A shaft part deep hole coaxial degree rapid testing fixture

Abstract

The utility model discloses a kind of shaft parts deep hole coaxiality quick gauge, including bottom plate, reference shaft, shift and load plate and dial gauge;Shaft seat is connected on bottom plate, reference shaft is rotatably connected on shaft seat;Shift and load plate is slidably fitted in bottom plate, driving device is driven and connected on shift and load plate;Clamp holder is connected on shift and load plate, dial gauge is connected on clamp holder, the measuring head of driving device driving dial gauge is close to or away from reference shaft;It further includes centering mechanism, centering mechanism is connected on the end of shift and load plate away from shaft seat;Centering mechanism includes centre, when first air cylinder extends to limit position, centre is concentric with reference shaft.Compared with prior art, the utility model simple structure, convenient to use, can accurately, quickly detect the coaxiality of shaft parts deep hole and outer cylindrical surface.

Description

Technical Field

[0001] This utility model relates to the field of inspection tool technology, and in particular to a rapid inspection tool for the coaxiality of deep holes in shaft-type parts. Background Technology

[0002] In machining, there is a need to measure the coaxiality of deep, long internal holes with the outer cylindrical surface of a part. For example, when drilling a deep hole in a shaft-type part, the theoretical axis of the deep hole should coincide with the theoretical axis of the shaft-type part. However, in actual machining, due to the influence of many factors, the actual axis of the deep hole often deviates from the theoretical axis.

[0003] Existing technologies present a three-coordinate measurement method and list other methods, but these methods are generally complex, require highly specialized equipment, and are subject to many limitations. Therefore, solving the above problems has become a technical challenge for those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to provide a quick inspection tool for the coaxiality of deep holes in shaft-type parts. It has a simple structure and is easy to use. It can accurately and quickly detect the coaxiality of deep holes and outer cylindrical surfaces of shaft-type parts, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A rapid inspection tool for the coaxiality of deep holes in shaft-type parts includes a base plate, a reference shaft, a transfer plate, and a dial indicator; a shaft seat is connected to the base plate, and the reference shaft is rotatably connected to the shaft seat; the transfer plate is slidably fitted to the base plate, and a drive device is driven and connected to the transfer plate; a clamp is connected to the transfer plate, and the dial indicator is connected to the clamp, and the drive device drives the probe of the dial indicator to approach or move away from the reference shaft.

[0006] A further improvement of this utility model is that the bearing seat is connected to one end of the upper surface of the base plate, the bearing seat is provided with a mounting hole, and the outer ring of the bearing is interference-fitted into the mounting hole.

[0007] A further improvement of this utility model is that a frustum for axial positioning is provided on the reference shaft, and one end of the reference shaft is interference-fitted with the inner ring of the bearing.

[0008] A further improvement of this utility model is that the two ends of the transfer plate are connected to the base plate through a linear slide rail assembly A, and the driving device is a first cylinder, with the power output end of the first cylinder connected to the middle of one side of the transfer plate.

[0009] A further improvement of this utility model is that the clamps are arranged in parallel, and the sleeves of the two dial indicators are horizontally connected to the two clamps by locking screws, with the probe axis of the dial indicator perpendicular to the reference axis.

[0010] A further improvement of this utility model is that adjustable feet are connected to the four corners of the lower surface of the base plate.

[0011] A further improvement of this utility model is that it also includes a centering mechanism, which is connected to the end of the transfer plate away from the shaft seat; the centering mechanism includes a center tip, which is concentric with the reference shaft when the first cylinder extends to its limit position.

[0012] A further improvement of this utility model is that the centering mechanism also includes a second cylinder, the power output end of the second cylinder is connected to a tailstock, the tailstock is connected to the base plate through a linear slide rail assembly B, the tip is connected to the tailstock, the second cylinder drives the tip to approach or move away from the reference axis, and one end of the reference axis is provided with a center hole that matches the tip.

[0013] The beneficial effects of this utility model are: This utility model provides a quick inspection tool for the coaxiality of deep holes in shaft-type parts. It has a simple structure and is easy to use, and can accurately and quickly detect the coaxiality between the deep hole and the outer cylindrical surface of shaft-type parts.

