can be mechanically or electrically connected; can be directly connected, can be connected through an intermediary medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-7, a crankshaft fixing device is shown, which comprises a lathe 1, the lathe 1 adopts a multi-shaft lathe 1 to simultaneously install multiple cutters, two ends of a workpiece are simultaneously machined, a milling cutter 24 and a center drill 25 are installed in the utility model, a die frame 2 is fixedly arranged in the lathe 1, one end of the bottom of the die frame 2 is provided with a mounting seat 5, a first driving cylinder 6 is arranged on the mounting seat 5, the first driving cylinder 6 can be an air cylinder, an oil cylinder or an electric cylinder, the die frame 2 is provided with a travel groove 23 along the extending and contracting direction of the output end of the first driving cylinder 6, the die frame 2 is provided with two first guide rails 3 in parallel along the length direction, a sliding plate 4 is slidably arranged on the first guide rails 3, the bottom side of the sliding plate 4 is connected with the output end of the first driving cylinder 6, and the sliding plate 4 is driven by the first driving cylinder 6 to reciprocate along the first guide rails 3, therefore, the crankshaft 26 can be moved to the positions of the machining cutters through the first driving cylinder 6 and the sliding plate 4 when the two ends of the crankshaft 26 are machined, further the switching of the crankshaft 26 at different positions is completed, the sliding seat 4 is provided with a sliding seat 7 along the length direction, the sliding plate 4 is provided with two identical structure units, and the clamping unit is symmetrically arranged, and the clamping unit is specifically clamped. The clamping units comprise sliding blocks 8, second guide rails 15 are arranged on the sliding blocks 8 in parallel perpendicular to the first guide rails 3, two vertical plates 9 are arranged on the second guide rails 15 in parallel, one ends of the vertical plates 9 which are symmetrical to each other in the two clamping units are respectively provided with a mounting opening, clamping blocks 10 are arranged in the mounting openings through bolts, V-shaped clamping openings 11 are arranged on the clamping blocks 10, the clamping openings 11 are used for clamping crankshafts 26 in the clamping blocks, mounting plates 12 are arranged on two sides of each sliding plate 4, a second driving cylinder 13 is arranged on each mounting plate 12, the second driving cylinders 13 are specifically a double-head cylinder, telescopic rods at two ends can act simultaneously, the two telescopic rods of the second driving cylinders 13 are respectively connected with the two sliding blocks 8, and further the two sliding blocks 8 are driven to move in the same frequency and in opposite directions through the action of the second driving cylinders 13, so that crankshafts 26 positioned in the two clamping openings 11 are effectively clamped and fixed, shaking during machining is avoided, and defective products are avoided;

Further, a first sliding seat 16 is arranged at one end of the vertical plate 9 close to the second guide rail 15, the vertical plate 9 can slide on the second guide rail 15 through the first sliding seat 16, and further, the adjustment of the distance between the two vertical plates 9 on the same sliding block 8 is realized, so that the clamping of crankshafts 26 with different sizes is applicable, meanwhile, a brake bolt 17 is arranged on the first sliding seat 16, and the position of the whole vertical plate 9 on the second guide rail 15 is fixed through the brake bolt 17;

further, the middle part of the sliding seat 7 is provided with a sliding rail 14 perpendicular to the first guide rail 3 between two symmetrical vertical plates 9, the sliding rail 14 is sequentially provided with a first bracket 18 and a second bracket 19 in a sliding manner, the first bracket 18 and the second bracket 19 are used for firstly placing the crankshaft 26 on the first bracket 18 and the second bracket 19 when clamping the crankshaft 26, then the vertical plates 9 are driven to clamp by using the second driving cylinder 13, thus, workers are prevented from holding the crankshaft 26 by hand to clamp, the labor intensity is reduced, the first bracket 18 and the second bracket 19 are structurally the same and are provided with a second sliding seat 20, the second sliding seat 20 is matched with the sliding rail 14 to change the distance between the first bracket 18 and the second bracket 19, a screw 21 is connected to the second sliding seat 20 in a threaded manner, the screw 21 can stretch out and draw back in the second sliding seat 20, a V-shaped supporting seat 22 is fixedly arranged at the other end of the screw 21, and the supporting of the crankshaft 26 at different height positions is realized by using the V-shaped supporting seat 22 through the stretch out and draw back of the screw 21 in the second sliding seat 20.

