CN105171670A - Multifunctional tool shaft for oil cylinder pin shaft assembling expansion and using method of multifunctional tool shaft - Google Patents

Abstract

The invention discloses a tooling shaft for multifunctional assembly and expansion of an oil cylinder pin shaft, which can shorten the maintenance and assembly time, reduce manpower consumption, and improve the pin shaft assembly efficiency, and its use method; the adopted technical scheme is: three tooling shaft bodies cooperate to form one Cylindrical movable cylinder, the center of the movable cylinder is an axial through hole, both ends of the movable cylinder are conical structures with small heads facing inward, and the two extruded end caps are cone-shaped, matched with the movable cylinder The two ends of the cylinder and the center of the extruded end cover are also provided with a through hole, which is coaxially arranged with the axial through hole of the movable cylinder, and the tension bolt runs through the movable cylinder and the extrusion end cover, and one end of the tension bolt is The bolt head is stuck on the end of the extrusion end cover, and the other end of the tightening bolt is provided with a nut; and the pin shaft is coaxially loaded into the erecting cylinder hole and the mounting hole of the supporting bracket by using the tooling shaft; the present invention The utility model can be widely used in the field of oil cylinder pin shaft assembly.

Description

A tooling shaft for multifunctional assembly and expansion of oil cylinder pin shaft and its use method

technical field

The invention discloses a tooling shaft for multifunctional assembly and expansion of an oil cylinder pin shaft and a method for using the same, belonging to the technical field of oil cylinder pin shaft assembly, and in particular to a method for maintaining straightness of an oil cylinder pin shaft.

Background technique

The joint bearing is a key component of the product, but during the assembly of the pin shaft, because the position of the joint bearing, the mounting hole and the mounting hole of the bracket are not easy to fix during the assembly process, it is easy to rotate and it is difficult to maintain straightness, which affects the assembly efficiency of the pin shaft. After research and analysis, the factors that affect the assembly efficiency of the pin shaft mainly include:

1. During the hoisting and assembling process, the position of the erecting oil cylinder is not easy to fix, and the coaxiality required for assembly cannot be maintained with the mounting hole of the support bracket.

2. The joint bearing and the mounting hole of the support bracket are not well visualized during assembly and installation.

These factors have affected the overall assembly of the pin shaft, and the assembly process is time-consuming and laborious, and the quality cannot be guaranteed, which has become a "bottleneck" affecting the entire product manufacturing process. Therefore, how to assemble the pin shaft in a convenient and fast way has become an urgent problem to be solved. technical issues.

Contents of the invention

The invention overcomes the deficiencies in the prior art, and provides a tooling shaft for multifunctional assembly and expansion of the oil cylinder pin shaft and its use method, which can shorten the maintenance and assembly time, reduce manpower consumption, and improve the pin shaft assembly efficiency.

In order to solve the above technical problems, the technical solution adopted in the present invention is: a tooling shaft for multifunctional assembly and expansion of the oil cylinder pin shaft, including a tooling shaft body, an extruded end cover and a tension bolt, and the three tooling shaft bodies cooperate to form A cylindrical movable cylinder, the center of the movable cylinder is an axial through hole, both ends of the movable cylinder are conical structures with small heads facing inward, and the two extruded end caps are Conical body, matched at both ends of the movable cylinder, the center of the extruded end cap is also provided with a through hole, the through hole is coaxially arranged with the axial through hole of the movable cylinder, and the tension bolt runs through The movable cylinder and the extruded end cap, one end of the tension bolt is stuck on the end of the extruded end cap through the bolt head, the other end of the tension bolt is provided with a nut, and the two ends are pulled closer by tightening the nut. Extrude the distance between the end caps so that the extruded end caps will expand the movable cylinder.

The outer surface of the movable cylinder is provided with a plurality of grooves in the radial direction, and an elastic ring is set in the groove, and the elastic ring makes the tooling shaft body have a tension force in the radial direction, ensuring that the three tooling shafts The coaxiality of the body.

The outer side of the movable cylinder is fitted with a collar, and the collar is used to constrain the movable cylinder.

