Hardness detection device for numerical control cutter

Abstract

The invention discloses a hardness detection device for a numerical control cutter, and relates to the technical field of cutter hardness detection.The hardness detection device comprises a detection table, an adjusting mechanism is arranged in the middle of the detection table, a positioning mechanism is arranged at the top of the adjusting mechanism, the detection table comprises a lifting table, and one end of the lifting table is connected with a support; and one end of the bracket is connected with a hardness detection head. The longitudinal adjusting rail is arranged on the longitudinal adjusting plate, the longitudinal lead screw is installed in the longitudinal adjusting plate and connected to the first motor, the first motor drives the longitudinal lead screw to rotate, then the longitudinal adjusting block can be driven to move horizontally, and then the transverse adjusting plate and the test board are driven to achieve longitudinal movement adjustment. The second motor drives the transverse lead screw to rotate to drive the transverse adjusting block and the test board to achieve transverse movement adjustment, the multi-direction adjusting function is provided for the test board, the hardness of the cutter at different positions may be different, and multi-position detection can avoid one-sidedness results generated by single-position detection.

Description

Technical Field

[0001] The invention relates to the technical field of tool hardness detection, in particular to a hardness detection device for numerical control tools. Background Art

[0002] CNC machine tools often use different types of cutting tools to process workpieces. However, when making such cutting tools, it is usually necessary to use a Rockwell hardness tester to test the hardness of the cutting tools to avoid damage to the internal parts and workpieces of the CNC machine tools due to poor hardness of the cutting tools when they are used in the CNC machine tools.

[0003] In the prior art, for example, the patent application number CN202410152099.0, "A hardness detection device for a tool for a numerically controlled machine tool", includes a detection seat, a detection ring is rotatably installed on the upper end of the detection seat, a plurality of support columns are fixed on the upper end of the detection seat, a clamping seat is installed on the support column, a clearance groove is arranged inside the clamping seat, a clamping mechanism for fixing the machine tool tool is arranged on the clamping seat, and a rotating mechanism for changing the horizontal angle of the clamping mechanism is also arranged on the detection seat, a positioning cylinder is fixedly installed on one side of the upper end of the detection seat, a positioning column is slidably installed inside the positioning cylinder, a positioning plate is fixedly installed on the upper end of the positioning column, a positioning spring is sleeved on the outer side of the positioning column between the positioning plate and the positioning cylinder, and an impact mechanism is arranged on the positioning plate. The present invention meets the hardness detection needs of machine tool tools under different forces, further improves the detection accuracy, and at the same time changes the angle of the machine tool tool in the clamping state, meeting the hardness detection needs of different side wall positions.

[0004] The existing CNC tools cannot move quickly according to the position to be tested during hardness testing, and need to be moved manually. The accuracy of manual displacement is poor, and it is impossible to ensure accurate contact with the specified position, resulting in low detection quality. In addition, manual movement will lead to reduced operating efficiency. In view of the above problems, a hardness testing device for CNC tools is proposed. Summary of the invention

