CN213336985U

CN213336985U - Auxiliary tool for forming notch of impact sample

Info

Publication number: CN213336985U
Application number: CN202021356538.3U
Authority: CN
Inventors: 胡海波; 李国忠; 许晓红; 白云; 范海东; 郎永胜
Original assignee: Jiangyin Xingcheng Special Steel Works Co Ltd
Current assignee: Jiangyin Xingcheng Special Steel Works Co Ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-06-01
Anticipated expiration: 2030-07-13

Abstract

The utility model relates to a be used for impacting fashioned auxiliary fixtures of sample breach, including the sample seat, the broach hole is seted up at the center of sample seat, and the sample seat has two sample grooves, and two sample grooves are located the both sides of broach hole, and two tooth holes of broach hole interfere with the sample groove one-to-one that corresponds the side respectively, and the broach that two-sided all has the tooth is installed perpendicularly in the broach hole, tooth and tooth hole cooperation, broach driven is pulling perpendicularly in the broach hole, fixes through the tooth pair sample fluting in the sample groove. This application has realized that two samples slot simultaneously, lets broach both sides atress symmetry from this, avoids the broach to the single face slope, not only improves fluting efficiency but also helps protecting the broach.

Description

Auxiliary tool for forming notch of impact sample

Technical Field

The utility model relates to a fashioned auxiliary fixtures of impact specimen breach mainly is the notch that is used for accurate processing impact specimen.

Background

The purpose of making the notch in the impact specimen is to make the reaction sensitive to various small changes of the internal factors of the material in the aspect of impact toughness, stress concentration and strain concentration are generated near the notch after the notch specimen receives the impact, the stress distribution in front of the notch is changed, a three-dimensional unequal stress state is formed, the plastic deformation is restrained by different degrees in the state, and therefore the notch promotes the embrittlement of the material. However, even if the test materials are the same, the stress state of the notch is different, and the obtained impact absorption power is also different. Meanwhile, there are many factors that affect the mechanical properties, such as sampling, sample processing, materials themselves, testing equipment, testing methods, testing temperature, i.e., personnel, etc., and the sample processing quality is an important factor. Most of charpy V-shaped notch impact test samples cannot meet the high standard requirements all the time, particularly the notch part is processed in size, if the notch is sharper and deeper, the plastic deformation volume is smaller, the impact absorption power is smaller, the impact power of the tested material is lower, and the impact results have the characteristics of difficult prediction, sudden performance and the like. Through the analysis of the impact notch, the data of the trend and the size of the notch of the impact notch are researched, the reason and the influence factor for processing the Charpy V-shaped notch are found out, and corresponding preventive measures are provided.

In the process of broaching the impact notch by using the broaching tool, the broaching tool is usually only used for single-side broaching, a sample stop block is abraded for a long time, the broaching tool is influenced by stress and is always shallower for processing the notch, and the edge of the broaching tool is flatter and flatter or the broaching tool inclines to the other side. Therefore, great difficulty is brought to notch processing, and the service life of the broaching tool is greatly reduced. Therefore, the precise characteristic of processing the impact notch is ensured under the condition of protecting the broach of the impact groove-drawing testing machine.

At present, common methods for machining the Charpy V-shaped notch are as follows: (1) the machining method of the wire cutting machine is carried out on a numerical control wire cutting machine, an operator can machine the ideal pattern only by compiling a working program, the machining efficiency is too low, and the machining method is only suitable for the situation of using a small amount of precision; (2) the broaching machine processing method is characterized in that a workpiece is tightly attached to an end plate and is tightly placed on a platform, a transmission device drives a broach to do linear motion, and the broach is formed in one step.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an auxiliary fixtures, this auxiliary fixtures can fix two samples, and the centre sets up the broach hole, and the broach is in the downthehole perpendicular pulling of pulling, and the tooth on broach two sides corresponds respectively and acts on two samples, realizes that two samples are slotted simultaneously, lets broach two sides atress symmetry from this, and balanced broach avoids the broach to the single face slope.

The technical scheme of the utility model is that: the utility model provides a be used for impacting fashioned auxiliary fixtures of sample breach, includes the sample holder, broach hole is seted up at the center of sample holder, the sample holder has two sample grooves, two the sample groove is located the both sides of broach hole, two of broach hole the broach is interfered with the sample groove one-to-one that corresponds the side respectively, and the broach that two-sided all had the tooth is installed perpendicularly in the broach hole, the tooth with the perforation cooperation, broach receive the drive and be in the downthehole perpendicular pulling of broach, through the tooth is to fixing sample fluting in the sample groove.

Preferably, the sample well is matched to the shape of the sample, thereby allowing the sample well to position the sample.

