CN214686498U - Tensile test spare line printer - Google Patents

Abstract

The utility model discloses a scribing machine for a tensile test piece, which is applied to the technical field of tensile testing. The assembly includes a front seat, a top shaft mounted on the front seat, and a transmission assembly for driving the top shaft to rotate. The movable center assembly includes a tailstock, a movable center mounted on the tailstock, a drive assembly for driving the movable center to telescopically move, and a A locking member for positioning the movable center; the scribing cutter body includes two sets of cutter body assemblies connected to the linear moving assembly, and the linear moving assembly is used to adjust the two sets of cutter body assemblies along the line parallel to the movable center and the top axis. Move; by implementing this technical solution, the technical problems of the existing tensile test piece being too deep and inaccurately positioned and affecting the test performance of the tensile test piece can be effectively solved, the scribed quality of the tensile test piece can be greatly improved, and the Effectively improve the scribing efficiency of tensile test pieces.

Description

A tensile test piece scribing machine

technical field

The utility model is applied to the technical field of tensile test, in particular to a scribing machine for a tensile test piece.

Background technique

Tensile testing refers to a test method for determining the properties of a material under an axial tensile load. Using the data obtained from the tensile test, the elastic limit, elongation, elastic modulus, proportional limit, area reduction, tensile strength, yield point, yield strength and other tensile properties of the material can be determined. When doing the tensile test, first of all, it is necessary to use a marking machine or a marking machine to divide the length of the tensile test specimen into equal gauge lengths. It is very important to accurately mark the tensile test piece. If it is too long or too short, it will affect the elastic limit, proportional limit, tensile strength, and yield strength properties of the tensile part if it is too deep. If it is too long or too short, it will affect the area reduction, yield point, elongation, and elastic modulus. .

However, according to the inventor's discovery in practice, most of the existing tensile test pieces are scribed by lathes or CNC lathes. On the one hand, due to the different sizes and depths of the central holes at both ends of the workpiece, the lines drawn are often on one side. There is no one side, and it is easy to draw the outer circle marks at both ends at the same time, which is prone to technical problems that affect the test performance of the tensile test piece; on the other hand, because the machine tool is a knife, only one outer circle can be drawn at a time. , and then withdraw to move the length and then draw another outer circle line, the positioning will be inaccurate, and the test performance of the tensile test piece will also be affected.

Utility model content

In view of the above-mentioned technical problems, the purpose of the present utility model is to provide a tensile test piece scribing machine, which can effectively solve the technical problems of the existing tensile test piece being too deep and inaccurate in positioning and affecting the test performance of the tensile test piece It can greatly improve the scribing quality of the tensile test piece, and at the same time, it can effectively improve the scribing efficiency of the tensile test piece, and has a good application prospect.

The technical scheme adopted by the utility model is as follows:

A tensile test piece scribing machine, the scribing machine comprises a base, a top shaft assembly arranged at one end of the base, and a movable tip assembly arranged at the other end of the base; wherein

The top shaft assembly includes a front seat, a top shaft mounted on the front seat, and a transmission assembly for driving the top shaft to rotate, the top shaft is rotatably connected with the front seat and can drive the test piece to rotate along its axial direction;

The movable center assembly includes a tailstock, a movable center mounted on the tailstock, a drive assembly for driving the movable center to telescopically move, and a locking piece for positioning the movable center; the movable center and the top shaft are located on the same line. on a straight line, respectively, for positioning the ends of the specimen; and

A scribing cutter body and a linear moving assembly, the scribing cutter body includes two sets of cutter body assemblies connected to the linear moving assembly, and the linear moving assembly is used to adjust the two sets of cutter body assemblies along parallel to the movable center and the top axis The straight line where it is located, so that the two sets of cutter body assemblies can be positioned at the scribed line positions at both ends of the specimen.