[0005] The object of the present invention is to provide a hardness detection device for CNC tools to solve the problem that the prior art proposed in the above-mentioned background technology cannot be quickly moved according to the position to be detected during operation, and manual movement operation is required. The accuracy of manual displacement is poor, and it is impossible to ensure accurate contact with the specified position, resulting in low detection quality, and manual movement leads to reduced operating efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hardness testing device for a numerically controlled tool, comprising a testing platform, an adjusting mechanism is arranged in the middle of the testing platform, a positioning mechanism is arranged on the top of the adjusting mechanism, the testing platform comprises a lifting platform, one end of the lifting platform is connected to a bracket, one end of the bracket is connected to a hardness testing head, the lifting platform facilitates the provision of installation support, and facilitates the provision of lifting and lowering adjustment support for the longitudinal adjustment plate, the bracket provides erection support, and cooperates with the hardness testing head to contact the tool surface that needs to be tested for hardness, thereby facilitating the provision of effective hardness testing; The adjustment mechanism includes a longitudinal adjustment plate, a longitudinal adjustment rail is provided in the middle of the surface of the longitudinal adjustment plate, a longitudinal screw is arranged on the inner side of the longitudinal adjustment rail, a first motor is arranged at one end of the longitudinal screw, a longitudinal adjustment block is threadedly connected to the outer wall of the longitudinal screw, a transverse adjustment plate is provided on the top of the longitudinal adjustment block, a transverse adjustment rail is provided in the middle of the surface of the transverse adjustment plate, a transverse screw is arranged on the inner side of the transverse adjustment rail, a second motor is arranged at one end of the transverse screw, a transverse adjustment block is threadedly connected to the outer wall of the transverse screw, and a test bench is provided on the top of the transverse adjustment block. The longitudinal adjustment rail is provided on the longitudinal adjustment plate, and a longitudinal screw is installed inside and connected to the first motor, and then the longitudinal screw is driven to rotate by the first motor, and then the longitudinal adjustment block can be driven to translate, and then the transverse adjustment plate and the test bench are driven to realize longitudinal adjustment, and the transverse screw is driven to rotate by the second motor, and then the transverse adjustment block and the test bench are driven to realize transverse adjustment, which is beneficial to provide a multi-directional adjustment function for the test bench. The hardness of different positions of the tool may be different, and multi-position detection can avoid the one-sided results caused by single position detection. By testing the hardness of each key part of the tool, we can have a more comprehensive understanding of the overall hardness performance of the tool and provide more accurate data support for the quality assessment of the tool. The vertical and horizontal movement adjustment can cover different areas of the tool, such as the edge, cutting edge, and handle, which helps to find possible local hardness unevenness or abnormalities. For example, the hardness of the cutting edge may change due to the processing technology or wear during use. Multi-position detection can capture these problems in time and provide a basis for the improvement and maintenance of the tool. The results of multi-position detection can be fed back to the design and manufacturing process of the tool. If it is found that the hardness of certain positions does not meet the requirements during the test, the manufacturing process can be adjusted, such as optimizing heat treatment parameters, improving material selection, etc., to improve the overall quality and performance of the tool. The vertical and horizontal movement adjustment can be combined with automated testing equipment to achieve fast and accurate multi-position detection. Automated testing can not only improve detection efficiency and reduce manual operation errors, but also meet the needs of large-scale production.

[0007] Preferably, the positioning mechanism includes two mounting plates, both ends of the two mounting plates are provided with pneumatic telescopic rods, the output end of the pneumatic telescopic rod is connected with a connecting frame, the mounting plate can provide the function of connection and installation, and facilitate the stable installation of the pneumatic telescopic rod, the pneumatic telescopic rod is connected to the connecting frame, which is conducive to driving the connecting frame to realize the opposite adjustment and merging, and further driving the limit block to realize the function of clamping and positioning, and the positioning mechanism can accurately fix the CNC tool at a specific detection position to prevent the tool from moving or shaking during the detection process. This enables the hardness testing equipment to accurately measure the specific parts of the tool to ensure the accuracy and reliability of the test results. The positioning mechanism can quickly place the tool to the detection position, reducing the time and workload of manually adjusting the tool position. The positioning mechanism can be adjusted and adapted according to different types of CNC tools, and has strong versatility. When detecting different tools, the positioning mechanism can quickly replace the clamping device or adjust the positioning parameters, and conveniently and quickly adapt to the detection requirements of different tools. This makes the detection process more flexible and efficient, and can meet diversified production needs.

[0008] Preferably, two longitudinal grooves are symmetrically provided on the surface of the longitudinal adjustment plate, and longitudinal sliders are symmetrically installed on the bottom of the transverse adjustment plate. The longitudinal sliders are slidably connected to the inner sides of the longitudinal grooves. By sliding the longitudinal sliders on the inner sides of the longitudinal grooves and connecting them to the bottom of the transverse adjustment plate, stability can be achieved during the movement and adjustment process, and at the same time, the accuracy can be improved smoothly and effectively during the extrusion detection process.

[0009] Preferably, the top of the connecting frame is fixedly connected to a limiting block, and a plurality of anti-slip strips are evenly distributed on one side of the limiting block. A stable positioning effect is achieved by cooperating with the limiting block in the opposite adjustment clamping of the connecting frame. The anti-slip strips provide an anti-slip effect, ensuring stable positioning and preventing slipping.

[0010] Preferably, guide rail grooves are provided on both sides of the test bench, and both ends of the connecting frame are movably connected to the inner sides of the guide rail grooves. The guide rail grooves can provide guidance during the movement of the connecting frame, thereby ensuring precise and smooth movement.