When the device is used, referring to fig. 8, the whole sliding plate 4 is firstly moved out along the first guide rail 3 through the first driving cylinder 6, so that the distance for placing the crankshaft 26 on the first bracket 18 and the second bracket 19 by a worker can be shortened, more labor saving and convenience are achieved, the second driving cylinder 13 is used for driving the two sliding blocks 8 to be separated from each other along the sliding seat 7, the crankshaft 26 is placed on the first bracket 18 and the second bracket 19, the first supporting part 28 of the crankshaft 26 is lapped in the V-shaped supporting plate 22 of the first bracket 18 during placement, the second supporting part 29 of the crankshaft 26 is lapped in the V-shaped supporting plate 22 of the second bracket 19, the second driving cylinder 13 is used for driving the sliding blocks 8 to be close to each other along the sliding seat 7, the clamping blocks 10 on the vertical plate 9 are used for clamping the clamping parts 30 of the crankshaft 26 through the clamping ports 11, the whole crankshaft 26 is clamped and fixed by the lathe, and then the first driving cylinder 6 is used for driving the sliding plate 4 for clamping the crankshaft 26 to move to the position of the milling cutter 24 or the center 25 for holding the crankshaft 26 to process the end faces 27.

The above description is only a preferred embodiment of the present utility model, and is not intended to limit the scope of the present utility model. All equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a bent axle fixing device, includes lathe (1) and sets up the fixing device in lathe (1), its characterized in that: the fixing device is provided with a die carrier (2), a first guide rail (3) is arranged on the die carrier (2) in parallel, a sliding plate (4) is arranged on the first guide rail (3) in a sliding mode, an installation seat (5) is arranged at one end of the die carrier (2), a first driving cylinder (6) is arranged on the installation seat (5), and the output end of the first driving cylinder (6) is connected with the sliding plate (4);

The sliding plate (4) is provided with a sliding seat (7) along the length direction, the sliding seat (7) is provided with two clamping units which have the same structure and are symmetrically arranged in a sliding manner, the clamping units comprise sliding blocks (8), vertical plates (9) are arranged on the sliding blocks (8) in parallel, one sides of the vertical plates (9) which are mutually symmetrical are provided with mounting openings, clamping blocks (10) are arranged in the mounting openings, and clamping openings (11) are formed in the clamping blocks (10);

Mounting plates (12) are arranged on two sides of the sliding plate (4), a second driving cylinder (13) is arranged on the mounting plates (12), output ends of the second driving cylinder (13) are respectively connected to two clamping units, and the two clamping units can move in the same frequency and in opposite directions under the drive of the second driving cylinder (13);

The sliding seat (7) is positioned between the two clamping units and is perpendicular to the first guide rail (3) and provided with a sliding rail (14), and the sliding rail (14) is provided with a first bracket (18) and a second bracket (19).

2. A crankshaft fixing apparatus according to claim 1, wherein: one side that slider (8) are close to riser (9) is equipped with second guide rail (15), riser (9) can be along second guide rail (15) do the motion of perpendicular to first guide rail (3), the one end that riser (9) are close to second guide rail (15) is equipped with first sliding seat (16), be equipped with brake bolt (17) on first sliding seat (16).

3. A crankshaft fixing apparatus according to claim 2, wherein: the one end that is close to slide rail (14) of first bracket (18) and second bracket (19) is equipped with second sliding seat (20) respectively, second sliding seat (20) internal thread connection has screw rod (21), the one end that second sliding seat (20) were kept away from to screw rod (21) is equipped with V type support (22).

4. A crankshaft fixing apparatus according to claim 3, wherein: the vertical plate (9) is detachably connected with the clamping block (10), and the clamping opening (11) is of a V-shaped structure.

5. A crankshaft (26) securing device according to claim 4, characterized in that: the first bracket (18) and the second bracket (19) can be braked on the sliding rail (14).

6. A crankshaft fixing apparatus according to claim 5, wherein: the die carrier (2) is provided with a travel groove (23) along the driving direction of the first driving cylinder (6).