Impact Specimen Notch Machining Positioning Device and Machining Broaching Machine

Abstract

This utility model belongs to the field of metal impact testing technology, and discloses an impact specimen notch machining positioning device and a machining broaching machine. The impact specimen notch machining positioning device includes a fixed bracket, an adjusting structure, and two oppositely arranged fixed blocks. The fixed bracket has a drive screw along a first direction, with a first threaded portion at one end and a second threaded portion at the other end, the first and second threaded portions having opposite helical directions. One of the two fixed blocks is connected to the first threaded portion, and the other is connected to the second threaded portion. The drive screw rotates around its own axis to move the two fixed blocks closer together or further apart. The adjusting structure is located on the fixed bracket at the midpoint of the line connecting the two fixed blocks, and its position along a second direction is adjustable. This impact specimen notch machining positioning device can improve the accuracy of impact specimen notch positioning and allows for controllable machining depth, reducing the adjustment time required during machining.

Description

Technical Field

[0001] This utility model relates to the field of metal impact testing technology, and in particular to an impact specimen notch machining and positioning device and a machining broaching machine. Background Technology

[0002] Impact testing is one of the most common and frequently used tests for the mechanical properties of metallic materials. It is widely used in almost all industrial and research fields, including metallurgy, machinery, oil and gas, chemical industry, automobile, railway, aerospace, military industry, and metrology.

[0003] A broaching machine is a common impact testing tool used to machine notches on impact specimens. It can machine round holes, spline holes, keyways, etc. Existing broaching machines typically consist of a broach, a transmission device, and a specimen stage. The broach surface has V-shaped or U-shaped cutter teeth, which can produce V-shaped or U-shaped notches on the impact specimen.

[0004] During the processing of impact test specimens, the required specimen length is 55±0.6 mm, and a notch is cut in the middle of the specimen. The distance between the notch's symmetrical plane and the specimen end is required to be 27.5±0.42 mm. Existing broaching machines all use end-positioning, visually or manually scribing to determine the center position of the impact specimen. This is not only inefficient but also prone to misalignment of the notch, resulting in poor positioning accuracy. Furthermore, as the broach wears down, the depth of the notch formed by the broach decreases, making the notch depth unsuitable for impact testing and affecting the accuracy of the test results.

[0005] Therefore, there is an urgent need to provide a new type of impact specimen notch machining positioning device and machining broaching machine to solve the above-mentioned technical problems in the prior art. Utility Model Content

[0006] The purpose of this invention is to provide an impact specimen notch processing and positioning device, which can improve the accuracy of impact specimen notch positioning and make the processing depth controllable, thereby reducing the adjustment time required during processing.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] The impact specimen notch processing and positioning device includes a fixed bracket, an adjusting structure, and two opposing fixed blocks. A drive screw is threaded through the fixed bracket along a first direction. One end of the drive screw along the first direction has a first thread, and the other end has a second thread. The first and second thread directions are opposite. One of the two fixed blocks is threaded to the first thread, and the other is threaded to the second thread. The drive screw can rotate around its own axis to move the two fixed blocks closer together or further apart, allowing the impact specimen body to be clamped between the two fixed blocks. The adjusting structure is located on the fixed bracket at the midpoint of the line connecting the two fixed blocks. The position of the adjusting structure along a second direction is adjustable. The projection of the end of the adjusting structure along the vertical direction onto the impact specimen body corresponds to the depth of the notch in the impact specimen body.

[0009] Optionally, the fixing block includes a mounting part and a positioning part. The mounting part is threadedly connected to the first threaded part or the second threaded part, and the impact specimen body can be clamped between the two positioning parts. The positioning part is disposed on the top wall of the mounting part, and the impact specimen body can abut against the top wall of the mounting part.

[0010] Optionally, the positioning part is provided with a positioning groove at one end near the impact specimen body along the first direction, and the inner wall of the positioning groove can abut against the edge of the impact specimen body.

[0011] Optionally, the dimensions of the positioning groove along the second direction gradually decrease from the port of the positioning groove to the bottom of the positioning groove; the positioning groove is V-shaped, arc-shaped, or trapezoidal.

[0012] Optionally, either end of the aforementioned drive screw protrudes from either of the aforementioned fixing blocks, so that the drive screw is connected to the output end of the drive member.

[0013] Optionally, the driving component includes a drive motor and a reducer, with the reducer located at the output end of the drive motor and the drive screw connected to the output end of the reducer.