The technical scheme uses the top shaft assembly and the movable top assembly to adjust the two ends of the positioning specimen, keeps the hole positions and center heights at both ends of the positioning specimen consistent, and uses the drive assembly of the movable top assembly to adjust the telescopic movement of the movable top, which can adapt to different The length of the test piece is positioned and the positioning of the test piece is stable; and the scribing cutter body includes two sets of cutter body components, and combined with the linear moving components corresponding to the outer circle lines marked at both ends of the test piece, synchronous marking is performed to ensure that the test piece is The scribing depth of the specimen is consistent, avoiding the problem of inaccurate positioning and too deep scribing affecting the test performance of the tensile test specimen due to movement of the specimen, thereby improving the scribing quality of the tensile test specimen and improving the scribing efficiency of the tensile test specimen. .

In a preferred embodiment of the present invention, the cutter body assembly includes a cutter body, a cutter seat, an elastic piece and a blade mounted on the cutter body, one end of the elastic piece is connected to the bottom of the blade, and the other end is fixed on the blade. On the knife seat, so that the top of the blade is always in floating contact with the scribed test piece; this structural design can make the blade and the test piece in flexible contact and fit to prevent the tensile test piece from being too deep.

In a preferred embodiment of the present invention, an upside-down U-shaped limiter is provided on the knife seat, and the elastic piece is located inside the U-shaped limiter and is connected with the protrusion at the bottom of the blade, so that the The floating direction of the blade is consistent with the expansion and contraction direction of the elastic member, which can ensure the stability of the blade installation and greatly improve the scribing quality.

In a preferred embodiment of the present invention, the linear movement assembly includes a screw rod, a support located at both ends of the screw rod, and a positioning nut, the screw rod is rotatably matched with the support through a bearing, and the cutter body is slidably connected It is positioned on the screw rod and is positioned by the positioning nut; with this technical solution, the scribed position of the knife body corresponding to different test pieces can be adjusted by manually adjusting the sliding of the knife body on the screw rod, which is convenient for the movement and positioning of the knife body At the same time, in this technical solution, the cutter body and the support are rotated rather than fixedly matched, which is conducive to manual adjustment of the scribing force and further prevents the phenomenon of excessive scribing caused by the hard feeding of the machine tool.

In a preferred embodiment of the present invention, a limit shaft and an arc-shaped limit slot matched with the limit shaft are arranged on the support at one end of the screw rod, and the limit shaft is fixedly connected with the screw rod It is also arranged in an arc-shaped limit slot, which is used to limit the rotation position of the screw rod, and preferably a sign showing the rotation position of the screw rod is set in the arc-shaped limit slot; this structural design can ensure that the screw The rod has a certain rotation range, and it can be adjusted to one side after the marking and cutting is completed, which can limit the rotation range of the screw rod to be too large and affect the stability of the cutter body assembly.

In a preferred embodiment of the present invention, the transmission assembly includes a bearing mounted on the front seat and a front rocking plate located outside the front seat, the top shaft is rotatably connected to the front seat through the bearing, and the top shaft extends out of the front seat. The outer side of the seat is fixedly connected to the front rocking plate; as a preferred solution, the bearing includes an end face sliding bearing and a rolling bearing, which are used to fix the top shaft on the front seat and enable the top shaft to rotate with the front rocking plate.

In a preferred embodiment of the present invention, a baffle plate is also provided between the bearing and the front rocking plate, the baffle plate is fixedly connected with the top shaft, and the baffle plate is equipped with fastening screws, so that the baffle plate is It can be fixedly connected with the bearing to ensure the stability of the top shaft rotating with the forward swing.

In a preferred embodiment of the present utility model, the drive assembly includes a telescopic cylinder fixedly installed on the front seat and a rear rocking plate fixedly connected with the movable center, the installation end of the movable center is sleeved in the telescopic cylinder and It is threadedly connected with the telescopic cylinder, and the movable top can be telescopically moved in the telescopic cylinder by shaking the rear rocking plate; in this way, the driving component can stably drive the movable top to move to press the specimen, and the structure is simple but the adjustment and positioning are stable.

In a preferred embodiment of the present invention, the locking member is provided with a locking handle arranged along the radial direction of the telescopic cylinder, the locking member is threadedly connected to the telescopic cylinder, and the locking can be achieved by shaking the locking handle The parts move along the radial direction of the telescopic cylinder to press the movable center, which is used to lock the movable center, so as to facilitate the positioning and locking of the movable center after adjusting the position of the movable center.

