A device for detecting the size of a twist drill

Abstract

This application relates to the field of twist drill inspection technology, and in particular to a twist drill size inspection device, including a positioning shell, a bracket, a scale, a movable top plate, a counting bar, a length inspection component, an outer diameter inspection component, and a laser scanner. The twist drill size inspection device of this application automatically captures the drill bit profile and quantifies parameters such as the drill tip angle and helix angle by combining a laser scanner with a high-resolution camera, eliminating human error. The outer diameter inspection component achieves objective measurement of the outer diameter through the cooperation of an outward-expanding contact bar with the scale lines. The length inspection component uses a stepper motor to drive a threaded rod, which in turn moves a sliding plate automatically, achieving rapid length measurement in conjunction with the counting bar and the scale. Furthermore, integrating the length inspection component, the outer diameter inspection component, and the laser scanner into a single device ensures stable drill bit positioning during inspection and avoids repeated clamping.

Description

Technical Field

[0001] This application relates to the field of twist drill testing technology, and in particular to a twist drill size testing device. Background Technology

[0002] Twist drills are commonly used drilling tools in machining. Their dimensional accuracy directly affects the machining quality. By using appropriate detection devices, the dimensional quality of twist drills can be effectively controlled, thereby improving machining accuracy and tool life.

[0003] A search revealed that CN219757272U discloses a high-precision drill bit dimension detection device. By setting a first detection device, a second measurement device, and a third detection device on the measuring groove, the device can measure the outer diameter and length of the drill bit at different positions. A support plate is set between the measuring groove and the base plate, and telescopic columns are set on both sides of the support plate. The lifting and lowering can be adjusted by the cooperation of the spiral column inside the support plate, so that the inner surface of the measuring groove is in close contact with the drill bit, thereby improving the detection accuracy. The telescopic columns can support the measuring groove, making the measuring groove detection process more stable.

[0004] Regarding the aforementioned technologies, the inventors believe that the following technical defects need to be improved: Although the above-mentioned device can detect the length and outer diameter of the drill bit, in order to ensure the processing performance of the drill bit, the existing detection method is to manually observe the drill bit with a microscope. During the detection, the results are mostly judged based on the experience of the workers, which is prone to misjudgment. In addition, the detection of the drill bit and the length and outer diameter of the drill bit cannot be integrated into one unit, thereby increasing the floor space required. Utility Model Content

[0005] This application provides a twist drill size detection device to improve the following technical problems: Although the above-mentioned device can detect the length and outer diameter of the drill bit, in order to ensure the machining performance of the drill bit, the existing detection method is to manually observe the drill bit with a microscope. During the detection, the results are mostly judged by the worker's experience, which is prone to misjudgment. Moreover, the detection of the drill bit and the length and outer diameter of the drill bit cannot be integrated into one unit, thereby increasing the floor space.

[0006] This application provides a twist drill size detection device, which adopts the following technical solution:

[0007] A twist drill size detection device includes a positioning shell, a bracket, a scale, a movable top plate, a counting bar, a length detection component, an outer diameter detection component, and a laser scanner. The bracket is fixedly connected to the outside of the positioning shell, the scale is fixedly connected to the outside of the bracket, the movable top plate is slidably connected to the top of the positioning shell, the counting bar is fixedly connected to the outside of the movable top plate, the length detection component is installed inside the positioning shell, the outer diameter detection component is installed on one side of the movable top plate, and the laser scanner is installed on the side of the movable top plate near the outer diameter detection component.

[0008] The bracket is used to support the scale, the movable top plate is used to connect the counting bar, the counting bar is attached to the scale, and the length detection component is used to accurately measure the length of the twist drill. The outer diameter detection component is attached to the outside of the twist drill bit and accurately detects the outer diameter of the twist drill. The laser scanner captures the drill bit profile through a high-resolution camera and measures the drill tip angle and helix angle.

[0009] In one feasible technical solution of this application, the length detection component includes a stepper motor, a threaded rod, a linear shaft, and a sliding plate. The stepper motor is installed inside the positioning housing, the threaded rod is installed outside the output end of the stepper motor, the linear shaft passes through the interior of the sliding plate and is fixedly connected to the inner wall of the positioning housing, and the outer side of the sliding plate is fixedly connected to the surface of the movable top plate.

