CN201848793U

CN201848793U - Clamp for assembling connecting rod bush

Info

Publication number: CN201848793U
Application number: CN2010205603178U
Authority: CN
Inventors: 冀会平; 周洋; 王洪
Original assignee: YUNNAN XIYI INDUSTRY CO LTD
Current assignee: YUNNAN XIYI INDUSTRY CO LTD
Priority date: 2010-10-14
Filing date: 2010-10-14
Publication date: 2011-06-01
Anticipated expiration: 2020-10-14

Abstract

The utility model discloses a clamp for assembling a connecting rod bush, which is mainly used for assembling a bush for an engine connecting rod with a wedged structure at the small end. The main technical scheme is as follows: a bracket is fixed at the right side of a base; an adjusting screw is arranged on the bracket; a slot is arranged above the right part of the base; the slot is internally provided with a wedged positioning block; a core shaft is coaxially arranged in a hole at the right part of the base; a connecting rod large-hole positioning core shaft is arranged at the left part of the base; simultaneously, two positioning blocks are arranged at the front part and the rear part of the positioning core shaft respectively. Proved by the practical application, the defects of sliding and deformation generated in the assembling process of the original bush, and low qualified rate of products can be overcome radically, therefore, the assembling quality and efficiency of the connecting rod bush can be improved effectively, and the requirements on batch production of the connecting rod can be met.

Description

A kind of anchor clamps that assemble connecting rob bushing

One, technical field

The utility model belongs to a kind of press assembling jig, is mainly used in the engine link assembling lining of microcephaly for wedge structure.

Two, background technology

Usually assemble the method (seeing Fig. 1,2) of lining, be directly connecting rod 1 to be placed on the supporter, connecting rod do not positioned or fix, lining 2 is enclosed within on the mandrel, mandrel is aimed at the microcephaly hole of connecting rod 1, and forcing press moves downward and promotes mandrel lining is pressed in the small end of connecting rod hole.The connecting rod that assembles lining is by follow-up machined, and the part that the removal lining is higher than the small end of connecting rod inclined-plane gets final product.Because the small end of connecting rod structure is wedge shape, when the assembling lining, bush end face is at 2 with the inclined-plane of small end of connecting rod and contacts that lining can produce and slide, distortion in assembling process, even the appearance phenomenon that can't be pressed into.Operating efficiency is very low, and product is difficult to meet specification requirement, has a strong impact on manufacturing schedule, the incompatible demand of producing in batches far away.

Three, utility model content

The main technical problems to be solved in the utility model and purpose are: the problem that occurs when the assembling lining for the connecting rod of wedge structure according to the microcephaly, design a kind of assembling jig that has positioning and fixing and accurately lead, fundamentally overcome and produce defectives such as slip, distortion in the lining assembling process, improve the quality and the efficient of connecting rob bushing assembling effectively, satisfy the demand that this kind connecting rod is produced in batches.

Main technical schemes of the present utility model: the structure of anchor clamps is, fix a support on the base right side, adjustment screw is housed on support, a groove is arranged on the base right part, wedge locating block is installed in the groove, and mandrel of coaxial installation in the hole of base right part is installed a connecting rod macropore positioning core axle at the base left part, on the both sides, front and back of positioning core axle, a locating piece is installed respectively simultaneously.

The utility model proves by practical application: anchor clamps are reliable and stable at work, guiding is good during the lining assembling, lining is pressed into quality and meets specification requirement, the assembling qualification rate rises to more than 95% by original 60%, it is about about 30% to reduce loss due to spoiled work, has solved the problem of microcephaly for the connecting rob bushing assembling difficulty of wedge structure.Can satisfy the demand that this kind connecting rod is produced in batches.

Four, description of drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is done to describe in further detail.

Fig. 1 is to have assembled connecting rod 1 front view of the microcephaly of lining 2 for wedge structure.

Fig. 2 is the lining figure before the assembling.

Fig. 3 is a complete section front view of the present utility model.

Fig. 4 is the vertical view of Fig. 3.

Fig. 5 is the view sub-anatomy that is pressed into mandrel of the present utility model.

Fig. 6, the A that is Fig. 3 are the shape figure of wedge 11 to partial view.