The present invention also relates to a method for using the above-mentioned tool shaft, which is characterized in that it is carried out according to the following steps:

The first step: first process the various parts of the tooling shaft according to the different sizes and specifications on the drawings to produce parts of different specifications;

Step 2: Determine the specifications of each part of the tooling shaft according to the size of the erecting cylinder hole;

The third step: Assemble the tooling shaft body selected in the second step into a movable cylinder, and set the collar to shape;

Step 4: Use tension bolts and nuts to connect the movable cylinder with the extruded end cap in the third step to form a tooling shaft;

Step 5: Pass the tooling shaft assembled in step 4 through the hole of the erecting cylinder and the mounting hole of the support bracket in turn;

Step 6: Tighten the nut to shorten the distance between the two extruded end caps, thereby expanding the outer diameter of the movable cylinder;

Step 7: Continue to tighten the nuts, and the three tooling shaft bodies will continue to expand outward from three directions until the movable cylinder expands to the maximum expansion state. At this time, the erecting cylinder hole and the mounting hole of the support bracket are in a coaxial state ;

Step 8: Put the pin shaft along the expansion hole of the tooling shaft, and impact the pin shaft with a copper rod in the axial direction. At this time, the tooling shaft is subjected to axial force and moves to the other side along the axial direction. Move, pin shaft also enters the pin shaft installation hole according to tooling shaft motion direction, finally makes pin shaft fully pack in the installation hole of erecting oil cylinder hole and support bracket, and meets assembly requirements.

Compared with the prior art, the present invention has the beneficial effects that: the present invention designs an assembly method based on the tooling shaft according to the assembly characteristics of the erecting cylinder hole and the mounting hole of the support bracket, which changes the degree of visualization during the existing installation. The assembly status is not high, the position is not easy to fix, and the installation position of the support bracket cannot be kept at the same axial degree required for assembly. On the basis of creating auxiliary matching features for parts, the pin shaft has assembly features, which can effectively solve the technical problems in assembly. Difficulties, so that the assembly effect is convenient and quick. In the past, after aligning the erecting cylinder hole and the installation hole of the support bracket before use, since the oil cylinder can rotate around the rotation axis of the installation hole of the lower support bracket, it is difficult to align the oil cylinder and the upper support bracket. In the process of threading the pin shaft, it is also possible that the aligned holes are not on the same axis, and it takes four hours to complete the assembly. The present invention greatly improves the assembly efficiency through the design of the tooling shaft. By using the tooling shaft, It only takes three minutes, which saves the assembly time. For the current product task, which has the characteristics of urgent batch and large output, it greatly improves the overall assembly efficiency and lays a strong guarantee for the smooth delivery of military products.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural view of the tool shaft of the present invention.

Fig. 2 is a schematic diagram of assembly of the tool shaft in the present invention.

Fig. 3 is a diagram of the use state of the present invention.

In the figure: 1 is the body of the tooling shaft, 2 is the extrusion end cover, 3 is the tension bolt, 4 is the nut, 5 is the groove, 6 is the elastic ring, 7 is the collar, 8 is the movable cylinder, 9 is the Bearing pin, 10 are the oil cylinder holes for erecting, and 11 are the mounting holes for supporting the bracket.

Detailed ways

According to the analysis of the visualization degree of the installation environment, the installation position and the installation operation steps in the present invention, the key that affects the assembly of the cylinder pin shaft between the erecting cylinder shaft and the supporting bracket lies in the "straightness" of the erecting cylinder installation hole and the bracket installation hole. "superior. Based on this design concept, the assembly tool shaft was designed through research and calculation to ensure that the mounting hole of the erecting cylinder and the mounting hole of the bracket are always on the same axis, so that the assembly method of the original hole and shaft is innovated, and the assembly time is effectively shortened. The adjustment time improves the assembly quality and assembly efficiency.

As shown in Figure 1, Figure 2 and Figure 3, a tooling shaft for multifunctional assembly and expansion of an oil cylinder pin according to the present invention includes a tooling shaft body 1, an extruded end cover 2 and a tension bolt 3, and the three tooling shafts The main body 1 cooperates to form a cylindrical movable cylinder 8. The center of the movable cylinder 8 is an axial through hole. Both ends of the movable cylinder 8 are conical structures with small heads facing inward. The extruding end cap 2 is a conical body, which is matched with the two ends of the movable cylinder 8. The center of the extruding end cap 2 is also provided with a through hole, and the through hole communicates with the axial direction of the movable cylinder 8. The holes are set coaxially, the tension bolt 3 runs through the movable cylinder 8 and the extrusion end cover 2, one end of the tension bolt 3 is stuck on the end of the extrusion end cover 2 through the bolt head, and the tension bolt 3 The other end is provided with a nut 4, and by tightening the nut 4, the distance between the two extruding end caps 2 is shortened, so that the extruding end caps 2 expand the movable cylinder 8.