[0014] This utility model provides a rapid inspection tool for the coaxiality of deep holes in shaft-type parts. It has two dial indicators set on the left and right sides, allowing for simultaneous inspection at two points and ensuring more accurate test results.

[0015] This utility model provides a rapid inspection tool for the coaxiality of deep holes in shaft-type parts. It adds a centering mechanism, which serves to support the reference shaft and avoids the problem of inaccurate inspection results caused by the deflection of the reference shaft. Attached Figure Description

[0016] Figure 1 This is an overall isometric view of the present invention.

[0017] Figure 2 This is a top view of the entire utility model.

[0018] Figure 3 This is an isometric view of the present invention in its working state.

[0019] Figure 4 This is a partial cross-sectional view of the present invention in its working state.

[0020] Figure 5 This is a top view of the present invention in its working state.

[0021] In the diagram: 1-base plate, 101-adjusting foot, 2-reference shaft, 201-truncated cone, 3-transfer plate, 301-linear guide assembly A, 4-dial indicator, 5-shaft seat, 501-mounting hole, 502-bearing, 6-clamp, 7-first cylinder, 8-centering mechanism, 801-center, 802-second cylinder, 803-tailstock, 804-linear guide assembly B, 9-shaft parts, 901-deep hole. Detailed Implementation

[0022] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1: As Figures 1-2 As shown, a rapid inspection tool for the coaxiality of deep holes in shaft-type parts includes a base plate 1, a reference shaft 2, a transfer plate 3, and a dial indicator 4. A shaft seat 5 is connected to the base plate 1, and the reference shaft 2 is rotatably connected to the shaft seat 5. The transfer plate 3 is slidably fitted to the base plate 1, and a driving device is driven to connect to the transfer plate 3. A clamp 6 is connected to the transfer plate 3, and the dial indicator 4 is connected to the clamp 6. The driving device drives the probe of the dial indicator 4 to approach or move away from the reference shaft 2.

[0024] The bearing seat 5 is connected to one end of the upper surface of the base plate 1. The bearing seat 5 is provided with a mounting hole 501, and the outer ring of the bearing 502 is interference-fitted to the mounting hole 501.

[0025] The reference shaft 2 is provided with an axially positioned frustum 201, and one end of the reference shaft 2 is interference-fitted with the inner ring of the bearing 502.

[0026] The two ends of the transfer plate 3 are connected to the base plate 1 through the linear slide rail assembly A301. The driving device is the first cylinder 7, and the power output end of the first cylinder 7 is connected to the middle of one side of the transfer plate 3.

[0027] There are two clamps 6 arranged side by side. The sleeves of the two dial gauges 4 are horizontally connected to the two clamps 6 by locking screws. The probe axis of the dial gauge 4 is perpendicular to the reference axis 2.

[0028] Adjustable feet 101 are connected to the four corners of the lower surface of the base plate 1.

[0029] Example 2: This example is a further improvement on Example 1. The main improvement is that, in Example 1, due to the relatively long length of the reference shaft 2 and the weight of the shaft-like parts 9, the reference shaft 2 would bend due to deflection. In this example, the above-mentioned defects can be avoided. Specifically: The system also includes a centering mechanism 8, which is connected to the end of the transfer plate 3 away from the bearing seat 5. The centering mechanism 8 includes a center tip 801, which is concentric with the reference shaft 2 when the first cylinder 7 extends to its limit position. The centering mechanism 8 also includes a second cylinder 802, the power output end of which is connected to a tailstock 803. The tailstock 803 is connected to the base plate 1 via a linear slide rail assembly B805. The center tip 801 is connected to the tailstock 803. The second cylinder 802 drives the center tip 801 to approach or move away from the reference shaft 2, and one end of the reference shaft 2 is provided with a center hole that matches the center tip 801. In this embodiment, the centering mechanism 8 is added, which serves to support the reference shaft 2 and avoids the problem of inaccurate detection results caused by the deflection of the reference shaft 2.

[0030] Apart from the above, this embodiment is exactly the same as Embodiment 1, and will not be described again here.