[0010] In one feasible technical solution of this application, the outer diameter detection component includes a connecting plate, a backing plate, an outwardly expanding contact strip, and a turnbuckle. The connecting plate is fixedly connected to the outer wall surface of the movable top plate, and the bottom of the connecting plate is fixedly connected to the surface of the backing plate. The top of the backing plate is slidably connected to the bottom surface of the outwardly expanding contact strip. The side wall surface of the outwardly expanding contact strip abuts against the helical surface of the twist drill. The hook end of the turnbuckle is fixedly connected to the surface of the outwardly expanding contact strip by a rope.

[0011] In one feasible technical solution of this application, a circular sleeve and a handle are provided on one side of the bracket. The handle is installed on the outside of the bracket, and the circular sleeve is fixedly connected to the outside of the handle. The inner wall of the circular sleeve is inserted into the end face of the drill rod of the twist drill.

[0012] In one feasible technical solution of this application, the side of the abutment near the circular sleeve is also provided with a scale line for detecting the outer diameter of the twist drill.

[0013] In one feasible technical solution of this application, the top of the positioning shell is further provided with a limiting groove whose size is greater than the thickness of the movable top plate.

[0014] In one feasible technical solution of this application, the abutment plate forms a screw drive structure with the length detection component through the movable top plate, and the end face of the abutment plate is flush with the end face of the counting bar.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] This device uses a laser scanner combined with a high-resolution camera to automatically capture the drill bit profile and quantitatively measure parameters such as drill tip angle and helix angle, eliminating human error. The outer diameter detection component uses an extended contact bar and scale lines to achieve objective measurement of the outer diameter, avoiding deviations from manual readings. The length detection component uses a stepper motor to drive a threaded rod, which in turn moves a sliding plate automatically, achieving rapid length measurement in conjunction with a counting bar and scale. Furthermore, the length detection component, outer diameter detection component, and laser scanner are integrated into a single device. Multi-parameter synchronous detection is achieved through linkage via a movable top plate. A circular sleeve fixes the drill rod end face, ensuring stable drill bit positioning during testing and avoiding repeated clamping, thereby improving the device's testing speed. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the twist drill size detection device according to an embodiment of this application.

[0019] Figure 2 This is a distribution diagram of the handle in the embodiments of this application.

[0020] Figure 3 This is a structural schematic diagram of the cross-sectional view of the positioning shell in the embodiment of this application.

[0021] Figure 4 yes Figure 2 Enlarged view of section A.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Positioning housing; 2. Bracket; 3. Scale; 4. Movable top plate; 5. Counting bar;

[0024] 6. Length detection component; 61. Stepper motor; 62. Threaded rod; 63. Linear shaft; 64. Sliding plate;

[0025] 7. Outer diameter detection assembly; 71. Connecting plate; 72. Support plate; 73. Outward expansion contact strip; 74. Turnbuckle;

[0026] 8. Laser scanner; 9. Circular sleeve; 10. Handle; 11. Scale line; 12. Limiting groove. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, 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 application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0032] This application discloses a device for detecting the size of a twist drill. (Refer to...) Figures 1 to 4The twist drill size detection device includes a positioning housing 1, a bracket 2, a scale 3, a movable top plate 4, a counting bar 5, a length detection component 6, an outer diameter detection component 7, and a laser scanner 8. The bracket 2 is fixedly connected to the outside of the positioning housing 1, the scale 3 is fixedly connected to the outside of the bracket 2, the movable top plate 4 is slidably connected to the top of the positioning housing 1, the counting bar 5 is fixedly connected to the outside of the movable top plate 4, the length detection component 6 is installed inside the positioning housing 1, the outer diameter detection component 7 is installed on one side of the movable top plate 4, and the laser scanner 8 is installed on the side of the movable top plate 4 near the outer diameter detection component 7.

[0033] The bracket 2 is used to support the scale 3, the movable top plate 4 is used to connect the counting bar 5, the counting bar 5 is attached to the scale 3, and the length detection component 6 is used to accurately measure the length of the twist drill. The outer diameter detection component 7 is attached to the outside of the twist drill bit and accurately detects the outer diameter of the twist drill. The laser scanner 8 captures the drill bit profile through a high-resolution camera and measures the drill tip angle and helix angle.

[0034] The laser scanner 8 can capture three-dimensional contours, automatically analyze drill tip geometry parameters, and directly output drill tip angle and helix angle data without manual intervention, supporting full parameter detection of high-precision drill bits.

