A tap deflection detector
By designing an automated tap runout detector, and utilizing a fixed center and a moving center in conjunction with a drive device, flexible and adaptable testing of taps of different sizes is achieved, improving testing efficiency and accuracy, and solving the problems of poor adaptability and repetitive operations in existing technologies.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BOAO PRECISION LNDUSTRY (DALIAN) CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-14
AI Technical Summary
Existing tap runout detection methods suffer from poor adaptability, low efficiency, and low accuracy. In particular, when detecting taps of different sizes, it is necessary to change the fixture or adjust the probe. Furthermore, when detecting taps of the same size in batches, repeated clamping and calibration are required, resulting in cumbersome operation and large errors.
A tap runout detector was designed, comprising a fixed center, a moving center, a drive unit, and a lifting unit. The center spacing is adjusted by a slide and the drive unit, and automated testing is achieved by combining a dial indicator. It can adapt to taps of different sizes, and a spring provides flexible contact force to ensure stability and accuracy.
It improves the flexibility and efficiency of testing, adapts to the needs of multi-variety and small-batch testing, enhances testing accuracy, avoids tap deformation or damage, and is suitable for environments with high levels of oil mist or dust.
Smart Images
Figure CN224499301U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tap testing technology, and in particular to a tap runout tester. Background Technology
[0002] During tap manufacturing or regrinding, runout testing is performed on the cutting part of the tap. Tap runout testing uses specific tools and methods to measure the radial runout and axial oscillation of the tap's cutting cone during rotation or axial movement. Its core objective is to determine whether the tap's geometric accuracy meets the machining requirements, thus avoiding thread machining quality problems caused by the tap's own deviations.
[0003] Currently, tap runout is detected by manually rotating the tap slowly and observing the pointer swing of a dial indicator / micrometer, recording the maximum radial / axial displacement difference. However, manual tap runout detection suffers from poor compatibility with different tap sizes and the inconvenience of repeatedly disassembling taps of the same size. For example, when testing taps of different sizes, it is necessary to change the fixture or adjust the support structure, and the dial indicator / micrometer probe needs to be manually adjusted to a specific position on the cutting cone, which is time-consuming and may lead to measurement errors due to inaccurate fit. When testing taps of the same size in batches, the probe position needs to be re-clamped and calibrated for each tap tested, and the repetitive operation reduces efficiency. Utility Model Content
[0004] The purpose of this invention is to provide a tap runout detector to solve the problems existing in the prior art, thereby improving the flexibility, efficiency and accuracy of the detection, and making it suitable for detection scenarios involving multiple varieties and small batches.
[0005] To achieve the above objectives, this utility model provides the following solution:
[0006] This utility model provides a tap runout detector, comprising: a base including a slide groove; a fixed center assembly including a fixed seat and a fixed center, the fixed seat being fixedly connected to the base, and the fixed center being fixedly connected to the fixed seat; and a movable center assembly including a movable seat, a movable center, an adjusting device, and a driving device, wherein the movable seat is slidably connected to the slide groove, the driving device is used to drive the movable seat to move in a direction closer to or away from the fixed seat, the movable seat is slidably mounted on the movable seat, and the movable center can move in a direction closer to or away from the fixed center, the movable center including a center rod, a limiting protrusion ring, and an adjusting protrusion ring, the limiting protrusion ring being fixedly connected to the end of the center rod near the center, and the adjusting protrusion ring being fixedly connected to the fixed center. The convex ring is detachably connected to the end of the tip rod away from the tip. The adjusting device includes a spring and a limiting member. The spring is sleeved outside the tip rod, and one end of the spring abuts against the limiting convex ring. The other end of the spring abuts against the moving seat. The limiting member is connected to the moving seat and can abut against the adjusting convex ring to limit the movement of the moving tip toward the fixed tip. The tap is clamped between the fixed tip and the moving tip. The detection assembly includes a dial indicator and a lifting device. The dial indicator is connected to the lifting device, which is used to drive the dial indicator to rise or fall. The lifting device is slidably connected to the slide groove. The dial indicator is used to detect the radial or axial runout of the tap to be measured.
[0007] Preferably, the adjusting convex ring is threadedly connected to the center rod.
[0008] Preferably, the movable tip assembly further includes a locking element for locking the movable base to the base.
