Measuring device for batch detection of conicity and roundness of circular truncated cone parts

Abstract

The utility model discloses a measuring device for batch detection of conicity and roundness of circular truncated cone parts. A motor is fixed on a machine base, a centering sleeve and a motor shaft of the motor are assembled by adopting a separable structure, a tip is arranged on the machine base and is coaxial with the centering sleeve, the tip can move axially, and the circular truncated cone parts to be detected are coaxially arranged on the centering sleeve and are pressed by the tip; the two angle calipers and the dial indicator are slidably connected to the machine base, the angle calipers are used for measuring the taper of the to-be-measured circular truncated cone part, and the dial indicator is used for measuring the roundness of the to-be-measured circular truncated cone part. The to-be-detected body is placed into the centering sleeve, automatic centering is achieved through the taper hole of the centering sleeve, manual positioning is not needed, the measuring mode is simple, cost is low, labor is little, detection efficiency is high, and the device is suitable for batch detection. The whole structure is mechanically connected, the structure is simple, and mounting, dismounting and transportation are convenient.

Description

Technical Field

[0001] This utility model relates to a measuring device for batch testing the taper and roundness of frustum parts. Background Technology

[0002] When measuring the taper and roundness errors of frustum parts in batches, the measurement efficiency is low without the aid of a specific measuring device, making it difficult to meet the needs of large-scale and high-efficiency testing. Therefore, this application provides a measuring device for batch testing the taper and roundness of frustum parts. Summary of the Invention

[0003] This invention provides a measuring device for batch testing the taper and roundness of frustum parts in order to solve the problems existing in the prior art.

[0004] The technical solutions adopted in this utility model are as follows:

[0005] A measuring device for batch testing the taper and roundness of frustum parts includes a base, angle calipers, a dial indicator, a centering sleeve, a center, and a motor. The motor is fixed on the base. The centering sleeve and the motor shaft are assembled with a separable structure. The center is located on the base and coaxial with the centering sleeve. The center can move axially. The frustum part to be tested is placed coaxially on the centering sleeve and pressed by the center. Two angle calipers and one dial indicator are slidably connected to the base. The angle calipers are used to measure the taper of the frustum part to be tested, and the dial indicator is used to measure the roundness of the frustum part to be tested.

[0006] Furthermore, the base is provided with two symmetrically arranged first columns, and a horizontally arranged electric telescopic rod is slidably connected to each first column. The vernier in the angle caliper is fixed to the telescopic shaft of the electric telescopic rod.

[0007] Furthermore, the base is provided with a second column, on which a horizontally arranged elastic mechanism is slidably connected. A dial indicator is slidably connected to the second column, with the axis of the dial indicator parallel to the elastic extension and contraction direction of the elastic mechanism, and the probe end of the dial indicator connected to the elastic free end of the elastic mechanism.

[0008] Furthermore, the elastic mechanism includes a guide post, a spring, and a looper. The guide post is slidably connected to the second column. The looper and the spring are both sleeved on the guide post. One end of the spring abuts against the second column, and the other end abuts against the looper. The probe end of the dial indicator is fixed to the looper.

[0009] Furthermore, the head of the loop is provided with a conical tip.

[0010] Furthermore, the upper end face of the centering sleeve is provided with a tapered hole, and the lower end face is provided with a circular hole with a keyway, and a connecting key is fixed on the motor shaft of the motor.

[0011] Furthermore, the tip is threadedly connected to the base, and a rotating wrench is provided on the tip.

[0012] This utility model has the following beneficial effects:

[0013] The object to be tested is placed into the centering sleeve, and it automatically centers through the tapered hole of the sleeve, eliminating the need for manual positioning. This method is simple, low-cost, requires minimal labor, and offers high testing efficiency, making it suitable for batch testing. The overall structure features mechanical connections, a simple design, and is easy to install, disassemble, and transport. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the present utility model.

[0015] Figure 2 This is a structural diagram of the present utility model.

[0016] Figure 3 This is a structural diagram of an elastic mechanism.

[0017] Figure 4 This is a structural diagram of the centering sleeve. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figure 1 and Figure 2 This utility model discloses a measuring device for batch testing the taper and roundness of frustum parts, comprising a base 1, an angle caliper 2, a dial indicator 3, a centering sleeve 4, a center 5, and a motor. The motor is fixed on the base 1, the centering sleeve 4 is assembled with the motor shaft in a separable structure, the center 5 is disposed on the base 1 and coaxial with the centering sleeve 4, and the center 5 can move axially. The frustum part to be tested is placed coaxially on the centering sleeve 4 and pressed by the center 5.

[0020] Two angle calipers 2 and one dial indicator 3 are slidably connected to the base 1. The angle calipers 2 are used to measure the taper of the frustum part to be measured, and the dial indicator 3 is used to measure the roundness of the frustum part to be measured.

[0021] To allow the angle caliper 2 and dial indicator 3 to slide on the base 1, two symmetrically arranged first columns 11 and one second column 13 are provided on the base 1.

[0022] Each of the first column 11 and the second column 13 is provided with a sliding groove and a slider. A horizontally arranged electric telescopic rod 12 is slidably connected to each of the first columns 11. The vernier in the angle caliper 2 is fixed to the telescopic shaft of the electric telescopic rod 12.

[0023] A horizontally arranged elastic mechanism 6 is slidably connected to the second column 13. A dial indicator 3 is slidably connected to the second column 13. The axis of the dial indicator 3 is parallel to the elastic extension and contraction direction of the elastic mechanism 6. The probe end of the dial indicator 3 is connected to the elastic free end of the elastic mechanism 6.