The outer surface of the movable cylinder 8 is provided with a plurality of grooves 5 in the radial direction, and the elastic rings 6 are set in the grooves 5, and the elastic rings 6 make the tooling shaft body 1 have a tension force in the radial direction. , to ensure the coaxiality of the three tooling shaft bodies 1 .

A collar 7 is sleeved on the outside of the movable cylinder 8 , and the collar 7 is used to constrain the movable cylinder 8 .

The present invention also relates to a method for using the above-mentioned tool shaft, which is characterized in that it is carried out according to the following steps:

The first step: first process the various parts of the tooling shaft according to the different sizes and specifications on the drawings to produce parts of different specifications;

Step 2: Determine the specifications of each component of the tooling shaft according to the size of the erecting cylinder hole 10;

The third step: assemble the tooling shaft body 1 selected in the second step into a movable cylinder 8, and set the collar 7 to shape;

The fourth step: use the tension bolt 3 and the nut 4 to connect the movable cylinder 8 and the extruded end cover 2 in the third step to form a tooling shaft;

The fifth step: pass the tooling shaft assembled in the fourth step through the erecting cylinder hole 10 and the mounting hole 11 of the supporting bracket in sequence;

Step 6: Tighten the nut 4 to shorten the distance between the two extruded end caps 2, thereby expanding the outer diameter of the movable cylinder 8;

Step 7: Continue to tighten the nuts 4, and the three tool shaft bodies 1 continue to expand outward in three directions until the movable cylinder 8 expands to the maximum expansion state, and at this time, the vertical cylinder hole 10 and the mounting hole of the support bracket are erected 11 is in the coaxial state;

Step 8: Put the pin shaft 9 along the expansion hole of the tooling shaft, and impact the pin shaft 9 with a copper rod in the axial direction. At this time, the tooling shaft is subjected to axial force and moves axially to the other side. As the shaft moves, the pin shaft 9 also enters the pin shaft mounting hole according to the moving direction of the tooling shaft, and finally the pin shaft 9 is completely packed into the vertical oil cylinder hole 10 and the mounting hole 11 of the support bracket, and meets the assembly requirements.

In the present invention, elastic rings 6 are installed in the three grooves 5 so that the tooling shaft body 1 has a tension force in the radial direction, so as to ensure that the three tooling shaft bodies 1 maintain coaxiality when they are tightened by the tensioning bolts 3 . And make the outward expansion force of the tool shaft body 1 evenly act on the hole wall.

In addition, in order to make the entire tooling shaft achieve assembly applicability during the assembly process, it is first necessary to check whether the assembly link is intact and whether the elastic ring 6 is within its elastic expansion and contraction range.

The present invention designs the tooling shaft based on the problems encountered in actual working conditions. The tooling shaft uses Q345B as the base material, and the outer diameter and length of the tooling shaft are determined according to the size of the erecting cylinder hole, and three grooves are opened on the outer surface of the tooling shaft. , the three grooves 5 are equipped with elastic rings 6 so that the tooling shaft has a tension force in the radial direction, ensuring that the three parts have a certain roundness when the bolts are tightened, so that the outward expansion force of the tension bolts 3 acts evenly On the hole wall, thereby ensuring that the erecting cylinder hole 10 and the mounting hole 11 of the support bracket have a certain coaxiality, the assembly efficiency of the hole shaft is improved.

In the present invention, the machined parts of the tooling shaft, the shaft hole is cut into three parts, when the screw is tightened, the tooling shaft body 1 is subjected to the tension force of the tension bolt 3, and the tooling shaft body 1 expands outward from three directions , until the tension bolt 3 is tensioned until the movable cylinder 8 reaches the maximum expansion state.

Working principle of the present invention: the tooling shaft is placed in the erecting cylinder hole 10 and the mounting hole 11 of the support bracket, when the tension bolt 3 is tightened with a wrench, under the tension force of the tension bolt 3, the tooling shaft will Expansion outwards, and the expansion force makes the hole of the erecting oil cylinder, the lug hole of the bracket and the retaining rings on both sides have a certain straightness. At this time, put the pin shaft 9 along the expansion hole of the tool shaft, and impact the pin shaft 9 with a copper rod in the axial direction. Axle 9 also enters the bearing pin installation hole according to tool shaft motion direction, finally makes bearing bearing 9 fully pack into in the installation hole 11 of erecting oil cylinder hole 10 and support bracket, has reached assembly requirement.