[0009] Preferably, the limiting member includes a limiting seat and a limiting pressure rod. The limiting seat is fixedly connected to the movable seat, and the limiting pressure rod is rotatably connected to the limiting seat via a pin. One end of the limiting pressure rod can abut against the adjusting convex ring.
[0010] Preferably, the driving device includes a support base, a lead screw, and a handwheel. The support base is fixedly connected to the base, one end of the lead screw is fixedly connected to the handwheel, and the other end of the lead screw is threadedly connected to the movable seat.
[0011] Preferably, the lifting device includes a base plate, a vertical plate, a gear, a rack, and a connecting rod. The base plate is slidably connected to the slide groove, the vertical plate is vertically fixedly connected to the base plate, the gear is mounted on the vertical plate, the rack is slidably connected to the vertical plate, the gear meshes with the rack, and the rack is fixedly connected to the dial indicator via the connecting rod.
[0012] Preferably, the lifting device further includes a support spring, one end of which is fixedly connected to the base plate, and the other end of which is fixedly connected to the rack.
[0013] Preferably, the lifting device further includes a base plate locking component, which is used to lock the base plate to the base.
[0014] The present invention achieves the following technical advantages over the prior art:
[0015] This invention provides a tap runout detector. A fixed tip and a movable tip work together to clamp the tap. A drive device moves the movable base along a groove on the base, adjusting the distance between the two tips to accommodate taps of different lengths. The device is simple and quick to operate, suitable for testing various tap specifications. The movable tip is mounted on the movable base, and its movement range and contact force are controlled by an adjustment device. This not only facilitates batch testing of taps of the same size, improving testing efficiency, but also ensures the tap remains stable during testing through the flexible contact force provided by the spring, preventing deformation or damage due to excessive clamping. The lifting device can move freely along the base, flexibly adjusting the measuring position and height of the dial indicator to meet the measurement needs of different parts. High-precision measurements of the tap's test area using the dial indicator can detect radial or axial runout, thereby evaluating the tap's geometric accuracy and machining quality. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the tap runout detector.
[0018] Figure 2 This is a schematic diagram of the tap runout detector from another perspective.
[0019] Figure 3 This is a front view of a tap runout detector;
[0020] Figure 4 This is a top view of the tap runout detector;
[0021] Figure 5 for Figure 3 Enlarged view of part A in the middle.
[0022] In the diagram: 1-base; 2-slide groove; 3-fixed seat; 4-fixed center; 5-moving seat; 6-center rod; 7-limiting protrusion; 8-adjusting protrusion; 9-spring; 10-limiting component; 11-limiting seat; 12-limiting pressure rod; 13-support seat; 14-lead screw; 15-handwheel; 16-base plate; 17-vertical plate; 18-gear; 19-rack; 20-connecting rod; 21-dial indicator; 22-supporting spring; 23-taper. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] The purpose of this invention is to provide a tap runout detector to solve the problems existing in the prior art, thereby improving the flexibility, efficiency and accuracy of the detection, and making it suitable for detection scenarios involving multiple varieties and small batches.
[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0026] This utility model provides a tap runout detector, such as Figures 1-5As shown, the assembly includes a base 1, a fixed tip 4 assembly, a movable tip assembly, and a detection assembly. The base 1 includes a slide groove 2. The fixed tip 4 assembly includes a fixed seat 3 and a fixed tip 4. The fixed seat 3 is fixedly connected to the base 1, and the fixed tip 4 is fixedly connected to the fixed seat 3. The movable tip assembly includes a movable seat 5, a movable tip, an adjustment device, and a drive device. The movable seat 5 is slidably connected to the slide groove 2. The drive device is used to drive the movable seat 5 to move in a direction closer to or away from the fixed seat 3. The movable seat 5 is slidably mounted on the movable seat 5, and the movable tip can move in a direction closer to or away from the fixed tip 4. The movable tip includes a tip rod 6, a limiting protrusion ring 7, and an adjusting protrusion ring 8. The limiting protrusion ring 7 is fixed to the end of the tip rod 6 near the tip. The connection is as follows: the adjusting convex ring 8 is detached from the end of the tip rod 6 away from the tip; the adjusting device includes a spring 9 and a limiting member 10; the spring 9 is sleeved on the tip rod 