Screw tap detection device

Abstract

The utility model provides a screw tap detection device, and belongs to the technical field of detection devices. The screw tap detection device solves the problem that an existing screw tap detection device is low in measurement precision. The screw tap detection device comprises a bottom plate, the bottom plate is provided with a left base, a right base capable of moving in the X-axis direction and a dial indicator capable of moving in the X-axis direction, the Y-axis direction and the Z-axis direction, the left base is provided with a left tip, the right base is provided with a right tip, the inner end of the right base is fixedly connected with a finger cylinder, and two grippers of the finger cylinder are arranged adjacent to the right tip. And the two grippers can clamp the tail end of the screw tap. The screw tap detection device has the advantage of high detection precision.

Description

Technical Field

[0001] This utility model belongs to the technical field of testing devices and relates to a tap testing device. Background Technology

[0002] A tap is a standard cutting tool used for machining cylindrical and conical internal threads. It is widely used in the manufacturing industry. The design and production of taps have a great influence on the strength of the tap's cutting edge. Therefore, taps need to be inspected during machining.

[0003] Existing tap testing devices, such as the tap measuring device and method disclosed in Chinese patent literature [Patent No.: 202210513310.8; Application Publication No.: CN114777622A], include a base plate, a left center, a dial indicator, a bracket, a right center, a right center base, a clamping device, a first guide rail, and a second guide rail. The right center is fixedly connected to a fixed block fixedly mounted on the base plate. The right center is fixedly connected to the right center base, and the right center base is slidably connected to the second guide rail. The second guide rail is fixedly mounted on the base plate. The first guide rail is fixedly mounted on the base plate and is parallel to the outside of the second guide rail. The clamping device is used to clamp the tap to be tested and is slidably connected to the second guide rail. The bracket is fixedly mounted on the side of the base plate away from the first guide rail. The dial indicator is mounted on the bracket that can move along the X and Z directions.

[0004] In this type of measuring device, the tap holder is fixedly connected to the first guide rail by a locking nut and a screw. The tap holder slides on the first guide rail by adjusting the locking nut. The tap holder has a V-shaped groove, and the tap to be measured is placed in the V-shaped groove. The tap to be measured is fixed to the V-shaped groove by a locking screw. The clamping device of this structure is used for fixing, but it is fixed on the cylindrical part of the tap. The fixation is not very firm, and the tap may deflect and slip. This causes a certain deviation in the dial indicator during measurement, reducing the measurement accuracy. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a tap testing device, which solves the technical problem of how to improve testing accuracy.

[0006] The purpose of this utility model can be achieved through the following technical solution: a tap testing device, including a base plate, a left base, a right base that can move along the X-axis, and a dial indicator that can move along the XYZ-axis. The left base is provided with a left tip, and the right base is provided with a right tip. The device is characterized in that a finger cylinder is fixedly connected to the inner end of the right base, and two grippers of the finger cylinder are arranged adjacent to the right tip. The two grippers can hold the tail end of the tap.

[0007] During testing, the right base is moved, and the tap is held in place by the left and right tips. The finger cylinder is fixed to the inner end of the right base and moves with the right base. The two grippers of the finger cylinder are located near the right tip. Since the tail end of the tap is square, the tap can be positioned by clamping the two opposite faces of the tail end with the two grippers. The tap is firmly clamped, so there is no problem of tap deflection, which improves the stability of the tap. Thus, the front and back angles of the tap can be accurately tested by a dial indicator, improving the testing accuracy of the tap.

[0008] In the aforementioned tap testing device, the testing device further includes a flange and an adjusting plate. The flange is fixedly connected to the inner end of the right base. The top of the adjusting plate is fitted onto the flange and locked with a nut. The bottom of the adjusting plate is fixedly connected to the right base with bolts. The finger cylinder is fixedly connected to the adjusting plate. The flange, nut, and bolts work together to fix the adjusting plate, thereby allowing the finger cylinder to be fixedly connected to the inner end of the right base, enabling the finger cylinder to clamp and position the tap.

[0009] In the aforementioned tap testing device, the adjusting plate is rotatable around the flange. A scale indicator is fixedly connected to the adjusting plate, and the flange has graduation lines, with the scale indicator pointing towards these graduation lines. This structure allows for adjustment of the adjusting plate's angle, which in turn adjusts the angles of the two grippers, enabling them to precisely clamp and position the tap, improving tap stability and thus increasing the tap's testing accuracy.