In a preferred embodiment of the present invention, the linear moving assembly is arranged on the base, the movable center and the top shaft are located on the same horizontal line, and the linear moving assembly can adjust the two sets of cutter body assemblies along the fixed position. The test piece between the top and the top shaft moves horizontally in the axial direction; in this way, the positioning structure of the test piece and the scribing cutter body are located on the same base, which further ensures the accurate positioning of the specimen and the cutter body on the scribing machine.

The utility model at least has the following beneficial effects:

1. The top shaft assembly and the movable top assembly of the scribing machine of the present utility model can be positioned from the center holes at both ends of the test piece, and the hole positions and center heights at both ends of the positioning test piece are kept consistent, and the drive assembly of the movable top assembly is used. Adjusting the telescopic movement of the movable top can adapt to the positioning of specimens of different lengths, and make the specimen positioning stable and accurate in marking.

2. The scribing cutter body of the scribing machine of the present utility model includes two sets of cutter body assemblies. The two sets of cutter body assemblies are floatingly mounted on the cutter seat using elastic parts and are kept in contact with the test piece. The outer circle lines marked at both ends of the test piece are marked synchronously to ensure that the test piece is scribed at the same depth, and to avoid the problem of inaccurate positioning and excessively deep scribed lines that affect the test performance of the tensile test piece due to movement of the test piece.

3. The positioning structure and the scribing cutter body of the scribing machine test piece of the utility model are located on the same base, the scribing cutter body is stably installed and positioned, and the structure is simple. It can effectively solve the technical problems that the existing tensile test piece is too deep and inaccurately positioned and affect the test performance of the tensile test piece, which can greatly improve the scribed quality of the tensile test piece, and can effectively improve the scribed line of the tensile test piece. It has good application prospects and promotion and use value.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be It is regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained from these drawings without any creative effort.

Fig. 1 shows the structural schematic diagram of the marking machine in the embodiment of the present invention;

Fig. 2 shows the schematic diagram of using the scribing machine in the embodiment of the present utility model to scribe the test piece;

Fig. 3 shows the cross-sectional view of A-A in Fig. 2 of the embodiment of the present invention;

Fig. 4 shows the enlarged view of the cutter body assembly in the embodiment of the present invention;

Fig. 5 shows the schematic diagram of the top shaft assembly in the embodiment of the present invention;

Figure 6 shows a side view of the top shaft assembly in the embodiment of the present invention;

FIG. 7 shows a schematic diagram of the matching of the limit shaft and the arc limit groove in the embodiment of the present invention.

In the picture: 10-base; 20-top shaft assembly; 21-front seat; 22-top shaft; 23-end sliding bearing; 24-rolling bearing; 25-baffle plate; 26-fastening screw; 27-front rocking plate; 30 -Active center assembly; 31-Tailstock; 32-Active center; 33-Telescopic cylinder; 34-Back rocker; 35-Lock handle; 40-Cutter body assembly; Elastic part; 44-blade; 45-U-shaped limiter; 46-protrusion; 50-linear movement component; 51-screw; 52-support; 53-positioning nut; 54-limit shaft; 55-arc shape limit groove; 56-turn handle; 60-specimen.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

In order to make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described above are a part of the embodiments of the present invention, but not all of the embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Example 1

Referring to FIGS. 1 to 7 , the present embodiment provides a tensile test piece scribing machine. The scribing machine includes a base 10 , a top shaft assembly 20 disposed at the right end of the base 10 and a top shaft assembly 20 disposed at the left end of the base 10 . The movable top assembly 30; wherein the top shaft assembly 20 provided in this embodiment includes a front seat 21, a top shaft 22 installed on the front seat 21, and a transmission assembly for driving the top shaft 22 to rotate. The top shaft 22 is rotatably connected to the front seat 21 and It can drive the test piece to rotate along its axial direction; the movable top assembly 30 provided in this embodiment includes a tailstock 31, a movable top 32 mounted on the tailstock 31, and a drive assembly for driving the movable top 32 to move telescopically and for positioning A locking piece at the position of the movable top 32; the movable top 32 and the top shaft 22 are located on the same straight line, and are used to position the two ends of the test piece 60 respectively.