6, and one end of the spring 9 abuts against the limiting convex ring 7, and the other end of the spring 9 abuts against the moving seat 5; the limiting member 10 is connected to the moving seat 5; the limiting member 10 can abut against the adjusting convex ring 8 to limit the movement of the moving tip toward the fixed tip 4; the fixed tip 4 and the moving tip clamp the tap 23; the detection assembly includes a dial indicator 21 and a lifting device; the dial indicator 21 is connected to the lifting device; the lifting device is used to drive the dial indicator 21 to rise or fall; the lifting device is slidably connected to the slide 2; the dial indicator 21 is used to detect the radial or axial runout of the part of the tap 23 to be measured. The fixed tip 4 serves as a fixed support point for the tap 23, ensuring that the tap 23 does not shift during testing and providing a stable reference for measurement. The moving tip assembly is adjusted in position by a drive device, allowing the fixed tip 4 and the moving tip to clamp the tap 23 securely. The moving base 5 can slide flexibly along the groove 2 of the base 1, allowing for quick adjustment of the distance between the fixed tip 4 and the moving tip, thus adapting to taps 23 of different lengths. This convenient and efficient operation meets the testing needs of various specifications of taps 23. The moving tip is mounted on the moving base 5, and its movement range and contact force can be precisely controlled by an adjustment device. This not only facilitates batch testing of taps 23 of the same size, significantly improving testing efficiency, but also ensures that the tap 23 remains stable during testing through the flexible contact force provided by the spring 9, effectively preventing deformation or damage to the tap 23 due to excessive clamping. The lifting device of the testing assembly can move freely along the base 1, flexibly adjusting the measurement position and height of the dial indicator 21 to meet the measurement needs of different parts of the tap 23. By using a dial indicator 21 to perform high-precision measurements on the tap 23, the radial or axial runout of the tap 23 can be accurately detected, thereby evaluating the geometric accuracy and machining quality of the tap 23 and providing a reliable basis for quality control of the tap 23. The tap 23 runout detector provided by this utility model is simple, lightweight, compact in structure, easy to maintain, and has relatively relaxed requirements for the workshop working environment, making it suitable for environments with high levels of oil mist or dust.
[0027] In a further preferred embodiment of this utility model, the adjusting convex ring 8 is threadedly connected to the tip rod 6, and the movable seat 5 has an insertion hole. The movable tip is installed in the insertion hole. When installing the movable tip, the spring 9 is first sleeved on the tip rod 6, and then the end of the tip rod 6 away from the limiting convex ring 7 is passed through the insertion hole and then threadedly connected to the adjusting convex ring 8. By adjusting the cooperation between the adjusting convex ring 8 and the tip rod 6, the compression of the spring 9 sleeved on the tip rod 6 can be adjusted, thereby controlling the magnitude of the elastic force provided by the spring 9 to adapt to different clamping or contact requirements.
[0028] In a further preferred embodiment of this utility model, the movable tip assembly also includes a locking member that locks the movable seat 5 and the base 1, ensuring that the fixed tip 4 and the movable tip can firmly clamp the tap 23, ensuring smooth measurement and improving measurement efficiency.
[0029] In a further preferred embodiment of this utility model, the limiting member 10 includes a limiting seat 11 and a limiting pressure rod 12. The limiting seat 11 is fixedly connected to the movable seat 5, and the limiting pressure rod 12 is rotatably connected to the limiting seat 11 via a pin. One end of the limiting pressure rod 12 can abut against the adjusting convex ring 8. By rotating the limiting pressure rod 12, a force is applied to the adjusting convex ring 8, thereby limiting the axial displacement range of the movable tip or the preload of the adjusting spring 9.
[0030] In a further preferred embodiment of this utility model, the driving device includes a support base 13, a lead screw 14, and a handwheel 15. The support base 13 is fixedly connected to the base 1, one end of the lead screw 14 is fixedly connected to the handwheel 15, and the other end of the lead screw 14 is threadedly connected to the movable seat 5. The support base 13 is fixedly mounted on the base 1 to support and position the lead screw 14; by rotating the handwheel 15, the lead screw 14 is rotated, thereby driving the movable seat 5 to move linearly along the axial direction of the lead screw 14, which facilitates the adjustment of the distance between the movable center and the fixed center 4.
