A long knife cylindricity measurement structure

Abstract

The utility model relates to tool detection technical field, concretely is a long sword cylindricity measurement structure, a long sword cylindricity measurement structure, include: base, wherein, the base includes bottom plate and wallboard, the wallboard perpendicularly sets up at the top one side of bottom plate, positioning assembly, the positioning assembly includes first clamping plate, second clamping plate, and the third clamping plate of displacement along the direction of approaching or away from first clamping plate. The utility model has the beneficial effect that: through the vertical insertion of one end of the tool into the containing groove of the shaft sleeve, and the tangential structure of the first, second, third and fourth notches is used to cut the outer surface of the tool, ensuring accurate positioning and keeping straight perpendicular to the ground. In addition, since the first, second, and fourth notches are located on the same vertical line, combined with the third clamping plate and the fixing effect of the limiting assembly, multi-point stable clamping of the tool during rotation is achieved.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool testing technology, specifically a structure for measuring the cylindricity of a long cutting tool. Background Technology

[0002] In the field of machining, cutting tools are core components of machine tools, and their cylindricity directly affects machining accuracy and efficiency. Current methods for measuring cutting tool cylindricity typically involve placing the tool horizontally, using a rotating roller to contact the tool's outer surface, and relying on friction to drive the tool's rotation for measurement.

[0003] However, when liquids such as coolant, cutting fluid, or lubricating oil adhere to the tool surface, the friction between the roller and the tool decreases, easily leading to slippage. This causes the tool to be unable to rotate stably, rendering the measurement process ineffective. Secondly, for longer tools, when placed horizontally, the longer end of the tool is prone to jumping during rotation due to gravity and uneven force, causing the axis to deviate, reducing measurement accuracy, and resulting in large measurement errors. This limits the adaptability of existing cylindricity measuring devices to different types of tools, especially in high-precision machining scenarios, making it difficult to meet the requirements for measurement stability and accuracy. Utility Model Content

[0004] This invention addresses the technical problems existing in the prior art by providing a long knife cylindricity measurement structure to solve the problem of difficulty in meeting the requirements for measurement stability and accuracy.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A long knife cylindricity measuring structure, comprising:

[0006] A base, wherein the base includes a base plate and a wall plate, the wall plate being vertically disposed on one side of the top of the base plate;

[0007] A positioning assembly includes a first clamping plate, a second clamping plate, and a third clamping plate that moves towards or away from the first clamping plate. The first clamping plate and the second clamping plate are parallel vertically and respectively disposed on one side of the wall panel. The third clamping plate is located on the opposite side of the first clamping plate and the second clamping plate. A first V-shaped latch is provided on one side of the first clamping plate, a second V-shaped latch is provided on one side of the second clamping plate, and a third V-shaped latch is provided on the side of the third clamping plate facing the first clamping plate.

[0008] A rotary drive component, which is located below the positioning assembly and is mounted on the base plate;

[0009] A bushing is provided on the rotating end of the rotary drive component, and a receiving groove is provided in the center inside the bushing. A fourth V-shaped latch is provided on one side wall of the receiving groove, and the fourth latch, the first latch, and the second latch are all on a straight line perpendicular to the ground.

[0010] A limiting component is provided on the bushing to limit one end of the tool within the bushing receiving groove.

[0011] The beneficial effects of this utility model are:

[0012] 1) By vertically inserting one end of the tool into the receiving groove of the bushing, and utilizing the V-shaped structure of the first, second, third, and fourth bayonets tangent to the outer surface of the tool, the tool is accurately positioned and kept straight and perpendicular to the ground. In addition, since the first, second, and fourth bayonets are all located on the same straight line perpendicular to the ground, combined with the fixing effect of the third clamping plate that can move along the direction of the first clamping plate and the limiting component, multi-point stable clamping of the tool is achieved during rotation. Even for long tools, it can effectively avoid the phenomenon of one end jumping, thus improving the stability and accuracy of measurement.

[0013] Based on the above technical solution, the present invention can be further improved as follows.