In the present invention, the pin shaft of the oil cylinder is assembled by using the tooling shaft, and the pin shaft of the oil cylinder can be smoothly penetrated in only three minutes, thereby greatly improving the assembly efficiency.

Aiming at the tooling shaft assembly method, study the assembly characteristics of the joint bearing shaft, especially the joint bearing can rotate in the lug, the positioning rings are assembled on both sides of the joint bearing, the bracket lugs, and the five assembly points must be in a straight line. Assembly environment restrictions (difficult to observe, narrow space and other assembly environments) are the main factors affecting the assembly of the pin shaft. This tooling can ensure the coaxiality required by the assembly at five points through expansion. After the outer diameter of the tooling is mechanically expanded, the outer diameter of the tooling diameter expansion, this range can solve the assembly problem of the shaft diameter in this range, the application range is large, and the assembly problem is conveniently solved, laying the foundation for the next step of applying the tooling shaft assembly method to other fields, and expanding its application to improve assembly efficiency , which has laid a strong foundation, tooling with different shaft diameters is suitable for assembly with different shaft diameters, which is also a direction for future research.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Within the scope of knowledge of those of ordinary skill in the art, various modifications can be made without departing from the gist of the present invention. kind of change.

Claims (4)

1. an oil cylinder bearing pin multi-functional assembling expansion tooling shaft, it is characterized in that, comprise tooling shaft body (1), extruding end cap (2) and turnbuckle (3), three described tooling shaft bodies (1) coordinate the columniform movable cylinder (8) of formation one, the center of described movable cylinder (8) is an axially extending bore, the two ends of described movable cylinder (8) are the inside conical structure of microcephaly, two described extruding end caps (2) are bullet, coupling is arranged on the two ends of movable cylinder (8), the center of described extruding end cap (2) is also provided with through hole, the axially extending bore of described through hole and movable cylinder (8) is coaxially arranged, described turnbuckle (3) runs through movable cylinder (8) and extruding end cap (2), described turnbuckle (3) one end is stuck in extruding end cap (2) end by bolt head, the other end of described turnbuckle (3) is provided with nut (4), to further two the distance extruded between end cap (2) by tightening described nut (4), make extruding end cap (2) by large for movable cylinder (8) support.

2. a kind of oil cylinder bearing pin according to claim 1 multi-functional assembling expansion tooling shaft, it is characterized in that, the lateral surface of described movable cylinder (8) has been disposed radially multiple groove (5), elastic ring (6) is set with in described groove (5), described elastic ring (6) makes tooling shaft body (1) radially have tightening force, guarantees the alignment of three tooling shaft bodies (1).

3. a kind of oil cylinder bearing pin according to claim 1 and 2 multi-functional assembling expansion tooling shaft, is characterized in that, the outside of described movable cylinder (8) is set with the collar (7), and the described collar (7) is for retraining movable cylinder (8).

4. utilize a using method for tooling shaft as claimed in claim 3, it is characterized in that, carry out according to following steps:

The first step: the part first each for tooling shaft parts being processed different size according to dimensions different on drawing is for subsequent use;

Second step: according to the specification of each parts of size determination tooling shaft of Erecting oil cylinder hole (10);

3rd step: the tooling shaft body (1) selected in second step is assembled into movable cylinder (8), and be set with the collar (7) sizing;

4th step: with nut (4), movable cylinder (8) in the 3rd step is connected together formation tooling shaft with extruding end cap (2) with turnbuckle (3);

5th step: the installing hole (11) tooling shaft assembled in the 4th step being passed successively Erecting oil cylinder hole (10) and support bracket;

6th step: tightening nuts (4), further two the distance extruded between end cap (2), thus by large for the support of the external diameter of movable cylinder (8);

7th step: continue tightening nuts (4), three tooling shaft bodies (1) are continued outwards to expand by three directions, until movable cylinder (8) expand into maximum swelling state, now the installing hole (11) of Erecting oil cylinder hole (10) and support bracket is in coaxial state;

8th step: bearing pin (9) is put into along the inflation port of tooling shaft, bearing pin (9) is impacted vertically with copper rod, now tooling shaft is subject to axial force, move to opposite side vertically, along with the movement of tooling shaft, bearing pin (9) also enters bearing pin installing hole according to the tooling shaft direction of motion, finally makes bearing pin (9) put in the installing hole (11) of Erecting oil cylinder hole (10) and support bracket completely, and reaches matching requirements.