[0014] Optionally, the aforementioned fixed bracket includes a support portion and a base portion arranged vertically, the aforementioned drive screw is rotatably connected to the aforementioned support portion, and the aforementioned adjustment structure is provided through the aforementioned base portion.

[0015] Optionally, the adjustment structure includes an adjustment screw extending along the second direction or an adjustment pin extending along the second direction. The adjustment screw is threaded to the base portion, and the adjustment pin passes through the base portion. The projection of the tail end of the adjustment screw or the tail end of the adjustment pin onto the impact specimen body in the vertical direction corresponds to the bottom of the notch.

[0016] Optionally, the adjustment structure further includes a scale for indicating the depth of the notch.

[0017] Another objective of this invention is to provide a broaching machine for processing impact specimens, which includes a broach and an impact specimen notch processing positioning device as described in any of the above embodiments, wherein the broach is positioned directly opposite the notch portion of the impact specimen body.

[0018] Beneficial effects:

[0019] The impact specimen notch processing positioning device of this utility model consists of a fixed bracket, an adjusting structure, and two oppositely arranged fixed blocks. A drive screw is mounted on the fixed bracket, and the two fixed blocks are correspondingly positioned at both ends of the drive screw. Since the fixed blocks are threadedly connected to the drive screw, and the first and second threaded portions at both ends of the drive screw have opposite helical directions, the two fixed blocks can synchronously move closer or further apart as the drive screw rotates around its own axis. This clamps and fixes the impact specimen body to be processed. The midpoint between the lines connecting the two fixed blocks corresponds to the adjusting structure, and the projection of the end of the adjusting structure onto the impact specimen body corresponds to the depth position of the notch. This allows the adjusting structure to display the position and depth of the notch, improving positioning accuracy and facilitating subsequent processing. This impact specimen notch processing positioning device improves the accuracy of impact specimen notch positioning and allows for controllable processing depth, reducing the adjustment time required during processing. Attached Figure Description

[0020] Figure 1 This is an isometric view of the impact specimen notch processing and positioning device provided in a specific embodiment of this utility model.

[0021] In the picture:

[0022] 10. Impact specimen body; 11. Notch;

[0023] 100. Fixed bracket; 110. Support part; 120. Base part;

[0024] 200, drive screw; 210, first threaded section; 220, second threaded section;

[0025] 300. Fixing block; 310. Mounting part; 320. Positioning part; 321. Positioning groove;

[0026] 400. Adjust the structure. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0031] The first direction described in this embodiment is: Figure 1 The X direction shown is the length direction of the impact specimen body 10; the second direction is... Figure 1 The Y direction shown is the width direction of the impact specimen body 10. The first direction is perpendicular to the second direction, and both the first and second directions are perpendicular to the vertical direction.

[0032] like Figure 1As shown, the impact specimen notch processing positioning device includes a fixed bracket 100, an adjusting structure 400, and two opposing fixed blocks 300. A drive screw 200 passes through the fixed bracket 100 along a first direction. One end of the drive screw 200 along the first direction has a first threaded portion 210, and the other end has a second threaded portion 220. The helical directions of the first threaded portion 210 and the second threaded portion 220 are opposite. One of the two fixed blocks 300 is threadedly connected to the first threaded portion 210, and the other is threadedly connected to the first threaded portion 210. The second threaded portion 220, the drive screw 200 is rotatable around its own axis to bring the two fixing blocks 300 closer or further apart, and the impact specimen body 10 can be clamped between the two fixing blocks 300; the adjustment structure 400 is provided on the fixing bracket 100 and located at the midpoint of the line connecting the two fixing blocks 300, the position of the adjustment structure 400 along the second direction is adjustable, and the projection of the end of the adjustment structure 400 along the vertical direction on the impact specimen body 10 corresponds to the depth of the notch 11 of the impact specimen body 10.

[0033] The impact specimen notch processing positioning device in this embodiment consists of a fixed bracket 100, an adjusting structure 400, and two oppositely arranged fixed blocks 300. A drive screw 200 is provided on the fixed bracket 100, and the two fixed blocks 300 are respectively provided at both ends of the drive screw 200. Since the fixed blocks 300 are threadedly connected to the drive screw 200, and the first thread 210 and the second thread 220 at both ends of the drive screw 200 have opposite helical directions, the two fixed blocks 300 can synchronously move closer or further away from each other when the drive screw 200 rotates around its own axis, so that the two fixed blocks 300 clamp and fix the impact specimen body 10 to be processed. The midpoint between the lines connecting the two fixed blocks 300 corresponds to the adjusting structure 400. The projection of the end of the adjusting structure 400 on the impact specimen body 10 corresponds to the depth position of the notch 11, so that the adjusting structure 400 can display the position and depth of the notch 11, improving the positioning accuracy and facilitating subsequent processing. This impact specimen notch machining and positioning device can improve the accuracy of impact specimen notch positioning and make the machining depth controllable, reducing the adjustment time required during machining.

