CN203526992U

CN203526992U - Special clamp for sample machining

Info

Publication number: CN203526992U
Application number: CN201320561389.8U
Authority: CN
Inventors: 刘博�; 赵军; 程松; 李彦波; 贺振国; 左丽峰
Original assignee: Hebei Iron And Steel Co Ltd Handan Branch
Current assignee: Hebei Iron And Steel Co Ltd Handan Branch
Priority date: 2013-09-11
Filing date: 2013-09-11
Publication date: 2014-04-09
Anticipated expiration: 2023-09-11

Abstract

The utility model discloses a special clamp for sample machining. The special clamp for sample machining comprises chucks which are symmetrically arranged. The opposite sides of the chucks are provided with V-shaped grooves, and the inner walls of the V-shaped grooves are provided with vertical grooves, wherein the sections of the vertical grooves are in V shapes and in the same direction with the V-shaped grooves. The distance of the two adjacent vertical grooves is equal to the width of an upper opening of each V-shaped groove. The special clamp for sample machining has the advantages that due to the fact that a circle of burr is prone to formation in the sampling process of a sample waist portion, containing grooves are formed in the inner walls of the V-shaped grooves to contain the circle of burr of the sample waist portion. The contact area of the sample and the inner walls of the V-shaped grooves is enlarged, in addition, bar-shaped grooves are evenly formed in the inner walls of the V-shaped grooves, clamping force of the chucks on the sample is enlarged, the sample is prevented from slipping or inclining or falling in the machining process and prevented from being vibrated, the machining effect is improved, and the machining efficiency is improved.

Description

Sample Special Fixture for Machining

Technical field

The utility model relates to metallurgy industry sample process unit technical field, relates in particular to a kind of sample Special Fixture for Machining.

Background technology

In metallurgical sample making apparatus technical field, automatic milling machine, sample grinding machine are common sample making apparatus, can prepare various steel, iron sample, through to the roughing of sample surfaces, cooling after, be processed into smooth bright and clean surface, be usually used in the large-scale precision analytical instrument such as photo-electric direct reading spectrometer, X-fluorescence spectrometer, and analyze multiple element.In the producing of sample preparation, exist sample preparation amount large, use the phenomenons such as frequent, make sample making apparatus in the process of using, occur that sample captures fault, through the accumulation of practical experience, be not difficult to find, producing in process of sample, sample must be without burr, sample is if any sprue gate, before putting into sampling machine, must excise, length is no more than 10mm, and folder sample fixture (tooth) fails reliably to clamp sample in process of lapping, often there is specimen sample skidding, can only lean on operating personnel's experience to remove burr with sensation, more time-consuming, effort.And cause the fault of automatic milling machine, sample grinding machine folder sample head to increase, thus causing pressing from both sides the vibration of sample head, the vibration that folder sample produces can cause abrasive band damage (tearing abrasive band) phenomenon often to occur.All the problems referred to above are all to use at present the defect of automatic milling machine, sample grinding machine equipment folder sample jig Design, are necessary to invent a kind ofly can ensure the full-automatic sample preparation folder of specimen sample utility model non-slip, that do not drop sample fixture for this reason.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of sample Special Fixture for Machining, by uniformly vertical groove is set on V-shaped groove inwall, increasing friction force, guarantee that sample is non-slip, the burr region that holds sample waist by holding tank is set on V-shaped groove inwall, sample is contacted more complete with V-shaped groove, prevent that sample from dropping.

For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of sample Special Fixture for Machining, comprise symmetrically arranged chuck, the relative side of chuck is equipped with V-shaped groove, on described V-shaped groove inwall, be evenly provided with vertical groove, the cross section of described groove is that V-arrangement and direction are consistent with the direction of V-shaped groove, and the distance of adjacent notches equals its width suitable for reading.

On described V-shaped groove inwall, being also provided with cross section is the burr holding tank of arc, and described burr holding tank is horizontally disposed with.

Described chuck outside is all hinged with driving mechanism, and described chuck bottom is all slidably connected with guiding mechanism.