[0014] Furthermore, the positioning assembly also includes a first guide post, a second guide post, a slider, a spring, and a baffle. One end of the first guide post and the second guide post are respectively fixed to one side of the wall panel. The slider slides outside the first guide post and the second guide post. The baffle is fixed to the other end of the first guide post. The spring is sleeved outside the first guide post and located between the baffle and the slider.

[0015] Furthermore, one side of the slider extends to one side of the third clamping plate and forms a T-shape, and the third clamping plate is fixed to the extended end of one side of the slider.

[0016] The beneficial effect of adopting the above-mentioned further solution is that, by sliding the slider on the first guide post and the second guide post, the third clamping plate can be displaced along the path of the guide post. At the same time, since the spring is sleeved on the first guide post and located between the baffle and the slider, as the slider is dragged to move the third clamping plate away from the first clamping plate and compress the spring, and then the slider is released, the preload provided by the spring is used to make the third clamping plate always maintain a holding force towards the first clamping plate, thereby ensuring that the third jaw on the third clamping plate is continuously and stably pressed against the outer surface of the tool.

[0017] Furthermore, the rotary drive component includes a support plate, a first pulley, a second pulley, a transmission belt, a drive motor, a main shaft, a central turntable, and a lever. The support plate is mounted on the base plate. The first pulley and the second pulley are rotatably connected to the support plate via rotating shafts. The transmission belt is sleeved on the outside of the first pulley and the second pulley. The drive motor is mounted on the support plate, and the drive end of the drive motor is coaxially fixed to the top of the second pulley.

[0018] Furthermore, one end of the main shaft is coaxially fixed to the top of the first pulley, and the central turntable is coaxially fixed to the other end of the main shaft.

[0019] Furthermore, the bushing is rotatably connected to the top of the turntable via a rotating shaft, and the lever is fixed to the top of the turntable.

[0020] Furthermore, the limiting component includes a fastening bolt, one end of which is screwed onto the outside of the bushing and extends into the receiving groove, and the other end of the fastening bolt abuts against the outside of the lever.

[0021] The beneficial effect of adopting the above-mentioned further solution is that by tightening the fastening bolt, one end of it is inserted into the receiving groove and the tool is firmly pressed against the fourth bayonet, so that the tool is reliably limited in the receiving groove. The drive motor drives the second pulley to rotate, and transmits the power to the first pulley through the transmission belt, thereby driving the spindle and the central turntable to rotate synchronously. Since the lever fixed on the top of the central turntable forms an abutment relationship with the fastening bolt, the lever ingeniously indirectly drives the bushing and the tool to rotate around the bushing as the rotation axis. Compared with the method of the drive motor directly driving the spindle and bushing, this device can effectively avoid the shaft alignment tolerance caused by direct drive through the lever indirect drive structure, effectively eliminate the deviation in the tool rotation process, and thus improve the accuracy of tool cylindricity detection.

[0022] Furthermore, the included angles of the V-shapes formed by the first, second, third, and fourth bayonets are the same.

[0023] The advantage of adopting the above-mentioned further solution is that it ensures the tangential consistency of the cutting tool at each jaw. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0026] Figure 3 This is a schematic diagram of the overall structure of the present invention, showing the cutting tool placed in the receiving groove;

[0027] Figure 4This is a side sectional view of the present invention;

[0028] Figure 5 This is a three-dimensional structural diagram of the bushing of this utility model.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 10. Base; 101. Base plate; 102. Wall panel; 20. Positioning component; 201. First clamping plate; 202. Second clamping plate; 203. Third clamping plate; 204. First bayonet; 205. Second bayonet; 206. Third bayonet; 207. First guide post; 208. Second guide post; 209. Slider; 210. Spring; 211. Baffle; 30. Rotary drive component; 301. Bearing plate; 302. First pulley; 303. Second pulley; 304. Transmission belt; 305. Drive motor; 306. Main shaft; 307. Turntable; 308. Lever; 40. Bushing; 401. Receiving groove; 402. Fourth bayonet; 50. Limiting component. Detailed Implementation

[0031] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0032] In the field of machining, cutting tools are core components of machine tools, and their cylindricity directly affects machining accuracy and efficiency. Current methods for measuring cutting tool cylindricity typically involve placing the tool horizontally, using a rotating roller to contact the tool's outer surface, and relying on friction to drive the tool's rotation for measurement.