The scribing machine in this embodiment also includes a scribing cutter body 41 and a linear moving assembly 50. The scribing cutter body 41 specifically includes two sets of cutter body assemblies 40 connected to the linear moving assembly 50. The linear moving assembly 50 is used to adjust the two The knife body assembly 40 moves along a straight line parallel to the movable top 32 and the top shaft 22, so that the two knife body assemblies 40 can be correspondingly positioned at the scribed positions at both ends of the specimen; as a preferred option in this embodiment, the linear movement assembly 50 is arranged on the base 10, the movable center 32 and the top shaft 22 are located on the same horizontal line, and the linear moving assembly 50 can adjust the two sets of cutter body assemblies 40 along the axial direction of the specimen 60 fixed between the top and the top shaft 22. Move horizontally, so that the positioning structure of the test piece and the scribing cutter body 41 are located on the same base 10, which further ensures the accurate positioning of the specimen and the cutter body 41 on the scribing machine; The cutter body assembly 40 includes a cutter body 41, a cutter seat 42, an elastic member 43 and a blade 44 mounted on the cutter body 41. The elastic member 43 is preferably a spring in the prior art, and the upper end of the spring is connected to the bottom of the blade 44. The lower end is fixed on the knife holder 42, so that the top of the blade 44 is always in floating contact with the scribed test piece. This structural design can make the blade 44 and the test piece in flexible contact and fit to prevent the tensile test piece from having too deep scribed lines. Further, an inverted U-shaped limiter 45 is provided on the knife seat 42, the U-shaped limiter 45 is fixedly installed on the knife seat 42, and the spring is located on the inside of the U-shaped limiter 45 and protrudes from the bottom of the blade 44. The blocks 46 are fixedly connected, so that the floating direction of the blade 44 is consistent with the expansion and contraction direction of the spring, which can ensure the installation stability of the blade 44 and greatly improve the scribe quality.

The linear movement assembly 50 provided in this embodiment includes a screw rod 51, supports 52 at both ends of the screw rod 51, and positioning nuts 53. The screw rod 51 is rotatably matched with the support 52 fixed on the base 10 through bearings, and the cutter body assembly 40 is slidably connected to the screw rod and positioned by the positioning nut 53. Specifically, a positioning nut 53 is respectively sleeved at both ends of each cutter body 41 that is slidably connected to the screw rod, so that the cutter body 41 and the test to be marked are set. After the parts are positioned, the position of the cutter body 41 can be fixed by tightening the positioning nuts 53 at both ends with the screw rod. In this embodiment, the cutter body 41 can be adjusted to correspond to different test pieces by manually adjusting the sliding of the cutter body 41 on the screw rod. At the same time, in this embodiment, the cutter body 41 and the support 52 are rotated rather than fixedly matched, which is convenient for manual adjustment of the scribing force and further prevents the machine tool from being hard fed. Causes the phenomenon that the scribe is too deep; of course, it is not limited to this, and the sliding shaft and its matching locking member or other linear moving components 50 in the prior art can also be used to adjust the position of the positioning cutter body 41, which should be included in the within the protection scope of the present invention.

Referring to FIG. 7 , in this embodiment, a limit shaft 54 and an arc-shaped limit slot 55 matched with the limit shaft 54 are provided on the support 52 at the left end of the screw rod 51 , and the limit shaft 54 is fixedly connected with the screw rod 51 . And it is arranged in the arc limit slot 55, the arc limit slot 55 is used to limit the rotation position of the screw rod 51, and it is preferable to set a mark showing the rotation position of the screw rod in the arc limit slot 55, so as to use the knife. After the body assembly 40 completes marking the test piece, the limit shaft 54 can be rotated to the other side of the arc limit groove 55 to keep the blade 44 away from the test piece, and then the test piece can be taken out; this structural design can ensure that the screw has A certain rotation range, and then adjust it to one side after the scribing and cutting is completed, and it can limit the rotation range of the screw rod to be too large and affect the stability of the cutter body assembly 40; as the preferred embodiment of this embodiment, it is useful to have a fixed setting on the screw rod. Rotating handle 56 for driving it to rotate.