[0011] Preferably, the top of the lifting platform is connected to an electric lifting column, the bottom of the longitudinal adjustment plate is connected to the top of the electric lifting column, and the longitudinal adjustment plate is arranged above the lifting platform. The electric lifting column facilitates the control of the longitudinal adjustment plate to achieve lifting and lowering adjustment, thereby driving the test bench where the tool is placed to achieve the lifting and lowering adjustment effect.

[0012] Preferably, a bottom support seat is provided at the bottom of the lifting platform, and the bottom end of the bracket is connected to the top of the bottom support seat, so that the bottom support seat can provide a bottom support function, thereby ensuring the overall stability.

[0013] Preferably, a display screen is fixedly mounted on one end of the bracket, and anti-skid pads are provided at the four bottom corners of the bottom support seat. The display screen can provide a display function, which is convenient for checking the working status, and the anti-skid pads provide anti-skid support for the position of the bottom support seat.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, a longitudinal adjustment rail is provided on the longitudinal adjustment plate, and a longitudinal screw is installed inside and connected to the first motor, and then the longitudinal screw is driven to rotate by the first motor, which can drive the longitudinal adjustment block to translate, and then drive the transverse adjustment plate and the test bench to realize longitudinal adjustment, and the transverse screw is driven to rotate by the second motor, which drives the transverse adjustment block and the test bench to realize transverse adjustment, thereby providing a multi-directional adjustment function for the test bench. The hardness of different positions of the tool may be different. Multi-position detection can avoid the one-sided results caused by single-position detection. By performing hardness tests on various key parts of the tool, the overall hardness performance of the tool can be more comprehensively understood, providing more accurate data support for the quality evaluation of the tool. The longitudinal and transverse movement adjustment can cover the tool. Different areas such as the edge, cutting edge, and tool handle can help to detect possible local hardness unevenness or abnormalities. For example, the hardness of the cutting edge may change due to wear during processing or use. Multi-position detection can capture these problems in a timely manner and provide a basis for tool improvement and maintenance. The results of multi-position detection can be fed back to the design and manufacturing process of the tool. If the hardness of certain positions is found to be unsatisfactory during detection, the manufacturing process can be adjusted, such as optimizing heat treatment parameters, improving material selection, etc., to improve the overall quality and performance of the tool. Vertical and lateral movement adjustment can be combined with automated testing equipment to achieve fast and accurate multi-position detection. Automated detection can not only improve detection efficiency and reduce manual operation errors, but also meet the needs of large-scale production.

[0015] 2. In the present invention, the mounting plate can provide a connection and installation function, which facilitates the stable installation of the pneumatic telescopic rod. The pneumatic telescopic rod is connected to the connecting frame, which is conducive to driving the connecting frame to achieve opposite adjustment and merging, and further drives the limit block to achieve the function of clamping and positioning. The positioning mechanism can accurately fix the CNC tool at a specific detection position to prevent the tool from moving or shaking during the detection process, which enables the hardness testing equipment to accurately measure the specific part of the tool to ensure the accuracy and reliability of the test results. The positioning mechanism can quickly place the tool at the detection position, reducing the time and workload of manually adjusting the tool position. The positioning mechanism can be adjusted and adapted according to different types of CNC tools, and has strong versatility. When detecting different tools, the positioning mechanism can quickly replace the clamping device or adjust the positioning parameters to quickly and conveniently adapt to the detection requirements of different tools. This makes the detection process more flexible and efficient and can meet diverse production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a hardness detection device for a numerical control tool according to the present invention; Figure 2 It is a schematic structural diagram of another angle of a hardness detection device for a numerical control tool of the present invention; Figure 3 It is a partial structural schematic diagram of a hardness detection device for a numerical control tool of the present invention; Figure 4 It is a schematic diagram of a partially exploded structure of a hardness detection device for a numerically controlled tool of the present invention; Figure 5 For the present invention Figure 4 A is an enlarged structural diagram; Figure 6 This is a schematic diagram of the structure of a partially exploded hardness detection device for CNC tools of the present invention from another angle.