[0033] However, when liquids such as coolant, cutting fluid, or lubricating oil adhere to the surface of the tool, the friction between the roller and the tool decreases, easily leading to slippage. This causes the tool to be unable to rotate stably, resulting in measurement failure. Secondly, for long tools, when placed horizontally, the longer end of the tool is prone to jumping during rotation due to gravity and uneven force, causing the axis to deviate, reducing measurement accuracy, and resulting in large measurement errors. This limits the adaptability of existing cylindricity measuring devices to different types of tools, especially in high-precision machining scenarios, making it difficult to meet the requirements for measurement stability and accuracy. To address these issues, the inventor has proposed a long tool cylindricity measuring structure.

[0034] The present invention provides the following preferred embodiments.

[0035] like Figures 1-5 As shown, a long knife cylindricity measurement structure includes:

[0036] The base 10 includes a base plate 101 and a wall plate 102, with the wall plate 102 vertically disposed on one side of the top of the base plate 101.

[0037] The positioning component 20 includes a first clamping plate 201, a second clamping plate 202, and a third clamping plate 203 that moves towards or away from the first clamping plate 201. The first clamping plate 201 and the second clamping plate 202 are parallel vertically and are respectively disposed on one side of the wall panel 102. The third clamping plate 203 is located on the opposite side of the first clamping plate 201 and the second clamping plate 202. A first V-shaped latch 204 is provided on one side of the first clamping plate 201, a second V-shaped latch 205 is provided on one side of the second clamping plate 202, and a third V-shaped latch 206 is provided on the side of the third clamping plate 203 facing the first clamping plate 201.

[0038] Rotary drive component 30 is located below positioning component 20 and is mounted on base plate 101;

[0039] The bushing 40 is disposed on the rotating end of the rotary drive 30, and a receiving groove 401 is provided in the center inside the bushing 40. A fourth bayonet 402 in the shape of a V is provided on one side wall of the receiving groove 401. The fourth bayonet 402, the first bayonet 204, and the second bayonet 205 are all on a straight line perpendicular to the ground.

[0040] A limiting component 50 is provided on the bushing 40 and is used to limit one end of the tool in the receiving groove 401 of the bushing 40.

[0041] By vertically inserting one end of the tool into the receiving groove 401 of the bushing 40, and utilizing the V-shaped structure of the first bayonet 204, the second bayonet 205, the third bayonet 206, and the fourth bayonet 402 tangent to the outer surface of the tool, the tool is accurately positioned and kept straight and perpendicular to the ground. In addition, since the first bayonet 204, the second bayonet 205, and the fourth bayonet 402 are all located on the same straight line perpendicular to the ground, combined with the fixing effect of the third clamping plate 203 which can be displaced along the direction of the first clamping plate 201 and the limiting component 50, multi-point stable clamping of the tool is achieved during rotation. Even for long tools, the phenomenon of one end jumping can be effectively avoided, improving the stability and accuracy of measurement.

[0042] In this embodiment, as Figures 1-5As shown, the positioning assembly 20 also includes a first guide post 207, a second guide post 208, a slider 209, a spring 210, and a baffle 211. One end of the first guide post 207 and the second guide post 208 are respectively fixed to one side of the wall panel 102. The slider 209 slides outside the first guide post 207 and the second guide post 208. The baffle 211 is fixed to the other end of the first guide post 207. The spring 210 is sleeved outside the first guide post 207 and located between the baffle 211 and the slider 209. One side of the slider 209 extends to one side of the third clamping plate 203 and is in a T-shape. The third clamping plate 203 is fixed to the extended end of one side of the slider 209.

