CN203993860U - Spring scriber - Google Patents

Abstract

The utility model belongs to part process technology, and the utility model provides a kind of spring scriber, comprising: extension bar and scriber needle point, hollow and lower ending opening in described extension bar, on the sidewall of extension bar, have elongated slot, extension bar built-in spring, spring upper end withstands on extension bar inner top; Described scriber needle point front end is cone, scriber needle point rear end is cylinder, described scriber needle point external diameter and extension bar internal diameter are adaptive, described scriber needle point cylindrical sidewall is connected with horizontal backing pin, the elongated slot width of backing pin diameter and extension bar sidewall is adaptive, the barrel portion of scriber needle point upwards stretches in extension bar and withstands on spring lower end from extension bar lower ending opening, and the backing pin that scriber needle point cylindrical sidewall connects stretches out from the elongated slot of extension bar sidewall.

Description

Spring scriber

Technical field

The utility model belongs to part process technology, relates to a kind of spring scriber.

Background technology

Metal parts blank surface is as forging part surface irregularity, before processing parts, need artificial all processing trim lines of drawing, to judge that whether part dimension surplus is sufficient, the line cycle is longer, changed into afterwards, it is that scriber follow procedure is drawn External Shape line on forging part blank surface that Digit Control Machine Tool is used with sharp draw point, but blank surface irregularity, often produce scriber needle point and penetrate inside parts, the phenomenon that scriber tip fractures.

Utility model content

The purpose of this utility model: a kind of spring scriber is provided, and scriber tip is frangibility not.

The technical solution of the utility model: a kind of spring scriber, comprising:

Extension bar and scriber needle point, in described extension bar, hollow and lower ending opening, have elongated slot on the sidewall of extension bar, extension bar built-in spring, spring upper end withstands on extension bar inner top; Described scriber needle point front end is cone, scriber needle point rear end is cylinder, described scriber needle point external diameter and extension bar internal diameter are adaptive, described scriber needle point cylindrical sidewall is connected with horizontal backing pin, the elongated slot width of backing pin diameter and extension bar sidewall is adaptive, the barrel portion of scriber needle point upwards stretches in extension bar and withstands on spring lower end from extension bar lower ending opening, and the backing pin that scriber needle point cylindrical sidewall connects stretches out from the elongated slot of extension bar sidewall.

Advantage of the present utility model: scriber needle point can stretch up and down, during use, needle point can be flexible back and forth along with blank surface undulation, and needle point just can not penetrate inside parts, the phenomenon of having avoided needle point to fracture like this.

Accompanying drawing explanation:

Fig. 1 is extension bar structural representation of the present utility model.

Fig. 2 is the utility model spring scriber overall structure schematic diagram.

Fig. 3 is that the utility model spring scriber is used schematic diagram.

The specific embodiment:

Below in conjunction with accompanying drawing, the utility model is described in further detail.

A spring scriber, as shown in Figure 1, 2, 3, comprising:

Extension bar 1 and scriber needle point 4, the interior hollow of described extension bar 1 and lower ending opening, have elongated slot 3 on the sidewall of extension bar, extension bar built-in spring 8, spring 8 upper ends withstand on extension bar inner top; Described scriber needle point 4 front ends are cone 5, scriber needle point 4 rear ends are cylinder, described scriber needle point 4 external diameters and extension bar internal diameter 2 adaptations, described scriber needle point cylindrical sidewall is connected with horizontal backing pin 7, elongated slot 3 width of backing pin 7 diameters and extension bar sidewall are adaptive, the barrel portion of scriber needle point 4 upwards stretches in extension bar 1 and withstands on spring 8 lower ends from extension bar 1 lower ending opening, and the backing pin 7 that scriber needle point 4 cylindrical sidewall connect stretches out from the elongated slot 3 of extension bar 1 sidewall.

Concrete, scriber needle point cylindrical sidewall and backing pin 7 can be one, and scriber needle point cylinder and backing pin 7 are made elastomeric material, and the related backing pin 7 of scriber needle point cylinder is clamp-oned from extension bar 1 lower ending opening together, and then backing pin 7 is from elongated slot 3 ejections.Or, in scriber needle point cylindrical sidewall, open connecting hole 6, first scriber needle point cylinder is upwards headed into extension bar 1 from extension bar 1 lower ending opening, when connecting hole 6 exposes from the elongated slot 3 of extension bar 1 sidewall, backing pin 7 is inserted to connecting hole 6, and backing pin 7 adopts interference fit with connecting hole 6.

During use, extension bar 1 rear end is fixed on lathe, and scriber needle point stretches back and forth along with blank surface 9 rises and falls when setting-out, and needle point just can not penetrate blank inside, the phenomenon of having avoided needle point to fracture like this.

Claims (1)

1. a spring scriber, is characterized in that, comprising:

Extension bar and scriber needle point, in described extension bar, hollow and lower ending opening, have elongated slot on the sidewall of extension bar, extension bar built-in spring, spring upper end withstands on extension bar inner top; Described scriber needle point front end is cone, scriber needle point rear end is cylinder, described scriber needle point external diameter and extension bar internal diameter are adaptive, described scriber needle point cylindrical sidewall is connected with horizontal backing pin, the elongated slot width of backing pin diameter and extension bar sidewall is adaptive, the barrel portion of scriber needle point upwards stretches in extension bar and withstands on spring lower end from extension bar lower ending opening, and the backing pin that scriber needle point cylindrical sidewall connects stretches out from the elongated slot of extension bar sidewall.