From the above, the top shaft assembly 20 and the movable tip assembly 30 of the marking machine in this embodiment can be positioned from the center holes at both ends of the test piece 60 to keep the hole positions and center heights at both ends of the positioning test piece consistent. The drive assembly of the movable tip assembly 30 adjusts the movable tip 32 to telescopically move, which can adapt to the positioning of specimens of different lengths, and makes the specimen positioning stable and accurate in scribing; crucially, the two sets of cutter bodies for scribing the specimen The assembly 40 adopts the elastic member 43 to be floatingly installed on the knife base 42 and keeps in contact with the test piece. Combined with the linear moving assembly 50, the outer circle lines marked at both ends of the test piece are synchronously marked to ensure that the test piece has a consistent marking depth. It can effectively avoid the problem of inaccurate positioning and excessively deep scribes that affect the test performance of the tensile test piece due to the movement of the test piece.

Embodiment 2

The second embodiment is basically the same as the first embodiment, the difference lies in that: as shown in FIG. 1 to FIG. 7 , the transmission assembly provided in this embodiment includes a bearing installed on the front seat 21 and a front rocking plate 27 located outside the front seat 21 . , the top shaft 22 is rotatably connected to the front seat 21 through a bearing, and the top shaft 22 extends out of the front seat 21 and is fixedly connected to the front rocking plate 27; The top shaft 22 is fixed on the front seat 21 and can make the top shaft 22 rotate with the front rocking plate 27; further, a baffle 25 is also provided between the bearing and the front rocking plate 27, and the baffle 25 is fixed to the top shaft 22 The connection and the baffle plate 25 are provided with fastening screws 26, so that the baffle plate 25 and the bearing can be fixedly connected, so as to ensure the stability of the top shaft 22 rotating with the forward rocking.

The drive assembly provided in this embodiment includes a telescopic cylinder 33 fixedly installed on the front seat 21 and a rear rocking plate 34 fixedly connected to the movable center 32 . With the connection, the movable top 32 can be telescopically moved in the telescopic cylinder 33 by shaking the rear rocking plate 34; in this way, the driving assembly can stably drive the movable top 32 to move to press the specimen, and can be adapted to the positioning of specimens of different lengths. , the movable top assembly 30 in this embodiment is simple in structure but stable in adjustment and positioning; the locking member provided in this embodiment is provided with a locking handle 35 arranged radially along the telescopic cylinder 33, and the locking member is threadedly connected with the telescopic cylinder 33, through Shaking the locking handle 35 can realize the radial movement of the locking member along the telescopic cylinder 33 to press against the movable top 32, which is used to lock the movable top 32, so as to facilitate the positioning and locking of the movable top 32 after adjusting the position thereof.

To sum up, the positioning structure of the test piece of the scribing machine and the scribing cutter body 41 in this embodiment are located on the same base 10 , the installation and positioning of the scribing cutter body 41 is stable, and the structure is simple. Scribing the tensile test piece can effectively solve the technical problems that the existing tensile test piece is too deep and inaccurately positioned and affect the test performance of the tensile test piece. It can greatly improve the scribe quality of the tensile test piece, and can effectively The improvement of the scribing efficiency of the tensile test piece 60 has good application prospects and promotion and use value, and is suitable for promotion and application.

The description and drawings of the present utility model are considered to be illustrative rather than restrictive. On the basis of the present utility model, those skilled in the art can, based on the disclosed technical content, do not need creative work to understand some of the technical features. Some replacements and deformations are made within the protection scope of the present invention.