[0043] By sliding the slider 209 on the first guide post 207 and the second guide post 208, the third clamping plate 203 can be displaced along the path of the guide post. At the same time, since the spring 210 is sleeved on the first guide post 207 and located between the baffle 211 and the slider 209, as the slider 209 is dragged to move the third clamping plate 203 away from the first clamping plate 201 and compress the spring 210, and then the slider 209 is released, the preload provided by the spring 210 ensures that the third clamping plate 203 always has a holding force facing the first clamping plate 201, thereby ensuring that the third latch 206 on the third clamping plate 203 is continuously and stably pressed against the outer surface of the tool.

[0044] In this embodiment, as Figures 1-5 As shown, the rotary drive component 30 includes a support plate 301, a first pulley 302, a second pulley 303, a transmission belt 304, a drive motor 305, a main shaft 306, a central turntable 307, and a lever 308. The support plate 301 is mounted on the base plate 101. The first pulley 302 and the second pulley 303 are rotatably connected to the support plate 301 via rotating shafts. The transmission belt 304 is sleeved on the outside of the first pulley 302 and the second pulley 303. The drive motor 305 is mounted on the support plate 301. The drive end of the drive motor 305 is coaxially fixed to the top of the second pulley 303, one end of the main shaft 306 is coaxially fixed to the top of the first pulley 302, the turntable 307 is coaxially fixed to the other end of the main shaft 306, the bushing 40 is rotatably connected to the top of the turntable 307 through the rotating shaft, the lever 308 is fixed to the top of the turntable 307, and the limiting assembly 50 includes a fastening bolt. One end of the fastening bolt is screwed onto the outside of the bushing 40 and passes through the receiving groove 401, and the other end of the fastening bolt abuts against the outside of the lever 308.

[0045] By tightening the fastening bolt, one end of it is inserted into the receiving groove 401 and the tool is firmly pressed against the fourth bayonet 402, thus achieving reliable positioning of the tool within the receiving groove 401. The drive motor 305 drives the second pulley 303 to rotate, and transmits power to the first pulley 302 via the transmission belt 304, thereby driving the spindle 306 and the central turntable 307 to rotate synchronously. Since the lever 308 fixed on the top of the central turntable 307 forms an abutment relationship with the fastening bolt, the lever 308 ingeniously indirectly moves the bushing 40 and the tool to rotate around the bushing 40 as the rotation axis. Compared with the method of the drive motor 305 directly driving the spindle 306 and the bushing 40, this device, through the indirect drive structure of the lever 308, can effectively avoid the shaft alignment tolerance caused by direct drive, effectively eliminate the deviation during the tool rotation process, and thus improve the accuracy of tool cylindricity detection.

[0046] In this embodiment, as Figures 1-5 As shown, the included angles of the V-shapes formed by the first bayonet 204, the second bayonet 205, the third bayonet 206, and the fourth bayonet 402 are the same, ensuring the consistency of the tangency of the cutting tool at each bayonet.

[0047] The specific working process of this utility model is as follows:

[0048] (1) Vertical positioning of the cutting tool

[0049] First, one end of the tool is vertically placed into the receiving groove 401 of the bushing 40. The sliding block 209 slides on the first guide post 207 and the second guide post 208, causing the third clamping plate 203 to move along the path of the guide posts. Simultaneously, since the spring 210 is sleeved on the first guide post 207 and located between the baffle 211 and the sliding block 209, as the sliding block 209 is dragged, the third clamping plate 203 moves away from the first clamping plate 201, compressing the spring 210. After releasing the sliding block 209, the preload provided by the spring 210 keeps the third clamping plate 203 in a constant position. Maintaining a supporting force towards the first clamping plate 201 ensures that the third latch 206 on the third clamping plate 203 is continuously and stably pressed against the outer surface of the tool, thereby pressing the tool against the first latch 204, the second latch 205, and the fourth latch 402. Furthermore, by utilizing the fact that the V-shaped latches are all tangent to the outer surface of the tool, and that the first latch 204, the second latch 205, and the fourth latch 402 are all located on the same straight line perpendicular to the ground, it is possible to ensure that the tool is straight and perpendicular to the ground, and multi-point stable clamping of the tool can also be achieved during the rotation process.

