CN106944808A - A kind of assembling auxiliary mould of universal coupling with spider - Google Patents

Abstract

The invention discloses an assembly auxiliary tooling of a cross-shaft universal joint, which includes a sliding adjustable outer frame, a pressure head, a plug-in auxiliary plate, a pressing block, and an arc-shaped positioning sleeve; the sliding adjustable outer The frame is assembled with the plug-in auxiliary plate through the connecting pin, and assembled with the indenter through two symmetrical holes on the frame; the plug-in auxiliary plate is assembled with the indenter through its central opening; the indenter can be moved by sliding The symmetrical middle holes on the two frames of the adjustable outer frame are assembled with the pressing blocks; the pressing blocks are assembled with the arc-shaped positioning sleeve; the arc-shaped positioning sleeve is assembled with the cross shaft; the beneficial effect is: using a cross shaft of the above scheme The assembly auxiliary tooling of the type universal coupling can improve the assembly accuracy, reduce the wear of the needle bearing during the assembly process, reduce the labor intensity of the workers, and improve the production efficiency.

Description

Assembly auxiliary tooling for a cross-shaft universal joint

technical field

The invention relates to the field of assembly of universal joints, in particular to an auxiliary assembly tool for a cross-shaft type universal joint.

Background technique

Cross shaft universal couplings are widely used in metallurgical equipment and automobile transmission equipment for torque transmission. The cross shaft universal coupling has the advantages of high transmission efficiency, large transmission torque, stable transmission, good lubrication conditions, low noise, large allowable inclination angle and high-speed operation. However, due to the high precision requirements of the assembly process, the needle roller bearings of the cross shaft are greatly worn during the traditional assembly process, thereby shortening the service life of the coupling. According to the statistics of domestic well-known heavy-duty truck transmission shaft manufacturers, more than 30% of the transmission shaft repair problems are caused by the failure of the coupling, and the main reason for the failure of the coupling is the wear and ablation of the needle roller bearings of the cross shaft. Wait. In the assembly process of the cross shaft universal coupling, the bearing cup and the cross journal need to be separated first, and the bearing cup and the cross journal are assembled after the assembly of the cross shaft, the welding yoke and the flange yoke is completed. . This assembly process requires high precision, and traditional manual assembly is difficult to grasp. Often the initial wear of the needle bearings has been formed during the assembly process. After the coupling is applied to the transmission equipment, the needle bearings will be aggravated. Wear and tear, resulting in the failure of the entire transmission equipment. At the same time, in traditional manual assembly, the labor intensity of workers is very high, and the production efficiency is relatively low.

Contents of the invention

The technical problem to be solved by the present invention is to provide an assembly auxiliary tool for cross-shaft universal joints, which can improve assembly accuracy, reduce wear of needle bearings during assembly, reduce labor intensity of workers, and improve production efficiency.

In order to solve the above-mentioned existing technical problems, the technical solution of the present invention is as follows: an assembly auxiliary tooling of a cross-shaft universal joint, including a sliding adjustable outer frame, a pressure head, a plug-in auxiliary plate, a pressing block, Arc positioning sleeve;

The sliding adjustable outer frame is assembled with the plug-in auxiliary plate through connecting pins, and assembled with the pressure head through two symmetrical holes on the frame;

The plug-in auxiliary plate is assembled with the pressure head through its central opening;

The pressure head is assembled with the pressure block through the symmetrical middle holes on two frames of the sliding adjustable outer frame;

The pressing block is matched with the arc positioning sleeve;

The arc positioning sleeve is assembled with the cross shaft.

Preferably, the outer frame can be adjusted by sliding the connecting cylinders at its diagonal corners, so as to adapt to couplings of different specifications.

Preferably, the outer frame must be assembled into a rectangular structure suitable for couplings of different specifications.

Preferably, the diameters of the symmetrical middle holes on two frames of the outer frame should be slightly larger than the inner diameter of the largest shaft fork hole on the assembled coupling, so that the bearing cup of the cross shaft can be assembled later.

Preferably, one of the frames of the outer frame is provided with pin holes symmetrical to the center of the frame, and the pin holes are used to connect with the plug-in auxiliary board.

Preferably, a center hole is also opened on the frame with symmetrical pin holes in the outer frame, and the diameter of the center hole is slightly larger than the outer diameter of the intermediate shaft of the indenter assembled with it.

Preferably, a pair of pin holes symmetrical to the center of the plug-in auxiliary board are opened on the plug-in auxiliary board. The installed auxiliary board is connected with the sliding adjustable outer frame.

Preferably, a central hole is opened on the plug-in auxiliary plate, and the diameter of the central hole should be slightly larger than the outer diameter of the intermediate shaft of the indenter assembled with it.

Preferably, the indenter is in the shape of a stepped shaft, and the stepped shaft contains three shafts, the length of the middle shaft should be slightly greater than the sum of the length of the central hole on the plug-in auxiliary plate and the sliding adjustable outer frame, and the diameter of the middle shaft It should be slightly smaller than the diameter of the symmetrical middle holes on two of the sliding adjustable outer frames to facilitate assembly.