[0017] In the figure: 1. Test bench; 101. Lifting platform; 102. Electric lifting column; 103. Bottom support seat; 104. Bracket; 105. Hardness test head; 106. Display screen; 107. Anti-skid pad; 2. Adjustment mechanism; 201. Longitudinal adjustment plate; 202. Longitudinal adjustment rail; 203. Longitudinal screw rod; 204. First motor; 205. Longitudinal slide; 206. Longitudinal adjustment block; 207. Longitudinal slider; 208. Transverse adjustment plate; 209. Transverse adjustment rail; 210. Transverse screw rod; 211. Second motor; 212. Transverse adjustment block; 213. Test bench; 3. Positioning mechanism; 301. Mounting plate; 302. Pneumatic telescopic rod; 303. Connecting frame; 304. Limit block; 305. Anti-skid strip; 306. Guide rail groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example 1: Reference Figure 1-Figure 6 As shown: a hardness testing device for a numerically controlled tool, comprising a testing platform 1, an adjusting mechanism 2 is arranged in the middle of the testing platform 1, a positioning mechanism 3 is arranged on the top of the adjusting mechanism 2, the testing platform 1 comprises a lifting platform 101, one end of the lifting platform 101 is connected to a bracket 104, one end of the bracket 104 is connected to a hardness testing head 105, the lifting platform 101 facilitates the provision of installation support, and facilitates the provision of lifting and lowering adjustment support for the longitudinal adjustment plate 201, the bracket 104 provides erection support, and cooperates with the hardness testing head 105 to contact the tool surface that needs to be tested for hardness, thereby facilitating the provision of effective hardness testing; The adjustment mechanism 2 includes a longitudinal adjustment plate 201, a longitudinal adjustment rail 202 is provided in the middle of the surface of the longitudinal adjustment plate 201, a longitudinal screw rod 203 is provided on the inner side of the longitudinal adjustment rail 202, a first motor 204 is provided at one end of the longitudinal screw rod 203, a longitudinal adjustment block 206 is threadedly connected to the outer wall of the longitudinal screw rod 203, a transverse adjustment plate 208 is provided on the top of the longitudinal adjustment block 206, a transverse adjustment rail 209 is provided in the middle of the surface of the transverse adjustment plate 208, a transverse screw rod 210 is provided on the inner side of the transverse adjustment rail 209, a second motor 211 is provided at one end of the transverse screw rod 210, a transverse adjustment block 212 is threadedly connected to the outer wall of the transverse screw rod 210, and a transverse adjustment block 212 is provided on the top of the transverse adjustment block 212. There is a test bench 213, a longitudinal adjustment rail 202 is provided on the longitudinal adjustment plate 201, and a longitudinal screw rod 203 is installed inside and connected to the first motor 204, and then the longitudinal screw rod 203 is driven to rotate by the first motor 204, and then the longitudinal adjustment block 206 can be driven to translate, and then the transverse adjustment plate 208 and the test bench 213 are driven to realize longitudinal adjustment, and the transverse screw rod 210 is driven to rotate by the second motor 211, and then the transverse adjustment block 212 and the test bench 213 are driven to realize transverse adjustment, so as to provide a multi-directional adjustment function for the test bench 213. The hardness of different positions of the tool may be different, and multi-position detection can avoid the one-sided results caused by single position detection. By performing hardness tests on various key parts of the tool, the overall hardness performance of the tool can be more comprehensively understood, and more accurate data support can be provided for the quality assessment of the tool. The longitudinal and transverse movement adjustment can cover different areas such as the edge, cutting edge, and handle of the tool, which is helpful to find possible local hardness unevenness or abnormal conditions. For example, the hardness of the cutting edge may change due to the processing technology or wear during use. Multi-position detection can capture these problems in time and provide a basis for the improvement and maintenance of the tool. The results of multi-position detection can be fed back to the design and manufacturing process of the tool. If the hardness of certain positions is found to be unsatisfactory during the test, the manufacturing process can be adjusted, such as optimizing heat treatment parameters, improving material selection, etc., to improve the overall quality and performance of the tool. The vertical and horizontal movement adjustment can be combined with automated testing equipment to achieve fast and accurate multi-position detection. Automated testing can not only improve detection efficiency and reduce manual operation errors, but also meet the needs of large-scale production.