[0031] In a further preferred embodiment of this utility model, the lifting device includes a base plate 16, a vertical plate 17, a gear 18, a rack 19, and a connecting rod 20. The base plate 16 is slidably connected to the slide groove 2, the vertical plate 17 is vertically fixedly connected to the base plate 16, the gear 18 is mounted on the vertical plate 17, the rack 19 is slidably connected to the vertical plate 17, and the gear 18 meshes with the rack 19. The rack 19 is fixedly connected to the dial indicator 21 via the connecting rod 20. The base plate 16 is slidably connected to the slide groove 2 on the base 1, allowing for adjustment and positioning according to the measurement position. The rotating gear 18 can drive the rack 19 to move vertically, thereby driving the dial indicator 21 to rise and fall, achieving precise adjustment of the measurement position.
[0032] In a further preferred embodiment of this utility model, the lifting device further includes a support spring 22. One end of the support spring 22 is fixedly connected to the base plate 16, and the other end of the support spring 22 is fixedly connected to the rack 19. The support spring 22 is fixedly connected to the bottom of the rack 19. The elastic force of the support spring 22 can help the rack 19 maintain a stable position at the adjustment endpoint, and the support spring 22 also acts as a lower limit to prevent the rack 19 from driving the connecting rod 20 and the dial indicator 21 to fall excessively due to gravity during the downward adjustment process, thus preventing damage.
[0033] In a further preferred embodiment of this utility model, the lifting device also includes a locking member for the base plate 16, which is used to lock the base plate 16 to the base 1 to ensure the stability of the measurement process.
[0034] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A tap runout detector, characterized in that: include: Base, including the sliding groove; A fixed-center assembly includes a fixed base and a fixed-center, wherein the fixed base is fixedly connected to the base and the fixed-center is fixedly connected to the fixed base; A movable tip assembly includes a movable base, a movable tip, an adjusting device, and a driving device. The movable base is slidably connected to the slide groove. The driving device drives the movable base to move in a direction closer to or away from the fixed base. The movable base is slidably mounted on the movable base, and the movable tip can move in a direction closer to or away from the fixed tip. The movable tip includes a tip rod, a limiting protrusion ring, and an adjusting protrusion ring. The limiting protrusion ring is fixedly connected to the end of the tip rod near the tip, and the adjusting protrusion ring is detachably connected to the end of the tip rod away from the tip. The adjusting device includes a spring and a limiting member. The spring is sleeved outside the tip rod, and one end of the spring abuts against the limiting protrusion ring, while the other end of the spring abuts against the movable base. The limiting member is connected to the movable base and can abut against the adjusting protrusion ring to restrict the movable tip from moving toward the fixed tip. A tap is clamped between the fixed tip and the movable tip. The detection component includes a dial indicator and a lifting device. The dial indicator is connected to the lifting device, which is used to drive the dial indicator to rise or fall. The lifting device is slidably connected to the slide groove. The dial indicator is used to detect the radial or axial runout of the tap to be measured.
2. The tap runout detector according to claim 1, characterized in that: The adjusting convex ring is threadedly connected to the center rod.
3. The tap runout detector according to claim 1, characterized in that: The movable top assembly also includes a locking element that locks the movable base to the base.
4. The tap runout detector according to claim 1, characterized in that: The limiting component includes a limiting seat and a limiting pressure rod. The limiting seat is fixedly connected to the movable seat, and the limiting pressure rod is rotatably connected to the limiting seat via a pin. One end of the limiting pressure rod can abut against the adjusting convex ring.
5. The tap runout detector according to claim 1, characterized in that: The driving device includes a support base, a lead screw, and a handwheel. The support base is fixedly connected to the base, one end of the lead screw is fixedly connected to the handwheel, and the other end of the lead screw is threadedly connected to the movable seat.
6. The tap runout detector according to claim 1, characterized in that: The lifting device includes a base plate, a vertical plate, a gear, a rack, and a connecting rod. The base plate is slidably connected to the slide groove, the vertical plate is vertically fixedly connected to the base plate, the gear is mounted on the vertical plate, the rack is slidably connected to the vertical plate, the gear meshes with the rack, and the rack is fixedly connected to the dial indicator via the connecting rod.
7. The tap runout detector according to claim 6, characterized in that: The lifting device also includes a support spring, one end of which is fixedly connected to the base plate, and the other end of which is fixedly connected to the rack.
8. The tap runout detector according to claim 6, characterized in that: The lifting device also includes a base plate locking component, which is used to lock the base plate to the base.