Claims (10)

1. The utility model provides a tensile test spare ruling machine which characterized in that: the scribing machine comprises a base, a top shaft assembly arranged at one end of the base and a movable top assembly arranged at the other end of the base; wherein

The jacking shaft assembly comprises a front seat, a jacking shaft arranged on the front seat and a transmission assembly for driving the jacking shaft to rotate, and the jacking shaft is rotatably connected with the front seat and can drive the test piece to rotate along the axial direction of the test piece;

the movable center assembly comprises a tailstock, a movable center arranged on the tailstock, a driving assembly used for driving the movable center to move in a telescopic mode and a locking piece used for positioning the position of the movable center; the movable center and the top shaft are positioned on the same straight line and are respectively used for positioning two ends of the test piece; and

the scribing cutter comprises a scribing cutter body and a linear moving assembly, wherein the scribing cutter body comprises two cutter body assemblies connected to the linear moving assembly, and the linear moving assembly is used for adjusting the two cutter body assemblies to move along a straight line parallel to the movable center and the top shaft, so that the two cutter body assemblies can be correspondingly positioned at scribing positions at two ends of a test piece.

2. The tensile test piece scribing machine according to claim 1, wherein: the cutter body assembly comprises a cutter body, a cutter holder, an elastic piece and a blade, wherein the cutter holder, the elastic piece and the blade are installed on the cutter body, one end of the elastic piece is connected with the bottom of the blade, and the other end of the elastic piece is fixed on the cutter holder, so that the top of the blade is in floating contact with and matched with a scribing test piece all the time.

3. The tensile test piece scribing machine according to claim 2, wherein: the tool apron is provided with an inverted U-shaped limiting part, and the elastic part is positioned on the inner side of the U-shaped limiting part and connected with the lug at the bottom of the blade, so that the floating direction of the blade is consistent with the telescopic direction of the elastic part.

4. The tensile test piece scribing machine according to claim 2, wherein: the linear moving assembly comprises a screw rod, supports and positioning nuts, the supports and the positioning nuts are located at two ends of the screw rod, the screw rod is in running fit with the supports through bearings, and the cutter body is connected to the screw rod in a sliding mode and is positioned through the positioning nuts.

5. The tensile test piece scribing machine according to claim 4, wherein: the screw rod fixing device is characterized in that a limiting shaft and an arc-shaped limiting groove matched with the limiting shaft are arranged on the support at one end of the screw rod, the limiting shaft is fixedly connected with the screw rod and is arranged in the arc-shaped limiting groove in a matched mode, the arc-shaped limiting groove is used for limiting the rotating position of the screw rod, and an identification for displaying the rotating position of the screw rod is arranged in the arc-shaped limiting groove.

6. The tensile test piece scribing machine according to any one of claims 1 to 5, wherein: the transmission assembly comprises a bearing arranged on the front seat and a front rocking disc positioned outside the front seat, the top shaft is rotatably connected with the front seat through the bearing, and the top shaft extends out of the outer side of the front seat to be fixedly connected with the front rocking disc.

7. The tensile test piece scribing machine according to claim 6, wherein: still be provided with the baffle between bearing and the preceding rocking disc, baffle and apical axis fixed connection and baffle configuration have fastening screw to make baffle and bearing can fix and link to each other.

8. The tensile test piece scribing machine according to any one of claims 1 to 5, wherein: the driving assembly comprises a telescopic cylinder fixedly mounted on the front seat and a rear rocking disc fixedly connected with the live center, the mounting end of the live center is sleeved in the telescopic cylinder and is in threaded fit connection with the telescopic cylinder, and the live center can stretch and move in the telescopic cylinder by rocking the rear rocking disc.

9. The tensile test piece scribing machine according to claim 8, wherein: the locking piece is provided with a locking handle arranged along the radial direction of the telescopic cylinder, the locking piece is in threaded connection with the telescopic cylinder, and the locking piece can move along the radial direction of the telescopic cylinder to tightly push the live center by shaking the locking handle for locking the live center.

10. The tensile test piece scribing machine according to claim 1, wherein: the linear moving assembly is arranged on the base, the movable center and the jacking shaft are located on the same horizontal straight line, and the linear moving assembly can adjust the two cutter body assemblies to horizontally move along the axial direction of a test piece fixed between the movable center and the jacking shaft.

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