[0034] Furthermore, the aforementioned fixing block 300 includes a mounting portion 310 and a positioning portion 320. The mounting portion 310 is threadedly connected to either the first threaded portion 210 or the second threaded portion 220. The impact specimen body 10 can be clamped between the two positioning portions 320. The positioning portion 320 is disposed on the top wall of the mounting portion 310, and the impact specimen body 10 can abut against the top wall of the mounting portion 310. By dividing the fixing block 300 into the positioning portion 320 and the mounting portion 310 connected vertically, the positioning portion 320 can be used to clamp, fix, and position the impact specimen body 10, while the mounting portion 310 is threadedly connected to the drive screw 200 and can also support the impact specimen body 10, further improving the positioning accuracy.

[0035] In this embodiment, the positioning part 320 is provided with a positioning groove 321 at one end near the impact specimen body 10 along the first direction, and the inner wall of the positioning groove 321 can abut against the edge of the impact specimen body 10. By using the positioning groove 321 to abut against the edge of the impact specimen body 10 for fixing and positioning, the contact area between the positioning part 320 and the impact specimen body 10 can be reduced, thereby improving the positioning accuracy.

[0036] Furthermore, the dimensions of the positioning groove 321 along the second direction gradually decrease from the port of the positioning groove 321 to the bottom of the groove; the positioning groove 321 is V-shaped, arc-shaped, or trapezoidal. In this embodiment, the positioning groove 321 is V-shaped, allowing the sidewall of the positioning groove 321 to abut against the impact sample body 10 to be processed, enabling both sides of the positioning groove 321 to simultaneously perform positioning functions. This not only improves positioning accuracy but also enhances the fixing effect on the impact sample body 10, preventing shaking during processing and improving the processing quality of the notch 11.

[0037] Please continue to refer to this. Figure 1 Each end of the aforementioned drive screw 200 protrudes from any of the aforementioned fixing blocks 300, so that the drive screw 200 is connected to the output end of the drive component (not shown in the figure). Using the drive component to drive the drive screw 200 to rotate saves manpower, and the output force of the drive component is more stable, thus improving positioning accuracy.

[0038] Furthermore, the aforementioned driving component includes a drive motor and a reducer. The reducer is disposed at the output end of the drive motor, and the drive screw 200 is connected to the output end of the reducer. The reducer can reduce the error caused by the rotation of the drive motor, improve the positioning accuracy, increase the torque, improve the output capacity, and achieve better clamping and fixing effects. At the same time, it can also reduce vibration and impact during movement, and improve operational stability.

[0039] Optionally, the aforementioned fixed bracket 100 includes a support portion 110 and a base portion 120 arranged vertically. The drive screw 200 is rotatably connected to the support portion 110, and the adjustment structure 400 passes through the base portion 120. The arrangement of the support portion 110 and the base portion 120 can separate the installation space of the drive screw 200 and the adjustment structure 400, avoiding collision between the two and playing a role in mutual avoidance, thereby improving the stability of operation.

[0040] In this embodiment, the adjustment structure 400 includes an adjustment screw extending along the second direction or an adjustment pin extending along the second direction. The adjustment screw is threadedly connected to the base portion 120, and the adjustment pin passes through the base portion 120. The projection of the tail end of the adjustment screw or the tail end of the adjustment pin onto the impact specimen body 10 in the vertical direction corresponds to the bottom of the notch portion 11. In this embodiment, the adjustment structure 400 is an adjustment screw, which is directly threadedly connected to the base portion 120. By turning the head of the adjustment screw, the length of the tail end of the adjustment screw extending out of the base portion 120 can be changed, thereby changing the position of the projection of the tail end of the adjustment screw onto the impact specimen body 10, that is, the position corresponding to the bottom of the notch portion 11. Thus, the depth of the notch portion 11 can be changed by adjusting the position of the tail end of the adjustment screw.