Preferably, the diameter of the briquetting block is slightly larger than the diameter of the tail shaft in the stepped shaft of the indenter connected to it;

The diameter of the briquetting block is slightly smaller than the diameter of the assembly hole on the arc-shaped positioning sleeve assembled with it, and the thickness of the briquetting block is greater than the depth of the notch on the arc-shaped positioning sleeve;

The arc-shaped positioning sleeve is a center-symmetrical semi-circular arc structure, and two notches are opened at both ends of the positioning sleeve to be respectively assembled with the pressure block and the cross shaft, and the two assembly forms are transition fit.

Compared with the prior art, the beneficial effect is that, by adopting the above scheme, the present invention can improve assembly precision, reduce wear of needle roller bearings during assembly, reduce labor intensity of workers, and improve production efficiency.

Description of drawings

Fig. 1 is the schematic diagram of an embodiment of the present invention;

The meaning of the code in Figure 1: 1-bearing cup; 2-cylindrical roller; 3-washer; 4-circlip; 5-skeleton oil seal; 6-connection pin; Body; 9-arc positioning guide sleeve; 10-cross shaft; 11-adjusting pad; 12-axis fork (welding fork); 13-axis fork (flange fork); 14-press block; 15-pressure head ;16-slide adjustable outer frame.

detailed description

In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are given in the description and drawings, but the present invention can be implemented in many different forms and is not limited to the embodiments described in the description. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

An example of the present invention is an assembly auxiliary tooling of a cross-shaft universal joint, which includes a sliding adjustable outer frame, a pressure head, a plug-in auxiliary plate, a pressure block, and an arc-shaped positioning sleeve; the sliding The adjustable outer frame is assembled with the plug-in auxiliary plate through connecting pins, and assembled with the pressure head through two symmetrical holes on the frame; the plug-in auxiliary plate is assembled with the pressure head through its central opening; the pressure head The symmetrical middle holes on the two frames of the adjustable outer frame are assembled with the pressure block by sliding; the pressure block is assembled with the arc-shaped positioning sleeve; and the arc-shaped positioning sleeve is assembled with the cross shaft. For example, an auxiliary assembly tooling of a cross-shaft universal joint, as shown in Figure 1, includes a sliding adjustable outer frame 16, and the sliding adjustable outer frame can pass through a plurality of The connecting column 8 is adjusted, that is to say, the sliding adjustable outer frame can adapt to couplings of different specifications. It can be seen from Fig. 1 that connecting cylinders 8 and their sliding tracks are provided at the four corners, which can be adjusted in size according to couplings of different specifications, and the outer frame is assembled into a rectangular structure compatible with the couplings. Another example is an assembly auxiliary tooling for a cross-shaft universal joint. In the sliding adjustable outer frame, the diameter of the symmetrical middle holes 17 on the two frames should be slightly larger than the largest shaft fork hole on the assembled coupling. Inner diameter, so that the bearing cup 1 of the cross shaft can be assembled later.

Preferably, one frame of the sliding adjustable outer frame is provided with pin holes symmetrical to the center of the frame and a central hole for assembling with the plug-in auxiliary plate 7 and the pressure head 15 . It can be seen from Fig. 1 that two symmetrical pin holes and a central hole are opened on the left frame of the sliding adjustable outer frame, and a pair of pin holes symmetrical to the center of the auxiliary plate are also opened on the plug-in auxiliary plate 7 (similar to that on the left frame). The symmetrical pin holes are concentric), and the plug-in auxiliary plate 7 can be tightly connected with the outer frame through the connecting pin 6. As another example, the pressure head 15 is in the shape of a stepped shaft, through which the intermediate shaft can be assembled with the plug-in auxiliary plate 7 and the central hole on the left frame.

Preferably, the arc-shaped positioning sleeve 9 is a centrally symmetrical semicircular arc structure, and two notches are respectively opened at both ends of the positioning sleeve to be assembled with the pressing block 14 and the cross shaft 10, and the two assembly forms are transition fit.

Preferably, the briquetting block is characterized in that the diameter of the briquetting block is slightly smaller than the diameter of the assembly hole on the arc-shaped positioning sleeve assembled with it, and the thickness of the briquetting block is greater than the depth of the notch on the arc-shaped positioning sleeve.