[0020] like Figure 4-Figure 6As shown, the positioning mechanism 3 includes two mounting plates 301, and both ends of the two mounting plates 301 are provided with pneumatic telescopic rods 302. The output end of the pneumatic telescopic rod 302 is connected with a connecting frame 303. The mounting plate 301 can provide the function of connection and installation, which is convenient for providing stable installation of the pneumatic telescopic rod 302. The pneumatic telescopic rod 302 is connected to the connecting frame 303, which is conducive to driving the connecting frame 303 to achieve opposite adjustment and merging, and further driving the limit block 304 to achieve the function of clamping and positioning. The positioning mechanism can accurately fix the CNC tool at a specific detection position to prevent the tool from moving or shaking during the detection process. This enables the hardness testing equipment to accurately measure specific parts of the tool and ensure the accuracy and reliability of the test results. The positioning mechanism can quickly place the tool at the detection position, reducing the time and workload of manually adjusting the tool position. The positioning mechanism can be adjusted and adapted according to different types of CNC tools, and has strong versatility. When detecting different tools, the positioning mechanism can quickly replace the clamping device or adjust the positioning parameters, and conveniently and quickly adapt to the detection requirements of different tools. This makes the inspection process more flexible and efficient, and can meet diverse production needs.

[0021] like Figure 6 As shown, two longitudinal grooves 205 are symmetrically provided on the surface of the longitudinal adjustment plate 201, and longitudinal sliders 207 are symmetrically installed on the bottom of the transverse adjustment plate 208. The longitudinal sliders 207 are slidably connected to the inner sides of the longitudinal grooves 205. The longitudinal sliders 207 are slidably installed on the inner sides of the longitudinal grooves 205 and connected to the bottom of the transverse adjustment plate 208, so that stability can be achieved during the movement and adjustment process, and at the same time, the accuracy can be improved steadily and effectively during the extrusion detection process.

[0022] like Figure 5 As shown, the top of the connecting frame 303 is fixedly connected to a limiting block 304, and a plurality of anti-slip strips 305 are evenly distributed on one side of the limiting block 304. A stable positioning effect is achieved by the limiting block 304 cooperating with the connecting frame 303 to adjust and clamp in opposite directions. The anti-slip strips 305 provide an anti-slip effect, ensuring stable positioning and preventing slipping.

[0023] like Figure 5 As shown, guide grooves 306 are provided on both sides of the test bench 213, and both ends of the connecting frame 303 are movably connected to the inner side of the guide grooves 306. The guide grooves 306 can provide guidance during the movement of the connecting frame 303, thereby ensuring accurate and smooth movement.

[0024] like Figure 1 and Figure 2As shown, the top of the lifting platform 101 is connected to an electric lifting column 102, the bottom of the longitudinal adjustment plate 201 is connected to the top of the electric lifting column 102, and the longitudinal adjustment plate 201 is arranged above the lifting platform 101. The electric lifting column 102 facilitates the control of the longitudinal adjustment plate 201 to achieve lifting and lowering adjustment, thereby driving the test table 213 where the tool is placed to achieve the lifting and lowering adjustment effect.

[0025] like Figure 1 and Figure 2 As shown, a bottom support seat 103 is provided at the bottom of the lifting platform 101, and the bottom end of the bracket 104 is connected to the top of the bottom support seat 103. The bottom support seat 103 can provide a bottom support function, thereby ensuring the overall stability.

[0026] like Figure 1 and Figure 2 As shown, a display screen 106 is fixedly mounted at one end of the bracket 104, and anti-skid pads 107 are provided at the four bottom corners of the bottom support seat 103. The display screen 106 can provide a display function to facilitate checking the working status, and the anti-skid pads 107 provide an anti-skid support effect for the position of the bottom support seat 103.