[0010] In the aforementioned tap testing device, the inner end of the right base has an arc-shaped groove, and a flexible cylindrical pin is inserted through the bottom of the adjusting plate, with the cylindrical pin partially embedded in the arc-shaped groove. This structure allows for fine-tuning of the position of the adjusting plate, ensuring that the two grippers are positioned at the set location, enabling them to accurately clamp and position the tap, improving the tap's stability, and thus increasing the tap's testing accuracy. The cylindrical pin is also flexible and can produce a certain degree of deflection.

[0011] In the aforementioned tap testing device, the right tip passes through the flange. This allows for better integration of the flange, adjusting plate, and right base, resulting in a more rational structure.

[0012] In the aforementioned tap testing device, a slide rail is fixedly connected to the base plate along the X-axis. A sliding block is slidably connected to the slide rail. A first sliding frame is slidably connected to the sliding block along the Y-axis. A second sliding frame is slidably connected to the first sliding frame along the Z-axis. The dial indicator is rotatably mounted on the second sliding frame. This structure allows the dial indicator to move along the X, Y, and Z axes, ensuring that the dial indicator can be moved to the testing position, thereby improving testing accuracy.

[0013] In the aforementioned tap testing device, the base plate has a sliding groove arranged along the X-axis, the slide rail is parallel to the sliding groove, and the right base can move along the sliding groove.

[0014] In the aforementioned tap testing device, the left base can move along the sliding groove. That is, the left tip can also move relative to the tap, allowing for better tap positioning as needed.

[0015] Compared with the prior art, the tap testing device provided by this utility model has the following advantages:

[0016] 1. This testing device uses two grippers to hold the two opposite sides of the tap's tail end, thus achieving tap positioning. The tap is firmly gripped, preventing tap deflection and improving tap stability. As a result, the rake angle and clearance angle of the tap can be accurately tested using a dial indicator, improving the tap's testing accuracy.

[0017] 2. The position of the adjustment plate of this detection device can be finely adjusted so that the two grippers of the finger cylinder are in the appropriate position, thereby accurately clamping and positioning the tap, improving the stability of the tap and the detection accuracy of the tap. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the tap testing device.

[0019] Figure 2 This is a schematic diagram of the finger cylinder and right base of this testing device.

[0020] Figure 3 This is an exploded view of the adjustment plate and right base of this testing device.

[0021] Figure 4 This is the structure of the dial indicator of this testing device that moves in the XYZ axis direction.

[0022] In the diagram: 1. Base plate; 2. Left base; 3. Right base; 4. Dial indicator; 5. Left center; 6. Right center; 7. Finger cylinder; 71. Handle; 8. Tap; 9. Flange; 10. Adjusting plate; 11. Nut; 12. Bolt; 13. Scale indicator; 14. Scale line; 15. Arc groove; 16. Cylindrical pin; 17. Slide rail; 18. Sliding block; 19. First sliding frame; 20. Second sliding frame; 21. Sliding groove. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] like Figure 1 As shown, this tap 8 testing device includes a base plate 1, a left base 2, a right base 3, a dial indicator 4, a left center 5, a right center 6, a finger cylinder 7, a flange 9, an adjusting plate 10, a slide rail 17, a sliding block 18, a first sliding frame 19, and a second sliding frame 20.

[0025] The left base 2 and the right base 3 are both set on the base plate 1. The base plate 1 has a sliding groove 21 set along the X-axis. The left base 2 and the right base 3 can move along the sliding groove 21. The left base 2 is provided with a left tip 5 and the right base 3 is provided with a right tip 6.

[0026] like Figure 2 , Figure 3 As shown, flange 9 is fixed to the inner end of right base 3, right tip 6 passes through flange 9, top of adjusting plate 10 is sleeved on flange 9, adjusting plate 10 can rotate around flange 9, scale index 13 is fixed on adjusting plate 10, scale line 14 is provided on flange 9, scale index 13 points to scale line 14, inner end of right base 3 has arc groove 15, bottom of adjusting plate 10 is provided with elastic cylindrical pin 16, cylindrical pin 16 is partially embedded in arc groove 15, nut 11 is sleeved on flange 9 and locked to fix adjusting plate 10, bottom of adjusting plate 10 is fixed to right base 3 by bolt 12, finger cylinder 7 is fixed to adjusting plate 10, two grippers 71 of finger cylinder 7 are set near right tip 6, two grippers 71 can clamp the tail end of tap 8.