[0035] The length detection component 6 includes a stepper motor 61, a threaded rod 62, a linear shaft 63, and a sliding plate 64. The stepper motor 61 is installed inside the positioning housing 1. The threaded rod 62 is installed outside the output end of the stepper motor 61. The linear shaft 63 passes through the interior of the sliding plate 64 and is fixedly connected to the inner wall of the positioning housing 1. The outer side of the sliding plate 64 is fixedly connected to the surface of the movable top plate 4.

[0036] The counting bar 5 moves with the movable top plate 4 and stops when its end contacts the top of the drill bit. The length value can be read directly through the scale 3.

[0037] The outer diameter detection assembly 7 includes a connecting plate 71, a backing plate 72, an outwardly expanding contact strip 73, and a turnbuckle 74. The connecting plate 71 is fixedly connected to the outer wall of the movable top plate 4, and the bottom of the connecting plate 71 is fixedly connected to the surface of the backing plate 72. The top of the backing plate 72 is slidably connected to the bottom surface of the outwardly expanding contact strip 73. The side wall of the outwardly expanding contact strip 73 abuts against the helical surface of the twist drill. The hook end of the turnbuckle 74 is fixedly connected to the surface of the outwardly expanding contact strip 73 by a rope.

[0038] Traditional tools struggle to measure complex parameters such as helix angle and cutting edge symmetry. The extended contact strip 73 conforms to the helical surface of the twist drill, and the contact pressure is adjusted via the turnbuckle 74 to accommodate drill bits of different diameters.

[0039] A circular sleeve 9 and a handle 10 are also provided on one side of the bracket 2. The handle 10 is installed on the outside of the bracket 2, and the circular sleeve 9 is fixedly connected to the outside of the handle 10. The inner wall of the circular sleeve 9 is inserted into the end face of the twist drill rod.

[0040] The handle 10 and circular sleeve 9 facilitate quick clamping of the drill bit. The scale 3 and counting bar 5 visually display the length data, and the outer diameter scale 11 provides direct reading. If the device integrates a digital display, the length value is automatically output; otherwise, the reading on the scale 3 is recorded manually. During operation, ensure the drill bit is fully inserted into the circular sleeve 9 to avoid measurement deviation.

[0041] The side of the abutment 72 near the circular sleeve 9 is also provided with a scale line 11 for detecting the outer diameter of the twist drill.

[0042] The top of the positioning housing 1 is also provided with a limiting groove 12, which is larger than the thickness of the movable top plate 4.

[0043] The abutment 72 forms a screw drive structure with the movable top plate 4 and the length detection component 6, and the end face of the abutment 72 is flush with the end face of the counting bar 5.

[0044] The usage process of the twist drill size detection device in this embodiment is roughly as follows:

[0045] When fixing the drill bit, hold the handle 10 and insert the drill rod end face of the twist drill into the circular sleeve 9 to ensure axial fixation of the drill bit. Adjust the drill bit position so that the drill bit edge is suspended above the measurement area of ​​the outer diameter detection component 7. Turn on the power, initialize the laser scanner 8 and stepper motor 61, and check whether the scale 3 and the counting bar 5 are aligned to the zero position. During the detection process, start the stepper motor 61, which drives the threaded rod 62 to rotate, pushing the sliding plate 64 to move along the linear axis 63, causing the movable top plate 4 to slide towards the drill bit tip. The counting bar 5 moves with the movable top plate 4 and stops when its end contacts the top of the drill bit. The length value is read directly through the scale 3. Then rotate the turnbuckle 74 to pull the outward expansion contact bar 73 through the rope, so that its sidewall is in close contact with the helical surface of the twist drill. The scale line 11 on the abutment plate 72 displays the outer diameter value in real time. If the drill bit diameter changes, the outward expansion contact bar 73 slides along the top of the abutment plate 72 to adapt and ensure uniform contact pressure. The high-resolution camera of the laser scanner 8 is aimed at the drill tip and automatically captures the contour image. The software analyzes the drill tip angle, helix angle, and cutting edge symmetry, and the data is directly displayed or transmitted to the terminal. After the inspection is completed, the turnbuckle screw 74 is loosened, causing the outward-expanding contact bar 73 to disengage from the drill bit surface. The stepper motor 61 is then reversed, causing the movable top plate 4 to return to its initial position.