[0027] In the present invention, when the hardness testing device for CNC tools is in use, firstly, the lifting platform 101 facilitates the provision of installation support, and facilitates the function of providing lifting and adjusting support for the longitudinal adjustment plate 201. The electric lifting column 102 facilitates the control of the longitudinal adjustment plate 201 to achieve lifting and adjusting, thereby driving the test bench 213 on which the tool is placed to achieve the lifting and adjusting effect. The bracket 104 provides the erection support, and cooperates with the hardness testing head 105 to contact the tool surface that needs to be tested for hardness, thereby facilitating the provision of an effective hardness testing function. The longitudinal adjustment plate 201 is provided with a longitudinal adjustment rail 202, and a longitudinal screw rod 203 is installed inside and connected to the first motor 204, and then the longitudinal screw rod 203 is driven to rotate by the first motor 204, thereby driving the longitudinal adjustment block 206 to translate, and then driving the transverse adjustment plate 208 and the test bench 213 to achieve longitudinal adjustment, and the transverse screw rod 210 is driven to rotate by the second motor 211, thereby driving the transverse adjustment block 212 and the test bench 213 to achieve transverse adjustment, thereby facilitating the test bench 2 13 provides a multi-directional adjustment function. The longitudinal slider 207 is slidably installed on the inner side of the longitudinal slide groove 205 and connected to the bottom of the transverse adjustment plate 208, so that stability can be achieved during the movement and adjustment process. At the same time, the accuracy is ensured to be improved steadily and effectively during the extrusion detection process. The mounting plate 301 can provide a connection and installation function, which is convenient for providing a stable installation of the pneumatic telescopic rod 302. The pneumatic telescopic rod 302 is connected to the connecting frame 303, which is conducive to driving the connecting frame 303 to achieve the opposite adjustment and merging, and further drives the limit block 304 to achieve the function of clamping and positioning. The positioning mechanism can accurately fix the CNC tool at a specific detection position to prevent the tool from moving or shaking during the detection process. The limit block 304 cooperates with the opposite adjustment clamping of the connecting frame 303 to achieve a stable positioning effect. The anti-slip strip 305 provides an anti-slip effect, ensures stable positioning and prevents slipping. The guide rail groove 306 can provide a guiding function during the movement of the connecting frame 303, thereby ensuring an accurate and stable movement effect.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hardness testing device for a numerically controlled tool, comprising a testing platform (1), characterized in that: An adjustment mechanism (2) is provided in the middle of the detection platform (1), a positioning mechanism (3) is provided on the top of the adjustment mechanism (2), the detection platform (1) comprises a lifting platform (101), one end of the lifting platform (101) is connected to a bracket (104), and one end of the bracket (104) is connected to a hardness detection head (105); The adjustment mechanism (2) comprises a longitudinal adjustment plate (201), a longitudinal adjustment rail (202) is provided in the middle of the surface of the longitudinal adjustment plate (201), a longitudinal screw rod (203) is arranged on the inner side of the longitudinal adjustment rail (202), a first motor (204) is arranged at one end of the longitudinal screw rod (203), a longitudinal adjustment block (206) is threadedly connected to the outer wall of the longitudinal screw rod (203), a transverse adjustment plate (208) is arranged on the top of the longitudinal adjustment block (206), a transverse adjustment rail (209) is provided in the middle of the surface of the transverse adjustment plate (208), a transverse screw rod (210) is arranged on the inner side of the transverse adjustment rail (209), a second motor (211) is arranged at one end of the transverse screw rod (210), a transverse adjustment block (212) is threadedly connected to the outer wall of the transverse screw rod (210), and a test bench (213) is arranged on the top of the transverse adjustment block (212).

2. The hardness detection device for CNC tool according to claim 1, characterized in that: The positioning mechanism (3) comprises two mounting plates (301), both ends of the two mounting plates (301) are provided with pneumatic telescopic rods (302), and the output ends of the pneumatic telescopic rods (302) are connected to connecting frames (303).

3. The hardness testing device for CNC tool according to claim 1, characterized in that: Two longitudinal slide grooves (205) are symmetrically provided on the surface of the longitudinal adjustment plate (201), and longitudinal sliders (207) are symmetrically installed on the bottom of the transverse adjustment plate (208), wherein the longitudinal sliders (207) are slidably connected to the inner sides of the longitudinal slide grooves (205).

4. The hardness testing device for CNC tools according to claim 2, characterized in that: The top of the connection frame (303) is fixedly connected to a limiting block (304), and a plurality of anti-slip strips (305) are evenly distributed on one side of the limiting block (304).

5. The hardness testing device for CNC tool according to claim 2, characterized in that: Guide rail grooves (306) are provided on both sides of the test bench (213), and both ends of the connecting frame (303) are movably connected to the inner sides of the guide rail grooves (306).

6. The hardness testing device for CNC tool according to claim 1, characterized in that: The top of the lifting platform (101) is connected to an electric lifting column (102), the bottom of the longitudinal adjustment plate (201) is connected to the top of the electric lifting column (102), and the longitudinal adjustment plate (201) is arranged above the lifting platform (101).

7. The hardness testing device for CNC tool according to claim 1, characterized in that: A bottom support seat (103) is provided at the bottom of the lifting platform (101), and the bottom end of the bracket (104) is connected to the top of the bottom support seat (103).

8. The hardness testing device for CNC tool according to claim 7, characterized in that: A display screen (106) is fixedly mounted on one end of the bracket (104), and anti-slip pads (107) are arranged at the four bottom corners of the bottom support seat (103).

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