Five, the specific embodiment

With reference to Fig. 3,4, the utility model is made up of part such as: base 3, cushion block 4, macropore positioning core axle 5, body 6, the axis of guide 7, adjustment screw 8, screw 9, support 10, wedge locating block 11, cushion cover 12, bolt 13, bolt 17, pin 18, locating piece 19 and connecting rod 1, lining 2, connecting rod aperture 14, resigning hole 15, connecting rod macropore 16.

With reference to Fig. 3,4,5, main technical schemes of the present utility model is described: a strip cushion block 4 is installed on both sides respectively below base 3, support 10 is fixing at base 3 right flanks with two screws 9, adjustment screw 8 is housed on support 10, the groove B that a sinking is arranged on base 3 right parts, wedge locating block 11 is installed in the groove, one of coaxial installation is by the axis of guide 7 in the hole of base 3 right parts, body 6, cushion cover 12 and bolt 13 connect to form is pressed into mandrel, at base 3 left part installing connecting rods macropore positioning core axles 5, simultaneously on the both sides, front and back of macropore positioning core axle 5, by pin 18, bolt 17 is installed locating piece 19 respectively.

With reference to Fig. 1,3,5, above-described body 6, its diameter is than the little 0.05～0.1mm of lining 2 diameter of bores, and its upper flange is as the location datum level of lining; The diameter of the axis of guide 7 is than the little 0.03～0.05mm of diameter of connecting rod aperture 14; Macropore positioning core axle 5 is designed to rhombus, and its diameter is than the little 0.1mm of diameter of connecting rod macropore 16; The wedge angle α of wedge locating block 11 is identical with connecting rod 1 microcephaly's wedge angle α; Resigning hole 15 in bottom surface, base 3 the right, its diameter is than the big 2mm of diameter of the axis of guide 7; Front end at wedge locating block 11 has a semicircle orifice (see figure 6), and its diameter is identical with resigning hole 15.

With reference to Fig. 3,4, principle of the present utility model is: connecting rod 1 macropore 16 is enclosed within on the macropore positioning core axle 5 of assembling jig, regulates microcephaly's wedge locating block 11, fitted in its locating surface and connecting rod 1 microcephaly inclined-plane, guarantee that connecting rod is located fully; Then lining 2 is installed on the body 6 of mandrel, the body 6 and the axis of guide 7 is coupled together with bolt 13; The axis of guide 7 is inserted in the connecting rod aperture 14 earlier, make the axis of guide 7 and connecting rod aperture form good guiding relation; In the working position of forcing press downwards ↓ promote mandrel during motion lining 2 to be pressed in the aperture 14 of connecting rod 1; After lining assembles, take off cushion cover 12, unclamp bolt 13, the axis of guide 7 is deviate from from the resigning hole 15 of body 3 right parts, pulls up body 6, and the lining assembling finishes.Assemble the connecting rod of lining, the part that is higher than the small end of connecting rod inclined-plane by follow-up processing removal lining gets final product.

Claims

1. A fixture for assembling connecting rod bushings, including a base (3), spacers (4), screws (9), bolts (17), and pins (18), characterized in that: under the base (3) A strip spacer (4) is respectively installed on both sides, and the support (10) is fixed with two screws (9) on the right side of the base (3), the adjustment screw (8) is housed on the support (10), and the base (3) ) has a sunken groove (B) on the right part, install the wedge-shaped positioning block (11) in the groove, and coaxially install a positioning shaft (7), body (6) in the hole on the right side of the base (3). ), pad cover (12) and bolt (13) to connect the press-in mandrel, install the connecting rod big hole positioning mandrel (5) on the left part of the base (3), and at the same time position the mandrel (5) in the big hole Front and back both sides, install positioning block (19) respectively by pin (18), bolt (17).

2. The jig for assembling connecting rod bushings according to claim 1, characterized in that: the diameter of the body (6) is 0.05-0.1 mm smaller than the diameter of the inner hole of the bushing (2).

3. The jig for assembling connecting rod bushings according to claim 1, characterized in that: the diameter of the guide shaft (7) is 0.03-0.05mm smaller than the diameter of the small hole (14) of the connecting rod.

4. The jig for assembling connecting rod bushings according to claim 1, characterized in that: the diameter of the large hole positioning mandrel (5) is 0.1 mm smaller than the diameter of the connecting rod large hole (16).