[0024] like Figure 3 The elastic mechanism 6 in this utility model includes a guide post 61, a spring 62 and a loop 63. The guide post 61 is slidably connected to the second column 13. The loop 63 and the spring 62 are both sleeved on the guide post 61. One end of the spring 62 abuts against the second column 13 and the other end abuts against the loop 63. The probe end of the dial indicator 3 is fixed to the loop 63 by a clamp.

[0025] like Figure 4 The axial positioning structure of the looper 63 on the guide post 61 is as follows: a T-head is provided at the outer end of the guide post 61, and a through stepped hole is provided in the axial direction of the looper 63. The looper 63 is positioned on the guide post 61 by the step surface of the stepped hole cooperating with the T-head.

[0026] A tapered head is threaded onto the head of the slipknot 62, with a tapered tip at the end.

[0027] The centering sleeve 4 in this invention has a tapered hole on its upper end face, which enables automatic centering of the frustum part (i.e., maintaining coaxiality with the centering sleeve 4). By replacing the centering sleeve 4 with tapered holes of different diameters, it is suitable for frustum parts with different diameter ranges.

[0028] The centering sleeve 4 and the motor shaft of the motor are assembled with a separable structure, which can realize the quick replacement of the centering sleeve 4. The separable structure is as follows: a round hole with a keyway is provided on the lower end face of the centering sleeve 4, and a connecting key is fixed on the motor shaft of the motor.

[0029] The motor drives the centering sleeve to rotate slowly at low speed, and no additional fixing structure is needed between the centering sleeve and the motor shaft.

[0030] The center point 5 is threaded onto the base 1. A rotating wrench 51 is provided on the center point 5. By turning the wrench, the center point 5 is rotated, thereby realizing the axial movement of the center point 5.

[0031] Select a centering sleeve with a suitable conical hole diameter, place the frustum part to be measured inside the conical hole of the centering sleeve, and then rotate the center tip 5 until it touches the frustum part. Turn on the switch of the electric telescopic rod 12 (the two electric telescopic rods 12 are controlled by one switch). The two electric telescopic rods 12 extend and make the angle dial in the angle caliper 2 contact the outer wall surface of the frustum part. After contact, move the electric telescopic rod 12 up and down to measure the taper of the frustum. The angle x can be read from the angle dial. The reading principle and method are the same as those of the vernier universal angle gauge. The taper of the frustum can be calculated using the inverse trigonometric function y=arctan(x).

[0032] After the frustum part is placed in the centering sleeve, the tip of the cone abuts against the outer wall of the frustum part. When detecting the roundness error of the cross-section, first ensure that the angle caliper 2 is farthest from the frustum part, then rotate the centering sleeve 4 to rotate the frustum part together. Measure the roundness of the frustum part using a dial indicator 3. Record the maximum and minimum readings on the dial indicator 3. Take half of the maximum difference between the diameters on a certain cross-section of the measured circle as the roundness error of that cross-section.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A measuring device for batch testing the taper and roundness of frustum-shaped parts, characterized in that: The device includes a base (1), angle calipers (2), dial indicator (3), centering sleeve (4), center (5), and motor. The motor is fixed on the base (1). The centering sleeve (4) and the motor shaft are assembled in a separable structure. The center (5) is located on the base (1) and coaxial with the centering sleeve (4). The center (5) can move axially. The frustum part to be measured is placed coaxially on the centering sleeve (4) and pressed by the center (5). Two angle calipers (2) and one dial indicator (3) are slidably connected to the base (1). The angle calipers (2) are used to measure the taper of the frustum part to be measured, and the dial indicator (3) is used to measure the roundness of the frustum part to be measured.

2. The measuring device for batch testing the taper and roundness of frustum parts as described in claim 1, characterized in that: The base (1) is provided with two symmetrically arranged first columns (11), and a horizontally arranged electric telescopic rod (12) is slidably connected to each first column (11). The vernier in the angle caliper (2) is fixed to the telescopic shaft of the electric telescopic rod (12).

3. The measuring device for batch testing the taper and roundness of frustum parts as described in claim 1, characterized in that: The base (1) is provided with a second column (13), and a horizontally arranged elastic mechanism (6) is slidably connected on the second column (13). A dial indicator (3) is slidably connected on the second column (13). The axis of the dial indicator (3) is parallel to the elastic extension direction of the elastic mechanism (6), and the probe end of the dial indicator (3) is connected to the elastic free end of the elastic mechanism (6).

4. The measuring device for batch testing the taper and roundness of frustum parts as described in claim 3, characterized in that: The elastic mechanism (6) includes a guide post (61), a spring (62) and a looper (63). The guide post (61) is slidably connected to the second column (13). The looper (63) and the spring (62) are both sleeved on the guide post (61). One end of the spring (62) abuts against the second column (13) and the other end abuts against the looper (63). The probe end of the dial indicator (3) is fixed to the looper (63).

5. The measuring device for batch testing the taper and roundness of frustum parts as described in claim 4, characterized in that: The head of the looper (63) is provided with a conical tip.

6. The measuring device for batch testing the taper and roundness of frustum parts as described in claim 1, characterized in that: The centering sleeve (4) has a tapered hole on its upper end face and a round hole with a keyway on its lower end face. A connecting key is fixed on the motor shaft of the motor.

7. The measuring device for batch testing the taper and roundness of frustum parts as described in claim 1, characterized in that: The tip (5) is threaded onto the base (1), and a rotating wrench (51) is provided on the tip (5).

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