CN204664090U - Balance rivet - Google Patents

Abstract

The utility model discloses a kind of balance rivet, comprise rivet set and the rivet rod of one connection, it is characterized in that: described rivet rod is provided with the blind hole of cold-heading drilling forming, blind hole ingress is provided with the guiding fillet of cold-heading molding, the copper layer that balance rivet surface has plating to be formed.Present solution provides a kind of balance rivet of cold-heading drilling forming, avoid the burr that machining produces, work efficiency is high.

Description

Balance rivet

Technical field

The utility model relates to a kind of balance rivet, belongs to rivet technology field.

Background technique

Balance rivet automobile clutch plays dynamically balanced accessory, and the weight being increased a certain position of these parts by riveting on rotatable parts makes rotation more balance.This balance rivet of traditional mode of production is processed usually on lathe, and easily produce burr, reject rate is high, and operation is loaded down with trivial details, and manufacturing efficiency is low.

Model utility content

For the deficiency that prior art exists, the purpose of this utility model is the balance rivet providing a kind of cold-heading drilling forming, and avoid the burr that machining produces, work efficiency is high.

For achieving the above object, the utility model provides following technological scheme: a kind of balance rivet, comprise rivet set and the rivet rod of one connection, described rivet rod is provided with the blind hole of cold-heading drilling forming, blind hole ingress is provided with the guiding fillet of cold-heading molding, the copper layer that balance rivet surface has plating to be formed.

Preferably, described rivet set and rivet rod intersection are provided with knuckle.

Preferably, described rivet set is the shaping disc-shaped structure of cold pier.

Preferably, the material balancing rivet is cold pier steel.

By adopting technique scheme, it is shaping that cold pier is directly carried out by supporting mould in hole on rivet rod on Cold header, avoid the generation of blind hole inner burr, allow balance rivet metal structure finer and closely woven simultaneously, intensity is better, once cold pier is shaping for guiding fillet and blind hole, and decrease process step, manufacturing efficiency is more increased.Balance rivet surface-brightening can not only be allowed to have texture at balance rivet copper coating, and utilize the good lubricating ability of copper and antirust ability, can coordinate with guiding fillet the rotatable parts facilitating riveting to enter clutch, and long-term antirust ability.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is front view of the present utility model;

Fig. 2 is stereogram of the present utility model.

Accompanying drawing illustrates: 1, rivet rod; 2, rivet set; 3, blind hole; 4, lead fillet; 5, knuckle; 6, copper layer.

Embodiment

A kind of balance rivet, comprise rivet set 2 and the rivet rod 1 of one connection, rivet set 2 diameter is 11mm, length is 2.6mm, rivet rod 1 diameter is 6mm, and length is 7.5mm, and rivet rod 1 is provided with the blind hole 3 of cold-heading drilling forming, the diameter of blind hole 3 is 4.1mm, the degree of depth is 5mm, and blind hole 3 ingress is provided with the guiding fillet 4 of cold-heading molding, the copper layer 6 that balance rivet surface has plating to be formed, the thickness of copper layer 6 is preferably less than 20 microns, can ensure that copper layer 6 thickness is even.It is shaping that cold pier is directly carried out by supporting mould in hole on rivet rod 1 on Cold header, avoids the generation of blind hole 3 inner burr, allows balance rivet metal structure finer and closely woven simultaneously, intensity is better, once cold pier is shaping with blind hole 3 for guiding fillet 4, and decrease process step, manufacturing efficiency is more increased.Balance rivet surface-brightening can not only be allowed to have texture at balance rivet copper coating, and utilize the good lubricating ability of copper and antirust ability, can coordinate with guiding fillet 4 rotatable parts facilitating riveting to enter clutch, and long-term antirust ability.

Wherein, rivet set 2 and rivet rod 1 intersection are provided with knuckle 5, and the maximum radius of knuckle 5 is no more than 0.3mm, and excessive rivet set 2 surface that easily causes narrows with clutch rotatable parts area of contact, affects the steadiness of rivet.Arranging when knuckle 5 can make rivet rod 1 or rivet set 2 be subject to radial force avoids stress to focus on both intersections, causes balance rivet occur crackle or pull.

Wherein, rivet set 2 is the shaping disc-shaped structure of cold pier.Rivet set 2 profile of disc-shaped structure does not have wedge angle, avoids the part inside scratch clutch, and the shaping Making mold of the cold pier of discoid structure is easy, and the cold pier surperficial packing material of rivet set 2 is out abundant.

Wherein, the material balancing rivet is cold pier steel.Cold pier steel has good plasticity at normal temperatures.

The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (4)

1. balance a rivet, comprise rivet set and the rivet rod of one connection, it is characterized in that: described rivet rod is provided with the blind hole of cold-heading drilling forming, blind hole ingress is provided with the guiding fillet of cold-heading molding, the copper layer that balance rivet surface has plating to be formed.

2. balance rivet according to claim 1, is characterized in that: described rivet set and rivet rod intersection are provided with knuckle.

3. balance rivet according to claim 2, is characterized in that: described rivet set is the shaping disc-shaped structure of cold pier.

4. balance rivet according to claim 3, is characterized in that: the material of balance rivet is cold pier steel.