[0046] The beneficial technical effects of the twist drill size detection device in this application are roughly as follows:

[0047] This device uses a laser scanner 8 combined with a high-resolution camera to automatically capture the drill bit profile and quantitatively measure parameters such as drill tip angle and helix angle, eliminating human error. The outer diameter detection component 7, through the cooperation of the outward-expanding contact strip 73 and the scale line 11, achieves objective measurement of the outer diameter, avoiding human reading deviations. The length detection component 6, driven by a stepper motor 61, moves the threaded rod 62, causing the sliding plate 64 to move automatically, and, in conjunction with the counting strip 5 and the scale 3, achieves rapid length measurement. Furthermore, integrating the length detection component 6, the outer diameter detection component 7, and the laser scanner 8 into a single device, and using the movable top plate 4 for simultaneous multi-parameter detection, and fixing the drill rod end face with a circular sleeve 9, ensures stable drill bit positioning during detection, avoids repeated clamping, and thus improves the detection rate of this device.

[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for detecting the size of a twist drill, characterized in that, The device includes a positioning housing (1), a bracket (2), a scale (3), a movable top plate (4), a counting bar (5), a length detection component (6), an outer diameter detection component (7), and a laser scanner (8). The bracket (2) is fixedly connected to the outside of the positioning housing (1), the scale (3) is fixedly connected to the outside of the bracket (2), the movable top plate (4) is slidably connected to the top of the positioning housing (1), the counting bar (5) is fixedly connected to the outside of the movable top plate (4), the length detection component (6) is installed inside the positioning housing (1), the outer diameter detection component (7) is installed on one side of the movable top plate (4), and the laser scanner (8) is installed on the side of the movable top plate (4) near the outer diameter detection component (7). The bracket (2) is used to support the scale (3), the movable top plate (4) is used to connect the counting bar (5), the counting bar (5) is attached to the scale (3), and the length detection component (6) is used to accurately measure the length of the twist drill. The outer diameter detection component (7) is attached to the outside of the twist drill bit and accurately detects the outer diameter of the twist drill. The laser scanner (8) captures the drill bit profile through a high-resolution camera and measures the drill tip angle and helix angle.

2. The device for detecting the size of a twist drill according to claim 1, wherein The length detection component (6) includes a stepper motor (61), a threaded rod (62), a linear shaft (63), and a sliding plate (64). The stepper motor (61) is installed inside the positioning housing (1). The threaded rod (62) is installed outside the output end of the stepper motor (61). The linear shaft (63) passes through the interior of the sliding plate (64) and is fixedly connected to the inner wall of the positioning housing (1). The outer side of the sliding plate (64) is fixedly connected to the surface of the movable top plate (4).

3. The device for detecting the size of a twist drill according to claim 1, wherein The outer diameter detection component (7) includes a connecting plate (71), a backing plate (72), an outwardly expanding contact strip (73), and a turnbuckle (74). The connecting plate (71) is fixedly connected to the outer wall of the movable top plate (4), and the bottom of the connecting plate (71) is fixedly connected to the surface of the backing plate (72). The top of the backing plate (72) is slidably connected to the bottom surface of the outwardly expanding contact strip (73). The side wall of the outwardly expanding contact strip (73) abuts against the helical surface of the twist drill. The hook end of the turnbuckle (74) is fixedly connected to the surface of the outwardly expanding contact strip (73) by a rope.

4. The twist drill size detection device according to claim 3, characterized in that, A circular sleeve (9) and a handle (10) are also provided on one side of the bracket (2). The handle (10) is installed on the outside of the bracket (2). The circular sleeve (9) is fixedly connected to the outside of the handle (10), and the inner wall of the circular sleeve (9) is inserted into the end face of the drill rod of the twist drill.

5. The twist drill size detection device according to claim 4, characterized in that, The abutment plate (72) is also provided with a scale line (11) for detecting the outer diameter of the twist drill on the side near the circular sleeve (9).

6. The twist drill size detection device according to claim 1, characterized in that, The top of the positioning shell (1) is also provided with a limiting groove (12) with a size greater than the thickness of the movable top plate (4).

7. The twist drill size detection device according to claim 3, characterized in that, The abutment (72) forms a screw drive structure with the length detection component (6) through the movable top plate (4), and the end face of the abutment (72) is flush with the end face of the counting bar (5).

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