Preferably, the sample holder is of a flat plate structure, and fixing holes are formed in the edge of the sample holder.

Preferably, the sample slot is located on an edge of the sample holder, and the sample slot is located in the middle of the edge.

The utility model provides an auxiliary fixtures is for being used for the sample seat of fixed sample, and this sample seat is used for realizing that two samples open the groove simultaneously, and the pulling hole is located in the middle of two sample grooves, and the broach is installed perpendicularly at the pulling downthehole, and the broach is two-sided to set up the tooth, and the broach is at the downthehole perpendicular pulling of broach, and the tooth on two sides is simultaneously to the sample fluting. Because the two sides of the broach are stressed, the broach is not easy to shift to a single side, and a stop block for preventing the broach from shifting to the single side is also saved.

Compared with the prior art, the utility model has the advantages of:

(1) the broach is mainly used for ensuring that the machining of the impact notch is accurate, and the broach is protected and durable.

(2) The defects of incomplete sample processing, complex operation, long sample processing assembly time and the like are overcome.

(3) Both sides of the broach can be processed simultaneously, so that the processing of only one side is reduced, and the broach is always on the axis of linear motion.

(4) The two sides of the broach can be operated simultaneously, so that the working efficiency is improved, and the service life is prolonged.

Drawings

Fig. 1 is a schematic structural view of an auxiliary tool in an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1, the auxiliary tool for notch forming of an impact sample in this embodiment includes a sample holder 1, the sample holder is a square flat plate, bolt holes 4 are respectively formed at four corners of the sample holder, a broach hole 2 is formed at the center of the sample holder 1, the broach hole 2 has two tooth holes 5, the sample holder 1 has two sample grooves 3, the two sample grooves 3 are respectively located between two long sides of the sample holder 1, the two tooth holes 5 of the broach hole 2 respectively interfere with the sample grooves 3 on the corresponding sides in a one-to-one correspondence manner, broaches with teeth on both sides are vertically installed in the broach holes 2, the teeth are matched with the tooth holes 5, the broaches are driven to be pulled in the broach holes 2 perpendicularly to the sample holder 1, and the sample fixed in the sample grooves 3 is grooved by the teeth in the tooth holes 5.

Manufacturing a structure:

(1) a sample seat: length 124 × width 102 × thickness 12 (mm).

(2) Broaching: is vertically arranged in the broach hole.

(3) A sample tank: processing sample grooves for placing samples on two opposite surfaces of the sample seat, reserving 34 mm on two sides of the middle length of the sample seat, and reserving the middle groove distance of 56 multiplied by 10 mm

(4) Fixing bolt holes: four angles of the sample seat are provided with fixing bolt holes 4, and an auxiliary tool is fixed on the equipment

The utility model provides an auxiliary fixtures is to V type breach impact tester's improvement:

(1) firstly, disassembling an original split type sample stop block and a pad platform, and processing the high-strength wear-resistant steel waste material qualified in detection into the auxiliary tool with the structure;

(2) then, the auxiliary tool is installed on the testing machine, and the auxiliary tool and the testing machine form a whole by screwing the four-corner bolts;

(3) because the sample groove is arranged in the middle, the vertical centering time of the cushion block is saved, and the impact samples on two sides of the broach can be simultaneously and accurately processed;

(4) the structure is simple, the manufacturing cost is low, the centering assembly of the sample is accelerated, and the flexibility and the accuracy of the impact processing grooving are improved;

(5) and finally, after slotting is finished, unloading the notch to process the accurate sample.

Although the preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a be used for fashioned auxiliary fixtures of impact specimen breach which characterized in that: the test sample holder is characterized by comprising a test sample holder, wherein a broach hole is formed in the center of the test sample holder, the test sample holder is provided with two test sample grooves, the two test sample grooves are located on two sides of the broach hole, two tooth holes of the broach hole are respectively interfered with the test sample grooves on the corresponding sides in a one-to-one correspondence mode, broaches with teeth on two sides are perpendicularly installed in the broach hole, the teeth are matched with the tooth holes, the broaches are driven to be perpendicularly pulled in the broach hole, and through the teeth, the teeth are fixed on test samples in the test sample grooves in a grooving mode.

2. The auxiliary tool for forming the notch of the impact specimen according to claim 1, wherein: the sample well is matched to the shape of the sample, thereby allowing the sample well to position the sample.

3. The auxiliary tool for forming the notch of the impact specimen according to claim 1, wherein: the sample holder is of a flat plate structure, and fixing holes are formed in the edge of the sample holder.

4. The auxiliary tool for forming the notch of the impact specimen according to claim 3, wherein: the sample groove is located on the edge of the sample seat, and the sample groove is arranged in the middle of the edge.