[0031] The specific working principle of this utility model is as follows: like Figures 3-5 As shown, during zeroing, the operator places the standard part onto the outer wall of the reference shaft 2 on the X-axis coordinate, with the reference shaft 2 fitting against the deep hole 901 of the standard part, and one end of the standard part abutting against the end face of the frustum 201. The second cylinder 802 extends, and the tip 801 extends into the center hole at one end of the reference shaft 2. The first cylinder 7 extends along the Y-axis coordinate, and the probes of the two dial indicators 4 contact the outer circular surface of the standard part. The operator rotates the standard part along the B-axis to adjust the zero value inside the gauges, completing the zeroing of the two dial indicators 4. After zeroing, the first cylinder 7 and the second cylinder 802 retract, and the standard part is removed.

[0032] Next, the operator places the shaft part 9 onto the outer wall of the reference shaft 2, with the reference shaft 2 fitting against the deep hole 901 of the shaft part 9, and one end of the shaft part 9 abutting against the end face of the frustum 201. The second cylinder 802 extends, and the tip 801 extends into the center hole at one end of the reference shaft 2. The first cylinder 7 extends, and the probes of the two dial indicators 4 contact the outer circular surface of the shaft part 9. The operator rotates the shaft part 9 and observes the changes in the readings of the two dial indicators 4. If the readings of the two dial indicators 4 are within the allowable range of variation, the coaxiality of the deep hole 901 and the outer circular surface of the shaft part 9 is deemed acceptable. If the reading of one dial indicator 4 is outside the allowable range of variation, the coaxiality of the deep hole 901 and the outer circular surface of the shaft part 9 is deemed unacceptable.

[0033] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A quick inspection tool for the coaxiality of deep holes in shaft-type parts, characterized in that: It includes a base plate (1), a reference shaft (2), a transfer plate (3), and a dial indicator (4); a bearing seat (5) is connected to the base plate (1), and the reference shaft (2) is rotatably connected to the bearing seat (5); the transfer plate (3) is slidably fitted to the base plate (1), and a driving device is driven and connected to the transfer plate (3); a clamp (6) is connected to the transfer plate (3), and the dial indicator (4) is connected to the clamp (6), and the driving device drives the probe of the dial indicator (4) to approach or move away from the reference shaft (2).

2. The rapid inspection tool for the coaxiality of deep holes in shaft-type parts as described in claim 1, characterized in that: The bearing seat (5) is connected to one end of the upper surface of the base plate (1). The bearing seat (5) is provided with a mounting hole (501), and the outer ring of the bearing (502) is interference-fitted to the mounting hole (501).

3. The rapid inspection tool for the coaxiality of deep holes in shaft-type parts as described in claim 2, characterized in that: The reference shaft (2) is provided with an axially positioned frustum (201), and one end of the reference shaft (2) is interference-fitted with the inner ring of the bearing (502).

4. The rapid inspection tool for the coaxiality of deep holes in shaft-type parts as described in claim 1, characterized in that: The two ends of the transfer plate (3) are connected to the base plate (1) through the linear slide rail assembly A (301). The driving device is the first cylinder (7), and the power output end of the first cylinder (7) is connected to the middle of one side of the transfer plate (3).

5. A rapid inspection tool for the coaxiality of deep holes in shaft-type parts as described in claim 1 or 4, characterized in that: The clamps (6) are two arranged side by side. The sleeves of the two dial indicators (4) are horizontally connected to the two clamps (6) by locking screws. The probe axis of the dial indicator (4) is perpendicular to the reference axis (2).

6. A rapid inspection tool for the coaxiality of deep holes in shaft-type parts as described in claim 1, characterized in that: Adjustable feet (101) are connected to the four corners of the lower surface of the base plate (1).

7. A rapid inspection tool for the coaxiality of deep holes in shaft-type parts as described in claim 4, characterized in that: It also includes a centering mechanism (8), which is connected to the end of the transfer plate (3) away from the bearing seat (5); the centering mechanism (8) includes a tip (801), which is concentric with the reference shaft (2) when the first cylinder (7) extends to the limit position.

8. A rapid inspection tool for the coaxiality of deep holes in shaft-type parts as described in claim 7, characterized in that: The centering mechanism (8) also includes a second cylinder (802), the power output end of the second cylinder (802) is connected to a tailstock (803), the tailstock (803) is connected to the base plate (1) through a linear slide rail assembly B (804), the tip (801) is connected to the tailstock (803), the second cylinder (802) drives the tip (801) to approach or move away from the reference axis (2), and one end of the reference axis (2) is provided with a center hole that matches the tip (801).

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