[0050] (2) Rotate the cutting tool

[0051] By tightening the fastening bolt, one end of it is inserted into the receiving groove 401 and the tool is firmly pressed against the fourth bayonet 402, so that the tool is reliably limited in the receiving groove 401. The drive motor 305 drives the second pulley 303 to rotate, and transmits the power to the first pulley 302 through the transmission belt 304, thereby driving the main shaft 306 and the central turntable 307 to rotate synchronously. Since the lever 308 fixed on the top of the central turntable 307 forms an abutment relationship with the fastening bolt, the lever 308 indirectly moves the bushing 40 and the tool to rotate around the bushing 40 as the rotation axis.

[0052] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A structure for measuring the cylindricity of a long knife, characterized in that, include: A base, wherein the base includes a base plate and a wall plate, the wall plate being vertically disposed on one side of the top of the base plate; A positioning assembly includes a first clamping plate, a second clamping plate, and a third clamping plate that moves towards or away from the first clamping plate. The first clamping plate and the second clamping plate are parallel vertically and respectively disposed on one side of the wall panel. The third clamping plate is located on the opposite side of the first clamping plate and the second clamping plate. A first V-shaped latch is provided on one side of the first clamping plate, a second V-shaped latch is provided on one side of the second clamping plate, and a third V-shaped latch is provided on the side of the third clamping plate facing the first clamping plate. A rotary drive component, which is located below the positioning assembly and is mounted on the base plate; A bushing is provided on the rotating end of the rotary drive component, and a receiving groove is provided in the center inside the bushing. A fourth V-shaped latch is provided on one side wall of the receiving groove, and the fourth latch, the first latch, and the second latch are all on a straight line perpendicular to the ground. A limiting component is provided on the bushing to limit one end of the tool within the bushing receiving groove.

2. The long knife cylindricity measurement structure according to claim 1, characterized in that, The positioning assembly further includes a first guide post, a second guide post, a slider, a spring, and a baffle. One end of the first guide post and the second guide post are respectively fixed to one side of the wall panel. The slider slides outside the first guide post and the second guide post. The baffle is fixed to the other end of the first guide post. The spring is sleeved outside the first guide post and located between the baffle and the slider.

3. The long knife cylindricity measurement structure according to claim 2, characterized in that, The slider extends from one side to the third clamping plate and forms a T-shape, and the third clamping plate is fixed to the extended end of the slider.

4. The long knife cylindricity measurement structure according to claim 1, characterized in that, The rotary drive component includes a support plate, a first pulley, a second pulley, a transmission belt, a drive motor, a main shaft, a central turntable, and a lever. The support plate is mounted on a base plate. The first pulley and the second pulley are rotatably connected to the support plate via rotating shafts. The transmission belt is sleeved on the outside of the first pulley and the second pulley. The drive motor is mounted on the support plate, and the drive end of the drive motor is coaxially fixed to the top of the second pulley.

5. The long knife cylindricity measurement structure according to claim 4, characterized in that, One end of the main shaft is coaxially fixed to the top of the first pulley, and the central turntable is coaxially fixed to the other end of the main shaft.

6. The long knife cylindricity measuring structure according to claim 5, characterized in that, The bushing is rotatably connected to the top of the turntable via a rotating shaft, and the lever is fixed to the top of the turntable.

7. The long knife cylindricity measurement structure according to claim 6, characterized in that, The limiting component includes a fastening bolt, one end of which is screwed onto the outside of the bushing and extends into the receiving groove, and the other end of the fastening bolt abuts against the outside of the lever.

8. The long knife cylindricity measurement structure according to claim 1, characterized in that, The included angles of the V-shapes formed by the first, second, third, and fourth bayonets are the same.

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