Preferably, an auxiliary tool for assembly of a cross-shaft universal joint, the specific implementation process of the auxiliary tool is: (1) first mount the middle part of the coupling on a fixed bracket; (2) Install the symmetrical two journals of the cross shaft into the two bearing holes of the fixed shaft fork 12 (generally a welding fork); (3) install the two bearing holes of the other shaft fork 13 (generally a flange fork) Insert another symmetrical journal of the cross shaft. At this time, the cross shaft is located in the middle of the two-axis fork, but the center line of the journal is not concentric with the hole of the two-axis fork (in a free state); (4) Install the adjusting washer 11; ( 5) Put the auxiliary tooling into the position to be assembled (the parts of the tooling are in place); (6) Use a suitable nylon rope to tie the roots of the two journals at the horizontal position of the cross shaft, and then lift it up through the inner hole of the outer frame (upper frame). The cross shaft is at a suitable position; (7) Adjust the three pressure heads 15, and make the cross shafts respectively located in the middle of the two shaft forks. According to the design requirements, the center lines of the cross shafts at this time should coincide with the center lines of the two shaft fork holes respectively; (8) Take out the nylon rope; (9) Put the upper bearing cup 1 and its inner cylindrical roller 2, washer 3, skeleton oil seal 5 and other accessories into the shaft fork hole and a journal of the cross shaft, and then put The circlip 4 for the hole is placed in the positioning groove of the shaft fork hole to position the bearing cup axially; (10) Rotate the coupling 90° clockwise and fix it, loosen the pressure head 15 at the 7 places of the auxiliary plate, and remove The auxiliary plate, pressure block and arc-shaped positioning sleeve; (11) assemble the second bearing cup and its accessories with the shaft fork hole and cross journal according to (9); (12) loosen the other two Press the head and take out the auxiliary tooling; (13) Assemble the third and fourth bearing cups and their accessories with the shaft fork hole and the cross shaft journal according to (9) (at this time, the shaft fork needs to be aligned in the vertical direction advances).

Furthermore, the embodiments of the present invention also include the various technical features of the above-mentioned embodiments, which are combined with each other to form an auxiliary tool for assembly of the cross-shaft universal joint.

It should be noted that the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the present invention; and, for those of ordinary skill in the art, improvements can be made according to the above description Or transformation, and all these improvements and transformations should belong to the protection scope of the appended claims of the present invention.

Claims (10)

1. the assembling auxiliary mould of a kind of universal coupling with spider, it is characterised in that including sliding adjustable outer framework, pressure Head, the auxiliary plate of plug-in, briquetting, arc positioning sleeve；

The sliding adjustable outer framework is assembled by connecting pin and the auxiliary plate of plug-in, and by two symmetrical holes on its framework with Pressure head is assembled；

The auxiliary plate of plug-in is assembled by its center drilling and pressure head；

The pressure head is assembled by the symmetrical mesopore on sliding adjustable outer framework wherein two framves and briquetting；

The briquetting is assembled with arc positioning sleeve；

The arc positioning sleeve is assembled with cross axle.

2. the assembling auxiliary mould of universal coupling with spider according to claim 1, it is characterised in that the outer framework It can be adjusted by sliding the connection cylinder of its diagonal angle, to adapt to the shaft coupling of different size.

3. the assembling auxiliary mould of universal coupling with spider according to claim 2, it is characterised in that the outer framework The rectangular configuration adaptable with it must be dressed up to the shaft coupling of different size.

4. the assembling auxiliary mould of universal coupling with spider according to claim 3, it is characterised in that the outer framework Symmetrical median pore diameter on wherein two framves should be slightly bigger than the maximum yoke hole internal diameter on assembled shaft coupling, so that the later stage carries out ten The bearing cup assembling of word axle.

5. the assembling auxiliary mould of universal coupling with spider according to claim 4, it is characterised in that the outer framework The pin-and-hole symmetrical on frame center is provided with a wherein frame, the pin-and-hole is used for being connected with the auxiliary plate of plug-in.

6. the assembling auxiliary mould of universal coupling with spider according to claim 5, it is characterised in that the outer framework Wherein it is provided with a frame of symmetrical pin-and-hole while being also provided with a centre bore, the center-hole diameter is slightly larger than in the pressure head assembled with it Countershaft external diameter.

7. the assembling auxiliary mould of universal coupling with spider according to claim 5, it is characterised in that the plug-in A pair are provided with auxiliary plate on the centrosymmetric pin-and-hole of auxiliary plate, the pin-and-hole and a pair of pin-and-hole center superpositions on outer framework, and The auxiliary plate of plug-in and sliding adjustable outer framework are connected using connecting pin by the pin-and-hole.

8. the assembling auxiliary mould of universal coupling with spider according to claim 7, it is characterised in that the plug-in A centre bore is provided with auxiliary plate, the center-hole diameter should be slightly bigger than the pressure head jackshaft external diameter assembled with it.

9. the assembling auxiliary mould of universal coupling with spider according to claim 8, it is characterised in that the pressure head is Ladder shape shaft, the multi-diameter shaft contains three sections of axles, and its jackshaft length should be slightly bigger than outside the auxiliary plate of plug-in and sliding adjustable Hole length sum in center on framework, and middle shaft diameter should be slightly less than the symmetrical mesopore on sliding adjustable outer framework wherein two framves Diameter, in order to assemble.

10. the assembling auxiliary mould of universal coupling with spider according to claim 1, it is characterised in that the briquetting Diameter is slightly larger than the diameter of connected pressure head multi-diameter shaft intermediate tail shaft；

The briquetting diameter is slightly less than the diameter of pilot hole on the arc positioning sleeve assembled with it, and briquetting thickness is greater than arc The depth of notch on positioning sleeve；

Symmetrical semi arch structure centered on the arc positioning sleeve, the positioning sleeve two ends are respectively provided with two notches respectively at briquetting Assembled with cross axle, assembling form is interference fits at described two.