[0027] The dial indicator 4 can move along the XYZ axes. In this embodiment, the dial indicator 4 is positioned near the left center point 5 to detect the rake angle of the tap 8. In actual production, the dial indicator 4 can be positioned near the right center point 6 to detect the clearance angle of the tap 8. Figure 4 As shown, a slide rail 17 is fixedly connected to the base plate 1 along the X-axis direction. The slide rail 17 is parallel to the sliding groove 21. A sliding block 18 is slidably connected to the slide rail 17. A first sliding frame 19 is slidably connected to the sliding block 18 along the Y-axis direction. A second sliding frame 20 is slidably connected to the first sliding frame 19 along the Z-axis direction. The dial indicator 4 is rotatably mounted on the second sliding frame 20.

[0028] During testing, the tap 8 is held in place by the left center 5 and the right center 6. The finger cylinder 7 is activated, and the two opposite faces of the tail end of the tap 8 are clamped by the gripper 71 to achieve the positioning of the tap 8. Then, the dial indicator 4 is moved to the appropriate position, and the front angle of the tap 8 is tested by the dial indicator 4.

[0029] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0030] Although this document frequently uses terms such as base plate 1, left base 2, right base 3, dial indicator 4, left center 5, right center 6, finger cylinder 7, gripper 71, tap 8, flange 9, adjusting plate 10, nut 11, bolt 12, scale indicator 13, scale line 14, arc groove 15, cylindrical pin 16, slide rail 17, sliding block 18, first sliding frame 19, second sliding frame 20, and sliding groove 21, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A tap testing device, comprising a base plate (1), wherein the base plate (1) is provided with a left base (2), a right base (3) movable along the X-axis, and a dial indicator (4) movable along the XYZ axes, wherein the left base (2) is provided with a left tip (5), and the right base (3) is provided with a right tip (6), characterized in that, The inner end of the right base (3) is fixedly connected to a finger cylinder (7), and the two grippers (71) of the finger cylinder (7) are arranged near the right tip (6). The two grippers (71) can hold the tail end of the tap (8).

2. The tap detection device of claim 1, wherein The detection device also includes a flange (9) and an adjusting plate (10). The flange (9) is fixed to the inner end of the right base (3). The top of the adjusting plate (10) is fitted onto the flange (9) and locked with a nut (11). The bottom of the adjusting plate (10) is fixed to the right base (3) by bolts (12). The finger cylinder (7) is fixed to the adjusting plate (10).

3. A tap detection device according to claim 2, wherein The adjusting plate (10) can rotate around the flange (9). A scale indicator (13) is fixedly connected to the adjusting plate (10). A scale line (14) is provided on the flange (9). The scale indicator (13) points to the scale line (14).

4. The tap detection device of claim 2, wherein The inner end of the right base (3) has an arc groove (15), and the bottom of the adjusting plate (10) is provided with an elastic cylindrical pin (16), which is partially embedded in the arc groove (15).

5. A tap detection device according to claim 2 or 3 or 4, wherein, The right tip (6) passes through the flange (9).

6. A tap detection device according to claim 1 or 2 or 3 or 4, wherein, A slide rail (17) is fixedly connected to the base plate (1) along the X-axis direction. A sliding block (18) is slidably connected to the slide rail (17). A first sliding frame (19) is slidably connected to the sliding block (18) along the Y-axis direction. A second sliding frame (20) is slidably connected to the first sliding frame (19) along the Z-axis direction. The dial indicator (4) is rotatably mounted on the second sliding frame (20).

7. A tap detection device according to claim 6, wherein The base plate (1) has a sliding groove (21) arranged along the X-axis direction. The slide rail (17) is parallel to the sliding groove (21), and the right base (3) can move along the sliding groove (21).

8. A tap detection device according to claim 7, wherein The left base (2) can move along the sliding groove (21).

Images