[0041] Furthermore, the adjustment structure 400 also includes a scale, which is used to indicate the depth of the notch 11. The scale can directly indicate the depth of the notch 11 corresponding to the position of the tail of the adjusting screw, thereby directly reading the depth of the notch 11, which facilitates the operation of machining the notch 11 and improves machining efficiency.

[0042] This embodiment also provides a broaching machine for processing impact specimens. The broaching machine includes a broach and an impact specimen notch processing and positioning device as described in any of the above embodiments. The broach is positioned directly opposite the notch 11 of the impact specimen body 10. This impact specimen broaching machine has the beneficial effects of the impact specimen notch processing and positioning device described in any of the above embodiments, which will not be elaborated here. Specifically, this impact specimen broaching machine can improve the accuracy of impact specimen notch positioning and allows for controllable processing depth, reducing the adjustment time required during processing.

[0043] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. Impact specimen notch machining positioning device, characterized in that, Comprising: A fixed bracket (100), a driving lead screw (200) is arranged through the fixed bracket (100) along a first direction, a first thread portion (210) is arranged at one end of the driving lead screw (200) along the first direction, and a second thread portion (220) is arranged at the other end, and the spiral directions of the first thread portion (210) and the second thread portion (220) are opposite; Two oppositely arranged fixed blocks (300), one of the two fixed blocks (300) is threadedly connected to the first thread portion (210), and the other is threadedly connected to the second thread portion (220), the driving lead screw (200) can rotate around its own axis to make the two fixed blocks (300) approach or separate from each other, and an impact test sample body (10) can be clamped between the two fixed blocks (300); An adjusting structure (400), the adjusting structure (400) is arranged on the fixed bracket (100) and is located at the midpoint of the connection line of the two fixed blocks (300), the position of the adjusting structure (400) along a second direction is adjustable, and the projection of the end of the adjusting structure (400) on the impact test sample body (10) along the vertical direction corresponds to the depth of the notch portion (11) of the impact test sample body (10).

2. The impact specimen notch machining positioning device according to claim 1, wherein The fixed block (300) includes a mounting portion (310) and a positioning portion (320), the mounting portion (310) is threadedly connected to the first thread portion (210) or the second thread portion (220), and the impact test sample body (10) can be clamped between the two positioning portions (320); the positioning portion (320) is arranged on the top wall of the mounting portion (310), and the impact test sample body (10) can abut against the top wall of the mounting portion (310).

3. The impact specimen notch machining positioning device according to claim 2, wherein, A positioning groove (321) is arranged at one end of the positioning portion (320) close to the impact test sample body (10) along the first direction, and the inner wall of the positioning groove (321) can abut against the edge of the impact test sample body (10).

4. The impact specimen notch machining positioning device according to claim 3, characterized in that, The dimension of the positioning groove (321) along the second direction gradually decreases from the port of the positioning groove (321) to the bottom of the positioning groove (321); the positioning groove (321) is V-shaped, circular arc-shaped or trapezoidal.

5. The impact specimen notch machining positioning device according to claim 2, wherein Any end of the driving lead screw (200) protrudes from any one of the fixed blocks (300) so that the driving lead screw (200) is connected to the output end of a driving member.

6. The impact specimen notch machining positioning device according to claim 5, wherein The driving member includes a driving motor and a speed reducer, the speed reducer is arranged at the output end of the driving motor, and the driving lead screw (200) is connected to the output end of the speed reducer.

7. The impact specimen notch machining positioning device according to claim 1, wherein The fixed bracket (100) includes a support portion (110) and a base portion (120) arranged up and down, the driving lead screw (200) is rotatably connected to the support portion (110), and the base portion (120) is provided with the adjusting structure (400) passing through.

8. The impact specimen notch machining positioning device according to claim 7, wherein The adjusting structure (400) includes an adjusting screw extending along the second direction or an adjusting pin extending along the second direction. The adjusting screw is threadedly connected to the base portion (120), and the adjusting pin penetrates through the base portion (120); the projection of the tail end of the adjusting screw or the tail end of the adjusting pin on the impact test sample body (10) in the vertical direction corresponds to the bottom of the groove of the notch portion (11).

9. The impact specimen notch machining positioning device according to claim 8, characterized in that, The adjusting structure (400) further includes a scale for showing the depth of the notch portion (11).

10. Impact specimen processing broaching machine, characterized in that, It includes a broach and an impact test sample notch machining positioning device according to any one of claims 1-9, and the broach is arranged opposite to the notch portion (11) of the impact test sample body (10).

Images