The beneficial effect that adopts technique scheme to produce is: because sample waist easily forms a circle burr in sampling process, by holding tank being set on V-shaped groove inwall, for holding a circle burr of sample waist, the contact area that increases sample and V-shaped groove inwall evenly arranges bar-shaped trough in addition on V-shaped groove inwall, increases the chucking power of chuck to sample, prevent that sample skids in process, tilt or drop, prevent sample vibration, improve processing effect, improve working (machining) efficiency.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation;

Fig. 2 is that the utility model is used view;

In the accompanying drawings: 1, chuck; 2, groove; 3, holding tank; 4, sample.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

As shown in Figure 1, the utility model discloses a kind of sample Special Fixture for Machining, comprise symmetrically arranged chuck 1, the relative side of chuck 1 is equipped with V-shaped groove, on described V-shaped groove inwall, be evenly provided with vertical groove 2, the cross section of described vertical groove 2 is V-arrangement, and direction is consistent with the direction of V-shaped groove, the distance of adjacent vertical groove 2 equals its width suitable for reading, on described V-shaped groove inwall, being also provided with cross section is the burr holding tank 3 of arc, described burr holding tank 3 is horizontally disposed with, described chuck 1 outside is all hinged with driving mechanism, described chuck 1 bottom is all slidably connected with guiding mechanism.

The middle part of existing chuck is V-type groove, the side of blocking sample by the V-shaped groove of two chucks during folder sample, two V-type grooves can firmly block sample by Pneumatic pressure in theory, but because the side of sample is not smooth plane, but there is an irregular circle burr in center waist, protrude from sample side, this is because sample forms in sampling process, and be prevalent in each sample, the utility model is by the improvement to V-shaped groove inwall, guarantee firm grip sample, in concrete application process, first get a production sample, with vernier caliper measurement specimen height H, manual operation sample making apparatus, make this sample of clamp clamps, with vernier caliper measurement sample upper surface, exceed the height h ＇ of fixture upper limb, in addition, also need with vernier caliper measurement sample without the diameter D of spur location and the diameter D ＇ at burr place, thereby calculate height d ＇=(D ＇-D)/2 of burr, and the depth d of holding tank should be slightly larger than burr height d ＇, then according to on-the-spot DATA REASONING during to milling sample machine folder sample repeatedly, and to the chuck of serious wear is measured embodiment, because sample burr is held the medium position of face in sample, can calculate sample burr apart from the height h=H/2-h ＇ of fixture upper limb, the height of the holding tank centre-to-centre spacing chuck upper limb that highly this newly open.

Actual measurement and result of calculation is, holding tank middle part is 2mm apart from the height of fixture upper limb, holds groove depth 1mm, in addition, sets that to hold careless groove high be 2mm, and when guaranteeing that fluctuation occurs specimen height, burr can be embedded in holding tank completely.

V-type groove after redesign, can be in folder sample process, avoid the crest line at sample waist center, thereby make V-type groove directly and sample contacts side surfaces, burr is embedded in holding tank, and is held face and fixture fits tightly, thereby sample is firmly clamped, effectively prevent that the sample situation about tilting of skidding from occurring, guarantee that specimen surface prepares smooth.At chuck inwall, evenly set up strip slot, the strip slot evenly arranging can clamp specimen surface more fully, thereby the anti-skidding effect that the face that better reaches contacts with face prevents that sample from skidding.

The utility model by arranging holding tank on V-shaped groove inwall, for holding a circle burr of sample waist, increase the contact area of sample and V-shaped groove inwall, bar-shaped trough is evenly set in addition on V-shaped groove inwall, increase the chucking power of chuck to sample, prevent that sample skids in process, tilt or drop, prevent sample vibration, improve processing effect, improve working (machining) efficiency.

Claims

1. a sample Special Fixture for Machining, comprise symmetrically arranged chuck (1), the relative side of chuck (1) is equipped with V-shaped groove, it is characterized in that: on described V-shaped groove inwall, be evenly provided with vertical groove (2), the cross section of described vertical groove (2) is that V-arrangement and direction are consistent with the direction of V-shaped groove, and the distance of adjacent vertical groove (2) equals its width suitable for reading.

2. sample Special Fixture for Machining according to claim 1, is characterized in that: on described V-shaped groove inwall, being also provided with cross section is the burr holding tank (3) of arc, and described burr holding tank (3) is horizontally disposed with.

3. sample Special Fixture for Machining according to claim 1 and 2, is characterized in that: described chuck (1) outside is all hinged with driving mechanism, and described chuck (1) bottom is all slidably connected with guiding mechanism.